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Welcome to the
March 2011 edition of the IPC
e-newsletter. The IPC e newsletter is distributed free to more than
4000 people around the world.
Exhibitions and Conferences in March and April 2011
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January 2011 The basic raw material for powder coatings is
resins. The information about the chemistry, abailability fluctuation
and trends in the raw material used in the manufacturing of
resin is vital. On popular demands we have introduced a few pages on
our site which
be of some use to the powder manufacturers.
Have a look at these pages and let us know your reaction. These
pages contain the basic information. Please let us know what further
information you need Resin Titanium dioxide Neopentylglycol (NPG) Trimellitic
anhydride Isophthalic Acid (PIA) bisphenol A BPA carbon black
A few months earlier...
We have noticed that many of the pages on
Lets Finish it
were edited with the intention of vandalism and spamming. Although the
editing process also records the IP address, to prevent this vandalism
we have now restricted the editing right to registered users only.
Still, anyone can edit, but you just need to login before you edit.
Job coating units
New entries on job coating unit pages in
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Pipe Company Faces 25 OSHA
Citations, $88K Fine
The Occupational Safety and Health Administration has issued 25
citations and proposed $88,000 in fines against Welspun Tubular LLC for
alleged violations at its pipe manufacturing and coating facility in
Little Rock, AR.
Welspun Tubular is a subsidiary of Welspun Corp Ltd., based in Mumbai,
India. The manufacturer employs more than 20,000 workers globally,
including about 265 workers at the Little Rock facility. The facility
produces up to 300,000 tons of SAW pipe each year, primarily for Fortune
100 Oil & Gas companies.<more>
Nordson New Corporate
Headquarters Incorporates Leading Green Building Technologies.
Nordson Corporation recently opened a new 28,000 square-foot global
headquarters facility in Westlake, Ohio that incorporates leading green
building technologies and is expected to earn a prestigious Leadership
in Energy & Environmental Design (LEED) certification later in 2011.
LEED is an internationally recognized green building certification
system developed by the U.S. Green Building Council (USGBC) that
provides a framework for implementing green building design,
construction, operations and maintenance solutions. Nordson’s LEED
certification process is currently ongoing and is expected to take
approximately a year to complete. The new Nordson building is
anticipated to earn a LEED certification level of Silver or Certified
and is registered under the latest version of the certification rating
system, LEED v3. <more>
Castings Maker Fined $220K
for Repeated Silica Exposures The Occupational
Safety and Health Administration has cited Oberdorfer LLC for 28 alleged
violations of workplace health and safety standards, including failing
to correct hazards cited during a previous OSHA inspection.
The Syracuse, NY, manufacturer of aluminum castings faces a total of
$220,000 in proposed fines in connection with an OSHA inspection opened
July 30, 2010, to verify correction of previously cited hazards.<more>
Note: The infomercials are in alphabetical order. No other priorities
Infomercial from Vijay Enterprises Pvt. Ltd
Expansion for 4th Leading International Trade Fair for Industrial
Coating Technology from 17 through 20 April 2012 in Karlsruhe
PaintExpo Profits from Worldwide Investment Requirements
Oberboihingen – Growth is plainly foreseeable for the 4th
PaintExpo, which will take place in Karlsruhe from the 17th
through the 20th of April 2012: Roughly 15 months before the next
leading trade fair for industrial coating technology, the
exhibitor list already includes more than 180 companies from 13
countries. Organizer Jürgen Haußmann attributes the high level of
international interest in participation to, on the one hand,
extensive investment requirements for companies with painting
facilities. This is being triggered by ever stricter requirements
regarding efficiency, quality, flexibility and environmental
protection, as well as by new materials and material combinations.
On the other hand, PaintExpo is the number one information and
procurement platform for users, due to the fact that it presents
the world’s most comprehensive offerings ranging from
pre-treatment right on up to final inspection.
“PaintExpo has evolved into one of the principal trade fairs for
the coating industry. Consequently it’s an important platform for
presenting our innovations, and our product spectrum”, says Ulrich
Schmid; head of sales for general finishing at Eisenmann
Anlagenbau GmbH & Co. KG. As is also the case with this
manufacturer, nearly all industry and technology leaders from the
fields of equipment manufacturing, application technology and
paints have already decided in favour of participating at
PaintExpo 2012 in Karlsruhe. “Due to the fact that participation
at the trade fair was highly positive for us in 2010, we’ve
already registered for the upcoming event and we assume that it
will be very successful for us again”, explains Michael Pleuse,
German accounts manager at paint manufacturer Oxyplast Belgium,
regarding the company’s early decision. All other sectors, for
example pre-treatment, are already well represented in the
exhibitor list as well with companies like Forster Chemicals, Haug
Chemie, Plasmatreat and Walther Trowal. “Positive effects have
also resulted from the first PaintExpo Eurasia, which will take
place in Istanbul from the 6th through the 8th of October, 2011,
because a number of exhibitors from that region have also
registered for PaintExpo in Karlsruhe”, reports Jürgen Haußmann,
managing director of event organisers FairFair GmbH.
Market-Oriented, Representative, Forward-Looking Offerings PaintExpo’s recipe for success is its focus on the process
sequences for liquid painting, powder coating and coil coating.
The trade fair offers the world’s most extensive offerings in
these areas. And that’s what attracted roughly 6400 visitors from
62 countries to Karlsruhe in the economically critical spring of
2010 – 8% more than in 2008. “We’re expecting significant growth
in visitor numbers again in 2012”, says Jürgen Haußmann. This
seems very likely based on the investment requirements which have
become apparent amongst companies with in-house painting
facilities around the globe. Although users are faced with
different requirements in the various parts of the world, they’re
becoming stricter in general everywhere. Amongst other things, the
use of technical innovations that contribute to energy saving
operations and make efficient use of resources is absolutely
essential in order to be able to stand up to international
competition. After all, this is the only way to assure that
painting systems can be operated highly efficiently and
ecologically, and with low operating costs. “The combination of
painting systems with technological opportunities from the field
of renewable energy sources such as solar-thermal energy
conversion is also becoming more and more important. In this way,
energy intensive production processes like painting can be
integrated into energy concepts which are laid out for the entire
plant”, notes Ulrich Schmid. Michael Pleuse cites energy saving
opportunities resulting from coating materials as well: “We expect
further demand increases for low-temperature powdered enamels
which contribute to reduced operating costs and CO2 emissions.”
Internationally growing demand for coating materials, and at the
same time ever scarcer resources, will lead to further price
increases according to Pleuse. And thus the use of application and
recovery technologies which reduce material consumption will
continue to gain in significance. “All over the world, users of
industrial painting technology must adjust to actual requirements
to an ever greater extent, which necessitates the use of new
materials, for example lightweight structural components made of
fibrous composite materials and the use of various materials
within the finished product. This is why it’s so important to
offer systems technology for associated production steps such as
joining and bonding, and at the same time to maintain high
processing speeds in manufacturing”, elucidates Ulrich Schmid
Thanks to its complete and fully representative exhibition
offerings including systems and equipment for liquid painting,
powder coating and coil coating, application systems and spray
guns, liquid paints and powdered enamels, automation and conveyor
technology, cleaning and pre-treatment, drying and curing,
environmental technology, compressed air supply and exhaust
purification, water treatment, recycling and disposal,
accessories, measuring and test technology, quality assurance,
paint stripping, job-shop coating, services and technical
literature, PaintExpo presents future-oriented solutions in all
areas of industrial coating technology. Beyond this, downstream
process steps such as printing and packaging are covered as well.
Further information and a preliminary exhibitor list can be
accessed at www.paintexpo.com.
Infomercial from Vijay Enterprises Pvt. Ltd
SF EXPO China 2011 Will Kick Off on May 11, 2011
The 9th Guangzhou (China) International Surface Finishing,
Electroplating and Coating Exhibition (hereinafter referred as SF
EXPO China 2011) is jointly organized by China Surface Engineering
Association Electroplating Branch, Powder Coating Institute,
Guangdong Electroplating Association and Guangdong Coating
Industry Association, scheduled on May 11-13, 2011 at Guangzhou
International Convention and Exhibition Center. It’s estimated
that Over 300 companies will show and more than 18,000 attendees
will visit this premier industry event.
SF EXPO China, held biyearly, is one of the important surface
finishing industry events in China. Since the promotion started
from 2009, SF EXPO China 2011 has gained the support of about 40
associations and 50 media partners around the world. The latest
surface finishing materials, equipments and technologies,
including electroplating, painting equipments, blasting,
polishing, conversion coatings, anodizing, will be displayed in
this 3-day exhibition. The renowned enterprises such as Atotech,
Winstar, Coventya, Zi Yi, Wagner, ITW-Gema, Huan Yu, Da Qi have
confirmed their participation.
The exhibition will provide surface finishing companies with a
highly effective platform for press release, business networking
and negotiation and its scale will be twice of SF EXPO China 2009.
Besides, the organizing committee has achieved the in-depth
cooperation with many foreign associations so as to make the show
more internationalized. As for visitor organization, by now over
1,000 large user companies have decided to visit the show and
companies such as BYD, Foxconn, KONKA, Haier, Galanz, Toyota,
Nikon, OREX Lighting will send delegates.
The concurrent events are also to be held to enrich the
exhibition. The activities include: Members’ Assembly of Marketing
Working Committee of China Surface Engineering Association,
International Symposium on Surface Finishing Industry Development
and New Product, Technology Promotion Conference, Annual Meeting
of Guangdong and Guangzhou Electroplating Association, The 2nd
International Plating Technical Forum, Energy-saving and
Environment-friendly Coating Technical Seminar, Awarding Ceremony
for Outstanding Surface Finishing Enterprises and Coat Expo China
These industry activities are organized by authoritative
associations and draw the great attention of professionals and
experts, with an aim to make SF EXPO China a grand industry
gathering and achieve win-win opportunity for all participants.
Exhibition Organizers: China Surface Engineering Association
Powder Coating Institute
Guangdong Electroplating Association
Guangdong Coating Industry Association
Wise Exhibition (Guangdong) Co., Ltd.
Host: Wise Exhibition (Guangdong) Co., Ltd.
Exhibition Date: May 11-13, 2011
Tel: 86-20-37599008, 37599129
Infomercial from Vijay Enterprises Pvt. Ltd
Vijay Enterprises Pvt. Ltd.
is a leading manufacture of powder coating materials (PCM) in
India. VIJAY COAT today stands as a Reliable source of High
Quality and Durable Powder Coating materials at very reasonable
prices. Vijay's PCM find extensive application for industrial and
other demanding applications. Vijay enterprises was incorporated
in 1995 with a view to supplying quality PCMs to Indian industry.
Vijay's manufacturing set up is equipped with best machines from
M/s Buss AG Switzerland who are world's largest manufacturer of
Powder Coating Machines. Vijay has now established itself and
earned a name for its quality supplies and prompt delivery at very
economic prices. VIJAY has multi-locational production facilities
near Ahmedabad in western India and at Silvassa in the U T of
Dadra & Nagar Haveli, 200 Kms off Mumbai. This makes it a
competitive source of PCMs to all customers.
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AkzoNobel targets growth
after opening new coatings plant in India
AkzoNobel’s ambition to accelerate growth and increase revenue in India to
€1 billion within the next five years has been underlined today by the
official opening of a new Industrial Coatings plant near Bangalore.
The facility – which will produce coil and specialty plastic coatings – is
located in Hoskote on an existing AkzoNobel site which already
manufactures marine and protective coatings, automotive coatings and
“India will develop into one of the world’s economic powerhouses and it
ranks very highly on our list of priority high growth countries,” said
Leif Darner, the AkzoNobel Board member responsible for Performance
Coatings. “We are already well represented in India, but as the largest
global producer of coatings, we are committed to making a significant
contribution to the country’s continued development.”
Added Conrad Keijzer, Managing Director of AkzoNobel Industrial Coatings:
“Increasing our capacity in India is important because local demand is
growing. This is being driven by a number of factors, particularly the
rapid increase in average household incomes and the associated growth of
the housing, construction, consumer electronics and automotive sectors.”
The technologies most in demand include laser-etch coatings for the
automotive industry, soft-touch technology for smart phones and coil
coatings for high performance steel and aluminum construction markets.
The new Bangalore facility will be capable of manufacturing up to 18
million liters per year, with scope for further expansion. The additional
capacity will also boost the company’s ability to meet the growing demand
in India and neighboring countries.
AkzoNobel currently employs around 1,500 people in India and operates six
production facilities, two research laboratories and around a dozen sales
locations, representing activities from across all Coatings and Specialty
Bayer adds color
center in India
LEVERKUSEN, GERMANY (Feb. 1, 10:50 a.m. ET) -- Bayer MaterialScience AG
has inaugurated a color competence and design center in Greater Noida,
near New Delhi, India.
The center offers color matching and small-scale production of
Leverkusen-based BMS has similar centers in Newark, N.J.; Filago, Italy;
Uerdingen, Germany; Map Ta Phut, Thailand; and Shanghai and Guangzhou,
(China). The Color Competence and Design Centers are complemented with
three Innovation Centers in Leverkusen (Germany), Amagasaki (Japan), and
the Polymers Research and Development Center in Shanghai (China).<more>
Interview with H. M.
Bharuka, Managing Director, Kansai Nerolac Paints Your strategy
for growth? Any more acquisitions in the pipeline?
Our strategy would be to ride on the growth, create adequate noise & brand
salience, expand distribution at the right counters and offer the product
range that consumers will lap up. We are sure if we create a service
backup winning over customers, the growth will come.
Give your market share in industrial coating, powder coating, PT
We are the market leaders in Industrial coating business with an overall
market share of over 40%. Within industrial, in automotive coatings, our
market share is over 60%. In Powder Coatings our market share is over 27%
and in PT it is over 23%.
Construction activities are on an upswing. What is the break-up between
new construction and repainting?
Around 30% of the business gets contributed from the new construction &
balance 70% comes from re-painting.
What is your current installed capacity and utilization? Any plans to
expand capacity? Do you outsource any activity? Are your units available
to others for contract?
Annual Production capacity is 156300TPA (05-06). The capacity utilization
has been over 64%. We are investing around Rs1bn in increasing capacity in
in the existing units at Jainpur, Lote & Bawal. Some commodity and low
technology products are outsourced.
Our units are not available for contracted production for others!
What is the price trend in titanium oxide? With the duty reduction, are
the customers being passed on the benefit?
T1O2 prices are stable. The reduction in duty is off set with increase in
Price Rises DuPont Titanium
Technologies Announces a Price Increase for Ti-Pure® Titanium Dioxide
Products Sold in Japan Effective Feb. 1,
2011, DuPont Titanium Technologies announces a price increase of Yen 40
per kg for all DuPont™ Ti-Pure® titanium dioxide (TiO2) grades sold in
Momentive Specialty Chemicals Inc. to Raise Prices for Specialty Epoxy
Resins in the Americas
Momentive Specialty Chemicals announced that effective March 1, 2011, or
as contracts allow, the company will increase prices of the following
Specialty Epoxy Resins in the Americas. This increase is driven by the
continued cost increases of key raw materials.
Valspar says price
hikes not to offset higher costs Feb 14 (Reuters) -
Paint and coatings maker Valspar Corp said a price hike would not offset a
higher-than-expected rise in raw material costs in 2011, sending its
shares down as much as 3 percent.
Paint makers have been battling rising cost of raw materials such as
titanium dioxide and have been passing it on to customers.
Valspar forecast raw material prices to rise in the low double digits in
2011, higher than its prior forecast, and that price hikes would no longer
help it offset higher raw material costs, as it had said three months ago.
"There is going to be a lag between the increase in the raw material costs
and our ability to recover it in our marketplaces", Chief Executive
William Mansfield said on a conference call with analysts.
"The biggest challenge the coatings industry faces is raw material
announces price increase Acknowledging the
steep rise in the cost of raw materials through 2010 used in some
coatings, Jotun said that it had been forced to increase prices on some of
However, the company emphasised that price rises have not affected its
AkzoNobel Powder Coatings
Price Review EMEIA With immediate
effect, AkzoNobel Powder Coatings will increase prices for its Products in
Europe East, Middle East, India and Africa.
Prices for all major raw materials used in the production of powder
coatings have shown double digit increases throughout 2010. AkzoNobel has
absorbed the impact of these raw material price increases until now.
A recent further rise in the price of raw materials (due to the scarcity
of feedstocks in the required raw materials) has developed since the
beginning of 2011 and is predicted to continue throughout the year.
These unprecedented rises have necessitated an immediate adjustment of
selling prices by the very latest 1st March 2011. Consequently, for all
supplies, selling prices across all Powder Coatings product ranges will be
increased throughout the EMEIA region by between 10% and 20% depending on
product type. This will partially neutralize the raw material price
Prices Face Global Spike Fasten your
seatbelts. The price of protective and marine coatings is about to spike
again globally—perhaps to record highs—and no relief is in sight,
PPG Industries, Jotun, International Paint (also known as International
Protective and International Marine) and Hempel have all recently
announced global price increases in their protective and marine coatings
Epichlorohydrin in China using Glycerine as feedstock by 2013.... <more>
Corrosion Cost Tool, Updates Standard Coatings Terms ASTM has developed
its first standard for evaluating the lifecycle cost of corrosion
protection systems and has revised its standard for coatings terms.
“ASTM A1068 - 10 Standard Practice for Life-Cycle Cost Analysis of
Corrosion Protection Systems on Iron and Steel Products” covers a
procedure for using life-cycle cost (LCC) analysis techniques to evaluate
different corrosion protection system designs that satisfy the same
LCC analysis is a method for evaluating alternatives that involve
different cash flows over the life of the designated project design.
The method involves calculating the LCC of each alternative capable of
satisfying the project’s functional requirement and comparing them to
determine the lowest estimated LCC.<more>
PPG Powder Primer
Approved for Military Application PPG Powder Primer
Approved for Military Application-Image via Wikipedia
Serving customers in industrial, transportation, consumer, and
construction markets and aftermarkets, PPG Industries’ continues its
vision to be the world’s leading coatings and specialty products company
with MLP80000 primer.
The PPG commercial MLP 80000 powder primer is approved for MIL-DTL32348
specification, which is Type, I military specification for chemical
agent-resistant powder primers. Issued in November 2010, the new
MIL-DTL-32348 specification for chemical-agent-resistant coating (CARC)
powder primer and topcoat has the intent of increasing the use of powder
coatings on military vehicles and components by the military.<more>
BASF Hikes R&D,
Sells Coatings Unit BASF SE spent a
record $2 billion on research and development in 2010 and will top that
this year, putting the chemical giant on track to generate more than $10
billion from innovation efforts by 2015, the company says.
BASF also will be selling off its Surface Technologies business to New
Jersey-based Curtiss-Wright Corp. The ST business is a leading supplier of
metallic and ceramic thermal spray coatings, primarily for the aerospace
and power generation market <more>
Capacity Expansion at Singapore Polyetheramines Plant
The Performance Products division of Huntsman Corporation announced that
it is going ahead with the engineering design for a 40,000-ton capacity
expansion program at its world-scale polyetheramine facility in Singapore.
Huntsman plans to invest more than $70 million at its Jurong Island plant
in a move that will more than double the site’s manufacturing
capabilities, help satisfy increasing global demand for polyetheramines
and strengthen the company’s leadership position in this technology. In
the last five years, Huntsman – the world’s leading polyetheramine
producer – has seen interest in its JEFFAMINE amines accelerate
Polyetheramines are typically employed in epoxy coatings or in additives
that enhance the performance of fuels, concrete and pesticides.
Trial of Drag Reducing Nanotechnology
easyJet, the UK’s largest airline, has announced that it is the first
commercial airline to trial a revolutionary nanotechnology coating on its
aircraft aimed at reducing drag and increasing fuel efficiency.
The high tech coating, already used on US military aircraft, is a polymer
that cross links and bonds to the paint surface. The coating reduces the
build up of debris on the aircraft’s structure, leading edge and other
surfaces, thus reducing drag on the surface of the aircraft.
The manufacturers of the coating estimate that it could reduce easyJet’s
fuel consumption by 1-2%. The airline has coated eight aircraft, adding an
estimated weight of only 4oz per aircraft, and will compare their fuel
consumption with the rest of the fleet during a 12 month trial period. It
is estimated that the implementation across the fleet could be equivalent
of saving the Co2 burned in 20 flights daily.
Since its launch in 1995, easyJet has always strived to improve its
efficiency to keep its costs down. Passengers benefit through low fares
and a reduced carbon footprint. As a result, an easyJet passenger is
responsible for 22% fewer emissions than a passenger on a traditional
airline, when they fly the same route and use the same type of plane.<more>
mimics nature for antibacterial ‘skins’ Taking a lead from
animals such as dolphins and pilot whales that are known to have
anti-fouling skins, researchers from the Industrial Consortium on
Nanoimprint (ICON) at Singapore’s Agency for Science, Technology and
Research (A*STAR) are using nanotechnology to create synthetic,
chemical-free, antibacterial surfaces.
The surfaces can reduce infections caused by pathogens such as
Staphylococcus aureusand Escherichia coli, and may be deployed on common
plastics such as those used for medical devices and lenses. Conventional
methods for preventing bacterial surface attachment, say the scientists,
often use potentially harmful metal ions, nanoparticles, chemicals or
Nanoimprint technology, a form of nanotechnology, is a straightforward
technique that has been developed by A*STAR's Institute of Materials
Research and Engineering (IMRE) to make complex nanometer-sized patterns
on surfaces to mimic the texture of natural surfaces. This gives the
engineered material 'natural' properties such as luminescence,
adhesiveness, waterproofing and antireflectivity.
Dr Low Hong Yee, IMRE's director for research and innovation said: "With
millions of years of experience behind her, nature has produced some of
the most rugged and adaptable life forms. The antimicrobial surfaces
project will demonstrate the versatility of nanoimprinting technology and
its benefits to a wide range of industries.”<more>
Berger Paints India
net rises 32.96% for Dec`10 qtr Berger Paints India
disclosed a substantial rise in standalone net profit for the quarter
ended December 2010. During the quarter, the profit of the company rose
32.96% to Rs 369.10 million from Rs 277.60 million in the same quarter
Asian Paints: Punar
janam lacks life
They have forgotten to
pack in the one most important ingredient... and that’s humour. And have
instead added on the ‘obsession’ factor, but it falls a little flat
So then how do you depict the durability, the long-lasting effect of a
hardware brand? Many routes have been tried by marketers. My most
favourite one is the ad done by Greenply plywood some years ago. And that
featured a re-incarnation sequence. A young Sikh boy accidentally
discovers he was a Tamilian man in his past birth. And the memory is
triggered by his wooden table he finds in his past house, which remains as
solid as ever. And the exchange in Tamil between the little Sardarji boy
and his past life wife Savithri was hilarious to say the least. <more>
Chemicals Inc. To
Raise Prices For Allyl Chloride, Epichorohydrin and BPA in North America <more>
AKZO NOBEL NV
: Nobel hires top executive for Decorative Paints business in China
AkzoNobel's strategic medium-term growth ambitions to double revenue in
China, from $1.5 billion to $3 billion, will be further fuelled by the
appointment of Lin Liangqi as the new Managing Director, Decorative Paints
for China & North Asia <more>
Berger Paints - Publish Audited Results
Berger Paints India Ltd has informed BSE that in respect of the last
quarter of the financial year 2010-11, the Company intends to publish the
Audited financial results for the entire financial year 2010-11, within 60
days of the end of the said financial year.
1 hurt in industrial flash fire
GREENSBORO — A Sherwin-Williams worker was burned in an accidental flash
fire at the company's local plant this morning.The employee, who was not
identified, suffered minor burns to his arms and face and is being treated
at Moses Cone Hospital.read <more>
Hampton water tower
painter survives 110-foot fall KAUFMAN, Texas
A 21-year-old Hampton man has been hospitalized in fair condition after
falling 110 feet from an East Texas water tower.
A Kaufman County Sheriff's Department spokeswoman says Brandon Milley of
Hampton fell Sunday morning while painting the North Kaufman Water Supply
Meghmani Organics Ltd has informed BSE about Fire broke out in New Beta
Blue Plant at Pigment Manufacturing division at Panoli - Ankleshwar.
Source : BSE<more>
Ask Joe Powder
"Ask Joe Powder"
"Ask Joe Powder" is a question and answer column authored by Kevin Biller
of the Powder Coating Research Group. Mr. Biller has over 30 years
experience formulating and manufacturing powder coatings. He welcomes your
questions regarding powder coating technology. Please write to:
We are in need of an electrostatic dissipative (ESD) coating for work
furniture to be used in the assembly of electronically sensitive
equipment. We have tried carbon black containing liquid paint (alkyds) but
wonder if we can get his performance in a powder coating. Also can we get
it in colors other than black?
This is a good question. ESD coatings have been typically formulated using
very fine carbon pigment (conductive grade carbon black). The use of this
or any conductive agent requires particle to particle interaction in order
to achieve any level of electrical continuity. Fine particle size carbon
black by its nature has a very high oil absorption which poses rheological
problems in most coatings. Liquid coatings can compensate for this by
lower solids or lower viscosity resins. With powder coatings it is a
nearly impossible to incorporate enough conductive carbon black to achieve
ESD. Levels high enough to reach this level of conductivity have no flow
Alternately you may consider using an antimony doped tin oxide as the
conductive agent. This material is light gray and possesses a reasonable
oil absorption. Furthermore suppliers offer this material neat or as a
coating on mica or titanium dioxide. The mica product can be used at a
much lower concentration due to its platy morphology. The titanium dioxide
product offers superior opacity.
You may also wish to consider the emerging field of nano-fibers and nano-tubes.
These materials are noted for their conductive performance, however
dispersion of them may be difficult to achieve in a powder coating
extruder. It’s an interesting technology that bears investigation.
You may also consider inherently conductive polymers such as polyaniline,
however they are very
expensive and may be cost prohibitive for your application.
We are a powder coating shop in the upper Midwest United States and have
been experiencing a hazy appearance on our black semi-gloss powder coating
finish after the parts exit our oven. We use an electric batch oven. Could
our powder supplier be putting too much wax in the coating?
Please check for the correct exhaust in your oven. Operators of electric
ovens often completely close off the exhaust because they are not worried
about by-products of gas combustion. Most powder coatings emit a low level
of volatiles upon baking (stoving) even in electric ovens. These volatiles
(mainly water and low molecular weight additives) create smoke and can
condense on the surface of parts in the oven casuing a haze. Opening up
your exhaust vent will surely allow the low level of volatiles to escape
thereby keeping you parts haze-free.
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