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Henry Ford's
ghost sees red, and blue, and green.
(PRA
News of the Month - Jan 2002)
The late
Henry Ford, who famously declared that
you could have a vehicle in any colour
you wanted as long as it is black, has
received the final insult: the
development of a system that will allow a
car to be supplied in any colour you
choose in less than a week. PPG and Behr
Systems have jointly developed the
Dynamic FlexColours system and recently
demonstrated it at PPG's Flint, Michigan,
USA site. The problem of waste caused by
purging and cleaning the paint system
between colours has been avoided by
borrowing mixing-scheme technology:
pigments are added to the coating
materials right by the atomising system.
Both solid and basecoat / clearcoat
systems can be applied in a two coat
process using electrostatic bells. It is
claimed that the system offers enhanced
metallic effects. (Paintindia, Oct 2001,
pp 89, 90)
Sun shines
on coates of India
(PRA News of
the Month - Jan 2002)
Sun Chemicals, which earlier acquired the
bulk of the Coates inks operations
worldwide, is now acquiring a controlling
interest in Coates of India, a 51% owned
subsidiary. The deal involves the
purchase of the 51% holding from
TotalFina by Sun Chem of the Netherlands,
which already has an 8% stake in Coates
of India. The holding will then be sold
to DIC Singapore, another subsidiary of
Sun's parent company, DIC Japan.
(Paintindia, Oct 2001, p 81)
PCE
2002: successful in
Nuremberg
(European
Coatings Flash - January
21, 2002) |
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After
two successful events in
Amsterdam, Powder Coating
Europe has now come to
Nuremberg for the first
time and has even
exceeded its initial
successes. More than
3,100 visitors, so
according to the first
estimates of the
organisers at least as
many as two
years ago, will have
visited Europe's leading
powder exhibition and
accompanying Congress by
this afternoon. 40% of
the visitors have come
from abroad: "We are
particularly pleased to
see so many from Eastern
Europe," says
Project Manager Richard
Krowoza of the
NürnbergMesse. Of the
exhibitors, well over 50%
are from outside Germany
- especially Italy,
Switzerland and the
United Kingdom. In total,
the number of exhibitors
has risen from 127 to 139
between 2000 and 2002 .
The same applies to the
visitor numbers of the
specialist Congress,
which takes place in
parallel with the Show:
334 participants have
taken part in the
specialist forum (in 2000
there were 282).
"The ratio of end
users to coating
manufacturers is
pretty balanced, at 40%
to 60%," says Esther
Schwencke, head of Events
Division for coatings at
Vincentz Verlag in
Hanover. The next Powder
Coating Europe will take
place in Nuremberg again,
from 20 to 22 January
2004.
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Electrocoating
(Based
on Information provided
by Mr. Gurvin Sigh of
Coatec India) |
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Electrocoating
is a method of depositing
a film of organic coating
using electric current to
deposit the paint. The
process works on the
principal of
"Opposites
Attract". An
electrocoat system
applies electric charge
to the metal part
immersed in a bath of
oppositely charged paint
particles. The paint
particles are drawn to
the metal part where an
electrochemical reaction
takes place forming an
even, continuous film
over the complete
surface. At the desired
film thickness, the film
insulates the part and
electrocoating stops.
Cathodic coatings are
high performance coatings
with excellent corrosion
resistance. This process
is environment friendly,
can sustain 1000 hours of
salt spray in accordance
to test standard ASTM B
117, can coat intricate
and recessed areas, has
transfer efficiency
better than 95%, is a
water based technology,
has fewer defects,
predictable costs because
coating can be controlled
within 5 microns, better
finish since the film is
reproducible from part to
part and from day to day
and has reduced labor
costs. However it has
three shortcomings. Only
electrically conductive
substrates can be
processed, color change
is not possible and
initial capital cost is
substantial.
Electro coating
has some very distinct
advantages
It exhibits extremely
high corrosion protection
properties. A 20 micron
dry film thickness can
withstand as much as 1000
hours salt spray test in
accordance to test
conditions laid down in
ASTM B117 standard.
It is able to coat highly
recessed areas.
It is able to coat
complex shapes with a
very high degree of
accuracy and
repeatability.
Transfer efficiency of
more than 95% results in
reduced paint wastage.
It is a water-based
technology and thus
eliminates risk of fire
and drastically reduces
air and
water pollution.
Freshly deposited film is
insoluble in water,
permitting complete
rinsing and recovery of
dragged out material.
Uncured paint is dry
enough to allow careful
handling.
Unlike spray coatings,
electro deposited paint
does not sag during
curing.
Unlike dip coatings,
electro deposited paint
does not wash off in
enclosed areas due to hot
vapors.
The process is very
simple and completely
eliminates dependence on
skilled manpower.
The deposited film is
reproducible from part to
part and from day to day.
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Dry
Powder Density
(By
Drew Devlin on request of Manish
Bajpai, Kanpur)
The purpose of this method is to
assess the specific gravity of a
processed powder coating.
Apparatus
1. Metal Pyknometer (Weight per
gallon cup)
2. Balance (to four decimal
places)
3. Glass mixing rod
4. Constant temperature water
bath.
Materials
1. Petroleum Spirit (Of a known
Specific Gravity (0.642))
2. Powder coating to be tested
(In powder Form)
Health and Safety
When handling any powder it is
advisable to wear suitable
protective clothing and dust
mask. Use in a ventilated area.
When using solvents such as
Petroleum Spirit wear protective
clothing, gloves and safety
glasses. Always use in a
ventilated area.
Procedures
Calculating Volume of
Pyknometer
1. Allow pyknometer to reach room
temperature.
2. Fill the pyknometer with
distilled water and place into a
constant temperature water bath.
3. Set water bath at 23°C±2°C
and allow the pyknometer and
water to reach 23°C±2°C.
4. Remove from water bath, wipe
off excess water.
5. Weigh on an analytical balance
to 0.001g.
6. To calculate the volume of the
pyknometer use the following
equation:
V = m1 - m0 / r0
V = Volume of pyknometer
m1 = mass of pyknometer &
water
m0 = mass of pynometer
r0 = Density of distilled water @
23°C (0.9975)
7. Repeat steps 1-6 three times
for accuracy.
Calculating the
density of a dry Powder Coating.
1. Allow the Pyknometer to reach
room temperature.
2. Place the pyknometer and lid
on the balance and tare.
3. Weigh powder into pyknometer
until approximately half full.
4. Record weight of powder to
0.001g.
5. Fill the pyknometer with
petroleum spirit on top of dry
powder.
6. Stir to make sure no air is
trapped in mixture.
7. Top up petroleum spirit and
place lid on pyknometer.
8. Weigh total amount and record
weight to 0.001g.
9. Calculate the volume of
petroleum spirit using the
following equation:
V = m3 - m2 / r1
m3 = mass of powder and petroleum
spirit
m2 = mass of powder
r1 = density of petroleum spirit
10. Calculate the volume of
powder using the following
equation:
V3 = V1 - V2
V1 = Volume of Pyknometer
V2 = Volume of Solvent
V3 = Volume of powder
11. Calculate the density of the
powder using the following
equation:
r2 = m2 / V3
r2 = Density of powder
m2 = mass of powder
V3 = Volume of powder
12. Repeat step 1-11 three times
for accuracy.
Example
Volume of Pyknometer = 100.000
Density of petroleum spirit 0.642
Weight of powder = 80.000g
Weight of powder and petroleum
spirit = 105.000g
Volume of petroleum spirit =
105-80/0.642
= 38.941cm3
Volume of powder = 100 - 38.941
= 61.059 cm3
Density of powder = 80 / 61.059
= 1.310g/cm3
Note:-
The petroleum spirit will
evaporate quickly. Waste no time
performing the test.
PPG
Says Silver, White, Red Top
Charts as Most Popular Automotive
Colors in 2001
([Insider
News] January 7, 2002 Issue)
Silver, white and red were the
most popular North American
automotive colors for the 2001
model year, according to the 15th
annual color popularity survey
conducted by PPG Industries Inc.,
one of the top automotive
coatings producers worldwide.
"Over the last few years
silver has significantly
increased in popularity among
consumers, displacing green as
one of the most popular
colors," said William E.
Michael, PPG's director of Global
Color Technology - Automotive
Coatings. "White and red -
and blue in Europe - continued to
maintain their traditional
popularity in the color
palette," he said.
PPG said silver - defined as a
neutral color - led North
American vehicle color popularity
with 19% of the market, while
white and red decreased slightly
to 16% and 15%, respectively,
compared to the 2000 model year.
The natural color family -
consisting of champagne, gold and
lighter shades of brown and
orange - remained constant at
14%, followed by black and blue
at 11% each, green at 10% and
small niche and specialty colors
at 4%.
Although silver was the color of
choice with a more than 20%
market share in three segments -
mid-size, sport/compact cars and
sport utility vehicles/vans -
natural colors led the luxury
segment with 22% and red was the
top choice in 2001 for the truck
segment with 22%.
PPG's Advanced Color Design Team
- consisting of color experts
based in North America, Japan,
Europe, South America, India,
Australia, South Africa and
Malaysia - predicted that silver
has the greatest potential for
growth popularity. Refined and
brighter silver shades,
influenced by expanding
capabilities in technology and
updated industrial designs, will
dominate consumer choices in this
growing color area, the company
said.
Based on color trend research
conducted by the company, PPG
said it has developed 102 new
colors to show automakers for
2005. These new colors will
include shades such as light ice
blue, medium teal, burgundy reds,
wood-toned and orange browns, and
yellow shades of green. The
company is predicting that future
colors will be "more
sophisticated and chromatic"
due to effect pigments that will
add sparkle and provide cleaner
colors.
Vincentz
Verlag, Hannover, Germany,
announced program plans for the
European Coatings Conference,
"Polyurethanes
for High-Performance Coatings
II," scheduled for March
14-15 in Berlin. The conference
will offer 15 technical
presentations by experts in the
polyurethanes field, on the
topics of isocyanate and polyol
chemistry; innovative raw
materials; radiation-cure and
alternative mechanisms; and new
formulations. A detailed program
can be obtained by contacting
Amanda Beyer, Vincentz Verlag,
e-mail amanda.beyer@coatings.de.
ASTM
Says Name Change Reflects Global
Use of Standards
ASTM announced a name change to
ASTM International, a move the
organization said reflects the
increasingly global application
and use of ASTM standards. ASTM
officials said the organization's
membership numbers in excess of
30,000 technical experts from
more than 100 countries who make
up a worldwide standards forum.
"From its inception, the
ASTM method of developing
standards has been based on
consensus without borders,"
said ASTM International President
James Thomas. "Our process
ensures that interested
individuals and organizations
representing industry, academia,
consumers, and governments alike
all have an equal vote in
determining standards
content."
ASTM technical committees
represent a diverse range of
industries. Examples of the
organization's global reach
include a recent agreement
involving ASTM Committee D01 on
Paint and Related Coatings,
Materials and Applications with
the International Organization
for Standardization (ISO)
involving the use of globally
accepted standards in the paint
and coatings industry.
New
night visible paint
(Coatings
E-newsletter - January 25, 2002)
New
night visible paint introduces
BASF experimental Constellation
Colors automotive coatings make
cars easier to see at night.
Manufactured with aesthetic
appeal, these paints help
increase road safety, says Jon
Hall, manager of color
development for BASFs
Automotive OEM Coatings Regional
Business Unit. Aesthetically,
these new materials make the
normal, beautiful colours visible
on cars at night. From a safety
standpoint, this enables cars and
trucks to be more easily seen
when its dark.
The new coatings are created by
combining the pigments
refractive index with a special
reflective coating. When light
hits the coating, it appears to
light up.
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EXHIBITIONS
AND CONFERENCES IN FEBRUARY 2002
Hands-On
Powder Coating Workshop
(Feb 04 -
05, 2002 Nordson Corp. Amherst, OH)
The Hands-On Powder
Coating Workshop is an intensive
introductory seminar on powder coating
materials, their application,
troubleshooting and maintenance along
with hands-on training. Sponsored by:
PCI. Contact: PCI at 703-684-1770 or
800-988-2628. Fax: 703-684-1771 2121
Eisenhower Ave., Ste. 401 Alexandria, VA
22314 www.powdercoating.org
29th Annual
International Waterborne, High-Solids and
powder coatings symposium.
(6-8
February 2002, New Orleans, USA)
For further
information, please contact: Dr Robson F
Storey or Dr Shelby F Thames,
Co-organisers, WHD&PC Symposium, Dept
of Polymer Science, The University of
Southern Mississippi, Box 10063,
Hattiesburg, MS 39406-0063. Fax: + 1 601
266 6265; E-mail: waterborne@usm.edu
Coatings:
Changing scenatio in the new millennium
(9-10
February, 2002, Ahmedabad, India)
This Conference,
organised by the Paint and Coating
Technologists' Association, India, will
address topics including: pigments, paint
manufacturing machines, paint quality
control instruments, advancements in
pretreatment processes, paint application
techniques, waterborne coatings, powder
coatings, radiation curable coatings,
paint additives, marine coatings,
automotive coatings, speciality
polymers/coatings, printing inks, and
heavy-duty protective coatings. For
further information, please contact:
Conference Convener: Ashok Dighe, Paint
and Coating Technologists's Association,
Vallabh
Vidyanagar Centre, Institute of Science
and Technology for Advanced Studies and
Research, Vallabh Vidyanagar (Gujrat) 388
120, India. Tel: + 91-2692- 34955; Fax: +
91-2692- 38355; E-mail: secondpactcon@usa.net
Understanding
Salt Fog Testing
(Feb 12 -
12, 2002 National Exposure Testing
Sylvania, OH)
One day workshop at a test lab learning
the basics of salt fog testing, using
fully-functional test chambers, specimen
prep and evaluation. $495.00 includes
lunch, workbook and presentation on CD
rom. Sponsored by, National Exposure
Testing Contact, Cynthia Meade at
419-841-1065 Fax: 419-841-8716 3545
Silica Rd. Suite E Sylvania, OH 43440
Email: cmeade@core.com Internet: www.astmtesting.com
Fundamentals
of Cyclic Corrosion Testing
(Feb 13 -
13, 2002 National Exposure Testing
Sylvania, OH)
One day
workshop at a test lab learning about new
cyclic corrosion tests, using
fully-functional test chambers, specimen
prep and evaluation. $595.00 includes
lunch, workbook and presentation on CD
rom. Sponsored by, National Exposure
Testing, Contact: Cynthia Meade at
419-841-1065 Fax: 419-841-8716 3545
Silica Rd. Suite E
Sylvania, OH 43560 Email: cmeade@core.com Internet: www.astmtesting.com
Spray
Finishing Technology Workshop
(Feb 20 -
22, 2002 Toledo, OH USA)
The following topics will be included:
equipment types and selection; equipment
setup, operation and maintenance; surface
preparation and defect analysis; material
selection; and safety and regulatory
concerns. Sponsored by, Owens Community
College. Contact: Dr. Richard Kruppa at
603-778-2481 Email: sprayworkshop@netscape.net
Paint India
2002
(21-23
February 2002, Mumbai, India)
For further
information on this exhibition /
conference, please contact: ExpoCon
International, 126-A Dhuruwadi, A V
Nagvekar Marg, Prabhadevi, Mumbai, 400
025, India. Tel: + 91 22 430 6319; Fax: +
91 22430 0601; E-mail: colorpub@vsnl.vsnl.com
2002 ISCC
Conference on Industrial colour solutions
(24-26
February 2002, Philadelphia, USA)
Sponsored by the
Inter-Society Colour Council. For further
information, please contact John S Locke,
DuPont Experimental Station, Ink Jet, PO
Box 80402, Wilmington, DE 16880-0402.
Tel: + 1 302 695 1865 or: Ralph
Stanziola, Industrial Colour Technology,
410 Clover Ct, Neshanic Station, NJ
08853. Tel: + 1 908 369 8736
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