adhesion promoter
04-Feb-2004, 04:07 PM
#3
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Thread Starter
Join Date: Jul 2003
Location: Montreal
Posts: 4,508
yah im not sure, from what ive been reading thewy say to spray it on, then apply the paint... so im concluding its a solid that dries like a primer... not sure yet tho , not may sites on this type of thing
04-Feb-2004, 05:01 PM
#5
you don't use primer on ABS or urethane parts!
you ever seen a OEM painted bumper spidercrack? There is no primer underneath, cuz the thicker the layers of paint, the easier it is to get rock chips on 'em.
you ever seen a OEM painted bumper spidercrack? There is no primer underneath, cuz the thicker the layers of paint, the easier it is to get rock chips on 'em.
04-Feb-2004, 09:03 PM
#7
Adhesion Promoter
Requirements: Thermoplastic polyolefin, also known as TPO is widely used in flexible automotive exterior trim such as fascia, cladding and body side moldings. TPO is inherently difficult to wet due to its low surface energy and therefore difficult to paint. Methods such as plasma or flame have been very successful in overcoming this issue by oxidizing the TPO surface thereby raising the surface energy. Another well established and widely practiced method is through the use of air atomized adhesion promoters. These adhesion promoters are normally formulated with chlorinated polyolefin (CPO) as well as conductive resins. These conductive resins are particularly important because they provide a continuous conductive surface once the adhesion promoter film has coalesced. This enables subsequently applied paint layers to be applied electroscatically and therefore enhance transfer efficiency.
Adhesion promoters are available as 1K solventborne and waterborne systems. Primer or topcoat is then applied after the adhesion promoter has been flashed. Typically adhesion promoters are applied to achieve a dry film thickness of 0.3 – 0.5 mils (7.5 – 12.5mm)
DuPont Adhesion Promoter Products: DuPont Performance Coatings offers both solventborne and waterborne adhesion promoters. Both are highly conductive and offer excellent adhesion to TPO and subsequent applied coating layers. Color keyed and clear offerings are available without the conductive properties.
Requirements: Thermoplastic polyolefin, also known as TPO is widely used in flexible automotive exterior trim such as fascia, cladding and body side moldings. TPO is inherently difficult to wet due to its low surface energy and therefore difficult to paint. Methods such as plasma or flame have been very successful in overcoming this issue by oxidizing the TPO surface thereby raising the surface energy. Another well established and widely practiced method is through the use of air atomized adhesion promoters. These adhesion promoters are normally formulated with chlorinated polyolefin (CPO) as well as conductive resins. These conductive resins are particularly important because they provide a continuous conductive surface once the adhesion promoter film has coalesced. This enables subsequently applied paint layers to be applied electroscatically and therefore enhance transfer efficiency.
Adhesion promoters are available as 1K solventborne and waterborne systems. Primer or topcoat is then applied after the adhesion promoter has been flashed. Typically adhesion promoters are applied to achieve a dry film thickness of 0.3 – 0.5 mils (7.5 – 12.5mm)
DuPont Adhesion Promoter Products: DuPont Performance Coatings offers both solventborne and waterborne adhesion promoters. Both are highly conductive and offer excellent adhesion to TPO and subsequent applied coating layers. Color keyed and clear offerings are available without the conductive properties.
