Abstract
With the increased usage of plastics in the automotive industry, the science of polymer
(paint) to polymer (plastic) adhesion has gained increased recognition. This paper attempts
to delineate the basics to attaining adhesion to plastics and to describe the current means
by which adhesion to low surface free energy plastics is attained. Adhesion to very low
surface free energy substrates, such as thermoplastic olefins (TPOs; blends of poly(propylene)
and rubber), is most often accomplished through the use of a surface pretreatment. The
surface pretreatment, for example plasma discharge, flaming, chemical etching, or solvent
degreasing, modifies the chemistry of the plastic surface mainly through oxidation and
surface roughening. The change in polarity of the surface then affords greater adhesion
of subsequent topcoats. Adhesion to low surface free energy plastics can also be attained
through the use of adhesion promoters. The adhesion promoter most commonly consists
of chlorinated poly(olefin) dissolved in a nonpolar solvent. When applied to the low surface
free energy plastic, the solvents can swell and diffuse into the surface. Mechanical interlocking
with rubber domains below the surface accounts for afforded adhesion. Modern techniques
available to the coatings chemist are described in relation to adhesion achieved. New
chemistries developed to replace chlorinated poly(olefins) are reviewed.作者: SLS20002003 时间: 2008-12-19 22:04
随着更多的塑料使用在汽车行业，关于聚合物（油漆）和聚合物（塑料）粘附的科学获得了更多的承认。本文试图划定基本实现粘附塑料和来形容目前的手段（其中粘附低表面自由能塑料的实现。附着力非常低）表面自由能基板，如热塑性烯烃（案例分析：共混聚丙烯通常是通过使用一种表面预处理，例如等离子体放电，燃烧，化学腐蚀，或溶剂脱脂，主要是通过氧化和使其表面粗糙来改性化学塑料表面。改变极性的表面会和面漆有更大的粘附。作者: fredfeng05 时间: 2009-1-22 13:23
not bad, but the chemistry words about promotor which don't include CPO for me is too difficult, I will try look up professinal dictionary.