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What Is Scratch Resistant Acrylic

  • Scratch resistant acrylic offers more than 40 times greater resistance to scratch and chemical than standard acrylic sheet as the scratch-resistant coating layers on one or two sides. Meantime, the scratch-resistant coating layers don’t affect the outstanding optical property. Someone calls “Scratch resistant plexiglass”, “Abrasion resistant acrylic”, “Scratch resistant plastic” or “anti scratch acrylic sheet“.

    Compared with engineering plastics, scratch-resistant acrylic such as polypropylene (PP), rubber modified PP, thermoplastic polyolefin (Tpos) and thermoplastic elastomer (TPEs) have the advantages of recyclability, lightweight and low cost, so they are more and more used in automobile and other fields.

    However, the scratch resistance of polyolefin materials is obviously poor, which is the key performance of automotive interior application components such as dashboard, console and door panel skin. Scratch resistant acrylic coating is one of the important properties of flat-panel monitors, automotive exterior application parts, ATVs (all-terrain vehicles), durable goods and furniture. Scratch resistant plexiglass with improved surface properties can replace metal and engineering resin materials, and can also be used to shape color. The scratch resistance of polyolefin can be improved by coating, inorganic mineral filler and other additives. In addition, scratch resistance depends on many other factors, such as resin type, filler content, additives, pigments, processing conditions and surface particle size.

    There are several obvious ways to damage the surface of plastic products, such as scratches on sharp objects, abrasion caused by abrasive friction, surface damage that changes surface properties or gloss, or "writing effect" caused by slight scratching of passivated objects. According to Dr. Ashu Sharma, a senior researcher at Ciba Fine Chemicals Co., Ltd., materials yield under the action of indentation force and sliding force or transverse (lateral) force, resulting in Ductile / brittle failure, resulting in scratches. In scratches, uneven surfaces produce uneven light scattering and "scratch hair". Solutions to improve scratch performance include minimizing the roughness of the polymer bottom surface and reducing the shoulder of the scratch to produce as little light scattering as possible and as little scratch visibility as possible. Accurate measurement of scratch resistant acrylic coating and understanding of the material science behind surface damage are important to form improvement programs.