PET (Polyethylene Terephthalate) composition as well as preparation method and application thereof

The invention discloses a PET (Polyethylene Terephthalate) composition which comprises the following components in parts by weight: PET resin/glass fiber/barium sulfate/titanium dioxide/metal salt ionomer/talcum powder, the weight content of titanium dioxide in the titanium dioxide is greater than or equal to 90%. The glass fiber/barium sulfate with specific content and specific proportion and the metal salt ionomer/talcum powder with specific proportion are adopted as a nucleating system, so that the advantages of few floating fibers, reduction of warping after high-temperature baking and less discoloration can be realized at the same time. 本发明公开了一种PET组合物，按重量份计，包括以下组分：PET树脂/玻璃纤维/硫酸钡/钛白粉/金属盐离聚物/滑石粉；所述的钛白粉中二氧化钛重量含量≥90%。本发明通过特定含量、特定配比的玻璃纤维/硫酸钡以及特定比例的金属盐离聚物/滑石粉的成核体系，能够同时实现浮纤少、高温烘烤后翘曲的降低、变色少的优点。