高分子材料是以高分子化合物为基体，其它添加剂为配料所构成的材料。塑料、橡胶、纤维和薄膜都是常见的高分子材料。塑料主要是合成的高分子材料，通过混入添加剂使得材料的模量有较大改善，可用于工程结构。橡胶为柔性高分子聚合物，能够在外力作用下产生较大变形，当外力卸载后能迅速恢复。纤维有着与薄膜不同的性质，纤维存在模量较高但变形能力小的特点。正是由于这些高分子材料的不同特性，它们正日益取代传统材料，如金属、木材和混凝土。另外，它们具有良好的加工性能、超高的性价比和优异的力学性能，已经是我们生产生活中很重要的一类材料， 被广泛地运用于各个工程领域，如建筑行业、家具装饰等。
高分子材料运用在不同的场景，需要考虑不同的材料性能。当高分子材料用于结构材料时，屈服强度和断裂强度等力学性能指标需要被重点关注。而当高分子材料被加工成消费产品时，比如汽车、手机和液晶显示器等，表面外观便成为评判产品质量的关键方面之一。比如客户通常会According to表面外观判断汽车、手机、数字媒体播放器和其.它产品的质量。表面外观是刺激人类印象的主要感知属性,主要包括颜色、光泽和纹理B1。相对于颜色和纹理，光泽能潜移默化地影响人们的感观印象，比如黑色高光泽的钢琴表面给人以优雅的印象，而低光泽的汽车内部装饰给人以更舒适的质感。
Surface gloss reflects the reflective characteristics of the material surface in a certain direction, which is mainly determined by the physical characteristics of the illuminating light source and the material surface. The appropriate means to evaluate the difference in surface gloss is through human eye recognition, but due to the differences in the visual judgment ability of each person, there is no clear evaluation standard at the same time. Therefore, it is necessary to introduce gloss to evaluate the gloss of the material surface objectively and measurably. Gloss meter is currently the most widely used instrument for quantitatively measuring surface gloss. It can be used to measure the surface gloss of polymer materials, and can quantitatively evaluate the surface gloss index of each product and different batches of products.
The drop could be due to a less viscous surface and a lack of protection from the coating. A highly reflective car body surface, a glossy computer case , or satin black furniture surface can also be considered poor quality or defective when the surface gloss changes from the original surface. Scratched damage by hard objects is also an important reason for the change of the surface gloss of polymer materials. In addition to qualitative analysis of the gloss change trend of polymer materials after surface scratch damage, it is also necessary to explore the relationship between the mechanical properties, surface morphology, and optical properties of gloss change after surface damage. Therefore, the research on the surface gloss of polymer materials has important academic significance and commercial value.
