@高密度聚乙烯板材的优点有哪些？
高分子聚乙烯板是高聚物的一种，有它的特殊性其机械力学性能受温度、相对分子质量的影响很大，在设计高分子聚乙烯板机械零件时应给予高度重视。
随相对分子质量的增大超高分子量聚乙烯的耐磨损性增强，伸长率随相对分子质量的增大而降低，屈服强随相对分子质最的增大也下降，最大强度随相对分子质量的增大而略有增高，冲击强度随相对分子质量的增大而增大，高分子聚乙烯板相对分子质量300万左右达到最大值，超过300万左右后，反而降低，冲击强度随温度的增高而变大，但在25℃左右时达到最大值。
UHMW-PE板用于发生滑动磨损或金属部件接触，导致摩擦或磨损的地方。它非常适用于斜槽和料斗衬里、输送机或部件、耐磨垫、机器导轨、冲击表面和导轨。
高耐磨性和抗冲击性
抗紫外线
易于加工以供工程使用
几乎完全不会受到化学侵蚀
低摩擦系数
不结块和粘附
良好的电气性能
在低温应用中表现出色 最高温度:180华氏度 吸水率< 0.01%
High molecular polyethylene sheet is a kind of high polymer, which has its particularity. Its mechanical properties are greatly affected by temperature and relative molecular weight. Great attention should be paid to the design of high molecular polyethylene sheet Machine element.
As the relative molecular weight increases, the wear resistance of ultra-high molecular weight polyethylene increases, and the elongation decreases with the increase of the relative molecular weight. The yield strength also decreases with the maximum increase of the relative molecular weight. The maximum strength slightly increases with the increase of the relative molecular weight, and the impact strength increases with the increase of the relative molecular weight. The relative molecular weight of the high molecular weight polyethylene board reaches the maximum value around 3 million, and after exceeding 3 million, it actually decreases, The impact strength increases with the increase of temperature, but reaches its maximum value at around 25 ℃.
