@高密度聚乙烯板材的優(yōu)點有哪些？
? 高分子聚乙烯板是高聚物的一種，有它的特殊性其機械力學(xué)性能受溫度、相對分子質(zhì)量的影響很大，在設(shè)計高分子聚乙烯板機械零件時應(yīng)給予高度重視。
? 隨相對分子質(zhì)量的增大超高分子量聚乙烯的耐磨損性增強，伸長率隨相對分子質(zhì)量的增大而降低，屈服強隨相對分子質(zhì)最的增大也下降，最大強度隨相對分子質(zhì)量的增大而略有增高，沖擊強度隨相對分子質(zhì)量的增大而增大，高分子聚乙烯板相對分子質(zhì)量300萬左右達(dá)到最大值，超過300萬左右后，反而降低，沖擊強度隨溫度的增高而變大，但在25℃左右時達(dá)到最大值。
? UHMW-PE板用于發(fā)生滑動磨損或金屬部件接觸，導(dǎo)致摩擦或磨損的地方。它非常適用于斜槽和料斗襯里、輸送機或部件、耐磨墊、機器導(dǎo)軌、沖擊表面和導(dǎo)軌。
高耐磨性和抗沖擊性
抗紫外線
易于加工以供工程使用
幾乎完全不會受到化學(xué)侵蝕
低摩擦系數(shù)
不結(jié)塊和粘附
良好的電氣性能
在低溫應(yīng)用中表現(xiàn)出色 最高溫度:180華氏度 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 ℃.
