相關標簽:俄羅斯Polyplastic POM、大塚 POM、深圳杜邦 POM塑料原料、阻燃 POM、脫模 POM、高剛性 POM塑料原料
聚甲醛塑料有毒嗎?無毒。聚甲醛是一種無毒,堅硬,致密的材料,表面光滑有光澤。它是具有高密度和結晶度的線性聚合物。根據其分子鏈中不同的化學結構,可以將其分為均甲醛和共甲醛兩種。聚甲醛具有高強度和剛度,良好的彈性以及良好的耐磨性。其機械性能優異,比強度可達到50.5MPa,比剛度可達到2650MPa,非常接近金屬。聚甲醛的機械性能隨溫度變化很小,共聚聚甲醛的變化略大于均聚物聚甲醛。聚甲醛的沖擊強度高,但常規沖擊不如ABS和PC。聚甲醛對缺口很敏感,缺口可將沖擊強度降低多達90%。
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其它 其它 注塑 | |
性能項目 | 試驗條件[狀態] | 測試方法 | 測試數據 | |
比重 | ASTM D792 | 1.58 | g/cm3 | |
收縮率 | 流動3.18mm | ASTM D955 | 0.3-0.5 | % |
含水量 | 0.15 | % | ||
拉伸模量 | ASTM D638 | 8270 | MPa | |
抗張強度 | ASTM D638 | 107 | MPa | |
伸長率 | ASTM D638 | 2.0-4.0 | % | |
彎曲模量 | ASTM D790 | 7580 | MPa | |
彎曲強度 | ASTM D790 | 165 | MPa | |
懸臂梁缺口沖擊強度 | 3.18mm | ASTM D256 | 80.1 | J/m |
懸臂梁無缺口沖擊強度 | 3.18mm | ASTM D4812 | 587 | J/m |
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