相關標簽：美國PTS POM、普利朗 POM、美國福祿 POM塑膠原料、阻燃 POM、脫模 POM、高滑動 POM塑膠原料
聚甲醛（POM）是什么_聚甲醛的由來是什么？
聚甲醛(或聚縮醛)polyformaldehyde學名為聚氧亞甲基﹐是一種熱塑性結晶聚合物。英文縮寫為POM。結構式為[-CH2-O-]n﹐1942年以前﹐甲醛聚合得到的多半是聚合度不高﹑容易受熱解聚的聚氧亞甲基二醇HO(-CH2-O)nH﹐其中n＝8～100的為多聚甲醛﹔超過100的為-聚甲醛﹐1955年前后﹐美國杜邦公司由甲醛聚合得到甲醛均聚物﹐即均聚甲醛﹐商品名為Delrin。美國塞拉尼斯公司由三聚甲醛出發﹐制得與少量二氧五環或環氧乙烷的共聚物﹐即共聚甲醛﹐商品名為Celcon。 。以上文獻若需轉載請備注出處：pbt塑料 //shanglikaiguan.cn/
| 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 | 1.40 | g/cm3 | |
| 收縮率 | 流動3.18mm | ASTM D955 | 2.2 | % |
| 含水量 | 0.15 | % | ||
| 拉伸模量 | ASTM D638 | 2760 | MPa | |
| 抗張強度 | ASTM D638 | 53.8 | MPa | |
| 伸長率 | ASTM D638 | 10 | % | |
| 彎曲模量 | ASTM D790 | 2620 | MPa | |
| 彎曲強度 | ASTM D790 | 72.4 | MPa | |
| 懸臂梁缺口沖擊強度 | 3.18mm | ASTM D256 | 85.4 | J/m |
| 懸臂梁無缺口沖擊強度 | 3.18mm | ASTM D4812 | 53400 | J/m |
| 熱變形溫度 | 1.8MPa,未退火 | ASTM D648 | 110 | ℃ |
| 阻燃等級 | UL 94 | HB | ||
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