相關標簽:英國威爾斯 POM、美國TPC POM、普立萬 POM工程塑料、耐磨 POM、高抗沖 POM、拉絲 POM工程塑料
聚甲醛的種類有哪些?
塑料的聚甲醛樹脂,英文縮寫為POM,是一種具有高密度和高結晶度的線性聚合物。根據其分子鏈中不同的化學道結構,可分為均甲醛和共甲醛兩種。均聚甲醛具有高密度,結晶度和熔點,但熱穩定性差,加工溫度范圍窄(約10℃),對酸和堿的穩定性略低;而共聚甲醛的密度,結晶度,熔點和強度較低。但熱穩定性好,不易分解,加工溫度范圍寬(約50℃),對酸,堿的穩定性較好。具有全面的機械性能,均甲醛優于共甲醛。均聚POM的主要制造商是杜邦,其他制造商基本上生產共聚POM。
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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 | 1.48 | g/cm3 | |
收縮率 | 流動3.18mm | ASTM D955 | 1.5-2.0 | % |
吸水率 | ASTM D570 | 0.20 | % | |
拉伸模量 | ASTM D638 | 3100 | MPa | |
抗張強度 | ASTM D638 | 55.2 | MPa | |
伸長率 | ASTM D638 | 10 | % | |
彎曲模量 | ASTM D790 | 2620 | MPa | |
彎曲強度 | ASTM D790 | 82.7 | MPa | |
懸臂梁缺口沖擊強度 | 3.18mm | ASTM D256 | 53 | J/m |
懸臂梁無缺口沖擊強度 | 3.18mm | ASTM D4812 | 960 | J/m |
熱變形溫度 | 1.8MPa,未退火 | ASTM D648 | 160 | ℃ |
熱變形溫度 | 0.45MPa,未退火 | ASTM D648 | 113 | ℃ |
體積電阻率 | ASTM D257 | 1.0E+3 | ohms*cm | |
阻燃等級 | UL 94 | HB |
華屋(wu)(wu)木(mu)(mu)(mu)(mu)(mu)(mu)業(ye)(ye)有限公(gong)司 我(wo)公(gong)司是(shi)一(yi)(yi)家專業(ye)(ye)設(she)計(ji).生產(chan).建(jian)(jian)造(zao)(zao)(zao)木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu).實(shi)木(mu)(mu)(mu)(mu)(mu)(mu)制品(pin)且提供(gong)(gong)木(mu)(mu)(mu)(mu)(mu)(mu)加(jia)工(gong)的(de)(de)(de)(de)(de)企業(ye)(ye).始(shi)創于(yu)一(yi)(yi)九九二年(nian).公(gong)司至今已為(wei)國內多家旅游(you)景點(dian).娛樂休閑區(qu)提供(gong)(gong)木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu)景觀建(jian)(jian)造(zao)(zao)(zao)服務(wu).公(gong)司一(yi)(yi)貫注(zhu)重設(she)計(ji)上乘.做工(gong)精細.服務(wu)到(dao)位.誠信經(jing)營的(de)(de)(de)(de)(de)企業(ye)(ye)理(li)念.眾所(suo)周(zhou)知.幾千年(nian)前人(ren)(ren)類就(jiu)利用(yong)(yong)木(mu)(mu)(mu)(mu)(mu)(mu)材(cai)(cai)(cai)(cai)作(zuo)為(wei)勞動(dong)工(gong)具和(he)建(jian)(jian)筑材(cai)(cai)(cai)(cai)料(liao).隨著機(ji)械運輸方(fang)式(shi)的(de)(de)(de)(de)(de)不(bu)斷改進.木(mu)(mu)(mu)(mu)(mu)(mu)材(cai)(cai)(cai)(cai)得(de)到(dao)了越來越廣泛的(de)(de)(de)(de)(de)應用(yong)(yong).木(mu)(mu)(mu)(mu)(mu)(mu)材(cai)(cai)(cai)(cai)易于(yu)加(jia)工(gong).可(ke)以方(fang)便(bian)地搭建(jian)(jian)各(ge)(ge)種設(she)施(shi).即便(bian)在(zai)一(yi)(yi)些偏遠地區(qu).也能看到(dao)人(ren)(ren)們用(yong)(yong)純(chun)木(mu)(mu)(mu)(mu)(mu)(mu)結構建(jian)(jian)造(zao)(zao)(zao)的(de)(de)(de)(de)(de)房屋(wu)(wu).廊亭(ting)(ting)景觀.木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu).廊亭(ting)(ting)景觀作(zuo)為(wei)人(ren)(ren)們熟悉的(de)(de)(de)(de)(de)建(jian)(jian)筑廣泛分布在(zai)世界各(ge)(ge)地..當您步入一(yi)(yi)座木(mu)(mu)(mu)(mu)(mu)(mu)制結構的(de)(de)(de)(de)(de)木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu)時.就(jiu)會(hui)感受其(qi)具有創造(zao)(zao)(zao)性(xing)和(he)簡單實(shi)用(yong)(yong)的(de)(de)(de)(de)(de)建(jian)(jian)造(zao)(zao)(zao)技術.木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu)有利于(yu)人(ren)(ren)體健康.木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu)對人(ren)(ren)體有益(yi)是(shi)因為(wei)木(mu)(mu)(mu)(mu)(mu)(mu)材(cai)(cai)(cai)(cai)具有呼吸功(gong)能.它(ta)(ta)就(jiu)象天(tian)然(ran)(ran)的(de)(de)(de)(de)(de)空調機(ji)一(yi)(yi)樣可(ke)以調節屋(wu)(wu)內空氣濕度及溫度.木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu)材(cai)(cai)(cai)(cai)料(liao)以自然(ran)(ran)溫和(he)的(de)(de)(de)(de)(de)色彩.天(tian)然(ran)(ran)不(bu)同的(de)(de)(de)(de)(de)紋理(li).營造(zao)(zao)(zao)出符合(he)審美標準的(de)(de)(de)(de)(de)環境.使人(ren)(ren)感到(dao)精神愉快.木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu)是(shi)環保產(chan)品(pin).它(ta)(ta)的(de)(de)(de)(de)(de)存在(zai)不(bu)會(hui)對周(zhou)圍環境產(chan)生任何不(bu)良(liang)的(de)(de)(de)(de)(de)影響(xiang).而(er)居在(zai)其(qi)中(zhong)(zhong)的(de)(de)(de)(de)(de)您.則(ze)更能親身體會(hui)到(dao)大自然(ran)(ran)所(suo)賦予的(de)(de)(de)(de)(de)溫馨...我(wo)們公(gong)司所(suo)設(she)計(ji).生產(chan).建(jian)(jian)造(zao)(zao)(zao)安裝的(de)(de)(de)(de)(de)木(mu)(mu)(mu)(mu)(mu)(mu)制別墅及仿古建(jian)(jian)筑的(de)(de)(de)(de)(de)建(jian)(jian)造(zao)(zao)(zao)材(cai)(cai)(cai)(cai)料(liao).均選用(yong)(yong)優(you)質的(de)(de)(de)(de)(de)杉木(mu)(mu)(mu)(mu)(mu)(mu)與松(song)木(mu)(mu)(mu)(mu)(mu)(mu).在(zai)加(jia)工(gong)的(de)(de)(de)(de)(de)過程中(zhong)(zhong).均嚴格經(jing)過干燥.防蟲蟻.防腐(fu)(fu)等處理(li).在(zai)產(chan)品(pin)結構上.采用(yong)(yong)現代建(jian)(jian)造(zao)(zao)(zao)工(gong)藝.使木(mu)(mu)(mu)(mu)(mu)(mu)屋(wu)(wu)建(jian)(jian)造(zao)(zao)(zao)達到(dao)保溫.隔熱.隔音.絕緣.防水(shui)防火防腐(fu)(fu)等效果(guo).具有抗(kang)地震.抗(kang)臺風的(de)(de)(de)(de)(de)功(gong)能...本公(gong)司所(suo)提供(gong)(gong)的(de)(de)(de)(de)(de)可(ke)靠的(de)(de)(de)(de)(de)技術保障和(he)優(you)質的(de)(de)(de)(de)(de)服務(wu).讓您充分享受大自然(ran)(ran)所(suo)給予的(de)(de)(de)(de)(de)諸多恩惠.