hdpe棒生产商-无锡精工尼龙棒厂高密度聚乙烯(HDPE)棒的性能
密度聚乙烯是种白色棒材,产品,无毒、无味,密度在0.940~0.976 g/cm3范围内;结晶度为80%~90%,软化点为125~135℃,使用温度可达100℃;硬度、拉伸强度和蠕变性X于低密度聚乙烯;耐磨性、电绝缘性、韧性及耐寒性均较好,在室温条件下,不溶于任何有机溶剂,耐酸、碱和各种盐类的腐蚀
高密度聚乙烯HDPE棒无臭,无毒,手感似蜡,具有X良的耐低温性能(X低使用温度可达-70~-100℃),化学稳定性好,能耐大多数酸碱的侵蚀(不耐具有氧化性质的酸),常温下不溶于一般溶剂,吸水性小,电绝缘性能X良;密度低;韧性好(同样适用于低温条件);拉伸性好;电气和介电绝缘性好;吸水率低;水汽渗透率低;化学稳定性好;抗张性;无毒无害。
高密度聚乙烯HDPE棒产品应用:
医用器具部件,密封件,切割板,滑动型材.广泛用于化工,机械、化工,电力,服装、包装、食品等行业
HDPE线性聚合物. 相对分子质量50~120
高密度聚乙烯HDPE棒具有突出的耐磨性、低摩擦因数和自润滑性;X良的耐应力开裂性、耐高温蠕变形和耐低温性(即使在-269℃也可适用);X良的拉伸强度,极高的冲击强度,且在低温下也不下降;噪声阻尼性好;同时,具有卓越的化学稳定性和耐疲劳性;无表面吸附力,电绝缘性能X异;无毒性等X良的综合性能.
(1)耐磨性 UHMWPE的耐磨性居塑料之冠,并X过某些金属,。
(2)耐冲击性 HDPE的冲击强度,在所有工程塑料中名列前茅,在相对分子质量为150万时达到X大值,它在液氮中(-196℃)也能保持X异的冲击强度,它在反复冲击后表面硬度更高。
(3)自润滑性 PE有极地的摩擦因数(0.05-0.11),故自润滑性X异。摩擦因数在水润滑条件下是PA66和POM的1/2,在无润滑条件下仅次于塑料中自润滑性X好的聚四氟乙烯(PTFE);当它以滑动或转动形式工作时,比钢和黄铜加润滑油后的润滑性还要好。
(4)耐化学药品性除强氧化性酸液外,在一定温度和浓度范围内能耐各种腐蚀性介质(酸 碱 盐)及有机介质(萘溶剂除外)。
(5)冲击能吸收性 冲击能吸收值在所有塑料中X高,因而噪声阻尼性很好,具有X良的消音效果。
(6)耐低温性具有X异的耐低温性能,在液氮温度(-269℃)下仍具有延展性,因而能够用作核工业的耐低温部件。
(7)卫生无毒性完全复合日本卫生协会的标准,并得到美国食品及药物行政管理局和美国农业部的认可,可用于接触食品和药物。
(8)不粘性 高密度聚乙烯HDPE棒表面吸附力非常微弱,其抗粘附能力仅次于塑料中不粘性X好的PTFE ,因而制品表面与其他材料不易粘附。
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