耐气候影响/高粘度M25-45日本宝理POM共聚pom塑胶原料
聚甲醛是一种表面光滑、有光泽的硬而致密的材料,淡黄或白色,薄壁部分呈半透明。燃烧特性为容易燃烧,离火后继续燃烧,火焰上端呈黄色,下端呈蓝色,发生熔融滴落,有强烈的刺激性甲醛味、鱼腥臭。聚甲醛为白色粉末,一般不透明,着色性好, 比重1.41-1.43克/立方厘米,成型收缩率1.2-3.0%,成型温度170-200℃ ,干燥条件80-90℃ 2小时。POM的长期耐热性能不高,但短期可达到160℃,其中均聚POM短期耐热比共聚POM高10℃以上,但长期耐热共聚POM反而比均聚POM高10℃左右。可在-40℃~100℃温度范围内长期使用。POM极易分解,分解温度为240度。分解时有刺激性和腐蚀性气体发生,故模具钢材宜选用耐腐蚀性的材料制作。(1)POM是结晶型塑料,密度为1.42g/cm3,它的钢性很好,俗称“赛钢”.
(2)它具有耐疲劳、耐蠕变、耐磨、耐热、耐冲击等优良的性能,且摩擦系数小,自润滑性好.
(3)POM不易吸湿,吸水率为0.22~0.25%,在潮湿的环境中尺寸稳定性好,其收缩率为2.1%(较大),注塑时尺寸较难控制,热变形温度为172℃,聚甲醛有均聚甲醛两种,性能不同(均聚甲醛耐温性好一点).
力学性能
POM强度、刚度高,弹性好,减磨耐磨性好。其力学性能,比强度可达50.5MPa,比刚度可达2650MPa,与金属十分接近。POM的力学性能随温度变化小,共聚POM比均聚POM的变化稍大一点。POM的冲击强度较高,但常规冲击不及ABS和PC;POM对缺口敏感,有缺口可使冲击强度下降90%之多。POM的疲劳强度十分,10交变载荷作用后,疲劳强度可达35MPa,而PA和PC仅为28MPa。POM的蠕变性与PA相似,在20℃、21MPa、3000h时仅为2.3%,而且受温度的影响很小。POM的摩擦因数小,耐磨性好(POM>PA66>PA6>ABS>HPVC>PS>PC),极限PV值很大,自润滑性好。POM制品对磨时,高载荷作用时易产生类似尖叫的噪声。
电学性能
POM的电绝缘性较好,几乎不受温度和湿度的影响;介电常数和介电损耗在很宽的温度、湿度和频率范围内变化很小;耐电弧性,并可在高温下保持。POM的介电强度与厚度有关,厚度0.127mm时为82.7kV/mm,厚度为1.88mm时为23.6kV/mm。
日本宝理POM Duracon系列型号介绍
Duracon AW-01 Lubricated
Duracon AW-02 High Viscosity; Low Friction
Duracon AW-09 High Viscosity; Low Friction
Duracon CH-10 Electrically Conductive; Good Wear Resistance
Duracon CH-15 Electrically Conductive; Good Wear Resistance
Duracon CH-20 Electrically Conductive; Good Wear Resistance
Duracon CP15X Good Creep Resistance
Duracon EB-08 Antistatic; Electrically Conductive
Duracon EB-10 Antistatic; Electrically Conductive
Duracon ES-5 Antistatic; Electrically Conductive
Duracon EW-02 Antistatic; Electrically Conductive
Duracon GB-25 Low Warpage
Duracon GH-20 High Rigidity; High Strength
Duracon GH-25 High Rigidity; High Strength
Duracon GM-20 Low Warpage
Duracon HP25X High Rigidity; High Viscosity
Duracon HP90X High Rigidity
Duracon JW-03 Low Flow; Lubricated
Duracon KT-20 Good Wear Resistance; High Rigidity
Duracon LU-01 Good UV Resistance; Good Weather Resistance; Low Gloss
Duracon LU-02 Good UV Resistance; Good Weather Resistance; Low Gloss
Duracon M140 Fatigue Resistant; Good Duracon M140-44 High Flow
Duracon M140S High Flow
Duracon M25 Fatigue Resistant; Good Duracon M25-35 Good Weather Resistance
Duracon M90LP Laser Markable
Duracon M90LV Low VOC
Duracon M90S Acetal (POM) Copolymer
Duracon MS-02 Low Friction; Lubricated
Duracon NW-02 Lubricated
Duracon OL-10 Low Friction
Duracon OW-11 Low Friction
Duracon SF-10 Good Flexibility; High Impact Resistance
Duracon SF-15 Good Flexibility; High Impact Resistance
Duracon SF-20 Good Flexibility; High Impact Resistance
Duracon SW-01 Lubricated
Duracon SW-41 High Rigidity
Duracon SX-35 Good Flexibility; Noise Damping
Duracon VC-11 Antistatic; Fatigue Resistant; Good Chemical
Duracon WR-01 Moisture Resistant
Duracon YF-10 Good Wear Resistance; Lubricated
Duracon YF-20 Good Wear Resistance; Lubricated