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POM WR140LG,光泽低POM,良好的流动性POM, 抗紫外线性能良好POM
Hostaform® WR140LG
乙缩醛（POM）共聚物
Ticona
产品说明
Hostaform® acetal copolymer grade WR140LG Black is a specialty weatherable grade of acetal copolymer formulated to provide good flow with a low gloss finish and a UV stability necessary for exterior automotive applications.
总体
材料状态 • 已商用：当前有效
供货地区 • 北美洲 • 南美洲
• 拉丁美洲 • 亚太地区
添加剂 • 紫外线稳定剂
性能特点 • 共聚物 • 抗紫外线性能良好 • 耐气候影响性能良好
• 光泽低POM,良好的流动性POM, 抗紫外线性能良好POM • 良好的流动性
用途 • 汽车外部零件
RoHS 合规性 • 联系制造商
外观 • 黑色
加工方法 • 注射成型
物理性能 额定值单位制 测试方法
密度 1.33g/cm³ ISO 1183
溶化体积流率（MVR） (190°C/2.16 kg) 13.0cm³/10min ISO 1133
收缩率 ISO 294-4
横向流量 1.5%
流量 1.6%
机械性能 额定值单位制 测试方法
拉伸模量 1800MPa ISO 527-2/1A/1
拉伸应力 (屈服) 41.0MPa ISO 527-2/1A/50
拉伸应变 (屈服) 10% ISO 527-2/1A/50
弯曲模量 (23°C) 1850MPa ISO 178
冲击性能 额定值单位制 测试方法
简支梁缺口冲击强度 ISO 179/1eA
-30°C 3.6kJ/m²
23°C 3.6kJ/m²
热性能 额定值单位制 测试方法
热变形温度 (1.8 MPa, 未退火) 80.0°C ISO 75-2/A
熔融温度 2 165°C ISO 11357-3
线形膨胀系数 ISO 11359-2
流动 0.00013cm/cm/°C
横向 0.00013cm/cm/°C
注射 额定值单位制
加工（熔体）温度 182 到 199°C
模具温度 82.0 到 93.0°C
注射说明
Standard reciprocating screw injection molding machines with a high compression screw (minimum 3:1 and preferably 4:1) and low back pressure (0.35 Mpa/50 PSI) are favored. Using a low compression screw (I.E. general purpose 2:1 compression ratio) can result in unmelted particles and poor melt homogeneity. Using a high back pressure to make up for a low compression ratio may lead to excessive shear heating and deterioration of the material.
Melt Temperature: Preferred range 182-199 C (360-390 F). Melt temperature should never exceed 230 C (450 F).
Mold Surface Temperature: Preferred range 82-93 C (180-200 F) especially with wall thickness less than 1.5 mm (0.060 in.). May require mold temperature as high as 120 C (250 F) to reproduce mold surface or to assure minimal molded in stress. Wall thickness greater than 3mm (1/8 in.) may use a cooler (65 C/150 F) mold surface temperature and wall thickness over 6mm (1/4 in.) may use a cold mold surface down to 25 C (80 F). In general, mold surface temperatures lower than 82 C (180 F) may hinder weld line formation and produce a hazy surface or a surface with flow lines, pits and other included defects that can hinder part performance.
备注
1 一般属性：这些不能被视为规格。
2 10°C/min
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