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Celcon® WR25Z
乙缩醛（POM）共聚物
Ticona
产品说明
Celcon® WR25Z is a 2.5 nominal melt flow rate based acetal copolymer stabilized to provide maximum ultraviolet radiation resistance in outdoor applications. Celcon® WR25Z is a lower flow product providing improved toughness. Available in black only.
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 • 流动性低
• 抗紫外线性能良好 • 韧性良好
用途 • 室外应用
RoHS 合规性 • 联系制造商
外观 • 黑色
形式 • 颗粒料
加工方法 • 型材挤出成型 • 注射成型
物理性能 额定值单位制 测试方法
比重 1.41g/cm³ ASTM D792
ISO 1183
熔流率 2.5g/10 min ASTM D1238
溶化体积流率（MVR） (190°C/2.16 kg) 2.10cm³/10min ISO 1133
收缩率
流动 2.2% ASTM D955
横向流动 1.8% ASTM D955
横向流量 1.8% ISO 294-4
流量 1.6% ISO 294-4
机械性能 额定值单位制 测试方法
拉伸模量 2600MPa ISO 527-2/1A/1
抗张强度
屈服, 23°C 60.7MPa ASTM D638
屈服 61.0MPa ISO 527-2/1A/50
拉伸应变 (屈服) 10% ISO 527-2/1A/50
弯曲模量
23°C 2590MPa ASTM D790
23°C 2550MPa 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 (23°C) 6.4kJ/m² ISO 179/1eA
悬壁梁缺口冲击强度
23°C 75J/m ASTM D256
23°C 6.2kJ/m² ISO 180/1A
热性能 额定值单位制 测试方法
热变形温度
1.8 MPa, 未退火 110°C ASTM D648
1.8 MPa, 未退火 92.0°C ISO 75-2/A
维卡软化温度 161°C ISO 306/B50
熔融温度
-- 2 166°C ISO 11357-3
-- 165°C ASTM D3418
线形膨胀系数 ISO 11359-2
流动 0.00010cm/cm/°C
横向 0.00011cm/cm/°C
注射 额定值单位制
加工（熔体）温度 182 到 199°C
Celcon® WR25Z 2012年10月5日
乙缩醛（POM）共聚物
Ticona
注射 额定值单位制
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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