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Celcon® MC270
乙缩醛（POM）共聚物
Ticona
产品说明
Celcon® MC270 is a mineral coupled acetal copolymer designed for applications requiring improved stiffness, lower mold shrinkage and reduced warpage while maintaining the mechanical performance characteristics of an unfilled Celcon® M270 grade.
总体
材料状态 • 已商用：当前有效
供货地区 • 北美洲 • 拉丁美洲 • 南美洲
填料/增强材料 • 矿物填料
性能特点 • 刚性，良好 • 化学耦合 • 收缩性低
• 共聚物 • 抗弯曲
RoHS 合规性 • 联系制造商
形式 • 颗粒料
加工方法 • 注射成型
多点数据 • Isothermal Stress vs. Strain (ISO 11403-1)
物理性能
比重
收缩率
流动
横向流动
横向流量
流量
吸水率 饱和, 23°C
平衡, 23°C, 50% RH
机械性能
拉伸模量
抗张强度 屈服, 23°C
屈服
拉伸应变 (屈服)
弯曲模量
23°C
23°C
弯曲强度 (23°C)
冲击性能
简支梁缺口冲击强度
-30°C 23°C
悬壁梁缺口冲击强度
-40°C 23°C 82°C 23°C
热性能
热变形温度
1.8 MPa, 未退火
1.8 MPa, 未退火
额定值单位制 测试方法
1.48g/cm³ ASTM D792
ISO 1183
1.9% ASTM D955
1.6% ASTM D955
1.6% ISO 294-4
1.9% ISO 294-4
ISO 62
0.75%
0.20%
额定值单位制 测试方法
3150MPa ISO 527-2/1A/1
53.1MPa ASTM D638
57.0MPa ISO 527-2/1A/50
7.0% ISO 527-2/1A/50
2960MPa ASTM D790
3100MPa ISO 178
77.0MPa ISO 178
额定值单位制 测试方法
ISO 179/1eA
4.5kJ/m²
5.4kJ/m²
32J/m ASTM D256
53J/m ASTM D256
48J/m ASTM D256
5.5kJ/m² ISO 180/1A
额定值单位制 测试方法
93.3°C ASTM D648
101°C ISO 75-2/A
维卡软化温度 161°C ISO 306/B50
熔融温度 2 165°C ISO 11357-3
ASTM D3418
线形膨胀系数 ISO 11359-2
流动 0.00010cm/cm/°C
横向 0.00012cm/cm/°C
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Celcon® MC270 2012年10月14日
乙缩醛（POM）共聚物
Ticona
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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