Celcon® M140
乙缩醛（POM）共聚物
Ticona

产品说明

Celcon® acetal copolymer grade M140 is a moderately high flow general purpose injection molding grade. It is designed for use in applications requiring some enhanced flow characteristics over the standard Celcon® M90 material.

Chemical abbreviation according to ISO 1043-1: POM

Please also see Hostaform® C 13021.     
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 
性能特点 • 共聚物 • 流动性高  • 一般目的 
用途 • 一般目的    
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)   
树脂ID (ISO 1043) • POM    
     
物理性能  额定值单位制  测试方法 
比重  1.41g/cm³  ASTM D792 
    ISO 1183 
     
溶化体积流率（MVR） (190°C/2.16 kg)  12.0cm³/10min ISO 1133 
收缩率     
流动  2.2%  ASTM D955 
横向流动  1.8%  ASTM D955 
横向流量  1.7%  ISO 294-4 
流量  1.8%  ISO 294-4 
吸水率    ISO 62 
饱和, 23°C  0.75%   
平衡, 23°C, 50% RH  0.20%   
机械性能  额定值单位制  测试方法 
拉伸模量  2740MPa  ISO 527-2/1A/1 
抗张强度     
屈服, -40°C  94.5MPa  ASTM D638 
屈服, 23°C  60.7MPa  ASTM D638 
屈服, 71°C  34.5MPa  ASTM D638 
屈服  65.0MPa  ISO 527-2/1A/50 
拉伸应变 (屈服)  9.0%  ISO 527-2/1A/50 
拉伸蠕变模量    ISO 899-1 
1 hr  2350MPa   
1000 hr  1300MPa   
弯曲模量     
23°C  2590MPa  ASTM D790 
71°C  1240MPa  ASTM D790 
104°C  689MPa  ASTM D790 
23°C  2640MPa  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)  6.0kJ/m²  ISO 179/1eA 
悬壁梁缺口冲击强度     
-40°C  48J/m  ASTM D256 
23°C  59J/m  ASTM D256 
23°C  5.7kJ/m²  ISO 180/1A 
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Celcon® M140  2012年10月14日
乙缩醛（POM）共聚物  
Ticona  
热性能 额定值单位制 测试方法
热变形温度  
0.45 MPa, 未退火 156°C ISO 75-2/B
1.8 MPa, 未退火 110°C ASTM D648
1.8 MPa, 未退火 102°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
线形膨胀系数  ISO 11359-2
流动 0.00010cm/cm/°C 
横向 0.00010cm/cm/°C 
充模分析 额定值单位制 测试方法
熔体密度 1.20g/cm³ Internal Method
熔体比热 2210J/kg/°C ASTM C351
熔体导热性 0.16W/m/K Internal Method
  
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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