Celcon® M90-34
乙缩醛（POM）共聚物
Ticona

产品说明

Celcon® M90-34 is a specially formulated injection moldable grade of acetal copolymer for the appliance market targeted at resisting staining while providing a balance of properties.

Chemical abbreviation according to ISO 1043-1: POM    
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 • 抗污染   
RoHS 合规性 • 联系制造商    
形式  • 颗粒料    
加工方法  • 注射成型    
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)  8.00cm³/10min 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   2.2%  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   2550MPa  ISO 527-2/1A/1 
抗张强度      
屈服, 23°C  60.7MPa  ASTM D638 
屈服   63.0MPa  ISO 527-2/1A/50 
拉伸应变 (屈服)  11%  ISO 527-2/1A/50 
弯曲模量      
23°C   2590MPa  ASTM D790 
23°C   2450MPa  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)  7.4kJ/m²  ISO 179/1eA 
悬壁梁缺口冲击强度     
23°C   69J/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  100°C  ISO 75-2/A 
熔融温度 2  165°C  ISO 11357-3 
     ASTM D3418 
      
电气性能   额定值单位制  测试方法 
体积电阻率  1.0E+14ohm•cm ASTM D257 
      
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   
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Celcon® M90-34 2012年10月14日
乙缩醛（POM）共聚物
Ticona

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