Radici Compounds AC270    
    
乙缩醛（POM）共聚物    
    
Radici Plastics USA, Inc.   
     
 Technical Data    
     

产品说明

AC270 is an acetal copolymer with a viscosity suitable for injection molding applications where higher flow is required, such as in thin wall, multi-cavity or long flow path tools; it is internally lubricated for ease of mold release.

Acetal copolymer is a highly crystalline engineering thermoplastic based on trioxane, polymerized with a comonomer to provide exceptional thermal stability both in processing and for molded parts, which may be exposed to high temperature environments. Although somewhat less tough than the general purpose grade AC90, AC270 does exhibit the characteristics of a true engineering material; predictability of performance in a wide range of environments and for long periods of time. Performance characteristics combine excellent strength, rigidity and toughness, a unique resilience, outstanding static and dynamic fatigue resistance, natural lubricity and resistance to a very wide range of solvents, oils, greases and chemicals, including strong alkalis.

Extremely low moisture absorption results in excellent dimensional stability, and therefore an ability to hold precision tolerances in parts exposed to a wide range of humidity. Versatility and reliability make AC270 the cost effective material of choice for a wide range of applications in all major end-use categories.

总体

材料状态 • 已商用：当前有效   
资料 1 •  Technical Datasheet (English)
  
Search for UL Yellow Card •  Radici Plastics USA, Inc.
  
供货地区 • 北美洲   
添加剂 • 润滑剂   
 • 尺寸稳定性良好 • 抗溶解性 • 热稳定性，良好 
 • 刚性，高 • 耐化学性良好  
   • 韧性良好 
 • 高强度 • 耐碱  
性能特点   • 脱模性能良好 
 • 共聚物 • 耐疲劳性能  
   • 吸潮性差 
 • 结晶 • 耐油性能  
   • 有弹性 
 • 经润滑 • 耐油脂性能  
    
用途 • 薄壁部件 • 汽车领域的应用：  
外观 • 可用颜色 • 自然色  
形式 • 颗粒料   
加工方法 • 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
收缩率  ASTM D955
流动: 3.18 mm 2.4% 
横向流动 1.7% 
吸水率 (24 hr) 0.16% ASTM D570
机械性能 额定值单位制 测试方法
抗张强度 3 (屈服, 23°C, 3.18 mm) 64.1MPa ASTM D638
伸长率 3 (断裂, 23°C, 3.18 mm) 25 到 35% ASTM D638
弯曲模量 (23°C) 2480MPa ASTM D790
弯曲强度 (23°C) 91.0MPa ASTM D790
冲击性能 额定值单位制 测试方法
悬壁梁缺口冲击强度 (23°C, 3.18 mm) 64 到 75J/m ASTM D256
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
熔融温度 160 到 165°C 
  
注射 额定值单位制 
干燥温度 76.7 到 87.8°C 
干燥时间 1.0 到 2.0hr 
螺筒后部温度 188°C 
螺筒中部温度 193°C 

1 / 3 文件号： TDS-24240-zh
 
 
 
 
 
 
Radici Compounds AC270     
乙缩醛（POM）共聚物     
     
Radici Plastics USA, Inc.  
     
  注射 额定值单位制 
    
  螺筒前部温度 199°C 
  加工（熔体）温度 177 到 216°C 
  模具温度 71.1 到 104°C 
  背压 0.345MPa 
  螺杆转速 40 到 80rpm 
  垫层 3.18 到 6.35mm 

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