不同用量和种类炭黑对热塑性聚烯烃弹性体胶料性能的影响  

Effects of Different Amounts and Types of Carbon Black on Properties of POE Compounds

作　　者：刘青 LIU Qing(Cooper-Standard Investment Co.,Ltd,Shanghai 200335,China)

机构地区：[1]库博标准投资有限公司,上海200335

出　　处：《橡胶工业》2022年第1期45-49,共5页China Rubber Industry

摘　　要：研究不同用量和不同种类炭黑(导电炭黑CSX946和VXC72以及炭黑N550)填充热塑性聚烯烃弹性体(POE)胶料的导电性能和物理性能。结果表明:在试验的炭黑用量范围(30~80份)内,随着导电炭黑CSX946用量的增大,POE胶料的体积电阻率降低,邵尔A型硬度和100%定伸应力增大,拉伸强度和拉断伸长率呈减小趋势,当导电炭黑CSX946用量为80份时,POE胶料的体积电阻率最小,邵尔A型硬度最大,拉伸强度和拉断伸长率仍可满足车身用障碍物检测传感器的指标要求;在3种炭黑中,导电炭黑CSX946的粒径最小、比表面积最大和结构性最高,导电炭黑CSX946(用量80份)填充的POE胶料的体积电阻率最小,100%定伸应力和拉伸强度最大;与仅用80或45份导电炭黑CSX946填充POE胶料相比,导电炭黑CSX946与硬脂酸钙或硬脂酸锌配合使用填充POE胶料的体积电阻率变化不大。The electrical conductivity and physical properties of thermoplastic polyolefin elastomer(POE)compounds filled with different amounts and types of carbon black(conductive carbon black CSX946 and VXC72 and carbon black N550)were studied.The results showed that,within the tested range of carbon black amount(30~80 phr),with the increase in the amount of conductive carbon black CSX946,the volume resistivity of the POE compound decreased,the Shore A hardness and modulus at 100%elongation increased,and the tensile strength and elongation at break were decreasing.When the amount of conductive carbon black CSX946 was 80 phr,the volume resistivity of the POE compound was the lowest,the Shore A hardness was the largest,and the tensile strength and elongation at break could still meet the performance requirements of car body obstacle detection sensor.Among the three types of carbon black,the conductive carbon black CSX946 had the smallest particle size,the largest surface area and the highest structure,the conductive carbon black CSX946(80 phr of the amount)filled POE compound had the smallest volume resistivity and the largest modulus at 100%elongation and tensile strength.Compared with the POE compound filled with only conductive carbon black CSX946 at the amount of 80 or 45 phr,the volume resistivity of the POE compound filled with the same amount of conductive carbon black CSX946 and processing additive calcium stearate or zinc stearate did not change much.

关 键 词：热塑性聚烯烃弹性体 导电炭黑 体积电阻率 物理性能 车身障碍物检测传感器 

分 类 号：TQ334.2[化学工程—橡胶工业] TQ330.381