橡胶加工助剂MT222对橡胶垫板胶料性能的影响

Effect of Rubber Processing Aid MT222 on Properties of Rubber Pad Compound

研究橡胶加工助剂MT222(简称MT222)对橡胶垫板胶料混炼能耗、加工性能、物理性能以及产品外观合格率的影响。结果表明:随着MT222用量的增大,混炼胶的混炼能耗和门尼粘度降低,焦烧时间延长,硫化胶的硬度、拉伸强度、老化后拉伸强度保持率和拉断伸长率保持率变化不大,拉断伸长率和工作电阻逐渐增大,200%定伸应力和静刚度先增大后减小,阿克隆磨耗量、动静刚度比和压缩永久变形先减小后增大;加入MT222能够减小橡胶垫板外观不合格率;MT222的适宜用量为3份。

The effect of rubber processing aid MT222(MT222 for short)on the mixing energy consumption,processing performance,physical properties and product appearance qualified rate of the rubber pad compound was studied.The results showed that with the increase of MT222 dosage,the mixing energy consumption and Mooney viscosity of the compound decreased,the scorch time was prolonged,the hardness,tensile strength,retention of tensile strength and retention of elongation at break after aging of the vulcanizates changed little,the elongation at break and working electrical resistance increased gradually,the modulus at 200%and static stiffness increased first and then decreased,the Akron abrasion,ratio of static and dynamic stiffness and compression set decreased first and then increased.In addition,adding MT222 could reduce the appearance failure rate of the rubber pad.The optimum amount of MT222 was 3 phr.