| Effect of Rubber Processing Aid MT222 on Properties of Rubber Pad Compound |
| Received:December 24, 2020 Revised:January 16, 2021 |
| DOI：10.12136/j.issn.1000-890X.2021.08.0604 |
| Key Words: rubber processing aid；rubber pad；mixing energy consumption；processing performance；physical property |
| Author Name | Affiliation | E-mail | | CHEN Chuanzhi* | Standards and Metrology Research Institute，China Academy of Railway Sciences Corporation Limited | chenchuanzhi@163.com | | QU Meng | Standards and Metrology Research Institute，China Academy of Railway Sciences Corporation Limited | | | DANG Jia | Standards and Metrology Research Institute，China Academy of Railway Sciences Corporation Limited | | | WANG Jue | Standards and Metrology Research Institute，China Academy of Railway Sciences Corporation Limited | | | ZHANG Xiaopei | Standards and Metrology Research Institute，China Academy of Railway Sciences Corporation Limited | |
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| Abstract: |
| 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. |
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