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橡塑技术与装备（橡胶） CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT (Rubber)

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Carbon black enhance properties of natural rubber composites

1
2
1
You Qi , Mei Jing , Hu Qi , Chen Chunhua , Xin Zhenxiang 2
1
(1.Jiangxi Blackcat Carbon Black Co. LTD., Jingdezhen 333000, Jiangxi, China;
2. Qingdao University of Science & Technology, Qingdao 266042, Shandong, China)
Abstract: In this paper, the influence of new carbon black, N330 and N550 on natural rubber composites
were studied, and the filler-network mechanism of reinforcing filler was explored. The results show that，with
the increase of new modified carbon black，tensile strength first decreased and then tended to be gentle,
elongation at break and compression set were decreased，and DIN abrasion volume decreased firstly and
then increased, and tear strength increased and then decreased. The comprehensive performance is better
when dosage of the new modified carbon black was 50 phr. There is a critical value between N330 and N550
dosage of 35-50 phr, and the storage modulus of the compounds increased suddenly, and strong Payne
effect appeared. The formation of the filler-network included the interaction between the carbon black
reinforcing element and the interaction of carbon black particles. The percolation phenomenon was existed
at the process of forming a network structure.
Key words: carbon black; natural rubber; percolation; Payne effect
(R-05)

·10· 第 43 卷 第 23 期