Properties of Branched Structure Nd-base Polybutadiene Rubber with Narrow Relative Molecular Mass Distribution

doi:10.11944/j.issn.1000-0518.2016.12.160399

Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (12): 1408-1414.DOI: 10.11944/j.issn.1000-0518.2016.12.160399

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Properties of Branched Structure Nd-base Polybutadiene Rubber with Narrow Relative Molecular Mass Distribution

ZHANG Hao^a,YU Qizhou^b,ZHANG Xinhui^b,LIU Jingsheng^a^*()

^aNational Engineering Laboratory for Wheat and Corn Deep Processing,College of Food Science and Engineering,Jilin Agricultural University,Changchun 130118,China
^b Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

Received:2016-09-30 Accepted:2016-10-25 Published:2016-12-05 Online:2016-12-05
Contact: LIU Jingsheng
Supported by:
Supported by the Program of Science and Technology Development Plan of Jilin Province(No.20150520132JH)

Abstract

Abstract:

The structure and properties of polybutadiene rubber(BR) with narrow molecular mass distribution synthesized by rare earth Nd catalysts(NMWD-NdBR) were studied and compared with those of the sample with a wider molecular weight distribution(WMWD-NdBR). The results show that NMWD-NdBR gets a steady rheological behavior under the same rotation rate. The scorch time and the optimum curing point of NMWD-NdBR are similar to those of WMWD-NdBR, but the minimum torque(M_L), maximum torque(M_H) and mechanical properties of NMWD-NdBR are slightly better than those of WMWD-NdBR. The data of rubber processing analyzer(RPA) show that the Payne effect of NMWD-NdBR are similar to those of WMWD-NdBR, and the hysteresis loss(tanδ) of NMWD-NdBR are superior to those of WMWD-NdBR. The results of tanδ data are in good agreement with those of carbon black dispersion, heat build-up, permanent set, as well as rolling resistance.

Key words: narrow molecular mass distribution, long chain branching, Nd-based butadiene rubber, payne effect, hysteresis loss

ZHANG Hao, YU Qizhou, ZHANG Xinhui, LIU Jingsheng. Properties of Branched Structure Nd-base Polybutadiene Rubber with Narrow Relative Molecular Mass Distribution[J]. Chinese Journal of Applied Chemistry, 2016, 33(12): 1408-1414.

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Properties of Branched Structure Nd-base Polybutadiene Rubber with Narrow Relative Molecular Mass Distribution

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