2003•China Rubber IndustryRequires access

Study on structure and properties of NR/BR/NBR blend

Demin Jia

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Abstract

The structure and properties of NR/BR/NBR blend were investigated. It was found through the analysis by TEM that as the proportion of NBR increased;the distribution of carbon black tended to more even;two glass transition temperatures existed in the blend;the tanδ at 0 ℃ increased greatly and the tanδ at 65 and 80 ℃ decreased at first and then increased in a small range; and the physical properties of blend changed little. A new type of tread compound based on NR/BR/NBR with good wet traction,low rolling resistance and low heat build-up could be obtained by adjusting the proportion of NBR in the blend.

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The structure and properties of NR/BR/NBR blend were investigated. It was found through the analysis by TEM that as the proportion of NBR increased;the distribution of carbon black tended to more even;two glass transition temperatures existed in the blend;the tanδ at 0 ℃ increased greatly and the tanδ at 65 and 80 ℃ decreased at first and then increased in a small range; and the physical properties of blend changed little. A new type of tread compound based on NR/BR/NBR with good wet traction,low rolling resistance and low heat build-up could be obtained by adjusting the proportion of NBR in the blend.

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Available abstract

The structure and properties of NR/BR/NBR blend were investigated. It was found through the analysis by TEM that as the proportion of NBR increased;the distribution of carbon black tended to more even;two glass transition temperatures existed in the blend;the tanδ at 0 ℃ increased greatly and the tanδ at 65 and 80 ℃ decreased at first and then increased in a small range; and the physical properties of blend changed little. A new type of tread compound based on NR/BR/NBR with good wet traction,low rolling resistance and low heat build-up could be obtained by adjusting the proportion of NBR in the blend.

Key concepts: Materials science, Tread, Carbon black, Composite material, Glass transition, Natural rubber, Polymer

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