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2009•Journal of Jilin Institute of Architecture & Civil EngineeringRequires access

The Influence Factors of the Molar Mass of Nd-based Polybutadiene Rubber

Hongguang Cai

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Abstract

The Nd-based BR is the major material of tread compound and sidewall compound.The molar mass which strongly influences the performance of raw rubbers during the preparation of rubber compounds could be controlled in the polymerization process.The main factors influencing the molar mass of BR include the polymerization temperature;nM/nNd;ncocatalyst/nNd and the primary additive.This paper concluded the effect of them,emphatically discussed the effect of ncocatalyst/nNd ratio from two aspects of binary-Nd catalyst systems and ternary-Nd catalyst systems and compared their influence efficiency,then presented the methods controlling molar mass,and their relative merits.

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What this paper is about

The Nd-based BR is the major material of tread compound and sidewall compound.The molar mass which strongly influences the performance of raw rubbers during the preparation of rubber compounds could be controlled in the polymerization process.The main factors influencing the molar mass of BR include the polymerization temperature;nM/nNd;ncocatalyst/nNd and the primary additive.This paper concluded the effect of them,emphatically discussed the effect of ncocatalyst/nNd ratio from two aspects of binary-Nd catalyst systems and ternary-Nd catalyst systems and compared their influence efficiency,then presented the methods controlling molar mass,and their relative merits.

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Available abstract

The Nd-based BR is the major material of tread compound and sidewall compound.The molar mass which strongly influences the performance of raw rubbers during the preparation of rubber compounds could be controlled in the polymerization process.The main factors influencing the molar mass of BR include the polymerization temperature;nM/nNd;ncocatalyst/nNd and the primary additive.This paper concluded the effect of them,emphatically discussed the effect of ncocatalyst/nNd ratio from two aspects of binary-Nd catalyst systems and ternary-Nd catalyst systems and compared their influence efficiency,then presented the methods controlling molar mass,and their relative merits.

Key concepts: Molar mass, Polybutadiene, Molar ratio, Polymerization, Molar, Natural rubber, Materials science, Ternary operation

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