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A Study of Rubber Reinforcement by Modified Pyrolytic Carbon Black from Waste Tires

Author: LiZuo
Tutor: RenXiaoHong；YangYongRong
School: Zhejiang University
Course: Chemical Engineering
Keywords: Pyrolytic carbon black Surface modification Vulcanization curve Solid State NMR Rubber reinforcement
CLC: TQ330.1
Type: Master's thesis
Year: 2006
Downloads: 209
Quote: 3
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Abstract

With the increasing development of the polymer industry, how to eliminate waste polymers pollution, recycling resources, deep processing of the pyrolysis products, and has a very important significance for the the industrial ecological and recycling economy. Waste tires is the world's largest the waste polymers source one and its use of more and more national attention. Pyrolytic carbon black is the most critical one of the products of the pyrolytic process, the value of its application largely determines the pyrolysis process economics. How to scientifically characterize the nature of the pyrolytic carbon black, to increase its value, is the main content of the pyrolytic research. This thesis pyrolysis characteristics of the micro-structure of the carbon black surface, first proposed the \the methods and processes of resource utilization, mainly in the following aspects: 1. using atomic force microscopy to study the pyrolytic carbon black surface micro-structural features. The surface of the pyrolysis of the carbon black by a large number of obvious defects and distortions of the amorphous structure and a small amount by the rules of hexagonal ring composed of graphite-like microcrystalline level, and these levels are interlaced and cohesion, the pyrolysis process is not inorganic ash and active sites covered by carbonaceous deposits may exist at the edge of these levels. Morphological model proposed for the first time the complete pyrolysis of the carbon black \so constituted heterogeneity shell, the shell covering the majority of the active site. Design surface micro-chemical environment modified titanate coupling agent NDZ-105 on pyrolytic carbon black graft organic long chain, and strengthen the regeneration of the force of the molecular bond between the carbon black particles and natural rubber. 2 for the first time the use of high resolution solid state nuclear magnetic resonance (NMR) techniques in four aspects of chemical cross-linking structure, relaxation and diffusion, the the dipole correlation effects and the characteristics of self-diffusion of renewable carbon black vulcanizates reinforcing properties. The results showed that the different carbon black filled vulcanizates chemical crosslinking structure is similar. The long link sticks regeneration of carbon black TWPC particle surface strengthen the interaction with the natural rubber molecule. Renewable the carbon black TWPC reinforced vulcanizates permeability smaller, more waterproof; chemical crosslinking density has been largely improved. The 3 vulcanizates static mechanical test results show that the tensile strength of vulcanizates reinforced recycled carbon black TWPC been greatly improved. Renewable surface modified the carbon black TWPC can completely replace the commercial industrial semi-reinforcing carbon black. Heterogeneity of the regeneration of the silica reinforced rubber shell mechanism theory, the mechanism that the non-homogeneous multi shell plays a role in skeleton links molecular group of the crosslinked rubber and recycled carbon black surface

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