Innovative γ rays irradiated styrene butadiene rubber/reclaimed waste tire rubber blends: a comparative study using mechano-chemical and microwave devulcanizing methods

被引：14
作者：
El-Nemr, Khaled F. [1 ]
Raslan, Heba A. [2 ]
Ali, Magdy A. M. [1 ]
Hasan, Medhat M. [2 ]
机构：
[1] Egyptian Atom Energy Author, Radiat Chem Dept, Natl Ctr Radiat Res & Technol, POB 29 Nasr City, Cairo, Egypt
[2] Egyptian Atom Energy Author, Polymer Chem Dept, Natl Ctr Radiat Res & Technol, POB 29 Nasr City, Cairo, Egypt
来源：
JOURNAL OF POLYMER ENGINEERING | 2020年 / 40卷 / 03期
关键词：
gamma radiation; mechano-chemical devulcanization; microwave devulcanization; styrene-butadiene rubber; waste tire rubber; DYNAMIC-MECHANICAL PROPERTIES; POWDER; GRT; SBR;
D O I：
10.1515/polyeng-2019-0307
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Waste tire rubber was comparatively devulcanized by using two-roll mill mechano-chemical and microwave techniques at room temperature. The former technique was performed utilizing tetramethylthiuram disulfide and mercaptobenzothiazole disulfide. The developed devulcanized elastomer was characterized by scanning electron microscopy, chemical soluble fraction indication, and cross-link density determination. The blend was mixed in two roll mills by replacing a portion of virgin styrene-butadiene rubber (SBR) in a common formulation with the devulcanized waste rubber (DWR) product at various ratios, namely 10, 20 and 50 wt%. The morphological micrographs confirmed marked improvement in compatibility between both rubbery materials. The tensile strength and elastic modulus examinations of the fabricated blends ensured successful substitution of the virgin SBR with DWR. The abrasion resistance of SBR proved unaffected by blending with DWR. The compounded blends were subjected to gamma rays at different radiation doses elevated up to 200 kGy and comparatively mechanically investigated.
引用
收藏
页码：267 / 277
页数：11
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