New oligomer‐bound antioxidants in natural rubber/polybutadiene rubber and natural rubber/styrene–butadiene rubber blends

Abstract

New paraphenylene diamine antioxidants were prepared. The efficiency and permanence of these oligomer-bound paraphenylene diamines were compared with those of conventional amine-type antioxidants in elastomer blends such as natural rubber/styrene-butadiene rubber and natural rubber/polybutadiene rubber. These oligomerbound antioxidants showed improved aging resistance and ozone resistance in comparison with the blends containing conventional antioxidants. The liquid oligomer-bound paraphenylene diamine could replace the plasticizer required for compounding.

DFT investigations on the interaction of oxygen reduction reaction intermediates with Au (100) and bimetallic Au/M (100) (M = Pt, Cu, and Fe) surfaces

“…Nowadays, polybutadiene products are used in the manufacture of various catalysts. One of the catalytic systems used is cobalt acetate, which uses antioxidant for the stability of the polymer [1]. The stabilizers of polymers should effectively protect polymers from various, mostly radical-degrading, processes, be compatible with the polymer, and persist in the polymer [2][3][4][5].…”

Mechanical properties and blend compatibility of natural rubber –chlorosulfonated polyethylene blends

“…Natural rubber (NR) is deteriorated by ozone and thermal attack due to a highly unsaturated backbone, and it also shows low oil and chemical resistance due to nonpolarity. Improvement in the poor ozone, aging, and oil resistance of NR can be achieved by blending it with low/saturated rubbers and chlorinated rubbers, such as NR/EPDM blend,1–8 NR/SBR blend,9–12 NR/NBR blend,13–15 NR/BR blend,9 NR/CR blend,11, 16 NR/CPE blend,17–20 and NR/ULDPE blend 21…”

Mechanical properties and quantum mechanical simulations of natural rubber composites with cerium complexes under aging conditions

“…Currently, one main focus of the development of machine construction is the optimization of machine parts in terms of their resistance to abrasive wear. The phenomenon of intensive abrasive wear is encountered in many branches of industry, most prominently the extractive, concrete, ceramic, and metallurgical industries [1,2]. Abrasion is also a very important consideration during the performance of machines and devices for earthworks, which applied in agriculture and construction [3,4].…”

“…It was therefore important to study the process and mechanism of rubber aging and to take appropriate measures to improve the material's resistance to it. Among them, the addition of antioxidants was * E-mail: Liuzg65@163.com one of the most convenient and effective ways to prevent or delay the aging of NR [2]. Hindered phenolic antioxidant 2246, which was low in terms of toxicity and was environmentally friendly and highly compatible was widely used in industrial production.…”