A method for improving zinc oxide vulcanization activity

Abstract

The invention relates to a method for improving zinc oxide sulfuration activity and belongs to the technical field of natural rubber processing. The method comprises adding 0.5-10 parts of rare earth oxide into 100 parts of common zinc oxide and carrying out ball milling and high temperature sintering rare earth doping. According to inherent characteristics of rare earth, zinc oxide particle conformation structure and ion surface chemical properties are changed, sulfuration activity is improved, a use ratio of zinc oxide in the rubber formula is reduced from 5: 100 to 2: 100, sulfuration time is shortened, natural vulcanized rubber crosslinking density and mechanical properties are improved and reasonable utilization and saving of a zinc ore resource are realized.

Description

technical field

[0001] The invention relates to a method for improving the vulcanization activity of zinc oxide, which belongs to the technical field of natural rubber processing. Background technique

[0002] The production of natural rubber products generally includes process steps such as mixing, calendering, lamination, molding, shaping, and vulcanization. Among them, the vulcanization process significantly affects the various properties and service life of rubber products, and is one of the most critical process steps in the production of rubber products. one. The vulcanization of natural rubber is a process in which sulfur cross-links rubber molecular chains through monosulfide bonds or polysulfide bonds to form a network structure. In the design of the vulcanization system, accelerators and active agents such as zinc oxide must be added to shorten the vulcanization time and improve the product. mechanical properties.

[0003] As the most common vulcanization activat...