The role of zinc oxide in rubber products

　　The role of zinc oxide in the rubber tire industry: to improve the thermal conductivity, wear resistance, tear resistance, tensile strength and other indicators of the product

        The role of zinc oxide in rubber products: as a vulcanization active agent, its role is to enhance the activity of the accelerator, reduce the amount of accelerator, shorten the cycle of vulcanization, increase the crosslink density, and improve the physical and mechanical properties of the product.

        The role of zinc oxide in white latex: as a coloring agent and filler.

        The role of zinc oxide in neoprene: as a vulcanizing agent and a compounding agent to increase thermal conductivity.

        The role of zinc oxide in the sulfurization system

        1. Activated vulcanization system:

        ZnO and SA act to form zinc soap, improve the solubility of ZnO in rubber, and form a complex with good solubility in rubber with the accelerator, activate the accelerator and sulfur, and improve the vulcanization efficiency.

        2. Increase the crosslink density of vulcanizates:

        ZnO and SA form soluble zinc salts. The zinc salts are chelated with cross-linking bonds, which protect the weak bonds, cause short cross-linking bonds by vulcanization, and add new cross-linking bonds to increase the cross-linking density.

        3. Improve the aging resistance of vulcanized rubber:

        During the use of vulcanizate, the polysulfide bond is broken, and the generated hydrogen sulfide accelerates the aging of the rubber, but ZnO reacts with hydrogen sulfide to form zinc sulfide, which consumes hydrogen sulfide and reduces the catalytic decomposition of hydrogen sulfide to the crosslinked network; ZnO can suture broken sulfur bonds and stabilize the cross-linking bonds.

        ◆ Particle uniformity

        ◆ Purity or effective content

        ◆ Cu, Mn metal ion content