Today I‘ll tell you about the heat of the rubber conveyor belt material characteristics, what is the reason that allows two conveyor belts have to withstand high temperatures without melting capacity yet.
   Heat-resistant rubber conveyor characteristics , general conveyor various components of the plastic material used were plastic cover , cushion gum eraser fabric layers , fabric layer gum paste of four.
The first: plastic cover
    When used by the material conveyor impact, abrasion and microbial attack , and various aging effects . Therefore, the required plastic cover has good tensile strength (≥ 18Mpa) and wear resistance ( wear volume 0.8cm3/1.61Km), anti-aging , anti- biological erosion. Also required to have good technological properties such as viscosity , formulation design points are as follows : Baoding on tape Limited raw rubber or natural rubber-based and use the right amount of styrene-butadiene rubber , including rubber rate was controlled at 50% to 55%. Curing system using sulfur , accelerator traditional tie system . Natural rubber formulations, the amount of sulfur is 2.5 parts by mass ; in SBR formulations, the amount of sulfur is 1.5 to 2.0 parts by mass . Accelerator generally use M, DM and use , accelerator CZ, NOBS , etc. aftereffect accelerator suitable for containing styrene-butadiene rubber compound . Reinforcing agents can choose HAF , super wear-resistant carbon black , the amount of 40 to 50 parts by mass. Softeners often used varieties of oil, heavy oil, pine tar , coumarone resin and petroleum resin .
The second: Rubber Buffer
    Cushion rubber conveyor belt in a plastic cover and between the core layer , can increase the adhesion between the two , and transport of materials to absorb and disperse impact force dampening effect. Requirements compound has good adhesion ( plastic and cloth adhesion ≥ 3.15N/mm), elasticity, heat a small , good heat dissipation , process performance .
General use of raw rubber and butadiene rubber, natural rubber and use , gel was 50% to 55%. Preferable to use low-sulfur curing system with , and the fabric layer to improve the adhesion between the layers . Using accelerator M, DM, TMTD and with System . Carbon black used high abrasion and semi-reinforcing carbon black , the amount should not be excessive , usually in about 10 parts by mass . Softeners used tackifying better varieties , such as pine tar, solid Coumarone so on.
Third: Eraser
    Conveyor Eraser 's main role is to canvas with a core layer bonded into a whole. Requirements for core material with good adhesion properties ( adhesion between the fabric and the fabric strength of not less than 4.5N/mm), fatigue ( fabric layer flex frequency ≥ 2.5 million times / full stripping ) , and sufficient plasticity ( plasticity 0.5 to 0.6 ) and anti- scorch and other process performance.
Fourth: raw natural rubber-based rubber and 20 to 30 parts by mass of a styrene-butadiene rubber containing about 50% gum . With the general sulfur vulcanization system , accelerator system . Accelerator generally use M and DM and use, or add a small amount of TMTD, to speed up the cure rate , but pay attention to prevent the rubber scorch . Should be used in semi-reinforcing carbon black carbon black or other soft black , the amount of 10 parts by mass . Mixed with styrene-butadiene rubber eraser should be increased Coumarone amount of resin and petroleum resin , otherwise it will reduce the fabric layer adhesion.