The heat-resistant conveyor belt is made of multi-layer rubber cotton canvas or polyester canvas with high temperature resistant or heat-resistant rubber. It is bonded together by high temperature vulcanization. It is suitable for conveying hot coke, cement, slag and hot castings below 175 °C. ! It is mainly used in metallurgy, construction and other industries to transport high temperature materials such as sinter, coke and cement clinker. The temperature of the material does not exceed 800 °C, and the surface temperature does not exceed 220 °C. This requires that the raw materials used in the heat-resistant conveyor belt must meet the production requirements. The following medium-duty conveyor belt manufacturers will introduce the production design requirements for everyone.
The most commonly used rubber grades for heat-resistant conveyor belt covers are SBR, IIR and EPR. At present, SBR is the most commonly used, but it is only suitable for use below 12O ° C; IIR's high temperature performance is better than SBR, but the process performance is poor, the price is too high, the domestic use is very small; EPR heat Both performance and price are moderate, suitable for the production of heat-resistant conveyor belts.
1. EGOOGLE PR has good heat resistance, and it is not easy to crack when used for a long time. Although the hardness is increased after heating, the degree of increase is much lower than that of SBR, and its hardness is improved after the hardness is increased. it has been improved. EPM vulcanization is too slow, so EPDM is used in production. In addition, EPDM has been produced in large quantities in China, and the price is much cheaper than IIR.
2. Promoter TMTD2, accelerator ZDC 1.5) The peroxide vulcanizate has the best heat resistance, but the vulcanization rate is slow. In order to increase the vulcanization rate, a small amount of sulfur and an accelerator may be added.
3. filling and strengthening system: Super wear-resistant furnace black 50) The strength of the rubber compound is high, the hardness is moderate, and the wear resistance is good. The rubber conveyor has the characteristics of heat-resistant belt, hard-wearing belt, burning-resistant belt, oil-resistant belt, alkali-resistant belt, alkali-resistant belt, heat-resistant belt and cold-resistant belt. It is mainly used for solid material transportation in mining, metallurgy, steel, coal, hydropower, building materials, chemical, food and other enterprises.