The materials conveyed by heat-resistant conveyor belt are generally materials with certain temperature. The coating adhesive of heat-resistant conveyor belt is in direct contact with high-temperature materials, so the wear resistance, adhesion and bending wear resistance of the coating adhesive are very high. The rubber coating formula of ordinary conveyor belt can not meet the requirements and is directly exposed to high temperature materials. The preferred material formulation of coating adhesive is to maintain stable physical properties in high temperature environment. Next, I'd like to introduce the heat-resistant coating formula material of Jingbo rubber conveyor belt.

　　1. 主要材料，普通輸送帶的包覆膠主要是天然橡膠，或少量添加SBR。SBR是耐高溫輸送帶包膠的主要原料。SBR包膠的碳化層具有較好的耐熱性和耐老化性。三元乙丙橡膠也可用作覆蓋材料。經(jīng)博橡膠多年生產(chǎn)經(jīng)驗(yàn)，在epdm橡膠中作為一種覆蓋膠原的材料，對(duì)覆蓋膠的抗氧化性和耐熱性都很好，缺點(diǎn)是地核和覆蓋膠的膠結(jié)度不夠，碳化形成緩慢。

　　1. Main materials, the coating rubber of ordinary conveyor belt is mainly natural rubber, or a small amount of SBR is added. SBR is the main raw material of high temperature resistant conveyor belt. The carbonized layer of SBR coating has good heat resistance and aging resistance. EPDM can also be used as a covering material. After years of production experience, EPDM rubber, as a kind of collagen covering material, has good oxidation resistance and heat resistance to the covering rubber. The disadvantage is that the cementation of the core and the covering rubber is not enough, and the carbonization is slow.

　　2. 硫化系統(tǒng)一般采用普通硫，橡膠中多硫鍵較多，但在熱氧老化階段性能迅速下降，碳化層在形成前已失去其價(jià)值。耐熱輸送帶更好采用硫體，使橡膠材料中單硫鍵和雙硫鍵的比例達(dá)到90%，熱氧老化階段的性能不降低，可形成碳化層。另外，為了保持碳化層開裂均勻，應(yīng)適當(dāng)增加氧化鋅的用量，以提高橡膠的導(dǎo)熱性。

　　2. ordinary sulfur is generally used in the curing system, and there are many polysulfide bonds in the rubber, but the performance of the vulcanization system declines rapidly in the hot oxygen aging stage, and the carbonization layer has lost its value before it is formed. Sulfur body is the best choice for heat-resistant conveyor belt, which can make the ratio of single sulfur bond and double sulfur bond in rubber material reach 90%. The performance of heat oxygen aging stage will not be reduced, and carbonization layer can be formed. In addition, in order to keep the cracking uniformity of the carbonized layer, the amount of zinc oxide should be increased properly to improve the thermal conductivity of the rubber.

　　3.炭黑是碳化層的主要成分，對(duì)碳化層的質(zhì)量起著重要的作用。炭黑用量越高，碳化層的使用壽命越長(zhǎng)。炭黑用量為67份時(shí)，碳化層的使用壽命更長(zhǎng)。

　　3. Carbon black is the main component of carbonation layer, which plays an important role in the quality of carbonation layer. The higher the carbon black content is, the longer the service life of the carbonized layer is. When the amount of carbon black is 67 phr, the service life of carbonized layer is the longest.

　　4. 防護(hù)系統(tǒng)需要抗老化劑BLE和RD。當(dāng)抗老化劑BLE達(dá)到1.5,RD達(dá)到0.8時(shí)，碳化層的使用壽命更長(zhǎng)。

　　4. protection system requires anti-aging agents BLE and RD. When the anti-aging agent BLE reaches 1.5 and RD reaches 0.8, the carbonization layer has the longest service life.