Rubber conveyor belt is one of the most common rubber products in production. The use of recycled rubber in the production of rubber conveyor belt can reduce production cost and improve market competitiveness. The softener can improve the process performance of the rubber compound in the production of recycled rubber products, and can also improve the comprehensive performance of the recycled rubber conveyor belt. It is well known that different rubber layers of rubber conveyor belts have different performance requirements for rubber compounds. Then, when using recycled rubber to produce different rubber layers for conveyor belts, is there a difference in softener selection?
1. Recycled rubber conveyor belt cover rubber commonly used softener
The reclaimed rubber conveyor belt cover rubber needs to withstand the impact and wear of the material during the working process of the conveyor belt. In some special occasions, it also needs to resist the erosion of microorganisms and the aging factors in the surrounding environment, requiring the rubber material to have high strength and high wear resistance. In addition to aging and tear resistance, the compound is also required to have good adhesion. The pine tar, coumarone, petroleum resin, engine oil and heavy oil in the rubber softener can give the reclaimed rubber compound better adhesion.
2. Recycled rubber conveyor belt buffer rubber commonly used softener
The reclaimed rubber conveyor belt buffer layer between the cover rubber and the core layer can absorb the impact force of the cover rubber, mainly buffering effect. The buffer rubber needs to “connect” the cover rubber and the core layer because of the high adhesiveness to the rubber compound. In actual production, it is necessary to select rubber softeners with remarkable viscous effect in the formula of reclaimed rubber conveyor belt buffer rubber, such as coumarone and pine tar. The coumarone resin 1JLYY1018 generally chooses solid coumarone.
3. Recycled rubber conveyor belt wipes rubber commonly used softener
Taking the canvas core conveyor belt as an example, the main function of the rubber is to bond the cored canvas, so the adhesiveness of the rubber is generally required; when using the recycled rubber to prepare the conveyor belt, the couma resin It is more common with petroleum resins in softening systems. Rubber conveyor belt manufacturers also need to increase the amount of coumarone or petroleum resin to ensure the adhesion of rubber.
In summary, when using reclaimed rubber to produce conveyor belts, each adhesive layer of the conveyor belt imposes strict requirements on the adhesiveness of the rubber compound. Therefore, in the softening system of the recycled conveyor belt, the rubber product manufacturer needs to select a rubber softening effect with remarkable viscous effect. Compared with engine oil, heavy oil and pine tar, the solid coumarone resin and petroleum resin have better viscosity-increasing property. Reclaimed rubber conveyor belt manufacturers can reasonably determine the amount of rubber softener in each rubber layer of reclaimed rubber conveyor belt according to actual needs.