The price of black latex reclaimed rubber with the same index is lower than that of white latex reclaimed rubber. Substituting natural rubber to produce conveyor belts can reduce more raw material costs; black latex reclaimed rubber with high rubber content can directly replace natural rubber and be used in a higher proportion. Rubber conveyor belt production. In actual production, the tensile strength of black latex reclaimed rubber is slightly lower than that of natural rubber. Rubber products manufacturers need to take certain measures to increase the tensile strength of black latex reclaimed rubber conveyor belts and further improve the overall performance of reclaimed rubber conveyor belts.
1. High rubber content recycled latex and a small amount of natural rubber are used together
Natural rubber has high strength and is a typical self-reinforcing rubber. The main function of reclaimed latex rubber is to replace natural rubber and reduce the cost of raw materials. When using black latex reclaimed rubber to produce rubber conveyor belts, manufacturers choose latex reclaimed rubber with high effective rubber hydrocarbon content and use it with a small amount of natural rubber to effectively improve the tensile strength of black latex reclaimed rubber conveyor belts.
2. Compounding agent to improve the tensile strength of conveyor belt
When using black latex reclaimed rubber to produce rubber conveyor belts, rubber product manufacturers can use compounding agents that are beneficial to increase the tensile strength of the rubber. In actual production, use carbon black and white carbon black with small particle size and large specific surface area as reinforcing agents and increase the amount appropriately to increase the tensile strength of the latex reclaimed rubber conveyor belt; when sulfur vulcanization is selected, the double (diisopropyl) The combined use of thiophosphoryl disulfide and thiazole accelerator can increase the tensile strength of the latex conveyor belt; when the clay is filled, the silane coupling agent modified clay is selected to increase the tensile strength of the reclaimed rubber conveyor belt.
In order to further reduce the production cost of the black latex reclaimed rubber conveyor belt, when choosing filler powder, choosing a high-mesh rubber powder can effectively avoid the problem of a significant decrease in the tensile strength of the finished conveyor belt. In general, the smaller the particle size of the rubber powder, the less the tensile strength of the recycled rubber conveyor belt will decrease.
3. Compounding agent to reduce tensile strength of conveyor belt
Avoid or use less compounding agents that will reduce the tensile strength of the black latex reclaimed rubber conveyor belt, which can increase the tensile strength of the rubber conveyor belt to a certain extent. In actual production, the addition of plasticizers will significantly reduce the tensile strength of latex reclaimed rubber, such as bisbenzamide thiophenol 2LLYY87 or pentachlorothiophenol, avoid use as much as possible; reduce the amount of softeners such as rubber oil to increase the reclaimed rubber Tensile strength of conveyor belt. Avoid or reduce the amount of non-reinforcing fillers such as clay, calcium carbonate, talc, and chalk.
4. Improve the production process of latex reclaimed rubber conveyor belt
When black latex reclaimed rubber is used to produce low-cost rubber conveyor belts, improving the processing technology of latex reclaimed rubber and promoting the uniform dispersion of compounding agents in the rubber compound can increase the tensile strength of the reclaimed rubber conveyor belt. In actual production, rubber product manufacturers can improve the mixing technology to increase the dispersion of reinforcing fillers such as carbon black in the rubber, and then increase the tensile strength of the conveyor belt; strictly control each production process to avoid mixing impurities or undispersed For good large-particle components, sieving the powdery compounding agent if necessary.
To improve the tensile strength of black latex reclaimed rubber conveyor belts, rubber products manufacturers choose appropriate latex reclaimed rubber and compounding agents, reasonably adjust the types and amounts of compounding agents, improve the production process of reclaimed rubber conveyor belts, and further improve the pull of black latex reclaimed rubber conveyor belts. Stretching strength.
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