Polyvinyl chloride (PVC) is one of the most common plastic products. It can be used together with tread reclaimed rubber to produce thermoplastic elastomers, tread reclaimed rubber/PVC blends. Process conditions, tread reclaimed rubber and PVC blend ratio The type and amount of compounding agent will affect the comprehensive performance of the thermoplastic blended elastomer. The compatibilizer is a common compounding agent for improving the mechanical indexes of the tread reclaimed rubber/PVC blending material in rubber and plastics processing enterprises.
The compatibilizer is a combination of intermolecular bonding forces, which promotes the incorporation of two incompatible polymers to obtain a stable outdoor compounding agent; the tread reclaimed rubber is a rubbery characteristic processed from a waste tire tread. Recycled raw material, PVC is a white powder with a small degree of branching amorphous structure; the blended tread reclaimed rubber will be in the rubber phase, the polyvinyl chloride will be in the plastic phase, and the compatibilizer will be adjusted in the second The important compounding agent in the blending state improves the compatibility between the components and strengthens the interaction between the interfaces. Its type and amount directly affect the properties of the tread reclaimed rubber/PVC blend material.
1. Types of compatibilizers in tread reclaimed rubber/PVC blending materials
Blend materials prepared from tread reclaimed rubber and PVC. If no compatibilizer is added, the mechanical properties and elasticity of the blended materials are relatively poor. CR, CPE and NBR are all alternative compatibilizers, which can significantly improve the tread. Tensile strength and tear strength of reclaimed rubber/PVC blends. Studies have shown that tread reclaimed rubber/PVC blending materials using NBR such as NBR-18, NBR-26, and NBR-41 as compatibilizers can better improve the properties of blended materials.
2. The amount of compatibilizer in tread reclaimed rubber/PVC blending material
The mechanical properties of tread reclaimed rubber/PVC blends will increase with the increase of the amount of compatibilizer, but the excessive amount will lead to the degradation of the mechanical properties of the blends, preferably between 4-10 parts. The optimum value was obtained through experiments; in the actual preparation process, the compatibilizing effect of the compatibilizer in the tread reclaimed rubber/PVC is related to the ratio of the tread reclaimed rubber to the PVC, and the equivalent amount of the compatibilizer is in the PVC content. The compatibilization effect in the blended material is better.
The blended material of rubber and plastic blending has the dual characteristics of rubber and plastic, which can achieve complementary performance. It is the “polymer alloy” in the current manufacturing industry, and the new high prepared by blending tread rubber and polyvinyl chloride. Molecular materials can be used in various industries, which can improve the performance of products, reduce production costs, reduce environmental pollution caused by used tires, further improve the performance of tread reclaimed rubber/PVC blending materials, and expand the scope of use. An important study that benefits both the economy and the environment.
It seems that tread reclaimed rubber can not only be used in the production of rubber products to reduce the cost of raw materials, but also has a broader world.