Vulcanized rubber powder is made of waste rubber as raw material by mechanical method, freezing method and other methods. It is a powder material with rubber elasticity. It can be used in the plastic industry. Plastic powder is used to toughen plastics, and polyvinyl chloride is one of them. In actual production, PVC toughened and modified with vulcanized rubber powder can be processed into various products through molding, lamination, calendering, injection molding, extrusion, etc.; tire rubber powder, nitrile rubber powder in vulcanized rubber powder It is a common material for PVC modification.
1. Application skills of tire rubber powder in PVC modification
The tire rubber powder processed from waste tires is often used as a dispersed phase when PVC is modified. The higher the fineness, the better the impact resistance of the PVC/tire rubber powder. It is recommended to use 80 mesh or higher. The impact strength of PVC material shows a trend of rapid increase at first, then slowly increase, and finally a significant decrease with the increase of tire rubber powder content. In actual production, when the amount of tire rubber powder is about 10% of the amount of PVC material, the impact performance of PVC rubber powder modified material is the best.
2. Application skills of nitrile rubber powder in PVC modification
Nitrile-butadiene rubber powder is a commonly used toughening modified material for PVC. The influence of the particle size and dosage of nitrile-butadiene rubber powder on PVC modified materials is as follows: The finer the nitrile-butadiene rubber powder 2ELYY92, the better the toughening effect in PVC materials. Well, it is recommended to use products with more than 60 meshes; with the increase of the amount of nitrile rubber powder, the notched impact strength of PVC material shows a trend of first decreasing slightly and then increasing rapidly. Use nitrile rubber powder to toughen and modify PVC materials, and it is recommended to use sulfur vulcanization.
3. Application example of nitrile rubber powder in PVC modification
When nitrile rubber/PVC is blended to prepare foamed thermal insulation materials, nitrile rubber powder can be used for modification. In actual production, the fineness and impurity content of nitrile rubber powder will affect the compactness, air permeability and water absorption of foamed insulation materials. It is recommended to use nitrile rubber powder of 80 mesh or more. It can be dispersed evenly and has little effect on the mechanical strength, compactness, air permeability and water absorption of the foamed material.
In the plastics industry, vulcanized rubber powder can be blended with polyethylene, polyvinyl chloride, polypropylene, polystyrene, thermoplastic elastomer and other plastics to improve the toughness of plastic materials and improve impact performance. When PVC is added with vulcanized rubber powder, an appropriate amount of compatibilizer can be used to modify the rubber powder, and then blended with PVC, the toughening effect is better. Later, the editor will continue to share with you other applications of vulcanized rubber powder in the plastics industry.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits