The following is a detailed description of the material properties, characteristics and uses of NBR (nitrile rubber), SBR (styrene-butadiene rubber), CR (chloroprene rubber), EB (ethylene-vinyl acetate copolymer) and PU (polyurethane): 1. NBR (nitrile rubber) properties: Oil resistance: Excellent oil resistance, able to resist a variety of petroleum-based oils and lubricants. Wear resistance: Good wear resistance, suitable for high wear applications. Temperature range: -40°C to +100°C, some formulations can reach 120°C. Elasticity: Good elasticity and tear resistance. Features: Formulation flexibility: Performance can be adjusted according to needs. Processability: Easy to injection mold and press mold. Air tightness: Good air tightness, suitable for air seals. Uses: Automotive industry: used to manufacture seals, oil seals, fuel pipes and tires. Industrial applications: Used to manufacture various oil-resistant and wear-resistant industrial products, such as transmission belts and gaskets. 2. SBR (styrene-butadiene rubber) properties: Wear resistance: Excellent wear resistance, widely used in tires and industrial products. Anti-aging: Poor anti-aging, antioxidants need to be added. Temperature range: -50°C to +70°C, some formulas can reach 100°C. Elasticity: Good elasticity and recovery properties. Features: Cost-effectiveness: Low cost, suitable for large-scale production. Adjustable performance: The performance can be changed by adjusting the proportion of ingredients. Processability: Good processing performance, suitable for a variety of molding processes. Uses: Tire manufacturing: Widely used in automobile and motorcycle tires. Industrial products: Used in the manufacture of rubber shoes, tapes and gaskets, etc. 3. CR (Chloroprene) Performance: Weather resistance: Excellent weather resistance and UV resistance. Chemical resistance: Good resistance to chemicals such as acids, alkalis and oils. Temperature range: -40°C to +120°C. Elasticity: Good elasticity and tear resistance. Features: Flame retardant: Has certain flame retardancy. Anti-aging: Good anti-aging, suitable for long-term use. Processability: Good processing performance. Uses: Fireproof materials: Used for fireproof clothing and fireproof coatings. Seals: used to make various seals and waterproof materials. 4. EB (ethylene-vinyl acetate copolymer) Performance: Flexibility: good flexibility and elasticity. Water resistance: good resistance to water and moisture. Temperature range: -30°C to +70°C. Adhesion: good adhesion. Features: Transparency: can be made into transparent materials. Environmental protection: relatively environmentally friendly, suitable for food packaging. Processability: easy to process, suitable for extrusion and injection molding. Uses: Packaging materials: used for packaging of food and medicines. Adhesives: used to make adhesives and coatings. 5. PU (polyurethane) Performance: Wear resistance: excellent wear resistance, suitable for high wear environments. Elasticity: excellent elasticity and recovery properties. Temperature resistance: -30°C to +80°C, some special formulas can reach 120°C. Oil resistance: good resistance to certain oils and chemicals. Features: Diversity: can be made into hard or soft materials. Processability: can be processed in a variety of ways. Wide application: suitable for a variety of fields. Application: Footwear: used to make soles and uppers. Automobile: used for seats, interiors and seals. Furniture: used for cushions and furniture coatings. The above is a detailed introduction to the performance, characteristics and uses of five materials: NBR, SBR, CR, EB and PU. According to different application requirements, you can choose the right material to achieve the best effect.
