The core characteristics and performance indicators of rubber products

The core characteristics and performance indicators of rubber products
Elasticity and resilience: The core characteristics of rubber, which determine the cushioning and shock absorption capabilities of the products (such as the grip and shock absorption of tires, and the vibration absorption of shock pads).
Wear resistance: Measured by the wear volume (such as the wear volume of industrial rubber sheets ≤ 0.8 cm³/1.61 km), it determines the service life of the products.
Temperature resistance: The long-term operating temperature range of different rubbers varies greatly (silicone - -50°C - 250°C, natural rubber - 40°C - 80°C), and it needs to be matched with the scenarios.
Chemical resistance: The ability to resist oil, acids, alkalis, and aging (ozone, ultraviolet rays), which determines the stability of the products in complex environments (such as nitrile rubber's resistance to oil, ethylene propylene diene monomer's resistance to aging).
Electrical insulation: The insulating rubber sheets must meet the breakdown strength ≥ 15 kV/mm to ensure the electrical safety of scenarios such as distribution rooms and power plants.
The production process flow of rubber products
Formula design: Determine the proportions of rubber base materials, vulcanizing agents, fillers (such as carbon black to enhance wear resistance), and antioxidants (to delay aging).
Mixing: Mix the rubber and additives evenly in a twin-screw mixer to form a stable rubber compound.
Molding: Form the initial shape of the products through methods such as calendering, injection, or compression molding (such as the tread and sidewall bonding of tires).
Vulcanization: Under high temperature and high pressure, use vulcanizing agents to crosslink the rubber molecules, forming a network structure, and giving the products their final properties such as elasticity and strength (the degree of vulcanization directly affects the product's lifespan).
Post-processing: Include trimming, grinding, and inspection (size, hardness, tensile strength, etc.) to ensure the finished products meet the standards.
Key points for selecting rubber products
Scene matching: Choose the material based on the usage environment (temperature, medium, stress). For example:
For high-temperature environments (such as around the engine), choose silicone and polyurethane;
For oil-resistant environments (such as hydraulic systems), choose nitrile rubber and fluorine rubber;
For long-term outdoor use (such as building sealing strips), choose ethylene propylene diene monomer (EPDM) rubber.
Performance compliance: Focus on verifying key indicators (such as the breakdown strength of insulating rubber sheets, the damping coefficient of shock absorbers), and require suppliers to provide third-party test reports.