EPDM recycled rubber is an environmentally friendly material obtained from the recycling of waste EPDM rubber products, which has physical properties and chemical properties similar to the original EPDM rubber, and can be widely used in various EPDM rubber products. When producing low-hardness EPDM sealed shock absorbing gaskets, the choice of vulcanization formulation plays a crucial role. Hongyun EPDM recycled rubber low hardness sealing shock absorbing pad vulcanization reference formula:
Exxon 3666 EPDM rubber 15kg, Hongyun EPDM recycled rubber 50kg, clay 35kg, light calcium carbonate 30kg, paraffin oil 18kg; N550 carbon black 3.5kg, stearic acid 1.5kg, zinc oxide 2.2kg, EG-3 accelerator 2.2kg, sulfur 1.6kg; vulcanization temperature 150-160 °C, vulcanization time depends on the thickness, generally low temperature long-term vulcanized rubber hardness is lower; the above formula is for reference only, according to specific requirements and actual production conditions, appropriate adjustments can be made. Shore hardness is expected to change at 45-55,120°C aging time for 4 hours±4.
Low-hardness EPDM sealing cushions play an important role in many applications and offer the following advantages:
1. Sound shock absorption: The low hardness shock absorbing pad can effectively absorb shock and vibration forces, reduce the transmission of noise and vibration, and provide a more comfortable working and living environment.
2. Sealing performance: Because the low hardness shock absorbing pad has certain elasticity and flexibility, it can provide excellent sealing performance in sealing applications to ensure the normal operation and safety of the system.
3. Wear resistance: Due to the characteristics of the material, the low hardness shock absorbing pad can effectively resist friction and wear, prolong the service life and reduce maintenance costs.
4. Chemical resistance: EPDM regeneration rubber has good chemical resistance, and is not easy to deteriorate and damage when in contact with acids, alkalis, oils, solvents and other substances, and is suitable for applications in various harsh environments.
5. Environmental protection and sustainable development: the use of EPDM recycled rubber to produce low-hardness sealing shock absorbing pads helps the reuse of waste rubber, reduces environmental pollution, and conforms to the concept of sustainable development.
6. Lower cost of raw materials. The use of EPDM recycled rubber as the main material reduces the cost of raw materials by more than 20% compared with the use of EPDM rubber, which is conducive to reducing costs and increasing efficiency and improving product market competitiveness.
The low-hardness EPDM sealing shock absorbing gaskets produced by optimizing the vulcanization formulation and production process have a wide range of application prospects, with excellent sound insulation, sealing and wear resistance, while being environmentally friendly and in line with the requirements of sustainable development. With the further development of technology and the expansion of application fields, the application of EPDM reclaimed rubber in the field of low-hardness sealing shock absorbing gasket will receive more attention and promotion.
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