Pumps and valves are widely used in industry, agriculture, and daily life. Their functions such as suction, pressure regulation, and throttling largely depend on diaphragms. Since the application scenarios of pumps and valves vary greatly, different operating environments impose diverse performance requirements on rubber diaphragms. The material used is key to determining their fundamental properties. Today, we will discuss the performance characteristics of various materials for reference.
EPDM (ethylene propylene diene monomer) is the preferred material for rubber diaphragms due to its excellent resistance to ozone and aging, as well as its relatively low cost. It holds a significant share in water pumps and air compressors. To enhance EPDM's performance further, various modifications have been developed over time. For instance, to improve elasticity and flame resistance, new modified versions such as chlorinated ethylene propylene and sulfonated ethylene propylene have been introduced. Therefore, when manufacturers mention using EPDM material for a certain product, it may actually refer to a modified form of EPDM.
Now let's talk about silicone rubber. Its most notable feature is that it is non-toxic and odorless, and can come into contact with food. Therefore, in places where rubber diaphragms are needed in food-related environments such as water dispensers and coffee machines, silicone rubber material is the preferred choice.
In addition, silicone rubber can retain a certain degree of elasticity and resilience even at 200°C. In European and American countries, kitchenware made of silicone rubber is very popular. Also, due to its minimal rejection reaction to the human body, it is widely used in the medical industry.
Finally, let's briefly talk about chloroprene rubber and nitrile rubber. Chloroprene has excellent resistance to acids, alkalis and chemicals, and is often seen in applications in the chemical industry. The greatest advantage of nitrile rubber is its oil resistance, so it has a significant advantage when transporting oil-based materials.
OK, the simple explanation about the rubber diaphragm material is over. There are many other rubber materials, but due to space limitations, we won't go into detail today. If you have any further questions or need business consultation, please feel free to contact us at any time.
Yongyong Silicone Rubber has been dedicated to silicone rubber diaphragms for 25 years. We offer a complete solution covering material research, mold development, and product manufacturing. Welcome to visit our factory for a tour.
