What are the advantages of EPDM sealing strips

EPDM sealing strip is one of the commonly used sealing strips, which is widely used because of its excellent anti-aging and weather resistance. It is usually used in automobiles, door and window sealing strips, various outdoor sealing products, refrigerators, and various household appliances. No matter what kind of material is sealed, it has its advantages, so is the EPDM sealing strip good? What are the advantages? Here to introduce the advantages of EPDM sealing strip.

1. Good aging resistance

EPDM sealing strip has good weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical properties, oil filling and room temperature fluidity;EPDM sealing stripavailable inIt can be used at a temperature of 120°C and can be used temporarily or intermittently at a temperature of 150-200°C. Adding suitable antioxidants will increase its use temperature.

2. Good corrosion resistance

Ethylene propylene diene sealants lack polarity and low saturation, making them suitable for a variety of polar chemicals. For example, alcohols, acids, alkalis, oxidants, refrigerants, detergents, animal and vegetable oils, ketones, and fats.

3. Good water vapor resistance

EPDM sealing striphas good water vapor resistance, estimated to be better than its heat resistance, inThere was no change in appearance after nearly 100 hours in superheated steam at 230°C. Fluororubber, silicone rubber, fluorosilicone rubber, butyl rubber and natural rubber deteriorate in appearance after aging for a short time under the same conditions.

4. High temperature resistance

EPDM sealing stripThe resistance to superheated water is higher, but it is related to the curing system.

5. Good mechanical properties

bimorph andThe mechanical properties of TMTD vulcanized ethylene-propylene rubber were not changed much after being soaked in hot water at 125 ℃ for 15 months, and the volume expansion rate was only 0.3%.

6. Good electrical performance

EPDM sealing strip has excellent electrical insulation and corona resistance, and its electrical performance is better than or close to styrene butadiene rubber, chlorosulfonated polyethylene, polyethylene and cross-linked polyethylene.

7. Good flexibility

EPDM sealing stripThere is no polar substituent in the molecular structure, the molecular cohesion is very low, and the molecular chain maintains flexibility in a wide range, second only to natural rubber and butadiene rubber, and can maintain low temperature.