EPDM is a copolymer of ethylene, propylene and a small amount of third monomer non-conjugated diene. The international naming EthyienePropyeneDieneMethyiene is abbreviated as EPDM.

EPDM (EPDM) belongs to hard rubber, which is a kind of rubber with excellent performance. It is anti-aging, anti-corrosion, ozone-resistant, low temperature will not shrink, relatively stable, and can be used for more than ten years under the condition of constant quality.

EPDM sealing stripUsing microwave vulcanization process a molding, the surface is smooth and beautiful, has good elasticity and resistance to compression deformation, weather aging resistance, good stability, in high temperature environment is not easy to deformation, low temperature environment is not easy to shrink, it can be said that it is not only heat resistant, but also cold resistant, it can be used in -50~135 ℃ environment.

Silicone rubber is a rubber whose main chain is composed of silicon and oxygen atoms alternately, and two organic groups are usually connected to the silicon atom. Ordinary silicone rubber is mainly composed of methyl and a small amount of vinyl containing silicon oxygen chain. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano can improve the temperature resistance and oil resistance of silicone rubber.

Silicone rubber has good low temperature resistance and can generally work at -55°C. After the introduction of phenyl, up to -73. The heat resistance of silicone rubber is also very prominent, at 180 ℃ can work for a long time, slightly higher than 200 ℃ can withstand weeks or longer still elastic, instantaneous resistance to high temperatures above 300 ℃.

The gas permeability of silicone rubber is good, and the oxygen transmission rate is higher in synthetic polymers.

Silicone rubber sealing strip is the primary raw material for the production of silicone rubber, so it has a good insulation function, high and low temperature resistance, good resilience, and more importantly, there will be no smell,.

Silicone rubber sealThe strip is not only beautiful and elegant in color, soft to the touch, very elastic in stretching, but also has the characteristics of aging resistance, compression resistance, and water intrusion resistance. And it also has a very good embodiment in energy saving and environmental protection, sound insulation and noise reduction, anti ultraviolet, etc., which can effectively solve the problem of sealing reduction caused by sinking in the long-term use of wooden doors.

Some bad manufacturers will produce poor silicone sealant, reducing the amount of glue, the gloss of this strip is poor, and it will not age in a few years.