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[Chemical Knowledge]：What is the epdm material?

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EPDM is a thermoplastic elastomer, its full name is ethylene propylene rubber (Ethylene Propylene Diene Monomer). EPDM is widely used in various fields, such as construction, automotive, electronic and medical equipment. This article will introduce the characteristics, manufacturing process and application areas of EPDM.

1. the characteristics of EPDM

EPDM has excellent oxidation resistance, chemical resistance, anti-aging and weather resistance. These excellent properties make EPDM widely used. The following are the main characteristics of EPDM:

1. Temperature resistance: EPDM can work in high and low temperature environments. It performs well in the temperature range of -50°C to 130°C.

2. Ozone resistance: EPDM can be exposed to ozone environment for a long time without cracking.

3. Chemical resistance: EPDM has good resistance to many chemicals.

4. Aging resistance: EPDM can be used for a long time without fatigue cracking.

5. Good insulation: EPDM can be used for electrical electrostatic shielding and insulation.

6. environmental protection, do not produce pollution.

2. EPDM Manufacturing Process

EPDM is typically produced by high pressure or vacuum extrusion. The EPDM pellets are heated to a molten state during manufacture and the molten EPDM is extruded through a die or extruder.

In general, the production process of EPDM includes the following steps:

1. pre-mixed compounds: they are mixed into a mixture suitable for extrusion.

2. Pulverized particles: EPDM is divided into small particles to facilitate processing.

3. Extrusion Process: Extrusion of molten EPDM is achieved at high pressure and temperature.

4. Cooling and Cutting: The extruded product is rapidly cooled with water and cut into the desired size and shape.

5. Inspection: Check the product to ensure its quality.

3. EPDM application field

1. Construction field: EPDM is mainly used for roof covering, basement waterproofing and sound insulation, pipe sealing, thermostat sealing, door and window sealing, floor gasket and sound insulation gasket.

2. Automotive field: EPDM is widely used in the automotive industry due to its excellent fatigue resistance and temperature resistance. EPDM is useful in the performance of air conditioning systems, air supply pipelines and paint.

3. Electronics: Circuit boards and other electronic equipment in the electronics industry require the use of anti-static baffles and seals. EPDM can prevent static electricity, resist oxidation and maintain elasticity.

4. Medical use: EPDM is widely used in the medical industry for sealing and exhaust systems of various pipes and valves.