Material
ACM (Polyacrylate Rubber)
Polyacrylate (ACM)
- As a generic term for polymers containing acrylic alkyl ester, it is nicknamed polyacrylate. The main ingredient consists of acrylic acid ester and as it has the principal chain of ethylene and lateral chain of ester that is very polar, it has excellent oil resistance, heat resistance, and ozone resistance compared to the general-purpose diene rubber.
- Acrylic rubber is broadly classified into old and new types, the old-type rubber is classified into ACM (copolymer of acrylic acid alkyl ester and 2-chloroethyl vinyl ether) that contains chloride and ANM (copolymer of acrylic acid alkyl ester and acrylonitrile) that does not contain chloride. In addition to significantly improved machinability, ANM has improved water resistance, cold resistance, and corrosion resistance to metal, and reduced valcunization time.
Application
- As a rubber with heat and oil resistance, it is mostly used for automotive oil seals or packing. It is mainly used in gaskets, hoses, automotive parts for controlling pollution, insulation, adhesives, construction sealants, and coatings.
Property table of materials (ASTM D2000)
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| Raw material name | Hardness (±5) | Tensile strength (kg/cm2) | Elongation ratio (%) | Commercial temperature (°C) |
|---|---|---|---|---|
| ACM | 40 ~ 80 | 61 ~ 92 | 100 ~ 250 | -10 ~ 160 |