Acrylate polymer


Acrylate polymers are a group of polymers noted for their transparency, resistance to breakage, and elasticity. They are also commonly known as acrylics or polyacrylates. Acrylate polymer is commonly used in cosmetics, such as nail polish, as an adhesive.

Monomers

s, used to form acrylate polymers, are based on the structure of acrylic acid, which consists of a vinyl group and a carboxylic acid ester end or a nitrile. Other typical acrylate monomers are derivatives of acrylic acid, such as methyl methacrylate in which one vinyl hydrogen and the carboxylic acid hydrogen are both replaced by methyl groups, and acrylonitrile in which the carboxylic acid group is replaced by the related nitrile group.
Other examples of acrylate monomers are:
Acrylic elastomer is a general term for a type of synthetic rubber whose primary component is acrylic acid alkylester. Acrylic elastomer possesses characteristics of heat and oil resistance, with the ability to withstand temperatures of 170–180 ℃. It is used primarily for producing oil seals and packaging related to automobiles.
Acrylic elastomer can generally be characterized as one of two types. "Old" types include ACM containing chlorine and ANM without chloride. "New" types do not contain chlorine and are less prone to mold-related staining. Other than the slightly better water resistance of ANM there are no physical differences between the two types.
The material is less resistant in terms of cold weather with a saturation point of −15 ℃ for old types and −28 to −30 ℃ for new types. In terms of vulcanization, the standard method for the old type is amine vulcanization. To minimize permanent deformation, the old type requires curing for 24 hours at a temperature of 150 ℃. On the other hand, for the new type, the press curing time and follow-up vulcanization time are significantly reduced by combining metal soap and sulfur. It has no special characteristics. The rebound resilience and abrasion resistance of the new type are poor, and even its electrical characteristics are considerably poor compared with acrylonitrile-butadiene rubber and butyl rubber.

Uses