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What is the chemical composition of PMMA
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What is the chemical composition of PMMA

Views: 2     Author: Site Editor     Publish Time: 2024-10-14      Origin: Site

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What is the chemical composition of PMMA

The chemical composition of PMMA is polymethyl methacrylate, which is a polymer compound polymerized from methyl methacrylate. PMMA, also known as plexiglass or acrylic, has the advantages of high transparency, low price, easy machining, etc., and is a commonly used glass alternative material. The following is a detailed analysis of the chemical composition and properties of PMMA:

Chemical composition

Basic composition: PMMA is a polymer formed by the polymerization of methyl methacrylate (MMA) monomer.

Chemical formula: Usually expressed as (C5O2H8)n, where n represents the degree of polymerization, that is, the number of monomer units.

Physical property

Transparency: PMMA is highly transparent, able to penetrate more than 92% of sunlight, and UV transmission reaches 73.5%.

Density: Its density ranges from 1.15 to 1.19 g/cm³.

Melting point and boiling point: The melting point is about 150 ° C, and the boiling point is relatively low, 121.5 ° C (note that the boiling point here may refer to the boiling point of monomer MMA, because polymers usually do not have a fixed boiling point).

Chemical property

Solubility: PMMA can be dissolved in organic solvents such as carbon tetrachloride, benzene, toluene, dichloroethane, trichloromethane and acetone.

Stability: Chemically relatively stable, but under aerobic conditions, PMMA starts to burn at 458°C, resulting in carbon dioxide, water, carbon monoxide and some low molecular compounds including formaldehyde.

Application field

Due to its excellent physical and chemical properties, PMMA has a wide range of applications in a number of fields, including but not limited to:

Construction: Used as transparent structural parts, such as Windows, skylights, etc.

Automotive industry: Used for car lights, instrument panels and other components.

Optical field: Production of optical lenses, lenses, etc.

Daily necessities: such as decorative gifts, billboards, etc.

In summary, the chemical composition of PMMA is polymethyl methacrylate, a polymer compound that plays an important role in many industries with its unique properties.


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