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[Chemical Knowledge]：Properties and Uses of Polymethyl Methacrylate

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Polymethyl methacrylate (PMMA) is a kind of polymer compound, which has excellent transparency, mechanical properties, weather resistance and electrical insulation, so it has a wide range of applications in the field of chemical production raw materials. This article will detail the properties and uses of polymethyl methacrylate.

1. The properties of polymethyl methacrylate

1. Transparency: PMMA has high transparency, with a light transmittance of 92%, which is similar to glass. Its transparency is not affected by the thickness, even if the thickness is large, it can still maintain a high transparency.
2. Mechanical properties: PMMA has good mechanical properties, high impact strength, 200 times that of glass, and high tensile strength, bending strength and hardness.
3. Weather resistance: PMMA has good weather resistance, can resist the erosion of natural factors such as ultraviolet rays, oxygen, moisture, etc., and is not easy to age and turn yellow.
4. Electrical insulation: PMMA has good electrical insulation and can be used to manufacture electrical insulation parts.

2. The use of polymethyl methacrylate

1. Construction industry: PMMA can be used to make building materials, such as glass curtain walls, skylights, roofs, etc., with high transparency and weather resistance.
2. Automotive industry: PMMA can be used to manufacture automotive lamps, windshields, etc., with high impact strength and transparency.
3. Optical industry: PMMA can be used to manufacture optical lenses, prisms, etc., with high transparency and good optical performance.
4. Electronics industry: PMMA can be used in the manufacture of electronic and electrical insulation parts, circuit boards, etc., with good electrical insulation.
5. Medical industry: PMMA can be used in the manufacture of medical devices, artificial joints, etc., with biocompatibility and good mechanical properties.

In short, polymethyl methacrylate has excellent properties and a wide range of uses, and is an important raw material for the production of chemical products. In practical applications, it is necessary to select the appropriate PMMA material and processing technology according to the specific use scenario and requirements to ensure its performance and quality.

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