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Polymethyl methacrylate (PMMA) is plexiglass, commonly known as Acrylic, which is a non-crystalline plastic. The uses of polymethyl methacrylate are as follows: Mainly used in the production of decorations, sunglasses lenses, stationery, surfaces, instrument cases, lampshades, and billboards. The main properties of polymethyl methacrylate are as follows: 1. PMMA is difficult to catch fire and can burn slowly. 2. High transparency, light weight, not easy to deform, and good light guide. 3.
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According to statistics from authoritative organizations, as of September, the cumulative output of enterprises in the plastic products industry in 2013 has reached a staggering 44.6 million tons, an increase of 8.8% over the same period last year. Among them, the output of 5.56 million tons was completed in a single month in September. An increase of 8.7% year-on-year, and an increase of 6% compared with August. It can be seen from the statistics that the output of September increased rapidly,
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1. Good insulation and low thermal conductivity.2. Excellent colorability and low processing cost.3. Light weight, relatively stable and not easy to corrode.4. The low temperature resistance is relatively poor, and it is easy to become brittle in the low temperature state.5. It has good transparency and abrasion resistance.6. Some plastics are easily soluble in solvents.7. Slightly lower stability, easier to deform and aging. Plastics can be divided into two types: thermoplastic and thermosetti
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1. Change the shape of the surface of the plastic handle, for example, to make the handle relatively thinner to improve the stiffness and bending resistance of the handle. The longitudinal groove can well eliminate the possibility of deviation or deformation of the plastic handle under load.2. Make the thickness of the plastic wall uniform, try to make the shape of the handle symmetrical, reduce extreme stretch points, and use arcs for excessive areas. There are many ways to improve the plastic
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Cellulose acetate is usually called acid glue, which is a non-crystalline plastic. Its main properties are as follows: 1. Cellulose acetate has good water absorption properties and needs to be preheated and dried. 2. The molding shrinkage rate of cellulose acetate is small (0.2-0.7%), which is usually 0.5%, which is easy to decompose. When it is decomposed, it is corrosive to equipment and molds and causes rust. The mold should be chrome-plated, and there must be no dead corners. 3. The fluid
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