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What are the commonly used transparent plastics

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the commonly used transparent plastics are as follows:

1. Polymethylmethacrylate (PMMA)

commonly known as plexiglass, is the plastic with the best optical performance. The mechanical and electrical properties of PMMA are general, the coefficient of thermal expansion is 8-10 times that of inorganic glass, the long-term service temperature is only 80 ℃, and the moisture absorption is high

2. Polystyrene (PS)

together with PMMA and PC are called the three transparent plastics. Its optical performance is worse than PMMA, but its moisture absorption is low, and the weather resistance of PS products is poor. It will turn yellow and turbid after long-term storage and sunlight

3. Polycarbonate (PC)

is a transparent engineering plastic with excellent comprehensive properties, and the optical properties of PC are only lower than PMMA. However, it is heat-resistant and cold resistant, and can maintain stable mechanical properties in the range of – 135-120 degrees

4. Styrene acrylonitrile is often abbreviated as as and San

contains acrylonitrile monomer with mass fraction of 20% – 30%, and the rest are copolymerized with styrene monomer. The transmittance of as is equivalent to that of PS, but the refractive index is slightly lower. The maximum continuous service temperature of as material is 10 degrees higher than that of PS, and the mechanical properties, weather resistance and stress cracking resistance have also been improved

5. Styrene methyl methacrylate copolymer (MS)

is composed of 70% styrene and 30% methyl methacrylate copolymer. The transmittance of the copolymer is better than that of PS and maintains the good fluidity of PS

extended data :

PMMA resin is not easy to produce sharp fragments when broken. Countries and regions such as the United States and Japan have made mandatory provisions in laws. PMMA resin must be used for architectural glass in primary and secondary schools and kindergartens

the pace of urban construction has been accelerated all over the country, with a large number of street signs, advertising light boxes and telephone kiosks. A considerable part of the materials used are PMMA resin. Green PMMA resin is also widely used in outdoor color building materials of Beijing Olympic project

characteristics of PMMA raw materials:

colorless and transparent, with light transmittance of 90% – 92%, strong toughness and more than 10 times larger than silicon glass

good optical property, insulation, processability and weather resistance

dissolved in organic solvents such as carbon tetrachloride, benzene, toluene, dichloroethane, chloroform and acetone

it has high transparency and brightness, good heat resistance, tenacity, hard quality and rigidity. The thermal deformation temperature is 80 ℃ and the bending strength is 110MPa

density 1.14-1.20g/cc, deformation temperature 76-116 ℃, molding shrinkage 0.2-0.8%

linear expansion coefficient 0.00005-0.00009 /℃, thermal deformation temperature 68-69 ℃ (74-107 ℃)

advantages of Plastics:

1. Most plastics have strong corrosion resistance and do not react with acid and alkali

2. Low manufacturing cost of plastics

3. Durable, waterproof and light

4. Easy to be molded into different shapes

5. It is a good insulator

6. Plastics can be used to prepare fuel oil and fuel gas, which can reduce crude oil consumption

reference : optical plastics – Baidu Encyclopedia

Plastics with high transparency include PC, PMMA, as, PSU, etc. the light transmittance is about 90%, and the effect is very good. PVC (polyvinyl chloride)

1. PS (polystyrene)

2. Polymethylmethacrylate (commonly known as plexiglass)

3. Methyl methacrylate (commonly known as acrylic)

4. PC (polycarbonate)

extended data

polycarbonate (PC) resin is a thermoplastic engineering plastic with excellent properties. The properties of PC are high impact strength, stable size, colorless and transparent, good coloring, good electrical insulation, corrosion resistance and wear resistance, but poor moisture and smoothness, stress cracking tendency, easy hydrolysis at high temperature and poor compatibility with other resins

due to its colorless, transparent and excellent impact resistance, the common daily applications of carbonate (PC) include optical disc, eye piece, water bottle, bulletproof glass, goggles, bank bullet proof glass, headlights, etc

carbonate (PC) is also used to make helmet masks for astronauts on the moon. Apple’s iPod music player and iBook laptop case are also made of polycarbonate

reference Baidu Encyclopedia & nbsp; Plastic

transparent plastics include:

PVC

ps

polymethylmethacrylate (commonly known as plexiglass)

methyl methacrylate (commonly known as acrylic)

PC

extended data:

polycarbonate (PC) resin is a thermoplastic engineering plastic with excellent performance. The properties of PC are high impact strength, stable size, colorless and transparent, good coloring, good electrical insulation, corrosion resistance and wear resistance, but poor moisture and smoothness, stress cracking tendency, easy hydrolysis at high temperature and poor compatibility with other resins. Due to its colorless, transparent and excellent impact resistance, carbonate (PC) has common daily applications such as optical discs, eye pieces, water bottles, bulletproof glass, goggles, bank bullet proof glass, headlights, animal cages, pet cages, etc. Carbonate (PC) is also used to make helmet masks for astronauts on the moon

five general-purpose plastics for civil use: polyethylene PE, polyvinyl chloride PVC, polypropylene PP, polystyrene PS, acrylonitrile butadiene styrene copolymer (ABS). ABS is mainly used in household appliances. PE and PP are used in bags, plastic pots, barrels and the like. PVC is used for wires and cables, downpipes, wire pipes, shower curtains, packaging materials and the like. PS is mainly some transparent packaging boxes, toy shells and so on

reference: Baidu Encyclopedia – PVC plastic & nbsp& nbsp; Baidu Encyclopedia – PC & nbsp; Baidu Encyclopedia – PS & nbsp& nbsp; Baidu Encyclopedia – plexiglass & nbsp; Baidu Encyclopedia – acrylic

1. PMMA: commonly known as acrylic and excellent transparency material, its surface hardness is slightly low and easy to scratch, It is suitable for making transparent insulating parts and parts with general strength

2. PS: colorless and transparent, second only to PMMA, suitable for making insulating transparent parts Decorative parts and chemical instruments Optical instruments and other parts

3. PC: colorless transparent material, suitable for making small instrument parts, insulating transparent parts and impact resistant parts

4. Abs: this kind of material is relatively expensive and has great prospects in decoration, packaging and other fields

extended data

plastic is a high molecular compound (), commonly known as plastics or resin, which is polymerized by addition polymerization or polycondensation reaction with monomer as raw material. It can freely change its composition and shape style. It is composed of synthetic resin, filler, plasticizer, stabilizer, lubricant, pigment and other additives

the main component of plastics is resin. The term resin was originally named after lipids secreted by animals and plants, such as rosin and shellac. Resin refers to high molecular compounds that have not been mixed with various additives. Resin accounts for about 40% ~ 100% of the total weight of plastic. The basic properties of plastics mainly depend on the nature of resin, but additives also play an important role. Some plastics are basical
ly composed of synthetic resin without or less additives, such as plexiglass, polystyrene and so on

the so-called plastic is actually a kind of synthetic resin. Its shape is similar to that of pine resin in natural resin. It is artificially synthesized by chemical means and is called plastic

references plastics (polymer)_ Baidu Encyclopedia & nbsp

PMMA: commonly known as acrylic, it is a material with excellent transparency. Its surface hardness is slightly low and it is easy to scratch, It is suitable for making transparent insulating parts and parts with general strength
PS: colorless and transparent, second only to PMMA, suitable for making insulating transparent parts Decorative parts and chemical instruments Optical instruments and other parts
PC: colorless transparent material, suitable for making small instrument parts, insulating transparent parts and impact resistant parts
Abs: this kind of material is relatively expensive and has great prospects in decoration, packaging and other fields.

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