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What is the difference between optical grade PC and PMMA materials?
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What is the difference between optical grade PC and PMMA materials?

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[Abstract]:
MainlyfromthefollowingaspectsofthePCandPMMAmateriallensanalysis:1.Physicalproperties:PChasbettertoughnessandimpactstrengththanPMMA,andPMMAisbrittlematerial. 2,temperatureresistance:PCisbetterthanPMMAt
Mainly from the following aspects of the PC and PMMA material lens analysis:
1. Physical properties: PC has better toughness and impact strength than PMMA, and PMMA is brittle material.
 
2, temperature resistance: PC is better than PMMA temperature resistance, PC TG reaches 120 °, PMMA only 85 °.
 
3. Abrasion resistance: PC has better wear resistance than PMMA, but the surface scratch resistance is much lower than PMMA. Therefore, scratch-resistant high-gloss ABS material is added to PMMA for alloy modification.
4, the degree of fire: PC is better than PMMA fire resistance, that is, good flame retardancy, ordinary PC can go to shoot V2.
 
5. Transmittance: The transmittance of PMMA is much better than that of PC. The transmittance of PMMA is 92 ~ 93%, so it is the best transparent material inside, so often use multiple light guides and medical equipment. , PC is only 86 ~ 89%.
 
6. Weather resistance: PMMA has excellent weather resistance and is often used as an outdoor product. PCS is used as an outdoor product and can be added with an ultraviolet agent and an antioxidant.
The Yuying Fresnel lens is mainly made of PC and PMMA. Focus on the production and development of Fresnel lenses. Fresnel lenses for different purposes for thousands of customers around the world (Siemens, Midea, Panasonic, Hikvision, etc.).
1. PC plastic: PC plastic raw material commonly known as polycarbonate, polycarbonate English name is polycarbonate, referred to as PC, it is a kind of molecular chain, polymer compound containing carbonate structure, and its production is generally The duration of the material. According to the molecular structure of the ester group, it can be divided into several main categories such as aliphatic, alicyclic, aromatic and aliphatic aromatic. Bisphenol A polycarbonate is the most important, and the molecular weight is usually 3.1 million. Unless otherwise specified, what is commonly referred to as polycarbonate is bisphenol A polycarbonate and its modified varieties. Due to its excellent mechanical properties, it is commonly known as bulletproof rubber.
2, PC plastic applications: glass assembly industry, automotive industry and electronics, electrical industry, followed by industrial machinery parts, optical discs, packaging, computers and other office equipment, health care, film, leisure and protective equipment.
3, PMMA plastic: Polymethyl methacrylate (polymethyl methacrylate, also known as acrylic or plexiglass), more commonly known as Agali in Hong Kong, with high transparency, low price, easy processing, etc. A variety of glass substitute materials are commonly used. The polymethyl methacrylate monomer is methyl methacrylate (MMA, acrylic monomer). Excellent transparency, excellent aging resistance; its proportion is less than half of that of ordinary glass, but its ability to resist chipping is several times higher. It has good insulation and mechanical strength, and is resistant to acids, alkalis and salts. Corrosive, easy to process, can be bonded, sawing, plane, drilling, engraving, grinding, silk screen, sandblasting and other manual machining,
after heating, the pressure die can be bent into various acrylic products.
4, PMMA plastic applications: automotive industry (signal equipment, instrument panels, etc.), pharmaceutical industry (blood storage containers, etc.), industrial applications (lighting industrial lenses, Dvd, light scattering, projectors, etc.), electronic product keys (especially transparent) . Consumer goods (beverage cups, stationery, etc.).