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Choose PMMA /Acrylic or PC to make clear prototype?

- Jun 06, 2018 -

In your project, when components need to be transparent or transparent, will they be tangled in the PC or PMMA? Today, the model family gives you the following information about the differences and characteristics of these two materials.


The PC board is resistant to weak acids and is based on polycarbonate. It is made of CO-EXTRUSION technology. It shows that the PC board is resistant to neutral oil, does not tolerate strong acids, does not endure, does not resist alkali, and must be coated with UV. Caixing. But high temperature, high strength. Comprehensive performance is excellent.


    Let's talk about the transmittance of PC materials. The PC industry in the hand-held industry must achieve high light transmittance. There are two methods. One is always hand-polished, because PC material has high toughness, so this method will consume a lot of manpower. Material resources greatly increase the cost of the transparent PC board; another method is chemically brightening or UV coating. This method can reduce the cost but the transparency is not as good as manual polishing, and impurities and dust pits are prone to occur. But regardless of the general approach, the PC's light transmittance is hardly higher than 89%.


    Then talk about the strength of PC materials, impact strength is 250-300 times that of ordinary glass, 30 times the same thickness of acrylic plate, 2-20 times that of tempered glass, with 2 kg below the hammer 2 meters fall no cracks, there are "Non-broken glass" and "steel" reputation. PC material is also a particularly good choice for hand panels with high structural strength requirements.


PMMA sheet, commonly known as plexiglass. It is a thermoplastic with excellent light transmittance. It is based on methyl methacrylate as the main material, adding initiator, plasticizer and other polymerization. PMMA has excellent light transmission, can pass 99% of light, and can pass through 73.5% of ultraviolet ray; mechanical strength is high; heat resistance, cold resistance and weather resistance are all good; corrosion resistance and insulation Good; under certain conditions, dimensionally stable and easy to process. The disadvantage of PMMA is that its texture is relatively brittle, it is easily soluble in organic solvents, its surface hardness is not large, and it is easy to wiping. PMMA is mainly used for indoor high-grade decorative materials and special ceiling lamps or indoor partitions and transparent protective materials in buildings. PMMA has many kinds of colorless, colored transparent PMMA and pearlescent PMMA.

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    The biggest advantage of PMMA lies in its excellent light transmittance. Acrylic can reach a transparent rate of over 99% after being polished by a hand-grinding master; secondly, it has excellent weatherability, and has a strong adaptability to the natural environment. The long-term exposure to sunlight and wind and rain will not change the performance of the product. The anti-aging performance is good and it can be used safely in the outdoors. It is his good processing performance, which is suitable for both machining and thermoforming.


    So, PMMA has so many advantages. Is it better than PC? actually not. PMMA also has his deadly short board, which is known to all. His biggest shortcoming is that it is very brittle and its toughness is very poor! If the transparency of your project has the required time for snaps and other structural strengths, you should carefully consider whether you want to use a PC.

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The simple summary is: 

PC material has a transparent effect, good toughness, and high temperature resistance.

PMMA transparent effect, poor toughness, high temperature is not obvious


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