Have you heard of PMMA? I believe that every friends are very strange to hear this name. What kind of material is it? And what are the characteristics? Next，Shirley will share some information about PMMA for your reference here.

一、 What is PMMA?

PMMA, also known as plexiglass, is by far the best quality in synthetic transparent materials. It is made of acetone, sodium cyanide, methanol, carbonic acid, etc., and is made into methyl methacrylate, and then polymerized, it can be divided into three configurations, atactic, stereoregular, and isotactic structure. These three configurations are divided according to different polymerization mechanisms.

PMMA has the characteristics of hard, non-fragile, highly transparent, weather resistant, chemically stable, easy to process, beautiful in appearance, easy to dye and form, and has become a widely used transparent plastic material.

二、The characteristics of PMMA

(1) The relative molecular mass is relatively high, up to about 100,000;

(2) Less impurities and high transparency；

(3) The bulk polymerization reaction is carried out simultaneously with the molding;

(4) More transparent than inorganic glass;

(5) The toughness is greatly improved compared with inorganic glass, and it is not easy to be embrittled;

(6) It is easier to form than inorganic glass, and it can easily form more complicated products.

三、Why choose PMMA instead of tempered glass and PET ?

PMMA (Plexiglas) has good cutting properties. It can be processed by laser cutting under good conditions. It is simple and of high quality. This feature is not available for tempered glass. Therefore, PMMA can withstand high temperature and low temperature environments. Consumers don't have to worry about the temperature during the production process.

The tempered glass can no longer be cut or processed. It can only be processed into the desired shape before tempering and then tempered.

The protector of PET material has high light transmittance, and there is no residual glue after tearing off, and it is not easy to appear small bubbles in the middle of the screen protector. However, the high degree of glare of such a screen protector causes the user to be unable to see the words on the screen, and at the same time, it is easy to leave fingerprints and the like on the surface.

Now, had we knows why PMMA is chosen instead of tempered glass and PET?