Acrylic is often used to make optical instruments

Posted by mi le on July 9th, 2019

Plexiglass, also known as acrylic, is an important thermoplastic developed earlier. It has excellent light transmission properties, so that we now have new glass. What is the difference between plexiglass and ordinary glass?

1. High transparency: Plexiglass is a high-quality polymer transparent material with a light transmittance of 92%, which is higher than that of glass. The difference between plexiglass and ordinary glass, the lamp of the solar lamp called artificial sun is made of quartz, because quartz can completely transmit ultraviolet rays. Ordinary glass can only pass 0.6% of ultraviolet light, but plexiglass can pass 73%.

2, light weight: the density of plexiglass is 1.18kg / dm3, the same size of the material, its weight is only half of ordinary glass, metal aluminum (belongs to light metal) 43%.

3. High mechanical strength: The relative molecular mass of plexiglass is about 2 million. It is a long-chain polymer compound, and the molecular chain is very soft. Therefore, the strength of plexiglass is relatively high, and it is resistant to stretching and impact. It is 7 to 18 times higher than ordinary glass. The difference between plexiglass and ordinary glass is that there is a heated and stretched plexiglass in which the molecular segments are arranged in a very order, which makes the toughness of the material significantly improved. Nail is nailed into the plexiglass, and even if the nail penetrates, no crack occurs on the plexiglass. The difference between plexiglass and ordinary glass, this plexiglass will not break into pieces after being broken by bullets. Therefore, the stretched plexiglass can be used as a bulletproof glass and also as a canopy on a military aircraft.

4, easy to process: plexiglass can not only use the lathe for cutting, drilling machine for drilling, and can be bonded to various shapes of equipment with acetone, chloroform, etc., can also be blow molding, injection, extrusion and other plastic molding methods Processed into large aircraft cockpit covers, small to dentures and trays

5, the difference in performance: ordinary glass thickness of more than 15 cm? Will become a green piece? And can not see things through the glass. The plexiglass can be clearly seen across the 1 meter thick. Because it has a very good light transmission performance, and UV can also penetrate, it is commonly used to manufacture optical instruments.

If you want to know more about organic comparison applications, you can click here: Acrylic fish tank.