Acrylic light guide plates are also good or bad. At present, there is a kind of low-priced and low-quality acrylic sheet-recycled acrylic sheet. This type of board is made of recycled acrylic scrap, which is thermally degraded to obtain recycled MMA (methyl methacrylate) monomer, which is then obtained by chemical polymerization. Because there is no scientific recycling plan and strict process, the purity of the degraded monomer produced is not high, and the quality of the board is often not flattered.
Characteristic:
Pure new material acrylic sheet:
- The light transmittance is greater than 92%, and the section is transparent and colorless
- Excellent UV resistance, no fading, loss of gloss, yellowing, and cracking outdoors for 5-8 years
- High surface hardness, equivalent to aluminum and brass
- Excellent resistance to cracking and chemicals
- High-quality protective film, providing sufficient protection
Recycled material acrylic sheet:
- The light transmittance is less than 86%, and the cross-section is yellow
- The anti-ultraviolet performance is very poor, it will turn yellow at most half a year, and cracks are prone to appear under sunlight
- Low surface hardness, easy to scratch
- Easy to crack
- The quality of the protective film is inferior, and it is prone to aging and deterioration.
Identification：
Recycle materials acrylic sheet:
- The appearance of the recycled board is yellowish.
- The surface is easy to scratch, and cutting produces an irritating smell.
- When thermoforming is heated, it is prone to bubble deformation.
- Sensitive to paint and ink, and prone to silver streaks or cracks.
- When burning, it blisters and emits black smoke with a pungent odor.
Pure new material acrylic sheet:
- The appearance of the recycled sheet is pure in color, which is particularly obvious from the cross-section.
- Excellent surface hardness and scratch resistance, cutting is non-irritating and odorless.
- When thermoforming is heated, it is not easy to generate bubbles and deformation.
- Stable adaptability to paint and ink.
- When burning, no bubbles, no black smoke, and no irritating smell.
