The main difference between acrylic material and backstay - Acrylic factory
Nowadays, the domestic acrylic market offers two types of plates: the PMMA board, which is produced using acrylic new materials and the use of acrylic backstakes, literally we can recognize that the acrylic material is what we call the recycled acrylic scrap After processing (after thermal degradation), MMA (methyl methacrylate) monomer is regenerated and made by chemical polymerization. Many acrylic sheet manufacturers in order to pursue profits, poor production technology, to produce the degradation of monomer, the purity is not high, made of sheet metal, the quality of low quality, the same price relative to the new material to be cheaper.
So how do we identify the acrylic sheet from the new material or back to the production of it? What is the difference between the new material and the return plate? In fact, the resolution of acrylic sheet is a new material, is not difficult, as long as we follow a look, two touch, three smell the principle, basically can be determined.
First, we look at the appearance of the acrylic sheet
A look: back to the appearance of yellowing plate, from the cross-section is particularly evident;
Two touch: the surface easy to scratch
Three smell: back to the board when the stimulating taste strong, cut to produce a stimulating smell, burning smell, bubbles, black smoke
Second, from the product characteristics to distinguish
The use of MMA new material produced by the performance of the plate:
1. Thickness is stable about 0.1mm to 0.2mm or so, and the plate bubbles are small
2. The thickness is almost the same (but the tolerance range), the surface crystal clear
3. Excellent anti-ultraviolet performance, normal natural conditions, the outdoor 3 years unchanged yellow, do not fade, loss of light, no cracking
4. Transparency is greater than 90%, cross section transparent and colorless
5. Surface hardness, and aluminum and brass quite
6. Anti-cracking and anti-chemical performance
7. High quality protective film, providing adequate protection
But with MMA back to the production of sheet metal, there will be a variety of defects, the specific performance in:
1. UV resistance is very poor, up to six months will be yellowing, the sun is prone to cracks under the light
2. Thickness is unstable, some differences in the maximum 0.5mm, some bubbles, unstable
3. Section at the yellow hair, although the brightener treatment of the return plate, the initial yellowing to reduce, but after the short-term use of yellowing
4. Surface hardness is low, easy to scratch
Easy to crack
6. The poor quality of the protective film, easy aging deterioration
