What kind of recycled plastic can be considered a good material? First look at the difference between recycled plastic and new materials?
First, from the appearance point of view:
Recycled plastic gloss is poor, the surface of the particles bleak, uneven size, containing impurities, generally with a color or gray;
New material gloss is very good, smooth surface particles, uniform size, without magazines, mostly colorless or milky white. The new material color bright, old material color dim.
For the plastic film, it will look at the sun, usually renewable is a star point, the new material is basically no star point. (Because the color of recycled materials is not the same, feel different, and there are many impurities, color is not good, the character is relatively small.
PE / PP crushing materials or granulation test requirements
How to identify is good material or not? What kind of material is good material? A more detailed distinction can be made from the following seven aspects:
1. Color: all through the permeability is better than through, no matter what color.
2. Gloss: shiny good than no shiny is better, that is, the color of the surface.
From the physical and mechanical properties point of view: recycled materials made of waste products, after the wind and sun, the plastic surface has been aging degradation. And after several high temperature processing melt plasticization, in the light, oxygen and high temperature under the action of part of the polymer is oxidized, macromolecular chain degradation, the physical and mechanical properties have declined, the more the number of renewable performance worse.
3. Drawing: (packing more than the drawing is certainly not good, but also can not increase the wire)
After the fire, with iron objects quickly contact the melt, and then quickly opened to see if the formation of silk is not uniform. If it is uniform is good material, Dora several times, the wire will overlap, once again opened to see if it is elastic, can not be opened again and again, did not break or open a distance after the break is good material.
4. Ignite: (whether the flame color is smoke, whether from the fire burning or simply no combustion);
5. smell smell: (all kinds of plastic taste are not the same, including flame retardants, etc.);
6. The above can not be confirmed, please again with the fire, in the process of burning quickly black smoke or melt quickly drops, not a good material.
7. Floating: as long as there is the poor water, if the above is not sure, or undecided, then only try
With renewable materials for your reference:
