How to identify degradable plastic 150

I watched a feature some time ago about the plastic bags we use now. Shake the plastic bag with your hand, the sound is very crisp, the plastic bag with texture and hardness is made of good raw materials. And those soft and transparent plastic bags that are usually used to buy vegetables are mostly made of raw materials synthesized after garbage, which is very dirty, and after reading the report, there is a feeling of disgust.

For example, the bottom of the plastic container is marked with PE, PP, PS, PVC, PET, NY, PC, PF, UF corresponding to the number of 1 2 3 ......I remember the teacher said that after the 03rd, it is a safe and environmentally friendly plastic that is degradable.

1 Generally speaking, after the plastic is ignited, it burns and there is a flame but does not smoke, that is, it belongs to the poly(B, C) rarefaction. 2 If there is a flame after ignition and it is accompanied by black smoke, it belongs to the polystyrene thin group.

3. After ignition or below, it will burn, and if it is taken away, it will be extinguished, which belongs to the ordinary plastic of poly and rare, or with flame retardant materials, and the taste of sulfuric acid after the polyethylene is extinguished.

The first type of plastic is much less harmful to the environment and human beings than the second and third types of plastic.

With the continuous expansion of the field of degradable plastic products, the quality requirements for degradable plastic products are getting higher and higher. Simply filling degradable plastic products with inorganic powder is not suitable for the current situation of degradable plastic development. More and more degradable plastic manufacturers and different degradable plastic products are required to maintain basic transparency and gloss.

Degradable plastic generally has a mark, it has its standard, it doesn't feel very slippery, it clumps together, it's a bit like paper clumps together.

For plastics, it's definitely better to have a flame.

Burn it, poison burn it and it emit black smoke, non-toxic it emits white smoke.

Burn it directly on the fire.

Plastic degradation is a chemical change.

Degradable plastics refer to a class of plastics whose properties can meet the requirements of use, the performance does not change during the shelf life, and can be degraded into environmentally harmless substances under natural environmental conditions after use. Therefore, it is also known as environmentally degradable plastic.

There are a variety of new plastics: photodegradable plastics, biodegradable plastics, photooxidation biodegradable plastic pure materials, carbon dioxide-based biodegradable plastics.

Thermoplastic starch resin degrades plastics.

Brief introduction. There is a direct relationship between the aging and degradation of polymers and the stability of polymers. The aging and degradation of polymers shorten the service life of plastics.

To this end, since the advent of plastics, scientists have been committed to the anti-aging of such materials, that is, the research of stabilization, in order to produce highly stable polymer materials, and scientists from various countries are also using the aging and degradation behavior of polymers to compete to develop environmentally degradable plastics.

The main application areas of degradable plastics are: agricultural mulch film, various plastic packaging bags, garbage bags, shopping bags in shopping malls and disposable tableware.

Because plastic is a chemical petroleum product extracted from oil or coal, it is difficult to degrade naturally once produced, and plastic will not decay and degrade for 200 years underground, and a large amount of plastic waste is buried in the ground, which will destroy the permeability of the soil and make the soil compact.

Degradable plastics refer to a class of plastics whose properties can meet the requirements of use, have unchanged properties during the shelf life, and can be degraded into environmentally harmless substances under natural environmental conditions after use. Therefore, it is also known as environmentally degradable plastic. A variety of new plastics are available

Photodegradable plastics, biodegradable plastics, photooxidation bio-fully buried sedan car-degradable plastics, carbon dioxide-based bio-degradable plastics, thermoplastic starch resin degradable plastics.