What does plastic material include?
Method for identifying toxic plastic bags. Water detection method: put a plastic bag into the water, non-toxic can be surfaced, and poisonous won't rise; hand touch detection method: white or colorless transparent is non-toxic, the hand has a sense of lubrication, the surface like wax; color: color detection method of toxic haze or yellow, red and black. Feel sticky; jitter method: take a plastic bag shaking, the sound crisp sound stuffy astringent toxic and non-toxic.
Plastic bags are the main raw materials of polyethylene and polyvinyl chloride, are non degradable. The main raw material for the production of plastic bags and polystyrene, polypropylene polymer, waste plastic packaging into the environment, because of its difficult degradation, will cause deep ecological environment problems, the long time. Waste plastic packaging is mixed in the soil, affecting crops absorb nutrients and moisture, will lead to crop failures; abandoned waste plastic packaging on land or in the water, animal as food ingestion, will lead to the death of the animal.
The main raw material of plastics is oil and natural gas, that is, carbon hydrogen compounds. First, the appropriate large molecules in petroleum and natural gas are extracted, first split into monomers, and then polymerized into polymers to become plastic.
