What are the properties of polycarbonate, polypropylene, PVC, ABS, nylon and bakelite?

PET (polyethylene terephthalate) is made of this material for general mineral water, carbonated drinks and functional drink bottles. It is resistant to heat at 70℃ and easy to deform, which may release harmful substances after repeated use for a long time. Try not to store mineral water in the open air or in the car for a long time in hot weather, and don't flush boiling water directly into mineral water bottles. HDPE (High Density Polyethylene) is a common white medicine bottle, cleaning products and bath products, so don't recycle it. PVC (polyvinyl chloride) common raincoats, building materials, plastic films, plastic boxes, etc. Good plasticity and low price. It can only resist heat of 8 1℃, and it is easy to produce harmful substances at high temperature, so it is rarely used in food packaging. LDPE (Low Density Polyethylene) is commonly used in plastic wrap and plastic film at present, but its heat resistance is not strong. I suggest you take off the wrapped plastic wrap before heating the food in the microwave oven. PP (polypropylene) microwave lunch box is made of this material, which can withstand the high temperature of 130℃ and has poor transparency. It is a plastic box, which can be put into the microwave oven and reused after careful cleaning. Some lunch boxes are made of No.5 PP, but the lid is No.6 PS polystyrene. PS has good transparency, but it is not resistant to high temperature, so it can't be put into the microwave oven with the box.