Bottles of beverages such as sprite, mineral water, juice, etc., which are common in life, are usually made of
PET plastic . PET is polyethylene terephthalate (Polyethlene terephthalate), cheap and easily available in petrochemical terephthalic acid (TPA) and ethylene glycol (EG) as starting material, obtained by polymerization under high temperature vacuum conditions, the reaction As shown below.
PET is light in weight and high in transparency. In addition to being used to make soft drink bottles, it is also widely used in the production of high-strength fibers, films, and films. However, PET has the disadvantage of being deformed by heating to 70 °C. A more important disadvantage is that it is prone to multiple degradation reactions due to the presence of ester bonds in the molecule. For example, a hydrolysis reaction occurs under acid or alkali conditions, and it can also react with an alcohol to release a substance harmful to the human body. Therefore, it is only suitable for iced or warm drinks, and is not suitable for holding a liquid such as alcohol. In addition, the PET product releases the carcinogen di(2-ethylhexyl) phthalate (DEHP) after 10 months of use. The harmful substances degraded by PET bring great problems to human beings. Obviously, the degradation treatment of discarded PET products is a very important research content.
The Fiberglass Window Screen is chiefly used in the home for insect preventing purpose as Windows Screen, door screen, retractable window swing window and door screen, sliding window, patio screen, porch screen, garage door screen, mosquito screen, etc. But you can also find it creatively used in pastures, orchards and gardens and construction.
Fiberglass Wire Mesh is well ventilate for sun shade and easy washing, anticorrosive, resistance to burn, stable shape, long service life and feels straight. The popular colors of grey and black made vision more comfortable and natural. Fiberglass screening has graceful and generous appearance.
Fiberglass Window Screen
Fiberglass Wire Mesh,Fiberglass Insect Screen,White Fiberglass Window Insect Screen,Insect Screen,Anti Insect Net,Windows Screen,Printing Screen
Hebei TongChan Imp.&Exp.Co., Ltd. , https://www.tongchanmesh.com