The difference between plastic material of PET and PBT

PET and PBT are thermoplastic polyester, molecular chain structure similar to that of most of the nature is the same, but difference is very big as engineering plastics applications. Here take a look at the difference between the two. PET: polyethylene terephthalate oxalic ester PBT: polyethylene terephthalate succinic ester PET, the molecular structure of highly symmetrical, have certain ability of crystallization orientation, thus has higher into membranous. PET has good optical performance and weatherability, amorphous PET with good optical transparency. Another PET has excellent abrasion resistance grinding and dimensional stability and electrical insulation. PET bottle made of high strength, good transparency, non-toxic, prevent infiltration, light quality, high efficiency and is widely used. PET is mainly used in: 1, can be spun polyester fiber, polyester namely; 2, can be made into film substrate for recording, video, film, etc, insulation film, product packaging, etc. ; 3, as the plastic blow can make all kinds of bottle, such as cola bottles, water bottles, etc. 4, can be used as electrical parts, bearings, gears, etc. PBT and PET molecular chain structure similar to that of most of the nature is the same, just the main chain of the molecule made up of two methylene turned into four, so molecules more smooth, more excellent machining performance. In short, the PET is mainly used for fiber, cosmetic bottle, film, sheet, resistant to bake food containers, such as PBT, mainly used in electronic appliances, connectors, switch parts, household appliances, spare parts, small electric lid or ( Heat resistance, flame retardancy, electric insulation, molding processability) ; PET high temperature resistant no PBT high, PBT, raw material basic are adding glass fiber to enhance rigidity is better than PET. Polyethylene acetate PET modified plastics has excellent heat resistance, weather resistance, electronic, rigidity and intensity, modification and alloying modification to its reinforced, flame retardant, can significantly improve its heat resistance, modulus, toughness, dimensional stability and flame retardancy, widely used in electronic appliances, automobile and home appliances and other fields. MORE + recommended product bottle PET health products bottle PET health products bottle PET health products bottle PET care bottle PET health products bottle PET health products bottle PET health products square bottle PET health products plastic PET health products bottle PET health products bottle PET health products bottle PET health products' Bowling bottle 】 PET health products bottles [ New arrival] Pet health products bottles 【 Preview 】 Acrylic health food bottle PS supplement bottle PS health food bottles of special tear cover cover