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What Is The PBT Bandage
Jan 15, 2018

Polybutylene terephthalate, English polybutylece terephthalate (PBT), which belongs to the polyester series, is composed of 1.4- butanediol (1.4-Butylene glycol) and terephthalic acid (PTA) or terephthalate (DMT) poly condensation, and mixing process into the milky white translucent to opaque, crystalline thermoplastic polyester resin through. Together with PET, it is called thermoplastic polyester, or saturated polyester! PBT was first developed by German scientist P.Schlack in 1942. After that, the US Celanese company (now Ticona) was developed by industry and listed on Celanex commodity name. In 1970, it was put on the market with 30% fiberglass reinforced plastics, the trade name is X-917, then changed to CELANEX. In 1971 Eastman launched a glass fiber reinforced and non reinforced products chain, the brand name Tenite (PTMT); the same year, GE company also developed similar products, there is no enhancement, enhancement and self extinguishing properties of three varieties. Then the world famous manufacturers in Germany, BASF Bayer, GE, Ticona, Japan Toray, MITSUBISHI chemical, Taiwan Xinguang synthetic resin, synthetic fiber, Changchun South Asia plastics company has put into production ranks of global manufacturers a total of more than thirty.

Physicochemical properties of PBT

PBT is milk white translucent to opaque, crystalline thermoplastic polyester. It has high heat resistance, toughness, fatigue resistance, self lubrication, low friction coefficient, weatherability and low water absorption. It is only 0.1%. It maintains all kinds of physical properties (including electrical properties) and electrical insulation in wet environment, but its volume resistance and dielectric loss are large. Hot water, alkali, acid, oil, but easy to be eroded by halogenated hydrocarbon, poor hydrolysis resistance, rapid crystallization at low temperature and good formability. The shortcoming is that the impact strength of the notch is low and the shrinkage rate is large. Therefore, most of the glass fiber reinforced or inorganic filler modified, the tensile strength, bending strength can be increased more than one times, the thermal deformation temperature is also greatly improved. It can work at 140 C for a long time. The longitudinal and transverse shrinkage of the glass fiber reinforced products is not consistent, which makes the products warped easily!


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