Wuhan Modern Polyethylene Terephthalate (PET) Film

日期:2020/4/7 8:45:34 / 阅读: / 来源:本站

Wuhan Modern Polyethylene Terephthalate (PET) Film

Polyester is a general term for high molecular polymers combined by ester groups -OO. It is synthesized by dibasic acid and di-alcohol. It is a uniform saturated polyester with saturated dibasic acid and dihydric alcohol. It is a general polyester for film. It is a saturated polyester. The resin synthesized from the dibasic acid or anhydride and dibasic acid is unsaturated polyester, which is the raw material for manufacturing FRP. (S According to the difference between dibasic acid and diol, the saturated polyesters used in industry mainly include the following. 1) Polyterephthalic acid ethylene glycol ester (abbreviated as PET), composed of terephthalic acid and ethylene The diol is directly esterified and then polycondensed or formed by transesterification of terephthalic acid dimethanol and ethylene glycol. The latter method is mainly used in the industry. It is usually used to make polyester, so it is commonly known as polyester resin. The film made from it is referred to as PET film, which is the most used in polyester. Www.handern.com Breathable film equipment

2) Polybutylene terephthalate (PBT for short) is formed by polycondensation of 1,4-butanediol and dimethyl terephthalate (DMT) film transesterification or direct esterification. It is also one of engineering plastics. www.handern.com Breathable membrane equipment

3) If terephthalic acid is replaced by 2,6-forbided diacid, it is polycondensed by esterification with ethylene glycol to form poly 2,6 diacid glycol www.handern.com Breathable membrane equipment

Hydroxyphenyl) propane polyterephthalate, commonly known as polyarylate (PAR). For F, m 년 99 ester www.handern.com breathable membrane equipment

4) If the diol is a diol with an aromatic group, such as 2,2-bis (4 abbreviated as PEN) formed by polycondensation of bisphenol A and terephthalate. In addition to the nomenclature, the polyester is generally polyethylene terephthalate. Polycarbonate, a class of compounds containing carbonates in the sub-bonds, of which 2,2 bis (4 hydroxyphenyl) propane (commonly known as bisphenol A) type polycarbonate (referred to as PC) is an industrially produced aromatic Polycarbonate can be regarded as its diol is bisphenol A, and the dibasic acid is carbonic acid. The common characteristics of these several materials are high strength, good transparency and high heat resistance. As a packaging material, it is also used Chemical resistant carbonates are discussed in Section 3.5 of this book. As well as the nature, fragrance and moisture resistance of natural medicine packs, naturally, they each have their own characteristics and play their respective uses. It is estimated that 1 liquid crystal polymer is also a polyester compound. Due to space limitations, this book will not be introduced for the time being. The speed of T23.1.2 polyethylene terephthalate resin (PET) characteristics of the product to polyethylene terephthalate (hereinafter referred to as polyester or PET) is a milky white or pure yellow polymer, its density The melting point is 225-260 ° C. Has the following characteristics: period, や は (11.30-1.36gwww.handern.com breathable membrane equipment


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