Hemp-like polyester: what is polyester? And the superiority of polyester-cotton blends - slub silk, lelis
Hemp-like polyester polyester is an important variety of synthetic fibers, and is the trade name of polyester fibers in my country. It is a fiber-forming polymer-polyterephthalate made from pure terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (MEG) through esterification or transesterification and polycondensation. Ethylene formate (PET), is a fiber made by spinning and post-processing. Bamboo silk
From the point of view of the molecular composition of hemp-like polyester polyester, it is composed of short aliphatic hydrocarbon chains, ester groups, benzene rings and alcohol terminal hydroxyl groups. In addition to the presence of two hydroxyl groups terminated by alcohol, polyester has no other polar groups, so the hydrophilicity of polyester fibers is extremely poor. The polyester molecule contains about 46% ester groups. When the temperature is higher than 200°C, the ester group will be hydrolyzed and thermally cracked, and will be saponified in the case of strong alkali, which will reduce the degree of polymerization. The normal dosage of detergent and washing powder below 100 ℃ has no effect on polyester. Bamboo silk effect.
Properties of polyester
Slub yarn has high strength, good elasticity, heat resistance, heat insulation, abrasion resistance and corrosion resistance relatively good, but poor dyeing and hygroscopicity. But the color fastness is good and the color is not easy to fade. Because there is no specific dyeing group on the polyester molecular chain, the polarity is small, the dyeing is difficult, and the dyeability is poor, and the dye molecules are not easy to enter the fiber. It is sultry when worn and easily carried away by static electricity and dust. Beautiful and comfortable. However, it dries very easily after washing with little decrease in wet strength, does not deform and has good washing and abrasion properties.
There are many types of polyester fabrics. In addition to weaving pure polyester fabrics, there are many products blended or interwoven with various textile fibers, which make up for the shortcomings of pure polyester fabrics and exert good performance. Polyester fabrics are moving towards the naturalisation of synthetic fibres such as wool, silk, linen and deerskin.
Shaoxing Sigma Chemical Fiber Co., Ltd. is a manufacturer of imitation hemp polyester, slub yarn and lelis. If you have any needs, please contact us.