​What are the main components of high-strength industrial polyester yarn?

High-strength polyester yarn is a fiber-forming polymer made from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification or transesterification and polycondensation reaction. Material - polyethylene terephthalate (PET), fiber made by spinning and post-processing.

Polyester industrial yarn refers to high-strength, coarse-denier polyester industrial filament with a fineness of not less than 550 dtex. According to its performance, it can be divided into high strength and low elongation type (ordinary standard type), high modulus and low shrinkage type, high strength and low shrinkage type, and reactive type. Among them, high-modulus and low-shrinkage polyester industrial yarn has excellent properties such as high breaking strength, high elastic modulus, low elongation, and good impact resistance. It has a tendency to gradually replace ordinary standard polyester industrial yarn in tires and mechanical rubber products. ; High-strength and low-elongation polyester industrial yarn has the characteristics of high strength, low elongation, high modulus, and high dry heat shrinkage. It is currently mainly used as tire cords and conveyor belts, canvas warps, and vehicle belts and conveyor belts; high-strength Because low-shrinkage polyester industrial yarn shrinks little after being heated, the fabric or woven rubber products have good dimensional stability and heat-resistant stability, can absorb impact loads, and have the soft characteristics of nylon, and are mainly used for coated fabrics (Advertising light box cloth, etc.), conveyor belt weft, etc.; Reactive polyester industrial yarn is a new type of industrial yarn that has good affinity with rubber and PVC, which can simplify subsequent processing and greatly improve the quality of the product.