Characteristics & Usage of Polyester Fiber

We are 8 ton flat webbing sling with eyes supplier and 8 ton round sling manufacturer. Various 8 ton round lifting slings are offered at the most competitive factory direct price. Send an inquiry now to get a quote for your required lifting slings. Here we’d like to present you a brief introduction of characteristics and usage of polyester fiber. Polyester is used as a fiber for clothing, and its fabrics are wrinkle-free and iron-free after washing. Polyester is often blended or interwoven with various fibers, such as cotton-polyester, wool-polyester, etc., and is widely used in various lifting sings, clothing and decorative materials.

Polyester can be used in industry for webbing lifting sings, conveyor belts, tents, canvas, cables, fishing nets, etc. Especially the polyester cord used in tires is close to nylon in performance. Polyester can also be used in electrical insulation materials, acid-resistant filter cloth, medical industrial cloth, etc.

The scientific name of polyester is polyethylene terephthalate fiber. In 1953, the United States industrialized the production of this polyester fiber with the trade name Dacron. Among synthetic fibers, polyester is an ideal textile material.

(1) Characteristics and usage of polyester fiber

① Strength: The strength of polyester fiber is nearly 1 times higher than cotton and 3 times higher than wool, so polyester fabric is strong and durable.

② Heat resistance: It can be used at 70~170℃, and has the best heat resistance and thermal stability among synthetic fibers.

③ Elasticity: The elasticity of polyester is close to wool, its wrinkle resistance is better than other fibers, and its shape retention is good.

④ Wear resistance: The wear resistance of polyester is second only to nylon, ranking second among synthetic fibers.

⑤ Water absorption: Polyester has low water absorption and moisture regain and good insulation properties. However, due to low water absorption, large static electricity generated by friction causes poor dyeing performance.

(2) Production of polyester

The main raw materials for the production of polyester are terephthalic acid or terephthalate and ethylene glycol. The industrial process routes for producing ethylene terephthalate are mainly divided into two categories: transesterification method and direct esterification method. Continuous, semi-continuous and intermittent production can be adopted.

Transesterification polycondensation method: Transesterification method has mild reaction conditions, low requirements on raw materials and equipment, and the process is easy to operate and control. It is the earliest industrialized method and is still used today, but it has many production steps (including the production of terephthalic acid). dimethyl ester). The direct esterification method has fewer reaction procedures, less raw material consumption, and higher product quality. However, it has higher requirements for raw materials, equipment, and operation control. It is the main production method today.