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Classification And Properties Of Polyester Fiber

2010/7/14 11:37:00 48

Polyester is "

Polyester

"(POLYESTER FIBRE) the name of the commodity in China.

Nowadays, the so-called "polyester fiber" refers to the fiber with the content of two terephthalate above 85%, and its molecular structure contains an ester group, so it is called polyester fiber.

Polyester has excellent properties, high breaking strength and modulus of elasticity, excellent heat setting, good resilience, heat resistance and light fastness. Its fabric is washable and durable. It is an ideal fiber.

Polyester fiber

The industrial production began in 1953. It is a kind of fiber developed late in the large variety of synthetic fibers.

However, the rapid development of petrochemical industry has provided more abundant and cheap raw materials for polyester production, making polyester the fastest and highest output of synthetic fiber.

At present, the main production countries of polyester are the United States, Japan, the United Kingdom, France, Germany, Italy, CIS countries, China and so on.

Classification and specifications

1. Specifications of polyester staple fiber: 1.2D * 38mm, 1.3D * 38mm, 1.4D * 38mm, 1.5D * 38mm, 2.5D * 38mm, 3D * x, * * x, X * x, X * *, etc.

Cotton type fiber (length: 38mm) and medium length fiber (length: 51 - 76mm) should have good uniformity, length deviation should not exceed 6%, and super long fiber content is not greater than 2%.

2, polyester bar specifications: 3D x 76 - 102mm, 3D x 76 - 89 - 102mm, 3D x 70 - 100mm, 3D * 89mm, etc.

3, polyester filament specifications: 50D/18F, 70D/24F, 75D/36F, 50D/24F, 30D/8F, 45D/18F, 68D/24F, 5D/22F, 100D/22F and so on.

4, polyester filament specification: 150D/30F, 150D/32F, 75D/36F, 100D/30F and so on.

5, polyester monofilament specifications: diameter 0.17mm, 0.18mm, 0.20mm, 0.23mm, 1.20MM and so on.

6, from the perspective of gloss, divided into three categories: matte, semifluid and glossy.

Properties and uses

Polyester has the advantages of high breaking strength and initial modulus, good heat setting and resilience, light resistance and weather resistance. It is superior to other synthetic fibers only after acrylic fiber.

Polyester fabric has some unique advantages, such as more durable, good shape retention, stable size, durable pleat, easy washing, quick drying, not easy to wrinkle, and no mold.

However, because of the high crystallinity of polyester fibers, dyeing is difficult. Because of its large friction coefficient, it is easy to generate static electricity, and fabrics are easily sticky and dirty.

In addition, polyester acid and alkali resistant, can be dissolved with 10% sodium hydroxide.

Polyester is easy to spin filaments and easy to spin staple fibers.

Polyester staple fiber can be spun or blended with other natural fibers and chemical fibers to make woven fabrics and knitted fabrics with various wearable properties.

Polyester thick cloth can make hats, carpets and filter cloth; filament can be woven into gauze blouse, curtain, curtain, account, lace and gloves, etc. it is widely used in knitting and weaving; filament textured yarn can be used to make garments, shirts and other textiles; polyester is used as sewing thread and shoe line.

In addition, polyester monofilament can be woven into a filter screen for paper making.

Imported dacron is a product of statutory inspection. The imported dacron is not inspected by the inspection and quarantine department, and is not allowed to be sold and used.

The main inspection basis for imported polyester fiber is the trade contract, based on the quality specifications and amplitude stipulated in the contract.

According to SN/T0612 - 1996 "inspection rules for imported polyester and nylon yarn"; SN/T0060 92 "inspection rules for imported polyester, acrylic and nylon staple fiber"; SN/T0017 - 96 "determination method of fiber length for import and export of chemical fiber strips and wool strips"; SN/T0461-95 "inspection rules for imported chemical fiber regulations"; SN/T0472-95 "determination method of defects in imported polyester staple fiber"; SN/T0469-95 "determination method of oil content of imported polyester processing yarn"; SN/T0470-95 "measuring method for boiling water shrinkage of imported polyester yarn"; SN/T0467-95 "measuring method for crimp characteristics of imported polyester filament"; SN/T0471-95 "testing method for dyeing uniformity of imported polyester yarn".