Take you to know the difference between PP high-strength yarn and polyester silk!

Main physical and chemical properties of PP high-strength yarn

1. Form

The vertical surface of the polypropylene is flat and lubricated, and the cross-section is circular.

2. Density

The advantage of polypropylene is that it is light in texture, and its density is only 0.91g/cm3, which is the lighter type of common chemical fibers, so the same weight of polypropylene has a higher cover area than other fibers.

3, strong elongation

Polypropylene has high strength, large elongation, high initial modulus and excellent elasticity. So polypropylene wear resistance is good. In addition, the wet strength of polypropylene is fundamentally equal to the dry strength, so it is the ideal data for the manufacture of fishing nets and cables.

4. Hygroscopicity and dyeability

The hygroscopicity of polypropylene is very small, simply not hygroscopicity, and the moisture regain rate under a single atmospheric condition is close to zero. However, it has a core suction effect, which can transfer water vapor through the capillary tubes in the fabric, but it does not have any absorption effect on itself. The dyeing property of polypropylene is poor and the chromatography is incomplete, but the method of stock solution coloring can be used to compensate for the lack of.

5, acid and alkali resistance

Polypropylene has good chemical resistance, in addition to concentrated nitric acid, concentrated caustic soda, polypropylene has good resistance to acid and alkali, so it is suitable for filtration and packaging information.

6, light resistance, etc

Polypropylene light resistance is poor, thermal stability is poor, easy to age, not resistant to ironing. However, it can participate in the defense during spinning

What is polyester filament and its properties

Polyester is a single important type of synthetic fiber, and is the commodity title of polyester fiber in China. It is based on refined terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials through esterification or ester exchange and condensation reaction to prepare the forming polymer - polyethylene terephthalate (PET), spun and disposed of fibers.

Polyester filament has the following properties

1, high strength, short fiber strength is 2.6 ~ 5.7cN/dtex, high strength fiber is 5.6 ~ 8.0cN/dtex. Due to its low hygroscopic properties, its wet strength is fundamentally the same as its dry strength. The impact strength is 4 times higher than polyamide and 20 times higher than viscose fiber.

2, the elasticity is good, the elasticity is close to wool, when the elongation of 5% to 6%, it can be completely restored. Crease resistance exceeds other fibers, that is, the fabric does not wrinkle and has good dimensional stability. The elastic modulus is 22 ~ 141cN/dtex, which is 2 ~ 3 times higher than polyamide fiber.

3, good heat resistance

4, good water absorption

Through the above introduction, can you tell the difference between polyester silk and PP high-strength yarn?

Shanghai Jinci Industrial Co., Ltd, founded in March 2006, is a large entity company specializing in the production and sales of polypropylene fiber (PP yarn). The company's products include polypropylene general filament, PP high-strength yarn, polypropylene light body filament, polypropylene twist filament, polypropylene hollow filament, polypropylene fluorescent filament, polypropylene luminous filament, polypropylene flame retardant filament, polypropylene air variable filament, etc.