What is polypropylene yarn

Polypropylene fiber is the product name of polypropylene fiber, which is made from propylene as the raw material by polymerization and melt spinning.

The production of polypropylene includes staple fiber, filament and split film fiber. The polypropylene film is made of polypropylene, which is then stretched to split into a network of the original fiber.

The main physical and chemical properties of polypropylene yarn

1. The longitudinal plane of the form polypropylene yarn is smooth and the section is round.

2. Density polypropylene yarn's biggest advantage is lightweight, its density of 0.91 g/cm3 is a common chemical fiber density the lightest varieties, so the same weight of polypropylene higher coverage than other fibers.

3. Strong elongated polypropylene yarn is of high strength, elongation, high initial modulus and excellent elasticity. So polypropylene wear well.

4. Hygroscopic and staining polypropylene is very low in moisture absorption and almost no moisture absorption. The moisture regain in general atmospheric conditions is close to zero. The chromaticity of polypropylene is poor, the chromatogram is not full, but can use the method that the liquid colorization is used to make up the deficiency.

5. Acid-resistant and alkaline polypropylene has good chemical resistance. Besides concentrated nitric acid and strong caustic soda, polypropylene is good for acid and alkali resistance, so it is suitable for filtering materials and packaging materials.

6. Resistance to light resistance is poor, thermal stability is poor, easy to age, and ironing. But the anti-aging properties can be improved by adding anti-aging agent to the spinning.

What is dacron?

Dacron is an important variety of synthetic fiber and is the name of the Chinese polyester fiber. It is pure terephthalic acid (PTA) and dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw material through esterification and ester exchange and polycondensation reaction of fiber forming polymer, polyethylene terephthalate (PET), the spinning and aftertreatment fibers.

What are the properties of dacron?

1. High strength. Short fiber strength is 2.6 ~ 5.7 cN/dtex, high strength fiber is 5.6 ~ 8.0 cN/dtex. The impact strength is four times higher than nylon and 20 times higher than viscose fiber.

2. Resilient. The elastic approach to wool is almost completely restored when it is 5 to 6 percent elongated. Wrinkling resistance is more than other fiber, that is, the fabric is not creased, the dimensional stability is good.

3. Good heat resistance.

4. Good water absorption.

5. Good wear resistance. Wear resistance second only to the best nylon, better than other natural fibers and synthetic fibers.

6. Good light resistance. Light resistance is second only to acrylic. 7. Corrosion resistance. Bleaching agent, oxidizer, hydrocarbon, ketone, petroleum products and inorganic acid. The alkali is not afraid of mold, but it can be decomposed.

8. Poor dyeing.

What are the main types of dacron?

The types of dacron are short fibers, stretch yarn, textured yarn, decorative filament, industrial filament, and various differential fibers.