How much do you know about acrylic fiber, which is why it is called “synthetic wool”?

Characteristics of acrylic yarn Acrylic fiber has excellent properties. Because its properties are close to wool, it is called “synthetic wool”. Usually, in daily life,…

Characteristics of acrylic yarn

Acrylic fiber has excellent properties. Because its properties are close to wool, it is called “synthetic wool”. Usually, in daily life, when we buy polyacrylonitrile fiber from merchants, we will commonly call it acrylic fiber. Acrylic synthetic fibers contain polyacrylonitrile or acrylonitrile copolymer with an acrylonitrile content greater than 85%.

Acrylic fiber can be blended with wool, and its products are mostly used in civilian applications, such as wool, blankets, knitted sportswear, tarpaulin, curtains, artificial fur, plush , bulked yarn, hose, parasol cloth, etc.

Acrylic fiber is also the raw material for high-tech products-carbon fiber. It can be spun purely or blended with natural fibers to obtain various specifications of medium-thick yarn and fine yarn “cashmere” according to the requirements of different uses such as being resistant to insects.

Acrylic fiber has unique thermal extensibility and is suitable for making products such as bulked yarn, wool, knitted fabrics and artificial fur. After improving the performance of acrylic fiber, it feels soft and plump, easy to dye, and has bright color. The elasticity is not as good as wool, polyester and other fibers, especially after repeated stretching, the residual deformation is larger. Therefore, the cuffs and collars of clothes made of acrylic fiber are easy to deform.

Acrylic is less hygroscopic than nylon and is prone to static electricity and pilling.

Acrylic fiber has low thermal conductivity and light texture, so it has good warmth retention. It also has excellent sunlight resistance and is resistant to insects and mold. It is widely used in Knitted clothing. Can be dyed with disperse dyes, cationic dyes and acid dyes. Feixian Jinyuan Textile Co., Ltd. is engaged in the production and processing of acrylic yarn. It has the characteristics of complete variety, good quality, fast delivery and reasonable price. Its products are sold in Shandong, Shanghai, Zhejiang, Jiangsu, Fujian, Guangdong, Heilongjiang, etc. Hot sales.

The main production process of acrylic fiber

The main production process of serifon: polymerization → spinning Silk→preheat→steam drawing→water washing→drying→heat setting→curling→cutting→packing.

Although acrylic fiber is usually called polyacrylic fiber, acrylic fiber (commonly known as the first monomer) only accounts for 90%~94%. The second monomer accounts for 5% ~ 8%, and the third monomer is 0.3% ~ 2.0%.

This is because the fibers made of monoacrylonitrile polymer lack flexibility, are brittle, and are very difficult to dye. In order to overcome these shortcomings of polyacrylonitrile, people use the method of adding a second monomer to make the fiber supple; adding a third monomer to improve the dyeing ability.

1. Production of eye fiber

The raw material of cylindrical fiber is petroleum Cheap propylene as a by-product of cracking: Since polyacrylonitrile copolymer only decomposes but does not melt when heated above 230C, it cannot be used like polyester or nylon fiber

We use melt spinning instead of solution spinning. Spinning can be done by dry method or wet method. Dry spinning has high speed and is suitable for spinning imitation silk fabrics. Very suitable for spinning short fibers, which are fluffy and soft and suitable for making wool-like fabrics.

2. Performance and uses of acrylic fiber

Elasticity: Its elasticity is better, second only to polyester, and about 2 times higher than nylon. Strength: Although the strength of acrylic fiber is not as good as polyester and nylon, it is 1~ higher than wool. 2.5 times. Heat resistance: The softening temperature of the fiber is 190~230C, second only to polyester among synthetic fibers. Light resistance: The light resistance of polyester fiber is the best among all synthetic fibers when exposed to open air for one year, and the strength only decreases by 20%. %. Acrylic fiber is resistant to acids, oxidants and general organic solvents, but not to alkali.

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Author: clsrich