What is the difference between polypropylene and polyacrylonitrile fibers?

There are differences between polypropylene and polyacrylonitrile fibers in the following aspects:

1、 Raw materials and chemical structure

Raw materials:

Polypropylene: Made from polypropylene as raw material.

Polyacrylonitrile fiber: using acrylonitrile as the main raw material, usually with the addition of other comonomers such as methyl acrylate, sodium methacrylate sulfonate, etc.

Chemical structure:

Polypropylene: The molecular structure is relatively simple and regular, with the main chain connected by carbon carbon single bonds and only a small amount of simple functional groups such as methyl in the side chains.

Polyacrylonitrile fiber: The molecular structure is relatively complex, with different copolymer monomer units in addition to acrylonitrile units, making its chemical structure more diverse.

2、 Performance characteristics

Appearance and feel:

appearance:

Polypropylene: The color is relatively simple, usually white or semi transparent.

Polyacrylonitrile fiber: bright color, complete chromatography, can present rich colors.

feel:

Polypropylene: It has a stiff feel and high smoothness.

Polyacrylonitrile fiber: has a soft and fluffy texture, similar to wool.

Physical performance:

Specific gravity:

Polypropylene: It is the lightest fiber among all fibers, with a specific gravity of about 0.91.

polyacrylonitrile fibers: slightly higher specific gravity than polypropylene.

strength:

Polypropylene: High strength, similar to nylon.

Polyacrylonitrile fiber: slightly lower in strength than polypropylene.

Warmth:

Polypropylene: It has a certain degree of warmth retention, but not as good as polyacrylonitrile fiber.

polyacrylonitrile fibers: excellent thermal insulation performance, close to cashmere, superior to polypropylene.

Light resistance:

Polypropylene: It has a certain degree of light resistance, but not as strong as polyacrylonitrile fibers.

Polyacrylonitrile fiber: It has strong light resistance and is not easily faded or aged when exposed to sunlight.

Chemical properties:

Acid and alkali resistance:

Polypropylene: It has good resistance to chemicals such as acid and alkali.

Polyacrylonitrile fiber: It also has good acid and alkali resistance, but may be affected to some extent under certain strong acid and alkali conditions.

Antioxidant activity:

Polypropylene: It has good antioxidant properties.

polyacrylonitrile fibers: Strong antioxidant properties, not easily oxidized by oxygen in the air and aging.

Shandong Huimin Taili Chemical Fiber Products Co., Ltd. was founded in 2017, the company now has the domestic advanced fiber production line, twisting production line. Anti-aging, acid and alkali resistance, low boiling water shrinkage, high breaking strength, low elongation, environmental protection and pollution-free. Widely used in chemical fiber rope net, fire hose, sling, safety belt, concrete, mortar, engineering fiber, etc., is to replace polyester, nylon, ethylene fiber, nylon, glass fiber new ideal material.