Does the chemical composition of polypropylene filament have any effect on its performance?

The chemical composition of polypropylene color filaments, namely polypropylene, has a significant effect on its performance. The following are elaborated from several aspects:

1. Physical properties

Density and weight:

Because it is mainly composed of polypropylene, its density is relatively small (about 0.91g/cm3), and therefore light weight, which makes polypropylene color silk in the production of lightweight clothing and products that need to reduce weight.

Morphology and structure:

The vertical surface of the polypropylene fiber is flat and smooth, and the cross-section is circular, which is closely related to its chemical composition. The molecular structure of polypropylene enables the polypropylene color yarn to form a uniform and smooth fiber surface during spinning.

Second, mechanical properties

Strength and wear resistance:

Polypropylene filament has high strength and wear resistance, which is due to the close arrangement and mutual entanglement of polypropylene molecular chains. This structure enables the polypropylene fiber to maintain good stability when subjected to external force and is not easy to break.

Elasticity and elongation:

Polypropylene yarn has good elasticity and elongation, and can be quickly restored to its original state after being stretched. This is also due to the flexibility and recoverability of the polypropylene molecular chain.

3. Chemical properties

Chemical resistance:

Polypropylene filament has good resistance to acids and bases, which makes it maintain good stability in a variety of chemical environments. The chemical inertness of polypropylene makes the polypropylene color silk less susceptible to chemical attack.

Chromaticity:

The dyeability of polypropylene silk is relatively poor, mainly because the chemical structure of polypropylene makes it difficult to combine with dyes. However, through the stock solution coloring or special dyeing process, this defect can be overcome to make the polypropylene color silk show a rich color.

Fourth, thermal performance and optical performance

Thermal stability:

The thermal stability of polypropylene filament is poor, and it is easy to age. At high temperature, the molecular chain of polypropylene may break or recombine, leading to the degradation of fiber properties. Therefore, it is necessary to pay attention to temperature control during the processing and use of polypropylene fiber.

Light resistance:

The polypropylene color silk is also poor in light resistance, and prolonged exposure to ultraviolet light may cause the fiber to fade and age. In order to improve the light resistance of polypropylene fiber, anti-aging agents can be added in the spinning process or special dyes and auxiliaries can be used.

In summary, the chemical composition of polypropylene fiber has many effects on its performance. Understanding these influences helps to better select and use polypropylene color filaments to meet the needs of different fields and products.

Ningbo Dazhong Chemical Fiber Industry Co., Ltd. long-term production and management: PP yarn, polypropylene filament, PP FDY yarn, polyester staple fiber, polypropylene full draft wire, polypropylene POY yarn, polyester POY yarn.