In addition to the comfortable and beautiful, economical and durable performance required by traditional textiles, automotive interior functional fabrics also have higher requirements for safety and environmental protection such as antifouling, flame retardant, antistatic, easy to clean, and sun-resistant. It is mainly reflected in the following aspects.
Flame retardant performance
Functional fabrics for automotive interiors must have good flame retardancy and flame retardancy. In the event of a car fire, passengers can have enough time to leave. The composition and chemical structure of various synthetic fibers in automotive textile materials are different, and their thermal properties and flammability are also different. At present, there is no ideal flame retardant finishing agent suitable for various synthetic fibers.
Polyester fibers are heat shrinkable fibers that melt and form drips when they contact the flame. The fibers themselves are not easy to burn. However, the treatment of polyester fabric products with various chemical reagents prevents the melt droplet effect during melting, which makes it combustible.
Flame retardant for polyester fiber, mainly phosphorus and bromine compounds. Polypropylene fiber is a flammable fiber, which is not easy to carbonize during combustion, and all decomposes into flammable gas. Gas combustion emits a lot of heat, which promotes rapid combustion. Therefore, the flame retardance of polypropylene fibers is mainly to suppress the combustion reaction of gases by using the synergistic effect of halogen-containing flame retardants and flame retardant additives.
When the polyamide fiber is decomposed by heat, its N-C and CH2-C0 bonds are both broken. Adding a nitrogen-containing compound as a flame retardant helps the flame retardancy of the polyamide.
Light and UV resistance
Automotive interior functional fabrics can degrade due to long-term UV radiation, heat and moisture. Among the fibers, the acrylic fiber has better UV resistance than other fibers, but its abrasion resistance is not as good as polyester and nylon, and there are not many practical applications. Polyester has good abrasion resistance and UV resistance, so it is used more often. Appropriate anti-ultraviolet finishing of the interior fabric can effectively improve its anti-ultraviolet performance and reduce the degradation of fiber materials.
The haze is caused by the volatile components in interior decoration materials, especially various automotive decoration materials that use liquid, paste, powder and solid as raw materials, and various adhesives used to install these materials. The vaporized material forms a condensation phenomenon on the glass plate, especially on the windows and windshield, which affects the driver's vision and is difficult to remove, which seriously affects driving safety. The haze phenomenon produced by the accumulation of chemicals used in the dyeing, weaving and finishing of fabrics. The surface area of the fibers on the front of the fleece fabric is large, and the fogging phenomenon will be more serious. The problem of mildew caused by volatile substances affects the air quality in automobiles, and this issue is getting more and more attention.