CN-121976312-A - Bio-based flame-retardant PA56 fiber material and preparation method and application thereof

Abstract

The invention relates to the technical field of textile materials, in particular to a bio-based flame-retardant PA56 fiber material, and a preparation method and application thereof. The flame-retardant PA56 fiber material is prepared from the following raw materials, by mass, 100 parts of bio-based PA56, 10-25 parts of cellulose-containing bio-based flame retardant, 5-10 parts of PA56 flame-retardant synergist and 3-5 parts of compatibilizer, premixing bio-based PA56 and PA56 flame-retardant synergist master batches, adding the premix into a main feeding port of a double-screw extruder, adding the cellulose-containing bio-based flame retardant and the compatibilizer from a side feeding port, and obtaining the bio-based flame-retardant PA56 fiber material through melt spinning. The bio-based flame-retardant PA56 fiber material can be used for preparing biomass-based flame-retardant functional nylon fabric. The invention adopts the cellulose-containing bio-based flame retardant, has good compatibility with PA56, can endow nylon with good flame retardant property and thermal stability, can further improve the environmental protection of nylon, and the preparation raw materials of the flame retardant are all from cheap and easily obtained biomass materials, thus having good environmental protection.

Inventors

• WANG JIRONG
• ZHENG YA
• ZHAO XINHUA
• YIN YUANYUAN

Assignees

• 福建恒捷实业有限公司

Dates

Publication Date

20260505

Application Date

20260202

Claims (8)

1. 1. The bio-based flame-retardant PA56 fiber material is characterized by being prepared from the following raw materials, by mass, 100 parts of bio-based PA56, 10-25 parts of cellulose-containing bio-based flame retardant, 5-10 parts of PA56 flame-retardant synergist and 3-5 parts of compatibilizer, wherein the PA56 flame-retardant synergist is a nitrogen flame retardant, and the cellulose-containing bio-based flame retardant is a mixture of mannitol, glutamine and phytic acid compounded with the bio-based flame retardant and cellulose.
2. 2. The bio-based flame retardant PA56 fiber material of claim 1, wherein 10-40 parts of bio-based flame retardant is added to 100 parts of cellulose in said cellulose-containing bio-based flame retardant.
3. 3. The bio-based flame retardant PA56 fiber material of claim 1, wherein said PA56 flame retardant synergist is melamine cyanurate.
4. 4. The bio-based flame retardant PA56 fiber material of claim 1, wherein said compatibilizer is maleic anhydride grafted polypropylene PP-g-MA.
5. 5. The bio-based flame retardant PA56 fiber material of claim 1, wherein said cellulose comprises bacterial cellulose.
6. 6. The bio-based flame retardant PA56 fiber material of claim 1, wherein said bio-based flame retardant is prepared by the following steps: Mixing phytic acid, mannitol and toluene, refluxing and stirring at 130 ℃ for 6 hours, cooling to below 100 ℃, removing toluene under reduced pressure, adding glutamine and deionized water, reacting for 4 hours at room temperature, removing water by rotary evaporation, and drying to obtain the bio-based flame retardant.
7. 7. A method for preparing the bio-based flame retardant PA56 fiber material according to any one of claims 1-6, comprising the steps of: premixing the bio-based PA56 and PA56 flame retardant synergist master batch, adding the premix into a main feeding port of a double-screw extruder, adding a cellulose-containing bio-based flame retardant and a compatibilizer from a side feeding port, and obtaining the bio-based flame retardant PA56 fiber material through melt spinning.
8. 8. Use of the bio-based flame retardant PA56 fiber material according to any one of claims 1-6 for preparing a biomass-based flame retardant functional nylon fabric.

Description

Bio-based flame-retardant PA56 fiber material and preparation method and application thereof Technical Field The invention relates to the technical field of textile materials, in particular to a bio-based flame-retardant PA56 fiber material, and a preparation method and application thereof. Background The polyamide fiber is also called nylon, chinlon and the like, is a second largest synthetic fiber with the yield inferior to that of polyester fiber, and has good market prospect in the fields of military products, ropes, nets, ropes, tarpaulins, industrial filter cloth, high-grade sewing thread, T-shirt thread, umbrella fabric, sport textiles and the like due to the characteristics of high breaking strength, wear resistance, fatigue resistance, impact resistance, good dimensional stability, light weight, softness, good drapability, air permeability, moisture absorption, good elasticity and the like. The bio-based polyamide 56 is a novel bio-based fiber prepared from crops, trees, other plants, residues and contents thereof by biological, chemical, physical and other means, and has excellent mechanical properties and biodegradability. Polyamide 56 is similar to polyamide 66 in oil resistance, wear resistance, corrosion resistance, fatigue resistance, high strength, self-lubrication, and the like, and is superior to polyamide 6. With the rapid development of bio-based materials, the demand for flame retardant properties is also increasing, which has driven the research of bio-based flame retardants. Currently, common bio-based flame retardants include phytic acid, chitosan, lignin, cyclodextrins, alginates, and the like. However, the large-scale popularization and application of most bio-based flame retardants still have the key problems of insufficient thermal stability, poor interface compatibility and the like. Therefore, how to improve the performance of the fiber material on the premise of ensuring that the fiber material has environmental protection performance is a great challenge in the textile material industry at present. Disclosure of Invention The invention aims to solve the technical problem of providing a bio-based flame-retardant PA56 fiber material, a preparation method and application thereof, and the thermal stability of the fiber material is improved on the premise of having better flame-retardant effect and environmental protection performance. The invention is realized in the following way: The invention firstly provides a bio-based flame-retardant PA56 fiber material which is prepared from the following raw materials, by mass, 100 parts of bio-based PA56, 10-25 parts of cellulose-containing bio-based flame retardant, 5-10 parts of PA56 flame-retardant synergist and 3-5 parts of compatibilizer, wherein the PA56 flame-retardant synergist is a nitrogen flame retardant, and the cellulose-containing bio-based flame retardant is a mixture of mannitol, glutamine and phytic acid compounded with the bio-based flame retardant and cellulose. Further, 10-40 parts of the bio-based flame retardant are added to 100 parts of cellulose in the bio-based flame retardant containing cellulose, and the parts are expressed in parts by mass. Further, the PA56 flame retardant synergist is melamine cyanurate. Further, the compatibilizer is maleic anhydride grafted polypropylene PP-g-MA. Further, the cellulose comprises bacterial cellulose. Further, the preparation method of the bio-based flame retardant comprises the following steps: Mixing phytic acid, mannitol and toluene, refluxing and stirring at 130 ℃ for 6 hours, cooling to below 100 ℃, removing toluene under reduced pressure, adding glutamine and deionized water, reacting for 4 hours at room temperature, removing water by rotary evaporation, and drying to obtain the bio-based flame retardant. The invention also provides a preparation method of the bio-based flame-retardant PA56 fiber material, which comprises the following steps: premixing the bio-based PA56 and PA56 flame retardant synergist master batch, adding the premix into a main feeding port of a double-screw extruder, adding a cellulose-containing bio-based flame retardant and a compatibilizer from a side feeding port, and obtaining the bio-based flame retardant PA56 fiber material through melt spinning. Finally, the invention provides application of the bio-based flame-retardant PA56 fiber material in preparation of biomass-based flame-retardant functional nylon fabric. The biomass-based flame-retardant functional nylon fabric is obtained by the steps of stretching deformation, false twisting deformation, heat setting, oiling, winding, spinning and the like of the bio-based flame-retardant PA56 fiber material. The invention has the advantages that the bio-based flame retardant containing cellulose is adopted, has good compatibility with PA56, can endow nylon with good flame retardant property and thermal stability, can further improve the environmental protection of nylon, and the preparation raw