Method for producing polypropylene flame-retardant fibre

Abstract

The invention relates to a method for producing polypropylene fire resistant fiber which includes steps as follows: A. self making fire resistant master batch that includes 30-50% decabromodiphenylethane, 10-30% diantimony trioxide, 0.3-0.5% calcium stearate; 1-3% chemical inhibitor, 10-20% dispersant, 0.03-0.5% ultraviolet absorbent; 0.03-0.05% cross linker, 20-40% PP slice; B. the raw material of step A is melt mixed granulation to obtain polypropylene fire resistant master batch by using a double screw extruder; C. the fire resistant master prepared by the step B mixes with polypropylene according with 2-8% rate that the material is mixed through a high speed mixing machine, is extrude and draft fibre, and is formed for preparing polypropylene fire resistant fiber. The method has advantages that the fire resistant agent decomposable produces incombustibility gas or liquid with high boiling point to cover the fabric surface in burning, and can isolate mutual diffusion of oxygen and combustible, has excellent fire resistance effect.

Description

Technical field: [0001] The invention relates to a production method of polypropylene flame-retardant fiber. Background technique: [0002] With the continuous improvement of people's living standards and the rapid development of social economy, the requirements for textiles at home and abroad are also getting higher and higher. Foreign countries have formulated laws and regulations on the flame retardant requirements of textiles, and fabrics for decorations and carpets must meet certain flame retardant requirements. In 1967, the United States formally formulated flame retardant regulations for fabrics. Britain, Germany and some European countries have also enacted flame retardant regulations one after another. In 1986, my country began to implement the "Code for Fire Protection Design of High-rise Buildings" on a trial basis. In 1984, light industry and textile systems stipulated that synthetic fiber carpets, decorative products, clothing and industrial products must meet...

AI Technical Summary

Problems solved by technology

In the spinning process of flame-retardant polypropylene fiber, generally 10% of functional masterbatch is added, which is prone to blockage. In addition, the spinning temperature is too high, resulting in the decomposition of additives. The flame-retardant effect of the product cannot meet the requirements, and the LOI can only reach around 22