Anti-mite antibacterial thermoplastic polymer melt spun fiber and preparation method thereof

Abstract

The invention relates to a thermoplastic polymer melt spun fiber with anti-mite and antibacterial functions and a preparation method thereof. The preparation method comprises the following steps: preparing a silver-loaded soda borosilicate ceramic powder which serves as an anti-mite and antibacterial component through a sol-gel method, performing surface modification on superfine ceramic powder through a coupling agent, granulating to prepare a high-concentration anti-mite and antibacterial master batch which takes a thermoplastic polymer as a matrix in a double-screw extruder, and finally, blending the anti-mite and antibacterial master batch with the thermoplastic polymer according to a certain ratio, and performing melt spinning to obtain the anti-mite and antibacterial fiber. The anti-mite and antibacterial fiber prepared by the method has obvious effects, is high in durability, high in washing resistance and high in safety.

Description

technical field [0001] The invention relates to a chemical fiber and a processing method thereof, in particular to a thermoplastic polymer melt-spun fiber with anti-mite and antibacterial functions and a preparation method thereof. Background technique [0002] Mites live in clothes, bedding, sofas and carpets, and can easily cause various diseases such as asthma, rhinitis and dermatitis in humans or other organisms. 90% of children's asthma is caused by mites. Some pathogenic bacteria and fungi, such as Escherichia coli, Staphylococcus aureus, and Candida albicans, can cause harm to human health through the skin, respiratory tract, and digestive system. Thermoplastic polymer melt-spun fibers such as nylon, polyester, and polypropylene are often used as raw materials for clothing and home textiles, and clothing and home textiles are important media for the reproduction of mites and the spread of pathogens. Therefore, research and development have both anti-mite and antibacte...

AI Technical Summary

Problems solved by technology

[0004] Since the 1940s, fibers and fabrics with a single antibacterial function have been developed, but the following problems still exist in antibacterial fabrics: (1) narrow antibacterial spectrum

It is difficult for an antibacterial agent with a single antibacterial group to have a broad-spectrum antibacterial effect: for example, halogenated diphenyl ethers have poor antibacterial effects on fungi and molds; quaternary ammonium compounds have poor antibacterial effects on non-negatively charged fungi

(2) poor durability

Due to the low binding force between the antibacterial agent itself and the fiber or the quaternary ammonium salt is not resistant to anionic surface detergents, it does not have good washing resistance

(3) Low security

For organic anti-mite and antibacterial agents, there are two problems: on the one hand, these agents belong to the category of pesticides and have certain toxicity. When they are in a free state and are lost during use, they may contact the human body and cause harm to the human body. Irritant and poisonous; on the other hand, most of these organic anti-mite agents are difficult to meet the high temperature conditions required for melt-spun fibers, and will be transformed and decomposed in the thermoplastic polymer melt

For inorganic anti-mite and antibacterial agents, although they can withstand the high temperature conditions of the thermoplastic polymerization process or molding process, there are a series of problems such as uneven dispersion, poor adhesion, and easy elution and loss, which may not only cause broken filaments during the spinning process, but also It will deteriorate the physical properties of the fiber and reduce the anti-mite and antibacterial effect of the fabric

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