Manufacturing method of medical protective sintered breathable material with sterilization channel

Abstract

The invention relates to a manufacturing method of a medical protective sintered breathable material with a sterilization channel. The medical protective sintered breathable material is formed by combining ultra-high molecular weight polyethylene powder, nano-silver ion powder and nano-titanium dioxide powder, the ultra-high molecular weight polyethylene powder selects a powder with the particle size of 360 nm, the nano-silver ion powder selects a powder with the particle size of 120 nm, and the nano-titanium dioxide powder selects a powder with the particle size of 240 nm. The breathable material comprises the raw materials in percentage by volume: + / -75% of the ultra-high molecular weight polyethylene powder, + / -15% of the nano silver ion powder and + / -10% of the nano titanium dioxide powder. In the manufacturing process of the breathable material, raw material proportioning, feeding, die assembly, sintering, heating, heat preservation and cooling are conducted, and then die stripping is conducted. A sintered microporous breathable material finished product with the sterilization channel and full penetration is formed, coronavirus is forced not to pass through, and even if the coronavirus passes through the channel, the coronavirus is fully killed by silver ions under the catalysis of nano titanium oxide, so that the breathable material can be used as a medical protective clothing material.

Description

technical field [0001] The invention relates to a porous and breathable material made of ultra-high molecular weight polyethylene material, in particular to a sintered microporous material composed of ultra-high molecular weight polyethylene, nano-silver ions, and nano-titanium dioxide powder with sterilization channels and full-through medical protection. Breathable material and method for making same. Background technique [0002] In order to prevent cross-infection of pneumonia such as novel coronavirus pneumonia (COVID-19), the use of protective equipment such as medical protective clothing is getting more attention, but its material selection and manufacture are also very important. Because the particle size of the coronavirus is very small, with an average particle size of 100 nanometers, it is very easy to invade the human body through general protective materials, so it is particularly important to protect specific personnel, such as medical personnel, staff in isola...

AI Technical Summary

Problems solved by technology

However, its resistance to hydrostatic pressure is relatively low, and its barrier efficiency to virus particles is relatively poor, so it is not an ideal material for protective clothing

[0006] 3. Polypropylene spunbond-meltblown-spunbond composite nonwoven fabric, the meltblown fabric is characterized by fine fiber diameter, large surface area, fluffy, soft, good drapability, low filtration resistance, high filtration efficiency, anti-static water Strong pressure ability, but low strength and poor wear resistance, which limit the development of its application field to a considerable extent

[0007] 4. Polymer coated fabrics. There are many types of coatings for protective fabrics, including polyvinyl chloride, polyethylene, polychloroprene rubber and other synthetic rubbers. The waterproofness of this kind of protective clothing and the ability to block bacterial particles The performance is very good and can be reused, but the moisture permeability is poor, and the large amount of sweat from the human body cannot be discharged, and the wearing comfort performance is poor. It is really a last resort to use rubber-coated fabric protective clothing during the SARS period

However, the shielding performance of the flash-formed cloth surface is not uniform enough, and the barrier properties to blood and body fluids are not ideal.

[0010] Although the above six types of medical protective materials currently used have their own advantages, the existing defects are also very obvious. In-depth research and improvement are needed at the technical level, so that they can not only block bacterial particles from contacting the human body, but also discharge human sweat. , to ensure comfortable wearing, and can be reused to reduce waste of resources and secondary pollution

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