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Medical non-woven fabric composite and preparation method and application thereof

A technology of composite materials and non-woven fabrics, applied in application, melt spinning, non-woven fabrics, etc., can solve problems such as single function, achieve short process flow, long-lasting radiation protection effect, and good broad-spectrum antibacterial effect

Inactive Publication Date: 2016-11-16
朱小涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country consumes a large amount of medical non-woven fabrics every year, but the current commercially available medical non-woven fabrics have relatively single functions, and there is a lack of a medical non-woven fabric that integrates antibacterial, radiation protection, and antistatic functions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of medical non-woven composite material, comprising the steps of:

[0024] (1) Take 30 parts of polyadipate / butylene terephthalate, 20 parts of polybutylene terephthalate and 30 parts of polycarbonate respectively by weight and mix thoroughly to obtain mixture A;

[0025] (2) The mixture in step (1) is blended with 2 parts of sodium dodecylbenzenesulfonate and 1 part of silver-loaded titanium dioxide, and then extruded and granulated by a twin-screw extruder to obtain a blend , the extrusion temperature is 230°C;

[0026] (3) Vacuum-dry the blend in step (2) at 100°C for 32 hours, so that the moisture content is less than 120ppm. The dried blend is heated by a screw extruder, melted at 260°C, and extruded into a melt. When the melt is extruded from the spinneret hole of the die head, it is blown by the high-pressure hot air flow with a flow rate of 90m / sec and a temperature of 260°C on both sides of the spinneret hole, and the blend melt is stretch...

Embodiment 2

[0029] A preparation method of medical non-woven composite material, comprising the steps of:

[0030] (1) Take 40 parts of polyadipate / butylene terephthalate, 30 parts of polybutylene terephthalate and 40 parts of polycarbonate respectively by weight and fully mix to obtain mixture A;

[0031] (2) The mixture in step (1) is blended with 3 parts of sodium dodecylbenzenesulfonate and 1 part of ε-polylysine, and then extruded and granulated by a twin-screw extruder to obtain blend, the extrusion temperature is 230°C;

[0032] (3) Vacuum-dry the blend in step (2) at 110°C for 36 hours, so that the moisture content is less than 100ppm. The dried blend is heated by a screw extruder, melted at 280°C, and extruded into a melt. When the melt is extruded from the spinneret hole of the die, it is blown by the high-pressure hot air flow with a flow rate of 100m / sec and a temperature of 280°C on both sides of the spinneret hole, and the blend melt is stretched into ultra-fine fibers and ...

Embodiment 3

[0035] A preparation method of medical non-woven composite material, comprising the steps of:

[0036] (1) Take 50 parts of polyadipate / butylene terephthalate, 30 parts of polybutylene terephthalate and 40 parts of polycarbonate respectively by weight and fully mix to obtain mixture A;

[0037] (2) The mixture in step (1) is blended with 4 parts of sodium dodecylbenzenesulfonate and 2 parts of silver-loaded titanium dioxide, and then extruded and granulated by a twin-screw extruder to obtain a blend , the extrusion temperature is 250°C;

[0038] (3) Vacuum-dry the blend in step (2) at 120°C for 20 hours, so that the moisture content is less than 110ppm. The dried blend is heated by a screw extruder, melted at 250°C, and extruded into a melt. When the melt is extruded from the spinneret hole of the die head, it is blown by the high-pressure hot air flow with a flow rate of 120m / sec and a temperature of 270°C on both sides of the spinneret hole, and the melt of the blend is str...

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Abstract

The invention provides a preparation method of a medical non-woven fabric composite. The method specifically includes the following steps of firstly, weighing 30-50 parts by weight of adipic acid / polybutylene terephthalate, 20-30 parts by weight of polybutylene terephthalate and 30-40 parts by weight of polycarbonate to be sufficiently mixed to obtain a mixture A; secondly, blending the mixture in the first step with 1-4 parts by weight of antistatic agent and 0.5-2 parts by weight of antibacterial agent, and conducting extruding and granulating through a twin-screw extruder to obtain a blend; thirdly, conducting vacuum drying on the blend in the second step, conducting heating, fusing, extruding, stretching, cooling and self-adhering on the dried blend through a screw extruder to form a non-woven fabric; fourthly, spraying an anti-radiation layer on one side of the non-woven fabric obtained in the third step, and putting the fabric into a drying box to be dried and shaped. The prepared medical non-woven fabric composite has antibacterial performance, radiation prevention performance and antistatic performance and is mainly applied to preparing a medical mask.

Description

technical field [0001] The invention belongs to the field of non-woven fabrics, and in particular relates to a medical non-woven fabric composite material and its preparation method and application. Background technique [0002] Non-woven fabric (non-woven fabric) is a kind of fabric formed without spinning and weaving. It just orients or randomly arranges short textile fibers or filaments to form a web structure, and then uses mechanical, thermal bonding or chemical bonding. Reinforced by other methods. To put it simply: it is not interwoven and knit together by yarns one by one, but the fibers are directly bonded together through physical methods, so when you get the sticky scale in your clothes , you will find that it is impossible to extract the thread ends one by one. Nonwovens have broken through the traditional textile principles, and have the characteristics of short process flow, fast production speed, high output, low cost, wide application, and multiple sources ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04H1/4382D01D5/08D01D5/084D01F8/14D01F1/09D01F1/10A41D13/11
CPCD04H1/4382A41D13/1192D01D5/08D01D5/084D01F1/09D01F1/103D01F8/14
Inventor 朱小涛
Owner 朱小涛
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