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Medical nonwoven composite material and preparation method thereof

A composite material, non-woven technology, applied in the application, non-woven fabric, rayon manufacturing and other directions, can solve problems such as single function, achieve the effect of short process flow, ductility not easy to break, long-lasting radiation protection effect

Active Publication Date: 2016-05-11
CHTC JIAHUA NONWOVEN CO LTD
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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

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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) Weigh 30 parts of poly(butylene adipate / terephthalate), 20 parts of polylactic acid and 30 parts of polypropylene in parts by weight, and mix thoroughly to obtain mixture A;

[0025] (2) Blend the mixture in step (1) with 2 parts of sodium dodecylbenzenesulfonate and 1 part of silver-loaded titanium dioxide, and then extrude and granulate through 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 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 stretched into ...

Embodiment 2

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

[0030] (1) Weigh 40 parts of poly(butylene adipate / terephthalate), 30 parts of polylactic acid and 40 parts of polypropylene in parts by weight and mix thoroughly to obtain mixture A;

[0031] (2) Blend the mixture in step (1) with 3 parts of sodium dodecylbenzenesulfonate and 1 part of ε-polylysine, and then extrude and granulate through 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 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 coag...

Embodiment 3

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

[0036] (1) Weigh 50 parts of poly(butylene adipate / terephthalate), 30 parts of polylactic acid and 40 parts of polypropylene in parts by weight, and mix thoroughly to obtain mixture A;

[0037] (2) Blend the mixture in step (1) with 4 parts of sodium dodecylbenzenesulfonate and 2 parts of silver-loaded titanium dioxide, and then extrude and granulate through 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 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 stretc...

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Abstract

The invention provides a preparation method of a medical nonwoven composite material. The preparation method comprises the following specific steps: (1) respectively weighing 30-50 parts by weight of poly(adipate-co-butylene terephthalate), 20-30 parts by weight of polylactic acid and 30-40 parts by weight of polypropylene, and fully mixing to obtain a mixture A; (2) blending the mixture obtained in the step (1) with 1-4 parts by weight of an antistatic agent and 0.5-2 parts by weight of an antibacterial agent, and extruding and pelletizing by a double-screw extruder to obtain a blend; (3) drying the blend obtained in the step (2) in vacuum, and heating, fusing, extruding, stretching, cooling and self-adhering the dried blend by the screw extruder to obtain a non-woven; and (4) spraying an anti-radiation layer to one side of the non-woven obtained in the step (3), and finally, drying and shaping in a drying oven. The medical nonwoven composite material has antibacterial property as well as anti-radiation and antistatic performance, and is mainly applied to manufacture of medical masks.

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 a preparation method thereof. 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 of raw mat...

Claims

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Application Information

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IPC IPC(8): D04H3/005D04H3/147D04H3/16A41D13/11D01F1/10D01F1/09
CPCA41D13/11D01D13/00D01F1/09D01F1/103D01F8/06D01F8/14D04H1/4382D04H1/541D04H3/005D04H3/147D04H3/16D06M11/00D06M13/00D06M15/00D06N3/0011D06N3/0036D06N3/0038D06N3/009D10B2321/022D10B2331/04D10B2401/061D10B2401/13D10B2401/16D10B2509/00
Inventor 万全军
Owner CHTC JIAHUA NONWOVEN CO LTD
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