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A kind of high moisture permeability biodegradable composite material and its production method

A technology of biodegradable and composite materials, which is applied in the field of high moisture permeability biodegradable composite materials and its production, can solve the problems of insufficient moisture permeability and high production cost, and achieve high water vapor transmission rate, low production cost, The effect of high production efficiency

Active Publication Date: 2019-02-01
GRI MEDICAL & ELECTRONICS TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the current problems of high production cost and insufficient moisture permeability of high-moisture-permeable multilayer composite materials with biodegradable properties and rapid degradability, the present invention provides a high-moisture-permeable biodegradable composite material and its production method

Method used

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  • A kind of high moisture permeability biodegradable composite material and its production method
  • A kind of high moisture permeability biodegradable composite material and its production method
  • A kind of high moisture permeability biodegradable composite material and its production method

Examples

Experimental program
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Effect test

Embodiment 1

[0036]Containing 5% perfluorinated C6 acrylic acid copolymer emulsion (selected Japan Daikin TG-581), uniformly coated on one side of 45gsm polyvinyl alcohol spunlace nonwoven fabric by spraying method, coating amount is 1%, immediately Enter the oven to dry at a temperature of 120°C, and bake at a temperature of 175°C for 30 seconds. Roll up after cooling.

[0037] Take 100kg of 2499 polyvinyl alcohol and put it into a mixing vessel with 95°C jacket heating. Add 550kg of water, 11kg of glycerin, 0.125kg of polyethylene glycol laurate, and 10kg of ammonium nitrate, stir and dissolve for more than 2 hours for later use.

[0038] The above-mentioned dissolved polyvinyl alcohol solution is evenly coated on the frosted PET substrate, and the coating amount is 160gsm, and the above-mentioned polyvinyl alcohol spunlaced nonwoven fabric is flatly pasted on the wet film without tension, and the diameter is 15mm. After the sponge roller is gently rolled once, it is dried in an oven a...

Embodiment 2

[0041] In the above examples, the grammage of the polyvinyl alcohol spunlaced nonwoven fabric was changed to 62gsm. The obtained finished product was 91 gsm, and the moisture permeability was 755.23 g / d.sm.

Embodiment 3

[0043] Apply the perfluorinated C6 acrylic copolymer emulsion containing 10% (selected Asahi Glass AG-E82) evenly on one side of the 45gsm polyvinyl alcohol spunlace nonwoven fabric by spraying method, the coating amount is 1.5%, enter immediately The oven was dried at 120° C. and baked at 175° C. for 30 seconds. Roll up after cooling.

[0044] Take 100kg of 2499 polyvinyl alcohol and put it into a mixing vessel with 95°C jacket heating. Add 550kg of water, 9kg of glycerin, 0.3kg of polyethylene glycol laurate, and 20kg of ammonium nitrate, stir and dissolve for more than 2 hours for later use.

[0045] The above-mentioned dissolved polyvinyl alcohol solution is evenly coated on the frosted PET substrate, the coating amount is 150gsm, the above-mentioned polyvinyl alcohol spunlaced nonwoven fabric is flatly pasted on the wet film without tension, and the diameter is 15mm. After the sponge roller is gently rolled once, it is dried in an oven at a temperature of 120-140 ° C, a...

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Abstract

The invention discloses a high-moisture penetrability biodegradable composite material and a production method thereof. The existing high-moisture penetrability multi-layer composite material which has biodegradability and can be quickly degraded has the problems of high production cost and insufficient moisture penetrating amount. The high-moisture penetrability biodegradable composite material disclosed by the invention comprises a polyvinyl alcohol non-woven fabric and a base membrane which is coated with a polyvinyl alcohol water solution, wherein one surface of the polyvinyl alcohol non-woven fabric is hydrophobic and the other surface is hydrophilic; and the hydrophobic surface of the polyvinyl alcohol non-woven fabric is compounded with the base membrane which is coated with the polyvinyl alcohol water solution. The high-moisture penetrability biodegradable composite material disclosed by the invention has higher water vapor penetrability than the existing high-moisture penetrability polyvinyl alcohol protecting material; the hydrophilic surface of the polyvinyl alcohol non-woven fabric has a hydrophilic property, can absorb sweat and body fluid of a human body, and is very high in comfort. By the production method, the production efficiency is high, and the production cost is low.

Description

technical field [0001] The invention relates to the field of biodegradable composite materials, in particular to a high moisture permeability biodegradable composite material and a production method thereof. Background technique [0002] Disposable protective products, such as medical surgical gowns, surgical drapes, isolation protective clothing, etc., are disposable, which provides convenience for medical staff, patients, and nuclear industry workers, greatly reducing the time spent on treatment and work of related personnel. The risk of cross-infection and contamination by harmful substances during the process greatly reduces the postoperative infection rate, greatly improves the health of the people, and reduces the use of antibiotics. In order to improve the ability of disposable protective clothing to isolate pathogens or harmful substances, protective clothing generally uses composite fabrics, and the most reliable and best-performing materials are composite materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30B32B27/02B32B27/12B32B27/36B32B27/22B32B27/18C08J7/04C08L67/02C08L29/04
CPCB32B5/022B32B27/12B32B27/36B32B2255/02B32B2255/10B32B2255/26B32B2262/0223B32B2307/716B32B2307/7163B32B2307/7166B32B2307/724B32B2307/728B32B2535/00B32B2571/00C08J7/0427C08J2367/02C08J2429/04
Inventor 方海素鞠云会杨朝群王坤唐岷
Owner GRI MEDICAL & ELECTRONICS TECH CO LTD
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