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Aerogel composite fabric utilizing aqueous adhesive and preparation method thereof

A water-based adhesive, using water-based technology, applied in chemical instruments and methods, lamination devices, lamination, etc., to achieve the effects of good moisture permeability, easy quality control, and excellent heat insulation performance

Inactive Publication Date: 2014-09-03
航天海鹰(镇江)特种材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017]In order to solve the problems in the development and application of airgel fabrics that the airgel material is not firmly combined with the inner and outer fabrics, the airgel powder is easy to escape, and the airgel is transparent after compounding. In order to solve the problems of poor wettability and poor flexibility, the invention provides an airgel composite cloth using a water-based binder and a preparation method thereof

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

[0038] The polyester fiber non-woven fabric is used for reinforcement, the thermal conductivity is 0.016w / m·k, and the airgel material with a thickness of 2mm is used as the core layer. The above-mentioned airgel material is cleaned and purged by a brush. Then coat the water-based acrylic resin adhesive on the upper and lower surfaces of the airgel material, and cover the upper layer with a grammage of 35g / m 2 , the yarn count density is 400T nylon woven fabric, and the weight of the lower layer is 120g / m 2 Polyester non-woven fabric, pressurized by a hot roller with a temperature of 85°C and a pressure of 500N, then dried with hot air at 100°C, trimmed and packaged. The thermal conductivity coefficient of the obtained composite airgel cloth is 0.017w / m k, and the moisture permeability is 4100g / (m 2 ·24h)), the flexural rigidity is 0.9mN·cm, and no dust escapes from the surface of the cloth. The fabric can be used for cold tents, insoles, etc.

Embodiment 2

[0040] Reinforced with polyacrylonitrile pre-oxidized fiber non-woven fabric, the thermal conductivity is 0.017w / m·k, and the airgel material with a thickness of 3mm is used as the core layer. The above-mentioned airgel material is cleaned and purged by a scraper. Then the upper and lower surfaces of the airgel material are coated with a water-based silicone resin binder, and the upper layer is covered with a grammage of 40g / m 2 , the yarn count density is 380T Kevlar woven fabric, and the weight of the lower layer is 150g / m 2 Aramid non-woven fabric, pressurized by a hot roller with a temperature of 90°C and a pressure of 400N, then dried with hot air at 100°C, and then trimmed and packaged. The thermal conductivity coefficient of the obtained composite airgel cloth is 0.018w / m k, and the moisture permeability is 3900g / (m 2 ·24h)), the flexural rigidity is 1.2mN·cm, and no dust escapes from the surface of the cloth. The fabric can be used for fire-fighting clothing, high-te...

Embodiment 3

[0042] The polyester fiber non-woven fabric is used for reinforcement, the thermal conductivity is 0.017w / m·k, and the airgel material with a thickness of 2mm is used as the core layer. The above airgel material is cleaned and purged through viscose. The upper and lower surfaces of the airgel material are covered with water-based polyurethane resin, dried with hot air at 100 degrees Celsius, and then covered with EVA hot melt adhesive on the upper and lower surfaces. The upper layer is covered with 120g cotton cloth, and the lower layer is covered with 110g polyester non-woven fabric. The temperature is 85 ℃, a pressure of 900N hot roller pressure, trimming and packaging. The thermal conductivity coefficient of the obtained composite airgel cloth is 0.019w / m k, and the moisture permeability is 3500g / (m 2 ·24h)), the flexural rigidity is 1.4mN·cm, and no dust escapes from the surface of the cloth. The fabric can be used for heat-insulating interiors of cars and ships, among ot...

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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Abstract

The invention discloses an aerogel composite fabric utilizing aqueous adhesive and a preparation method thereof. The composite fabric is characterized in that a fiber reinforced aerogel material is adopted as a core layer, a layer of fabric respectively covers the upper surface and the bottom surface of the core layer, and the core layer is bonded with the fabric through the aqueous adhesive. The fiber reinforced aerogel material is subjected to adhesive clearing and purging treatment, after the aqueous adhesive covers the top and the bottom of the fiber reinforced aerogel material, a layer of fabric respectively covers the top and the bottom of the fiber reinforced aerogel material, and the aerogel composite fabric is trimmed and packaged after being pressurized through a hot roll. The prepared aerogel composite fabric has the advantages of excellent heat insulation property, good humidity permeability, good softness, no dust leakage and the like and can be applied to cold-proof or fireproof tents, sleeping bags, ground mats, shoes, shoe pads, clothes and hats as well as heat insulation interiors of cars, airplanes, ships and trains, so that the application range of the aerogel composite fabric is greatly enlarged; moreover, the process is simple, the quality is easy to control, and mass production can be realized.

Description

technical field [0001] The invention relates to a composite fabric and a preparation method thereof, in particular to an airgel composite fabric with a flexible fiber non-woven fabric reinforced airgel material as a core layer and upper and lower composite fabrics. Background technique [0002] Traditional cold-proof functional fabrics are mainly three-layer structure, the outer layer is nylon fabric with PU coating or PTFE film, the middle is fleece fabric or expanded PTFE material, and the inner layer is soft interlining. However, in extremely cold regions such as the north and south levels, ordinary cold-proof clothing often cannot protect scientific research personnel well, and it is urgent to develop a cold-proof fabric with better performance. [0003] Traditional fire-resistant fabrics are mainly used in high-temperature fields such as fire-fighting clothing. They are mainly composed of outer layers, waterproof and breathable layers, heat insulation layers, and comfo...

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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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/26B32B7/12B32B27/02B32B37/12B32B37/10
Inventor 高志强金承黎黄铌吴锦源许斌
Owner 航天海鹰(镇江)特种材料有限公司
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