Preparation method of high temperature resistant flexible fabric material based on coating al2o3 sol-gel

A fabric material, high-temperature flexible technology, applied in textiles, papermaking, fiber processing, etc., can solve problems such as low strength, and achieve the effects of increased strength, good thermal insulation effect, and good thermal performance.

Active Publication Date: 2016-06-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem that the strength of the existing expandable heat-resistant resistance surface material is low, and the high-temperature resistance needs to be further improved, and provide an aluminum alloy based on coating Al 2 o 3 Preparation method and application of sol-gel high temperature resistant flexible fabric material

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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  • Preparation method of high temperature resistant flexible fabric material based on coating al2o3 sol-gel
  • Preparation method of high temperature resistant flexible fabric material based on coating al2o3 sol-gel

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Experimental program
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specific Embodiment approach 1

[0025] Specific implementation mode one: this implementation mode is based on coating Al 2 o 3 The preparation method of the high-temperature-resistant flexible fabric material of sol is implemented according to the following steps:

[0026] 1. Aluminum isopropoxide (C 9 h 21 AlO 3 ) into isopropanol ((CH 3 ) 2 CHOH), stirred evenly to obtain a mixed solution;

[0027] 2. Drop the mixed solution obtained in step 1 into a three-necked bottle filled with distilled water, press H+ and Al 3+ The molar ratio is (0.05 ~ 0.1): 1, then drop nitric acid into the there-necked flask, heat in a water bath to evaporate isopropanol, and then heat and reflux for 5 to 8 hours to obtain Al 2 o 3 Sol;

[0028] Three, the Al obtained in step two 2 o 3 The sol was dip-coated on the Kevlar fiber cloth to obtain a coating based on Al 2 o 3 Sol high temperature resistant flexible fabric material.

[0029] In this embodiment, Al 2 o 3 The sol is coated on the Kevlar fiber cloth. Becau...

specific Embodiment approach 2

[0030] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that step 1 adds aluminum isopropoxide to isopropanol according to the molar ratio of isopropanol to aluminum isopropoxide (4-6):1. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0031] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 2, nitric acid is added to the three-necked flask, and the isopropanol is evaporated by heating in a water bath at 85-95°C. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a preparation method and application of a high-temperature-resistant flexible cloth material based on Al2O3 sol and gel coating, relates to flexible cloth materials, and aims at solving the problems that an existing expandable unfolded and heatproof resistance plane material is relatively low in strength and the high temperature resistance is required to be improved. The high-temperature-resistant flexible cloth material coated with Al2O3 sol is prepared as follows: Al2O3 sol is prepared through aluminium isopropoxide and isopropanol, and then the sol is soaked and arranged to fiber cloth in a coating manner; the high-temperature-resistant flexible cloth material coated with Al2O3 gel is formed as follows: Al2O3 sol is processed into dry gel powder by supercritical drying, then mixed with PU particles and DMF to obtain a gel coating, and finally arranged on the cloth material in the coating manner. According to the preparation method, the cloth material coated with Al2O3 sol and gel is applied to expandable unfolded and heatproof resistance plane materials; the soft cloth material coated with the Al2O3 sol and gel is high in thermal performance and stretch strength.

Description

technical field [0001] The invention relates to flexible fabric materials, in particular to a coated Al 2 o 3 Preparation method and application of sol-gel fabric material. Background technique [0002] The inflatable reentry reducer is a new type of expandable heat-resistant resistance surface, folded and packaged on the outer surface of the return load, and inflated to expand the resistance surface during re-entry or entering the atmosphere, the purpose is to reduce aerodynamic force and aerodynamic thermal effect. Therefore, the expandable heat-resistant resistance surface needs to have technical characteristics such as flexible large-curvature folding, high strength, and high temperature resistance. [0003] The early research on the reducer mainly focused on the design of the structure of the deceleration parachute. The quality of the reducer was reduced and the stability was improved by continuously improving the shape structure. In addition, the influence of the air...

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 Patents(China)
IPC IPC(8): D06M11/45D06M23/00D06M23/08D06M101/36
Inventor 卫剑征侯雪刘羽熙宋博刘宇艳谢志民苗常青谭惠丰黄伟
Owner HARBIN INST OF TECH
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