Polyurethane/cotton cellulose composite aerogel insole and preparation method thereof

A technology of compounding aerogel and cotton cellulose, which is applied in insoles, footwear, applications, etc., to achieve the effects of easy promotion, expansion of application fields, and simple preparation process

Active Publication Date: 2021-08-13
新绛县景如制鞋有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant research analysis, both polyurethane aerogel and cellulose aerogel have their own advantages in being used as insole materials, but there are still shortcomings when using a single polyurethane aerogel or a single cellulose aerogel to make insoles

Method used

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  • Polyurethane/cotton cellulose composite aerogel insole and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] In this embodiment, a polyurethane / cotton cellulose composite airgel insole is prepared by the following method, including the following steps:

[0027] (1) Preparation of water-based polyurethane: Add 0.75 mol of polyethylene glycol with a molecular weight of 2000 into a three-necked flask, vacuumize at 93°C for 1.5h to remove moisture; cool to 70°C, add 0.225mol of toluene diisocyanate for reaction , the reaction time is 1.5h; refer to the HG / T2409-1992 method to measure the content of NCO, add 0.02mol dimethylolpropionic acid to carry out the chain extension reaction for 0.75h; cool down to 5°C, add 3% sodium bisulfite dissolved in A mixed solution of 80mL isopropanol and 200mL water was stirred at high speed for 0.75h; after the reaction, the pH value was adjusted to 3.5 to obtain a water-based polyurethane emulsion;

[0028] (2) Preparation of cotton cellulose solution: Dissolve 20g of waste cotton fabric in 150mL of sodium hydroxide-urea-water mixed solution at -7...

Embodiment 2

[0032] In this embodiment, a polyurethane / cotton cellulose composite airgel insole is prepared by the following method, including the following steps:

[0033] (1) Preparation of water-based polyurethane: Add 0.5 mol of polyethylene glycol with a molecular weight of 2000 into a three-necked flask, vacuumize at 90°C for 1 hour to remove moisture; cool to 60°C, add 0.15mol of toluene diisocyanate for reaction, The reaction time is 1h; refer to the HG / T2409-1992 method to determine the content of NCO, add 0.01mol dimethylolpropionic acid to carry out the chain extension reaction for 0.5h; cool down to 0°C, add 80mL isocyanate dissolved in 1% sodium bisulfite The mixed solution of propanol and 160mL water was stirred at a high speed for 0.5h; after the reaction was completed, the pH value was adjusted to 3 to obtain a water-based polyurethane emulsion;

[0034] (2) Preparation of cotton cellulose solution: Dissolve 20g of waste cotton fabric in 150mL of sodium hydroxide-urea-water...

Embodiment 3

[0038] In this embodiment, a polyurethane / cotton cellulose composite airgel insole is prepared by the following method, including the following steps:

[0039] (1) Preparation of water-based polyurethane: Add 1 mol of polyethylene glycol with a molecular weight of 2000 into a three-necked flask, vacuumize at 95°C for 2 hours to remove moisture; cool to 80°C, add 0.3mol of toluene diisocyanate to react, react The time is 2 hours; refer to the HG / T2409-1992 method to measure the content of NCO, add 0.03mol dimethylolpropionic acid for chain extension reaction for 1 hour; cool down to 8°C, add 150mL of isopropanol dissolved in 5% sodium bisulfite and The mixed solution of 450mL water was stirred at high speed for 1 hour; after the reaction was completed, the pH value was adjusted to 4 to obtain a water-based polyurethane emulsion;

[0040] (2) Preparation of cotton cellulose solution: Dissolve 20g of waste cotton fabric in 150mL of sodium hydroxide-urea-water mixed solution at -1...

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Abstract

The invention relates to a polyurethane/cotton cellulose composite aerogel insole and a preparation method thereof, the insole is prepared by the following steps: firstly preparing aqueous polyurethane and cotton cellulose solution, then compounding the aqueous polyurethane and cotton cellulose solution, pouring the compounded solution into an insole mold under the condition that a cross-linking agent, polyethylene glycol and a catalyst are doped, curing to prepare wet gel, and freeze-drying the wet gel to obtain the polyurethane/cotton cellulose composite aerogel insole. The polyurethane/cotton cellulose composite aerogel insole prepared by the invention effectively integrates the advantages of polyurethane and cotton cellulose, and has the characteristics of comfort, softness, porosity, air permeability and the like. The polyurethane/cotton cellulose composite aerogel insole has a wide market prospect, the preparation process is simple, and the raw material source is wide.

Description

technical field [0001] The invention belongs to the technical field of airgel preparation, and in particular relates to a polyurethane / cotton cellulose composite airgel insole and a preparation method thereof. Background technique [0002] The insole plays an important role in the comfort of the shoe, so a good pair of insoles determines the comfort and quality of the shoe. Insoles are the most common personal items in people's lives. There are many types of insoles on the market, which can be divided into cloth, leather, sponge, silica gel, latex and other insoles according to their materials. Although insoles are common supplies in life, people need to wear shoes for most of their life, and the quality of shoes affects people's health. Inappropriate shoes can cause problems such as foot odor and foot pain. In order to solve these problems, it is not enough to just change the shoes, the function of the insole is very important, and the insole determines whether the environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08L75/08C08L71/02C08K5/1515C08J9/28A43B17/14
CPCC08J9/28C08J9/0061C08J9/0023A43B17/14C08J2301/02C08J2475/08C08J2471/02C08J2205/026
Inventor 周凡雨彭雄义邓健董雄伟蔡亚君刘仰硕蔡映杰董会杰张圣祖吕少仿
Owner 新绛县景如制鞋有限责任公司
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