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A kind of polyurethane/cotton cellulose composite aerogel insole and preparation method thereof

A technology of composite airgel and cotton cellulose, which is applied in the direction of insoles, footwear, clothing, etc., to achieve the effects of expanding application fields, easy promotion, and simple preparation process

Active Publication Date: 2022-07-01
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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  • A kind of polyurethane/cotton cellulose composite aerogel insole and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

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

Embodiment 2

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

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

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

Embodiment 3

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

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

[0040] (2) Preparation of cotton cellulose solution: Dissolve 20g waste cotton fabric in 150mL sodium hydroxide-urea-water mixed solution at -10°C, the m...

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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 first preparing aqueous polyurethane and cotton cellulose solution, then compounding the aqueous polyurethane and cotton cellulose solution, and the compound solution is Adding crosslinking agent, polyethylene glycol and catalyst into insole mould, curing to prepare wet gel, and the wet gel is freeze-dried to obtain polyurethane / cotton cellulose composite aerogel insole. The polyurethane / cotton cellulose composite aerogel insole prepared by the invention effectively combines the advantages of polyurethane and cotton cellulose, and the insole has the characteristics of comfortable softness, porous air permeability and the like. The polyurethane / cotton cellulose composite aerogel insole of the invention has broad market prospect, simple preparation process and wide raw material sources.

Description

technical field [0001] The invention belongs to the technical field of aerogel preparation, in particular to a polyurethane / cotton cellulose composite aerogel 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 insole 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. According to the material, they can be divided into: cloth, leather, sponge, silicone, latex and other insoles. Although insoles are common products in life, people need to wear shoes most of the time in their lives. The quality of shoes affects people's health. Unsuitable shoes can cause foot odor, foot pain and other problems. In order to solve these problems, it is not enough to just change the shoes, the role of the insole is very important, and the insole determines whether the environment inside the sh...

Claims

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Application Information

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Patent Type & Authority Patents(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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