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Method for preparing temperature regulation textile by sol-gel technology

A gel technology and fabric technology, applied in the direction of fabric surface trimming, heating/cooling fabric, textile material processing, etc., can solve the problems of limiting the temperature regulation effect of phase change materials, unfavorable application of textile fabrics, increasing safety hazards, etc. Low production cost, low price, and the effect of improving thermal conductivity

Inactive Publication Date: 2012-09-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The interfacial polymerization method does not have strict requirements on the ratio of raw materials, the reaction rate is fast, the effect is good, it can be carried out at room temperature, and the temperature control is simple, etc., but the monomers used must have high activity for polycondensation reaction
In addition, in-situ polymerization and interfacial polymerization are used to produce phase change microcapsules, and the walls of the capsules are mostly high polymers, such as urea-formaldehyde resins, copolymers of melamine and formaldehyde, etc., such copolymers are flammable, and this type of wall material It is harmful to the human body, increases safety hazards, and is not conducive to the application of textile fabrics
In addition, this type of copolymer makes the prepared phase change microcapsules stick to each other, and the thermal conductivity is low, which limits the temperature adjustment effect of the phase change material.

Method used

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  • Method for preparing temperature regulation textile by sol-gel technology
  • Method for preparing temperature regulation textile by sol-gel technology
  • Method for preparing temperature regulation textile by sol-gel technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1: Dissolve 7g of tetraethyl orthosilicate in a mixture of 14.3g of ethanol and 15g of water under mechanical stirring at 400 rpm, adjust the pH value to 2.6 with hydrochloric acid, and stir for 3 hours to form a stable and uniform Ethyl orthosilicate liquid preparation;

[0024] Step 2: Add 6g of paraffin, 37.8g of water and 13g of emulsifier into a high-speed emulsifier, and emulsify for 30 minutes at 10,000 rpm to form a stable and uniform paraffin core emulsion;

[0025] Step 3: Under mechanical stirring at 60°C and 400 rpm, slowly add the tetraethyl orthosilicate solution obtained in the first step to the paraffin core emulsion obtained in the second step, and then add 10g of acrylic latex , prepared into a phase-change microcapsule finishing liquid, and stirred evenly for 2 hours.

Embodiment 2

[0027] Step 1: Dissolve 5g of tetraethyl orthosilicate in a mixture of 11g of ethanol and 11g of water under mechanical stirring at 400 rpm, adjust the pH value to 2.6 with hydrochloric acid, and stir for 3 hours to form a stable and uniform Ethyl silicate liquid preparation;

[0028] Step 2: Add 5g of paraffin, 29g of water and 10g of emulsifier into a high-speed emulsifier, and emulsify for 30 minutes at 10,000 rpm to form a stable and uniform paraffin core emulsion;

[0029] Step 3: Under mechanical stirring at 60°C and 400 rpm, slowly add the tetraethyl orthosilicate solution obtained in the first step to the paraffin core emulsion obtained in the second step, and then add 8g of acrylic latex , prepared into a phase-change microcapsule finishing liquid, and stirred evenly for 2 hours.

Embodiment 3

[0031] Step 1: Dissolve 10g of tetraethyl orthosilicate in a mixture of 26g of ethanol and 24g of water under mechanical stirring at 400 rpm, adjust the pH to 3.1 with hydrochloric acid, and stir for 3 hours to form a stable and uniform Ethyl silicate liquid preparation;

[0032] Step 2: Add 13g of paraffin, 68g of water and 24g of emulsifier into a high-speed emulsifier, and emulsify for 30 minutes at 10,000 rpm to form a stable and uniform paraffin core emulsion;

[0033] Step 3: Under mechanical stirring at 60°C and 400 rpm, slowly add the tetraethyl orthosilicate solution obtained in the first step to the paraffin core emulsion obtained in the second step, and then add 19g of acrylic latex , prepared into a phase-change microcapsule finishing liquid, and stirred evenly for 2 hours.

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Abstract

The invention discloses a method for preparing temperature regulation textile by a sol-gel technology. The method for preparing the temperature regulation textile by the sol-gel technology comprises the steps of adding tetraethoxysilane into mixed liquid of ethanol and water to prepare tetraethoxysilane liquid preparation liquid, and adjusting pH value to 2-4; respectively adding paraffin wax, water and an emulsifying agent into a high-speed emulsion machine to prepare paraffin core emulsion; slowly dropping the tetraethoxysilane liquid preparation liquid into the paraffin core emulsion, and adding synthetic latex to prepare phase change micro-capsule finishing liquid; settling the phase change micro-capsule finishing liquid on the textile through a two-soaking and two-rolling method, and baking to obtain the temperature regulation textile. According to the invention, by adopting the sol-gel method and the phase change micro-capsule finishing liquid taking tetraethoxysilane as wall material and paraffin as core material to prepare the temperature regulation textile, the defect that polymers such as urea resin and the like are taken as the wall material is solved, the heat conduction efficiency and the physical and chemical stability are improved, and the excellent non-toxic and harmless performances are provided.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for preparing temperature-regulating fabrics by sol-gel technology. Background technique [0002] Solid-liquid phase change materials have small volume changes and large heat enthalpy during the phase change process, so there are relatively many studies on them in various fields, and their applications are relatively extensive. However, solid-liquid phase change materials are unstable in the phase transition process, which limits their applications. In order to solve this problem, microencapsulation technology is often used to coat the phase change material in the wall material, thereby restricting the flow of the liquid phase change material. Microcapsules usually refer to tiny particles with a diameter between 1-1000 microns. With the development of technology, the diameter of capsules can also reach the nanometer level. Since the capsule is nan...

Claims

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Application Information

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IPC IPC(8): D06M15/53D06M13/02D06M11/79D06M15/263D06M15/564D06M23/12D06B3/18D06B15/00D06C7/00
Inventor 刘晓艳楼樱红于伟东
Owner DONGHUA UNIV
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