Preparation method for shape thermo-sensitive hydro-gel material

A temperature-sensitive hydrogel and body-shaping technology, applied in textiles and papermaking, fiber treatment, plant fibers, etc., can solve the problems of changing fabrics, low moisture permeability, and non-existence, so as to increase air permeability, Reduces breathability for warmth

Inactive Publication Date: 2017-03-15
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Textiles, especially cotton fibers, are the preferred fabrics for casual clothing due to their high moisture absorption properties and good affinity with the skin. However, textiles woven from fibers such as cotton are all porous materials. As clothing materials, this multi- The air structure will have different effects on the comfort of the human body in different environments. For example, when the human body is at high temperature, textiles are required to have higher moisture permeability, while at low temperatures, textiles are required to have lower moisture permeability. However, the current textile and clothing fabrics do not have the function of changing the moisture permeability and air permeability of the fabric with temperature changes; with the advancement of science and the improvement of people's quality of life, the demand for high-comfort textile fabrics is increasing. The research direction of developing temperature-sensitive intelligent breathing textiles has become a hot spot

Method used

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  • Preparation method for shape thermo-sensitive hydro-gel material
  • Preparation method for shape thermo-sensitive hydro-gel material
  • Preparation method for shape thermo-sensitive hydro-gel material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Measure 17.7g of isopropylamine, 32.7g of triethylamine and 75ml of ethyl acetate into a 250ml four-neck flask, and mix 22.6g of acryloyl chloride and 25ml of ethyl acetate in a 50ml constant pressure dropper. Add dropwise the mixture of acryloyl chloride and ethyl acetate in a constant pressure dropper to the four-neck flask. Stir in an ice-water bath, keep the reaction temperature in the bottle below 5°C, and continue stirring for 6 hours. Then filtered, the precipitate was washed with ethyl acetate and discarded, and the filtrate was rotary evaporated to obtain a reddish-brown viscous liquid, namely the crude product of N-isopropylacrylamide. Recrystallize with petroleum ether, add a small amount of activated carbon, filter while hot, and place the filtrate at room temperature to obtain white needle-shaped crystal isopropylacrylamide NIPAM.

[0028] (2) Weigh 20g of PEG600, dry it in vacuum at 120°C for 2 hours, then cool down to 90°C, add maleic anhydride MA at...

Embodiment 2

[0035] (1) Measure 17.7g of isopropylamine, 32.7g of triethylamine and 75ml of ethyl acetate into a 250ml four-neck flask, and mix 22.6g of acryloyl chloride and 25ml of ethyl acetate in a 50ml constant pressure dropper. Add dropwise the mixture of acryloyl chloride and ethyl acetate in a constant pressure dropper to the four-neck flask. Stir in an ice-water bath, keep the reaction temperature in the bottle below 5°C, and continue stirring for 6 hours. Then filtered, the precipitate was washed with ethyl acetate and discarded, and the filtrate was rotary evaporated to obtain a reddish-brown viscous liquid, namely the crude product of N-isopropylacrylamide. Recrystallize with petroleum ether, add a small amount of activated carbon, filter while hot, and place the filtrate at room temperature to obtain white needle-shaped crystal isopropylacrylamide NIPAM.

[0036] (2) Weigh 20g of PEG400, dry it in vacuum at 120°C for 2 hours, then lower the temperature to 90°C, add maleic anh...

Embodiment 3

[0043] (1) Measure 17.7g of isopropylamine, 32.7g of triethylamine and 75ml of ethyl acetate into a 250ml four-neck flask, and mix 22.6g of acryloyl chloride and 25ml of ethyl acetate in a 50ml constant pressure dropper. Add dropwise the mixture of acryloyl chloride and ethyl acetate in a constant pressure dropper to the four-neck flask. Stir in an ice-water bath, keep the reaction temperature in the bottle below 5°C, and continue stirring for 6 hours. Then filtered, the precipitate was washed with ethyl acetate and discarded, and the filtrate was rotary evaporated to obtain a reddish-brown viscous liquid, namely the crude product of N-isopropylacrylamide. Recrystallize with petroleum ether, add a small amount of activated carbon, filter while hot, and place the filtrate at room temperature to obtain white needle-shaped crystal isopropylacrylamide NIPAM.

[0044] (2) Weigh 20g of PEG1000, dry in vacuum at 120°C for 2 hours, then cool down to 90°C, add maleic anhydride MA at a...

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Abstract

The invention relates to a preparation method for a shape thermo-sensitive hydro-gel material. The method comprises the following steps: (1) carrying out vacuum drying on polyether glycol or polyester glycol, reducing temperature to 80-90 DEG C and then reacting with maleic anhydride MA for 4-6h, thereby obtaining a macromolecular diene compound; (2) by taking the macromolecular diene compound as a cross-linking agent, isopropyl acrylamide NIPAM as a functional monomer and an alkenyl compound containing hydroxyl or amido as a cross-linking reaction monomer, mixing the materials with an emulgator and an initiator and reacting for 6-8h at 70-80 DEG C, thereby obtaining the shape thermo-sensitive hydro-gel material. After the shape thermo-sensitive hydro-gel material provided by the invention is settled on a textile fabric, the autonomic regulation for the air permeability and water vapor permeability of the textile fabric under different temperature conditions can be realized, and then the initiative regulation for the moisture permeability, air permeability and heat insulating property of the textile fabric can be realized.

Description

technical field [0001] The invention belongs to the field of textile post-finishing, and in particular relates to a method for preparing a body-shaped temperature-sensitive hydrogel material. Background technique [0002] Thermosensitive hydrogel, which is a kind of water-absorbing and can be at a certain temperature T r It is a temperature-sensitive hydrogel system that loses water when it is time, and this change process is reversible; its hydrogel particle volume can shrink or expand in response to temperature changes, and the hydrogel particle volume is specific temperature T r There are often big changes before and after. The synthesis and research on thermosensitive hydrogels are increasing, but they mainly focus on the linear poly-N-isopropylacrylamide (PNIPAM), which has been widely used in coatings, biomedicine, shading materials and other fields. [0003] Textiles, especially cotton fibers, are the preferred fabrics for casual clothing due to their high moisture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F220/54C08F220/28D06M15/285D06M15/564D06M101/06
CPCC08F290/062D06M15/285D06M15/564D06M2101/06C08F220/54
Inventor 闵洁肖蕊苏梦婷陈利民严瑞祥
Owner DONGHUA UNIV
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