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Preparation method of photo-cured durable liquid-crystal thermochromic garment material

A thermochromic and light-curing technology, applied in microsphere preparation, microcapsule preparation, fiber treatment, etc., can solve the problems of liquid crystal pollution, increase the burden on enterprises, consume a lot of energy, etc., and achieve good washing fastness and wear resistance. , good social benefits, the effect of broad market application prospects

Inactive Publication Date: 2014-12-10
SHANGHAI CHALLENGE TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although thermal baking can provide better fastness, its high temperature treatment for a certain period of time will break the wall material of the microcapsules, causing the liquid crystal to be polluted, reducing the durability and service life of the liquid crystal thermochromic clothing fabric, and thermal baking It also consumes a lot of energy and increases the burden on enterprises

Method used

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  • Preparation method of photo-cured durable liquid-crystal thermochromic garment material
  • Preparation method of photo-cured durable liquid-crystal thermochromic garment material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix 30mL of 10g / L gelatin and 10g / L gum arabic at 40°C, add 20mL of 5g / L core material to mix liquid crystal dichloromethane solution, and shear at 10000r / min for 5 minutes to obtain a dispersed emulsion; Move the phase into a three-neck flask, adjust the pH to 4 with 10% acetic acid solution, stir for 30 minutes, cool the ice water to below 5°C, add 37% formaldehyde solution equal to the amount of gelatin, and continue stirring for 30 minutes to make the microcapsules The wall solidified and hardened, and 10% sodium hydroxide solution was added to adjust the pH value to 9, and the stirring was continued for 2 hours to slowly raise the solution to room temperature; finally, suction filtration was performed to obtain liquid crystal microcapsules. (The mixed liquid crystal is cholesteryl pelargonate (CPE) and cholesteryl oleyl carbonate (COC), the ratio of which is 40:60).

[0026] Prepare coating paste. The raw material components are: 10g of liquid crystal microcapsule...

Embodiment 2

[0030] Mix 30mL of 10g / L gelatin and 10g / L gum arabic at 40°C, add 20mL of 5g / L core material to mix liquid crystal dichloromethane solution, and shear at 20000r / min for 10 minutes to obtain a dispersed emulsion; Move the phase into a three-neck flask, adjust the pH to 4 with 10% acetic acid solution, stir for 30 minutes, cool the ice water to below 5°C, add 37% formaldehyde solution equal to the amount of gelatin, and continue stirring for 30 minutes to make the microcapsules The wall solidified and hardened, and 10% sodium hydroxide solution was added to adjust the pH value to 9, and the stirring was continued for 2 hours to slowly raise the solution to room temperature; finally, suction filtration was performed to obtain liquid crystal microcapsules. (wherein said mixed liquid crystal is cholesteryl pelargonate (CPE), cholesteryl chloride (CC), cholesterol carbonate (DCC), cholestenyl p-nonylphenyl carbonate (CNPC), and its ratio is 45: 10:15:30).

[0031] Prepare coating ...

Embodiment 3

[0035] Mix 30mL of 10g / L gelatin and 10g / L gum arabic at 40°C, add 20mL of 5g / L core material to mix liquid crystal dichloromethane solution, and shear at 15000r / min for 7 minutes to obtain a dispersed emulsion; Move the phase into a three-neck flask, adjust the pH to 4 with 10% acetic acid solution, stir for 30 minutes, cool the ice water to below 5°C, add 37% formaldehyde solution equal to the amount of gelatin, and continue stirring for 30 minutes to make the microcapsules The wall solidified and hardened, and 10% sodium hydroxide solution was added to adjust the pH value to 9, and the stirring was continued for 2 hours to slowly raise the solution to room temperature; finally, suction filtration was performed to obtain liquid crystal microcapsules. (wherein the mixed liquid crystal is cholesteryl pelargonate (CPE), cholesteryl benzoate (CBZ), cholesteryl carbonate (DCC), cholestenyl p-nonylphenyl carbonate (CNPC), and its ratio is 36.8:15.1:19.2:28.9).

[0036]Prepare coa...

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Abstract

The invention relates to a preparation method of a photo-cured durable liquid-crystal thermochromic garment material. The method comprises the following steps: (1) preparing liquid-crystal microcapsules; (2) preparing a coating paste containing the liquid-crystal microcapsules; and (3) coating the coating paste containing the liquid-crystal microcapsules on a fabric, and sequentially carrying out drying and ultraviolet curing on the fabric. The thermochromic garment material prepared according to the invention has excellent washing fastness and abrasion resistance; and in addition, an ultraviolet (UV) curing mode is adopted, which subverts a traditional heated baking curing mode, so that the consumption of various energies such as natural gas, liquefied petroleum gas and coal is reduced, the production cost of enterprises can be greatly reduced, and the production efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of textile post-finishing, and in particular relates to a method for preparing a light-cured durable liquid crystal thermochromic clothing fabric. Background technique [0002] Liquid crystal is a strange condensed state of matter except solid state, liquid state and gas state. It has both anisotropy similar to crystal and fluidity of liquid. Among them, the cholesteric liquid crystal in the thermotropic liquid crystal has the characteristics of dynamic thermochromic effect, reversible and repeatable temperature display, fast response speed and good light stability. Making it into liquid crystal microcapsules and printing them on the clothing fabric can make the pattern on the clothing fabric change color with the temperature change, so as to achieve the effect of decoration. Clothing brings movement and beauty, which is more popular in the market. [0003] Durable liquid crystal thermochromic finishing of fabrics h...

Claims

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Application Information

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IPC IPC(8): D06M15/564D06M23/12D06M13/232D06M13/224D06M13/236B01J13/02
Inventor 柯华田太洲张国兴杨秀芳张鹏
Owner SHANGHAI CHALLENGE TEXTILE
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