Preparation process of photochromic polypropylene fiber yarn fabric

A photochromic and preparation technology, applied in textiles and papermaking, etc., can solve the problems of insufficient washing fastness, perspiration fastness and light fastness of photochromic materials, and achieve good thermal stability and discoloration effect. Significant, strong wash fastness effect

Inactive Publication Date: 2019-12-17
绍兴墨织韵纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects in the prior art such as insufficient washing fastness, perspiration fastness and light fastness of the photochromic material while ensuring the dyeing effect and discoloration effect of the photochromic material polypropylene yarn, the present invention Provide a preparation process of photochromic polypropylene yarn fabric

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation process of photochromic polypropylene fiber yarn fabric
  • Preparation process of photochromic polypropylene fiber yarn fabric

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A preparation process of photochromic polypropylene yarn fabric, comprising the following preparation steps:

[0024] Step 1, preparation of photochromic microcapsules: (1) Take the raw material with a molar ratio of formaldehyde and melamine of 3:1, first react the formaldehyde solution with 1 / 3 of melamine until it is clear and transparent, and use sodium hydroxide to carry out the reaction process. Adjust the acidity and alkalinity to make the system pH=8.0, the reaction temperature is 70°C, stir, then add 1 / 3 melamine to react until the system is clear and transparent, and finally add the remaining 1 / 3 melamine to react until clear and transparent to obtain a transparent prepolymer (2) Weigh the compound paraffin wax added with 20% photochromic solution, add an appropriate amount of emulsifier and deionized water, shear 5min under a high-speed disperser, and stir at a shear rate of 8000rpm to obtain a stable (3) Pour the O / W emulsion into a three-necked flask, stir ...

Embodiment 2

[0034] A preparation process of photochromic polypropylene yarn fabric, comprising the following preparation steps:

[0035]Step 1, preparation of photochromic microcapsules: (1) Take the raw material with a molar ratio of formaldehyde and melamine of 3:1, first react the formaldehyde solution with 1 / 3 of melamine until it is clear and transparent, and use sodium hydroxide to carry out the reaction process. Adjust the acidity and alkalinity until the pH of the system = 8.6, the reaction temperature is 70°C, stir, then add 1 / 3 melamine to react until the system is clear and transparent, and finally add the remaining 1 / 3 melamine to react until clear and transparent to obtain a transparent prepolymer (2) Weigh the compound paraffin wax added with 30% photochromic solution, add an appropriate amount of emulsifier and deionized water, shear 5min under a high-speed disperser, and stir at a shear rate of 8000rpm to obtain a stable (3) Pour the O / W emulsion into a three-necked flask,...

Embodiment 3

[0045] A preparation process of photochromic polypropylene yarn fabric, comprising the following preparation steps:

[0046] Step 1, preparation of photochromic microcapsules: (1) Take the raw material with a molar ratio of formaldehyde and melamine of 3:1, first react the formaldehyde solution with 1 / 3 of melamine until it is clear and transparent, and use sodium hydroxide to carry out the reaction process. Adjustment of acidity and alkalinity, pH of the system = 9.0, reaction temperature 70°C, stirring, then add 1 / 3 melamine to react until the system is clear and transparent, and finally add the remaining 1 / 3 melamine to react until clear and transparent to obtain a transparent prepolymer (2) Weigh the compound paraffin wax added with 40% photochromic solution, add an appropriate amount of emulsifier and deionized water, shear 5min under a high-speed disperser, and stir at a shear rate of 8000rpm to obtain a stable (3) Pour the O / W emulsion into a three-necked flask, stir fo...

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Abstract

The invention discloses a preparation process of a photochromic polypropylene fiber yarn fabric. The preparation process comprises the steps of preparation of photochromic microcapsules, wherein firstly, an in-batch prepolymerization method is adopted for preparing a melamine resin prepolymer, then paraffin is utilized for preparing a stable O / W-type emulsion, finally the O / W-type emulsion is poured in a three-necked flask, and the melamine resin prepolymer is dropwise added slowly; citric acid is used for adjusting the pH of the system, after a heat preservation reaction is completed, a suitable amount of urea is added for after-treatment, and finally through washing, suction filtration and drying, the photochromic microcapsules are obtained; preparation of a photochromic coating fabric,wherein a coating adhesive is prepared through waterborne polyurethane, the photochromic capsules and a thickening agent; a polypropylene fiber yarn fabric is uniformly coated with the coating adhesive; and through pre-drying and baking, the photochromic polypropylene fiber yarn fabric is prepared. According to the formaldehyde content of the prepared photochromic polypropylene fiber yarn fabric,the content of free formaldehyde is reduced, and the fabric can be used for manufacturing various garments directly making contact with the skin, is good in heat stability at 24 DEG C, and has an obvious color changing effect in the sun.

Description

technical field [0001] The invention relates to the technical field of photochromic materials, in particular to a preparation process of photochromic polypropylene yarn fabric. Background technique [0002] Photochromic material, also known as photochromic material or heliochromic material. Simple refers to adding chemical materials such as photochromic materials to the connected raw materials, and assisting other chemicals through post-processing, so as to become a colloidal material that can be printed and dyed. This type of photochromic material will appear colorless when it is not exposed to light indoors, so when it is turned from outdoors to indoors, this type of material will change a variety of colors after being exposed to ultraviolet light. Photochromic materials have the particularity of photochromic change, and on the contrary, they will return to the original colorless and light-colored color state in a dark or dark environment, and have the repeatability of ph...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00C08G12/38
CPCC08G12/38D06N3/0006D06N3/0038D06N3/0061D06N3/14D06N2209/067D06N2209/0807D06N2209/1678D06N2211/10
Inventor 杨世玉毕小蕾嵇春阳
Owner 绍兴墨织韵纺织科技有限公司
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