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A kind of preparation method of thermosensitive discoloration organic glass

A temperature-sensitive discoloration, plexiglass technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of high manufacturing cost, immature preparation method, general temperature-sensitive discoloration effect, etc., and achieves sensitive discoloration, good discoloration effect, Simple preparation method

Inactive Publication Date: 2018-11-23
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, color-changing plexiglass is a common color-changing material, but its preparation method is not yet mature, the manufacturing cost is high, and the temperature-sensitive color-changing effect is general

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation method of color-changing organic glass, comprising the following steps:

[0015] (1) Preparation of color-changing microcapsules: Accurately weigh crystal violet lactone, stearic acid, and myristyl alcohol in a weight ratio of 1:2:15, stir and dissolve at 80°C to prepare liquid A; weigh Tween 80 and distilled water, the weight ratio of the two is 1:40, stir and mix evenly at 70°C to prepare liquid B; slowly add liquid B to liquid A dropwise, and control the quality of Tween 80 to 1 / 2 of the total weight of liquid A 3%, stirred at 70°C for 2 hours to obtain liquid C; weighed methyl methacrylate and benzoyl peroxide, controlled the weight ratio of the two to 100:1, and stirred and reacted at 80°C for 30 minutes to obtain Liquid D; add liquid D dropwise to liquid C, control the mass ratio of liquid D and liquid C to 1:3, react at 80°C for 45 minutes, then filter the product, wash with water, and dry to obtain color-changing microcapsules;

[0016] (2) Prepar...

Embodiment 2

[0019] A preparation method of color-changing organic glass, comprising the following steps:

[0020] (1) Preparation of color-changing microcapsules: Accurately weigh crystal violet lactone, stearic acid and myristyl alcohol in a weight ratio of 1:2:10, stir and dissolve at 80°C to prepare liquid A; weigh Tween 80 and distilled water, the weight ratio of the two is 1:40, stir and mix evenly at 70°C to prepare liquid B; slowly add liquid B to liquid A dropwise, and control the quality of Tween 80 to 1 / 2 of the total weight of liquid A 4%, stirred at 70°C for 2h to obtain liquid C; weighed methyl methacrylate and benzoyl peroxide, controlled the weight ratio of the two to 100:1, stirred and reacted at 80°C for 30min, obtained Liquid D; add liquid D dropwise to liquid C, control the mass ratio of liquid D to liquid C to be 1:2, react at 80°C for 30 minutes, then filter the product, wash with water, and dry to obtain color-changing microcapsules;

[0021] (2) Preparation of colo...

Embodiment 3

[0023] A preparation method of color-changing organic glass, comprising the following steps:

[0024] (1) Preparation of color-changing microcapsules: Accurately weigh crystal violet lactone, stearic acid and myristyl alcohol in a weight ratio of 1:3:30, stir and dissolve at 80°C to prepare liquid A; weigh Tween 80 and distilled water, the weight ratio of the two is 1:40, stir and mix evenly at 70°C to prepare liquid B; slowly add liquid B to liquid A dropwise, and control the quality of Tween 80 to 1 / 2 of the total weight of liquid A 5%, stirred at 70°C for 2 hours to obtain liquid C; weighed methyl methacrylate and benzoyl peroxide, controlled the weight ratio of the two to 100:1, and stirred and reacted at 80°C for 30 minutes to obtain Liquid D; add liquid D dropwise to liquid C, control the mass ratio of liquid D and liquid C to 1:3, react at 80°C for 45 minutes, then filter the product, wash with water, and dry to obtain color-changing microcapsules;

[0025] (2) Prepara...

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Abstract

The invention provides a preparation method of thermosensitive color-changing organic glass. The method comprises the following steps of 1 preparation of thermosensitive color-changing microcapsules, wherein crystal violet lactone, stearic acid and tetradecyl alcohol are weighed accurately, stirring and dissolving are conducted, an aqueous solution of Tween 80 is dropwise added, stirring is conducted for 2 h at the temperature of 70 DEG C, a solution A is obtained, methyl methacrylate and benzoyl peroxide are weighed, a stirring reaction is conducted for 30 min at the temperature of 80 DEG C, a solution B is obtained, the solution B is dropwise added into the solution A, reacting is conducted for 30-45 min at the temperature of 80 DEG C, filtering, water washing and drying are conducted, and the color-changing microcapsules are obtained; 2 preparation of thermosensitive color-changing organic glass, wherein methyl methacrylate and benzoyl peroxide are weighed, a stirring reaction is conducted for 30-60 min at the temperature of 85 DEG C, the color-changing microcapsules are added, stirring continues to be conducted for 5 min, rapid cooling is conducted to reach 50 DEG C, standing is conducted for 1 h, the temperature is increased to 70 DEG C, constant temperature treatment is conducted for 2 h, the temperature is increased to 100 DEG C, and constant temperature treatment is conducted for 2-3 h, and the color-changing organic glass is obtained. According to the method, the color-changing organic glass is obtained by conducting bulk polymerization on thermosensitive color-changing microcapsules polymethyl methacrylate in situ, and the product has the advantages of being sensitive in color changing and uniform in color and luster.

Description

technical field [0001] The invention belongs to the field of composite material preparation and relates to a preparation method of temperature-sensitive color-changing organic glass. Background technique [0002] Temperature-sensitive discoloration is a phenomenon that changes color according to the difference in temperature. This phenomenon can be used to make various products with temperature-sensitive discoloration. For example, temperature-sensitive discoloration materials can be used to build plant growth sheds, which can achieve different temperatures. Different lighting effects facilitate the selection of lighting for plants and have certain practicability. Among them, color-changing plexiglass is a common color-changing material, but its preparation method is not yet mature, the manufacturing cost is high, and the temperature-sensitive color-changing effect is general. [0003] In view of this, the present invention performs bulk polymerization of color-changing mic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/14C08F2/44B01J13/02
CPCB01J13/02C08F2/44C08F120/14
Inventor 李海明宋丽
Owner TIANJIN CHENGJIAN UNIV
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