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Temperature-sensitive color-changing APET material and application thereof

A temperature-sensitive color-changing and temperature-sensitive technology, applied in the field of temperature-sensitive color-changing APET materials, can solve the problem that the material is not degradable, and achieve the effect of good compatibility

Inactive Publication Date: 2021-06-08
银金达(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most materials are not degradable, not environmentally friendly and have compatibility issues with blended substrates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Mix 430g of cholestenyl nonanoate CPE, 250g of cholestenyl chloride CC, and 280g of cholestenyl oleic acid carbonate COC in proportion to obtain a mixed liquid crystal; 5000g of self-made polylactic acid, 11920g of acetone, 5.96g of PVA1788, Disperse and dissolve for more than 24 hours. After it is completely dissolved and transparent, add the above compound mixed liquid crystal and continue to stir for 2-3 hours. Add it to the spray drying tower, heat it to 50°C, spray it from the nozzle, and blow it with dry compressed air at 60°C.

[0032] The above-mentioned capsule 5g and the APET particle of 995g are blended and injected to obtain the particle;

Embodiment 2

[0034] Mix 660g of cholestenyl nonanoate CPE, 550g of cholestenyl chloride CC, and 180g of cholestenyl oleic acid carbonate COC in proportion to obtain a mixed liquid crystal; 6000g of self-made polylactic acid, 14780g of acetone, 7.39g of PVA1788, Disperse and dissolve for more than 24 hours. After it is completely dissolved and transparent, add the above compound mixed liquid crystal and continue to stir for 2-3 hours. Add it to the spray drying tower, heat it to 50°C, spray it from the nozzle, and blow it with dry compressed air at 60°C.

[0035] The above-mentioned capsule 4g ​​and the APET particle of 996g are blended and injected to obtain the particle;

Embodiment 3

[0037] Mix 500g cholestenyl nonanoate CPE, 700g cholestenyl chloride CC, and 200g cholestenyl oleic acid carbonate COC in proportion to obtain a mixed liquid crystal; 5000g self-made polylactic acid, 12800g acetone, 6.4g PVA1788, at room temperature Disperse and dissolve for more than 24 hours. After it is completely dissolved and transparent, add the above compound mixed liquid crystal and continue to stir for 2-3 hours. Add it to the spray drying tower, heat it to 50°C, spray it from the nozzle, and blow it with dry compressed air at 60°C.

[0038] The above-mentioned capsule 3g and the APET particle of 997g are blended and injected to obtain the particle;

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PUM

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Abstract

The invention relates to a temperature-sensitive color-changing APET material and application thereof. A temperature-sensitive liquid crystal material is microencapsulated through polylactic acid and then is blended with APET for injection molding to obtain corresponding particles. Polylactic acid with a certain molecular weight and temperature-sensitive olefine acid cholesteric liquid crystal are mixed to prepare microcapsules through a phase separation method, and then the microcapsules and APET are blended and subjected to injection molding to obtain particles containing the temperature-change microcapsules. The polylactic acid is a material with the molecular weight larger than 50,000, the temperature-sensitive olefine acid cholesteric liquid crystal comprises cholesteric pelargonic acid ester CPE, cholesteric chloride CC and cholesteric oleic acid carbonic ester COC mixed compound liquid crystal, the compound ratio is 40-70%: 2-10%: 10-30%, and the effects of displaying red at about 15-20 DEG C, developing green at about 23-28 DEG C and developing blue at about 33-39 DEG C in the temperature developing range can be achieved. The color developing temperature error does not exceed 3 DEG C. And after mixing and injection molding with APET, various materials in the forms of films, plates and the like can be prepared. The temperature-sensitive color-changing APET material can be widely applied to the fields of high-end cosmetics, medical and health products, toys for children and the like to obtain corresponding color effects.

Description

technical field [0001] The invention belongs to the technical field of material modification, and in particular relates to a temperature-sensitive discoloration APET material and its application. Background technique [0002] Polyethylene terephthalate (hereinafter referred to as APET) is a common thermoplastic environmentally friendly polymer material, which is widely used in cosmetics, food, electronics, toys, Printing industry and other packaging, among which colored APET has unique advantages especially in high-end cosmetics and food packaging. Traditional colored APET has a single color and no variability, so it is limited in some application fields, such as temperature display, medical hygiene, advertising, printing In ink and other industries, it is becoming more and more important to develop environmentally friendly materials suitable for such industries. Patent CN108570653 discloses a method for preparing a gradient film composed of materials with different refracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/10C08K5/109C08K5/101C08K5/02
CPCC08K9/10C08K5/109C08K5/101C08K5/02
Inventor 张启纲李沅鸿董冲宋厚春王翔宇
Owner 银金达(上海)新材料有限公司
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