A kind of preparation method of PET-based heat-absorbing film

A heat-absorbing and near-infrared absorber technology, applied in the direction of radiation-absorbing coatings, coatings, etc., can solve the problems of poor weather resistance and heat resistance, lack of UV resistance, poor anti-shedding resistance, etc., to improve temperature resistance. and weather resistance, thermal stability and flexibility, high strength and heat resistance effect

Active Publication Date: 2022-03-18
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adhesives generally have shortcomings such as low yield, low production efficiency, poor weather resistance and heat resistance, poor peeling resistance, and low peel strength; the use of the above adhesives will also increase the preparation cost; under long-term high temperature conditions, it is easy to produce yellowing phenomenon ; In addition, the existing color-coated metal sheets have relatively single functions, poor heat absorption and heat preservation performance, and are not anti-ultraviolet, which limits the diversified development of color-coated metal sheets

Method used

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  • A kind of preparation method of PET-based heat-absorbing film
  • A kind of preparation method of PET-based heat-absorbing film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The specific steps of the preparation method of the PET-based heat-absorbing film are as follows:

[0025] (1) Modification of PET film

[0026] Pass the PET film with a particle size of 4nm nanometer SiO 2 Particle modification to obtain modified PET film;

[0027] (2) Preparation of polymer membrane

[0028] (a) Film preparation material: prepare a polyvinyl alcohol solution with a mass fraction of 10% and add it to the reactor, add maleic anhydride and initiator to the reactor, add styrene, tackifier rosin resin and near-infrared Absorbent polypyrrole, under nitrogen atmosphere stirring conditions, reaction temperature 60 ° C, reaction time 4.5h, to obtain a film preparation solution, the film preparation solution is placed in a vacuum oven, dried to obtain a film preparation material; wherein, the The mass ratio of maleic anhydride, styrene, polyvinyl alcohol solution, initiator, tackifier and near-infrared absorber is 1:1.06:2.3:0.003:0.009:0.25;

[0029] (b) P...

Embodiment 2

[0032] The specific steps of the preparation method of the PET-based heat-absorbing film are as follows:

[0033] (1) Modification of PET film

[0034] Pass the PET film with a particle size of 8nm nanometer SiO 2 Particle modification to obtain modified PET film;

[0035] (2) Preparation of polymer membrane

[0036] (a) Membrane preparation material: prepare a polyvinyl alcohol solution with a mass fraction of 12% and add it to the reactor, add maleic anhydride and initiator to the reactor, and then add styrene, tackifier rosin resin and near-infrared Absorbent polypyrrole, under nitrogen atmosphere stirring conditions, reaction temperature 50 ° C, reaction time 6h, to obtain a film preparation solution, the film preparation solution is placed in a vacuum oven, and dried to obtain a film preparation material; wherein, the horse The mass ratio of anhydride, styrene, polyvinyl alcohol solution, initiator, tackifier and near-infrared absorber is 1:1.05:2.2:0.004:0.007:0.22; ...

Embodiment 3

[0040] The specific steps of the preparation method of the PET-based heat-absorbing film are as follows:

[0041] (1) Modification of PET film

[0042] Pass the PET film with a particle size of 16nm nanometer SiO 2 Particle modification to obtain modified PET film;

[0043] (2) Preparation of polymer membrane

[0044] (a) film preparation material: the preparation mass fraction is that the polyvinyl alcohol solution of 14% is added in the reactor, and maleic anhydride, initiator are added in the reactor, add styrene, tackifier terpene resin and nearly Infrared absorbing agent polypyrrole, under nitrogen atmosphere stirring condition, reaction temperature 65 ℃, reaction time 8h, obtain film preparation solution, put the film preparation solution in a vacuum oven, dry to obtain film preparation material; wherein, the The mass ratio of maleic anhydride, styrene, polyvinyl alcohol solution, initiator, tackifier and near-infrared absorber is 1:1.07:2.5:0.005:0.008:0.18;

[0045...

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Abstract

A method for preparing a PET-based heat-absorbing film. The heat-absorbing film includes a polymer film and a modified PET film that are closely bonded by thermal compression. The specific steps of the preparation method are as follows: (1) modification of the PET film; (2) ) Preparation of polymer film (a) Add polyvinyl alcohol solution, maleic anhydride and initiator to the reaction kettle, add styrene, tackifier and near-infrared absorber after dissolving, stir and react in nitrogen atmosphere to obtain film preparation solution , and dry to obtain the film preparation material; (b) dissolve the film preparation material in the casting film solution to form a coating solution, apply the coating solution on the substrate and dry to form a polymer film; use a polymer film layer to replace the traditional The adhesive base layer improves the temperature resistance and weather resistance of the polymer film layer, has good thermal stability and flexibility, and can maintain a high adhesive force at a higher temperature without falling off; in the polymer film preparation material The near-infrared absorber is added to make the polymer film have the functions of heat preservation, heat insulation and ultraviolet protection, which enriches the functions of the polymer film.

Description

technical field [0001] The invention relates to the technical field of protective films compounded on building materials, and more specifically relates to a preparation method of a PET-based heat-absorbing film. Background technique [0002] Since the 21st century, due to the substantial increase in the total consumption of natural resources such as oil and coal, this will further aggravate environmental pollution and the depletion of non-renewable energy sources. Therefore, at present and in the future, how to maximize the utilization of recyclable renewable clean energy such as solar energy and geothermal energy has become one of the most important research directions at present. [0003] In recent years, color-coated metal panels have developed rapidly at home and abroad due to their excellent thermal insulation effects on solar energy, geothermal energy and other thermal energy, and can decorate and beautify buildings. Aluminum panels are the most commonly used metal pan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/043C08J7/04C08J5/18C08L67/02C08K3/36C09D135/06C09D5/32C09D7/65C09D7/63C08F212/08C08F222/08
CPCC08J7/0427C08J5/18C09D135/06C09D5/32C09D7/65C09D7/63C08F212/08C08J2367/02C08K3/36C08K2201/011C08J2435/06C08L2205/035C08L93/04C08L79/04C08L29/04C08K5/20C08F222/08
Inventor 王以琳王贤中刘保奎江洪祥黄小宁
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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