PET (Polyethylene Terephthalate) protection film and preparation method thereof

A protective film and protective layer technology, applied in the direction of film/sheet adhesive, adhesive type, adhesive, etc., can solve the problems of difficult industrial production, large investment in equipment cost, and many composite layers, etc., to achieve Long service life, improved overall performance, and good transparency

Active Publication Date: 2018-11-09
NINGBO KELAIEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is composed of transparent protective film, low-viscosity removable sensitive adhesive, transparent acrylic film, metal deposition layer, high temperature resistant pressure sensitive adhesive and PET release film. The film has the characteristics of outdoor weather resistance and good light transmission effect. However, its composite The number of layers is large, the cost of equipment is large, and the process is complicated, so it is difficult to apply to industrial production

Method used

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  • PET (Polyethylene Terephthalate) protection film and preparation method thereof

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preparation example Construction

[0024] Correspondingly, the present invention also provides a preparation method of the PET protective film described in the above technical solution, comprising the following steps: coating the low-viscosity film on the corona-treated PET film, and drying it in an oven at 90°C , cool down, and attach a protective layer on the side coated with low-viscosity glue to obtain a PET protective film. It consists of parts by weight of functional monomer, 0.2-2 parts by weight of emulsifier, 0.5-3 parts by weight of initiator and 50-80 parts by weight of deionized water. The initiator is 1-methyl-3-peroxybenzyl Acyl imidazolium bromide salt ionic liquid.

[0025] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0026] (1) PET protective film of the present invention is made up of PET substrate layer, low-viscosity intermediate layer and protective layer, and its preparation process is simple, easy to operate, and is suitable fo...

Embodiment 1

[0034] The preparation method of initiator is as follows:

[0035]Add 1-methylimidazolium bromide, benzoyl chloride and sodium bicarbonate to hydrogen peroxide, wherein the molar ratio of N-methylimidazolium bromide, benzoyl chloride, sodium bicarbonate and hydrogen peroxide is 1:1:0.2:2 , stirred at 50° C. for 12 hours at 500 r / min, and vacuum-dried at 80° C. for 24 hours to obtain an initiator, which is ready for use.

[0036] The low-viscosity intermediate layer is formed by low-viscosity glue, and the low-viscosity glue is made of 100 parts by weight of viscosity monomer ethyl acrylate, 30 parts by weight of internal polymer monomer methyl acrylate, and 10 parts by weight of functional monomer (meth)glycidyl acrylate , 2 parts by weight of emulsifier SDS, 0.5 parts by weight of initiator and 80 parts by weight of deionized water, the specific preparation method is as follows:

[0037] (4) Stir the viscous monomer, internal polymer monomer and functional monomer at room te...

Embodiment 2

[0042] The preparation method of initiator is as follows:

[0043] Add 1-methylimidazolium bromide, benzoyl chloride and sodium bicarbonate to hydrogen peroxide, wherein the molar ratio of N-methylimidazolium bromide, benzoyl chloride, sodium bicarbonate and hydrogen peroxide is 1:1:0.25:3 , stirred at 80° C. for 6 hours at 1000 r / min, and vacuum-dried at 80° C. for 24 hours to obtain an initiator, which was set aside.

[0044] The low-viscosity middle layer is formed by low-viscosity glue, which consists of 100 parts by weight of viscous monomer butyl acrylate, 20 parts by weight of internal polymer monomer styrene, and 8 parts by weight of functional monomer N-methylolacrylamide acrylamide , 1 weight part of emulsifier SDBS, 2 weight parts of initiator and 50 weight parts of deionized water, the specific preparation method is as follows:

[0045] (7) Stir the viscous monomer, internal polymer monomer and functional monomer at room temperature for 0.5 h at 1000 r / min to obta...

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Abstract

The invention provides a PET (Polyethylene Terephthalate) protection film and a preparation method thereof. The PET protection film is prepared from a PET base material layer, a low-viscous middle layer and a protection layer; the preparation process is simple and easy to operate. A 1-methyl-3-benzoyl peroxide imidazole bromine ionic liquid is used as an initiator and is the green and environmental-friendly ionic liquid, the polymerization reaction rate is controlled, and a molecular chain is further crosslinked, so that the viscosity of a low-viscosity middle layer can be effectively reduced,and high-temperature resistance is also improved; in addition, the 1-methyl-3-benzoyl peroxide imidazole bromine ionic liquid and an emulgator have a better synergistic effect, so that the stabilityof a polymer emulsion is improved, and the combination property of the PET protection film is improved. Therefore, the PET protection film prepared by the invention has the characteristics of long service life, environmental protection, good transparency, low viscosity, good high temperature resistance and excellent mechanical property.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a PET protective film and a preparation method thereof. Background technique [0002] With the development of society and the improvement of people's needs, protective films have penetrated into all walks of life, such as instruments, meters, electronics, machinery, construction, automobile manufacturing and signage industries. The application of protective films not only improves the appearance quality of products , It facilitates material processing, improves the utilization rate of materials, and reduces the production cost of products. [0003] In the Chinese invention patent with application number 201310059013.1, a PVC low-viscosity self-adhesive electrostatic protective film is introduced, which is composed of the first and third base material layers PVC resin self-adhesive layer and the second base material layer PVC resin film layer. The protective film has ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/30C09J7/25C09J133/08C08F220/18C08F220/14C08F220/32
CPCC08F220/18C09J133/068C09J2433/00C09J2467/006C09J7/25C09J7/30C08F220/14C08F220/325
Inventor 吴卓慧
Owner NINGBO KELAIEN NEW MATERIAL TECH CO LTD
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