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Protective film with heating-reducible adhesion and preparation method thereof

A protective film and adhesive technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of low work efficiency, easy residues on the casing or screen, and manual tearing of protective films. , to achieve the effect of easy operation, simple preparation method and strong adhesion

Inactive Publication Date: 2017-02-22
苏州旭泽新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the protective film has the following problems: 1. After the assembly is completed, the protective film needs to be manually torn off, and the work efficiency is low; 2. After the protective film is removed, residues are likely to appear on the shell or screen of the product, which needs to be cleaned again

Method used

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  • Protective film with heating-reducible adhesion and preparation method thereof
  • Protective film with heating-reducible adhesion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Components of the heating adhesive 2: 20% by weight of polyurethane resin, 10% by weight of MDI blocked isocyanate curing agent, 65% by weight of ketone organic solvent, and 5% by weight of Expandable microsphere foaming agent; wherein, the particle diameter of the self-expanding microsphere in the self-expanding microsphere foaming agent is 15 μm.

[0030] The preparation of heating viscosifying glue 2 comprises the following steps:

[0031] a) Add the ketone organic solvent and self-expanding microsphere foaming agent into the mixing tank for stirring, the stirring speed is 150r / min, and the stirring time is 30min.

[0032] b) adding polyurethane resin into the solution treated in step a), and stirring for 7 minutes.

[0033] c) Add an MDI blocked isocyanate curing agent into the mixing barrel in the solution treated in step b), and stir for 10 minutes, so as to prepare the heat-viscosity-reducing adhesive 2.

[0034] The preparation of the heat-reducing viscosity-r...

Embodiment 2

[0040] The components of the heating viscosifying adhesive 2: 55% by weight of polyester resin, 8% by weight of TDI blocked isocyanate curing agent, 30% by weight of benzene organic solvent, and 7% by weight of A self-expanding microsphere foaming agent; wherein, the particle diameter of the self-expanding microsphere in the self-expanding microsphere foaming agent is 20 μm.

[0041] The preparation of heating viscosifying glue 2 comprises the following steps:

[0042] a) Add benzene organic solvent and self-expanding microsphere foaming agent into the mixing tank for stirring, the stirring speed is 180r / min, and the stirring time is 25min.

[0043] b) adding polyester resin into the solution treated in step a), and stirring for 10 minutes.

[0044] c) Adding TDI blocked isocyanate curing agent into the solution treated in step b), and stirring for 8 minutes, so as to prepare heating viscosifying adhesive 2.

[0045] The preparation of the heat-reducing viscosity-reducing pr...

Embodiment 3

[0051] Components of the heating adhesive 2: 90% by weight of acrylic resin, 0.1% by weight of IPDI isocyanurate curing agent, 9% by weight of deionized water, and 0.9% by weight of A self-expanding microsphere foaming agent; wherein, the particle diameter of the self-expanding microsphere in the self-expanding microsphere foaming agent is 25 μm.

[0052] The preparation of heating viscosifying glue 2 comprises the following steps:

[0053] a) Add benzene organic solvent and self-expanding microsphere foaming agent into the mixing tank for stirring, the stirring speed is 200r / min, and the stirring time is 30min.

[0054] b) adding acrylic resin into the solution treated in step a), and stirring for 10 minutes.

[0055]c) Adding IPDI isocyanurate curing agent into the solution treated in step b), and stirring for 5 minutes, so as to prepare the heat-viscosity-reducing adhesive 2.

[0056] The preparation of the heat-reducing viscosity-reducing protective film comprises the fo...

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Abstract

The invention discloses a protective film with heating-reducible adhesion, comprising a PET (polyethylene terephthalate) base material and heating-reducible adhesion glue applied to the surface of the PET base material; the heating-reducible adhesion glue is made from, by weight, 20-90% of resin, 0.01-15% of a curing agent, 9-90% of a solvent and 0.1-10% of self-expanded microsphere foaming agent. The heating-reducible adhesion glue has high adhesive power, and can automatically peel off after being heated to 160 DEG C with no residue left. The protective film with heating-reducible adhesion is prepared in the steps of 1) cleaning and drying the surface of the PET base material; 2) subjecting the surface of the PET base material treated in step 1) to corona treatment; 3) preparing the heating-reducible adhesion glue; 4) applying the heating-reducible adhesion glue prepared in step 3) evenly to the surface of the PET base material subjected to corona treatment, and drying to obtain the protective film with heating-reducible adhesion. The preparation method of the protective film with heating-reducible adhesion is simple and easy to perform.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a heating and viscosity-reducing protective film and a preparation method thereof. Background technique [0002] In the process of producing and assembling mobile phones, LCD screens and other products, in order to protect the products from damage or pollution during transportation, assembly or processing, a protective film is usually used to cover the shell or screen of the product. After the assembly is completed, Tear off the protective film manually. [0003] In the prior art, the surface of the general protective film is coated with an adhesive, so that the contact surface (ie, the adhesive surface) between the protective film and the shell or screen of the product has a certain viscosity, so that the protective film can be stably attached to the screen. However, the protective film has the following problems: 1. After the assembly is completed, the protective film...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J175/04C09J167/00C09J133/00
CPCC09J7/255C09J133/00C09J167/00C09J175/04C09J2301/122C09J2301/30
Inventor 金国华朱霆
Owner 苏州旭泽新材料科技有限公司
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