Plasticizer-precipitation-preventing UV viscosity-reducing adhesive tape and preparation method thereof

A plasticizer and tape technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of unstable antistatic layer processing, poor heat resistance of PVC, easy precipitation of plasticizers, etc., to increase curing. Crosslinking density, good antistatic effect, low surface resistance effect

Inactive Publication Date: 2020-03-24
SUZHOU HI TECH ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional antistatic treatment is generally divided into external coating type and internal mixing type. External coating antistatic agent refers to a type of antistatic agent used on the surface of polymer materials. At present, UV adhesive tapes are widely used in PVC-based However, there is a problem that the plasticizer is easy to precipitate, which makes it unstable to directly treat the antistatic layer on its surface; at the same time, PVC itself has poor heat resistance, and wrinkling and deformation will occur when the temperature reaches 60°C, so it cannot be used. Surface treatment of PVC by ordinary heat curing

Method used

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  • Plasticizer-precipitation-preventing UV viscosity-reducing adhesive tape and preparation method thereof
  • Plasticizer-precipitation-preventing UV viscosity-reducing adhesive tape and preparation method thereof
  • Plasticizer-precipitation-preventing UV viscosity-reducing adhesive tape and preparation method thereof

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preparation example Construction

[0039] On the other hand, the invention discloses a method for preparing an anti-plasticizer precipitation UV adhesive tape, comprising the following steps:

[0040] (1) Mix acrylic pressure-sensitive adhesive resin, crosslinking agent, photoinitiator, antistatic agent, and auxiliary agent in sequence, and stir for a preset time to obtain an anti-plasticizer precipitation UV vis-reducing adhesive;

[0041] (2) Coating the anti-plasticizer precipitation UV viscosity-reducing adhesive on the non-release surface of the release film, and drying at 125° C. for 10 minutes;

[0042](3) Pass the base film through a polyurethane surface treatment liquid, and then use it for surface treatment by nano-scale spraying;

[0043] (4) After the non-release surface is dried, the release film coated with UV adhesive reducing agent is transferred to the base film surface, and aged at 50°C for 48-72h to obtain the anti-plasticizer The precipitated high initial adhesion is then peeled off the UV ...

Embodiment 1

[0048]

[0049] Before UV irradiation, the 180° peel force of the antistatic UV adhesive layer is N / 25mm, and after UV irradiation, the 180° peel force of the antistatic UV adhesive layer is N / 25mm.

[0050] The special acrylic pressure-sensitive adhesive resin is solvent-based, its initial 180° peeling force is N / 25mm, and its solid content is 27%.

[0051] The curing agent is a polyisocyanate curing agent, the photoinitiator is 1-hydroxy-cyclohexylbenzophenone, and the antistatic agent is an organic lithium salt antistatic agent.

[0052] The preparation method of the high initial adhesion peeling tape of described antistatic type UV visbreaking comprises the following steps:

[0053] (1) Mix special acrylic pressure-sensitive adhesive resin, curing agent, photoinitiator and antistatic agent in sequence, and stir for a certain period of time to obtain UV viscous adhesive;

[0054] (2) Coating the UV viscous reducing adhesive on the non-release surface of the release film...

Embodiment 2

[0058]

[0059] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a plasticizer-precipitation-preventing UV viscosity-reducing adhesive tape. The adhesive tape comprises a release film, a plasticizer-precipitation-preventing UV viscosity-reducing adhesive layer and a base film which are sequentially arranged. The plasticizer-precipitation-preventing UV viscosity-reducing adhesive layer comprises acrylate pressure-sensitive adhesive resin,a cross-linking agent, a photoinitiator, an antistatic agent, a surface tension reducing aid and a solvent. The acrylate pressure-sensitive adhesive resin comprises a polyfunctional oligomer or a polyfunctional monomer or a composition thereof and a polyacrylate pressure-sensitive adhesive. The surface tension reducing aid comprises polyether modified polydimethylsiloxane of an acrylate functional group. The curing cross-linking density of the glue is increased, the surface tension of the coating is reduced, the precipitation of the plasticizer can be effectively controlled, and the plasticizer is prevented from permeating into the glue layer.

Description

technical field [0001] The invention belongs to the field of adhesive tapes, and in particular relates to an anti-plasticizer precipitation UV adhesive tape and a preparation method thereof. Background technique [0002] With the rapid development of adhesives, UV-viscosity-reducing adhesives have been widely used in wafer cutting, semiconductor chips, etc. Processing procedures such as glass substrate grinding and cutting, semiconductor packaging, etc. are widely used. [0003] Not only is the product required to have a high peeling force before UV irradiation, but the peeling force is significantly reduced after irradiation; at the same time, the tape needs to be peeled off from the adhesive after processing, but static electricity will inevitably occur during this process , leading to a decline in product yield, and even damage to the machine or accidental risks to the operator. Therefore, it is particularly important to develop a UV visbreaking adhesive with antistatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J7/40C09J7/50C09J7/24C09J133/04C09J175/14C09J167/06C09J163/10C09J11/08
CPCC08L2201/04C09J11/08C09J133/04C09J163/10C09J167/06C09J175/14C09J2203/326C09J2427/006C09J2467/005C09J7/245C09J7/385C09J7/40C09J7/50C09J2301/122C09J2301/30C09J2301/302C09J2301/408C08L83/12C08L75/14C08L63/10C08L67/06
Inventor 尹万安
Owner SUZHOU HI TECH ELECTRONICS CO LTD
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