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Ultraviolet light polymerization adhesive

A technology of adhesives and ultraviolet light, applied in adhesives, modified epoxy resin adhesives, non-polymer adhesive additives, etc., can solve problems such as poor moisture resistance, reduced bonding strength, and reduced bonding strength , to achieve the effect of good moisture resistance, good moisture resistance and high bonding strength

Inactive Publication Date: 2016-01-13
三友(天津)高分子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most UV adhesives on the market have poor moisture resistance, mainly as follows: the initial bonding strength meets the requirements, but with the extension of the bonding time, especially after a period of time in a humid and hot environment, the bonding strength will decrease significantly. decline
This phenomenon is mainly caused by two reasons: (1) The ester bond and imidate bond of the adhesive layer are easily hydrolyzed under high temperature and high humidity conditions; (2) The surface of the substrate contains hydrophilic hydroxyl groups, and moisture and moisture are easily Invade the bonding interface layer to form hand-shaped patterns, replace the bonding effect, and reduce the bonding strength

Method used

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  • Ultraviolet light polymerization adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: Adhesive is made up of the raw material of following parts by weight, listed in the following table:

[0012] polybutadiene dimethacrylate 20 Trifunctional aromatic urethane acrylate 20 Trifunctional epoxy acrylate 10 Propoxylated Trimethylolpropane Triacrylate 50 Irgacure 184 0.5 Irgacure 819 0.5 A-172 silane coupling agent 10

[0013] The viscosity of polybutadiene dimethacrylate at 50°C is 65000cps, the viscosity of trifunctional aromatic urethane acrylate at 50°C is 5200cps, and the viscosity of trifunctional epoxy resin acrylate at 50°C is 2500cps.

[0014] Preparation process: Add the above components into a double planetary power mixer in turn, vacuumize to about -0.1MPa, stir at a speed of 500r / min for 2 hours, then let it air naturally to room temperature, and then discharge and pack. Note that the operation process after adding the initiator should be kept in a dark state.

[0015] How to use: ① ...

Embodiment 2

[0016] Embodiment 2: Adhesive is made up of the raw material of following parts by weight, listed in the following table:

[0017] polybutadiene dimethacrylate 40 Hexafunctional Aromatic Urethane Acrylate 20 Isobornyl Acrylate 20 tetrahydrofuran acrylate 20 TPO 5 CD9051 5 1121 adhesion promoter 5

[0018] The six-functional aromatic urethane acrylate has a viscosity of 1800 cps at 50°C. The preparation process and method of use are the same as in Example 1.

Embodiment 3

[0019] Embodiment 3: Adhesive is made up of the raw material of following parts by weight, listed in the following table:

[0020] polybutadiene dimethacrylate 60 Trifunctional epoxy acrylate 10 dipentaerythritol pentamethacrylate 20 Ethoxylated bisphenol A diacrylate 10 Darocure 1173 2 1121 adhesion promoter 5 Phosphate methacrylate 0.1

[0021] The preparation process and method of use are the same as in Example 1.

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Abstract

The invention discloses ultraviolet light polymerization adhesive. The adhesive is prepared from 20-60 parts of matrix resin, 20-40 parts of auxiliary resin, 20-50 parts of active monomer diluent, 0.5-5 parts of photoinitiators and 0-10 parts of adhesion promoters. The matrix resin is polybutadience dimethacrylate, and the viscosity at the temperature of 50 DEG C ranges from 500 cps to 25000 cps; the auxiliary resin is either or both of aromatic urethane acrylate and epoxy acrylate, and the viscosity at the temperature of 50 DEG C ranges from 500 cps to 50000 cps. The ultraviolet light polymerization adhesive has the advantages of being high in bonding strength, good in toughness, good in dampness resistance and the like, and thereby the problem that an adhesive layer is prone to being hydrolyzed under the condition of high temperature and high humidity is solved; due to the fact that the adhesive is good in dampness resistance, after being immersed in boiling water for two hours, the tensile shearing strength of a bonded workpiece is still above 10 MPa. The adhesive can be widely applied to bonding of materials such as glass, crystals, colored glaze, jewels, plastic and rubber, in particular to bonding of home decoration glass materials.

Description

technical field [0001] The invention relates to an adhesive, in particular to a water-resistant and moisture-resistant ultraviolet (UV) curing adhesive. Background technique [0002] UV curing adhesives have been widely researched and promoted in the field of adhesives due to their advantages of fast curing speed, low energy consumption, and environmental friendliness. In addition, due to its good optical properties, it is often used to bond transparent substrates, such as: glass, crystal, transparent plastic, glass, gemstones and other materials, and it can also be used for fixing and encapsulating electronic products. At present, most UV adhesives on the market have poor moisture resistance, mainly as follows: the initial bonding strength meets the requirements, but with the extension of the bonding time, especially after a period of time in a hot and humid environment, the bonding strength will decrease significantly. decline. This phenomenon is mainly caused by two rea...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J147/00C09J163/10C09J11/06
Inventor 段亚冲吴子刚吴玉昆王永明李程闫静邵凯王晓彤
Owner 三友(天津)高分子技术有限公司
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