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Hydrolysable ultraviolet curing adhesive and method for preparing same

A technology of curing glue and ultraviolet rays, applied in the direction of adhesives, polyether adhesives, adhesive types, etc., to achieve the effects of easy coating, strong fluidity, and wide application

Inactive Publication Date: 2012-12-05
HB FULLER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is mainly to solve the problem of temporary bonding or covering in the grinding and manufacturing process of glass, crystal, jewelry, optical lens, high-grade crafts, electronic processing and other industries, and to provide such a hydrolyzable ultraviolet curable adhesive, which not only has Good bonding strength, fast curing speed, and after processing, it is easy to hydrolyze and separate the adherend

Method used

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  • Hydrolysable ultraviolet curing adhesive and method for preparing same
  • Hydrolysable ultraviolet curing adhesive and method for preparing same
  • Hydrolysable ultraviolet curing adhesive and method for preparing same

Examples

Experimental program
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Effect test

preparation example Construction

[0015] Preparation of prepolymer A: Weigh 72g of hydroxypropyl methacrylate and put it in a three-necked flask, raise the temperature to 110°C for 2 hours and vacuum dehydrate it, then lower it to 30°C, add 116.6g of 3-isocyanate methylene-3,5 , 5-trimethylcyclohexyl isocyanate (IPDI), heated to 55 degrees to react for 2.5h to obtain polyurethane intermediate prepolymer.

[0016] Weigh 100g of polyethylene glycol dimethacrylate and place it in a three-necked flask, stir and add 200g of polyvinyl alcohol with a molecular weight of 12,000, stir to make it evenly mixed, heat up to 110°C and vacuum dehydrate for 2 hours, then drop to 35°C, add 29g of the intermediate prepolymer was stirred to make it evenly mixed, then added and heated to 75°C for 3.5h reaction to obtain polyvinyl alcohol-modified polyurethane acrylate A.

[0017] Preparation of prepolymer B: Weigh 79.2g of hydroxypropyl methacrylate and put it in a three-necked flask, raise the temperature to 110°C and vacuum deh...

Embodiment 1

[0022] Embodiment 1: prepare the ultraviolet curable adhesive according to the following table proportioning. Take 16g of hydroxyethyl methacrylate and 25g of polyethylene glycol dimethacrylate in a three-necked flask, raise the temperature to 115°C and vacuum dehydrate for 2 hours, cool down to room temperature, add 42g of polyvinyl alcohol modified polyurethane acrylate A, Stir to dissolve 15g of polyurethane acrylate, 4g of photoinitiator 184 and 1g of TPO, and finally add 2g of starch and stir evenly to obtain a polyvinyl alcohol-modified polyurethane acrylate UV-curable adhesive.

[0023]

Embodiment 2

[0024] Embodiment 2: Prepare polyvinyl alcohol-modified polyurethane acrylate UV adhesive according to the ratio in the following table. Preparation method is with embodiment 1.

[0025]

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Abstract

The invention relates to the technical field of ultraviolet curing adhesive, in particular to a hydrolysable ultraviolet curing adhesive and a method for preparing the same. The curing adhesive comprises the following components in part by weight: 30 to 70 parts of prepolymer, 15 to 60 parts of reactive diluent, 0 to 10 parts of coupling agent, 1 to 10 parts of photoinitiator and 0.1 to 2.5 parts of auxiliary agent, wherein the prepolymer has a unique structural formula. The preparation method comprises the following steps of: performing vacuum dehydration on the reactive diluent at the temperature of between 110 and 120 DEG C for 1 to 2 hours; cooling the reactive diluents; adding the prepolymer, the coupling agent and the photoinitiator into the reactive diluents when the temperature is reduced to the room temperature; stirring the mixture for dissolution; and finally adding the auxiliary agent. The ultraviolet curing adhesive is high in fluidity, easy to coat and quick in curing, the curing matters have the characteristics of hardness, crispness and low shrinkage ratio, and the curing adhesive is suitable for mechanical processing; and the curing adhesive is high in water adsorption, susceptible to peptization in water, low in cost and wide in application range. The preparation method is characterized by simple synthetic reaction process, and is easy to operate.

Description

technical field [0001] The invention relates to the technical field of ultraviolet curable adhesives, in particular to a hydrolyzable ultraviolet curable adhesive and a preparation method thereof. Background technique [0002] In the grinding and manufacturing process of glass, crystal, jewelry, optical lenses, high-end handicrafts, electronic processing and other industries, a special adhesive is required, which is easy to coat; fast curing, and the cured product has the properties of hard and brittle and low shrinkage. Good bonding strength, suitable for temporary bonding or covering during mechanical processing such as grinding; after processing, the cured product is highly water-absorbent, and the adhesive film is easily hydrolyzed in water to separate the bonded object; traditional UV-cured adhesive Although the adhesive can have good bonding strength, the adhered object is not easy to separate after processing, or the adhesive film on the object is not easy to remove a...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J171/08
Inventor 翟喜权
Owner HB FULLER CO
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