A kind of transparent, high hardness, anti-yellowing epoxy jewelry glue and its preparation process

A high-hardness, anti-yellowing technology, applied in epoxy resin adhesives, adhesives, polymer adhesive additives, etc., can solve the problems of insufficient curing agent performance, difficult procurement, high price, etc., and achieve excellent anti-yellowing performance , low cost and long operation time

Active Publication Date: 2016-04-20
HUBEI GREENHOME MATERIALS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation process of epoxy jewelry glue to solve the technical problems of insufficient performance of the existing curing agent, high price, and difficulty in purchasing.

Method used

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  • A kind of transparent, high hardness, anti-yellowing epoxy jewelry glue and its preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Preparation of glue A: 70 parts ("part" is the weight ratio unit, which means any unit weight. For example, each part = 100 grams, 1 kilogram or 100 kilograms, etc., the same below) epoxy resin 127, 28 parts of benzyl alcohol and 2 parts of polymethyl methacrylate and 1 part of nano-titanium dioxide are poured into a blending kettle and stirred for 10-15 minutes to prepare; among them, nano-titanium dioxide is first mixed with benzyl alcohol, stirred vigorously, heated to 70°C with microwave, and then oscillated by ultrasonic wave for 3- After 5 minutes, add to the blender.

[0016] Synthesis of glue B: Add 78 parts of diethylenetriamine and 4 parts of 1,3-cyclohexanedimethylamine into the reactor, start stirring, raise the temperature to 57°C, and add 125 parts of n-butyl glycidol dropwise within 2 hours Ether, 28 parts of phenyl glycidyl ether and 15 parts of benzyl alcohol, the reaction temperature is controlled between 60 ~ 65 ° C, after the dropwise addition, conti...

Embodiment 2

[0019] Preparation of glue A: 1. Pour 75 parts of epoxy resin 127, 23 parts of benzyl alcohol and 1.5 parts of polymethyl methacrylate, 0.5 parts of nano-titanium dioxide into the mixing tank and stir for 10-15 minutes to prepare. Among them, the nano-titanium dioxide is first mixed with benzyl alcohol, stirred vigorously, and heated to 70°C by microwave, then oscillated by ultrasonic waves for 3-5 minutes, and then added to the blending kettle.

[0020] Synthesis of glue B: Add 50 parts of diethylenetriamine and 5 parts of 1,3-cyclohexanedimethylamine into the reactor, then raise the temperature to 57°C, add 125 parts of n-butyl glycidyl ether, For the mixed solution of 50 parts of phenyl glycidyl ether and 20 parts of benzyl alcohol, control the reaction temperature between 60-65°C. After the dropwise addition, continue to keep warm for 3 hours, and use infrared spectrometer to determine the reaction end point.

[0021] Preparation of epoxy jewelry glue: 40 parts of A glue, ...

Embodiment 3

[0023] Preparation of glue A: Pour 90 parts of epoxy resin 127, 9.9 parts of benzyl alcohol and 2 parts of polymethyl methacrylate, 0.5 parts of nano-titanium dioxide into the mixing tank and stir for 10-15 minutes to prepare. Among them, the nano-titanium dioxide is first mixed with benzyl alcohol, stirred vigorously, and heated to 70°C by microwave, then oscillated by ultrasonic waves for 3-5 minutes, and then added to the blending kettle.

[0024] Synthesis of glue B: Add 100 parts of diethylenetriamine and 2.5 parts of 1,3-cyclohexanedimethylamine into the reaction kettle, then raise the temperature to 57°C, add 100 parts of n-butyl glycidyl ether dropwise within 2 hours, The mixture of 27.5 parts of phenyl glycidyl ether and 20 parts of benzyl alcohol is controlled at a reaction temperature between 70 and 75°C. After the dropwise addition is completed, the temperature is kept for 3 hours, and the end point of the reaction is determined by an infrared spectrometer.

[0025...

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Abstract

The invention discloses a transparent, high-hardness, anti-yellowing epoxy adhesive for ornaments and a preparation process thereof, which provides a new formula of epoxy resin components and curing agent components. The epoxy resin component is marked as glue A, and the curing agent component is marked as glue B. A glue is prepared with epoxy resin 127, benzyl alcohol, polymethyl methacrylate and nano-titanium dioxide, and B glue is made of diethylenetriamine, n-butyl glycidyl ether, phenyl glycidyl ether, 1,3-cyclohexane di Methylamine and benzyl alcohol are used as raw materials to synthesize epoxy jewelry glue curing agent at a certain temperature. Mix glue A and glue B evenly in a certain proportion, then defoam with vacuum, use silica gel as a mold, heat and cure, first cure at low temperature, and then heat up and cure after reaching a certain degree of curing. The obtained cured product has a colorless and transparent appearance, a flat and smooth surface, a Shore hardness of more than 84, excellent yellowing resistance and long operating time. The method has easy-to-obtain raw materials, simple process, low cost, easy industrialization, and can replace the general formula of epoxy jewelry glue on the market.

Description

technical field [0001] The invention relates to a formula of epoxy jewelry glue. In particular, it relates to a transparent, high-hardness, anti-yellowing epoxy adhesive for ornaments and a preparation process thereof. Background technique [0002] Epoxy resin jewelry glue is made of epoxy resin component and curing agent component, the epoxy resin component is recorded as glue A, and the curing agent component is recorded as glue B. Glue A is prepared with epoxy resin 128 and benzyl alcohol, glue B is 593 curing agent, 40 parts of glue A, and then add 20 parts of glue B, mix well, defoam under vacuum, and then pack it into a silicone mold, first in Cured at 60°C for 30min, then continued to cure at 90°C for 1h. After cooling, the Shore hardness of the obtained cured product is below 70, the yellowing resistance is poor, and it turns yellow in less than one month, and the operation time is short, which cannot meet the performance requirements. [0003] Although the perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J11/04C09J11/08C09J11/06C08G59/50
Inventor 杨华胡登华肖华青黄圣
Owner HUBEI GREENHOME MATERIALS TECH INC
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