Single-component thread locking epoxy precoated adhesive and preparation method thereof

A locking ring, single-component technology, applied in the direction of epoxy resin glue, chemical instruments and methods, novolac epoxy resin adhesive, etc., can solve the problem of low efficiency of thread locking glue, harsh curing conditions, pollution Workpieces and other problems, to achieve the effect of less restrictions on curing conditions, good locking performance, high breaking torque and average disassembly torque

Inactive Publication Date: 2010-03-10
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention mainly solves the problems of low efficiency of existing thread locking adhesives, contamination of workpieces, relatively harsh curing conditions, poor water resistance, and environmental pollution.

Method used

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  • Single-component thread locking epoxy precoated adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, at first, add gum arabic 3g and distilled water 15g in the 500ml there-necked flask that is equipped with stirrer, stir and be warming up to 50 ℃, after gum arabic dissolves completely, add bisphenol A type epoxy resin (E- 44) 40g and active diluent butyl glycidyl ether 10g, increase the speed to 2000rpm, disperse the solution into 50-200μm droplets, cool down to 40-50℃, slowly add 5g of pre-mixed urea, A mixed solution of 7 g of resorcinol, 20 g of 37% formaldehyde solution, and 25 g of distilled water, 10 minutes after the addition, add 15 g of 10% hydrochloric acid solution, keep the temperature, continue stirring for 8 h, and adjust the temperature of the system with 10% sodium hydroxide solution. When the pH value reaches 4-5, continue to stir for 30 minutes, stop heating and stirring, let stand for 30 minutes, remove the floating matter above, rinse 5 times with distilled water, vacuum filter, and dry to obtain epoxy resin capsules;

[0032] Add 2g o...

Embodiment 2

[0034] Embodiment 2, first add gum arabic 9g and distilled water 30g in the there-necked flask of 500ml that is equipped with stirrer, stir and be warming up to 85 ℃, after gum arabic dissolves completely, add bisphenol A type epoxy resin (E-44 ) 70g and active diluent butyl glycidyl ether 80g, increase the rotation speed to 2000rpm, disperse the solution into 50-200μm droplets, cool down to 40-50℃, slowly add 13g of pre-mixed urea, A mixed solution of 21g of hydroquinone, 38g of 37% formaldehyde solution, and 70g of distilled water, 10 minutes after the addition, add 10% hydrochloric acid solution to adjust the pH to 2-3, keep this temperature, continue to stir for 8 hours, and use 10% sodium hydroxide The solution adjusted the pH value of the system to 4-5, continued to stir for 30 minutes, stopped heating and stirring, stood for 30 minutes, removed the floating matter above, rinsed 5 times with distilled water, vacuum filtered, and dried to obtain epoxy resin capsules;

[0...

Embodiment 3

[0037] Embodiment 3, first add gum arabic 7g and distilled water 22g in the there-necked flask of 500ml that is equipped with stirrer, stir and be warming up to 60 ℃, after gum arabic dissolves completely, add bisphenol A type epoxy resin (E-44 ) 55g and active diluent butyl glycidyl ether 45g, increase the speed to 2000rpm, disperse the solution into 50-200μm droplets, cool down to 40-50℃, slowly add 10g of pre-mixed urea, A mixed solution of quinone 15g, 37% formaldehyde solution 29g, distilled water 45g, 10min after adding, add 10% hydrochloric acid solution to adjust the pH to 2-3, keep this temperature, continue to stir for 8h, use 10% sodium hydroxide The solution adjusted the pH value of the system to 4-5, continued to stir for 30 minutes, stopped heating and stirring, stood for 30 minutes, removed the floating matter above, rinsed 5 times with distilled water, vacuum filtered, and dried to obtain epoxy resin capsules;

[0038] Then add 3 g of gum arabic and 18 g of dis...

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Abstract

The invention discloses a single-component thread locking epoxy precoated adhesive which is characterized by being prepared from the following components in proportion by weight: 40-70 parts of epoxyresin, 10-80 parts of activated thinner, 20-60 parts of epoxy hardener, 8-20 parts of urea, 30-60 parts of formaldehyde solution, 10-30 parts of hydroxyphenol, 0.5-5 parts of stuffing, 5-15 parts of surfactant, 80-200 parts of distilled water, 0.5-2 parts of membrane material, 0.1-1 part of hydrolysis inhibitor and 5-10 parts of solvent; and a preparation method comprises the steps: firstly, respectively microencapsulating the epoxy resin and the epoxy hardener are and then uniformly mixing with other components in proportion. The single-component thread locking epoxy precoated adhesive has the characteristics of convenient construction, applicable workpiece material diversification, less curing condition restriction, good moisture resistance and high destabilizing moment and average disassembly moment, ensures the locking performance and better guarantees the safe reliability of products.

Description

Technical field: [0001] The invention relates to the technical field of adhesives, in particular to a single-component epoxy pre-coating glue and a preparation method thereof, which are suitable for thread locking. Background technique: [0002] As we all know, screws have a wide range of applications, but they are often loosened due to shock, vibration and other reasons. The loosening and falling off of a small screw may cause major accidents. In order to prevent accidents, people have started to develop thread locking adhesives to prevent screw loosening. At present, the thread locking adhesives used in the market are mainly anaerobic adhesives, which have many shortcomings, mainly reflected in: (1) Some anaerobic adhesives are liquid, which can only be applied and used immediately, which affects work efficiency and is squeezed out by screws The part of the glue cannot be cured, which will pollute the workpiece and affect the product quality; (2) Although some can be pre-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J163/02C09J163/04C09J11/06C09J11/08C09K3/10
Inventor 林春霞王建斌解海华
Owner YANTAI DARBOND TECH
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