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Double-component aluminum metal anti-corrosion repairing agent and preparation method thereof

A repair agent, two-component technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of poor acid and alkali resistance, low cohesive strength, damaged bonding effect, etc., and achieve excellent high temperature resistance , good water resistance, and the effect of improving the bonding effect

Inactive Publication Date: 2015-07-29
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although traditional inorganic adhesives used for high-temperature bonding have good high-temperature resistance, they have defects such as low cohesive strength, high brittleness, poor water resistance, and poor acid and alkali resistance. For example, the ceramic adhesive disclosed in patent application CN1253156A is resistant to The temperature is good, but the material is prone to expansion at high temperature. When bonding materials with a large difference in line expansion coefficient, a large thermal stress will be generated on the adhesive layer and the bonding interface, which will damage the bonding effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Repairing agent preparation of the present invention and use process are as follows:

[0021] (1) Preparation of reinforcing filler (modified attapulgite / nano silica composite powder):

[0022] (a) Weigh 100g of attapulgite clay with a fineness of 200-400 mesh, put it into 800-1000ml of distilled water, and treat it with 50-100ml of hydrochloric acid with a concentration of 1mol / L at 80-100°C for 1-3 hours while stirring 2 to 4 hours to prepare the suspension;

[0023] (b) Add 5-10 mL of composite active agent to the suspension, add 15 g of nano-silicon oxide, add NaOH solution dropwise to adjust the pH of the suspension to 6-8, and then stir for 2-4 hours to prepare the suspension;

[0024] (c) Centrifuge the suspension at a speed of 3500r / min for 5-10 minutes, dry the recovered solids, and grind them finely to obtain the modified attapulgite powder.

[0025] (2) Take 30g of tetrahydrofuran and pour it into a stirrer, add 20g of E14 type bisphenol A epoxy resin to it...

Embodiment 2

[0032] Repairing agent preparation of the present invention and use process are as follows:

[0033] (1) Preparation of reinforcing filler (modified attapulgite / nano silica composite powder):

[0034] (a) Weigh 100g of attapulgite clay with a fineness of 200-400 mesh, put it into 800-1000ml of distilled water, and treat it with 50-100ml of hydrochloric acid with a concentration of 1mol / L at 80-100°C for 1-3 hours while stirring 2 to 4 hours to prepare the suspension;

[0035] (b) Add 5-10 mL of composite active agent to the suspension, add 15 g of nano-silicon oxide, add NaOH solution dropwise to adjust the pH of the suspension to 6-8, and then stir for 2-4 hours to prepare the suspension;

[0036] (c) Centrifuge the suspension at a speed of 3500r / min for 5-10 minutes, dry the recovered solids, and grind them finely to obtain the modified attapulgite powder.

[0037] (2) Take 30g of tetrahydrofuran and pour it into a stirrer, add 25g of E14 type bisphenol A epoxy resin to it...

Embodiment 3

[0044] Repairing agent preparation of the present invention and use process are as follows:

[0045] (1) Prepare the reinforcing filler according to the method of Example 1.

[0046] (2) Take 35g of tetrahydrofuran and pour it into a stirrer, add 20g of E44 type bisphenol A epoxy resin to it, stir fully with a cross blade stirrer, the stirring speed is 3000 rpm, and the stirring time is 60 minutes;

[0047] (3) Put 22g of modified attapulgite clay powder, 6g of nano-zirconia, 6g of Tween 20 active agent and 0.5g of defoamer for epoxy resin into the mixing system of step (1), and stir well, The stirring time is 2 hours, and the stirred slurry is vacuum defoamed to make component A for use;

[0048] (4) Put 15g of linear polyamine polyamide resin, 15g of methyltriethoxysilane and 3g of alkylethylenediamine into a cross-blade stirrer and stir fully at a stirring speed of 3000 rpm, stirring Time is 60 minutes, make component B, stand-by;

[0049] (5) Soak the aluminum metal par...

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PUM

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Abstract

The invention discloses a double-component aluminum metal anti-corrosion repairing agent and a preparation method thereof. The repairing agent comprises the following components in parts by weight: 20 to 25 parts of epoxy resin, 10 to 15 parts of curing agent, 18 to 23 parts of reinforced stuffing, 10 to 15 parts of coupling agent, 5 to 8 parts of micro powder, 3 to 6 parts of active agent, 1 to 3 parts of tackifier, 0.1 to 0.5 part of defoaming agent and 30 to 35 parts of thinning agent. A membrane layer formed by the repairing agent on the surface of an aluminum base material can resist the high temperature of 700 DEG C and has no phenomenon of obvious stripping, burring and the like. The double-component aluminum metal anti-corrosion repairing agent is excellent in water resistance, alkali and acid resistance and weather resistance.

Description

technical field [0001] The invention relates to an aluminum metal repairing agent. Background technique [0002] Some aluminum alloy equipment that needs to work under high temperature conditions, such as aluminum alloy fan blades, aluminum alloy quenching furnaces, etc., generally need a repair agent to repair when they are damaged or broken. The key technology of bonding is a two-component (or multi-component) cement-like composite material composed of high molecular polymer, metal powder, ceramic powder and fiber, which is widely used in wear-resistant, corrosion-resistant repair and pre-treatment of parts. Protective coating and used to repair various defects of parts (such as cracks, scratches, dimensional tolerances, casting pores, sand holes) and sealing plugging, etc. The process is simple and easy, just mix the two components in proportion, It is applied on the surface that has been derusted and degreased, and can be repaired after curing. It is a labor-saving,...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/04C09J11/06C09J11/08
Inventor 姚义俊万韬隃刘斌王涛张乐彬温晓霞张雯雯
Owner NANJING UNIV OF INFORMATION SCI & TECH
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