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Preparation method of high-temperature adhesive suitable for TC4 titanium-base alloy

A titanium-based alloy and high-temperature adhesive technology, which is applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve problems such as limiting the application of adhesive bonding technology, and achieve low decomposition shrinkage, high bonding strength, and bonding interface. continuous and tight effect

Active Publication Date: 2019-12-20
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, currently commercially available high-temperature adhesives suitable for titanium alloys are mostly polymeric polymer products. Due to the limit of temperature resistance, their service temperature is usually not higher than 450°C, so it is difficult to meet the needs of higher ambient temperatures. For example, the short-term high temperature of 800°C to 1000°C greatly limits the application of bonding technology in the connection and repair of TC4 titanium-based alloys

Method used

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  • Preparation method of high-temperature adhesive suitable for TC4 titanium-base alloy
  • Preparation method of high-temperature adhesive suitable for TC4 titanium-base alloy
  • Preparation method of high-temperature adhesive suitable for TC4 titanium-base alloy

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Experimental program
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Effect test

Embodiment 1

[0031] The method for preparing a high-temperature adhesive suitable for TC4 titanium-based alloys provided in this example includes the following steps in order:

[0032] (1) Mix liquid phenolic resin and isopropanol according to a weight ratio of 2:1, and mechanically stir for 1 hour at normal temperature to form a solution;

[0033] (2) Mix the solid MK silicone resin powder and isopropanol in a weight ratio of 1:1, and stir at room temperature until a viscous clear solution is obtained;

[0034] (3) Mix the solution prepared in step (1) with the clear solution obtained in step (2) in a weight ratio of 1:2, place it in a flask equipped with a cooling reflux device, and place it in a water bath at 50°C Utilize magnetic stirrer to stir 5h and make resin solution;

[0035] (4) Mix ultrafine metal aluminum powder, ultrafine metal silicon powder, ultrafine metal nickel powder, ultrafine metal titanium powder, ultrafine boron carbide powder and BYBSO2 low temperature molten glas...

Embodiment 2

[0040] (1) Mix liquid phenolic resin and isopropanol according to a weight ratio of 2:1, and mechanically stir for 1.5 hours at normal temperature to form a solution;

[0041] (2) Mix the solid MK silicone resin powder and isopropanol in a weight ratio of 1:1, and stir at room temperature until a viscous clear solution is obtained;

[0042] (3) Mix the solution prepared in step (1) with the clarified solution obtained in step (2) according to a weight ratio of 1:3, place in a flask equipped with a cooling reflux device, and place it in a water bath at 55°C Utilize magnetic stirrer to stir 5.5h and make resin solution;

[0043] (4) Ultrafine metallic aluminum powder, ultrafine metallic silicon powder, ultrafine metallic nickel powder, ultrafine metallic titanium powder, ultrafine boron carbide powder and BYBSO2 low-temperature molten glass powder in a ratio of 2:1:2.5:1.5:2: The weight ratio of 0.25 is fully mixed to make a raw material mixture;

[0044](5) Add the raw materi...

Embodiment 3

[0048] (1) Mix liquid phenolic resin and isopropanol according to a weight ratio of 2:1, and mechanically stir for 2 hours at normal temperature to form a solution;

[0049] (2) Mix the solid MK silicone resin powder and isopropanol in a weight ratio of 1:1, and stir at room temperature until a viscous clear solution is obtained;

[0050] (3) Mix the solution prepared in step (1) with the clarified solution obtained in step (2) according to a weight ratio of 1:1.5, place in a flask equipped with a cooling reflux device, and place it in a water bath at 60°C Utilize magnetic stirrer to carry out stirring 6h and make resin solution;

[0051] (4) Mix ultrafine metal aluminum powder, ultrafine metal silicon powder, ultrafine metal nickel powder, ultrafine metal titanium powder, ultrafine boron carbide powder and BYBSO2 low temperature molten glass powder at 1:2:3:4:2: The weight ratio of 0.5 is fully mixed to make a raw material mixture;

[0052] (5) Add the raw material mixture ...

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Abstract

Disclosed is a preparation method of a high-temperature adhesive suitable for a TC4 titanium-base alloy. The method comprises the following steps of dissolving phenolic resin and MK siloxane resin inisopropanol to prepare resin solutions respectively; mixing the two resin solutions to prepare a glue solution; carrying out mixing on nickel powder, titanium powder, silicon powder, aluminum powder,boron carbide powder and glass powder and then performing ball milling to prepare a uniform filler; and mixing the filler and the glue solution and executing other steps to prepare the adhesive. The preparation method has the advantages that the prepared high-temperature adhesive has the characteristics of being high in temperature resistance, up to 1200 DEG C, high in intermetallic compound generation amount, low in decomposition shrinkage rate, tight in connection with a bonded part, high in bonding strength and the like; and in an anaerobic high-temperature environment of 700-1200 DEG C, the adhesive can provide bonding strength of not less than 20 MPa for the TC4 titanium-based alloy, so that the application of the adhesive technology in high-temperature alloy connection and repair isgreatly improved.

Description

technical field [0001] The invention belongs to the technical field of adhesive material preparation, and in particular relates to a method for preparing a high-temperature adhesive suitable for TC4 titanium-based alloys. Background technique [0002] Heat-resistant titanium alloys (high-temperature titanium alloys) are widely used in high-temperature environments because of their high instantaneous and durable strength, good plasticity and creep resistance, excellent thermal stability and fatigue resistance, etc. It occupies a very important position in the aerospace field. This type of alloy is mainly used to manufacture disks, blades, intake casings, tail nozzles and other aircraft structural parts in compressors. Due to the harsh service environment, they will be fractured and damaged over time. In order to ensure the normal operation of the equipment and avoid adverse consequences, it is necessary to repair the damaged parts in time. Welding technology is the mainstr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/06C09J183/04C09J11/04
CPCC08K2003/023C08K2003/0812C08K2003/0862C08K2003/0881C08K2201/003C08L2201/08C09J11/04C09J161/06C09J183/04C08L83/04C08K3/00C08K3/08C08K3/02C08K3/38C08K3/40C08L61/06
Inventor 王明超卢若云罗星娜冯钊杰
Owner CIVIL AVIATION UNIV OF CHINA
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