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A kind of preparation method of high temperature adhesive suitable for tc4 titanium-based 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, large production volume, and high bonding strength. Effect

Active Publication Date: 2021-09-24
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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  • A kind of preparation method of high temperature adhesive suitable for tc4 titanium-based alloy
  • A kind of preparation method of high temperature adhesive suitable for tc4 titanium-based alloy
  • A kind of preparation method of high temperature adhesive suitable for tc4 titanium-based alloy

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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 clarified 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) Ultrafine metallic aluminum powder, ultrafine metallic silicon powder, ultrafine metallic nickel powder, ultrafine metallic titanium powder, ultrafine boron carbide powder and BYBSO2 low-temperature...

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

A method for preparing a high-temperature adhesive suitable for TC4 titanium-based alloys. It includes dissolving phenolic resin and MK siloxane resin in isopropanol to prepare resin solution; mixing the two resin solutions to prepare glue solution; mixing nickel powder, titanium powder, silicon powder, aluminum powder, boron carbide powder and glass powder for ball milling Preparation of uniform filler; mixing filler and glue solution to prepare adhesive and other steps. Effects of the present invention: the prepared high-temperature adhesive has the characteristics of high temperature resistance up to 1200°C, large amount of intermetallic compounds, low decomposition shrinkage rate, tight connection with the bonded parts, and high bonding strength; at 700°C to 1200°C In an anaerobic high-temperature environment, this adhesive can provide a bond strength of not less than 20 MPa for TC4 titanium-based alloys, which greatly improves the application of bonding technology in superalloy connections and repairs.

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 Patents(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