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Treatment method for modifying titanium boride ceramic surface by using silane coupling agent

A technology of silane coupling agent and ceramic surface, which is applied in the field of treatment of titanium boride ceramic surface modified by silane coupling agent, can solve the problem of the absence of hydroxyl groups that can interact with the coupling agent, so as to improve the bonding performance and solve the problem of Interfacial wettability and compatibility issues, significant treatment effects

Active Publication Date: 2016-06-01
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] while TiB 2 On the surface of this kind of non-oxide ceramics, there is no hydroxyl group that can interact with the coupling agent, and the coupling agent cannot be directly applied for grafting

Method used

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  • Treatment method for modifying titanium boride ceramic surface by using silane coupling agent
  • Treatment method for modifying titanium boride ceramic surface by using silane coupling agent

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A treatment method for modifying the surface of titanium boride ceramics with a silane coupling agent, comprising the steps of:

[0023] 1) Surface oxidation etching of titanium boride ceramics:

[0024] Take TiB with a thickness of 2mm cut by an EDM 2 The ceramic sheet was ultrasonically oscillated in acetone for 20 minutes to remove oil stains and sundries existing on the ceramic surface during processing, and then dried to obtain TBC-1. Put TBC-1 in a muffle furnace for oxidation etching, the heating rate is 10°C / min, the holding temperature is 800°C, the holding time is 2h, and it is naturally cooled to room temperature to obtain a ceramic covered with a yellow oxide film. Washed with deionized water and dried to obtain TBC-2. The surface morphology of TBC-2 is as follows figure 1 shown.

[0025] 2) Take 36ml of ethanol and 4ml of deionized water, mix them, then add 10ml of silane coupling agent KH-550, use a magnetic stirrer to stir at room temperature for 20mi...

Embodiment 2

[0029] A treatment method for modifying the surface of titanium boride ceramics with a silane coupling agent, comprising the steps of:

[0030] 1) Surface oxidation etching of titanium boride ceramics:

[0031] Take TiB with a thickness of 2mm cut by an EDM 2 The ceramic sheet was ultrasonically oscillated in acetone for 10 minutes to remove oil stains and sundries existing on the ceramic surface during processing, and then dried to obtain TBC-1. Put TBC-1 in a muffle furnace for oxidation etching, the heating rate is 10°C / min, the holding temperature is 600°C, the holding time is 1h, and naturally cooled to room temperature to obtain a ceramic covered with a light yellow oxide film. Wash with deionized water and dry to obtain TBC-2.

[0032] 2) Take 32ml of methanol and 4ml of deionized water, mix them, then add 3.6ml of silane coupling agent KH560, use a magnetic stirrer to stir at room temperature for 20min, mix well, so that the silane coupling agent is completely hydrol...

Embodiment 3

[0036] A treatment method for modifying the surface of titanium boride ceramics with a silane coupling agent, comprising the steps of:

[0037] 1) Surface oxidation etching of titanium boride ceramics:

[0038] Take TiB with a thickness of 2mm cut by an EDM 2 The ceramic sheet was ultrasonically oscillated in acetone for 30 minutes to remove oil stains and sundries existing on the ceramic surface during processing, and dried to obtain TBC-1. Put TBC-1 in a muffle furnace for oxidation etching, the heating rate is 10°C / min, the holding temperature is 1000°C, the holding time is 3h, and it is naturally cooled to room temperature to obtain a ceramic covered with a yellow oxide film. Washed with deionized water and dried to obtain TBC-2.

[0039] 2) Take 40ml of isopropanol and 4ml of deionized water, mix them, then add 8.8ml of silane coupling agent KH550, use a magnetic stirrer to stir at room temperature for 20min, mix well, so that the silane coupling agent is completely hyd...

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Abstract

The invention relates to a titanium boride surface modification method, particularly a treatment method for modifying a titanium boride ceramic surface by using a silane coupling agent. The method is characterized by comprising the following steps: 1) surface oxidation etching of titanium boride ceramic: carrying out ultrasonic oscillation in acetone, putting in a muffle furnace, and carrying out oxidation etching until the surface of the ceramic wafer is oxidated to form TiO2; 2) hydrolysis of silane coupling agent: uniformly mixing alcohol and deionized water to obtain an alcohol water solution, and adding a silane coupling agent; 3) application of silane coupling agent to titanium boride ceramic surface: uniformly spreading the obtained silane coupling agent solution on the titanium boride ceramic surface subjected to oxidation treatment by using a brush, completely covering the ceramic wafer with a polypropylene film, and keeping the temperature at 50-70 DEG C for 3-5 hours; and removing the polypropylene film, naturally drying at room temperature in the shade, cleaning the ceramic wafer with ethanol, and drying. The coupling-agent-applied titanium boride ceramic has obviously higher bonding property with organic resins.

Description

technical field [0001] The invention relates to a method for modifying the surface of titanium boride, in particular to a treatment method for modifying the surface of titanium boride ceramics with a silane coupling agent. Background technique [0002] Ceramic has good mechanical properties such as high strength and corrosion resistance, and is an excellent structural material. With the continuous expansion of the application range of structural ceramics, the connection technology of ceramics and other materials has attracted more and more attention. Among them, bonding is widely used in the fields of ceramic repair and connection. However, the surface structure of general structural ceramics is dense and the surface activity is low, resulting in poor bonding effect. For ceramic surfaces, commonly used treatment methods include: mechanical treatment, roughening of the ceramic surface; acid etching treatment, etc. At present, there are also some studies on grafting coupling...

Claims

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Application Information

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IPC IPC(8): C04B41/84C04B41/91
CPCC04B41/009C04B41/4905C04B41/5315C04B41/5338C04B41/84C04B41/91C04B35/58071
Inventor 张金咏任欣楠张帆
Owner WUHAN UNIV OF TECH
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