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Preparation method for temperature-sensitive material

A temperature-sensitive and drying technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of poor thermal conductivity of paraffin wax, long temperature response time, and reduced temperature sensitivity, so as to achieve good coating effect and improve Temperature sensitivity, thermal expansion and stability improvement effects

Inactive Publication Date: 2014-05-07
XIAN JIAOTONG UNIV JINGSHENG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are already many types of temperature-sensitive materials with various effects. Among them, paraffin wax is mostly used for thermal expansion materials due to its large expansion coefficient near the melting point. However, the thermal conductivity of paraffin wax is very poor, so the response time to temperature is long. decreased sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for preparing a temperature-sensitive material, comprising the steps of:

[0016] In the first step, 15g of dry pure paraffin is heated and melted;

[0017] In the second step, 1 g of polyvinylpyrrolidone was dispersed with petroleum ether and added to molten paraffin, reacted at 80°C for 45 minutes, and dried to obtain a composite organic compound;

[0018] In the third step, pass 100g of copper powder through a 100-mesh sieve, mix and stir with the above-mentioned compound organic matter, and ball mill for 80 hours under an argon atmosphere after drying, using glass balls for ball milling.

Embodiment 2

[0020] A method for preparing a temperature-sensitive material, comprising the steps of:

[0021] In the first step, 20g of dry pure paraffin is heated and melted;

[0022] In the second step, 1 g of polyvinylpyrrolidone was dispersed with petroleum ether and added to molten paraffin, reacted at 80°C for 45 minutes, and dried to obtain a composite organic compound;

[0023] In the third step, pass 120g of copper powder through a 100-mesh sieve, mix and stir with the above-mentioned compound organic matter, and ball mill for 80 hours under an argon atmosphere after drying, using glass balls for ball milling.

Embodiment 3

[0025] A method for preparing a temperature-sensitive material, comprising the steps of:

[0026] In the first step, 18g of dry pure paraffin is heated and melted;

[0027] In the second step, 1 g of polyvinylpyrrolidone was dispersed with petroleum ether and added to molten paraffin, reacted at 80°C for 45 minutes, and dried to obtain a composite organic compound;

[0028] In the third step, pass 110g of copper powder through a 100-mesh sieve, mix and stir with the above-mentioned compound organic matter, and ball mill for 80 hours under an argon atmosphere after drying, using glass balls for ball milling.

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Abstract

A preparation method for temperature-sensitive material comprises: first step, heating 15-20 g of dry pure paraffin and melting; second step, dispersing 1 g of polyvinylpyrrolidone and adding into melt paraffin, reacting at 80 DEG C for 45 min, and drying to obtain a composite compound; and third step, mixing 100-120 g of copper powder with the above composite compound, stirring, drying, and performing ball milling in an argon environment for 80 h. According to the preparation method, copper powder is coated with paraffin and polyvinylpyrrolidone with good coating effect, and the three components combines tightly, added polyvinylpyrrolidone is capable of further improving the thermal expansion property and the stability of the material, and copper powder is capable of improving the thermal conduction capability and the temperature sensitivity of the material.

Description

technical field [0001] The invention relates to the field of temperature-sensitive materials, in particular to a preparation method of temperature-sensitive materials. Background technique [0002] Thermosensitive materials refer to smart materials that respond to temperature stimuli, and are mostly used in sensor technology in various fields, or for the preparation of driving components in microsystems. There are already many types of temperature-sensitive materials with various effects. Among them, paraffin wax is mostly used for thermal expansion materials due to its large expansion coefficient near the melting point. However, the thermal conductivity of paraffin wax is very poor, so the response time to temperature is long. reduced sex. Contents of the invention [0003] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a method for preparing a temperature-sensitive material. [0004] In order to...

Claims

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Application Information

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IPC IPC(8): C08L91/06C08L39/06C08K3/08C09K5/14
Inventor 田边
Owner XIAN JIAOTONG UNIV JINGSHENG SCI & TECH DEV
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