Preparation method of high-strength thermal insulation material

A thermal insulation material and high-strength technology, which is applied in the field of preparation of high-strength thermal insulation materials, can solve the problems of thermal insulation materials such as easy deformation, poor thermal insulation performance, and poor mechanical strength, so as to reduce thermal conductivity and enhance density Performance and structural strength, and the effect of improving thermal insulation performance

Pending Publication Date: 2020-09-01
泉州市鼎鑫丰泰建筑材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a preparation method of a high-strength heat-insulation material for the defects of poor heat-insulation performance and poor mechanical strength of the heat-insulation material at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of the dispersion:

[0034] Put vermiculite and montmorillonite into a planetary ball mill at a mass ratio of 5:1, put it into a planetary ball mill at a speed of 80r / min and a ball-to-material ratio of 10:1 and grind for 30min to obtain a grinding mixture, and mix the grinding mixture with mass The ethylene glycol solution with a fraction of 5% is put into a beaker at a mass ratio of 1:10, and stirred with a stirrer at a speed of 300r / min for 60min to obtain a dispersion;

[0035] Preparation of alkaline reaction solution:

[0036] Put the dispersion into a three-necked flask, add dropwise a sodium hydroxide solution with a mass fraction of 8% to adjust the pH value to 10, place the three-necked flask in a resistance heating mantle, and raise the temperature inside the heating mantle to 100°C. Stir with a stirrer at a speed of 200r / min for 30min to obtain an alkaline reaction solution;

[0037] Preparation of the reaction solution:

[0038] Add ramie fib...

Embodiment 2

[0046] Preparation of the dispersion:

[0047] Put vermiculite and montmorillonite into the planetary ball mill at a mass ratio of 5:1, put it into the planetary ball mill at a speed of 90r / min and a ball-to-material ratio of 10:1 and grind for 35min to obtain a grinding mixture, and mix the grinding mixture with mass The ethylene glycol solution with a fraction of 7.5% is put into a beaker at a mass ratio of 1:10, and stirred with a stirrer at a speed of 325r / min for 70min to obtain a dispersion;

[0048] Preparation of alkaline reaction solution:

[0049] Put the dispersion into a three-necked flask, add dropwise a sodium hydroxide solution with a mass fraction of 9% to adjust the pH value to 10.5, place the three-necked flask in a resistance heating mantle, and raise the temperature inside the heating mantle to 105°C. Stir with a stirrer at a speed of 210r / min for 35min to obtain an alkaline reaction solution;

[0050] Preparation of the reaction solution:

[0051] Add r...

Embodiment 3

[0059] Preparation of the dispersion:

[0060] Put vermiculite and montmorillonite into a planetary ball mill at a mass ratio of 5:1, put it into a planetary ball mill at a speed of 100r / min and a ball-to-material ratio of 10:1 and grind for 40 minutes to obtain a grinding mixture, and mix the grinding mixture with mass The ethylene glycol solution with a fraction of 10% is put into a beaker at a mass ratio of 1:10, and stirred with a stirrer at a speed of 350r / min for 80min to obtain a dispersion;

[0061] Preparation of alkaline reaction solution:

[0062] Put the dispersion into a three-necked flask, add dropwise a sodium hydroxide solution with a mass fraction of 10% to the three-necked flask to adjust the pH to 11, place the three-necked flask in a resistance heating mantle, and raise the temperature inside the heating mantle to 110°C. Stir with a stirrer at a speed of 220r / min for 40min to obtain an alkaline reaction solution;

[0063] Preparation of the reaction solut...

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Abstract

The invention belongs to the technical field of building material preparation, and particularly relates to a preparation method of a high-strength thermal insulation material. The preparation method comprises the following steps: firstly, grinding and mixing vermiculite and montmorillonite, then putting the obtained mixture into an ethylene glycol solution after the grinding, mixing to prepare a dispersion, dropwise adding an alkali liquor into the dispersion, heating and stirring at high temperature to obtain an alkaline reaction solution, adding ramie into the alkaline reaction solution, carrying out oil bath heating treatment, adding acetic acid, mixing to obtain a to-be-reacted solution, adding ammonium persulfate for reaction, reacting at high temperature and high pressure to obtain aheat treatment product, performing suction filtration on the heat treatment product, washing, performing high-temperature sintering to prepare a modified thermal insulation agent, mixing the modifiedthermal insulation agent, stearic acid and other materials, performing hot pressing, freezing, soaking in acetone, and drying to obtain the high-strength thermal insulation material. The thermal insulation material prepared through the method is good in thermal insulation performance, good in mechanical strength and not prone to deformation and damage and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to a preparation method of a high-strength heat insulation material. Background technique [0002] With the rapid development of aerospace technology, thermal protection systems and materials have become one of the most important key technologies that restrict the success of aircraft research and development. With the continuous improvement of the flight Mach number, the requirements for the temperature of the thermal protection material are getting higher and higher. During operation, the temperature of the outer wall of the combustion chamber is as high as 2000K or more. In order to protect the metal shell of the engine and its surrounding electronic equipment, reduce Heat dissipation and the obvious infrared signal characteristics brought by it, the outer wall of the combustion chamber is protected by ultra-high temperature heat insulation materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/02C04B20/06
CPCC04B20/06C04B26/02C04B2201/32C04B2201/50C04B18/248C04B14/204C04B14/104C04B24/085C04B14/34C04B24/026C04B20/023
Inventor 陈国林
Owner 泉州市鼎鑫丰泰建筑材料科技有限公司
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