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A kind of preparation method of foaming thermal insulation phosphate adhesive

A phosphate adhesive, foam insulation technology, used in adhesives, adhesive additives, inorganic adhesives, etc., can solve the problems of high thermal conductivity and poor thermal insulation performance, and achieve low density and good thermal insulation. effect, the effect of excellent high temperature stability

Active Publication Date: 2022-05-27
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of high thermal conductivity and poor heat insulation performance of existing common phosphate adhesives, and provides a preparation method of foamed heat insulating phosphate adhesives

Method used

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  • A kind of preparation method of foaming thermal insulation phosphate adhesive

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specific Embodiment approach 1

[0020] Specific embodiment 1: the preparation method of a foamed thermal insulation phosphate adhesive of the present embodiment is specifically carried out according to the following steps:

[0021] 1. Heat the industrial grade aluminum dihydrogen phosphate solution to obtain a saturated salt solution, control the heating temperature to be 78-82 °C, then cool down to -18--20 °C for 12-13 hours, the bottom crystallizes aluminum dihydrogen phosphate, and the upper layer freezes , the ice is separated to obtain crystalline aluminum dihydrogen phosphate;

[0022] 2. Add acetone and auxiliary agents to the aluminum dihydrogen phosphate obtained in step 1, and fully dissolve to obtain a phosphate adhesive matrix;

[0023] 3. Mix forsterite sand with a particle size of 120-200μm, magnesia-zirconium sand with a particle size of 100-150μm, alumina with a particle size of 10-50μm and alumina with a particle size of 150-200μm, disperse at a high speed, and then disperse at a high speed....

specific Embodiment approach 2

[0026] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the auxiliary agent in step 2 is a silane coupling agent. Others are the same as the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is: in step 2, according to the mass fraction, the aluminum dihydrogen phosphate is 70-100 parts, the acetone is 29-120 parts, and the auxiliary agent is 1 part . Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for preparing foamed heat-insulating phosphate adhesive, and the invention relates to the field of preparation of phosphate adhesive. The invention aims to solve the technical problems of high thermal conductivity and poor heat insulation performance of the existing common phosphate adhesive. Method: crystallize aluminum dihydrogen phosphate to prepare phosphate adhesive matrix; prepare curing agent; prepare filler uniformly mixed with curing agent and aluminum powder; solidify. The adhesive matrix of the present invention can be cured at room temperature and foamed at room temperature. After curing, the adhesive can be used in a high temperature environment of 1800°C for a long time. The invention is used for preparing foam heat-insulating phosphate adhesive.

Description

technical field [0001] The invention relates to the field of preparation of phosphate adhesives. Background technique [0002] Phosphate adhesive is a basic bonding material with excellent resistance to ultra-normal and ultra-high temperature. It is currently the main high-temperature-resistant bonding and repair material in aerospace. With the advancement of science, people's requirements for materials are getting higher and higher, and they are committed to researching materials that meet special purposes. The bonding requirements for phosphate adhesives in the field of filling and heat insulation are also increasing. Adhesives have high thermal conductivity and poor thermal insulation performance, thus limiting their application in the field of high temperature thermal insulation. SUMMARY OF THE INVENTION [0003] The invention aims to solve the technical problems of high thermal conductivity and poor thermal insulation performance of the existing common phosphate adhe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J1/00C09J11/04
CPCC09J1/00C09J11/04
Inventor 张春红曹先启刘立佳张嘉明彭程
Owner HARBIN ENG UNIV
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