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Preparation method of foaming heat-insulation phosphate adhesive

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

Active Publication Date: 2021-08-10
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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  • Preparation method of foaming heat-insulation phosphate adhesive

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specific Embodiment approach 1

[0020] Specific implementation mode 1: In this implementation mode, a method for preparing a foamed heat-insulating phosphate adhesive 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 at 78-82°C, then lower the temperature to -18-20°C and keep it for 12-13 hours. Aluminum dihydrogen phosphate crystallizes at the bottom and freezes on the upper layer , the ice is separated to obtain crystallized aluminum dihydrogen phosphate;

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

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

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment differs from Embodiment 1 in that the auxiliary agent described in step 2 is a silane coupling agent. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that in step 2, according to the mass parts, 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 discloses a preparation method of a foaming heat-insulating phosphate adhesive, and relates to the field of preparation of phosphate adhesives. The invention aims to solve the technical problems of high heat conductivity coefficient and poor heat insulation performance of the existing ordinary phosphate adhesive. The method comprises the following steps: crystallizing aluminum dihydrogen phosphate to prepare a phosphate adhesive matrix; preparing a curing agent; preparing a filler in which a curing agent and aluminum powder are uniformly mixed; and curing. The adhesive matrix can be cured at normal temperature and foamed at normal temperature, and the cured adhesive can be used in a high-temperature environment of 1800 DEG C for a long time. The preparation method is used for preparing the foaming heat-insulating phosphate adhesive.

Description

technical field [0001] The invention relates to the field of phosphate adhesive preparation. Background technique [0002] Phosphate adhesive is a basic bonding material with excellent resistance to ultra-normal temperature and ultra-high temperature. It is currently the main high-temperature-resistant bonding and repairing material for aerospace. With the advancement of science, people have higher and higher requirements for materials, and 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, but ordinary phosphate Adhesives have high thermal conductivity and poor filling insulation properties, thus limiting their application in the field of high-temperature filling insulation. Contents of the invention [0003] The invention aims to solve the technical problems of high thermal conductivity and poor heat insulation performance of the existing com...

Claims

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Application Information

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Patent Type & Authority Applications(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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