Preparation method of ceramic precursor modified phosphate adhesive

A phosphate adhesive, ceramic precursor technology, applied in the direction of adhesives, adhesive additives, inorganic adhesives, etc., can solve the problems of high construction viscosity and difficult construction, and achieve excellent viscosity, excellent low temperature storage and construction. performance, the effect of excellent high temperature stability

Active Publication Date: 2021-07-30
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of high viscosity and difficult construction of existing phosphate adhesives in ultra-low temperature outdoor construction, and provides a preparation method of ceramic precursor modified phosphate adhesives

Method used

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Examples

Experimental program
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specific Embodiment approach 1

[0021] Specific implementation mode 1: In this implementation mode, a method for preparing a ceramic precursor modified phosphate adhesive is specifically carried out according to the following steps:

[0022] 1. Heat the industrial-grade chromium aluminum dihydrogen phosphate solution to obtain a saturated salt solution, control the heating temperature to 78-82°C, then lower the temperature to -18-20°C and keep it for 12-13 hours, the bottom chromium aluminum phosphate will crystallize, and the upper layer Freezing, separating the ice to obtain crystalline aluminum dihydrogen chromium phosphate;

[0023] 2. Add acetone and additives to the chromium aluminum dihydrogen phosphate obtained in step 1, and fully dissolve to obtain a chromium aluminum dihydrogen phosphate polymer solution;

[0024] 3. Add polyaluminocarbosilane and additives into the acetone solvent, fully dissolve to obtain polyaluminocarbosilane solution;

[0025] 4. The chromium aluminum dihydrogen phosphate po...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 2, the chromium aluminum dihydrogen phosphate is 100 parts, the acetone is 50-150 parts, and the additive is 1 part. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 3, the polyaluminocarbosilane is 2-25 parts by weight, the auxiliary agent is 1 part, and the acetone solvent is 100 parts. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a ceramic precursor modified phosphate adhesive, and relates to the field of preparation of phosphate adhesives. The invention aims to solve the technical problems that the existing phosphate adhesive is high in ultralow-temperature outdoor construction viscosity and difficult to construct. The method comprises the following steps: preparing crystalline chromium aluminum dihydrogen phosphate by acquiring a saturated salt solution; preparing a chromium aluminum dihydrogen phosphate polymer solution and a polyaluminocarbosilane solution; preparing a modified non-aqueous phosphate adhesive matrix; preparing a curing agent; and mixing and curing the modified non-aqueous phosphate adhesive matrix and the curing agent. The adhesive matrix disclosed by the invention is relatively low in viscosity under a low-temperature condition, has excellent low-temperature construction performance and can be cured at low temperature or normal temperature, and the cured adhesive can be used in a high-temperature environment of 1800 DEG C for a long time. The method is used for preparing the ceramic precursor modified 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-low temperature and ultra-high temperature. It is currently the main high-temperature-resistant bonding and repairing material for aerospace. However, my country has a vast territory and the winter is long in the north. The viscosity of ordinary phosphate resins increases sharply at low temperatures, especially in environments below -10°C, making it difficult to mix and outdoor construction. Therefore, it is of great significance to develop a high-temperature-resistant adhesive that can be constructed and cured in an ultra-low temperature environment to meet the technical requirements of aerospace-related units for outdoor low-temperature repair and high-temperature use. At the same time, this material can also be used for roads, bridges and buildings outdoors in winter. R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/00C09J11/08C09J11/04
CPCC09J1/00C09J11/08C09J11/04Y02W30/91
Inventor 张春红曹先启刘立佳张嘉明彭程
Owner HARBIN ENG UNIV
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