Normal temperature curing hydration adhesive based on inorganic phosphate and preparation method
An inorganic phosphate, room temperature curing technology, applied in the direction of inorganic adhesives, adhesives, etc., can solve the problems of energy consumption, high cost of curing agent, complex production process, etc., to achieve the effect of excellent weather resistance and long service life
Active Publication Date: 2020-09-22
伦慧东
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Problems solved by technology
Thermosetting adhesives are made by adding materials such as aluminum, zirconium, and silicon to the phosphate matrix. The curing mechanism of thermosetting adhesives is related to their materials, and they need to be heated at high temperatures to be cured. The process is cumbersome and energy-consuming.
Cold-setting adhesives are made by adding magnesium, zinc and other materials into the phosphate matrix as special curing agents. For example, the patent application number is 201510807495.3, which discloses a water-based aluminum-containing phosphate ceramic anti-corrosion coating and its preparation and curing. method, the cost of the curing agent is relatively high, and the production process is complicated, and it still needs to be baked at a temperature of 120-200°C for several hours to more than ten hours to achieve curing
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[0031] A preparation method of an inorganic phosphate-based normal temperature curing hydration adhesive composition, the key is: the preparation method comprises the following steps:
[0032] a. Mix 100 parts by weight of basic metal oxide or metal hydroxide with 50-100 parts of dihydrogen phosphate and 5-30 parts of retarder;
[0033] b. Add 60-120 parts of water to the above mixture to obtain a phosphate inorganic adhesive cured at room temperature.
[0034] The present invention also provides a preparation method of the two-component room temperature curing phosphate inorganic adhesive described in the above technical solution, comprising the following steps:
[0035] 1. Mix basic metal oxides or metal hydroxides with dihydrogen phosphate, retarder and corresponding pigments evenly to obtain component A, and take water as component B;
[0036] 2. Mix components A and B to obtain a phosphate inorganic adhesive cured at room temperature. The prepared phosphate adhesive can...
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Abstract
The invention relates to an inorganic phosphate-based room temperature curing hydration adhesive and a preparation method thereof. A purpose of the present invention is to improve the performance of the inorganic phosphate adhesive, simplify the production process and reduce the energy consumption cost. According to the present invention, dihydrogen phosphates such as aluminum dihydrogen phosphate and potassium dihydrogen phosphate with characteristics of strong adhesion, high-temperature resistance and low price, and a metal oxide or metal hydroxide are used as reaction substrate materials, NaCl or boric acid is used as a retarder, water is added, and stirring is performed to prepare a slurry, wherein the curing time can be prolonged to 120 min and the hardness can achieve 9H when the prepared slurry is specifically used; and the phosphate adhesive process is simplified without the special curing agent, and only the water is added to the powder material so as to cure at the room temperature.
Description
technical field [0001] The invention relates to an inorganic adhesive composition, which belongs to the field of coating preparation, in particular to an inorganic phosphate-based normal temperature curing hydration adhesive and a preparation method. Background technique [0002] At present, inorganic adhesives are mainly silicate and phosphate, which have more advantages than phosphate adhesives in terms of corrosion resistance, high temperature resistance, aging resistance, non-toxic and environmental protection. [0003] The current phosphate adhesives are divided into two types: thermosetting and cold setting. Thermosetting adhesives are made by adding materials such as aluminum, zirconium, and silicon to the phosphate matrix. The curing mechanism of thermosetting adhesives is related to their materials, and they need to be heated at high temperatures to be cured. The process is cumbersome and energy-consuming. Cold-setting adhesives are made by adding magnesium, zinc a...
Claims
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IPC IPC(8): C09J1/00
CPCC09J1/00
Inventor 伦慧东
Owner 伦慧东