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Process for producing dewatering nano-sheet zinc borate power

A technology of hydrophobic nano and zinc borate, applied in the direction of borate, boron oxide, etc., can solve the problems of unsatisfactory lubricating oil additives, large particle size of zinc borate, etc., and achieve excellent extreme pressure, anti-wear, anti-friction, and dispersibility Good, superior performance

Inactive Publication Date: 2009-08-19
梁宝忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The particle size of zinc borate prepared by the existing method is relatively large, which still cannot meet the requirements of lubricating oil additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The invention relates to a method for preparing hydrophobic nano-flaky zinc borate powder. The process comprises the following steps:

[0016] (1) Raw material ratio: according to H 3 BO 3 :ZnO:H 2 O=1:0.3:6 mass ratio for mixing;

[0017] (2) Move the uniformly mixed raw materials into the kettle;

[0018] (3) Hydrothermal reaction: raise the temperature of the kettle to 150°C±10°C, change the pressure from 3MPa±1 to (3±1)MPa, react for 24 hours, cool naturally to room temperature and age for 5-24 hours;

[0019] (4) After aging, the product is filtered, washed, and dried to obtain the hydrophobic nano-flaky zinc borate powder precursor;

[0020] (5) Surface modification: Put the prepared powder in a steam bath of organosilicon compound for 5 minutes to 24 hours, the temperature is 40°C-60°C, the mass ratio of organosilicon to powder is 1:20, and the obtained product It is hydrophobic nano flake zinc borate powder.

[0021] The selected organosilicon compounds in...

Embodiment 1

[0022] Embodiment 1: (1) raw material proportioning: press H 3 BO 3 :ZnO:H 2 The mass ratio of O=1:0.3:6 is weighed, and the boric acid is first dissolved in deionized water, and then put into zinc oxide for stirring. (2) Move the uniformly mixed raw materials into the kettle. (3) Hydrothermal reaction: the temperature of the kettle was raised to 150° C., the pressure was 2 MPa, and the reaction was carried out for 24 hours, then naturally cooled to room temperature and aged for 24 hours. (4) The aged product is filtered, washed, and dried to obtain the hydrophobic nano-flaky zinc borate powder precursor. (5) Surface modification: put the prepared powder in a steam bath of organosilicon compound for 5 minutes at a temperature of 40°C, the mass ratio of organosilicon to powder is 1:20, and the selected organosilicon compound includes: alkane Based silicate, the chemical formula is: R 3 Si(OR), R is methyl, ethyl or multi-carbon alkyl group. The resulting product is hydrop...

Embodiment 2

[0025] Embodiment 2: (1) raw material proportioning: press H 3 BO 3 :ZnO:H 2 The mass ratio of O=1:0.3:6 is weighed, and the boric acid is first dissolved in deionized water, and then put into zinc oxide for stirring. (2) Move the uniformly mixed raw materials into the kettle. (3) Hydrothermal reaction: the temperature of the kettle was raised to 140° C., the pressure was 3 MPa, and the reaction was carried out for 24 hours, then naturally cooled to room temperature and aged for 5 hours. (4) The aged product is filtered, washed, and dried to obtain the hydrophobic nano-flaky zinc borate powder precursor. (5) Surface modification: put the prepared powder in a steam bath of organosilicon compound for 60 minutes at a temperature of 50°C, the mass ratio of organosilicon to powder is 1:20, and the selected organosilicon compound includes: alkane Based silicate, the chemical formula is: R 3 Si(OR), R is methyl, ethyl or multi-carbon alkyl group. The resulting product is hydrop...

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Abstract

The invention relates to a method for preparing hydrophobic nano-plate zinc borate powder, and belongs to the field of inorganic materials. The method is to take boric acid and zinc oxide as raw materials, deionized water as a solvent, and a high-temperature and high-pressure reaction kettle as a reactor, and synthesize the hydrophobic nano-plate zinc borate powder by controlling the reaction temperature, the pressure, the aging time and surface modification. The method has simple process and is suitable for industrialized production, and the product can be used for a lubricating oil additive.

Description

technical field [0001] The invention belongs to the field of inorganic materials, in particular to a hydrophobic nano-flaky zinc borate powder and a preparation method. Background technique [0002] Hydrophobic nano-flaky zinc borate powder can be used as a new type of lubricating oil additive, the chemical composition is: Zn 2 B 6 o 11 ·3H 2 O, which has environmental protection functions such as non-toxic, non-polluting and smoke suppression. In the field of tribology, the application of traditional oily agents and extreme pressure antiwear additives is greatly limited due to their own defects. Oil-based agents have low load-carrying capacity, and extreme-pressure anti-wear agents are mostly organic compounds containing sulfur, phosphorus, and chlorine, which pollute the environment and have been restricted in foreign countries. The development of lubricating oil additives with good anti-wear performance, high load-carrying capacity and certain repairing function on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B35/12
Inventor 李志才孙德春
Owner 梁宝忠
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