Preparation method and application of modified nano calcium carbonate

A technology of nano-calcium carbonate and calcium carbonate, which is applied in the petroleum industry, the treatment of dyed polymer organic compounds, and fibrous fillers, etc., can solve the problems that the composite calcium sulfonate-based grease cannot have aging resistance, hardening resistance and high temperature resistance at the same time. Achieve the effects of less formula components, improved high temperature resistance, and good extreme pressure

Active Publication Date: 2019-04-16
GUANGXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to propose a preparation method of modified nano-calcium carbonate and its application, so as to solve the technical problem that the complex calcium sulfonate-based lubricating grease in the above-mentioned prior art cannot simultaneously have properties such as aging resistance, hardening resistance and high temperature resistance.

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  • Preparation method and application of modified nano calcium carbonate
  • Preparation method and application of modified nano calcium carbonate
  • Preparation method and application of modified nano calcium carbonate

Examples

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Effect test

Embodiment 1

[0041] A modified nano-calcium carbonate, in parts by weight, comprising the following raw materials: 100 parts of calcium carbonate whiskers, 0.7 parts of macromolecular modifier ABM, and 16 parts of solvent; The company's GY series products are needle-shaped in shape and particle size is 33.2-48.7nm; the solvent is analytically pure acetone;

[0042] The synthesis of described modified nanometer calcium carbonate comprises the following steps:

[0043] S1: Put the calcium carbonate whiskers in a vacuum oven at 105°C for 2 hours and dry them for 2 hours, so that the moisture content is 0.4%;

[0044] S2: Dilute the macromolecule modifier ABM with acetone solvent, and mix evenly to obtain a mixed solvent;

[0045] S3: Put the dried calcium carbonate whiskers into a three-roller continuous modification machine, slowly add the mixed solvent obtained in step S2 under medium-speed stirring, and obtain modified nano-calcium carbonate after stirring for 30 minutes.

[0046] Descri...

Embodiment 2

[0058] A modified nano-calcium carbonate, in parts by weight, comprising the following raw materials: 100 parts of calcium carbonate whiskers, 0.7 parts of macromolecular modifier ABM, and 20 parts of solvent; The company's GY series products are needle-shaped in shape and particle size is 28.9-51.6nm; the solvent is analytically pure acetone;

[0059] The synthesis of described modified nanometer calcium carbonate comprises the following steps:

[0060] S1: Put the calcium carbonate whiskers in a vacuum oven at 105°C for 2 hours and dry them for 2 hours, so that the moisture content is 0.6%;

[0061] S2: Dilute the macromolecule modifier ABM with acetone solvent, and mix evenly to obtain a mixed solvent;

[0062] S3: Put the dried calcium carbonate whiskers into a three-roller continuous modification machine, slowly add the mixed solvent obtained in step S2 under medium-speed stirring, and obtain modified nano-calcium carbonate after stirring for 30 minutes.

[0063] Descri...

Embodiment 3

[0075] A modified nano-calcium carbonate, in parts by weight, comprising the following raw materials: 100 parts of calcium carbonate whiskers, 0.7 parts of macromolecular modifier ABM, and 16 parts of solvent; The company's GY series products are needle-shaped in shape and particle size is 43.4-58.2nm; the solvent is analytically pure acetone;

[0076] The synthesis of described modified nanometer calcium carbonate comprises the following steps:

[0077] S1: Put the calcium carbonate whiskers in a vacuum oven at 105°C for 2 hours and dry them for 2 hours, so that the moisture content is 0.5%;

[0078] S2: Dilute the macromolecule modifier ABM with acetone solvent, and mix evenly to obtain a mixed solvent;

[0079] S3: Put the dried calcium carbonate whiskers into a three-roller continuous modification machine, slowly add the mixed solvent obtained in step S2 under medium-speed stirring, and obtain modified nano-calcium carbonate after stirring for 30 minutes.

[0080] Descri...

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Abstract

The invention discloses a preparation method and application of modified nano calcium carbonate, and belongs to the technical field of preparation of modified calcium carbonate. Synthesis of the modified nano calcium carbonate comprises the following steps that calcium carbonate crystal whiskers are put into a vacuum oven at 105 DEG C to be dried for 2 hours, so that the water content is between 0.3-0.6%; a macromolecular modifier ABM is diluted by using an acetone solvent, and a mixed solvent is obtained after uniform mixing; the dried calcium carbonate crystal whiskers are placed into a three-roller continuous modification machine, the mixed solvent is slowly added under medium-speed stirring, and the modified nano calcium carbonate is obtained after stirring is carried out for 30 min. According to the modified nano calcium carbonate, carbon oxygen bonds with stable performance can be introduced on the surface of filler, and in the high-temperature thermal aging process, the modifiednano calcium carbonate can be added into lubricating grease by scarifying the carbon oxygen bonds in molecules to protect other chemical bonds in the lubricating grease, so that the aging speed of alubricating grease system is reduced, and the high temperature resistance is improved.

Description

technical field [0001] The invention relates to the technical field of preparation of modified calcium carbonate, in particular to a preparation method and application of modified nano calcium carbonate. Background technique [0002] Nano-calcium carbonate is widely used as a new functional inorganic material with stable performance and easy processing. In the field of lubricants, the modified nano-calcium carbonate has the advantages of good cleaning effect, low-temperature corrosion resistance, anti-wear and anti-friction as an additive for lubricating grease. [0003] As an independent industrial part of lubricants, grease is widely used in industrial machinery, agricultural machinery, transportation industry, Electronic information industry and other fields. Grease is mainly made by thickening base oil with thickener and adding additives. According to the type of thickener used, it can be divided into metal soap-based grease, organic grease, hydrocarbon-based grease an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/10C10M169/00
CPCC09C1/021C09C3/10C10M169/00C10M2201/062C10M2201/084C10M2209/02C10N2010/04
Inventor 童张法覃玲意周文英钟玲萍蒙杨平陈珍明苏耀恩
Owner GUANGXI UNIV
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