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Preparation method of talcum powder used for ship anticorrosion coatings

An anti-corrosion coating, talc technology, applied in anti-corrosion coatings, chemical instruments and methods, fibrous fillers, etc., can solve the problems of affecting the anti-corrosion effect, irregular particle shape, physical and chemical properties, etc., to improve the anti-corrosion effect, The effect of concentrated particle size distribution and improved salt spray resistance time

Inactive Publication Date: 2017-02-01
JIANGXI GUANGYUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional anti-corrosion coatings for ships mainly use sericite and ordinary talc powder as fillers. Sericite powder has excellent performance, but its oil absorption is higher than that of talcum powder, so the demand for additives is greater, and the price is also higher than that of talc powder; Although the price of ordinary talc powder is relatively low, and because of its flake structure, it has good anti-corrosion function, but the traditional talc powder is produced by jet mill, and the particle size of talc powder produced by this equipment is relatively coarse, and the powder particles The shape is irregular, and the flake structure is damaged to a certain extent. When it is applied to ship anti-corrosion coatings, it will have a certain impact on the physical and chemical properties of the paint film, thus affecting the final anti-corrosion effect

Method used

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  • Preparation method of talcum powder used for ship anticorrosion coatings
  • Preparation method of talcum powder used for ship anticorrosion coatings
  • Preparation method of talcum powder used for ship anticorrosion coatings

Examples

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Effect test

Embodiment 1

[0031] A kind of preparation method of ship anticorrosion coating talcum powder is characterized in that, comprises the following steps:

[0032] (1) Raw ore crushing: Clean the talc ore, put it into the silo for primary crushing, and crush the large raw ore into talc ore with a diameter of about 5-10cm, and then enter the secondary crushing system through the bucket elevator. It is ground into gravel with a diameter of 0.5-1cm, which meets the feeding requirements of the vertical mill;

[0033] (2) Vertical grinding: Add 1.6% alkanolamide polyoxyethylene ether and 3.5% polyacrylic acid amine salt dispersant of raw material quality to the crushed stone obtained in step (1), enter the vertical grinding equipment by conveyor belt, and grind To 3500 mesh, get pretreated talc powder; the function of non-ionic surfactant and polyacrylic acid amine salt dispersant is to improve grinding efficiency and reduce energy consumption;

[0034] (3) Grading and sieving: put the powder obtai...

Embodiment 2

[0039] A kind of preparation method of ship anticorrosion coating talcum powder is characterized in that, comprises the following steps:

[0040] (1) Raw ore crushing: Clean the talc ore, put it into the silo for primary crushing, and crush the large raw ore into talc ore with a diameter of about 5-10cm, and then enter the secondary crushing system through the bucket elevator. It is ground into gravel with a diameter of 0.5-1cm, which meets the feeding requirements of the vertical mill;

[0041] (2) Vertical grinding: Add 2.8% fatty alcohol polyoxyethylene ether of raw material quality and 2.3% polyacrylic acid amine salt dispersant to the crushed stone obtained in step (1), enter the vertical grinding equipment by the conveyor belt, and grind to 3000 To obtain pretreated talc powder; the function of nonionic surfactant and polyacrylic acid amine salt dispersant is to improve grinding efficiency and reduce energy consumption;

[0042](3) Grading and sieving: put the powder ob...

Embodiment 3

[0047] A kind of preparation method of ship anticorrosion coating talcum powder is characterized in that, comprises the following steps:

[0048] (1) Raw ore crushing: Clean the talc ore, put it into the silo for primary crushing, and crush the large raw ore into talc ore with a diameter of about 5-10cm, and then enter the secondary crushing system through the bucket elevator. It is ground into gravel with a diameter of 0.5-1cm, which meets the feeding requirements of the vertical mill;

[0049] (2) vertical grinding: in the crushed stone that step (1) obtains, add the alkanolamide polyoxyethylene ether of raw material quality 3.6%, the polyalcohol surfactant of 1.0% and the polyacrylic acid amine salt dispersant of 2.1%, Enter the vertical grinding equipment through the conveyor belt, grind to a certain degree of 2500 mesh, and obtain pretreated talc powder; the function of nonionic surfactant and polyacrylic acid amine salt dispersant is to improve the grinding efficiency an...

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Abstract

The invention provides a preparation method of talcum powder used for ship anticorrosion coatings. The method comprises the following steps: 1, crushing raw ores to form 0.5-1 cm broken stones; 2, adding a nonionic surfactant and a polyacrylamide dispersant to the broken stones, adding the obtained mixture to a vertical grinding device, and grinding the mixture to obtain preprocessed talcum powder; 3, adding the powder to a multi-stage grading system, collecting powder with the fineness of 2500-3500 meshes through a cyclone collecting system, and sieving the powder with the fineness of 2500-3500 meshes by a 300-500 mesh sieve; 4, adding the obtained powder into a gravity mixing modifier, and adding a modifier to modify the powder, wherein eh modifier includes sodium stearate, a silane coupling agent, a zirconate aluminate coupling agent, a phosphate salt coupling agent and a polyethylene oxide surfactant; and 5, carrying out secondary sieving. The talcum powder used for ship anticorrosion coatings, with the advantages of fine and unfirom granularity and complete sheet structure, is prepared through the method.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of anticorrosion paint fillers, in particular to a preparation method of talc powder for ship anticorrosion paint. [0003] 【Background technique】 [0004] Traditional anti-corrosion coatings for ships mainly use sericite and ordinary talc powder as fillers. Sericite powder has excellent performance, but its oil absorption is higher than that of talcum powder, so the demand for additives is greater, and the price is also higher than that of talc powder; Although the price of ordinary talc powder is relatively low, and because of its flake structure, it has good anti-corrosion function, but the traditional talc powder is produced by jet mill, and the particle size of talc powder produced by this equipment is relatively coarse, and the powder particles The shape is irregular, and the flake structure is damaged to a certain extent. When it is applied to ship anti-corrosion coatings, it will have a certain impact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/04C09C3/12C09C3/08C09C3/10C09D5/08
CPCC09C3/006C09C3/041C09C3/08C09C3/10C09C3/12C09D5/08
Inventor 徐永华彭鹤松艾青甘昆秀周峰
Owner JIANGXI GUANGYUAN CHEM
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