Preparation method of special modified mica powder for plastics and coatings

A mica powder, modified technology, applied in antifouling/underwater coatings, chemical instruments and methods, coatings, etc., can solve the problems of material performance decline, poor bonding force, interface defects, etc., to reduce oil absorption value, combine Enhanced strength, not easy to fall off

Inactive Publication Date: 2020-10-02
NANNING XIAYANG CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the fact that the surface of mica powder is hydrophilic and oleophobic, it is strongly polar, has a large specific area and high surface free energy, and is prone to agglomeration, so it is difficult to disperse evenly in plastic and coating substrates, and particle separation is prone to occur. The agglomeration phenomenon between them, the binding force between plastic and coating substrates is very poor, it is easy to cause interface defects, easy to fall off and lead to material performance degradation

Method used

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  • Preparation method of special modified mica powder for plastics and coatings

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of special modified mica powder for plastics and coatings, comprising the steps of:

[0024] S1: Clean the muscovite, crush it to 60 mesh, sieve, add 5 times its mass of hot water at 60°C and keep stirring to obtain mica slurry;

[0025] S2: Add starch, melamine, octaaminophenyl clathrate silsesquioxane, polyethylene glycol esterified lanolin and maleic acid in a mass ratio of 8:4:2:1:1 to the mica slurry A modifying agent composed of sodium di-sec-octyl sulfonate carries out surface modification, and the add-on of said modifying agent is 3.4% of the mica powder quality, obtains modified mica slurry;

[0026] S3: The modified mica slurry is filtered and dehydrated through a filter press, and then added to the powder modification machine, adding trichlorohydroxydiphenyl ether, cinnamaldehyde and benzyl dimethyl decathene at a mass ratio of 3:1:1 The antibacterial agent that hexaalkylammonium chloride is formed carries out secondary modification, and...

Embodiment 2

[0028] A preparation method of special modified mica powder for plastics and coatings, comprising the steps of:

[0029] S1: Clean the muscovite, crush it to 80 mesh, sieve, add 70°C hot water four times its mass and keep stirring to obtain mica slurry;

[0030] S2: Add starch, melamine, octaaminophenyl clathrate silsesquioxane, polyethylene glycol esterified lanolin and maleic acid in a mass ratio of 6:4:3:1:1 to the mica slurry A modifying agent composed of sodium di-sec-octyl sulfonate is used for surface modification, and the addition of the modifying agent is 3.0% of the mica powder quality to obtain a modified mica slurry;

[0031] S3: The modified mica slurry is dehydrated through a filter press, and then added to a powder modification machine, adding trichlorohydroxydiphenyl ether, cinnamaldehyde and benzyl dimethyl decathene at a mass ratio of 5:2:1 The antibacterial agent that hexaalkylammonium chloride is formed carries out secondary modification, and the add-on of...

Embodiment 3

[0033] A preparation method of special modified mica powder for plastics and coatings, comprising the steps of:

[0034] S1: Clean the muscovite, crush it to 60 mesh, sieve, add 5 times its mass of hot water at 70°C and keep stirring to obtain mica slurry;

[0035] S2: Add starch, melamine, octaaminophenyl clathrate silsesquioxane, polyethylene glycol esterified lanolin and maleic acid in a mass ratio of 7:5:2:1:3 to the mica slurry A modifying agent composed of sodium di-sec-octyl sulfonate carries out surface modification, and the add-on of said modifying agent is 2.4% of mica powder quality, obtains modified mica slurry;

[0036] S3: The modified mica slurry is filtered and dehydrated through a filter press, and then added to the powder modification machine, adding trichlorohydroxydiphenyl ether, cinnamaldehyde and benzyl dimethyl decathene at a mass ratio of 3:2:2 The antibacterial agent that hexaalkylammonium chloride is formed carries out secondary modification, and the...

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Abstract

The invention discloses a preparation method of special modified mica powder for plastics and coatings, which comprises the following steps: cleaning mica powder, pulverizing and screening the mica powder, adding hot water, and continuously stirring the mixture to obtain mica slurry; adding a modifier consisting of starch, melamine, octaaminophenyl polyhedral oligomeric silsesquioxane, polyethylene glycol esterified lanolin and sodium di-sec-octyl maleate sulfonate into the mica slurry for surface modification to obtain modified mica slurry; adding the mica powder into a reaction kettle, carrying out filter pressing dehydration by a filter press, adding the dehydrated mica powder into a powder modifier, adding an antibacterial agent composed of trichlorohydroxydiphenyl ether, cinnamyl aldehyde and benzyl dimethyl hexadecyl ammonium chloride, carrying out secondary modification, and drying and crushing the obtained product to obtain the antibacterial mica powder for plastics and paints.The mica powder prepared by the method provided by the invention not only has good dispersibility and processability, but also has good compatibility with plastic coatings, the binding force of the interface between the mica powder and the plastic coatings is enhanced, the mica powder has good antibacterial and bacteriostatic properties, and the market value of the product is improved.

Description

technical field [0001] The invention relates to the technical field of preparing inorganic non-metallic minerals, in particular to a method for preparing modified mica powder specially used for plastics and coatings. Background technique [0002] Mica is a general term for mica group minerals. It is an aluminosilicate of metals such as potassium, aluminum, magnesium, iron, and lithium. It is a layered structure and a monoclinic crystal system. The most common minerals in the mica group minerals are biotite, muscovite, phlogopite, lepidolite, sericite and so on. The crystal is in the form of pseudo-hexagonal sheet or plate, and occasionally columnar. Mica has very high insulation and heat insulation performance, good chemical stability, and has the ability to resist strong acid, strong alkali and compression. Widely used in electrical appliances, welding electrodes, rubber, plastics, paper, paint, coatings, pigments, ceramics, cosmetics, new building materials and other indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/12C09C3/10C09C3/08C09C3/04C08L27/06C08L91/06C08K13/06C08K9/10C08K9/04C08K9/06C08K3/34C09D7/62C09D5/14
CPCC01P2006/19C01P2006/22C08K3/34C08K9/04C08K9/06C08K9/08C08K9/10C08L27/06C09C1/405C09C3/006C09C3/04C09C3/043C09C3/08C09C3/10C09C3/12C09D5/14C09D7/62C08L91/06C08K13/06
Inventor 韦明
Owner NANNING XIAYANG CHEM TECH CO LTD
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