Phosphate film-coated powder and preparation method thereof

A technology for coating powder and phosphate, applied in chemical instruments and methods, other chemical processes, addition of inorganic compounds, etc., can solve the problems of not mentioning the importance of acid-base reaction and the difficulty of dispersing ultrafine powder.

Inactive Publication Date: 2007-10-03
张义纲 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The book "Nanochemistry" published in April 2006, pages 58-65, described in detail the prior art of preparing nanoparticles by solid-phase method, which did not mention the importance of acid-base reaction, and even did not appear "acid-base reaction" these four words
These patents involving aluminum phosphate are all focused on solving the problem of difficult dispersion of ultrafine powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Take 100g of aluminum hydroxide, 29.5g of silicon dioxide, and 13.1g of aluminum phosphate, mix them evenly, pulverize them in a mechanical pulverizing device and undergo a solid-phase acid-base reaction, depolymerize and coat them at the same time, and dry them at 150°C to obtain Aluminum phosphate-coated mullite is used as a powder material in refractory materials and structural ceramics.

Embodiment 2

[0061] Take 100g of boric acid and 33.2g of zinc oxide, mix them evenly, pulverize them in a mechanical pulverizing device and undergo a solid-phase acid-base reaction, then add 4g of aluminum phosphate, 2.56g of aluminum hydroxide, and 1.34g of stearic acid, mix and pulverize the depolymerization package again Covered and dried at 110°C, the obtained aluminum phosphate-coated zinc borate is used as a flame retardant and reinforcing agent in plastics and rubber.

Embodiment 3

[0063] Take 100g of tin dioxide and 51.3g of zinc oxide, mix them evenly, pulverize them in a mechanical pulverizer and undergo a solid-phase acid-base reaction, then add 5.28g of aluminum phosphate, 3.53g of aluminum hydroxide, and 1.97g of stearic acid, mix and pulverize again Depolymerize and coat, and dry at 110°C. The obtained aluminum phosphate-coated zinc stannate is used as a flame retardant and reinforcing agent in plastics and rubber.

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Abstract

This invention relates to a method of preparing envelope powder. The shattering, depolymerization and coating processed at same time, and solid phase acid-base reaction participate the method. This envelope powder possess double-decker or three-layer structure, inner core is composed by oxide or hydrate or inorganic oxysalt, crust composed by inorganic oxysalt, envelope by aluminum phosphate or boron phosphate. This low cost powder be able to used as fortifier, power stuff, colorant and so on, applied to plastic, rubber, ceramics, dope, binder and paper, set foundation for popularization of ultramicro and nanometer powder.

Description

technical field [0001] The present invention relates to a surface-modified inorganic powder and a preparation method thereof, in particular to an inorganic powder coated with aluminum phosphate or boron phosphate coating on the surface and a preparation method thereof, and also to this powder as a filler Agents, reinforcing agents, colorants, rheological agents, adsorption carriers, powder materials used in inks, paints, coatings, rubber, plastics, resins, sealants, adhesives, lubricants, drilling mud, stationery, daily Used in chemicals, paper, textiles, ceramic materials, refractory materials, magnetic materials, electronic materials, electromagnetic wave shielding materials, and artificial biological tissues. Background technique [0002] The miniaturization of inorganic powders, the particle size is as fine as less than 1000 nanometers, or even less than 100 nanometers, which can obtain important size effects. On the other hand, the finer the particle size, the easier i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/06C09C1/00C04B35/628C09D7/12C09K3/10C09J11/04C09K8/00H05K9/00D21H17/63
Inventor 张义纲张渺
Owner 张义纲
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