Soft chemical preparation method for hollow glass micro-balloon, prepared hollow glass micro-balloon and application thereof

A hollow glass microsphere, soft chemical technology, applied in the field of soft chemical method, can solve the problems of high cost, low energy consumption, difficult to control particle size distribution and the like

Active Publication Date: 2012-07-18
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the high energy consumption of the solid-phase glass powder method for preparing hollow glass microspheres in the past, the long process cycle, the difficult control of particle size distribution, the high cost and the large alkalinity and high alkalinity of the hollow glass microspheres prepared by the liquid phase atomization method. Easy to absorb water, low strength, and easy to break many defects, provide a soft chemical preparation method of hollow glass microspheres, the method has low energy consumption, the process does not have a high-temperature melting process; no crushing, grinding, classification, melting and sintering; short process flow and low cost , high yield, volume floating rate greater than 90%

Method used

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  • Soft chemical preparation method for hollow glass micro-balloon, prepared hollow glass micro-balloon and application thereof
  • Soft chemical preparation method for hollow glass micro-balloon, prepared hollow glass micro-balloon and application thereof
  • Soft chemical preparation method for hollow glass micro-balloon, prepared hollow glass micro-balloon and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The first step is the synthesis of the feed-liquid system of hollow glass microspheres:

[0042] Mix 4000g slurry containing 600g fumed silica and 485g sodium silicate solution (containing 121g of silicon dioxide and 39g of sodium oxide) with 517g containing 60g of borax, 60g of sodium nitrate, 90g of calcium carbonate, 40g of magnesium chloride, and 40g of potassium nitrate 1. The aqueous solution of 20g of lithium carbonate is prepared into a water slurry material, and then it is fully mixed with a high-speed mixer at 30°C and normal pressure, and after reaction, 200ml of high molecular polymer glue containing 10g of stable dispersant polyethylene oxide is added , Grinding by a colloid mill to form a homogenized slurry, so that the particle size of the solid particles in the slurry is at least less than 2 microns. Wherein, gas-phase silica and sodium silicate account for 15.2% by weight in the feed liquid, inorganic salts account for 6.2% by weight in the feed liquid,...

Embodiment 2

[0046] The first step is the synthesis of the feed-liquid system of hollow glass microspheres:

[0047] Prepare 4000g of slurry containing 600g of gas-phase self-carbon black and 364g of sodium silicate solution (containing 91g of silicon dioxide and 29g of sodium oxide) and 350g of aqueous solution containing 40g of borax, 60g of sodium sulfate, 90g of calcium nitrate, and 20g of potassium nitrate Form a water slurry material, then fully mix it with a high-speed mixer at 30°C and normal pressure, after reaction, add 200ml of high-molecular polymer glue containing 5.5g of stable dispersant polyethylene oxide, and grind it through a colloid mill to form Homogenized slurry, so that the particle size of solid particles in the slurry is at least less than 2 microns. Wherein, gas-phase silica and sodium silicate account for 15.3% by weight in the feed liquid, inorganic salts account for 4.5% by weight in the feed liquid, and stable dispersants account for 0.12% by weight in the fee...

Embodiment 3

[0051] The first step is the synthesis of the feed-liquid system of hollow glass microspheres:

[0052] Mix 3333g slurry containing 500g fumed silica and 198g sodium potassium silicate solution (containing 53.3g of silicon dioxide, 8.9g of sodium oxide, and 17.8g of potassium oxide) with 440g of 60g of boric acid, 50g of sodium sulfate, and 90g of calcium carbonate , 20g of magnesium sulfate aqueous solution is prepared into a water slurry material, and then it is fully mixed with a high-speed mixer at 80°C and normal pressure, and after reaction, add a high molecular polymer glue containing 5.0g of a stable dispersant polyethylene oxide 200ml, through the colloid mill to form a homogenized slurry, so that the particle size of the solid particles in the slurry is at least less than 2 microns. Wherein, gas-phase silica and potassium sodium silicate account for 14.6% by weight in the feed liquid, inorganic salts account for 5.5% by weight in the feed liquid, and stable dispersan...

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Abstract

The invention belongs to the technical field of a soft chemical method. According to the invention, the method is used for overcoming the defects that the traditional solid-phase glass powder method for preparing a hollow glass micro-balloon is high in energy consumption, long in technical process and difficult in controlling grain size distribution and the hollow glass micro-balloon prepared according to a liquid-phase atomizing method is high in alkalinity, easy to absorb water, high in strength and easy to break, and the like. A liquid material system is compounded through a chemical reaction; after the system is homogenized, the system is quickly atomized, dewatered and dried, thereby obtaining approximate spherical precursor powder with required grain size and corresponding distribution; and the powder is treated under high temperature at 600-1100 DEG C, thereby obtaining a micron-scale hollow glass micro-balloon with the volume floating rate being above 90%, the SiO2 content (weight) being 55-88%, the true density being 0.1-0.7g/cm<3> and the compression strength being 1-50MPa. The method is low in energy consumption, free from fusion and sintering, and high in yield. The prepared hollow glass micro-balloon is high in compression strength, light in weight, low-alkali, waterproof, excellent in fluidity and dispersibility, and suitable for various high-performance light compound materials.

Description

technical field [0001] The invention belongs to the technical field of soft chemical methods, in particular, the invention relates to a method of preparing hollow glass microspheres by using silicon dioxide and / or silicate solution, sol or water slurry, and the prepared hollow glass microspheres and its application. Background technique [0002] Hollow Glass Microsphere HGM (Hollow Glass Microsphere) is a light particle powder material with a spherical hollow structure with a particle size of micron. It has heat insulation, insulation, sound insulation, high strength, wear resistance, corrosion resistance, radiation protection, and water absorption. Low rate, chemical stability, excellent fluidity and dispersion. It is chemically composed mainly of silicate glass systems, usually preferably of alkali metal or alkaline earth metal borosilicate systems with some oxide additions. In recent years, its application fields are very extensive, and the main application fields are: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/10C03C12/00
Inventor 张敬杰宋广智崔燕菲张连水杨岩峰潘顺龙
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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