Rear-earth surface-modified hollow glass microsphere and preparation method thereof

A hollow glass microsphere and surface modification technology, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of high cost, long process flow, unsuitable for large-scale industrialization, etc., and achieve low cost , the process is simple, the effect of improving the interface compatibility

Active Publication Date: 2011-04-20
HEBEI BEISU PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the effect of this type of method is very obvious, its process flow is

Method used

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  • Rear-earth surface-modified hollow glass microsphere and preparation method thereof
  • Rear-earth surface-modified hollow glass microsphere and preparation method thereof
  • Rear-earth surface-modified hollow glass microsphere and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0025] Example 1: 100 parts of hollow glass beads with an average particle diameter of 5 μm are stirred at 300 to 600 revolutions per minute in 300 parts of 0.1 mol / l sodium hydroxide solution at 80°C for 1 hour, and then filtered for use; 0.9g of lanthanum nitrate was fully dissolved in 299.1g of distilled water to prepare a 0.3% lanthanum nitrate solution; then the pretreated hollow glass beads were directly added to the rare earth solution, stirred to make it fully dispersed, The stirring time is controlled to be 15-20 minutes, and the stirring rate is controlled to 300-600 revolutions per minute. After the stirring is stopped, let it stand for 3 hours, then filter, wash with distilled water and dry for 2 hours at 100-120°C to obtain a modified product. Hollow glass beads.

Example Embodiment

[0026] Example 2: 100 parts of hollow glass beads with an average particle diameter of 10 μm are stirred at 300 to 600 revolutions per minute in 300 parts of 0.4 mol / l sodium hydroxide solution at 80°C for 1 hour, and then filtered for use; 3.6g of cerium nitrate was fully dissolved in 296.4g of distilled water to prepare a 1.2% cerium nitrate solution; then the pretreated hollow glass beads were directly added to the rare earth solution, stirred to make it fully dispersed, The stirring time is controlled to be 15-20 minutes, and the stirring rate is controlled to 300-600 revolutions per minute. After the stirring is stopped, let it stand for 3 hours, then filter, wash with distilled water and dry for 2 hours at 100-120°C to obtain a modified product. Hollow glass beads.

[0027] In order to test the modification effect, the hollow glass microbeads prepared without surface treatment and prepared by the surface treatment method of the present invention are blended with polypropyle...

Example Embodiment

[0028] Example 3: 100 parts of hollow glass beads with an average particle diameter of 30 μm are stirred at 300 to 600 revolutions per minute in 300 parts of 0.5 mol / l sodium hydroxide solution at 80°C for 1 hour, and then filtered for use; 6.0g of yttrium nitrate was fully dissolved in 294.0g of distilled water to prepare a 2.0% yttrium nitrate solution; then the pretreated hollow glass beads were directly added to the rare earth solution, stirred to make it fully dispersed, The stirring time is controlled to be 15-20 minutes, and the stirring rate is controlled to 300-600 revolutions per minute. After the stirring is stopped, let it stand for 3 hours, then filter, wash with distilled water and dry for 2 hours at 100-120°C to obtain a modified product. Hollow glass beads.

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Abstract

The invention provides a rear-earth surface-modified hollow glass microsphere and a preparation method thereof. The rear-earth surface-modified hollow glass microsphere is prepared from the following raw materials: hollow glass microsphere, sodium hydroxide and rare earth compound in parts by mass: 100 parts of hollow glass microsphere, 300 parts of sodium hydroxide solution and 300 parts of rare-earth aqueous solution, wherein the hollow glass microsphere has the compression strength larger than 40MPa and the average grain size of 5-80 microns, the sodium hydroxide solution has the mol concentration of 0.1-0.5 mol/l, and the rear earth is one of cerous nitrate, cerium chloride, lanthanum nitrate, lanthanum chloride, yttrium nitrate or yttrium chloride and is 0.3-2.0 percent by mass of the rare-earth aqueous solution. The preparation method comprises the following steps of: firstly, arranging the hollow glass microsphere in the low-concentration sodium hydroxide solution to increase the hydroxyl radical number and the roughness on the surface of the hollow glass microsphere; and then, adding to a rare-earth metal salt solution to modify, wash and dry. The invention has simple process, high efficiency and low cost, and the treated hollow glass microsphere is added to a polymer to remarkably improve the interfacial compatibility between a filler and a substrate, and the hollow glass microsphere modified by the method can be widely applied to the special composite material fields, such as aerospace, wind power generation, vehicles, buildings, heat insulation, sound insulation, and the like.

Description

technical field [0001] The invention relates to the surface modification of inorganic fillers for polymers, in particular to a rare earth surface-modified hollow glass microsphere and a preparation method thereof. Background of the invention [0002] Hollow glass microspheres, known as "space age materials", are a new type of spherical, hollow, and gas-containing new multifunctional fine glass body. Good insulation, low density, good fluidity, small shrinkage, strong stability, heat insulation, sound insulation, high temperature resistance, thermal conductivity and thermal shrinkage coefficient, etc., so it is widely used in aerospace, automotive, wind power Power generation, construction, heat insulation, sound insulation and other polymer composite materials fields. However, hollow glass microspheres are inorganic polar fillers. If they are directly added to non-polar polymer substrates without surface treatment, the mechanical properties of composite materials will be se...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/06C08K9/02C08K7/28
Inventor 许鑫华吴湘锋李军伟杨志强刘峰
Owner HEBEI BEISU PIPE IND
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