Inorganic oxide sol modified by using high molecular compound stabilizer and its preparing method

A technology of polymer compounds and inorganic oxides, applied in the preparation of oxides/hydroxides, chemical instruments and methods, chemical/physical processes, etc. problem, to achieve the effect of excellent performance and good stability

Inactive Publication Date: 2008-08-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because once the sol system loses stability during the hybridization process, the inorganic particles will coalesce and become larger, resulting in agglomeration, which will cause the size of the inorganic phase in the hybrid material to be too large, and phase separation will occur, which will affect the performance of the final hybrid material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In the zirconium dioxide sol system (zirconium dioxide accounts for 20wt% of the total amount of the sol, and the solvent is water), add 1 wt% of PEG (the average molecular weight is 1000) accounting for the total amount of the sol product, and heat and stir at normal pressure and 50°C , reflux, and take it out after 1 to 2 hours to obtain a stable zirconia sol.

Embodiment 2

[0019] In zirconium dioxide and aluminum oxide mixed sol system (zirconium dioxide accounts for 10wt% of sol total amount, aluminum oxide accounts for 10wt% of sol total amount, solvent is ethanol) and adds and accounts for sol product total amount and is 1wt% PVA (average The degree of polymerization is 2000), heated and stirred under normal pressure at 40° C., refluxed, and taken out after 1 to 2 hours to obtain a stable composite sol of zirconia and alumina.

Embodiment 3

[0021] In the silica sol system (silicon dioxide accounts for 25wt% of the total amount of the sol, the solvent is a mixture of water and ethanol, and the weight ratio of the two is 3:1), adding 0.5wt% PEG (average molecular weight 4000) and PVA (average degree of polymerization is 1000) accounting for 0.1wt% of the total amount of the sol product, heated and stirred under normal pressure at 60° C., refluxed, and taken out after 1 to 2 hours to obtain a stable silica sol.

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Abstract

This invention relates to an inorganic oxide sol modified by polymeric compound stabilizer and its preparation method including adding a polymeric compound in 0.01wt%-5wt% of the gross of a sol product into an inorganic oxide sol, refluxing and mixing them to get a modified inorganic oxide sol, which is fine in stability, and sol particles are not-agglomerated in long time of storage and its transparency is not changed.

Description

technical field [0001] The invention relates to an inorganic oxide sol, in particular to an inorganic oxide sol modified by a polymer compound stabilizer and a preparation method thereof. Background technique [0002] Organic-inorganic hybrid polymer materials have the advantages of both types of materials through the compounding of organic polymer materials and inorganic materials at the molecular level. For example, organic-inorganic hybrid materials have good heat resistance and rigidity of inorganic materials, and also have good processability and toughness of organic polymer materials. Especially when the size of the organic phase region and the inorganic phase region of the inorganic hybrid polymer material are in the nanometer range, this kind of precise mixing can make this kind of material excellent in optical transparency, adjustable refractive index, mechanical properties, high temperature resistance, Wear resistance, flexibility, functionality and other aspects ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B13/14C08L29/04C08L25/06B01J13/00
Inventor 王小群杜善义韦第升赵臻璐王晨
Owner BEIHANG UNIV
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