Modified montmorillonoid, preparation method and composite material

A composite material and montmorillonite technology, applied in the field of inorganic fillers, can solve the problems such as no biological method precedent, and achieve the effects of improving the activity of montmorillonite, improving surface roughness, tensile strength and elongation at break.

Inactive Publication Date: 2019-01-25
山西山明硅科新材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there is no precedent for the modification of montmorillonite by biological methods

Method used

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  • Modified montmorillonoid, preparation method and composite material
  • Modified montmorillonoid, preparation method and composite material
  • Modified montmorillonoid, preparation method and composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of modified montmorillonite, comprising:

[0039] adding montmorillonite and deionized water into the culture medium for sulfate-reducing bacteria, and mixing evenly, wherein the amount of montmorillonite added is 80%, and the amount of deionized water added is 90% of the total mass of the medium;

[0040] Add 25% of the total mass of sulfate-reducing bacteria to the above-mentioned sulfate-reducing bacteria culture medium, and culture with shaking at 30°C for 168 hours under anaerobic or a small amount of oxygen environment;

[0041] After the cultivation is completed, the solid-liquid separation is carried out, and the modified montmorillonite is obtained by drying.

Embodiment 2

[0043] In this example, the difference from Example 1 is that the addition amount of montmorillonite is 80%, the addition amount of deionized water is 5%, the addition amount of sulfate-reducing bacteria is 1%; 0 ℃ shaking culture 3h .

Embodiment 3

[0045] In this example, the difference from Example 1 is that the addition of montmorillonite is 1%, the addition of deionized water is 20%, the addition of sulfate-reducing bacteria is 50%; 60 ° C shaking culture 168h .

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Abstract

The invention discloses a preparation method of modified montmorillonoid and modified montmorillonoid prepared by virtue of same as well as a modified montmorillonoid composite material. The modifiedmontmorillonoid is prepared by culturing montmorillonoid and microorganisms in a microorganism culture medium, separating solid from liquid, and finally drying the montmorillonoid. The montmorillonoidis expanded in a microorganism culture solution, the microorganisms, metabolites of the microorganisms (extracellular polymeric substances) and metal ions among the montmorillonoid layers react withone another, the distance among the montmorillonoid layers is increased, the montmorillonoid layers are even separated from one another, and the microorganisms and the metabolites form a compact organic membrane on the surface of a nanometer layer, so that the surface lipophilicity can be improved; and in addition, after the microorganisms are immobilized on the surface of the montmorillonoid, themicroorganisms react with cations, so that dense pores are formed on the surface and inside the montmorillonoid, the surface roughness can be improved, the porosity and the specific surface area canbe increased, and the activity of the montmorillonoid can be improved.

Description

technical field [0001] The invention relates to the technical field of inorganic fillers, in particular to a modified montmorillonite, a preparation method of the modified montmorillonite, and a modified montmorillonite composite material prepared by using the modified montmorillonite. Background technique [0002] In polymer chemical industry, fillers are the most used additives, and almost all plastics, rubbers and coatings use a large amount of fillers. Among them, polymer / clay nanocomposites have excellent mechanical properties, thermal stability, gas barrier properties, flame retardancy and electrical conductivity, etc., and have incomparable advantages over traditional polymer / inorganic filler composites. Among them, montmorillonite is a natural mineral with special chemical composition and crystal structure, so it has many unique properties such as swelling, dispersion, suspension, cohesiveness and cation exchange. Using these properties, montmorillonite It has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/34C08L23/12C08L7/00
CPCC08K3/346C08K9/04C08L2201/08C08L23/12C08L7/00
Inventor 刘永明王军磊彭卓刘宇刘清亭熊紫薇马成斌张冬
Owner 山西山明硅科新材有限公司
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