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Solid phase preparation and use of organic modified calcium based montmorillonite

A technology of solid-phase preparation and organic modifier, applied in the field of organic modification of calcium-based montmorillonite, can solve the problems of unfavorable popularization, large energy consumption, complicated process and the like, achieves good industrial application value and low production cost , the effect of a wide range of raw materials

Inactive Publication Date: 2009-07-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, aiming at the disadvantages of traditional montmorillonite organic modification process that requires a large amount of water to disperse, resulting in complex process, high consumption of raw materials and energy, high cost, environmental pollution, and unfavorable promotion and use, a simple and feasible solid Organic modification method of calcium-based montmorillonite by phase method

Method used

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  • Solid phase preparation and use of organic modified calcium based montmorillonite
  • Solid phase preparation and use of organic modified calcium based montmorillonite
  • Solid phase preparation and use of organic modified calcium based montmorillonite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 100g of calcium-based montmorillonite, 1g of dodecyltrimethylammonium chloride (DTAC) and 5g of coupling agent vinyltriethoxysilane and mix them together, and react with solid phase stirring at 100°C for 240min; The reaction product is discharged to obtain organic montmorillonite, which is denoted as DTAC-151.

[0030] Add various compounding agents and vulcanizing agents and the above-mentioned organic montmorillonite according to the following formula. The formula is: 100 parts of styrene-butadiene rubber (SBR), 2 parts of stearic acid; 5 parts of zinc oxide; 1.5 parts of accelerator CZ; Agent DM 0.5 parts; sulfur 2 parts; montmorillonite variable. According to this formula, the SBR / DTAC-151 composite material was prepared by using different amounts of DTAC-151 and styrene-butadiene rubber, and the properties of the vulcanizate were tested. After the mixed rubber was parked overnight, it was vulcanized, and the test specimens were prepared according to the rele...

Embodiment 2

[0035] Take by weighing 100g calcium-based montmorillonite, 10g dodecyltrimethylammonium chloride (DTAC) and 3g coupling agent bis[3-(triethoxysilyl) propyl group] tetrasulfide and mix together, in Stir the reaction in solid phase at 100°C for 120 minutes; discharge the above reaction product to obtain organic montmorillonite, which is designated as DTAC-si69.

[0036] According to the formulation of Example 1, different amounts of DTAC-si69 and styrene-butadiene rubber were used to prepare SBR / DTAC-si69 composite materials, and the properties of the vulcanized rubber were tested. From the mechanical properties of the styrene-butadiene rubber / organically modified montmorillonite composite in Table 2, it can be seen that the addition of DTAC-si69 makes the mechanical properties of the composite significantly better than that of styrene-butadiene rubber / unmodified montmorillonite and pure styrene-butadiene rubber . figure 2 It is the XRD spectrum of the styrene-butadiene rubbe...

Embodiment 3

[0038] Weigh 100g of calcium-based montmorillonite, 20g of tetraethylenepentamine, and 1g of coupling agent vinyltriethoxysilane, mix them together, and stir and react in solid phase at 80°C for 240min; discharge the above reaction product to obtain organic montmorillonite off the soil.

[0039] Get 6g of the organic montmorillonite prepared in Example 3, according to the basic formula of the rubber compound: 100 parts of natural rubber NR, 2 parts of stearic acid; 5 parts of zinc oxide; 1.5 parts of accelerator CZ; 0.5 part of accelerator DM; 1.5 parts; 6 parts of montmorillonite, the composite material was prepared, vulcanized after parking overnight, the vulcanization condition was 143°C × normal vulcanization time (t 90 ). The performance of the vulcanizate of the composite material prepared in Example 3 is shown in Table 3. The mechanical properties of natural rubber / organic montmorillonite. It can be seen from Table 3 that the addition of organic montmorillonite has sig...

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Abstract

The invention discloses a method for preparing organic montmorillonite by using solid phase modified Ca-montmorillonite, specifically, the Ca-montmorillonite and a modifier or a mixed modifier are stirred for reaction at high temperature and modified to obtain the organic montmorillonite in solid phase powered state. The obtained organic montmorillonite can be directly applied to a plurality of polymer materials and can realize the intercalation of rubber macromolecule chains in mixing and vulcanizing process. Verified by mechanical property, properties of the obtained composite material, such as tensile strength, modulus, elongation at break and the like, are boosted and excellent. The method has the advantages of wide source of raw materials, handiness and feasibility, low production cost, no need of water or solvent and no environment pollution, with wide industrial application prospect.

Description

technical field [0001] The invention relates to the field of organic modification of calcium-based montmorillonite, in particular to a solid phase preparation method and application of organically modified calcium-based montmorillonite. Background technique [0002] Montmorillonite is a mineral filler with abundant reserves in my country. It is a natural layered silicate inorganic material with nano-sheet structure. Utilizing the characteristics of nanosheet structure of montmorillonite, on the basis of organic modification of its interlayer surface, through appropriate intercalation composite method, it can be combined with plastic, rubber and other polymer materials to form polymer / inorganic substances nanocomposites. Because polymer / montmorillonite nanocomposites have significantly better mechanical properties, heat resistance, barrier properties, aging resistance, flame retardancy, etc. than corresponding polymer materials, and montmorillonite is easy to source and low ...

Claims

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Application Information

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IPC IPC(8): C09C3/08C08K9/04C08L101/00
Inventor 陈玉坤贾德民陈树柏
Owner SOUTH CHINA UNIV OF TECH
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