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 r

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
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Example Embodiment

[0028] Example 1:

[0029] Weigh 100g of calcium-based montmorillonite, 1g of dodecyltrimethylammonium chloride (DTAC) and 5g of coupling agent vinyltriethoxysilane, mix them together, stir and react in a solid phase at 100℃ for 240min; The organic montmorillonite is obtained after the reaction product is discharged, which is recorded as DTAC-151.

[0030] Add various compounding agents and vulcanizing agents and the organic montmorillonite obtained above 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, SBR / DTAC-151 composites were prepared with different amounts of DTAC-151 and styrene butadiene rubber, and the vulcanized rubber properties were tested. After the rubber compound is parked for one night, vulcanize, prepare test strips according to relevant test standards ...

Example Embodiment

[0034] Example 2

[0035] Weigh 100g calcium-based montmorillonite, 10g dodecyltrimethylammonium chloride (DTAC) and 3g coupling agent bis[3-(triethoxysilyl)propyl]tetrasulfide and mix them together. The solid-phase stirring reaction was carried out at 100°C for 120 minutes; the organic montmorillonite obtained by discharging the above reaction product was recorded as DTAC-si69.

[0036] According to the formula of Example 1, SBR / DTAC-si69 composite materials were prepared with different amounts of DTAC-si69 and styrene butadiene rubber, and the properties of the vulcanized rubber were tested. It can be seen from Table 2 that the mechanical properties of styrene-butadiene rubber / organic modified montmorillonite composite materials show that the addition of DTAC-si69 makes the mechanical properties of composite materials significantly better than styrene-butadiene rubber / unmodified montmorillonite and pure styrene-butadiene rubber. . figure 2 It is the XRD pattern of styrene-butadi...

Example Embodiment

[0037] Example 3

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

[0039] Take 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 parts of accelerator DM; sulfur 1.5 parts; 6 parts of montmorillonite, prepared composite material, vulcanized after parking overnight, vulcanization condition 143℃×normal vulcanization time (t 90 ). The properties of the composite material vulcanizate prepared in Example 3 are shown in Table 3 for the mechanical properties of natural rubber / organic montmorillonite. It can be seen from Table 3 that the addition of organic montmorilloni...

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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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