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Method for composite modification of microcrystalline antonite powder using epoxy silane and aluminate

A technology of microcrystalline muscovite and composite modification, applied in the direction of dyeing organosilicon compound treatment, fibrous filler, etc., can solve the problem of undiscovered

Inactive Publication Date: 2011-05-11
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After searching, no patent application or literature report on the process method of compound modification of microcrystalline muscovite powder using epoxy silane coupling agent and aluminate coupling agent was found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preheat and dry the microcrystalline muscovite powder, the drying temperature is 110±5°C, and the drying time is 60 minutes;

[0042] (2) prepare the diluent solution of γ-(2,3-glycidoxy) propyl trimethoxysilane coupling agent, diluent comprises dehydrated alcohol and water, and its volume ratio is: dehydrated alcohol: water =8:2, the amount of diluent per kilogram of microcrystalline muscovite powder is 300ml;

[0043] (3) Weigh 1.0% gamma-(2,3-epoxypropoxy)propyltrimethoxysilane coupling agent that accounts for microcrystalline muscovite powder weight percent, and gamma-(2,3-epoxy Propoxy)propyltrimethoxysilane is added in the diluent solution prepared by step (2), fully stirred to make it hydrolyzed completely;

[0044] (4) Weigh the aluminate coupling agent accounting for 1.0% by weight of the microcrystalline muscovite powder, melt it at a temperature of 75±3°C, and store it at a temperature of 70°C for use;

[0045] (5) Spray the γ-(2,3-glycidoxy) propyltrim...

Embodiment 2

[0058] Table 2 Viscosity and turbidity of 600 mesh microcrystalline muscovite powder / white oil system modified by different coupling agents

[0059] Modified microcrystalline muscovite

[0060] From the data analysis of Table 2 and the analysis of activation index, wettability, and infrared absorption spectrum test data, a conclusion similar to that of Example 1 of this patent can be drawn, illustrating that γ-(2,3-epoxypropoxy)propyl trimethyl The effect of microcrystalline muscovite powder compound modified by oxysilane and aluminate is good.

[0061] Acknowledgments: This work was funded by the Sichuan Provincial Applied Basic Research Fund (02JY029-026-1).

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Abstract

The invention relates to a technical method for complexly modifying micro-crystal muscovite powder by adopting a gamma-(2, 3-epoxy propoxy) propyl trimethoxy silicane coupling agent and an aluminate coupling agent. The method of the invention takes the micro-crystal muscovite powder as raw material, and the gamma-(2, 3-epoxy propoxy) propyl trimethoxy silicane coupling agent and the aluminate coupling agent as modifiers, and utilizes a mechanochemical modification method to complexly modify the micro-crystal muscovite powder by the mutual winding and crosslinking functions of the gamma-(2, 3-epoxy propoxy) propyl trimethoxy silicane coupling agent and the aluminate coupling agent. Compared with the micro-crystal muscovite powder modified by the single gamma-(2, 3-epoxy propoxy) propyl trimethoxy silicane coupling agent or the single aluminate coupling agent, the complexly modified micro-crystal muscovite powder has obviously improved compatibility with organic polymers, processing flow property and decentrality. Simultaneously, the infrared absorption spectroscopy of the modified micro-crystal muscovite products shows that the gamma-(2, 3-epoxy propoxy) propyl trimethoxy silicane coupling agent and the aluminate coupling agent are coated on the surface of the micro-crystal muscovite powder and carry out coupling activation with the micro-crystal muscovite powder materials in acertain way.

Description

1. Technical field [0001] The invention relates to a process method for compositely modifying microcrystalline muscovite powder by using an epoxy silane coupling agent and an aluminate coupling agent. Using microcrystalline muscovite as a raw material, epoxy silane and aluminate as modifiers, and using a mechanochemical modification method to prepare high-quality microcrystalline muscovite active fillers belongs to the field of mineral materials. The modified microcrystalline muscovite product prepared by the invention is suitable for medium and high-grade fillers of composite materials such as rubber, plastics, coatings, adhesives, etc., so that the comprehensive performance of the composite material is significantly improved. 2. Technical Background [0002] Muscovite, also known as potassium mica, is the most widely distributed mineral in the mica group, and its crystal chemical formula is KAl 2 [AlSi 3 o 10 ][OH] 2 , where the weight percent of each composition is Si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/28C09C3/12
Inventor 叶巧明汪灵林金辉刘菁
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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