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