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

A technology of methacryloxysilane coupling agent and methacryloxypropyltrimethoxysilane, which is applied in the treatment of dyed organosilicon compounds and fibrous fillers, and can solve problems such as undiscovered

Inactive Publication Date: 2008-12-17
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Abstract
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Problems solved by technology

After searching, no patent application or literature report on the process method of compound modification of m

Method used

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Effect test

Embodiment 1

[0040] The present invention adopts a kind of γ-methacryloyloxypropyltrimethoxysilane coupling agent and aluminate coupling agent composite modified microcrystalline muscovite (400 orders) process, and its process steps are as follows:

[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 gamma-methacryloxypropyltrimethoxysilane coupling agent, diluent comprises dehydrated alcohol and water, and its volume ratio is: dehydrated alcohol: water=8: 2, Use oxalic acid to adjust the pH value of the diluent to 3-4; the amount of diluent per kilogram of microcrystalline muscovite powder is 300ml.

[0043] (3) Weigh the γ-methacryloxypropyl trimethoxysilane coupling agent accounting for 1.0% by weight of the microcrystalline muscovite powder, and the γ-methacryloxypropyl trimethoxysilane Add it to the diluent solution prepared according to step (2), stir wel...

Embodiment 2

[0057] The present invention adopts a kind of γ-methacryloyloxypropyltrimethoxysilane and aluminate coupling agent composite modified microcrystalline muscovite (600 orders) process, the proportioning and The amount, type of coupling agent, and preparation method are similar to Example 1 of this patent, but the modified microcrystalline muscovite powder is 600 mesh, and the amount of γ-methacryloxypropyltrimethoxysilane is the microcrystalline muscovite 1.2% of the amount by weight, and the amount of aluminate is 1.0% of the amount by weight of microcrystalline muscovite. The viscosity and turbidity test data of the prepared modified microcrystalline muscovite product (600 mesh) are shown in Table 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

type

Amount of coupling agent

(%)

viscosity

(mpa·s)

T...

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Abstract

The invention relates to a technical method for complexly modifying micro-crystal muscovite powder by adopting a gamma-methyl propylene acyloxy 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-methyl propylene acyloxy 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-methyl propylene acyloxy propyl trimethoxy silicane coupling agent and the aluminate coupling agent. Compared with the micro-crystal muscovite powder modified by the single gamma-methyl propylene acyloxy propyl trimethoxy silicane coupling agent or the single aluminate coupling agent, the modified micro-crystal muscovite powder complexly has obviously improved compatibility with organic polymers, processing flow property and decentrality. Meanwhile, the infrared absorption spectroscopy of the modified micro-crystal muscovite products shows that the gamma-methyl propylene acyloxy 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 a certain way.

Description

1. Technical field [0001] The invention relates to a process method for compositely modifying microcrystalline muscovite powder by using a methacryloxysilane coupling agent and an aluminate coupling agent. Using microcrystalline muscovite as a raw material, using methacryloyloxysilane and aluminate as modifiers, and using a mechanochemical modification method to prepare high-quality microcrystalline muscovite active fillers, which 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 percen...

Claims

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Application Information

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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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