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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
  • 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 methacryloxysilane coupling agent and aluminate coupling agent was found

Method used

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Examples

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Comparison scheme
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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