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Silane coupling agent composite as well as preparation method and use thereof

A technology of silane coupling agent and composition, which is applied in the field of silane coupling agent composition and its preparation and application, can solve the problem of inability to change the nanometer-level geometric structure of the powder surface, reduce friction between powder particles, and prevent long-term storage and other problems, to achieve the effect of preventing agglomeration, improving powder fluidity, and easy powder flow

Active Publication Date: 2013-08-21
刘荣翾 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the use of silane coupling agents in the surface treatment of inorganic powders still has the following problems: 1) Ordinary silane coupling agents can only chemically modify the treated inorganic powders at the molecular level, and cannot change the nano-level particles on the surface of the powders. geometric structure
Therefore, ordinary silane coupling agents are not very ideal for reducing friction between powder particles and improving powder fluidity
2) The powder treated with ordinary silane coupling agent is easy to agglomerate and cannot be stored for a long time

Method used

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  • Silane coupling agent composite as well as preparation method and use thereof
  • Silane coupling agent composite as well as preparation method and use thereof

Examples

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preparation example Construction

[0023] The preparation process of the polymer containing silicon and oxygen is represented by the production example:

[0024] Production example 1: Dissolve tetraethoxysilane in a mixture of deionized water and isopropanol, add ammonia water to polymerize, replace with isopropanol and concentrate to obtain a solid content of 30%, disperse in the solvent IPA containing silicon and oxygen Polymer 1, tested by gel permeation chromatography (GPC), the molecular weight of polymer 1 containing silicon and oxygen is about 7×10 5 , observed under a scanning electron microscope as three-dimensional spherical polymer particles with a molecular radius of about 10 nm.

[0025] Production example 2: Replace the 10nm acid-type silica sol produced by Fuzhou Sanbang Silicon Material Co., Ltd. with isopropanol and adjust it to a solution with a solid content of 30%, and then add 10% phenyl tris Surface treatment of methyl silane to obtain polymer 2 containing silicon and oxygen dispersed in ...

Embodiment 1

[0029] Embodiment 1: Dimethyldimethoxysilane and the silicon-containing and oxygen-containing polymer 1 dispersed in the solvent IPA obtained in Preparation Example 1 are divided into dimethyldimethoxysilane / silicon-containing and oxygen-containing polymer 1 is the molar ratio 4 / (7.0×10 -3 ) into a solution to obtain the silane coupling agent composition of Example 1.

Embodiment 2

[0030] Example 2: Dimethyldimethoxysilane and the silicon- and oxygen-containing polymer obtained in Example 1 were prepared as dimethyldimethoxysilane / silicon- and oxygen-containing polymer 1 in the presence of solvent MEK is the molar ratio 4 / (4.7×10 -4 ) into a solution, and the solvent was removed under reduced pressure to obtain the ultrahigh molecular weight silane coupling agent of Example 2.

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Abstract

The invention discloses a silane coupling agent composite as well as a preparation method and use thereof, belonging to the technical field of inorganic powder modification. According to the invention, the silane coupling agent composite comprises at least one silane coupling agent and an ultra-high molecular weight polymer containing silicon and oxygen, wherein the general formula of the ultra-high molecular weight polymer containing silicon and oxygen is SixOyRz; and R is a terminal group. By utilizing the silane coupling agent composite provided by the invention to modify the inorganic powder, the friction of relative movement among inorganic powder particles is alleviated, the powder mobility is increased, and a physical method and a chemical method are used to simultaneously carry out inorganic powder modification; a nanoscale air layer is present among the inorganic particles, so that the powder mobility is easy; the powders are prevented from being close to each other so as to effectively prevent caking; and an existing inorganic powder surface treatment device and process can be used and a special device and an additional production process are not needed so that the cost is lowered, and the silane coupling agent composite is particularly suitable for treating glass fiber powder, talcum powder, carbon powder, powder paint, mica and the like.

Description

technical field [0001] The invention belongs to the technical field of inorganic powder modification, in particular to a silane coupling agent composition used for inorganic powder modification, in particular to a silane coupling agent composition capable of forming a nanostructure on the surface of an inorganic powder. The surface treatment of inorganic powder can effectively improve the fluidity of inorganic powder, especially suitable for processing glass fiber powder, talcum powder, carbon powder, powder coating, mica, etc. Background technique [0002] Silane coupling agents can change the surface chemical properties of inorganic powders and have a long history in industry. By using silane coupling agent, a "molecular bridge" can be built between the interface of inorganic substances and organic substances, and the two materials with different properties can be connected together to improve the performance of composite materials and increase the bonding strength. [00...

Claims

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Application Information

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IPC IPC(8): C09C3/12C08K9/06
Inventor 陈克新刘荣翾崔巍
Owner 刘荣翾