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Modified vinyl silane as well as preparation method and application thereof

A technology of vinyl silane and dimethyl siloxane, which is applied in the field of modified vinyl silane and its preparation, can solve the problems of weak powder dispersibility, reduced physical properties, and unstable performance, so as to improve grafting ability , Powder dispersion is good, the effect of improving stability

Pending Publication Date: 2022-07-29
SHANDONG GUIKE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of silane coupling agents are also obvious, such as insufficient oiliness. When it is applied to organic-inorganic hybrid materials, it will lead to weak dispersibility of the modified powder and unstable performance, thereby reducing some physical properties of the material. properties such as dielectric constant, toughness and elasticity

Method used

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  • Modified vinyl silane as well as preparation method and application thereof
  • Modified vinyl silane as well as preparation method and application thereof
  • Modified vinyl silane as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0042] The present invention provides the preparation method of the modified vinyl silane described in the above technical solution, comprising the following steps:

[0043] Mixing vinyl silane, modifying reagent, catalyst and water to carry out modification reaction to obtain modified vinyl silane;

[0044] The vinylsilane includes vinyltrialkoxysilane; the vinyltrialkoxysilane includes vinyltrimethoxysilane, vinyltriethoxysilane, vinyltripropoxysilane or vinyltrialkoxysilane isopropoxysilane;

[0045] The modifying reagent includes silicone oil or dimethylsiloxane ring;

[0046] The silicone oil has the structure of formula II:

[0047] m=1~50;

[0048] The dimethylsiloxane ring body has the structure shown in formula III:

[0049] n=2-8.

[0050] In the present invention, unless otherwise specified, the required preparation raw materials are all commercially available products well known to those skilled in the art.

[0051] The present invention mixes vinylsilane...

Embodiment 1

[0070] 100kg vinyl triethoxysilane was pumped into the 500L reactor, then 50kg DMC (dimethylsiloxane ring body) was added, the temperature was raised to 60°C, and 5kg water and 0.015kg hydroxide were added dropwise to the resulting mixture. The mixed solution of potassium was added dropwise for 0.5h, and the temperature was kept at 70°C for 3h. Sampling and analysis showed that the vinylsilane content in the product was less than 10%. The temperature was raised to 80°C, and the total amount of ethanol was extracted to 25kg. The obtained product was cooled and filtered. , to obtain 130kg of colorless and transparent modified vinyl silane product with a product viscosity of 5mPa / s;

[0071] The structural formula of the modified vinyl silane prepared in this example is:

[0072] x=2.

Embodiment 2

[0074] 100kg vinyl triethoxysilane was pumped into the 500L reactor, then 50kg DMC (dimethylsiloxane ring body) was added, the temperature was raised to 60°C, and 10kg water and 0.03kg hydroxide were added dropwise to the resulting mixture. The mixed solution of potassium was added dropwise for 1 h; the temperature was kept at 70 °C, the reaction was carried out for 3 h, and the content of vinylsilane in the product was less than 10%. , the finished product is 110kg, and the product viscosity is 20mPa / s;

[0075] The structural formula of the modified vinyl silane prepared in this example is:

[0076] x=4.

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Abstract

The invention provides modified vinyl silane as well as a preparation method and application thereof, and belongs to the technical field of organic silicon materials. Oily groups (silicone oil groups or ring-opening groups of dimethyl siloxane ring bodies) are grafted to vinyl silane, the obtained modified vinyl silane is increased in oiliness, low in viscosity and enhanced in dispersity, and when the modified vinyl silane serves as a coupling agent to be used for organic and / or inorganic powder, the modified powder is good in dispersity and good in mechanical property. The modified material can be uniformly and stably grafted to organic and / or inorganic powder, so that the stability of the modified material is improved. According to the preparation method of the modified vinyl silane, the vinyl silane and the modifying reagent are subjected to rearrangement reaction under the action of the catalyst, the modifying reagent is large in oiliness and high in dispersity, the dispersing capacity of the modified vinyl silane can be enhanced, the grafting capacity of the modified vinyl silane in organic and / or inorganic powder can be improved, and the modified vinyl silane can be used for preparing the organic and / or inorganic powder. The binding force between the modified vinyl silane and organic and / or inorganic powder when the modified vinyl silane is used as a coupling agent is enhanced.

Description

technical field [0001] The invention relates to the technical field of organic silicon materials, in particular to a modified vinyl silane and a preparation method and application thereof. Background technique [0002] Vinyl silane coupling agent is relatively simple in structure, the structural formula is R-Si-O-X, which is characterized by amphoteric ability, which can combine organic materials (such as polyethylene or polyvinyl chloride) and inorganic materials (such as magnesium hydroxide, carbonic acid) calcium, titanium dioxide or silica) organically linked together. However, the shortcomings of silane coupling agents are also obvious, such as insufficient oiliness. When they are applied to organic-inorganic hybrid materials, the modified powder will have weak dispersibility and unstable performance, thereby reducing some physical properties of the material. Properties such as dielectric constant, toughness and elasticity. SUMMARY OF THE INVENTION [0003] The obje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08G77/38C09C1/02C09C3/12
CPCC07F7/1804C07F7/188C08G77/38C09C1/028C09C3/12C08G77/20C08K5/5425C08G77/04C08G77/045C08G77/10C08L83/04
Inventor 孔凡振渠源杨甜甜孔令刚李杭杭卢海峰齐士林李朋涛
Owner SHANDONG GUIKE NEW MATERIAL CO LTD
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