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Method for preparing double-cage POSS (Polyhedral Oligomeric Silsesquioxane) by solvothermal method

A solvothermal method and double-cage technology, which is applied in the synthesis field of double-cage POSS by solvothermal method, can solve the problems of cage-type POSS such as long reaction time, complex reaction system, and high toxicity in use, and achieve rich variety and performance Diverse, well-defined structures, and easy-to-control reaction conditions

Pending Publication Date: 2021-09-07
SHANDONG GUIKE NEW MATERIAL CO LTD
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Problems solved by technology

The reaction system is relatively complicated and the yield is low
[0007] A comprehensive analysis of research at home and abroad found that although the cage-type POSS is widely used, there are still some shortcomings in the preparation of the cage-type POSS, such as long reaction time, low yield, low purity, and the use of toxic organic solvents. Lord, there is an urgent need to optimize and improve the technology

Method used

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  • Method for preparing double-cage POSS (Polyhedral Oligomeric Silsesquioxane) by solvothermal method
  • Method for preparing double-cage POSS (Polyhedral Oligomeric Silsesquioxane) by solvothermal method

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Embodiment Construction

[0012] Technical scheme of the present invention is as follows:

[0013] A kind of method that solvothermal method prepares double cage type POSS, comprises steps as follows:

[0014] Dissolve the alkali in an alcoholic solvent first, then add trialkoxysilane containing substituents, carry out reflux reaction, pre-hydrolysis polycondensation occurs, and obtain a prepolymer; then transfer the prepolymer to the reaction kettle, and then add solvent A Solvothermal reaction was carried out to generate double cage POSS.

[0015] The synthesis technical route schematic diagram of the present invention is as follows:

[0016]

[0017] Wherein: R` is phenyl or methyl.

[0018] n is an integer (1-5).

[0019] According to the present invention, the aforementioned alcoholic solvent refers to an alcoholic compound capable of dissolving alkoxysilane, preferably methanol, ethanol, propanol, n-butanol, more preferably methanol and ethanol.

[0020] According to the present invention,...

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Abstract

The invention relates to a method for preparing double-cage POSS (Polyhedral Oligomeric Silsesquioxane) by a solvothermal method, which comprises the following steps: dissolving alkali in an alcohol solvent, then adding trialkoxysilane containing substituent groups, carrying out reflux reaction, and carrying out prehydrolytic polycondensation to obtain a prepolymer; and then transferring the prepolymer into a reaction kettle, adding a solvent A, and carrying out solvothermal reaction to generate the double-cage POSS. According to the synthesis method of the double-cage type POSS, the double-cage type POSS is obtained through a solvothermal method, reaction conditions are easy to control, and the obtained double-cage type POSS is clear in structure and high in purity and has a huge application prospect. The prepared double-cage POSS can be directly applied, and can also be used as a raw material for further modification.

Description

technical field [0001] The invention relates to a synthesis method for preparing double-cage POSS by a solvothermal method, and belongs to the field of organosilicon polymer synthesis. Background technique [0002] Since the molecular formula of polysilsesquioxane is RSiO 1.5 Between the inorganic ceramic material SiO 2 Between the silicone resin RSiO, this type of macromolecular compound is usually called a hybrid material. It combines the chemical and thermal stability of the inorganic Si-O-Si unit with the activity of the organic modifiable group R-Si, thus arousing widespread interest of researchers. Due to the high melting point, thermal stability and excellent mechanical and dielectric properties of POSS materials, as well as its low density (hollow structure) and molecular size at the nanoscale (excellent nano-effect), it is widely used in aerospace and other high-tech fields. It has great application value. The U.S. Air Force has invested heavily in the developme...

Claims

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Application Information

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IPC IPC(8): C08G77/06C08G77/04
CPCC08G77/06C08G77/045
Inventor 孔凡振渠源曹婷婷杨甜甜李朋涛齐士林
Owner SHANDONG GUIKE NEW MATERIAL CO LTD
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