Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane and preparation method thereof

A technology of dodecafluoroheptylpropyl cage and fluoroheptylpropyl cage, which is applied in the field of preparation of dodecafluoroheptylpropyl cage silsesquioxane to reduce synthesis cost and improve hydrophobic and oleophobic properties , the effect of a wide range of sources

Inactive Publication Date: 2010-11-03
HOHAI UNIV
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AI Technical Summary

Problems solved by technology

If it is prepared as the corresponding cage-type silsesquioxane, it will endow it with better hydrophobic and oleophobic interfacial properties because of the special three-dim

Method used

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  • Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane and preparation method thereof
  • Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane and preparation method thereof
  • Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0030] Example 1

[0031] Add 47.8g of dodecafluoroheptylpropyltrimethoxysilane (trade name: Actyflon-G502, molecular formula: (CF3)2CFCFHCF(CF3)CH2CH2CH2CH2Si(OCH3)3) 0.1 mol dropwise to 1000ml methanol at room temperature, and the catalyst is concentrated. 100ml of hydrochloric acid (concentration 37.5%), 10ml of water, stirred at room temperature for 1 day after dripping, and then stood for 30 days, a large amount of white crystal-like precipitates were formed in the solution.

[0032] 2) Filter the reaction mixture to obtain white crystals, wash with methanol, and dry to obtain part of the product. Take the filtrate and concentrate, filter, wash, and dry to obtain the remaining part of the product. The two are combined to obtain 11.6 g of product, with a yield of about 28%.

[0033] The product of the present invention dodecafluoroheptyl propyl cage silsesquioxane (dodecafluoroheptyl propyl POSS), its chemical formula is: ((CF 3 ) 2 CFCFHCF(CF 3 )CH 2 CH 2 CH 2 CH 2 ) 8 Si 8 O ...

Example

[0037] Examples 2~6

[0038] The preparation method of dodecafluoroheptyl propyl cage silsesquioxane, the specific steps are the same as in Example 1, the preparation process parameters, the raw materials used and the specific dosage are Table 1:

[0039] Table 1 Preparation process parameters, raw materials used and specific dosages in Examples 2 to 6

[0040]

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Abstract

The invention provides a preparation method of dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane, which comprises the following steps: dripping each 1mol of dodecafluoroheptyl-propyl-trimethoxylsilane into 250-10000ml of organic solvent under the condition of 0-40 DEG C, carrying out hydrolysis condensation reaction under the action of acid catalysis, carrying out the reaction for a certain period of time, and carrying out concentration, filtration, drying and other steps for preparing dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane (dodecafluoroheptyl-propyl POSS) crystals. The invention further provides the dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane. The method has simple and easy process, low cost, high yield and high product purity, and the prepared dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane product has excellent hydro-oleophobic performances, heat resistance, flame retardance and low dielectric constant performance, and can be widely applied in the fields of polymer modification, hydro-oleophobic interface materials, flame retardants, low dielectric constant materials, building coatings, space materials, medical materials, light-emitting materials, liquid crystal materials and the like.

Description

technical field [0001] The present invention relates to a dodecafluoroheptylpropyl cage silsesquioxane (dodecafluoroheptylpropyl POSS), and the present invention also relates to this dodecafluoroheptylpropyl cage silsesquioxane method of preparation. Background technique [0002] The molecular formula of Polydehral Oligomer Silsesquioxane (POSS) is (RSiO 1.5 ) 8 , the cage-shaped skeleton is composed of SiO bonds, with a size of about 1.5nm. POSS molecules are highly consistent on the nanometer scale and can be uniformly dispersed in the matrix at the molecular level, which can further optimize the interaction between material components and effectively knead and polymerize. The advantages of good material processing technology, low cost, high strength and stable performance of inorganic materials endow materials with better performance and solve the problems that traditional inorganic nanoparticle modified polymers cannot solve. The POSS cage skeleton composed of silicon...

Claims

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Application Information

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IPC IPC(8): C07F7/21
Inventor 何辉蒋亚清张继尹史燕南陆佳路维
Owner HOHAI UNIV
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