Nano hybrid P(VDF-TrFE)(polyvinylidene fluoride copolymer) composite film as well as preparation method and application thereof

A technology of polyvinylidene fluoride and copolymer, which is applied in the field of nano-hybrid polyvinylidene fluoride copolymer composite film and its preparation and application, can solve the problems that polyvinylidene fluoride is easily corroded by atomic oxygen, etc., and achieve performance improvement, Good compatibility and high modulus effect

Inactive Publication Date: 2018-11-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention solves the technical problem that the existing polyvinylidene fluoride is easily corroded by atomi

Method used

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  • Nano hybrid P(VDF-TrFE)(polyvinylidene fluoride copolymer) composite film as well as preparation method and application thereof

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Experimental program
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Example Embodiment

[0026] Specific embodiment 1: This embodiment is a nano-hybrid polyvinylidene fluoride copolymer composite membrane, which contains 92 to 98% of polyvinylidene fluoride copolymer P (VDF-TrFE) in terms of mass percentage, and is multi-faceted oligomeric fold half Silicone 2-8%.

Example Embodiment

[0027] Specific embodiment two: this embodiment is different from specific embodiment one in that the nano-hybrid polyvinylidene fluoride copolymer composite membrane contains polyvinylidene fluoride copolymer P (VDF-TrFE) 95-97 in terms of mass percentage %, 3-5% polyhedral oligomeric silsesquioxane. Others are the same as the first embodiment.

Example Embodiment

[0028] Specific embodiment three: This embodiment is different from specific embodiment one or two in that: the polyhedral oligomeric silsesquioxane is a polyhedral oligomeric silsesquioxane whose functional group is a fluorinated propyl group. Others are the same as the first or second embodiment.

[0029] Polyhedral oligomeric silsesquioxane POSS is a kind of simple structure (RSiO 1.5 ) n The cage structure, the structural formula is:

[0030] Where R is -CF 3 , N=8, 10, 12..., the molecule takes the inorganic structure Si-O-Si as the core, and the organic functional group is connected to the Si atom, which can chemically react with the resin monomer and become a part of the polymer backbone. POSS is The molecular size of a real chemical nanostructure is about 1.5nm.

[0031] There are many kinds of POSS with the different R groups connecting cage silicon oxygen. The R group used in the present invention is fluoropropyl, and the R group is similar to the organic matrix P (VDF-Tr...

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Abstract

The invention discloses a nano hybrid P(VDF-TrFE)(polyvinylidene fluoride copolymer) composite film as well as a preparation method and an application thereof and belongs to the technical field of high-compatibility, AO (atomic oxygen) scouring resistant, high-hydrophobicity and piezoelectric high-polymer hybrid composites to solve the technical problem that existing polyvinylidene fluoride is easily corroded by AO. The nano hybrid P(VDF-TrFE) composite film contains, in percentage by mass, 92%-98% of P(VDF-TrFE) and 2%-8% of polyhedral oligomeric silsesquioxane. The method comprises steps asfollows: 1) P(VDF-TrFE) and polyhedral oligomeric silsesquioxane are dissolved in an organic solvent; 2) a pre-prepared solution is prepared; 3) the pre-prepared solution is drained and poured into aculture dish, left to stand and dried. The method is simple and easy to implement, the piezoelectric property of a substrate is kept, the modulus and the hardness of an original substrate material canbe notably improved, the hydrophobic property and the AO corrosion resistance are enhanced, the properites of the composite are relatively comprehensively improved, and requirements of part of special fields can be better met.

Description

technical field [0001] The invention belongs to the technical field of high compatibility, anti-atomic oxygen scouring, high hydrophobicity and piezoelectric polymer hybrid composite materials, and specifically relates to a reinforced piezoelectric polymer polyvinylidene fluoride containing organic-inorganic nanometer functional monomer POSS Copolymer technology. Background technique [0002] The aerospace industry is a strategic industry that marks a country's national defense strength, cutting-edge technology level and comprehensive national strength. In recent years, my country's aerospace industry has developed rapidly. In order to promote the development of my country's aerospace industry in a faster and stronger direction, it is an important task for aerospace personnel to use more advanced technology to reduce the weight of spacecraft and improve the performance of spacecraft. At the same time, the introduction of intelligent structural systems into various artifici...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L83/04C08J5/18
CPCC08J5/18C08J2327/16C08J2483/04
Inventor 刘一志孙毅曾凡林
Owner HARBIN INST OF TECH
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