Epoxy nanocomposite with controllable phase structure and based on polyhedral oligomeric silsesquioxanes (POSS)

A composite material, epoxy nanotechnology, applied in epoxy nanocomposite materials and their preparation, in the field of epoxy nanocomposite materials based on POSS, can solve the problems that are not involved, achieve improved compatibility, strong operability, Easy to achieve the effect of industrialization

Active Publication Date: 2013-06-12
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of POSS monomers or polymers and epoxy resins to construct organic-inorganic nanocomposites has made great progress, but none of the above research reports involves a POSS-based block copolymer compatibilized POSS monomer Epoxy nanocomposites with direct physical blending system of epoxy

Method used

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  • Epoxy nanocomposite with controllable phase structure and based on polyhedral oligomeric silsesquioxanes (POSS)
  • Epoxy nanocomposite with controllable phase structure and based on polyhedral oligomeric silsesquioxanes (POSS)
  • Epoxy nanocomposite with controllable phase structure and based on polyhedral oligomeric silsesquioxanes (POSS)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare POSS monomer (MAiBuPOSS): chain transfer agent (CDB): initiator (AIBN) = 20:1:0.2 tetrahydrofuran solution system, the monomer concentration is 0.7mol / L, put the solution in the reactor and freeze it with liquid nitrogen After melting and degassing for three to five times, fill it with argon to protect the reaction for 48 hours. After the reaction, freeze it with liquid nitrogen to stop the reaction, add a small amount of tetrahydrofuran to dilute, drop it into methanol for precipitation, dry the precipitate and take a sample for NMR test. Repeat this step for repeated precipitation Until there is no POSS monomer, dry to obtain pink PMAiBuPOSS. The molar ratio of methyl methacrylate monomer (MMA): PMAiBuPOSS: initiator (AIBN) = 16000: 20: 1 prepares a tetrahydrofuran solution system with a monomer concentration of 4 mol / L, and puts the solution in the reactor with liquid After three to five times of nitrogen freeze-thaw degassing, fill with argon to protect the ...

Embodiment 2

[0038] Prepare POSS monomer (MAiBuPOSS): chain transfer agent (CDB): initiator (AIBN) = 20:1:0.2 tetrahydrofuran solution system, the monomer concentration is 0.7mol / L, put the solution in the reactor and freeze it with liquid nitrogen After melting and degassing for three to five times, fill it with argon to protect the reaction for 48 hours. After the reaction, freeze it with liquid nitrogen to stop the reaction, add a small amount of tetrahydrofuran to dilute, drop it into methanol for precipitation, dry the precipitate and take a sample for NMR test. Repeat this step for repeated precipitation Until there is no POSS monomer, dry to obtain pink PMAiBuPOSS. The molar ratio of methyl methacrylate monomer (MMA): PMAiBuPOSS: initiator (AIBN) = 16000: 20: 1 prepares a tetrahydrofuran solution system with a monomer concentration of 4 mol / L, and puts the solution in the reactor with liquid Nitrogen freeze-thaw degassing three to five times, then filled with argon to protect the re...

Embodiment 3

[0040] Prepare POSS monomer (MAiBuPOSS): chain transfer agent (CDB): initiator (AIBN) = 30:1:0.2 tetrahydrofuran solution system, the monomer concentration is 0.7mol / L, put the solution in the reactor and freeze it with liquid nitrogen After melting and degassing for three to five times, fill it with argon to protect the reaction for 48 hours. After the reaction, freeze it with liquid nitrogen to stop the reaction, add a small amount of tetrahydrofuran to dilute, drop it into methanol for precipitation, dry the precipitate and take a sample for NMR test. Repeat this step for repeated precipitation Until there is no POSS monomer, dry to obtain pink PMAiBuPOSS. The molar ratio of methyl methacrylate monomer (MMA): PMAiBuPOSS: initiator (AIBN) = 16000: 20: 1 prepares a tetrahydrofuran solution system with a monomer concentration of 4 mol / L, and puts the solution in the reactor with liquid After three to five times of nitrogen freeze-thaw degassing, fill with argon to protect the ...

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Abstract

The invention discloses an epoxy nanocomposite based on polyhedral oligomeric silsesquioxanes (POSS) and a preparation method of the epoxy nanocomposite based on the POSS and relates to the epoxy nanocomposite with a controllable phase structure capable of improving effect and based on the POSS. The preparation method includes the following steps of allocating a POSS monomer, a chain transfer agent and an initiating agent in a solution according to the measuring amount through a reversible addition-fragmentation chain transfer (RAFT) method, conducting freeze thaw and degassing through liquid nitrogen, charging argon shield to enable the mixture to react, and obtaining PMAiBuPOSS; further allocating PMAiBuPOSS, Methl Methacrylate monomer (MMA) and an initiating agent in a solution, and obtaining POSS base block copolymer , namely, PMAiBuPOSS-b-PMMA, through the RAFT; conducting melt blending on the POSS monomer, epoxy resin, the prepared POSS base block copolymer to obtain blend precursor of the POSS and the epoxy, adding in a curing agent, fully stirring, dissolving the mixture the curing agent, pouring the blend into a die, conducting temperature programming and curing, and obtaining the nanocomposite with the controllable phase structure and based on the POSS.

Description

technical field [0001] The invention relates to a POSS-based epoxy nano-composite material and a preparation method thereof, in particular to a POSS-based epoxy nano-composite material with a controllable phase structure with a strengthening effect, belonging to the field of organic polymer materials. Background technique [0002] With the rapid development and progress of society, functional new materials with various excellent properties have become an important direction of scientific and technological development. Driven by this demand, more and more researchers have expressed great research interest in organic-inorganic nanocomposites. Organic-inorganic nanocomposites are favored by researchers because they combine the advantages of polymers (such as low density, ease of processing, toughness) with the advantages of inorganic materials (such as high modulus, high hardness, non-flammability) . [0003] In recent years, the emergence of inorganic nanoparticle clusters w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08L53/00C08G59/50C08K5/549C08F293/00
Inventor 戴李宗陈珉张龙谢剑杰康启龙李聪许一婷曾碧榕罗伟昂何凯斌刘新瑜
Owner XIAMEN UNIV
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