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Polymer-matrix composite material and preparation method thereof

A composite material and polymer technology, applied in the field of polymer-based composite materials and their preparation, can solve the problems of increased density, poor toughness, and poor sound damping effect of composite materials, and can overcome the greatly increased density and improved strength. Effect

Active Publication Date: 2015-06-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a polymer-based composite material and a preparation method thereof, the purpose of which is to solve the poor strength and toughness of existing collective polymer materials by adding surface-modified silica hollow spherical fillers into the matrix polymer , The sound damping effect is not good, and the technical problems of its composite material density increase

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  • Polymer-matrix composite material and preparation method thereof
  • Polymer-matrix composite material and preparation method thereof
  • Polymer-matrix composite material and preparation method thereof

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preparation example Construction

[0039] The preparation method of described composite material, comprises the following steps:

[0040] (1) Preparation of hollow silica nanospheres by sol-gel method:

[0041](1-1) Preparation of polystyrene emulsion: add styrene to deionized water, add an emulsifier such as polyvinylpyrrolidone, stir to make it evenly mixed, and obtain a mixed system, the mass of styrene per gram of deionized water is 0.06 grams ~0.16 g; under the condition of no oxygen, keep the temperature of the system at 50°C ~ 80°C, then add the aqueous solution of potassium persulfate, each gram of deionized water corresponds to 0.5 mg ~ 2 mg of potassium persulfate; react for 8 hours After 12 hours, add 0.01mL~0.05mL of methacryloyloxyethyltrimethylammonium chloride dropwise, continue the reaction until complete, and obtain a functionalized polystyrene emulsion; preferably polyvinylpyrrolidone is used as an emulsifier At the same time, the mass of polyvinylpyrrolidone contained in each gram of deioniz...

Embodiment 1

[0055] An epoxy resin-silica hollow sphere composite material, comprising silica hollow nanospheres and E-51 bisphenol A type epoxy resin matrix, the silica hollow nanospheres are dispersed in epoxy resin, Its addition amount is 2wt.% of epoxy resin. The silica hollow nanospheres are hollow silica nanospheres surface-modified by KH-550 silane coupling agent, the length of the outer diameter is about 210nm, the length of the inner diameter is about 90nm, and the specific surface area is about 61m 2 / g.

[0056] The preparation method of the epoxy resin-silicon dioxide hollow sphere composite material comprises the following steps:

[0057] (1) Preparation and modification of silica hollow nanospheres:

[0058] (1-1) Preparation of polystyrene emulsion: adding styrene to deionized water, adding an emulsifier and stirring to make it evenly mixed to obtain a mixed system, the quality of styrene per gram of deionized water is 0.05 grams; Under these conditions, keep the tempera...

Embodiment 2

[0068] An epoxy resin-silica hollow sphere composite material, comprising silica hollow nanospheres and E-54 bisphenol A epoxy resin, the silica hollow nanospheres are dispersed in the epoxy resin, and The added amount is 3wt.% of the epoxy resin. The silica hollow nanospheres are hollow silica nanospheres surface-modified by KH-550 silane coupling agent, the length of the outer diameter is about 210nm, the length of the inner diameter is about 90nm, and the specific surface area is about 61m 2 / g.

[0069] The preparation method of the epoxy resin-silicon dioxide hollow sphere composite material comprises the following steps:

[0070] (1) Preparation and modification of silica hollow nanospheres:

[0071] (1-1) Preparation of polystyrene emulsion: add styrene to deionized water, add polyvinylpyrrolidone and stir to make it evenly mixed to obtain a mixed system, the mass of styrene per gram of deionized water is 0.1 gram; Under certain conditions, keep the temperature of t...

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Abstract

The invention discloses a polymer-matrix composite material and a preparation method thereof. The composite material comprises silicon dioxide hollow nanospheres and a polymer-matrix material, wherein the silicon dioxide hollow nanospheres are dispersed into the polymer-matrix material; the adding amount of the silicon dioxide hollow nanospheres is 0.1wt.% to 10wt.%; the preparation method of the composite material comprises the following steps: (1) preparing the silicon dioxide hollow nanospheres by a sol-gel method; (2) dispersing the silicon dioxide hollow nanospheres prepared from the step (1) into the polymer-matrix material, and forming a polymer-matrix material-silicon dioxide hollow nanosphere uniform dispersion system; (3) adding a curing agent, and solidifying the polymer-matrix material obtained from the step (2). The polymer-matrix material-silicon dioxide hollow nanosphere composite material disclosed by the invention has excellent mechanical property and acoustic damping property, and is simple in preparation method and mild in reaction condition.

Description

technical field [0001] The invention belongs to the field of composite materials, and more specifically relates to a polymer-based composite material and a preparation method thereof. Background technique [0002] The many excellent properties of the polymer matrix composite itself make its application scope continuously expand, but the shortcomings of the polymer matrix itself, such as heat resistance, wear resistance, high mechanical strength, etc., also limit its further development, especially Represents the strength and toughness of the mechanical performance index. [0003] Generally, the modification of inorganic particle fillers can effectively improve the strength of the polymer matrix, but often reduces its toughness. Commonly used toughening methods, such as elastomer toughening, cause a relatively large decrease in the strength of polymer materials. At the same time, strengthening and toughening has become the difficulty and research focus of polymer material m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L83/04C08L75/04C08K9/10C08K9/06C08K9/04C08K7/26C08K3/36
Inventor 周兴平施雪军解孝林张平
Owner HUAZHONG UNIV OF SCI & TECH
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