Epoxy resin nanometer montmorillonite composite material and preparation method thereof

A technology of nano-montmorillonite and epoxy resin, which is applied in the direction of epoxy resin coating, powder coating, coating, etc., can solve the problem of poor performance of epoxy resin nano-montmorillonite composite materials and the inability to provide epoxy resin nano-montmorillonite Soil composite materials and other issues, to achieve good performance and economic advantages, excellent impact strength and heat resistance, and reduce production costs

Inactive Publication Date: 2011-11-02
ANHUI SHANFU NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the prior art, the flaky exfoliation of montmorillonite is realized during the solidification process. Since the system is in a static state during the solidification process, there is no driving force to promote the macroscopic and microcosmic mixing of the exfoliated montmorillonite flaky crystals. The exfoliated montmorillonite flake crystals are difficult to uniformly disperse in the cured epoxy resin (C-stage resin), resulting in poor performance of the prepared epoxy resin nano-montmorillonite composite; in addition, the prior art cannot provide Uncured Epoxy Nanomontmorillonite Composite for Epoxy Powder Coatings

Method used

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  • Epoxy resin nanometer montmorillonite composite material and preparation method thereof
  • Epoxy resin nanometer montmorillonite composite material and preparation method thereof
  • Epoxy resin nanometer montmorillonite composite material and preparation method thereof

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[0028] In order to overcome the defects in the prior art, the present invention proposes a preparation method of epoxy resin nano-montmorillonite composite material, which comprises the steps of montmorillonite acidification treatment, montmorillonite organic treatment and composite material synthesis. The purpose of acidification treatment is to make the K between montmorillonite layers + 、Na + , Ca 2+ , Mg 2+ The cations are transformed into soluble salts of acids and dissolved, thereby weakening the binding force between the original layers, cracking the interlayer lattice, expanding the interlayer distance, and significantly improving the surface area and adsorption capacity. The H in the acid + In addition to being able to replace the interlayer cations, it can also interact with the aluminum oxide octahedron, and some Al 3+ , Mg 2+ , Fe 2+ Plasma dissolution makes the montmorillonite negatively charged, and the particles become thinner due to the mutual repulsion of...

Embodiment 1

[0045] According to the process steps for preparing epoxy resin nano-montmorillonite composite materials proposed by the present invention, the montmorillonite is subjected to acidification treatment and octadecyltrimethylammonium chloride organic treatment, wherein the organic treatment process of montmorillonite The mass percent of octadecyltrimethylammonium chloride solution in the medium is 6%. According to the same components and component ratios, epoxy resin nano-montmorillonite composites were prepared by in-situ polymerization synthesis and blending synthesis.

[0046] Specifically, it is prepared according to the following composition and component distribution ratio. The molar ratio of bisphenol A: epichlorohydrin: sodium hydroxide is 1: 1.2407: 1.1987. The acidified and organically treated montmorillonite and bisphenol A The mass percentage is 5:95, and the epoxy resin nano-montmorillonite composite material is prepared in the reactor.

[0047] After testing, accor...

Embodiment 2

[0062] According to the processing step of preparing epoxy resin nano-montmorillonite composite material proposed by the present invention, when montmorillonite is carried out acidification treatment and octadecyltrimethylammonium chloride organic treatment, in the organic treatment of montmorillonite In the process, octadecyltrimethylammonium chloride solution with a mass percentage of 12% is used, and a co-mixing method is adopted, and epoxy resin nano-montmorillonite composite materials are prepared according to different component distribution ratios.

[0063] (1) Prepare according to the following composition and component distribution ratio: bisphenol A: epichlorohydrin: the mol ratio of sodium hydroxide is 1: 1.2267: 1.1889, the montmorillonite and bisphenol A through acidification and organic treatment The mass percentage is 3:97, and the epoxy resin nano-montmorillonite composite material is prepared in a reactor by blending. After testing, the softening point of the ...

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Abstract

The invention discloses an epoxy resin nanometer montmorillonite composite material and a preparation method thereof. The method comprises the steps of acidizing of montmorillonite, organizing of montmorillonite and synthesizing of the composite material. The components and corresponding content of each component of the epoxy resin nanometer montmorillonite composite material are as follows: the mass ratio of epoxy resin to montmorillonite is in a range of 97:3 to 95:5, the mol ratio of bisphenol A to chloropropylene oxide is in a range of 1:1.2 to 1:1.3, and the mol ratio of bisphenol A to sodium hydroxide is in a range of 1:1.1 to 1:1.3. The epoxy resin nanometer montmorillonite composite material prepared in the invention has excellent overall properties; toughness, impact strength and hear resistance the material are superior to those of universal type epoxy resins; production cost of the material is low; the material meets application requirements for epoxy powdery paints; and the invention has good performance and economic advantages.

Description

technical field [0001] The invention relates to the technical field of epoxy resin / inorganic composite materials, in particular to an epoxy resin nano-montmorillonite composite material and a preparation method thereof. Background technique [0002] Epoxy resin is widely used in adhesives, coatings, composite materials and other fields because of its excellent mechanical properties, electrical properties and bonding properties. However, due to the high brittleness of the cured product, low impact strength, and easy cracking, general-purpose epoxy resins cannot meet the ever-growing engineering technical requirements, which limits the expansion of its application fields. Therefore, the development of epoxy resin materials with good comprehensive properties is a key step in the application of epoxy resins. [0003] In the prior art, the preparation of epoxy resins and inorganic materials into epoxy resin / inorganic composite materials has become an important way to develop hig...

Claims

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Application Information

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IPC IPC(8): C08G59/06C08K9/04C08K9/02C08K3/34C08L63/02C09D163/02C09D5/03
Inventor 孙建中包秀群周其云叶琳
Owner ANHUI SHANFU NEW MATERIAL TECH
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