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Modified montmorillonite/epoxy resin composite material and preparation method thereof

A technology of epoxy resin and composite materials, applied in epoxy resin coatings, chemical instruments and methods, anti-corrosion coatings, etc., can solve the problems of poor heat and humidity resistance, high brittleness of cured products, easy cracking, etc., and achieve less environmental pollution, Improved corrosion resistance and simple production process

Inactive Publication Date: 2014-04-09
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its cured product has the characteristics of high brittleness, low impact strength, easy cracking, and poor heat and humidity resistance.

Method used

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  • Modified montmorillonite/epoxy resin composite material and preparation method thereof
  • Modified montmorillonite/epoxy resin composite material and preparation method thereof
  • Modified montmorillonite/epoxy resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Three groups of modified montmorillonites prepared with different silane coupling agents were prepared, and the amounts of main materials are shown in Table 1.

[0027] Table 1

[0028]

[0029]

[0030] The preparation method comprises the following steps:

[0031] (1) Modification of montmorillonite:

[0032] Inorganic modification: Add montmorillonite to 200ml of distilled water, heat to 80°C, adjust the pH to about 2 with HCl, stir for 4 hours with magnetic force, filter and dry, grind to pass 200 mesh, and obtain inorganically modified montmorillonite;

[0033] Organic modification: make inorganic modified montmorillonite into a suspension of 6% to 20%, settle statically, and take the upper layer of suspension for use. Make cetyltrimethylammonium bromide (CTAB) into a 5%-30% aqueous solution, add it to the clay suspension of inorganic modified montmorillonite, heat to a temperature of 60°C ± 2°C, and stir vigorously. After reacting for 4-5h, the reaction...

Embodiment 2

[0037] KH570 was used as the silane coupling agent to prepare modified montmorillonite / epoxy resin composites with coupling agent dosages of 0.4%, 0.5%, and 0.6%. The dosage of main materials is shown in Table 2.

[0038] Table 2

[0039]

Embodiment 3

[0041] KH570 was used as the silane coupling agent to prepare modified montmorillonite / epoxy resin composites with coupling agent dosages of 0.4%, 0.8%, and 1.2%. The dosage of main materials is shown in Table 3. The preparation method is the same as in Example 1.

[0042] table 3

[0043]

[0044] The comprehensive properties of the materials obtained in Examples 1-3 are shown in Table 4.

[0045] Table 4

[0046]

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Abstract

The invention relates to a modified montmorillonite / epoxy resin composite material and a preparation method thereof. The composite material comprises the following components by weight: 4%-6% of montmorillonite; 0.4%-1.2% of a silane coupling agent; 20%-30% of polyamide; 30%-60% of epoxy resin; and 25%-40% of n-butyl alcohol. The silane coupling agent is a KH550 silane coupling agent, a KH560 silane coupling agent or a KH570 silane coupling agent. The preparation method includes: subjecting the montmorillonite to inorganic modification, hexadecyl trimethyl ammonium bromide organic modification, and silane coupling agent modification, and then preparing a modified montmorillonite / epoxy resin composite coating. The production process is simple and has less environmental pollution, and the modified composite coating has greatly improved corrosion resistance.

Description

Technical field: [0001] The invention belongs to the field of functional materials and relates to a composition of anti-corrosion materials, in particular to a high-performance anti-corrosion montmorillonite / epoxy resin composite material and a preparation method thereof. Background technique: [0002] Epoxy resin refers to a compound containing two or two epoxy groups in one molecule, which can form a three-dimensional crosslinked network cured product under appropriate conditions and the presence of a curing agent. It has excellent properties such as good insulation performance, strong stability and small shrinkage, so it has been widely used in the fields of coatings, electronics, civil engineering and bonding. However, its cured product has the characteristics of high brittleness, low impact strength, easy cracking, and poor heat and humidity resistance. In practical applications, it is often hoped that while improving the toughness of epoxy resin materials, the mechani...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D177/00C09D7/12C09D5/08C09C1/28C09C3/12C09C3/08C09C3/06
Inventor 林生岭
Owner JIANGSU UNIV OF SCI & TECH
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