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Epoxy resin composition

A technology of epoxy resin and composition, which is applied in the direction of epoxy resin coating, coating, anti-corrosion coating, etc., can solve the problems such as inability to construct, and achieve the effect of excellent natural environment

Active Publication Date: 2015-03-25
CHUGOKU MARINE PAINTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the epoxy resin composition described in the above-mentioned publication is a putty-like (Japanese: パテ-like) composition, so it cannot be applied by a simple method of roller coating or brush coating during construction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0116]

[0117] The epoxy resin composition of the present invention can be prepared by mixing the above components.

[0118] The epoxy resin composition of the present invention is suitably used as a two-liquid mixing type epoxy resin composition. A preferred embodiment is a form in which a main ingredient containing components (a) and (b) and a curing agent containing components (c) and (d) are mixed before use. In the case of using the epoxy resin composition of the present invention as a two-component mixed epoxy resin composition, it can be heat-cured by appropriately selecting a curing agent, or it can be left at ambient temperature without heating. curing method.

[0119] Furthermore, the liquid epoxy resin composition of the present invention may be used as a one-component epoxy resin composition by further blending a thermally active curing agent with components (a) and (b). In this case, it is mainly used in the method of heat curing.

[0120] When the epoxy res...

Embodiment 1～5、7

[0130] [Examples 1-5, 7, Comparative Examples 1-4]

[0131] (preparation of main ingredient)

[0132] The main ingredients used in Examples and Comparative Examples were prepared by mixing the raw materials shown in "Main ingredient" in Table 1 at the blending ratio (mass ratio) shown in Table 1, and stirring with a high-speed disperser.

[0133] (preparation of curing agent)

[0134] The respective raw materials shown in "curing agent" in Table 1 were mixed according to the blending ratio (mass ratio) shown in Table 1, and stirred with a high-speed disperser to prepare curing agents used in Examples and Comparative Examples.

[0135] (Preparation of epoxy resin composition)

[0136] Just before being tested in the test, the main agent prepared by the above method and the curing agent were mixed according to the mixing ratio (mass ratio) expressed in the subtotal amount in Table 1 using a disperser to prepare the epoxy resin composition. This epoxy resin composition was use...

Embodiment 6

[0139] In the same manner as above, each raw material shown in Table 1 was mixed at the blending ratio (mass ratio) shown in Table 1, and stirred with a high-speed disperser to prepare a main ingredient and a curing agent. Use a disperser to mix the main agent and curing agent according to the mixing ratio (mass ratio) expressed in the subtotal amount in Table 1, and then use an electric mixer to mix the fibers (h) shown in Table 1 in the subtotal amount Shown mixing ratio (mass ratio) was mixed to prepare an epoxy resin composition. This epoxy resin composition was used for the following test.

[0140] The test results are shown in Table 2.

[0141] Table 3 summarizes the raw materials used in Examples and Comparative Examples.

[0142]

[0143] After the concrete paving slab (base material) of 300 mm x 300 mm x 60 mm specified in JIS A5371 was completely immersed in water at 23° C. for 24 hours, it was taken out of the water. Thereafter, the above-mentioned epoxy resin ...

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Abstract

The invention relates to an epoxy resin composition which has epoxy resin (a) more than two functions derived from higher fatty acids or a derivative thereof, epoxy resin (b) other than the epoxy resin (a), end-reactive butadiene-acrylonitrile copolymer (c), and polyamide amine (d). According to the present invention, the epoxy resin composition can follow cracks and achieve protection of the concrete structure by a simple method using roller coating and brush coating paint in a wet surface. Further, the epoxy resin composition of the present invention has long-term corrosion resistance to seawater, and adhesion to concrete wet surfaces, rebars, steel, and rust surfaces.

Description

technical field [0001] The present invention relates to an epoxy resin composition excellent in flexibility. Background technique [0002] Conventionally, concrete has been widely used in a large number of structures, facilities, and the like. [0003] However, in recent years, there has been a problem of cracks in concrete structures due to shrinkage associated with drying of concrete, expansion and contraction associated with changes in ambient temperature, expansion due to rusting of steel bars in concrete, alkali-aggregate reaction, and the like. For example, in concrete structures built on seashores, rivers, lakes, etc., or in facilities that use a large amount of seawater, freshwater, etc., once a crack occurs in the concrete structure, seawater or freshwater will infiltrate the interior through the crack, and the buried Internal steel materials corrode, and as a result, problems such as peeling off and disintegration of a part of the concrete structure sometimes occu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
CPCC08L2205/035C09D5/08C09D7/40C09D163/00C08L63/00C08L47/00C08L77/00C08K3/00C08L9/02C08L79/02C09D109/02C09D179/02
Inventor 高桥定明平泽勇人
Owner CHUGOKU MARINE PAINTS
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