Epoxy elastic putty for surface of concrete

A concrete surface, elastic putty technology, applied in the direction of filling slurry, etc., can solve the problems of cracks in the putty layer, poor adhesion between layers, insufficient flexibility, etc., to reduce the curing crosslinking density, easy to scrape, Excellent adhesion effect

Inactive Publication Date: 2015-04-08
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary epoxy putty has high strength and insufficient flexibility. When the concrete is deformed due to thermal expansion and contraction, the putty layer is prone to cracks; the elastic putty based on styrene-acrylic emulsion or pure acrylic emulsion is

Method used

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  • Epoxy elastic putty for surface of concrete
  • Epoxy elastic putty for surface of concrete
  • Epoxy elastic putty for surface of concrete

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1 Preparation of epoxy elastic putty

[0019] (1) A component

[0020] ①The formula of component A is shown in Table 1.

[0021] Table 1

[0022]

[0023] In the table: NPEL-128 is a product of Nanya Epoxy Co., Ltd.; YDF-172 is a product of Guodu Chemical (Kunshan) Co., Ltd.; TLA-100 is a product of Tianlun Chemical Co., Ltd.

[0024] ②Preparation of component A

[0025] In the container, first add liquid epoxy resin and flexible epoxy resin, then add the mixed diluent, start stirring, control the speed at 300~500r / min, stir for 10~15min, and then add anatase titanium dioxide and heavy Calcium carbonate and talc, the speed is controlled at 800~1200r / min, after adding anatase titanium dioxide, heavy calcium carbonate, and talc, all need to be stirred for 10-15min. After all of them are added, stir again for 20-30min. .

[0026] (2) B component

[0027] ①The formula of component B is shown in Table 2.

[0028] Table 2

[0029] Component

[0030] In the table, Aradur125 and ...

Example Embodiment

[0038] Example 2 Preparation of epoxy elastic putty

[0039] (1) A component

[0040] ①The formula of component A is shown in Table 4.

[0041] Table 4

[0042]

[0043] In the table: NPEL-128, YDF-172, TLA-100 are the same as Table 1.

[0044] ②Preparation of component A

[0045] The preparation method is the same as the component of Preparation Example 1A.

[0046] (2) B component

[0047] ①The formula of component B is shown in Table 5.

[0048] table 5

[0049] Component

[0050] In the table, Aradur125 and Aradur3225 are products of Huntsman (Guangzhou); A-200 is a product of Evonik Degussa.

[0051] ②Preparation of component B

[0052] The preparation method is the same as the component of Preparation Example 1B.

[0053] (3) Preparation of epoxy elastic putty

[0054] The A component and the B component prepared above are mixed uniformly at a mass ratio of 10:3.5 to obtain an epoxy elastic putty.

[0055] (4) Testing the main properties of the epoxy elastic putty prepared in this exampl...

Example

[0064] ①Epoxy elastic putty (made in Examples 1 and 2);

[0065] ②Epoxy putty is NC-16 product of CNOOC Changzhou Coating Chemical Research Institute;

[0066] ③The elastic putty with pure acrylic emulsion as the base resin is CTD-7305, a product of CNOOC Changzhou Paint Chemical Research Institute.

[0067] (3) The test results are shown in Table 7.

[0068] Table 7

[0069]

[0070] It can be seen from the test results in Table 7 that the epoxy elastic putty of the present invention (made in Examples 1 and 2) has better freeze-cracking performance and pull-opening adhesion than that of the elastic putty with pure acrylic emulsion as the base resin; The adhesion is equivalent to epoxy putty, but the freezing cracking performance is significantly better than epoxy putty. It is proved that the flexible epoxy resin (bisphenol A epoxy resin modified by dimer acid glycidyl ester) introduced in the A component of the present invention has a long alkane chain which reduces the rigidity (ten...

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PUM

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Abstract

The invention relates to epoxy elastic putty for the surface of concrete. The epoxy elastic putty is composed of a componend a component B; the component A is prepared from the following ingredients in percentage by weight: 5-20% of liquid epoxy resin, 5-20% of flexible epoxy resin, 3-10% of anatase titanium dioxide, 10-30% of talcum powder, 30-60% of heavy calcium carbonate, and 5-15% of a mixed thinner; the component B is prepared from the following ingredients in percentage by weight: 10-20% of polyamide resin, 10-25% of polyether modified amine, 40-60% of heavy calcium carbonate, 15-35% of talcum powder, 5-15% of a mixed thinner and 0.5-2% of an anti-sagging agent, and the mass ratio of the component A and the component B is 10 to (3-4). According to the epoxy elastic putty, the advantages of epoxy putty and pure acrylic emulsion elastic putty are combined, the epoxy elastic putty has excellent adhesive force with a concrete base material, has good reelability and toughness, and has the good anti-crack property in a high-low temperature environment.

Description

technical field [0001] The invention relates to a putty, in particular to an epoxy elastic putty for concrete surfaces. Background technique [0002] Concrete is an inorganic material composed of cement, gravel, water and admixtures. It is hard and wear-resistant, so it is widely used in construction and civil engineering. It is currently the most widely used structural material in the world. Waterproofing, anticorrosion and thermal insulation of concrete surfaces have become more and more important and common means of building protection and energy saving. [0003] Putty, as the main supporting material of paint, its main function is to fill the large pits and small gaps in the base of the concrete surface, so that the paint can be applied on the basically flat base surface, so as to obtain a good coating effect. Since the concrete wall is a cement-based material, the cement-based material has inherent moisture and moisture permeability. When the ambient temperature drops ...

Claims

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Application Information

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IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 张睿朱亚君刘志远倪维良赵宝华
Owner CHINA NAT OFFSHORE OIL CORP
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