Composition for anti-corrosive coatings

 

Epoxy composition intended for the manufacture of mechanically durable floor coverings, metal and concrete building structures, tanks, gluing ceramic, glass, sitallovye and stone tiles. The composition contains epoxy Dianova resin, polyethylenepolyamine and isoborneol oil. A certain ratio of the components in the composition provides the durability of the coating in compression to 76 MPa. table 4.

The invention relates to the field of production of epoxy compositions intended for the manufacture of anti-corrosion coatings, and can be used for the manufacture of mechanically durable floor coverings, metal and concrete building structures, tanks, gluing ceramic, glass, stalowych and stone tiles.

Known epoxy compositions which contain various modifying additives /1,3/.

The invention /1/ (C. A. Voitovich, etc. of gisi them. VP Chkalov, B 42, 1974, SU 449897 And CL 04 In 25/02) refers to the composition of polymer mixtures, which are used to protect structures from corrosion. As modifying additives (modifier) is used thereorganization, butylmethacrylate - the 2.0-12,5 Aliphatic diamine (hardener) is 2.0 - 7.5 Filler - 25,0-65,0 Invention /2/ (C. D. Mironov, etc. of gisi them. VP Chkalov. B 24, 1984, EN 1100294, A, 09 G 3/16) refers to adhesives containing epoxy Dianova resin designed for bonding and corrosion protection. As the modifier is the product of the acceleration at a temperature of 200-310oC settling tree resins in the following ratio, wt.h.: Epoxy Dianova resin - 100 Product direct pickup settling tree resins - 3-6 Cubic residue rectification diamine (hardener) - 20-30
Stripped of coking distillate oil shale (thinner) - 70-90
Coatings based on these compositions have insufficient strength and elasticity.

Close to the proposed composition of the technical essence and the achieved result is the composition to produce a protective mask PCB /3/ (C. A. Khachatryan and others, B 38, 1991, SU 1684300 A1 09 D 163/02) of the following composition, wt.h.:
Epoxy Dianova resin - 79
Grease tsiatim 221 on the basis of oligochitosan - 10-15
The polyethylenepolyamine - 15-20
Coatings based on this composition are characterized by good strength at impact, the adhesion strength at Izgi them. VP Chkalov. Bull. 25, RU 2155783 C2 09 D 5/08, 163/02) and the closest anticorrosive composition to another composition, wt.h.:
Epoxy Dianova resin - 100
Camphor oil - 30-70
The polyethylenepolyamine - 10-15
Coatings based on this composition are characterized by good strength Flexural, impact, adhesion, but the rate of compressive strength is also not high enough.

The aim of the invention is to increase a very important factor epoxidic compositions - the compressive strength and the involvement of new raw materials, especially waste.

This objective is achieved in that the composition for anti-corrosive coatings, including epoxy Dianova resin modifier and a polyethylenepolyamine, contains as a modifier isoborneol oil in the following ratio, wt.h.:
Epoxy Dianova resin - 100
Isoborneol oil - 30-70
The polyethylenepolyamine - 10-15
As the epoxy resin used resin ED-6, ED-20, e-40 (GOST 10587-84).

Isoborneol oil (IM) is a mixture of isomers of isoborneol and isoborneol in the ratio of 50:50. Consists of a filtrate obtained by centrifugation of isoborneol. In the Fig 433-623 K.

The composition of th the EPA) and again stirred.

The coating technology: composition applied on the protected surface by brush or spray.

The curing conditions: room temperature, relative humidity 30 to 80%.

Viability compositions 90-150 minutes

Corrosion resistance was determined according to GOST 12020-72. The plastic. Methods for the determination of resistance to chemical environments.

Acid 100%, alkali 99.7 per cent.

Below are examples of specific performance.

Example 1. Under normal conditions was mixed with 100 wt.h. epoxy resin with 30 wt. including isoborneol oil, then added a 12 wt.h. hardener polyethylenimine and again stirred. The compressive strength of 70 MPa.

Example 2. Mixed 100 wt.h, epoxy resin with 70 wt.h, then was added 15 wt. including hardener PEPA and again stirred. Compressive strength of 75 MPa.

Other examples are given in table.1.

Specific examples of compositions according to the invention and known compositions are given in table.2.

As can be seen from the table.2, the optimal number isoborneol oil is 30-70 wt.h.

From table.2-4, it follows that with the use of the composition according to the invention, isoborneol oil is achieved znachitelnie and bending.

Currently, developed prototypes, laboratory tests.

Sources of information
1. SU 449897 A1, bull. 42, 1974.

2. SU 1100294 A, bull. 24, 1984.

3. SU 1684300 A1, bull. 38, 1991.

4. EN 2165783 C2, bull. 25, 2000.


Claims

Composition for anti-corrosive coatings, including epoxy Dianova resin modifier and a polyethylenepolyamine, characterized in that it contains as a modifier isoborneol oil in the following ratio, wt. including :
Epoxy Dianova resin - 100
The polyethylenepolyamine - 10-15
Isoborneol oil - 30-70

 

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Epoxy composition // 2186077
The invention relates to epoxy compositions used for gluing repair linings for pipes, metal structures for filling small defects, as anti-corrosion coatings

FIELD: hydraulic insulating materials for hydraulic insulation and corrosion prevention of concrete, metal and reinforced concrete structural surfaces.

SUBSTANCE: claimed composition contains: butadiene-styrene thermoelastomer, diepoxy resin, filler (carbon black), solvent (toluene), pigment filler, containing aluminum and iron hydroxides and additionally indene-coumarone resin, waterproofing agent (liquid polymethylsiloxane), and stabilizer.

EFFECT: composition with high adhesion to concrete and metal surface and improved strength.

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