RU2305694C1 - Method of preparation of mastic - Google Patents

Abstract

FIELD: preparation of mastics for sealing-up the welds and/or bonding inedible materials such as wood, iron, brick, polymers; repair of chemical equipment; erection of pipe line fittings for hot and cold water supply systems and sewage systems.

SUBSTANCE: proposed method consists in simultaneous preparation of two compositions followed by mixing at required ratio at which time of hardening and conversion of mastic from flow state to hardening state is no less than 1 h at temperature of from 40 to 20±2°C. First composition in form of resin is obtained through successive addition, mixing and grinding in trough every 60 minutes at temperature of from 10 to 26°C of the following components: 10.715% of dioctyl phthalate with 31.229% of ЭД-20 epoxy resin, 3.15% of opicil-175, 52.144% of polyvinyl chloride ПВХ-ЕП-6602-C, 3.036% of titanium dioxide and 0.00859% of commercial carbon. Product thus obtained is homogeneous of light-gray color at density of 800 Pa·s. Second composition in form of hardening agent is obtained through successive addition, mixing and grinding in trough every 30 minutes of the following components: 5.93% of dioctyl phthalate with 23.75% of euretek, 0.4948 of opicil-175, 0.989% of calcium oxide, 54.437% of titanium dioxide, 14.384 of chalk of MMCX-2 grade and check of sample taken from trough. Product thus obtained has viscosity of 248 Pa·s. Coat of this mastic withstands temperature of from minus 40 to plus 190°C.

EFFECT: enhanced efficiency.

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Description

The invention relates to the field of chemical production, the production of which is of paramount importance for sealing welds and / or gluing non-food materials consisting of wood, iron, brick, polymers. To a greater extent, the new product is applicable in industrial conditions for repairing chemical equipment and in public utilities, when installing pipeline equipment for hot, cold water supply, drinking water supply and for supplying liquid media in sewage systems.

A technical solution is known, according to the patent RU 2186817, C1, 08/10/2002. The mysticism of the patent / 1 /, has not been tested under conditions of temperature operating conditions from -40 to + 190 ° C, and a new technical solution allows to obtain a thermo- and wear-resistant compound subject to temporary wear from the influence of external and internal factors, temperature and humidity in the pipe connections.

The objective of the new technical solution is to increase the technological capabilities of the protective coating.

The problem is achieved in that the method of producing mastic, which consists in the fact that the first composition is obtained in the form of a resin by successive addition, mixing and grinding in a bowl every 60 minutes at a temperature of 10 to 26 ° C of the following components: 10.715% dioctyl phthalate with 31.229% epoxy resin brand ED-20, 3.15% opicil-175, 52.144% polyvinyl chloride PVC-EP-6602-C, 3.036% titanium dioxide and 0.00859% industrial carbon, to obtain the finished product of a homogeneous light gray color with a viscosity 800 Pa · s; in another bowl, a second composition is obtained in as a hardener by successive addition, mixing and grinding every 30 minutes of the following components: 5.93 dioctyl phthalate with 23.75% euretec, 0.4948% opicil-175, 0.9897% calcium oxide, 54.437% titanium dioxide, 14.384% chalk brand MMS-2, by controlling by sampling from a bowl, to obtain a product with a viscosity of 248 Pa · s, then the first and second compositions are combined and mixed, finally the ratio between the compositions is selected, at which the curing time of the mastic components, the transition of the mastic from the mobile state to the curing state made up at least 1 hour in the temperature range from 40 to 20 ± 2 ° C.

Description of the method of obtaining mastic.

The method of obtaining mastic, which consists in the fact that:

1. receive the first composition in the form of a resin by successive addition, mixing and grinding in a bowl every 60 minutes at temperatures from 10 to 26 ° C of the following components: 10.715% dioctyl phthalate with 31.229% epoxy resin brand ED-20, 3.15% opicil- 175, 52.144% of PVC-EP-6602-C polyvinyl chloride, 3.036% of titanium dioxide and 0.00859% of Gothic carbon, to give the finished product a homogeneous mass of light gray with a viscosity of 800 Pa · s;

2. in another bowl, the second composition is obtained in the form of a hardener by successive addition, mixing and grinding every 30 minutes of the following components: 5.93 dioctyl phthalate with 23.75% euretec, 0.4948% opicil-175, 0.9897% calcium oxide, 54.437% titanium dioxide, 14.384% chalk grade MMS-2, controlled by sampling from a bowl, to obtain a product with a viscosity of 248 Pa · s;

3. combine and mix the first and second compositions, finally choose the ratio between the compositions in which the curing time of the mastic components, the transition of the mastic from the mobile state to the curing state, is at least 1 hour in the temperature range from 40 to 20 ± 2 ° C.

An example of the method.

The industrial usefulness of the new technical solution lies in the high degree of usefulness of the created coating, which withstands the temperature of exposure to the surfaces it closes from the above-mentioned materials at -40 to + 190 ° C. The increased acid resistance of the mastic composition increases the duration of the welded joints closed with a coating based on titanium dioxide.

The economic efficiency of the new technical solution lies in the universal selection of coating components made on the basis of mastic obtained by serial connection and grinding of the components of the chemical process. Rights to mastic are regulated by know-how, which maintains hourly suitability for applying mastic on the surface of products, called the life time of the mastic mixture.

Opicil-175 is a silica.

Euretec product, for example, grade 545 (Safety Data Sheet in accordance with 91/155 / EEC) is a polyaminoamide.

Claims (1)

The method of obtaining mastic, which consists in the fact that the first composition is obtained in the form of a resin by successive addition, mixing and grinding in a bowl every 60 minutes at a temperature of 10 to 26 ° C of the following components: 10.715% dioctyl phthalate with 31.229% epoxy resin brand ED-20 , 3.15% opicil-175, 52.144% polyvinyl chloride PVC-EP-6602-C, 3.036% titanium dioxide and 0.00859% industrial carbon, to give the finished product a homogeneous mass of light gray with a viscosity of 800 Pa · s, in in another bowl, a second hardener composition is obtained by sequentially adding by mixing, rubbing every 30 minutes the following components: 5.93 dioctyl phthalate with 23.75% euretec, 0.4948% opicil-175, 0.9897% calcium oxide, 54.437% titanium dioxide, 14.384% chalk grade MMS-2 , by controlling by sampling from a bowl, to obtain a product with a viscosity of 248 Pa · s, then the first and second compositions are combined and mixed, the ratio between the compositions is finally selected at which the curing time of the mastic components, the transition of the mastic from the mobile state to the curing state is not less than 1 h in the temperature range from 40 to 20 ± 2 ° C.