SU1763433A1 - Composition for hydro- and heat-insulation - Google Patents

Abstract

Use: for hydro and thermal insulation of building products. The essence of the invention: the composition contains (%) epoxy resin Dianova 30-34; amine hardener 3.5-6; liquid bitumen 5-15; expanded perlite fractions up to 5 mm 24- 46.5; TPP ash from burning fuel oil 5-15; organic solvent - the rest. Bulk density of the material obtained is 260-380 g / m, thermal conductivity 0.07-0.108 W / m-K. 2 tab.

Description

The invention relates to the production of building materials and can be used in the manufacture of products used for hydro and thermal insulation.

Known compositions based on epoxy resin, hardener, plasticizer (modifier) and filler (filler).

Known compounds have high bulk density and thermal conductivity, they are not sufficiently hydrophobic and heat resistant, as well as multicomponent.

Closest to the invention is a composition for waterproofing, including, by weight.h .:

Epoxy somla10-50

Amine hardener 1-5

Divinylstyrene

thermoplastic elastomer 0,5-2,0

Liquid asphalt5-10

Turpentine1-5

The known composition has high bulk density and thermal conductivity, insufficient hydrophobicity and high water absorption; during operation, a sweating (exudation) of a plasticizer to the surface of the hardened material occurs over time.

The purpose of the invention is to reduce the bulk density and thermal conductivity, eliminating the exudation of a plasticizer.

The goal is achieved in that the composition for hydro- and thermal insulation, including epoxy resin, amine hardener, liquid bitumen and organic solvent, additionally contains expanded perlite fractions up to 5 mm and TES ash from burning fuel oil in the following ratio, wt.%:

Epoxy Dianova

resin grade ED-20 30.0-34.0

Amine hardener 3,5-6,0

Liquid bitumen 5,0-15,0

Expanded perlite

fractions up to 5 mm24.0-46.5

cl

WITH

Vi o

with

Ј

with

Sl)

Ash TPP from

burning fuel oil 5,0-15,0

Organic1

solvent6.0-10.0

In the proposed composition using epoxy resin Dianova brand ED-20 according to GOST 10587-84.

The hardeners are amine-type hardeners of the type: UP-0618 (TU-15P-735-71) - UP-0620 mixture (TU 15P- 757-71) - hexamethylenediamine adduct with TEG-1 epoxy resin and I-6M hardener (VTU 6-95-71); polyethylene polyamine (PELA) (VTU TNPH P-10-57) (STU-49-25- 29-62) UP-583 (TU 15P-514-69) is a condensation product of triethanol triamine with phenol and formaldehyde.

0

As a plasticizer, liquid bitumens (GOST 11955-74) are used with a heating temperature of 60-70 ° C of the BT 25/40, BT 40/50, SG-25/40, MG-25/40 grades.

h,

As a filler, expanded perlite fractions up to 5.0 mm according to GOST 10832-83 are used.

The solvent used is ketone-methyl ethyl ketone according to TU 38-10243-72, acetone (tech.) According to GOST 2768-84 or cyclohexanone according to TU 6-03-556-73.

The ashes of TPPs use the ashes of 15 Hrazdan State District Power Station of the Armenian SSR, obtained from burning fuel oil, of the following composition, wt%:

Ash contains a large amount of active oxides that exhibit a catalytic effect.

Composition receive according to the following technology.

The calculated amount of epoxy resin, plasticizer, solvent is loaded into the mixer with Z-shaped blades and mixed for 15 minutes, then the hardener is introduced and mixed also for 10-15 minutes.

Lastly, expanded perlite and TPP ash (Hrazdan TPP ash) are added, stirring is carried out until the mixture is completely homogenized (10-15 min). The resulting mixture is poured into molds and cured at 20–25 ° C for 1 h, and then at 60–70 ° C 1–1.5 h.

The bulk density of the samples is determined according to GOST 17177-87, the thermal conductivity of the samples is 7076-87, the exudation (the plasticizer leaks out onto the surface) - visually using filter paper (presence of oil stains).

The insulation products obtained from the inventive composition are light hydrophobic thermal insulation materials of a porous-cellular structure.

Specific examples of the proposed composition and test examples for

justification of the limits of the contents of the components are given in table 1,

Data on the advantages of the proposed composition in comparison with the known and control examples are presented in table 2.

As can be seen from Table 2, the proposed composition has lower bulk density, thermal conductivity, and water absorption compared to the known, without exudation of the plasticizer.

Claims (1)

Invention Formula A composition for hydro- and thermal insulation, comprising an epoxy resin Dianova, an amine hardener, liquid bitumen and an organic solvent, characterized in that, in order to reduce bulk density and thermal conductivity, to eliminate the exudation of the plasticizer, it additionally contains expanded perlite fraction up to 5 mm and Ash TPP from burning oil in the following ratio of components, wt.%: epoxy Dianova resin 30-34; amine hardener - 3.35-6.0; liquid bitumen - 5-15; expanded perlite fractions up to 5 mm - 24-46,5; TPP ash from fuel oil combustion - 5-15; organic solvent - the rest. Table 1 table 2