SU1014879A1 - Sealing composition - Google Patents

Abstract

GERMETIZIRUSCHAYA COMPOSITION chuck VC ca oligomeric carboxylate butadiene rubber having: molecular weight of 2500-3000, an amine: ny hardener, an epoxy resin, a filler and a plasticizer of m and n ich yu.sch and so / .chto in order to provide adhesion to concrete and increase in strength, it contains as a plasticizer transformer oil and additionally a latex of high molecular weight buttzdienacrylonitrile carboxylate rubber with the following ratio K (schonentes, wt.% Oligomeric butadiene acrylonitrile carboxylic Xylate rubber with a molecular weight of 35.5-46.8. 2500-3000 Epoxy resin, 7-14.2 la Amine turn (L С 2 # 34-2.9 Body Latex of high-molecular weight butadiene acrylonitrile. 17.6-21 , 2 and rubber Transformer 6-7.3 oil Else Filler 4 00 M CO

Description

The invention relates to the preparation of a hardening sealant based on latexes of high molecular weight rubbers and can be used in the field of building materials for sealing joints in concrete products, sealing joints between window openings, etc. The sealing mastics obtained on the basis of lattices of synthetic rubbers are known. for example, based on polychloroprene latex 111, | However, the compositions are of the type of non-hardening or drying hermetic coatings that do not contain a structuring rubber agent and thus have low strength properties. The tensile strength of such hermetic usually does not exceed 1-1.5 kg / cm-3. The closest to the technical essence and the obtained result to the proposed is an appropriate seal. Composition 3, containing the VVS.% Oligomeric COPOLY-meta-butadiene-acrylonitrile with methacrylic acid molecules with a mass of 2500-3000 40-60 Amine hardener 4-10 Epoxy resin 0.5-1.0 Filler 20-40 Plasticizer I butyl phthalate or a mixture of polyethylene based on diethylene glycol adipate 5-10 However, the composition does not have adhesion to concrete ( after cured or for 14 days at 20 ± 2 ° C was observed cohesive failure) and sufficient strength. The purpose of the invention is to provide adhesion to concrete and increase strength. The goal is achieved by sealing a composition containing an oligomeric butafile. Dienacrylate. Aryl carboxylate rubber with molar mass of 2500-3000, amine waxer, epoxy resin, napoleth, and plasticizer. and additionally vykomolekularny butadiene-acrylonitol carboxylate rubber latex at the same ratio of components, e,%: Oligomeric butadiene-acrylonitrile carbox plate rubber with a molecular weight of 2500-3000 35.5-46.8 Epoxy resin 11.7-14.2 Amine hardener "2.34-2.9 Latex of high molecular weight butadiene-acrylonitrile carboxylate rubberP, 6-21.2 Transformer oil6- 7.3 Filler Else The EIS-1 bifunctional epoxy resin is used as an epoxy resin, and Aerosil, limestone, etc., are used as a quality filler. Transformer oil (aromatic oil) has characteristics: kinematic viscosity, no more than 20 ° C at a pour point, ° C, not higher than 45 Tempera Flash travel in a closed cup, ° C, not nizhe135 acid number of the oxidized oils KOH per 1 g of an oil, m not bolee0,35 The overall stability against oxidation not bolee0,1 Table. 1 shows the recipe positions / in table. 2 - comparative; Real estate ..

Table

Latex high-molecular carboxylate bujadienak {ilonitrile rubber

Epoxy could

la

Dil it ipolim;

amine

Oligomeric carboxylate rubber (SKN-18-1A)

Flavored

petroleum oil

(transformer

h

Fillers:

Aerosil chalk (known to

Plasticizer (mixture of polyesters) 12.2 9.1

110 115 2; 5 3.3 Tensile strength is determined after 14 days at 20-22.

17.6 19.9 21.2

6.4

3.0

.11.7 13.3 14.2

ten

ten

2.34 2.6

2.9

60

46.8 39.8 35.5

40

7.3

ten

6.8

8.7

9.4

20

33.6 8.9 9.5

7.0

.Table 2

8.3 0.85

2.5 150

144

60

3.3 2.4

0.2 cure for sealant

1014879

From the presented table.2. Clear oil improves processability

that the resulting sealant is strong in the manufacture of sealant, reduces

tee to break exceeds the known temperature of its glass transition (in view of

while ensuring a satisfactory-low oil freezing point,

elasticity and adhesion to concrete, which allows the use of a sealant

In addition, the use as flavored petroleum as a 5v condition of low temperature softener.

Claims (1)

SEALING COMPOSITION, including oligomeric butadiene acrylonitrile carboxylate rubber with a molecular weight of 2500-3000, an amine hardener, epoxy resin, a filler and a plasticizer, it is necessary to ensure the adhesion to concrete and , it contains transformer oil as a plasticizer and additionally latex of high molecular weight butadiene acrylonitrile carboxylate rubber in the following ratio of components, wt.%! Oligomeric butadiene acrylonitrile carboxylate rubber with a molecular weight of 2500-3000 Epoxy resin Amine hardener Latex of high molecular weight butadiene acrylonitrile rubber Transformer oil Filler 35.5- 46.8 11.7-14.2 g 2 # 34-2.9 17.6-21.2 6-7.3 Rest SU „1014879 with a gross mass of 2500-3000, an amine hardener, an epoxy resin, a filler and a plasticizer, contains a transformer as a plasticizer