SU908769A1 - Polymerconcrete mix - Google Patents

Description

I

The invention relates to building materials, namely, compositions of polymer concrete mixtures used for monolithic flooring.

A known polymer mixture based on epoxy resins and aliphatic amines, used for monolithic flooring lj.

This mixture provides chemically resistant coatings with high wear resistance, but shrinkage stresses occur during the hardening of epoxy binders.

A polymer-concrete mixture is also known, which includes an epoxy-aniline resin, a polyamide hardener and a filler 2.

The disadvantages of this mixture are large volume shrinkage and low wear resistance.

Closest to the present invention is a polymer concrete mixture containing an epoxy resin Dianova.

amine hardener, accumulator and propylene carbonate modifier W}. The known mixture has high elasticity, but is characterized by high shrinkage and low wear resistance.

The purpose of the invention is to reduce shrinkage and increase the wear resistance of the polymer concrete mix.

This goal is achieved by the fact that the polymer concrete mixture, including epoxy resin, amine hardener and accumulator, contains epoxy cyclocarbonate diano oligomer containing 13-16 epoxy groups and 3-5% cyclocarbonate groups as epoxy resin, with the following ratio of components, May. b .: Epoxycyclocarbonate diano oligomer100

Amine Hardener12-47

3908769

1 filler 270-433 The presence of an epoxy cyclocarbonate diene oligomer in a polymer concrete mixture causes the formation of an epoxyurethane polymer with an interpenetrating net structure, thereby reducing the shrinkage of the mixture and increasing its wear resistance. The composition of the mixture can also include -pigments, spill improving additives, flame retardants and diluents.

Table 1 shows the compositions of the known and proposed polymer concrete mixes; in table 2 - their physical and mechanical properties. The proposed polymer concrete mix has low volumetric shrinkage (up to 0.04%) and high wear resistance (durability coefficient 1.29-1.39; abrasive jet wear up to 0.228 cm / minJ. Table 1

EDSmola ETSK Epox Resin Propylbicarbonate

Polyethylenepolyamine Diethylenetriamine

Hardener UP-0618 UP-606/2 Accelerator Quartz sand Marshalite

Quartz dust

KP-3

Titanium dioxide Volume shrinkage,% 0.86 0.07 Internal central voltage 0.16 0.11 stress, MPa

100 100

100

100

14

12 0.09 0.04 0.04 0.12 0.09 0.07

Specific impact viscosity, kPa

Coefficient of durability (. According to Figovsky's formula)

Abrasive jet wear, CMVMHH

Worn half fixed by abrasive, cm / 50 cm

Strength at stretching, MPa

Coefficient of resistance in the environment

Continuation tabl. "2

13.8 13.7 14.9 14.8

37 1.33 1.39 1.36

0,237 0,228 0,268 0,264

2.4

2.2

2.5

2.5

24

23

28

29

Claims (1)

Claim A polymer concrete mixture comprising an epoxy diane resin, an amine hardener and a filler, characterized in that, in order to reduce shrinkage and increase wear resistance, the mixture contains, as an epoxy diane resin, an epoxy cyclocarbonate diane oligomer containing 13-16% of epoxy groups and 3-5% cyclocarbonate groups, in the following ratio of components, parts by weight: Epoxycyclocarbonate Dianne Oligomer 100 Amine hardener 12-47 Filler 270-433