SU796220A1 - Polymer-concrete mix - Google Patents

Description

(54) POLYMERBETON MIXTURE

one

The invention relates to building materials for the manufacture of chemically resistant floors, decorative finishing materials for the restoration of concrete and reinforced concrete products, for underwater construction work.

Polymer concrete mix 1 is known, including, wt%:

14.3-3.0 Epoxy Oligomer Maleic anhyd3, 4-0.7 read

Monomer for example

16,4-8,0 vinyl 2 / 3-0,2 Hardener Mineral filling 80-66 body 0.3-1.0 Pigment

The closest in technical essence and the achieved result to the proposed is a polymer concrete mixture, including, wt.%:

13.03-23.6

Methyl methacrylate 1,18-1,30 Benzoyl peroxide Tritichny amine apo0, 7-0,8 matic r yes Low molecular weight

0.12-0.13 paraffin 1.54-3.28 Stabilizer Else Filler

The stabilizer includes, wt.%

Acrylonitrile31,5

Polybutadiene 29.3

Polystyrene39,2

This mixture is used to increase the reactivity, strength, density, light and chemical resistance of concrete, as well as reduce the emulsions 2.

However, the known polymer mixtures, due to low viscosity and an increased wetting effect of the monomer, are characterized by high thixotropy, as a result of which even

with a small degree of filling becomes unworkable

moreover, due to the high content of monomer, they are characterized by rolling shrinkage and are less cost effective.

The purpose of the invention is to reduce the viscosity of the mixture, as well as reduce shrinkage and cost of products. The goal has been achieved in that a polymer blend comprising methyl methacrylate, benzoyl peroxide, a tertiary aromatic amine, low molecular weight paraffin, stabilizer, and a filler

additionally contains an amino aldehyde resin 2,4,6-triamino-1,3,5 triazine of the general formula R-NHCH, J.OCH2NH-R, where R is dimethylol 2,4,6-triazine in the following ratio of components, wt.%:

9.8-12.2

Methyl methacrylate 0.59-0.73

Benoyl peroxide

Tertiary amine flavor

0,29-0,37

aromatic p yes

Low molecular weight 0-0-0-0 raffin 0.98-1

Stabilizer

Amine aldehyde resin

2,4, b-triamino-1,3,5

triazine of the general formula

K-YNSN OCHAHNN, where R dimethyl 2,4,6-tria0, 048-0, zina El

Filler

Stabilizer includes wt.%:

Acrylonitrile31,5

Polybutadiene29,3

Polystyrene39,2

The proposed polymer concrete mixture is characterized by high-speed workability with a filling degree of up to 1/10, i.e. twice as famous. A small amount of plasticizer (0.5-1% by weight of methyl methacrylate) does not reflect on the physicomechanical properties and chemical resistance of the polymer concrete mixture. At the same time, the consumption of methyl methacrylate is almost halved, which makes it possible to reduce the shrinkage of the polymer concrete mixture by a factor of about 2.5 times.

Hardening accelerator - tertiary aromatic amine

Low molecular weight paraffin stabilizer

Einoaldehyde resin 2,4,6-triamine-1,3,5 triazine of General formula

Polymer composition is technological and does not require special devices when compacting the mixture. The technology of preparation of the developed polymer concrete mixture includes the dosing of components, mixing and forming (if pieces are made) or laying the mixture on the underlying layer (with coating devices).

The dosage of the constituents is carried out on weighing machines or weights. Accuracy of dosing should be,%: Methyl methacrylate i 1, initiator (benzene peroxide) ± 0.2, accelerator (tertiary aromatic amine) ± 0.1, stabilizer + 0.8, low molecular weight paraffin ± 0.1, plasticizer (amino aldehyde resin) ± 0.1, filler-. ± .2.

When using the developed polymer mixture, it is more convenient to preliminarily prepare from it a two component mixture of the type Methyl methacrylate, a tertiary aromatic amine, low molecular weight paraffin, and an amino aldehyde resin 2,4,6-triamine-1, 3.5 triazine of the general formula . where R is dimethylol 2,4,6-triazine; filler, benzoyl peroxide, stabilizer.

The preparation of the polymer mixture from the two-component composition is carried out in forced-mix solution mixers. Compaction of the mixture is performed on standard vibration settings.

Polymer concrete mixtures of the compositions listed in Table 2 are prepared. one

Table

0.29 0.33 0.37 0.05. 0.07 0.10 0.982 1.10 1.22

Physico-mechanical properties and chemical resistance of polymer concrete obtained by testing 40

91

90

98

and% 0.3

The need of the developed polymer mixture is about 20 thousand tons. The economic effect of introducing the polymer concrete mixture is 2 million rubles.

formula of invention

Claims (2)

1. Polymer concrete mixture, including methyl methacrylate, benzoyl peroxide, tertiary aromatic amine, low molecular weight paraffin, stabilizer and filler, which, in order to reduce the viscosity of the mixture, as well as reduce shrinkage and cost of products, it also contains amino-aldehyde resin-2,4,6-tri-samples made from mixtures listed in table 1, are presented in table. 2 Table 2 40 45 thirty 3.8 4.1 3.9 3.8 0.32 0.32 0.33 0.33 2.5 1.0 1.1 1.1 1.2 Higher concrete tensile strength 10.5 11 11 11 1.0 0.4 0.41 0.42 91 91 91 90 90 90 95 98 98 0.3 0.3 0.3 mino-1,3,5 triazine of the general formula I .K-LCHCH2. Fails, where R is dimethylol OJ 2,4,6-triazine in the following ratio of components, wt.%: Methyl methacrylate Benzoyl peroxide Tertiary aromatic amine Low molecular weight paraffin Stabilizer Aminoaldehyde cm 2,4,6-triamino-1,3, triazine of the general formula R-NHCHjOCHjNHR, where R is dimethylol, 2,4,6-triazine Filler 7796220 8 2. The mixture according to claim. 1, I distinguish — Sources of information, This is due to the fact that the stabilizer is taken into account during the examination includes, wt.% 1. USSR authorship Acrylonitrile 31.52. USSR author's certificate Polybutadiene 29.3. According to Application No. 2621710 / 29-33, Polystyrene 39,2kl. C 04 B 25/02, 05/26/78.  365341, class C 04 B 25/02, 1970,