SU947131A1 - Polymer concrete mix - Google Patents

Description

(54) PRIMERBETON MIXTURE

The invention relates to polymeric building materials, namely, to the composition of polymer mixtures based on furfurol acetone monomer. Polymer concrete is known, including the following ingredients, May. %: Furfuralite and monomer5-7 Polymerization catalyst1-1, 5 Filler Else Benzosulfonic acid Ll is used as a polymerization catalyst. The shortage of this mixture is its low viability. In addition, the use of benzenesulfonic acid is produced in the molten state during drilling up to 5 ° -60 ° C, which is technologically inconvenient and dramatically increases the toxicity of production. In this case, the bsphonic acid is not fully bound to c. polymer, and under certain conditions, you leach out of polymer concrete, break the structure and reduce the strength of the material. Closest to the proposed technical essence and the achievement of its most result is a polymer concrete mixture comprising furfurol acetone monomer, a polymerization catalyst, and a filler. A mixture of Petrov’s contact with sulfuric acid in a ratio of 1: 1 to 2: 1 t2j is used as a catalyst. The polymer concrete mix T1 is known to have a reduced toxicity. The rapid opening of the monomer leads to the formation of a polymer with insufficient space & space splitting and significant internal stresses. The purpose of the invention is to increase the lifespan of the half-concrete mixture and the strength of polymer concrete in compression and beating. This goal is achieved by the fact that the polymer mixture for products undergoing heat treatment, including furfurolapetone monomer, catalyst

polimeterstasch and filler, contains as a catalyst for polymerization a mixture of quenched sulfuric acid B phenol in relation to the following content of components, May. %:

Furfurolapeton

monomer6-15

Catalyst polymerizating, 24-3.75

Our lnigel The rest

The preparation of the polymer mixture is as follows.

Prepare a polymerizate catalyst. For this, phenol is treated with concentrated sulfuric acid (1.84 g / cm). The resulting mixture is applied as a hardener or with an auele of increased & n viability effect. The half-concrete mixture is heated to 100-200 ° C and held for 0.5-3 hours.

The furfurol acetone monomer is then mixed with a hardener and part of a filler in the mixer. The mixture is stirred for 2 minutes and the remainder of the filler is added.

PrPP blend polymer blend is placed in a forging and, after pre-dredging, it is used to make dry products in the weighting chamber in order to increase the degree of curing of the binder.

When phenol is mixed with concentrated sulfuric acid at room temperature, predominantly ortho-phenolsulfonic acid is formed. Heating the mixture obtained to 1OO-2OO C with an exposure time of 0.5–3 h results in the formation of mainly parafen olsulfonic acid. At room temperature, phenolsulfonic acid does not break down ({{turfurolacetone monomer, but, on the contrary, inhibits the reaction of cationic

polymerization. Moreover, para-phenolsulfonic acid inhibits polymerization more strongly than ortho-phenolsulfonic acid.

Both orthotics and para-phenolsulfonic acids are capable of accepting an additional number of ducts, since phenolic oxygen has two filled orbital orbitals filled. This leads to the fact that phenolsulfonic acids deactivate by mixing (due to the formation of hydrogen bonds) protons of sulfuric acid. As a result, the reaction of cationic polymerization of furfural and monomer with proton hardeners is slowed down.

Ortho- and para-phenolsulfonic acids are also involved in the curing of furfurol-acetone monomer, as they are activated by the resonant interaction of an aromatic system with phenolic hydroxyl. The deactivating effect of the sulfo group on the aromatic system is overlapped by the activating effect of the hydroxy group. Monosulfophenols react by polycondensation with furfural contained in the monomer.

This leads to an increase in the strength of polymer concrete and the chemical stability of the polymer in an alkaline medium.

In tab. 1 presents the compositions of the proposed and known catalysts, and in table. 2 - compositions of the proposed and known mixtures.

The properties of the polymer mixture and polymer concrete are presented in table. 3 ..

Increasing the viability of the polymer concrete mixture, as well as the strength characteristics of the polymer concrete, allows to mold large-sized structures and increases labor productivity.

Table

Furfurol Acetone Monomer

Catalyst in limerizatga

Filling: Andesite

Viability, h0,5

Strength, MPa:

compression 70.0

Claims (2)

Flexural 10 Claims of Polymer concrete mix for heat treated products including furfurol acetone monomer, polymerization catalyst and filler, characterized in that the purpose of increasing the viability of the polymer concrete mix and. the strength of polymer concrete for compression and bending, it contains as a catalyst for polymerization a mixture of concentrated sulfuric acid and phenol in a ratio of 1-5: 1 with the following content of components, May. %: Furfolacetone monomer6-15 15 12 1.2 3.75 0.24 T and Blitz 24 ten 115.0 120, O 90.0 13.0 13.2 12.5 Catalyst poly0 .24-3.75 meriiration Filler Else Sources of information taken into account during the examination 1.Zaichenko A.R., Kasn V.H. New corrosion-resistant construction of flooring concrete for industrial construction. K., Budvelnik, 1976, p. 12. 2. Moschansky N.A. Khimicheoki resistant mastic, putty and concrete based on thermosetting resins. M., stroiizdat, 1968, p. 20.