RU2429266C1 - Polymer-mineral solution for impregnation of frame from mineral filler - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to a polymer-mineral solution to produce bioresistant building materials and items, for instance, a matrix for polymer-concrete floors of frame structure. The solution contains the following components, wt %: nonsaturated polyester resin on the basis of terephthalic acid - 30-40, cyclohexanone peroxide - 0.57-0.76, cobalt naphthenate - 1.14-1.52, ground basalt - 49.72-66.29, solution "Biocyc-T" - quaternary ammonium compound on the basis of resin acids in sterol with the weight ratio of 1:1 - 2-8.

EFFECT: invention makes it possible to produce a polymer-mineral solution with improved physical-mechanical properties and increased bactericide and fungicide resistance to micromycetes.

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Description

The invention relates to building materials and can be used in the manufacture of biostable building materials and products, for example, as a matrix in the manufacture of polymer concrete floors of a frame structure.

Known polymer-mineral solution, including a polyester binder, curing system, mineral filler and aggregate (Solomatov VI "Polymer-cement concrete and plastic concrete." - M .: Stroyizdat, 1967, p. 86-88).

However, polymer concrete from known mixtures are not suitable for use as matrix compositions of frame polymer concrete coatings, as they are characterized by high viscosity, contain large aggregates, and besides, they have low biostability.

The closest technical solution is a polymer-mineral solution containing an astringent - unsaturated polyester resin PN-1, based on the polycondensation product of diethylene glycol with maleic and phthalic anhydrides, a curing system - cobalt naphthenate, hyperiz, as a filler Portland cement and graphite M04P04 C04, S04 No. 46, No. 04; 25/02, publ. 10/15/1982).

The known composition of the polymineral solution is suitable for the manufacture of frame polymer concrete coatings, but has insufficient biostability.

The technical result consists in improving the physical and mechanical properties, increasing the biological resistance of the polymer-mineral solution.

The essence of the invention lies in the fact that the polymer-mineral solution, including an astringent, curing system and filler, contains an unsaturated polyester resin based on terephthalic acid as a binder, cyclohexanone peroxide and cobalt naphthenate as a curing system, ground basalt as a filler, and also an additional solution "Biotsik-T" is a quaternary ammonium compound based on resin acids in styrene with a weight ratio of 1: 1, in the following ratio of components (wt.%):

Terephthalic unsaturated polyester resin basis 30-40 Cyclohexanone peroxide 0.57-0.76 Cobalt naphthenate 1.14-1.52 Ground basalt 49.72-66.29 Quaternary ammonium compound solution based on resin acids in styrene with a weight ratio of 1: 1 2-8

The unsaturated polyester resin of the PN-19 grade on a terephthalic basis (TU 2226-085-05015213-01) is a liquid with a slight opalescence from light yellow to light brown in color. Conditional viscosity on the B3-246 viscometer of 19-26 s. The density at 20 ° C is 1.09-1.13 g / cm ³ .

Cyclohexanone peroxide - (TU 2417-031-05015213-95) is a colorless or yellowish transparent oily liquid. Physico-chemical indicators are as follows: density at 20 ° C - 1.05-1.08 g / cm ³ ; refractive index at 20 ° C - 1.463-1.464; mass fraction of active O ₂ ,%, not less than 4.6; mass fraction of H ₂ O,%, not more than 4.2; pH value is 3.1-6.7.

Cobalt naphthenate is a curing accelerator of the UNK-2 brand (TU 6-05-1075-76) - a low molecular weight liquid from pink to dark purple without lumps.

Ground basalt is a powder with a particle size of not more than 0.315 mm.

The quaternary ammonium compound based on resin acids (Biotsik-T) is soluble in water, as well as in some organic solvents (alcohol, dioxane, acetonitrile). It is stable in air, has a pronounced bactericidal and fungicidal activity. At the same time, bactericidal activity is manifested when the concentration in water is 0.05-0.1%, and fungicidal - 0.1-1%.

The manufacture of frame polymer concrete samples is carried out as follows: first, a frame mixture of the following composition is laid in steel molds, wt.%: Terephthalic polyester resin - 6.0; cyclohexanone peroxide - 0.12; cobalt naphthenate - 0.24; crushed stone of a fraction of 5-8 mm - 93.64. After curing the frame, its voids are filled with a polymineral solution. The specified polymer composition is prepared in the following sequence of operations: the microfiller is dried at a temperature of 100 ° C for 5 hours, and then cooled to room temperature. A weighted required amount of a terephthalic brand unsaturated polyester resin, cyclohexanone peroxide, cobalt naphthenate, a solution of a quaternary ammonium compound based on resin acids in styrene is gradually introduced into a working mixer and the mixture is thoroughly mixed. The required amount of ground basalt is introduced into the resulting mixture and mixed thoroughly until a color uniform mass is obtained. The prepared mixture is impregnated with the frame. After a day, the finished samples are removed from the molds and heat treated at a temperature of 80 ° C for 10 hours.

Tables 1 and 2 show the compositions of matrix and frame compositions and their physical and technical characteristics.

Tests of matrix composites and polymer concretes of the frame structure are carried out respectively on samples 1 × 1 × 3 cm and 4 × 4 × 16 cm in the compositions shown in Table 1.

Table 1 The content of components in the compositions, wt.% Suggested Polymer Mineral Solutions Famous (prototype) frame Components one 2 3 four 5 6 Terephthalic Acid Unsaturated Polyester Resin 27 thirty 33 36 40 43 - 6.0 Unsaturated orthophthalic anhydride polyester resin - - - - - - 35 - Cyclohexanone peroxide 0.52 0.57 0.63 0.68 0.76 0.82 - 0.12 Ground basalt 71.44 66.29 61.11 55.96 49.72 44.54 - - A solution of a quaternary ammonium compound based on resin acids in styrene with a weight ratio of 1: 1 0 2 four 6 8 10 - - Cobalt naphthenate 1,04 1.14 1.26 1.36 1,52 1,64 3.0 0.24 Hyperysis - - - - - - 1,5 - Portland cement - - - - - - 38 - Graphite - - - - - - 22.5 - Crushed stone of fraction 5-10 mm - - - - - - - 93.64

The test results of the matrices are given in table 2, and frame polymer concrete in table 3.

table 2 Properties of matrix compositions Indicators Suggested Polymer Mineral Solutions Famous (prototype) one 2 3 four 5 6 The limit of compressive strength, MPa 114 118 120 119 117 113 111 Bending Strength, MPa 21.5 22 24 23 22.7 twenty 19 Modulus of elasticity, MPa 10,000 11000 12000 11500 11300 10500 9300

Table 3 Properties of frame polymer concrete Indicators Suggested Polymer Mineral Solutions Famous (prototype) one 2 3 four 5 6 The limit of compressive strength, MPa 48 51 55 53 52 fifty 45 Bending Strength, MPa 16 eighteen twenty 19 18.5 17 16 Modulus of elasticity, MPa 20000 21000 23000 22000 21700 20500 20000

Biostability tests are carried out in accordance with GOST 0.049-91 according to methods 1 and 3. The following micromycetes are used as test organisms: Aspergillus oryzae (Ahlburg) Cohn; Aspergillus niger vgn Tieghem; Aspergillus terreus Thorn; Chaetomiurn globosum Kunze; Paecilomyces varioti Bainier; Penicillium cyclopium Westling; Penicillium fimiculoswn Thorn; Penicillium chrysogenum Thorn; Trichoderrna viride. The results are presented in table 4.

Table 4 Compositions Mushroom growth score, points Characteristics according to GOST Method 1 Method 3 one 2 four Not mushroom resistant 2 one one Mushroom resistant 3 0 0 Fungicidal four 0 0 Fungicidal 5 0 0 Fungicidal 6 0 0 Fungicidal Known for the prototype 2 one Not mushroom resistant

From a comparison of the performance of the impregnating compositions and polymer concrete of the frame structure compiled on the proposed and known impregnating compositions, it follows that the proposed composition of the polymer composition is more effective: physicomechanical indicators are increased (compressive strength, bending and impact strength 1.2 times); increased biological resistance (compounds become fungicidal).

Claims (1)

A polymer-mineral solution for impregnating a carcass from a mineral aggregate, including an astringent, curing system and filler, characterized in that it contains an unsaturated polyester resin based on terephthalic acid as a binder, and cyclohexanone peroxide and cobalt naphthene as a filler as a filler - basalt, as well as the optional solution “Biotsik-T” - a quaternary ammonium compound based on resin acids in styrene with a mass ratio of 1: 1, in the following ratio to mponentov, wt.%:
Unsaturated Polyester Resin based on terephthalic acid 30-40 Cyclohexanone peroxide 0.57-0.76 Cobalt naphthenate 1.14-1.52 Ground basalt 49.72-66.29 A solution of a quaternary ammonium compound based on resin acids in styrene with a weight ratio of 1: 1 2-8