RU2032639C1 - Polymeric concrete mix - Google Patents

Abstract

FIELD: manufacture of building materials. SUBSTANCE: the polymeric concrete mix comprises, as an amine hardener, a mixture of polyoxypropylene amine with a molecular weight of 480-550 with dicyanoethyldiethylene triamine in a 1-3:1 ratio or a mixture of polyethylene amine with a molecular weight of 180-220 with dicyanoethyldiethylene triamine in a (- .33-1): ratio, the ratio of the components being as follows (wt %): 23.5-30.3 epoxydiane resin; 30.3-35.5 trig chloropolyol resin; 11.6-12.2 said amine hardener; 27.2-29.6 quartz sand. The resulting polymeric concrete has Grecelli attrition up to 0,003 g/cm², a water absorption of up 0.18 % for 24 hours and a deactivation coefficient of up to 0.2. EFFECT: improved properties of the building materials. 2 tbl

Description

 The invention relates to construction materials and can be used for the device of seamless floor coverings at nuclear power plants (NPPs).

 A number of specific requirements are imposed on coatings operated at nuclear power plants, namely chemical, thermal and radiation resistance; fire safety; high mechanical strength; wear resistance (abrasion); deactivability; manufacturability, etc.

 Known polymer concrete mixture comprising (in wt.) Epoxy resin 7-18, polyethylene polyamine 2.7-4.0, sodium benzenesulfochloramide trihydrate 0.3-6.0, the rest is filler (1) З.

 Closest to the claimed is a concrete mixture comprising epoxyboralkylresorcinol resin 12.4-15.4 wt. triglycidyl chloropolyol resin 18.7-8.31 wt. filler 58.3-62.0 wt. and polyethylene powder 1.55-3.55 wt. (2).

 Coatings based on this composition have high elasticity and chemical resistance. The disadvantages of the coating are low wear resistance, low decontamination, due to the high initial viscosity, low technological properties.

 The aim of the invention is to develop a polymer concrete mixture with high performance properties by increasing wear resistance, reducing water absorption and reducing the coefficient of decontamination while maintaining high chemical resistance, fire safety and the level of physical and mechanical characteristics.

 This is achieved by the fact that a polymer-concrete mixture comprising an epoxy resin, triglycidyl chloropolyol resin, an amine hardener and silica sand as an epoxy resin contains an epoxy diane resin, as an amine hardener it contains a mixture of polyoxypropyleneamine mol.m. 480-550 with dicyanoethyl diethylenetriamine in the ratio (1-3): 1 or a mixture of polyethylene polyamine mol.m. 180-220 with dicyanethyl diethylenetriamine in the ratio (0.33-1): 1 in the following ratio of components, wt.

Epoxy-Dianova resin 23.5-30.3
Triglycidyl Chlorine-Polyol Resin 30.3-35.3
Amine hardener 11.6-12.2 Quartz sand 27.2-29.6
The mixture contains epoxy-diane resin ED-20 mol.m. 390-430 cu triglycidyl chloropolyol resin 800-1300 cu High performance properties of the proposed polymer concrete mixture are achieved by combining in certain proportions an epoxy-diane resin and triglycidyl chloropolyol resin with amine hardener components: a low-activity hardener, dicyanoethyl diethylenetriamine (UP-0633) and highly active hardeners, polyoxypropyleneamine (PEA-500) or polyethylenepolyamine (PEA-500). Considering the different activity of hardeners DA-500 and PEPA, the ratio of highly active hardeners and dicyanoethyl diethylenetriamine should change. When using polyoxypropyleneamine mol. m. 480-550 (DA-500) it is from three to one part per one part of dicyanoethyl diethylene triamine, and when using PEPA from one third to one part per one part of dicyanethyl diethylene triamine.

 In addition to improving operational properties, for example, reducing abrasion by an order of magnitude, the technological properties of the composition are also improved by reducing the initial viscosity and increasing viability. Lower initial viscosity makes coating easier. The total cure time of the proposed composition is 6-7 days, while the total cure time of the prototype is 10 days.

 The polymer concrete mixture is obtained by the usual mixture of components: the resins are mixed, then the filler is introduced and, after mixing, an amine hardener is introduced immediately before coating. The finished polymer concrete mixture is poured onto a concrete base or screed and leveled with a brush or spatula. Hardening of the mixture occurs under normal conditions.

 The compositions and properties of the composition are presented in tables 1 and 2.

 Testing of samples of finished products is carried out according to standard methods.

The limit is
differences in
traction and
wearable elongation GOST 11262-80
Abrasion (wear resistance) GOST 20811-75
Resistance to de
action of liquid aggressive media GOST 9.403-80
Radiation resistance GOST 23678-79 Water absorption GOST 4650-80
Fire and explosion hazard GOST 121.044-89
Decontamination RTM 11-28-75
(Directory
by deactivating
capacity poly
dimensional mothers
Alov, M. 1972).

Claims (1)

 POLYMERBETONIC MIXTURE, comprising an epoxy resin, triglycidyl chloropolyol resin, an amine hardener and quartz sand, characterized in that it contains an epoxy diane resin as an epoxy resin and a mixture of polyoxypropyleneamine m.m. 480 550 with dicyanoethyl diethylene triamine in a ratio of 1 3 1, or a mixture of polyethylene polyamine m. Epoxy 23.5 30.3
Triglycidyl chloropolyol resin 30.3 35.3
Amine hardener 11.6 12.2
Quartz sand

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