SU1010090A1 - Polymeric concrete mix - Google Patents

Abstract

POLYMERBETON MIXTURE, including polyisocyanate, diethylene glycol, triethanolamine, dimethyl ketone, filler, characterized in that. that, in order to increase the compressive strength, heat resistance, reduce the thermal conductivity and simplify the technology for producing products from it, it contains distillation residues from toluene and diisocyanates as a polyisocyanate; components, wt.: Distillation residues of toluene diisocyanates 100 Dimethyl ketone 8-30 Diethylene glycol 20-50 O Tethanolamine 2 -5 l Silicate soda flour. 2-5: Mortar sand 200-400

Description

The invention relates to the production of polymer heat-insulating materials for the protection of underground and surface heat pipelines and other structures from heat loss, corrosion and corrosive environments. A polymer-concrete mixture is known, containing bottoms of polyisocyanates, diethylene glycol, andesitic flour, triethanolamine, silicon organic siloxane liquid, orthophosphoric acid fl. However, a product from this mixture of regions gives insufficient strength, heat resistance and thermal conductivity. The polymer concrete is closest to the invention and contains high molecular weight fractions of polyisocyanates, diethylene glycol, triethanolamine, silicon organic fluid, dimethyl ketone, and filler 2. Products from this mixture also have insufficient compressive strength, thermal conductivity and heat resistance. The purpose of the invention is to increase the increase in compression, heat resistance, decrease the coefficient of heat conduction and simplify the technology of obtaining products. This goal is achieved by the fact that a polymer concrete mixture, including polyisocyanate, dystilen glycol, triethanolamine, dimethyl ketone, filler, contains polystyrene as distillation residue and distilled residues of toluylene diisocyanates, and as a filler, construction mortar and, additionally, silicate flour, followed by flour. components, mac.uch: vat residues DISTILLATIONS of toluene diisocyanates Dimethyl ketone DiethyleneglyTriethanolamine Silicate acid2 5 dove flour Structural sand Distillation of distillation distillate y ilendiizotsianatov koditsii 1) Representat a technical poliizotsianoz which is produced parallel to the production of commercial toluene diisocyanate. Koditsin (TU 6-03-12-11-75) is a dark brown liquid with the number of isocyanate groups ..., the amount of toluene diisocyanate (TDI), total chlorine is 2.5, hydrolyzed chlorine is 0.5 and viscosity is at 25 ° C 3-30 P. Silicate - a lump is an amorphous vitreous alloy of alkaline silicates having the general formula R.20П8102, and a certain module, i.e. the ratio of the number of gram molecules of silica to the number of gram molecules of an alkali metal. The modulus is determined by the formula 1.032, A is the Si02 content,%, D is the content,; j 1.032 is the ratio of the molecular weight of sodium or potassium oxide to the molecular weight of silica. Soda-soda silicate-lump is used (GOST 13079-67), which is crushed before use in a ball mill. The resulting silicate soda flour in combination with triethanolamine is used as a converter catalyst, foaming agent and crosslinking agent for codicin. The technology of preparing the polymer concrete mixture consists in preparing the raw materials, dispensing the components and mixing them. For example, the manufacture of heat-insulating pipes is carried out in the formwork when filled with polymer-concrete mixture. Curing takes place at a normal temperature (l8-20 ° C) 0.5-1 h. 8 table. 1 given the formulation of the mixture according to the invention. In tab. 2 shows the properties of polymer mixtures according to the invention and the Prototype. Thus, when using the proposed mixture, the strength, heat resistance of the coi is increased while simultaneously reducing the thermal conductivity (the coefficient of hepatoprotein} decreases.

Distillation residues of toluene diisocyanates (codicin)

Dimethyl ketone Diethylene glycol

Construction sand

Silicate Soda Flour

Triethanolamine

100

100

110

90 5

"

35

nineteen

30 50

15

35

55

300 "00 T80

50

6 6

1.5

five

3.5 1.5 3.5

five

Bulk mass, kg / m 280 420 Strength at compression, MPa Heat resistance, K Water absorption in 2k h,% 3.0 2.8 Heat conductivity coefficient, 0, 0.06 kcal / m-h С Water pH value, 5 8, 5 th B1 stretch Viability of the mixture after preparation, min

Table 2 10 250, 5 5.0, 076 0.11

Foaming time

min

Foaming Frequency

Cure time at T-18-20 ° C h

Continued table. 2

10-20

5-7

2-3

0.5-1

Claims (1)

POLYMERIC MIXTURE, including polyisocyanate, diethylene glycol, triethanolamine, dimethyl ketone, filler, characterized in that, in order to increase compressive strength, heat resistance, reduce the thermal conductivity and simplify the technology for producing products from it, it contains distillation bottoms as a polyisocyanate toluene diisocyanates, and as a filler - building sand and additionally - silicate soda flour in the following ratio of components, parts by weight: VAT residues tolu distillation ilendiisocyanates 100 Dimethyl ketone 8-30 Diethylene glycol 20-50 T riethanolamine 2-5 Silicate soda flour • 2 -5 Building sand 200-400 0600101 ‘‘ nS