SU1392049A1 - Polymer-concrete mix for heat isolation - Google Patents

Description

(21) 3977230 / 31-33

(22) 11/19/85

(46). 04/30/88. Bishch. Number 16

(71) Lipetsk Polytechnic Institute

(72) A.D. Korneev, S.K.Shulep, V.N. Kozomazov and A.M.Murashov

(53) 691.327: 678 (088.8)

(56) Smokin VF, Figovsky O.L. Polyester and polyurethane resins in construction. Kiev, Budivelnik, 1974, p.52.

. Patent of France No. 2052829, cl. From 04 To 25/00, 1971.

USSR Author's Certificate No. 695985, cl. From 04 To 26/18, 1977. l

(54) POLYMERBETON MIXTURE OF DPJ TEPLB- | INSULATION

(57) The invention relates to the composition of polymer concrete mixtures for the production of thermal insulation materials used as insulation.

pipelines. The purpose of the invention is to reduce the bulk water absorption, thermal conductivity coefficient and increase the specific toughness of the surface layer of the product. Polymer concrete mix includes, wt%: polyisocyanate 18.7-19.7; diethylene glycol 10.86-11.02; triethanolamine 0.67-0.69; hydrophobic cream, organic liquid 0.67-0.69; andesitic flour 66,1-66,9; suspension polystyrene 1-3. With a surface-hardened layer (without a surface-hardened layer): volume weight 390-450 (270-320) compressive strength 3.2-3.5 (1.1 - 1.3) MPa; thermal conductivity coefficient 0.04 - 0.10 (0.037 - 0.07) kcal / mh-deg; specific impact viscosity 8.0-8.2 (4.0) gx-cm / cm; water absorption by volume in 24 hours 0.8 (3.5)%. ..j 2 tab.

13920

This invention relates to compositions of mixed concrete mixtures for the production of heat insulating materials used as insulation for pipelines.

The purpose of the invention is to reduce the volumetric water absorption, thermal conductivity coefficient and increase the specific toughness of the surface layer of the product.

The technology for preparation of pre-mixed concrete mixes is as follows.

With stirring for 120 s, the polyisocyanate and diethylene sulcate are removed, mineral filling and polystyrene granules are introduced, stirred for 60 s, triethanolamine added, hydrophobicizing organosilicon

with an average mol. mass

860 used units The moisture content of dystily glycol is 0.1 wt.%, Andesite flour 0.5 wt.%. Suspension polystyrene granules of 0.5-4 mm containing 5 wt.% Isopentane.

After holding the samples for 28 days at 18-25 C and a relative humidity of 60-70%, they were characterized by properties, the indicators of which are given in table. 2

Invention Formula

Bone, bone and stirred to heat 30-50 C. The mixture is poured into hot air up to 60-70 ° C forms, the design of which allows an excess pressure of 5-7 kgf / cm. Due to the fact that samples are taken from molds,

Polymer concrete mixture for thermal insulation, including polyisocyanate, diethylene glycol, triethanolamine, hydrophobicizing silicone fluid, and andesite flour, characterized in that

after 30-40 minutes, the temperature of the decrease in the volume of water absorption, the coefficient of thermal conductivity

p & heating the mass in the form-100-11 o C.

Prepared polymer mixture, the compositions of which are given in table. one.

thirty

and increase the specific toughness of the surface layer of the product, it additionally contains suspension polystyrene in the following ratio of components, wt.%:

B. As a polyisocyanate, bottoms from the production of 4 |, 4-diphenylmethane diisocyanate with an average molecular weight of 500 conventional units, containing 4,4-diphenylmethane diisocyanate and 2 wt.%, With a high-molecular weight content of 71%, were used. .% and the content of isocyanate groups 26 May.%.

Hydrophobic silicone fluid - polymer structure

Polymer concrete mix for thermal insulation, including polyisocyanate, diethylene glycol, triethanolamine, a hydrophobic silicone fluid, and andesite flour, characterized in that, in order to reduce the volume of water absorption

and increase the specific toughness of the surface layer of the product, it additionally contains suspension polystyrene in the following ratio of components, wt.%:

Polyisocyanate 18.7-19.7 Distilenglycol 10.86-11.02 Triethanolamine 0.67-0.69 Hydrophobic Silicone Liquid 0.67-0.69 Andesitic Flour 66.1-66.9 Suspension Polystyrene1-3

Components

19,719,218,716,72

11.0210.9410.8610.03

.0,690,680,670,67

0,690,680,670,67

66.9066,566,166.89

1.0

2.03.0

Dimethylketone- .-- 5.02

Table 2

Indicators Composition with surface hardened properties of the layer

ProposedProduct1type

12 3

Bulk weight, kg / m 450 400 390 400 Strength limit

at compression, MPa 3,5 3,3 3,3 3,3 Thermal conductivity coefficient,,

kcal / mh 0.05 0.04 0.04 0.10 Specific shock

viscosity, kgf. cm / cm 8.0 8.2 8.0 5.0 Water absorption by volume in 24 hours,% 0.8 0.8 0.8 1.2

Compiled by S.Voronin. Editor N.Kishtulinets Tehred M.DidykKorrektor S. Cherni

Order 1863/27 Circulation 594Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

.in 1"..-.-----..- ------------------ ------

Production and printing company, Uzhgorod, st. Project, 4

Table 1

The content of components, wt.%, In the mixture

Offered 1 I 2 1 3

r: iii:

1.0

2.03.0

Claims (1)

The formula of the invention is liquid and is stirred until warming up to 30-50 ° C. The mixture is poured into molds heated to 60-70 ° C, the design of which allows to withstand excess pressure of 5-7 kgf / cm ² . Samples are removed from the molds after 30–40 min; the mass heating temperature during molding is 100–110 ° С. Prepared polymer concrete mixture, the compositions of which are given in table. 1. 20 Polymer-concrete mixture for thermal insulation, including polyisocyanate, diethylene glycol, triethanolamine, hydrophobizing silicone fluid and andesitic flour, characterized in that, in order to reduce volumetric water absorption, thermal conductivity _f and increase the specific impact strength of the surface layer of the product, it 30 additionally contains suspension C. vat residues of production of 4 |, 4'-diphenylmethanediisocyanate with an average molar mass of 500 conventional units, containing 35 n | of 4,4'-diphenylmethanediisocyanate 20 wt.%, With a high molecular weight content of 71 wt.% Were used as polyisocyanate. % and the content of isocyanate groups on May 26.%. Hydrophobic organosilicon liquid 40 — polystyrene structure polymer with the following ratio of components, wt.%: Polyisocyanate Diethylene glycol Triethanolamine Hydrophobic organosilicon fluid Andesitic flour Suspended polystyrene 18.7-19.7 10.86-11.02 0.67-0.69 0.67-0.69 66.1-66.9 1-3 Table 1 ————— —— ——————— ———————————— Components The content of components, wt.%, in a mixture Proposed Prototype Polyisocyanate Diethylene glycol Triethanolamine hydrophobic organosilicon liquid Andesitic flour Polystyrene foam Dimethyl ketone 19.7 19.2 11.02 10.94 .0.69 0.68 0.69 0.68 66.90 66.5 1,0 2.0 - .. - 18.7 16.72 10.86 10.03 0.67 0.67 0.67 0.67 66.1 66.89 3.0 5.02 table 2 Property metrics Composition with a surface hardened layer Proposed Proto- ------------- T ~ ” a type 1 2 Volumetric weight, kg / m ³ 450 400 390 400 Tensile strength under compression, MPa 3,5 s, s 3.2 3.3 Heat coefficient conductivity kcal / mch 0.05 0.04 0.04 0.10 Specific shock viscosity, kgf · cm / cm ² 8.0 8.2 8.0 5,0 Water absorption by volume in 24 hours,% 0.8 0.8 0.8 1,2