SU1604782A1 - Heat-insulating composition - Google Patents

Abstract

The invention relates to the field of building materials and can be used for thermal insulation of building envelopes, industrial equipment and pipelines with a temperature of insulated surfaces from (-60) to (+130) ° C. The aim of the invention is to eliminate the consumption of bitumen, as well as to reduce water absorption and thermal conductivity of the material obtained. Thermal insulation composition contains, wt%: asphalt deasphalting 1.8-2.8

neutralized pond acid tar 6.5-9.0

Distillation residue from butyl acrylate distillation 0.4-1.0

expanded perlite sand else. Water absorption of the obtained material in 24 hours is 2.8-3.0 vol.%, Thermal conductivity in a dry state at 25 ° C is 9.063-0.065 kcal / g ^{. m.} hail. 3 tab.

Description

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about

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The invention relates to building materials and can be used in the device of thermal insulation of building envelopes, industrial equipment and pipelines with a temperature of insulated surfaces from -60 to.

The aim of the invention is to eliminate the consumption of bitumen, as well as to reduce water absorption and thermal conductivity of the material obtained.

The composition is prepared as follows.

The pond acid tar, neutralized by dolomite flour, is heated to 90-1CO ° Cs and then heated to 80-90 with asphalt deasphalting and distillation residues from butyl acrylate distillation are added to it under stirring. After homogenization, the temperature of the mixture is increased to 150-160 ° C and poured into the mixer of heat insulating mass, pre-loaded with perlite sand heated to 150-180 ° C. Mixing in the mixer is carried out until a homogeneous mass is obtained. Then mix

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poured {put in a form and receive monolithic sheets, plates, etc.

In the manufacture of heat-insulating compositions use: expanded perlite sand, having a bulk density of 80-150 kg / m, the content of grains 0.16 mm in size is not more than 10%, and grains more than 2.5 mm in size not more than 15% i acidic tar, composition and physical chemical properties, which are listed in Table 1.

In addition, for the manufacture of a composition used; asphalt deasphalization is a substandard product of residual oil production at Maceji refineries and has the following indicators:

The softening temperature, s, 45-60

Penetration 10

at 25 ° С, mm 40-80

Extensibility at

25 ° С, cm

30-85

0.1-0.4

The content of water-soluble compounds, May.%

as well as bottoms from the distillation of butyl acrylate used as crosslinking and water-repellent components of the binder, formed in the production of plexiglass, are a brown-brown viscous liquid having the following chemical composition, wt%: thiodiphenylamine 1; butyl acrylate 60.7, - butanol 22.8; tetra butoxytitanium

The content of organic mass, wt.% The content of water-soluble compounds, wt.%

Water content, wt. Content of mechanical impurities, wt.% Acid number, mg - KOH / g of tar. Softening temperature, C Penatrazia 10 at, mm Extensibility at

Q

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Examples of the specific composition and properties of the material obtained are given in Tables 2 and 3.

As can be seen from the above data, the material from the proposed composition has a low water absorption and thermal conductivity, while the preparation of the composition does not consume bitumen.

Claims (1)

Invention Formula Thermal insulation composition, including expanded perlite sand and oil-sting, characterized in that, in order to eliminate bitumen consumption, as well as reduce water absorption and thermal conductivity of the material obtained, it contains asphalt de-asphalt oil and neutralized pond acid as oil-bearing; tar and addition bottoms from the distillation of butyl acrylate at the following ratio. Research Institute of Components, wt.%: Asphalt deasphalting 1, 8-2.8 Neutralized pond acid tar 6.5–9.0 Distillation residues from butyl acrylate distillation 0.4–1.0 Expanded perlite sand Else 60-80 7-10 1-2 5-8 1-3 80-90 10-70 , cm 3-6 Temperature temperature, C5200 Density, kg / m 5980-1000 Viscosity at, Pa-s25-30 Table 2 Content, wt.%, In the composition Components the known clause - STN-TT1 I .. JjJ..L-i ± Neutralized sour pond tar - 6.5 8.0 8.3 9jO Asphalt deasphalting - 2.8 2.3 2.0 1.8 Vat residues from butyl acrylate distillation - 1.0 0.9 0.7 0.4 Oil grade bitumen BK 90 / 10-11,1 Perlite 88.9 89.7 88.8 89 88.8 Table 3 g Physical-mechanical data for the composition chesky properties1 well-known stofet 1..1.1..1- Average density, kg / m 360 362 353 355 365 Compressive strength limit, MPa0.15 0.13 0.15 0.15 0.15 Water absorption for 24 hours,% volume 52.8 2.83 2.93.0 Thermal conductivity in a dry state at kcal / hr. Trad 0.084 0.063 0.063 0.064 0.065 16047826 Continued tabl, 1 3-6