SU1073232A1 - Initial composition for making heat-insulating material - Google Patents

Abstract

FRAWN MIXTURE FOR MANUFACTURING HEAT-INSULATING MATERIAL, including perlite sand, fiber / fiber component, from the group of: asbestos, wood chips and mineral wool, and a binder that is different in that, in order to improve the strength of bending and compression, the bead, and the other, as well as. It contains, as a binder, expanded polystyrene granules in the following proportions, May. %: Perlitic sand 70.0-94.0 Fibrous component2, 0-10.0 Granulated foam polystyrene 4.0-20.0

Description

About 00 N9 CO Nd The invention relates to the production of building materials and can be used to make enclosures; thermal and sound insulating structures. The well-known raw material mixture for the fabricated tenjYuizol of biological material, -containing, may. %: polystyrene foam binder 10, 5 large porous mineral aggregate 60-80 water 8-lDt urea-formaldehyde resin MF-17 1.53, 0 Ij. Also known are raw materials containing, in wt.%: Slag pumice, 93.0-96.4, granules of foamed polnstrol, 3.6-7.0. 2. The disadvantages of these raw mixtures for the manufacture of heat-insulating material are rather large bulk, high thermal conductivity and low flexural strength. Closest to the invention is a raw material mixture for the manufacture of a thermal insulating matriale 3j, comprising, in wt%: Expanded perlite. 73-97 Alkaline component 2-12 Mineral fiber 1-25 The disadvantages of the known mixture are relatively low strength and high thermal conductivity. The purpose of the invention is to increase the bending and bending strength and to reduce the thermal conductivity coefficient of the material. The goal is achieved by the fact that the raw material mixture for the manufacture of insulating material, including perlite sand, a fibrous component from the group: asbestos, wood chips, mineral wool and a binder, contains, as a bond, granules of expanded polystyrene at quantitative ratios, May . %: Perlitic sand 70.0-94.0 Fibrous component .2.0-10.0 Granules are foamed. polystyrene 4.0–20.0 Thermal insulation material from this mixture is prepared using the following technology. wet perlite sand is mixed with granules of foam polystyrene and a fibrous component is added to this mixture (mineral wood chips, etc.). After thorough mixing, the mixture is placed in foomes and subjected to heat treatment in a dry air environment according to the mode: temperature rise to 80-98s - 10 minutes. Stay at this temperature for 30-40 minutes and cool to room temperature. Example 1. 70.0% by weight of perlite sand (GOST 10832-74) is mixed with 20.0% by weight of foamed polystyrene granules (VTU KHZ No. 38-60) and 10% by weight of wood chips. The perlite sand is previously wetted by spraying with water to a moisture content of 6% for better mixing with other components. Wood shavings are not specifically subjected to any kind of technological processing, they are taken as they are supplied from woodworking enterprises, as a departure from wood processing. Thoroughly mixed mixture of components of the raw material mixture is placed in metal forms of cubes and beams and subjected to heat treatment in a dry air environment according to the mode: temperature rise to, exposure, at this temperature for 40 minutes. After cooling the samples of the raw material mixture to room temperature, they are subjected to tests to determine the physicomechanical properties. Example 2. 82.0% by weight of perlite sand (GOST 10832-74) is mixed with 12% by weight of expanded polystyrene granules (VTU KHZ 38-60) and € €.% Of wood chips. Before this, perlite sand is moistened by spraying with water up to 8% moisture for better adhesion to other components of the 1I. Wood chips are used such as are supplied from woodworking enterprises. The mixers mix the components of the raw mix, stack them in metal forms of cubes and beams, and heat them up in dry air according to the regime; the rise was up to, holding at that temperature for 35 minutes. After cooling the samples of the raw material mixture to room temperature, they are subjected to tests to determine the physicomechanical properties. PRI and MERE 3. 94.6% by weight of perlite sand (GOST 10832-74) is mixed with 4% by weight of granules of foamed coloule irol (VTU KHZ 3 8-60) and 2% by weight of wood chips. Before this, the perlite sand is moistened by spraying with water with another 10% moisture for better adhesion to other 4 elements. Wood chips are used such as are supplied from woodworking enterprises, a thoroughly mixed mixture of components of the mixture is placed in metal forms of cubes and beams and subjected to heat treatment in dry air according to the mode: temperature rise to 30 minutes at this texture. After cooling the raw material samples:

to ksmnatnoy temperature to expose them to tests for the determination of chelation f. zyko-mechanical properties.

Approx 4. 86.0% by weight of perlite sand (GOST 10832-74) is mixed with 12% by weight of expanded polystyrene granules {VTU KHZ 38-60) and with 2 ppm.% Mineral wool. Before this, the perlite sand is moistened by spraying with water up to 10% moisture by better adhering to other components. The mineral wool fibers are introduced into the mixture in small portions (to avoid clumping) with continuous stirring of the mixture. The mixed mixture of the components of the mixture is placed in metal forms of cubes and beams and subjected to heat treatment in a dry air environment according to the mode: temperature rise to, holding at this temperature for 3.0 minutes. After cooling the samples of the raw mixture to room temperature, they are subjected to tests to determine the physical and mechanical properties.

PRI me R 5,84,0 may. % perlite sand (GOST .10832-74} mixed with 12.0 May.% granulated polystyrene granules (VTU KHZ 38-60) and 4 wt.% asbestos. Prior to this, perlite sand is moistened with a spray to 10% moisture for better adhesion with other components. Asbestos fibers are introduced into the mixture in small portions (to avoid clumping) with continuous stirring of the mixture. A thoroughly mixed mixture of the components of the raw mixture is placed in metal cubes and baloves and subjected to heat treatment, as in Example 4. After cooling the samples with revoy Smets to room temperature, their rootstock rgayut ist | ytani m f ztoo to determine mechanical properties.

The table shows the physicomechanical properties of the samples of the raw mix.

The lower limit of the percentage of granules of foam poule {yla

4% received. This is the minimum amount of material that, when cooked, softens and binds all the components into a strong piT conglomerate. At a flow rate of foamed polystyrene of less than 4%, the mass dissolves and remains unbound.

The upper value of the flow rate of foamed polystyrene is accepted according to the conditions of obtaining a minimum

0 structure materna.pa, in which all the cops are connected into a strong conglomerate, without overspending of expensive polystyrene. A further increase in the consumption of foamed polystyrene is not advisable, because it is then carried out for {1 agent, (instead of pearlite), and not a binder. This increases the cost of the insulating material without significantly improving the insulating properties.

0

The flow rate of the fibrous component is selected from the condition of creating the optimal structure of the material, when the reinforcing component is evenly distributed in the volume of the mix does not increase the volumetric MJaccy and thermal conductivity coefficient, however, it increases the flexural strength. When the consumption of wood chips less than 2% (by weight) in the mixture of tensile strength

0 when bending significantly reduced. Increasing the fiber component consumption by more than 10% (by weight) results in a non-technological mixture that is difficult to mix, forges.

The resulting material can be used in construction for the production of fencing structures as a middle thermal insulation layer in sandwich panels and slabs

0 coatings of residential, public and industrial, as thermal insulation and sound insulation material.

The use of material from this mixture allows to reduce

This is due to the low coefficient of thermal conductivity, as a result of which the material consumption of the structures is reduced.

186,285,202,258

52.4 48.8 45.6 48.9

207-276

12.6-18.4

Table continuation

Claims (2)

RAW MATERIAL MIXTURE FOR THE PRODUCTION OF THERMAL INSULATION MATERIAL, including perlite sand, fiber component, from the group: asbestos, wood shavings and mineral wool, and a binder, characterized in that, in order to increase the bending and compression strength, as well as reduce the thermal conductivity of the material, it contains foamed polystyrene as a binder granule in the following quantitative ratios, May. %: Perlite sand 70.0-94.0 Fibrous component Polystyrene Foam Granules 2.0-10.0 4.0-20.0 m go about ka at this temperature for 30-40 minutes and cooling to room temperature. Example 1. 70, .0 wt.% Perlite sand (GOST 10832-74) is mixed with 20.0 wt.% Granules of foamed 5 polystyrene (VTU KHZ No. 38-60) and s. 10 wt.% Wood chips. Perlite sand is first wetted by spraying with water to a moisture content of 6% for better mixing with other components. Wood shavings are not specially subjected to any kind of technological processing, they are accepted as they are delivered from woodworking enterprises, such as waste from woodworking. A thoroughly mixed mixture of the components of the raw mix is placed in metal forms of cubes and jars and subjected to heat treatment in a 2Q dry air environment according to the regime: temperature rise to 80 ° C, holding at this temperature for 40 minutes. After cooling the samples of the raw material mixture to room temperature, they are subjected to 25 tests to determine the physicomechanical properties. Example 2. May 82.0.% Perlite sand (GOST 10832-74) is mixed with 12 wt.% Granules of expanded polystyrene (VTUKHZ No. 38-60) 30 _and s; May 6.% wood chips, Perlite sand is moistened before spraying with water up to 8% moisture for better adhesion to other * __ components. Wood shavings are used * from woodworking enterprises. The mixture of the components of the raw material mixture is thoroughly mixed, placed in metal cubes and the beams are subjected to heat treatment in dry air according to the following conditions: raising the temperature to 90 ° C, holding at this temperature for 35 minutes. After cooling the raw material samples