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A method of manufacturing a heat-insulating material

A method of manufacturing a heat-insulating material
IPC classes for russian patent A method of manufacturing a heat-insulating material (RU 2140937):
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(57) Abstract:

The invention relates to the field of building materials, in particular to a method for heat-insulating material used for thermal insulation of building structures and products, refrigeration, cabs and cars, railway cars and subway cars, ships, as well as the packing material for industrial and household equipment. The method includes the preparation of the molding Promesse by wind mixing of the liquid composition on the basis of urea-formaldehyde resin with the addition of the modifier and water and liquid composition on the basis of hardener in the presence of compressed air before the formation of stable foam. Followed by forming products, isothermal exposure for 0.5 - 1.5 h at 10 - 35oWith and rastormojka finished products. The technical result is an increase in strength of the finished products with reduced content of free formaldehyde. 4 C.p. f-crystals, 3 tables.

The invention relates to the field of building materials, in particular to a method for insulating material, multi-purpose, used for thermal insulation of building design is a Hilbert equipment.

Known composition for insulating material comprising (wt. %): urea-formaldehyde resin 40,3-60,7, acid curing agent 4-10, filler 18-28, surfactant 0,3-0,7, urea 12-14 and sodium silicate 5-7. A disadvantage of the known compositions is the relatively high water absorption of the finished products and the high content of harmful impurities [1].

A known method of manufacturing insulation products on the basis of (wt. %): urea-formaldehyde resin 21-50, ammonium chloride of 0.2-0.6, semi-aquatic phosphogypsum 10-16, polystyrene granules to 10.8-14.4V, sulphite lye 9-14, perlite 15-19 and water - the rest, including the process of preparing foams from aqueous foaming solution of NP-1 in a high-speed mixer with sequential introduction of foam polystyrene granules, urea-formaldehyde resins, ammonium chloride, semi-aquatic phosphogypsum, sulfate liquor, water, protOgO sand. The disadvantage of this method is the relatively low strength of the finished products and the high content of free formaldehyde.

An object of the invention is to increase the strength of the finished products and a reduction in the content Svobodnoye material, includes the preparation of the molding promessi, product molding, insulated shutter speed and rastormojka finished products, and the preparation of the molding promessi carried by wind mixing of two liquid compositions 1 and 2 in their mass ratio equal to 1: (0.3 to 1.5) in the presence of compressed air at a gauge pressure of 0-0,6 MPa for 1.5-5.5 sec at t = 10-30oC before the formation of stable foam density 15-75 kg/m3with subsequent forced mechanical agitation of the foam until a homogeneous heterogeneous molding promessi for 1.5-7.5 C, which is placed in a mold and subjected to isothermal aging for 0.5-1.5 hours at a temperature of 10-35oC to achieve the Stripping strength liquid composition 1 prepared on the basis karbomidoformaldegidnogo resin with the addition of the modifier and water in the following ratio of components, wt. %:
Urea-formaldehyde resin - 83,5-98,5
Modifier - 0,05-8,75
Water - the Rest
and as a modifier use urea or polyvinyl alcohol molecular weight 4500-6500 with the content of hydroxyl groups of 30-40% by weight or carboxymethyl cellulose molecular weight 70000-85000 content Hydra the polymers based on the monomers styrene, or vinyl chloride, vinylidenechloride, vinyl acetate, methylacetate, methyl methacrylate, Acrylonitrile, vinylaryl, or the aqueous dispersion of copolymers based on them, or sodium salt of sulfonated condensation products of naphthalene or of styrene, or of phenol with formaldehyde or sodium salt of sulfonated condensation products of waste products of naphthalene or of styrene, or of phenol with formaldehyde, a liquid composition 2 is prepared on the basis of the curing agent, foaming agent, detoxifier and water when the following ratio, wt%:
Hardener - 1,2-5,8
The blowing agent is 1,1-8,9
The detoxifier - 0,3-4,7
Water - the Rest
after the formation of a stable foam density 15-75 kg/m3add mineral or organic filler, hardener use phosphoric acid or oxalic acid, or boric acid, or formic acid, or potassium or sodium salt or a double or triple mixture at a mass ratio of 1:(0.5 to 1) or 1:(0,5-1): (0,5-1) respectively, or ammonium hydroxide and its salts, and as a foaming agent a mixture of sodium or triethylamine salts alkylene acid fraction C10-C16and sodium or triteleia ratio of 1: (0.5 to 1.5), or neutralized cleaned the contact Petrov, or pasta DS-RAS, or a mixture triethanolamine salts of alkyl sulphates fraction C10-C13or a mixture of persulfate alcohols cracking of distillates fractions 140-180 and 240-320oC, or a mixture of veracierto sodium, or dimethylethylbenzene ammonium chloride, or double or triple mixture at a mass ratio of 1:(0.5 to 1.5), and as detoxicants use urea, or hydrochloric acid hydroxylamine, or polyvinyl alcohol, or carboximetilzellulozu, or a binary or ternary mixture at a mass ratio of 1:1 or 1:1:1, as a mineral filler use fine or porous granular materials on the basis of: silica or ash waste incineration plants or ash wastes of metallurgical industries, or expanded clay, or plaster or silicate of potassium or sodium, or marble, or granite, or carbon black, or rock excavation; and as the organic filler used waste or polymer crumb fraction of 0.01-5 mm, or granules of polymers: polystyrene, or polyethylene, or polyvinyl chloride, or polyvinylidenechloride, or polyvinyl acetate, or polacrilin 1: (0,5-1,5): (0,5-1,5) accordingly, or a mixture of mineral and organic filler at a ratio of 1: (1-9) body parts, mineral or organic filler, or a dry mix is injected into the formed stable initiated foam with a foaming magnification of 3.5-55,5 at a volume ratio of mineral filler:foam, equal to 1:(5-10) and an organic filler: foam, equal to 1:(0,8-1,2) and continuous mixing of the molding promessi when the Reynolds number 2500-15000 with a feed rate of 0.0005-0,0085 volumetric parts filler to one volume part foam in a second.

The proposed method allows to obtain clean teploizoljatsionnye material with improved strength characteristics. Released in a moment of spontaneous catalytic polymerization of harmful impurities immediately enter into chemical interaction with the special detoxicate and neutralized in the body material to form a solid, non-volatile compounds, firmly held by the polymer matrix, which makes the material which is environmentally friendly in residential and socio-cultural construction.

In the work we used the following source materials: urea-formaldehyde resin KF-0.14 GOST 14231-78, binder M-3 on THE other 6-06-tification Fock-M on THE other 2601-156-00284807-96, technical carbon WUT-17-10-11-95, water according to GOST 249202-81, potassium liquid glass on THE 6-18-204-74, sodium liquid glass according to GOST 13078-81, foaming-1 according to GOST 66948-80, 6K on THE 38.10740-82, TEAS on THE 38.107127, OVER THE 38.10923-75, binder VK-1 on THE other 6-06-0803396-8890, alkyldimethylbenzylammonium chloride on THE 9392-001041383450-96, modifier C-3 on THE other 6-36-0204229-625-90, polystyrene filler on THE 5612-161-00284807-96, ash and slag waste incineration plant # 3 (, Moscow), gypsum, clay dust, urea according to GOST 2081-92, fiberglass on TC 21-23-12-110-96.

The results of the practical implementation of the proposed technical solutions are given in table. 1-3. As follows from the data table. 3, the application of the proposed technical solutions (examples 2-7) allow to obtain environmentally friendly thermal insulation material with high physical-mechanical indicators. At a constant density of the finished material, its strength increased by about four times (example 3) compared with the known strength of the material (example 1). The level of water absorption decreased three times (examples 1 and 3, respectively). The application of the proposed technical solutions outside the stated conditions do not lead to the desired results (examples 8-9). the of insulating material, including the preparation of the molding promessi, product molding, insulated shutter speed and rastormojka finished products, characterized in that the preparation of the molding promessi carried by wind mixing of two liquid compositions 1 and 2 in their mass ratio of 1 : (0.3 to 1.5) in the presence of compressed air at a gauge pressure 0 to 0.6 MPa for 1.5 to 5.5 with 10 - 30oSince before the formation of stable foam density 15 - 75 kg/m3with subsequent forced mechanical agitation of the foam until a homogeneous heterogeneous molding promessi for 1.5 - 7.5 C, which is placed in a mold and subjected to isothermal aging for 0.5 - 1.5 h at 10 - 35oTo achieve the Stripping strength liquid composition 1 prepared on the basis karbomidoformaldegidnogo resin with the addition of the modifier and water in the following ratio, wt.%:
Urea-formaldehyde resin - 83,5 - 98,5
Modifier - 0,05 - 8,75
Water - the Rest
and as a modifier use urea or polyvinyl alcohol mol. m 4500 - 6500 with the content of hydroxyl groups of 30 to 40% by weight, or carboxymethylcellulose mol. m 70000 - 85000 content of hydroxyl groups of 7 - ove monomers of styrene or vinyl chloride, vinylidenechloride, vinyl acetate, methyl acrylate, methyl methacrylate, Acrylonitrile, vinylaryl, or the aqueous dispersion of copolymers based on them, or sodium salt of sulfonated condensation products of naphthalene or of styrene, or of phenol with formaldehyde or sodium salt of sulfonated condensation products of waste products of naphthalene or of styrene, or of phenol with formaldehyde, a liquid composition 2 is prepared on the basis of the curing agent, foaming agent, detoxifier and water when the following ratio, wt.%:
Hardener - 1,2 - 5,8
The blowing agent is 1,1 - 8,9
The detoxifier - 0,3 - 4,7
Water - the Rest
2. A method of manufacturing a heat-insulating material under item 1, characterized in that after the formation of a stable foam density 15 - 75 kg/m3add mineral or organic filler.

3. A method of manufacturing a heat-insulating material under item 1, characterized in that the hardener used phosphoric, or oxalic acid, or boron, or formic acid, or potassium or sodium salt, or double or triple mixture at a mass ratio of 1 : (0.5 to 1) or 1 : (0,5 - 1) : (0,5 - 1) respectively, or ammonium hydroxide and its salts, and as -C16and sodium or triethylamine salts, sulfates of monoethanolamide synthetic fatty acid fraction C15-C16when the mass ratio of 1 : (0.5 to 1.5), or neutralized cleaned the contact Petrov, or pasta DS-RAS, or a mixture triethanolamine salts of alkyl sulphates fraction C10-C13or a mixture of second-sulfates of alcohols cracking of distillates fraction 140 - 180 and 240 - 320oWith, or a mixture of second-alkyl sulphates of sodium, or dimethylethylbenzene ammonium chloride, or double or triple mixture at a mass ratio of 1 : (0.5 to 1.5), and as detoxicants use urea, or hydrochloric acid hydroxylamine, or polyvinyl alcohol or carboxymethylcellulose, or a binary or ternary mixture at a mass ratio of 1 : 1 or 1 : 1 : 1.

4. A method of manufacturing a heat-insulating material on PP.1 to 3, characterized in that the mineral filler used fine or porous bulk materials based on silica, or ash waste incineration plants, or ash wastes of metallurgical industries, or clay, or plaster, or silicate of potassium or sodium, or marble, or granite, or carbon black, or rocks Gornyy crumb fraction of 0.01 - 5 mm, or granules of foamed polymers, polystyrene, or polyethylene, or polyvinyl chloride, or polyvinylidenechloride, or polyvinyl acetate, or polyacrylonitrile, polyurethane or fractions of 0.01 - 10 μm, or a binary or ternary mixture at a mass ratio of 1 : (0.5 to 1.5) or 1 : (0,5 - 1,5) : (0,5 - 1,5) respectively, or a mixture of mineral and organic fillers at a ratio 1 : (1 - 9). h

5. A method of manufacturing a heat-insulating material on PP.2 to 4, characterized in that the mineral or organic filler, or a dry mix is injected into the formed stable initiated foam with a foaming magnification of 3.5 - 55,5 at a volume ratio of mineral filler : foam 1 : (5 - 10) and an organic filler : foam 1 : (0,8 - 1,2) and continuous mixing of the molding promessi when the Reynolds number 2500 - 15000 with a feed rate of 0.0005 - 0,0085 about. including filler to about 1. PM on the second.

 

 

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