CN100443683C - Full water foamed and sprayed polyurethane external heat insulation system - Google Patents
Full water foamed and sprayed polyurethane external heat insulation system Download PDFInfo
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- CN100443683C CN100443683C CNB2006100835834A CN200610083583A CN100443683C CN 100443683 C CN100443683 C CN 100443683C CN B2006100835834 A CNB2006100835834 A CN B2006100835834A CN 200610083583 A CN200610083583 A CN 200610083583A CN 100443683 C CN100443683 C CN 100443683C
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Abstract
The present invention relates to a full water foamed and sprayed polyurethane outer thermal insulation system which comprises a moistureproof interface layer, a polyurethane thermal insulation layer, an interface layer, a light-weight protective mortar layer and a flexible putty layer which are orderly covered on the surface of an outer wall, wherein grid cloth is sandwiched in the light-weight protective mortar layer; a convex corner of the outer wall, which is covered with the full water foamed and sprayed polyurethane outer thermal insulation system, is provided with a corner guard; the polyurethane thermal insulation layer uses water as a foaming agent; since the polyurethane thermal insulation layer uses water as the foaming agent, the polyurethane thermal insulation layer before and after forming completely avoids the damaging effect on the atmospheric ozone layer when freon is used as the foaming agent. Thus, the present invention is a green environmental-protection material and enhances the thermal insulation performance.
Description
Technical field
The present invention relates to a kind of insulating system of external wall, be particularly related to a kind of full water foamed and sprayed polyurethane external heat insulation system, adopt the blowing agent of water, avoided of the destruction of freon class blowing agent, and good heat insulation effect is provided atmospheric ozone layer as polyurethane insulation coating.
Background technology
Mostly existing building masonry wall is loam brick and concrete, and the heat preservation and energy conservation effects of this class body of wall is poor, and building energy conservation will reach 80% index, must adopt the little heat insulating material of coefficient of thermal conductivity.Because its coefficient of thermal conductivity of polyurethane insulation coating is low, in wall thermal insulating, obtained increasing application, palette class polyurethane is had relatively high expectations to body of wall, and is connected with fixture with cementing agent between sheet material and the body of wall, constructs loaded down with trivial details and efficient is not high.During the sheet material large-area construction, piece is many, and thermal conductance is big, and energy consumption is big, and heat insulation effect is relatively poor, and application life is short.
The conventional urethane industry uses halogenated fluorocarbons, particularly F-11 (CFC211) with ozone layer destroying effect to foam, and along with the enhancing of people's environmental consciousness, freon will be eliminated gradually as blowing agent.In hard polyurethane foam, CFC211 alternative commonly used has: (1), alkanes just mainly contain, different, pentamethylene etc., the advantage of hydrocarbon blowing agents is the depletion of the ozone layer problem not to take place, shortcoming is inflammable, and its explosion hazard becomes the subject matter that the foaming system process units faces.(2), the HCFC class, the depletion of the ozone layer problem also can take place in this class alternative, and costs an arm and a leg.(3), need to adopt when strengthening the insulation way for highly surpassing 30m, furring brick etc., often adopt paving galvanized metal net to strengthen heat insulating coating, the weak point of this way is: the galvanized metal net is under the alkaline environment of cement, easily be corroded, galvanized metal net and mortar break away from gradually, and lose due booster action.(4), building external corner place adopts the metal corner protector, it is perishable that the metal corner protector is influenced by alkaline environment, thereby cause the hollowing cracking of building external corner.(5), the construction level is many, construction is complicated.(6), now the grid cloth aperture is smaller in the heat insulation system, generally adopts 4mm * 4mm, is easy to form one deck separation layer when being used for protection mortar, influences the tensile strength of entire system.(7) though, present various wall insulation system toppings adopt the anticracking material of a variety of forms, in temperature significantly changes, cracking phenomena still often occurs, this cracking mainly appears on crack-resistant layer and the flexible putty layer.(8), for the summer in most of area, even if body of wall has been done insulation, when extraneous temperature fluctuation was big, interior temperature also can and then fluctuate, and increased the energy consumption of air-conditioning, also influenced indoor temperature comfortableness simultaneously.
Summary of the invention
In order to overcome the defective of prior art, the invention provides a kind of full water foamed and sprayed polyurethane external heat insulation system, adopt the blowing agent of water as polyurethane insulation coating, avoided destruction fully, and improved heat insulation effect atmospheric ozone layer.
A kind of full water foamed and sprayed polyurethane external heat insulation system that the present invention adopts, comprise the moistureproof boundary layer, polyurethane insulation coating, boundary layer, lightweight protection mortar layer and the flexible putty layer that are covered in outer surface of wall successively, accompany grid cloth in the described lightweight protection mortar layer, the external corner that is coated with the outer body of wall of full water foamed and sprayed polyurethane external heat insulation system is provided with corner protector, and described polyurethane insulation coating is adopted and used water as blowing agent.
As preferred version of the present invention, the material of described polyurethane insulation coating contains the polyethers of 100 parts of weight ratios, the foam stabiliser of 1～3 part of weight ratio, the composite foamed catalyzer of 1～3 part of weight ratio, the plural gel catalyzer of 1～3 part of weight ratio, the water of 1～5 part of weight ratio.
As a kind of improvement of the present invention, the center to center distance of the mesh of described grid cloth is 5mm * 5mm.
As preferred version of the present invention, when the heat-insulation system surface when adopting face brick etc. to strengthen way, described grid cloth is for strengthening alkaline-resisting grid cloth.
As a kind of improvement of the present invention, the center to center distance of the alkaline-resisting grid cloth mesh of described reinforcement is 10mm * 10mm.
As a kind of improvement of the present invention, described corner protector is a Plastic protective corner.
As a kind of improvement of the present invention, add energy storage materials of phase change in described lightweight protection mortar layer and/or the flexible putty layer.
As preferred version of the present invention, described energy storage materials of phase change selects for use the mixture of the mixture of acid of hard ester and the positive butyl ester of hard ester acid or acid of soft ester and the positive butyl ester of hard ester acid as phase-change material, active carbon, hollow glass micropearl and expanded perlite are selected a kind of as clad material of polymer cement, epoxy resin, silicones or polymer latex Ruzhong for use as matrix material.
This full water foamed and sprayed polyurethane external heat insulation system is by basic unit's body of wall processing layer, polyurethane insulation coating and flexible putty layer, lightweight protection mortar leveling layer, grid cloth back-up coat, finish coat.Basic unit's body of wall processing layer is selected boundary mortar for use.The lightweight protection mortar is made up of efficient phase changing energy storing material, the compound organic resin of organic-inorganic light material, inorganic binder, special fibre, organosilicon moisture repellent and other auxiliary agent.Back-up coat adopts common alkaline-resisting grid cloth.Brush interface treating agent during construction earlier, the spraying polyurethane insulation layer is brushed the interface overcoat then then, smears the levelling of lightweight protection mortar, and alkaline-resisting grid cloth is pressed into the lightweight protection mortar, scrapes flexible putty on the surface of grid cloth, finish coat construction then.
Full water foamed and sprayed polyurethane external heat insulation system of the present invention is compared with existing outer heat preservation system, and insulation and heat-insulating property is good, simple in structure, waterproof, fire prevention is not ftractureed, and caking property is good.This heat-insulation system also has following many characteristics except that satisfying multiple building energy conservation requirement:
1, polyurethane insulation coating is adopted and is used water as blowing agent, so the later polyurethane insulation coating of moulding to the destruction of atmospheric ozone layer, is a kind of heat insulating material of environmental protection during the freon class blowing agent of having avoided fully adopting.And full water foamed foam preparation technology is easy, and is very low to the requirement of equipment, can continue to use the equipment of CFC211 system, has vast market prospect.
2, good heat insulating.Insulation layer density 35～40kg/m that hard polyurethane foams constitutes
3The time, its coefficient of thermal conductivity is 0.025W/ (m.K), and the polystyrene foam plate coefficient of thermal conductivity is 0.05W/ (m.K), and the cement perlite coefficient of thermal conductivity is 0.1W/ (m.K).
3, good waterproof performance.Because its abscess of hard polyaminoester insulation layer seals, and rate of closed hole has good impermeability about 95%.Adopt hard polyurethane foams to make the insulation waterproof, one-shot forming, there is not joint, the receipts head structure is simple, do not need special processing, adopt the interface protective agent further to handle to the polyurethane after the foaming, improved the heat insulation effect of polyurethane on the one hand, further improved the adhesion stress of polyurathamc and lightweight protection mortar layer simultaneously.
4, adopt when strengthening way, heat-insulation system is more permanent service time.Because the galvanized metal net easily corrodes under the alkaline environment of cement, when especially adopting wire lath off quality, this phenomenon is inevitable especially.Along with the corrosion of wire lath, wire lath and mortar can progressively break away from, thereby lose the system enhancement effect, better strengthen the alternative galvanized metal net of alkaline-resisting grid cloth with alkali resistance and play booster action in heat insulating coating.Owing to strengthen the alkaline resistance properties excellence of alkaline-resisting grid cloth, under alkaline environment, be difficult for suffering erosion, so can the midium or long term play booster action, make heat-insulation system more permanent service time in system.
5, at building external corner place, replace the metal corner protector with the modified plastics corner protector, avoided the metal corner protector to corrode the hollowing cracking in the corner of causing.
6, the mesh center to center distance of common grid cloth adopts 5mm * 5mm size, the mesh center to center distance of strengthening grid cloth adopts 10mm * 10mm size, avoided the small-bore grid of present use to form separation layer easily in protection mortar, the phenomenon that influences the entire system pull strength occurs.
7, more traditional construction technology is saved one deck plastering mortar, simplifies construction technology, reduces construction cost, shortens the engineering time.
8, the crack resistance of body of wall and the comfortableness of interior temperature have been improved.Because in lightweight protection mortar layer and flexible putty layer, add the efficient phase changing energy storing material, so when ambient temperature changes significantly, the transformation of energy storage materials of phase change in overcoat and the flexible putty layer by mutually absorbs or emits heat energy, thereby reduced the variations in temperature of wall thermal insulating insulation system.Because variations in temperature causes wall thermal insulating insulation system cracking easily, and the expansion shrinkage factor of polyurethane heat-insulation layer material and overcoat, flexible putty layer expansion shrinkage factor differ bigger, the easier cracking that causes system's skin-material of this nonsynchronous convergent-divergent.So when the body of wall variations in temperature was little, wall thermal insulating insulation system cracking behavior can reduce greatly.Simultaneously also can reduce fluctuations in indoor temperature, improve the comfortableness of interior temperature.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The accompanying drawing sign
1, outer body of wall 2, moistureproof boundary layer 3, polyurethane insulation coating 4, boundary layer
5, lightweight protection mortar layer 6, grid cloth 7, flexible putty layer
The specific embodiment
Below the present invention will be described in detail.
As shown in Figure 1, the essential structure of full water foamed and sprayed polyurethane external heat insulation system of the present invention is as follows: outer body of wall 1 is made of concrete, small-size concrete hollow block, hollow brick, non-clay brick, clinker brick etc.; Be covered in moistureproof boundary layer 2, polyurethane insulation coating 3, boundary layer 4, lightweight protection mortar layer 5 and the flexible putty layer 7 on outer body of wall 1 surface successively, accompany grid cloth 6 in the described lightweight protection mortar layer, the external corner that is coated with the outer body of wall of full water foamed and sprayed polyurethane external heat insulation system is provided with corner protector, described polyurethane insulation coating is full water foamed polyurethane heat insulation material, promptly use water as blowing agent, with the CO of water and isocyanate reaction generation
2Gas is made blowing agent, and its ozone layer destroying effect ODP value is zero, have no side effect, so water is the most attractive final alternative of CFC211.The material of described polyurethane insulation coating contains the polyethers of 100 parts of weight ratios, the foam stabiliser of 1～3 part of weight ratio, the composite foamed catalyzer of 1～3 part of weight ratio, the plural gel catalyzer of 1～3 part of weight ratio, the water of 1～5 part of weight ratio.Can adopt following concrete proportioning:
The polyethers of one: 100 part of weight ratio of example, the foam stabiliser of 1.0 parts of weight ratios, the composite foamed catalyzer of 1.2 parts of weight ratios, the plural gel catalyzer of 1.8 parts of weight ratios, the water of 1.5 parts of weight ratios.
The polyethers of two: 100 parts of weight ratios of example, the foam stabiliser of 2.0 parts of weight ratios, the composite foamed catalyzer of 3.0 parts of weight ratios, the plural gel catalyzer of 1.0 parts of weight ratios, the water of 2.0 parts of weight ratios.
The polyethers of three: 100 parts of weight ratios of example, the foam stabiliser of 3.0 parts of weight ratios, the composite foamed catalyzer of 2.5 parts of weight ratios, the plural gel catalyzer of 3.0 parts of weight ratios, the water of 4.5 parts of weight ratios.
An alternative embodiment of the invention, on the basis of the foregoing description, described grid cloth adopts strengthens alkaline-resisting grid cloth, to increase the corrosion resistance of grid cloth, plays better booster action.The mesh center to center distance of described grid cloth is elected 10mm * 10mm as, to improve whole tensile strength.
An alternative embodiment of the invention, on the basis of first embodiment, described corner protector adopts Plastic protective corner to replace metal corner protector of the prior art, to strengthen its corrosion resistance.
An alternative embodiment of the invention on the basis of first embodiment, is added energy storage materials of phase change in described lightweight protection mortar layer and/or the flexible putty layer.Described energy storage materials of phase change preferably adopts the mixture of the mixture of acid of hard ester and the positive butyl ester of hard ester acid or acid of soft ester and the positive butyl ester of hard ester acid as phase-change material, active carbon, hollow glass micropearl and expanded perlite are selected a kind of as clad material of polymer cement, epoxy resin, silicones or polymer latex Ruzhong for use as matrix material.
Scheme 1: with the n-octadecane acid of certain proportion cooperation, the mixture of butyl stearate (concrete ratio, hard ester acid: butyl stearate changes in the 20%-80% scope) (actual temp 75-100 ℃) fusion at a certain temperature, matrix material is poured into, pour out after stirring.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 4-8 hour and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Instantiation 1:
N-octadecane acid, (the hard ester acid: butyl stearate=1: 4), matrix material is poured into, poured out after stirring of the mixture of butyl stearate 75 ℃ of fusions.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 4 hours and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Instantiation 2:
N-octadecane acid, (the hard ester acid: butyl stearate=1: 1), matrix material is poured into, poured out after stirring of the mixture of butyl stearate 90 ℃ of fusions.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 6 hours and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Instantiation 3:
N-octadecane acid, (the hard ester acid: butyl stearate=4: 1), matrix material is poured into, poured out after stirring of the mixture of butyl stearate 100 ℃ of fusions.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 8 hours and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Scheme 2: with the hexadecane acid of certain proportion cooperation, the mixture of butyl stearate (concrete ratio, soft ester acid: butyl stearate changes in the 20%-80% scope) (65 ℃-90 ℃ of actual temps) fusion at a certain temperature, matrix material is poured into, pour out after stirring.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 4-8 hour and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Instantiation 1:
Hexadecane acid, (the soft ester acid: butyl stearate=1: 4), matrix material is poured into, poured out after stirring of the mixture of butyl stearate 65 ℃ of fusions.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 4 hours and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Instantiation 2:
Hexadecane acid, (the soft ester acid: butyl stearate=1: 1), matrix material is poured into, poured out after stirring of the mixture of butyl stearate 80 ℃ of fusions.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 6 hours and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Instantiation 3:
Hexadecane acid, (the soft ester acid: butyl stearate=4: 1), matrix material is poured into, poured out after stirring of the mixture of butyl stearate 90 ℃ of fusions.Then finely dispersed phase transformation particle is immersed in polymeric compositions (epoxy glue, polyurethane adhesive, the vinyl acetate glue etc.) slurries, fully soaks after 8 hours and take out.Be placed on room temperature environment and sieved after the polymer film forming drying in following 24 hours, thereby make evengranular phase change composite material.
Full water foamed and sprayed polyurethane external heat insulation system construction technology of the present invention is as follows:
The construction of polyurethane insulation coating: at first, preparation mixes the polyurethane foam raw material; Then, adopt high pressure airless spray equipment, polyurethane foam material is painted on the body of wall of handling with interface treating agent, generally adopt the mode of two to three times sprayings, each THICKNESS CONTROL is about 10-15mm.Be controlled at 3-15S hardening time.At last, treat the hard polyurethane foam bone dry after, at polyurethane surface brush interface protective agent, with the further levelling of lightweight protection mortar.
The construction of lightweight protection mortar layer: at first, grid cloth is pressed the floor gap vertical dimension and is cut out in advance; Then, smearing lightweight protection mortar thickness 3～15mm earlier is used for levelling is carried out on the spraying polyurethane surface, having smeared certain width should be pressed into grid cloth in the lightweight screed with trowel immediately, and wipe off, overlap joint is not less than 50mm between grid cloth, is pressed in proper order from a side direction opposite side, requires smooth corrugationless, the plumpness of light phase transition accumulation of energy protection mortar should reach 100%, forbids dried taking.
Flexible putty layer construction: after treating lightweight protection mortar drying, scrape the about 1～2mm of flexible putty thickness on the grid cloth surface, require grid cloth is covered fully.
The finish coat construction: after flexible putty layer drying, common way is: brush water-proof elastic priming paint, coating ornamental surface.Way is strengthened in employing during furring brick, substitutes common alkali resistant glass fibre open weave cloth with strengthening alkali resistant glass fibre open weave cloth, it should be noted that and answers after having spread grid cloth dry 24 hours, with the fixing alkali resistant glass fibre open weave cloth of strengthening of anchoring piece, scrapes flexible putty more then.
Construction precautions
One, execution conditions
1. after the building main body was checked and accepted, the outer door and window of exterior wall was checked and accepted and is finished, and basic unit reaches the requirement of " Standard for quality inspection and assessment of buiding construction ".
2. construction should be adopted climbing scaffold, hanging basket, and except that designing requirement, body of wall does not answer reserving hole that scaffold is set, and removes the foreign material that other is an impediment to construction.
3. construction of basic unit's body of wall and door and window mouth and check finish, and the fire ladder on the exterior wall, leader, various house-service pipeline, burglary-resisting window built-in fitting etc. are answered installation in position.
4. continuous 5 days mean daily temperatures of job site environment temperature and basic unit's surface of wall temperature should not be lower than 5 ℃, and wind-force is not more than 5 grades.During winter construction, should adopt corresponding safeguard measure, the rainy day should stop construction or adopt an effective measure, and prevents the rain drop erosion metope.
5. when constructing, should avoid exposure in sunshine, can on construction scaffolding, set up sun-proof cloth in case of necessity, block the construction metope.
6. walling system is in work progress, should adopt necessary safeguard measure, and the metope that prevents to construct is polluted and damage, wait to build structural features by designing requirement construct finish after, can remove the protection thing.
Two, construction tool
1. high-pressure airless foaming machine, forced action type transverse axis mortar mixer, vertical transportation machinery, horizontal transport vehicle, hand mixer, Electric portable drill etc.
2. floater commonly used and the special detection tool of plastering, transit and unwrapping wire instrument, bucket, scissors, round brush, spade, broom, hand hammer, wallpaper cutter, cable inlet bracket, square chi, guiding ruler, clearance gauge, probe, steel ruler etc.
3. hanging basket or special-purpose construction scaffolding.
Three, construction point
1, basic unit's metope is handled: metope should be cleaned out oil stain, floating dust etc.Old metope is loosening, the weathering position should be rejected totally, and protrusion should be evened out greater than 5mm.The excessive hard polyurethane foam fragility that easily makes of body of wall water content increases, and influences the caking property of hard polyurethane foam and body surface when serious, therefore brushes interface treating agent before construction, and the rainy day generally forbids to construct.
2, hang vertical, cover side, look for rule, play the THICKNESS CONTROL line, draw vertically, level leads to line.
3, the construction of spraying polyurethane insulation layer:
Polyurethane raw material A with preparing after the B accurate measurement, delivers to spray gun by Material pipeline, mixes, and adopts high pressure airless spraying apparatus to be sprayed directly on the body of wall of handling well.The polyisocyanates that the A component adopts can be 4,4-methyl diphenylene diisocyanate, polymethylene multi-phenenyl isocyanate, or aliphatic polyisocyante.The B component is the PPG by different hydroxyl values, chain extender, and blowing agent is formed.The more suitable temperature range of spraying polyurethane foaming should be 10 ℃-35 ℃, and the temperature of surface of wall is very big to construction infection, must strictness controls construction temperature well.Adopt the method for gradation spraying, each coating thickness is controlled at about 10～15mm, generally sprays two to three times.Angle of gun should be controlled at 70 degree-90 degree, and spray gun remains on 0.8-1.5m with quilt spray thing spacing and is advisable.
4, treat the hard polyurethane foam bone dry after, just can brush the interface protective agent behind about 0.5h at polyurethane surface.Brushing does not the latest surpass 4h.Can carry out the plastering process construction after the 24h final set.
5, lightweight protection mortar construction
Grid cloth is pressed the floor gap size and is cut out in advance, and it is thick to smear heat-insulating light protection mortar 3～15mm, and vertical immediately paving grid cloth is pressed into grid cloth with trowel.The grid cloth lap width should be less than 50mm, and overlap cements with the lightweight protection mortar, is pressed into a side earlier and smears the lightweight protection mortar, is pressed into opposite side again, and it is smooth non-wrinkled that the grid cloth paving is wanted.
The double-deck alkali resistant glass fibre open weave cloth of first floor paving.First floor is reinforced alkali resistant glass fibre open weave cloth, adopts the mode paving dock between net and the net; The second layer is common alkali resistant glass fibre open weave cloth, adopts the mode paving of overlap joint between net and the net.The lightweight protection mortar should be full between the two-grid cloth, forbids dry doubling, and add the modified plastics corner protector between the two-grid cloth at first floor external corner place.Each layer negative and positive angle, door and window bicker Application Grid cloth parcel strengthen.
6, flexible putty layer construction
After treating lightweight protection mortar drying, scrape flexible putty on the grid cloth surface, the about 1～2mm of thickness requires grid cloth is covered fully.
7, finish coat construction
After flexible putty layer drying, common way is: brush interface treating agent, coating ornamental surface; Way is strengthened in employing during furring brick, substitutes common alkali resistant glass fibre open weave cloth with strengthening alkali resistant glass fibre open weave cloth, it should be noted that and answers after having spread grid cloth dry 24 hours, with the fixing alkali resistant glass fibre open weave cloth of strengthening of anchoring piece, scrapes flexible putty more then.
The performance of the major product that the present invention adopts is as follows:
The main performance index of moistureproof interfacial agents sees the following form:
| Project | Index |
| Condition in container | The milky liquid state, free from admixture |
| Application property | The brushing twice are accessible |
| Drying time (surface drying)/h≤ | 4 |
| Appearance of film | Normally |
| Water resistance | 168h is no abnormal |
| Alkali resistance | 48h is no abnormal |
| Coating temperature-change resistance (five circulations) | No abnormal |
The performance indications of full water foamed hard ester polyurethane heat insulating material are: density: 35-40kg/m
3Compressive strength 〉=250kPa; Tensile strength 〉=150kPa; Water absorption rate≤3%; Coefficient of thermal conductivity≤0.025W/ (mK); Linear dimension rate of change: 80 ℃ of 24h≤3%;-25 ℃ of 24h≤3%; Average burning time≤90s; Average combustion range≤50mm; Combustibility adopts horizontal firing method determination of test method.GB/T 10800-89 " the heat insulation RPUF of using of building ".
The main performance index of boundary layer sees the following form:
| Project | Index |
| Condition in container | The milky liquid state, free from admixture |
| Application property | The brushing twice are accessible |
| Drying time (surface drying)/h≤ | 4 |
| Appearance of film | Normally |
| Tensile strength, MPa 〉= | 0.6 |
| Water resistance | 168h is no abnormal |
| Alkali resistance | 48h is no abnormal |
| Coating temperature-change resistance (five circulations) | No abnormal |
The lightweight protection mortar adopts materials such as import redispersible polymer rubber powder, high-quality low alkali cement, inorganic filler and efficient phase changing energy storing material to make through special process, it is the special-purpose assorted material of a kind of high performance compound external wall energy-saving system, nontoxic, harmless, be Green Product.Main performance index sees the following form:
The scope of application: the bonding that is applicable to grid cloth in the heat insulation system.
Advantage:
1, proportion, coefficient of thermal conductivity have reduced the load of system to body of wall far below common adhesive mortar, the safety that has improved system, and the while has also been improved the heat insulation effect of entire system.
2, anti-cracking performance is good, and the adhesion strength height does not ftracture, uses for a long time and do not peel off.
3, the optimal balance point that has hot strength and expansion and contraction, the effective stress that release temperature changes and deformation of wall is produced, thus guaranteed the overall performance of heat-insulation system.
4, add the efficient phase changing energy storing material, reduce fluctuations in indoor temperature, improve the crack resistance of material simultaneously.
5, nontoxic, harmless, free from extraneous odour.
Flexible putty adopts the materials such as high molecular polymer rubber powder, high-quality low alkali cement, organosilicon moisture repellent and efficient phase changing energy storing material of water repelling property excellence to make through special process, it is the special-purpose assorted material of a kind of high performance compound external wall energy-saving system, nontoxic, harmless, be Green Product.
Predominant use: be mainly used in the water resistance and the further outer field cracking behavior of improvement system that improve heat insulation system.
Technical indicator such as following table:
Advantage:
1, classification of waterproof height effectively reduces rain penetration to the heat preservation slurry Effect on Performance.
2, adhesion strength height, long-term use is not peeled off, is not ftractureed.
3, the optimal balance point that has hot strength and expansion and contraction, the further stress that release temperature changes and deformation of wall is produced, thus guaranteed the overall performance of heat insulation system.
4, add the efficient phase changing energy storing material, reduce fluctuations in indoor temperature, improve the crack resistance of material simultaneously.
5, nontoxic, harmless, free from extraneous odour.
The grid cloth main performance index sees the following form:
Anchoring piece should adopt the product that meets following requirement: plastic anchor is fastened by plastic expansion sleeve pipe two parts of screw and band disk and is formed.Metallic screw is used stainless steel or is made through the metal that surface anticorrosive is handled, the plastic expansion sleeve pipe of continuously connected fastener and band disk should adopt polyamide, polyethylene or polypropylene to make, and the material of making continuously connected fastener and plastic bushing must not use the regrown material of recovery.The effective anchorage depth of plastics crab-bolt is not less than 25mm, and the plastic disc diameter is not less than 50mm, cover external diameter of pipe 7-10mm.Individual plastic crab-bolt tension standard value of bearing capacity (C25 concrete base layer) is not less than 0.80KN.
The modified plastics corner protector should adopt the product that meets following requirement: heat-resisting (50 ± 2 ℃ indeformable), cold-resistant (〉=-35 ℃ indeformable), tension (1000 newton are indeformable), the shock resistance (quality of dropping hammer 1KG, tup radius 30mm, during shock height 20cm, sample is not destroyed).
Claims (7)
1, a kind of full water foamed and sprayed polyurethane external heat insulation system, comprise the moistureproof boundary layer that is covered in outer surface of wall successively, polyurethane insulation coating, boundary layer, lightweight protection mortar layer and flexible putty layer, accompany grid cloth in the described lightweight protection mortar layer, the external corner that is coated with the outer body of wall of full water foamed and sprayed polyurethane external heat insulation system is provided with corner protector, it is characterized in that, described polyurethane insulation coating contains: the polyethers of 100 parts of weight ratios, the foam stabiliser of 1～3 part of weight ratio, the composite foamed catalyzer of 1～3 part of weight ratio, the plural gel catalyzer of 1～3 part of weight ratio and the water as blowing agent of 1～5 part of weight ratio.
2, full water foamed and sprayed polyurethane external heat insulation system according to claim 1 is characterized in that the center to center distance of the mesh of described grid cloth is 5mm * 5mm.
3, full water foamed and sprayed polyurethane external heat insulation system according to claim 1 is characterized in that, described grid cloth is for strengthening alkaline-resisting grid cloth.
4, as full water foamed and sprayed polyurethane external heat insulation system as described in the claim 3, it is characterized in that the center to center distance of the alkaline-resisting grid cloth mesh of described reinforcement is 10mm * 10mm.
5, full water foamed and sprayed polyurethane external heat insulation system according to claim 1 is characterized in that described corner protector is a Plastic protective corner.
6, full water foamed and sprayed polyurethane external heat insulation system according to claim 1 is characterized in that, adds energy storage materials of phase change in described lightweight protection mortar layer and/or the flexible putty layer.
7, as full water foamed and sprayed polyurethane external heat insulation system as described in the claim 6, it is characterized in that, described energy storage materials of phase change selects for use the mixture of the mixture of acid of hard ester and the positive butyl ester of hard ester acid or acid of soft ester and the positive butyl ester of hard ester acid as phase-change material, active carbon, hollow glass micropearl and expanded perlite are selected a kind of as clad material of polymer cement, epoxy resin, silicones or polymer latex Ruzhong for use as matrix material.
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| CNB2006100835834A CN100443683C (en) | 2006-06-09 | 2006-06-09 | Full water foamed and sprayed polyurethane external heat insulation system |
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| CNB2006100835834A CN100443683C (en) | 2006-06-09 | 2006-06-09 | Full water foamed and sprayed polyurethane external heat insulation system |
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| CN1858376A CN1858376A (en) | 2006-11-08 |
| CN100443683C true CN100443683C (en) | 2008-12-17 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581119B (en) * | 2009-03-27 | 2011-08-31 | 张亚兵 | Outer-wall heat insulating material and outer wall heat insulating method |
| CN102504520B (en) * | 2011-09-28 | 2015-11-25 | 兰州理工大学 | Straw/bromine carbon polyurethane flame-retardant composite heat-insulation material and preparation method thereof |
| CN102979277A (en) * | 2012-11-23 | 2013-03-20 | 苏州科信遮阳新材料科技有限公司 | Self-adhesive polyurethane hard-foam composite panel |
| US10478972B2 (en) | 2013-05-23 | 2019-11-19 | Q-Bot Limited | Method of covering a surface of a building and robot therefor |
| CN114809358A (en) * | 2022-04-25 | 2022-07-29 | 上海师范大学 | Phase change energy storage concrete wall for heat preservation and insulation |
| CN115849944B (en) * | 2022-12-21 | 2023-08-11 | 江苏恒尚节能科技股份有限公司 | Aerated concrete block for building curtain wall and preparation method thereof |
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| CN1858376A (en) | 2006-11-08 |
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