CN1811087A - Inner deposited and outer hung heat insulating coating for wall and its making process - Google Patents
Inner deposited and outer hung heat insulating coating for wall and its making process Download PDFInfo
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- CN1811087A CN1811087A CN 200610057309 CN200610057309A CN1811087A CN 1811087 A CN1811087 A CN 1811087A CN 200610057309 CN200610057309 CN 200610057309 CN 200610057309 A CN200610057309 A CN 200610057309A CN 1811087 A CN1811087 A CN 1811087A
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Abstract
The inner deposited and outer hung heat insulating coating for wall includes a moistureproof interface layer, a heat insulating board, a light protecting mortar layer with netted cloth and a surface decoration layer successively attached to the outer surface of the outer wall, and has heat insulating blocks and deposited foamed polyurethane layer between the heat insulating board and the outer wall. The making process includes the following steps: adhering heat insulating blocks to the wall; adhering the heat insulating board to the blocks to form cavity in between; depositing foamed polyurethane material to the cavity; smearing the light protecting mortar layer while sandwiching netted cloth; and forming the surface decoration layer. The present invention has raised heat insulating effect, strengthened heat insulating layer strength, high safety coefficient, saving in time and material.
Description
Technical field
The present invention relates to a kind of heat insulating coating for wall, particularly a kind of inner deposited and outer hung heat insulating coating for wall; The invention still further relates to a kind of preparation method of heat insulating coating for wall, particularly a kind of preparation method of inner deposited and outer hung heat insulating coating for wall.
Background technology
The reasonable insulation form of common effect in the existing wall thermal insulating industry, a kind of is bonding mortar paste heat-preserving plate thin plastering system, another kind is the thick plastoring system of spraying polyurethane.The thin plastoring system construction sequence of warming plate is: adhesive mortar is spread upon on the warming plate, then warming plate is bonded on the body of wall, anticracking grout is smeared at the plate face in bonding firm back, embeds grid cloth simultaneously and strengthen in mortar, does finish coat again on the anticracking grout surface.The thick plastoring system construction sequence of spraying polyurethane is; Handle metope earlier, brush interfacial agents, spraying polyurethane is being done one deck interfacial agents at the polyurethane foam laminar surface more then, uses the levelling of thick matter alignment material then, after the levelling, smears anticracking grout again, last finish coat construction.There is following problem in first kind of form: one, the coefficient of thermal conductivity of traditional mortar is generally greater than 0.9W/m.k, the heat insulation effect of system can only rely on warming plate self, mortar to the heat-insulating property of system almost without any contribution, indirect reduction the heat insulation effect of heat insulating coating.Two, because existing warming plate technology adopts bar to glue more or point is sticking, the insulation construction of this cavity way has reduced the anti-wind pressure of system; Simultaneously existing warming plate surface cooperates grid cloth to do the cracking resistance overcoat with mortar, and wherein selected mortar proportion is often greater than 1.8g/cm
3, this heat insulation system has increased the load of heat insulating coating self, so present warming plate system way exists the not high hidden danger of safety; Three, not long-time after the heat insulating coating completion, the stress that expands with heat and contract with cold that produces owing to the warming plate temperature influence, or the relatively poor plastering mortar of service property (quality), system surfaces plate seam position is prone to cracking, be easy to be subjected to the intrusion of rainwater, thereby reduced the heat insulation effect of system; Four, 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.Five, adhesive strength is low, when big or surface layer load is big when the negative blast in the external world, there is hidden danger in heat insulating coating, bonding mortar has certain requirement to the processing at warming plate interface simultaneously, this has just proposed higher requirement to the interface processing of warming plate, such as brushing interfacial agents, or polished in the surface, increased the program and the complexity of construction.Six, building external corner place adopts the metal corner protector, and it is perishable that the metal corner protector is influenced by alkaline environment, thereby causes the hollowing cracking of building external corner.The problem of second kind of form existence is: 1, raw-material waste.During outdoor spraying polyurethane, wind-engaging and temperature effect are bigger, and about 30% polyurethane material can be wasted.2, the poor flatness of the insulation layer after the spraying need be carried out levelling to the surface of insulation layer, can carry out the construction of next process, has so promptly increased the thickness of insulation layer, has increased the load of system, has increased the operation of construction again.
Summary of the invention
For overcoming defective of the prior art, the invention provides a kind of inner deposited and outer hung heat insulating coating for wall and preparation method thereof, when improving heat insulation effect, increase the intensity of heat insulating coating, improved safety factor, and improved the planeness of heat insulating coating, save the operation of levelling, the time and labour saving material-saving.
For achieving the above object, the invention provides a kind of inner deposited and outer hung heat insulating coating for wall, the moistureproof boundary layer, heat insulation formwork, lightweight protection mortar layer and the finish coat that comprise the external surface that is attached to outer body of wall successively, accompany grid cloth in the described lightweight protection mortar layer, be provided with the insulation cushion block between described heat insulation formwork and the outer body of wall, and described heat insulation formwork and outside be cast with the polyurethane foam layer in the default cavity between the body of wall.
Described insulation cushion block is a quadrangle, the length of side 〉=8cm.
Thickness≤the 3cm of described insulation cushion block.
Distance≤5cm between the inner surface of described heat insulation formwork and the outer body of wall.
Interval≤the 50cm of described insulation cushion block, and quadrate distributes.
Adopt between described insulation cushion block and the outer body of wall that the insulation epoxy mortar is bonding, adopt that polyurethane foam is gluing to be connect between insulation cushion block and the heat insulation formwork.
The present invention also provides the preparation method of inner deposited and outer hung heat insulating coating for wall, comprises following steps:
A, will be incubated cushion block and be adhered on the body of wall;
B, insulation cushion block and outer body of wall bonding firmly after, heat insulation formwork be adhered to be incubated on the cushion block, make between heat insulation formwork and the outer body of wall and form cavity;
C, heat insulation formwork and insulation cushion block bonding firmly after, cast polyurethane foamed material in cavity;
D, smear lightweight protection mortar layer at the heat insulation formwork skin, folder is established grid cloth simultaneously;
E, outside lightweight protection mortar layer, do finish coat.
In described a step, described insulation cushion block is provided with spacing≤50cm, and quadrate distributes.
In described a step, adopt the insulation epoxy mortar bonding, in described b step, adopt the gluing heat insulation formwork that connects of polyurethane foam.
In described c step, each floor height is built branch and is finished for 2～3 times, builds height≤30cm at every turn.
Described lightweight protection mortar in described d step is mixed by first component and the second component ratio according to 1: 1.5～1: 4.5, described first component contains the water of 400～800 weight portions, the water-loss reducer of 1～10 weight portion, the defoamer of the alkaline-resisting emulsion of 600～200 weight portions, the mould inhibitor of 0.5～3 weight portion, 0.2～2 weight portion; Described second component contains the cement of 100～500 weight portions, the waterproof agent of inorganic or organic anti-crack fiber of 20～120 order quartz sands of pearl, 300～850 weight portions, 3～20 weight portions, 0.3～3 weight portion, the cement antifreezing agent of 0.2～1 weight portion, the cement water reducing agent of 0.2～1 weight portion and the cement early strength agent of 0.2～1 weight portion are floated in 20～120 order vitreous of 50～200 weight portions.
Inner deposited and outer hung heat insulating coating for wall provided by the invention is a kind of heat insulating coating for wall with excellent heat insulation effect, aims to realize energy-conservation 80% target and design and develop.The present invention constitutes by building polyurethane foam layer, heat insulation formwork and lightweight protection mortar layer and finish coat.With insulation and all good polyurethane of cementability is bonding agent, substitutes traditional bonding mortar bonding and thermal insulation plate with the method for building, and can fundamentally solve bonding mortar coefficient of thermal conductivity height, the warming plate interface processing is had the problem of requirement.Heat insulation formwork is selected polystyrene thermal insulation plate or polyurethane thermal insulation board for use.This kind construction technology has fundamentally improved the heat insulation effect of coating, and has increased the safety factor of heat insulating coating.Press earlier the planeness paste heat-preserving cushion block of body of wall during construction, be incubated cushion block then and be pasted together with heat insulation formwork again, form certain cavity, carry out building of polyurethane foam layer again with the exterior wall body; Smear lightweight protection mortar layer at the heat insulation formwork external surface afterwards, the alkaline-resisting grid cloth of folder is done flexible waterproof putty and water-proof elastic primary coat at lightweight protection mortar laminar surface in the lightweight protection mortar layer, finish coat construction then.This system also has following many characteristics except that satisfying multiple building energy conservation requirement:
1, the insulation heat-insulating property is good.Common bonding mortar and plastering mortar since coefficient of thermal conductivity greater than 0.9W/m.k, so little to the contribution of the heat insulation effect of heat insulating coating.The present invention is selected build the polyurethane foam moulding after its coefficient of thermal conductivity less than 0.022W/m.k, lightweight protection mortar layer coefficient of thermal conductivity is less than 0.2W/m.k, the coefficient of thermal conductivity of these two kinds of materials is all far below the coefficient of thermal conductivity of common bonding and plastering mortar, so the present invention and conventional paste heat-preserving plate heat insulating coating are compared, greatly reduce the thermal transmittance of heat-preserving wall, promptly improved the heat insulation effect of heat-preserving wall.Can draw thus under identical energy conservation standard requires and conventional paste heat-preserving template is compared, the present invention can reduce the thickness of warming plate, has improved the economic benefit of engineering.Can satisfy simultaneously the requirement of China's building energy-saving 80% fully.
2, since the present invention adopt polyurethane LIFT and outer body of wall adhesive strength greater than 0.25MPa, the proportion of lightweight protection mortar layer is less than 0.7g/cm
3, with respect to common bonding and thermal insulation template system, under same thickness adhesive linkage and float coat situation, greatly reduce the deadweight of heat insulating coating, the heat insulating coating bulk strength is improved, and improved safety.
3, cracking resistance excellence.The first, because low many of the coefficient of thermal conductivity of the general mortar of thermal conductivity ratio of lightweight protection mortar layer, more approaching with the coefficient of thermal conductivity of heat insulation formwork, so the deformability and the heat insulation formwork of lightweight protection mortar layer are more approaching, are having under the situation of variations in temperature and can telescopic variation take place synchronously with heat insulation formwork; The second, lightweight protection mortar layer has the optimal balance point of hot strength and expansion and contraction, can digest release temperature and change the stress that is produced.
4, resisting wind press capacity is good.Build layer of polyurethane and build for no cavity, and the adhesive strength height, so Wind-Pressure Resistance is better.
5, the cementability of LIFT is strong.LIFT is except heat-insulating property is much better than common bonding mortar, its adhesive property also is better than common bonding mortar, the requirement of its surface layer load is greater than the surface layer load requirement of common bonding mortar heat insulating coating, and the surface layer of heat insulating coating can bear bigger load power.
6, the planeness of insulation layer surface is good, need not in the levelling of carrying out insulation layer surface, and labor and material saving, the while can also be reduced the thickness of heat insulating coating, increases building area.
7, with respect to spraying polyurethane, reduced the waste of material, in theory can 100% utilize raw material, also protected environment to avoid polluting when reducing waste.
8, adopt when strengthening way, heat insulating coating is more permanent service time.Better strengthen the alternative galvanized metal net of alkaline-resisting grid cloth with alkali resistance and in heat insulating coating, play booster action.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.Corrosion along with wire lath, wire lath and mortar can progressively break away from, thereby lose the system enhancement effect, strengthen alkaline-resisting grid cloth because the alkaline resistance properties excellence is difficult for suffering erosion under alkaline environment, so can the midium or long term play booster action in system, make heat insulating coating more permanent service time.
9, 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.
Description of drawings
Fig. 1 is the structural representation of inner deposited and outer hung heat insulating coating for wall of the present invention,
Fig. 2 is the flow chart of the preparation method of inner deposited and outer hung heat insulating coating for wall of the present invention.
The accompanying drawing sign
1, outer body of wall 2, moistureproof boundary layer 3, polyurethane foam layer
4, insulation cushion block 5, heat insulation formwork 6, lightweight protection mortar layer
7, grid cloth 8, finish coat 9, holder part
The specific embodiment
As shown in Figure 1, the invention provides a kind of inner deposited and outer hung heat insulating coating for wall, the moistureproof boundary layer 2, heat insulation formwork 5, lightweight protection mortar layer 6 and the finish coat 8 that comprise the external surface that is attached to outer body of wall 1 successively, and add nail holder part 9, accompany grid cloth 7 in the described lightweight protection mortar layer 6, be provided with insulation cushion block 4 between described heat insulation formwork 5 and the outer body of wall 1, and described heat insulation formwork 5 with outside be cast with polyurethane foam layer 3 in the cavity of formation between the body of wall 1.Described insulation cushion block is a square, the length of side 〉=8cm, thickness≤3cm.Interval≤the 50cm of described insulation cushion block, and quadrate distributes.Distance≤5cm between the inner surface of described heat insulation formwork and the outer body of wall.Adopt the insulation epoxy mortar bonding between described insulation cushion block and the outer body of wall, adopt between insulation cushion block and the heat insulation formwork that polyurethane foam is gluing to be connect.During the first floor, also accompany one deck grid cloth in the described lightweight protection mortar layer.
As shown in Figure 2, the present invention also provides the preparation method of inner deposited and outer hung heat insulating coating for wall, comprises following steps:
A, will be incubated cushion block and be adhered on the body of wall; Prepare the insulation cushion block, draw the THICKNESS CONTROL line according to the wall leveling degree, with being incubated the bonding cushion block of epoxy mortar adhesive agent, heat keeper interblock distance is not more than 50cm, and quadrate distributes according to thickness;
B, insulation cushion block and outer body of wall bonding firmly after, with polyurethane foam glue heat insulation formwork is bonded to and to be incubated on the cushion block, make between heat insulation formwork and the outer body of wall and form cavity; And the inner surface of assurance heat insulation formwork and the distance≤5cm between the outer body of wall;
C, heat insulation formwork and insulation cushion block bonding firmly after, cast polyurethane foaming pours in cavity; Earlier pours is preheating to 25 ℃～60 ℃ in the polyurethane casting machine, and casting machine pressure is adjusted to 0.4MPa～1.5MPa; Each floor height is built branch and is finished for 2～3 times, builds height≤30cm at every turn.
D, smear lightweight protection mortar layer at the heat insulation formwork skin, folder is established grid cloth simultaneously; Alkali resistant glass fibre open weave cloth is cut out in advance; At first smear the lightweight protection mortar, thickness 3～10mm, having smeared certain width should be pressed into alkali resistant glass fibre open weave cloth in the lightweight screed with trowel immediately, and wipe off, overlap joint is not less than 50mm between alkali resistant glass fibre open weave cloth, is pressed in proper order from a side direction opposite side, requires smooth corrugationless, the plumpness of protection mortar should reach 100%, forbids dried taking.Smear second layer lightweight protection mortar immediately, the about 2～5mm of thickness covers alkali resistant glass fibre open weave cloth;
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 external corner place.Each layer negative and positive angle, door and window bicker Application Grid cloth parcel strengthen.
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, smears second layer protection mortar more then.
Described lightweight protection mortar in described step is mixed by first component and the second component ratio according to 1: 1.5～1: 4.5, described first component contains the water of 400～800 weight portions, the water-loss reducer of 1～10 weight portion, the defoamer of the alkaline-resisting emulsion of 600～200 weight portions, the mould inhibitor of 0.5～3 weight portion, 0.2～2 weight portion; Described second component contains the cement of 100～500 weight portions, the waterproof agent of inorganic or organic anti-crack fiber of 20～120 order quartz sands of pearl, 300～850 weight portions, 3～20 weight portions, 0.3～3 weight portion, the cement antifreezing agent of 0.2～1 weight portion, the cement water reducing agent of 0.2～1 weight portion and the cement early strength agent of 0.2～1 weight portion are floated in 20～120 order vitreous of 50～200 weight portions.Can adopt following three kinds of concrete proportionings:
Embodiment 1: described lightweight plastering mortar is mixed by first component and the second component ratio according to 1: 1.5, and described first component contains the water of 400Kg, the water-loss reducer of 1Kg, the alkaline-resisting emulsion of 600Kg, the mould inhibitor of 3Kg and the defoamer of 2Kg; Described second component contains the cement of 500Kg, the waterproof agent of inorganic or organic anti-crack fiber of 20～120 order quartz sands of pearl, 450Kg, 20Kg, 3Kg, the cement antifreezing agent of 1Kg, the cement water reducing agent of 1Kg and the cement early strength agent of 1Kg are floated in 20～120 order vitreous of 50Kg.
Embodiment 2: described lightweight plastering mortar is mixed by first component and the second component ratio according to 1: 4.5, and described first component contains the water of 800Kg, the water-loss reducer of 10Kg, the alkaline-resisting emulsion of 200Kg, the mould inhibitor of 0.5Kg and the defoamer of 0.2Kg; Described second component contains the cement of 100Kg, the waterproof agent of inorganic or organic anti-crack fiber of 20～120 order quartz sands of pearl, 700Kg, 3Kg, 0.3Kg, the cement antifreezing agent of 0.2Kg, the cement water reducing agent of 0.2Kg and the cement early strength agent of 0.2Kg are floated in 20～120 order vitreous of 200Kg.
Embodiment 3: described lightweight plastering mortar is mixed by first component and the second component ratio according to 1: 3, and described first component contains the water of 600Kg, the water-loss reducer of 5Kg, the alkaline-resisting emulsion of 400Kg, the mould inhibitor of 1.5Kg and the defoamer of 1Kg; Described second component contains the cement of 300Kg, the waterproof agent of inorganic or organic anti-crack fiber of 20～120 order quartz sands of pearl, 580Kg, 10Kg, 1.5Kg, the cement antifreezing agent of 0.6Kg, the cement water reducing agent of 0.6Kg and the cement early strength agent of 0.6Kg are floated in 20～120 order vitreous of 120Kg.
E, outside lightweight protection mortar layer, do finish coat.
After lightweight protection mortar layer drying, common way is for scraping flexible waterproof putty, the primary coat of brush water-proof elastic, coating application.Reinforced way is a binding face tile.
The construction tool that adopts is polyurethane casting machine, Electric portable drill, floater commonly used and the special detection tool of plastering, transit and unwrapping wire instrument, big thick stick chi, bucket, scissors, round brush, spade, broom, hand hammer, wallpaper cutter, cable inlet bracket, square chi, guiding ruler, clearance gauge, probe, steel ruler etc.Hanging basket or special-purpose construction scaffolding.
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.
2, according to the requirement of building masonry wall thermal transmittance, calculate the thickness of building polyurethane foam layer and heat insulation formwork, draw vertical, horizontal breadth line.The first floor should add nail holder part.
3, according to relative contour insulation epoxy bonding mortar bonding and thermal insulation cushion block, concordant with relative contour for guaranteeing insulation cushion block top, can realize by regulating the bonding thickness that is incubated epoxy mortar.Wherein being incubated the cushion block length of side should be less than 8cm, and thickness should not surpass 3cm, and the insulation cushion block should be prefabricated with polyurathamc sheet material or expansion polyphenyl sheet material in advance.The heat keeper block gap should not answer quadrate to distribute greater than 50cm.It should be noted and wait to be incubated that cushion block and outer body of wall are bonding can carry out the bonding of heat insulation formwork after firm.
4, heat insulation formwork is fixing: heat insulation formwork is connected on the insulation cushion block with polyurethane foam is gluing, and heat insulation formwork inner surface and body of wall not be apart from should surpassing 5cm, the heat insulation formwork arrangement that should misplace, and should fix from the bottom up.Be noted that in that heat insulation formwork and insulation cushion block are bonding and can carry out the construction of polyurethane LIFT after firmly.Whenever fixedly one deck has carried out a polyurethane and has built.
5, build the construction of polyurethane foam layer
1) LIFT should be selected for use and build type hard polyurethane foams pouring material.
2) pouring material is joined in the polyurethane casting machine, and be preheating to 25 ℃～60 ℃, casting machine pressure is adjusted to and is 0.4MPa～1.5MPa.When building, the casting machine discharging opening should stretch in the cavity of heat insulation formwork and outer body of wall, with the even speed move left and right, and carries gradually.
Should successively build by heat insulation formwork when 3) building, each construction floor height is built branch and is finished for 2～3 times, the height of foaming is advisable to be no more than 30cm when building at every turn, after every layer of levelling heat insulation formwork built and finished, should guarantee that the height of foaming layer is no more than the upper edge of levelling heat insulation formwork.
Need two people to cooperate when 4) building, a people builds, and the big thick stick chi of a human withstands the heat insulation formwork facade, in case the expansion force of heat insulation formwork when being foamed bloats.
6, do the lattice lines
(1), according to the elevation of building situation, lattice seam is answered layering setting, the monolateral length≤15m of piecemeal area.
(2), the position of on heat insulation formwork, ejecting frame bar and drip by designing requirement.
(3), leave the groove of setting along the good frame bar of bullet with the wallpaper cutter.
(4), lightweight protection mortar layer is expired in embedding in groove, and drip is embedded in the groove, and is firm with lightweight protection mortar layer bonding, with the floating crops for rotation of this material.
(5), lattice seam width should not should adopt the construction of in-place forming method less than 5cm.Specific practice is to hold the lattice slot on heat insulation formwork successfully, and size is than the wide 10mm of designing requirement, dark 5mm.
7, lightweight overcoat construction
Alkali resistant glass fibre open weave cloth is pressed the floor gap size and is cut out in advance, at first smear the lightweight protection mortar, thickness 3～10mm, having smeared certain width should be pressed into alkali resistant glass fibre open weave cloth in the lightweight protection mortar with trowel immediately, and wipes off, and overlap joint is not less than 50mm between alkali resistant glass fibre open weave cloth, be pressed in proper order from a side direction opposite side, require smooth corrugationless, the plumpness of special-purpose adhesive mortar should reach 100%, forbids dried taking.Smear second layer lightweight protection mortar immediately, the about 2～5mm of thickness covers alkali resistant glass fibre open weave cloth.The building first floor is answered the double-deck alkali resistant glass fibre open weave cloth of paving, and first floor is answered the reinforced alkali resistant glass fibre open weave cloth of paving, but should note the appropriate to the occasion butt joint of paving reinforcement alkali resistant glass fibre open weave cloth, with the paving construction that can carry out common alkali resistant glass fibre open weave cloth.The full protection mortar material of embedding is answered at lattice seam place, and the alkali resistant glass fibre open weave cloth overlapping part should design at lattice seam place.Building first floor exterior wall external corner should add dedicated modified Plastic protective corner between double-deck alkali resistant glass fibre open weave cloth, the corner protector height should be no less than 2m.Strengthen alkali resistant glass fibre open weave cloth construction back at first pass and add, all the other each layer negative and positive angles, door and window bicker are used double-deck alkali resistant glass fibre open weave cloth parcel and are strengthened, and the monolateral length of cornerite alkali resistant glass fibre open weave cloth should be less than 20cm.Adopt during furring brick and strengthen way, substitute common alkali resistant glass fibre open weave cloth with strengthening alkali resistant glass fibre open weave cloth, it should be noted that and after having spread grid cloth, answered dry 24 hours, with the fixing alkali resistant glass fibre open weave cloth of strengthening of anchoring piece, smear second layer lightweight protection mortar more then.
8, finish coat construction
After lightweight protection mortar layer drying, common way is for scraping flexible waterproof putty, the primary coat of brush water-proof elastic, coating application.Reinforced way is a binding face tile.
The moistureproof interfacial agents that adopts among the present invention, its main performance index 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 present invention adopts builds the polyurethane foam material and should adopt the product that meets following requirement: cream time: 5～15s; Gel time: 25～50s; Hardening time: 60～180s;
Building polyurethane foam layer main performance index sees the following form:
| Project | Index |
| Density/(kgm -3) | ≥35 |
| Coefficient of thermal conductivity/W (mK) -1 | ≤0.022 |
| Compressive strength/kPa | ≥150 |
| Tensile strength/kPa | ≥250 |
| Water absorption rate/% | ≤1 |
| Dimensional stability | ≤1 |
| Adaptive temperature/℃ | -50-150 |
| Anti-flammability (oxygen index (OI)) | ≥26 |
Heat insulation formwork among the present invention and insulation cushion block adopt standard compliant polyphenyl sheet material or polyurethane plate.
Lightweight protection mortar among the present invention is the special-purpose assorted material of a kind of high performance compound external wall energy-saving system, and is nontoxic, harmless, is Green Product, is applicable to the bonding of grid cloth in the heat insulation system.Its main performance index sees the following form:
| Project | Index | |
| Density | ≤0.7g/cm 3 | |
| Coefficient of thermal conductivity | ≤0.2W/m.K | |
| Stretching adhesive strength (with heat insulation formwork) | Former intensity | 〉=0.1MPa destroys the interface on heat insulation formwork |
| Water-fast | 〉=0.1MPa destroys the interface on heat insulation formwork | |
| Freeze-thawing resistant | 〉=0.1MPa destroys the interface on the levelling heat insulation formwork | |
| Pliability | Backfin is than (cement based) | ≤3.0 |
| Cracking strain (non-cement based) | ≥1.5 | |
| Operable time | 1.5～4.0h | |
Its advantage is:
1, proportion, coefficient of thermal conductivity have reduced the load of system to body of wall far below common bonding 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 insulating coating.
4, nontoxic, harmless, free from extraneous odour.
Modified plastics corner protector among the present invention 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).
Glass fiber reticular cloth main performance index among the present invention sees the following form:
| Project | Unit | Index | |
| Mesh center to center distance | Plain edition | mm | 5×5 |
| Reinforced | 10×10 | ||
| Weight per unit area | Plain edition | g/m2 | ≥180 |
| Reinforced | ≥500 | ||
| Ultimate strength (warp, broadwise) | Plain edition | N/50mm | ≥1250 |
| Reinforced | ≥3000 | ||
| Alkaline-resisting strength retention (warp, broadwise) | ％ | ≥90 | |
| Elongation at break | ％ | ≤5 | |
| The plastic-coated amount | g/m2 | ≥20 | |
Holder part among the present invention should adopt the product that meets following requirement: load 700N, maximum permanent set amount is measured in duration 5min unloading behind the 3min, and the permanent set amount is not more than 2.0mm.
Anchoring piece among the present invention 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.Plastic anchor is fastened effective anchorage depth and is not less than 25mm, and the plastic disc diameter is not less than 50mm, cover external diameter of pipe 7～10mm.The individual plastic anchor is fastened tension standard value of bearing capacity (C25 concrete base layer) and is not less than 0.80KN.
Claims (10)
1, a kind of inner deposited and outer hung heat insulating coating for wall, the moistureproof boundary layer, heat insulation formwork, lightweight protection mortar layer and the finish coat that comprise the external surface that is attached to outer body of wall successively, accompany grid cloth in the described lightweight protection mortar layer, it is characterized in that, be provided with the insulation cushion block between described heat insulation formwork and the outer body of wall, and described heat insulation formwork and outside be cast with the polyurethane foam layer in the cavity that forms between the body of wall.
2, inner deposited and outer hung heat insulating coating for wall according to claim 1 is characterized in that described insulation cushion block is a quadrangle, the length of side 〉=8cm.
3, inner deposited and outer hung heat insulating coating for wall according to claim 1 is characterized in that the thickness≤3cm of described insulation cushion block.
4, inner deposited and outer hung heat insulating coating for wall according to claim 1 is characterized in that the distance≤5cm between the inner surface of described heat insulation formwork and the outer body of wall.
5, as inner deposited and outer hung heat insulating coating for wall as described in each in the claim 1 to 4, it is characterized in that, the interval≤50cm of described insulation cushion block, and quadrate distributes.
6, inner deposited and outer hung heat insulating coating for wall according to claim 1 is characterized in that, adopts between described insulation cushion block and the outer body of wall that the insulation epoxy mortar is bonding, adopts that polyurethane foam is gluing to be connect between insulation cushion block and the heat insulation formwork.
7, a kind of making method of inner deposited and outer hung heat insulating coating for wall according to claim 1 comprises following steps:
A, will be incubated cushion block and be adhered on the body of wall;
B, insulation cushion block and outer body of wall bonding firmly after, heat insulation formwork be adhered to be incubated on the cushion block, make between heat insulation formwork and the outer body of wall and form cavity;
C, heat insulation formwork and insulation cushion block bonding firmly after, cast polyurethane foamed material in cavity;
D, smear lightweight protection mortar layer at the heat insulation formwork skin, folder is established grid cloth simultaneously;
E, outside lightweight protection mortar layer, do finish coat.
8, as process as described in the claim 7, it is characterized in that, in described a step, adopt the insulation epoxy mortar bonding, in the b step, adopt the gluing heat insulation formwork that connects of polyurethane foam.
As process as described in the claim 7, it is characterized in that 9, in described c step, each construction floor height is built branch and finished for 2～3 times, builds height≤30cm at every turn.
10, as process as described in the claim 7, it is characterized in that, described lightweight protection mortar in described d step is mixed by first component and the second component ratio according to 1: 1.5～1: 4.5, described first component contains the water of 400～800 weight portions, the water-loss reducer of 1～10 weight portion, the defoamer of the alkaline-resisting emulsion of 600～200 weight portions, the mould inhibitor of 0.5～3 weight portion, 0.2～2 weight portion; Described second component contains the cement of 100～500 weight portions, the waterproof agent of inorganic or organic anti-crack fiber of 20～120 order quartz sands of pearl, 300～850 weight portions, 3～20 weight portions, 0.3～3 weight portion, the cement antifreezing agent of 0.2～1 weight portion, the cement water reducing agent of 0.2～1 weight portion and the cement early strength agent of 0.2～1 weight portion are floated in 20～120 order vitreous of 50～200 weight portions.
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| CNB200610057309XA CN100406655C (en) | 2006-03-08 | 2006-03-08 | Inner deposited and outer hung heat insulating coating for wall and its making process |
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| CNB200610057309XA CN100406655C (en) | 2006-03-08 | 2006-03-08 | Inner deposited and outer hung heat insulating coating for wall and its making process |
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| CN1811087A true CN1811087A (en) | 2006-08-02 |
| CN100406655C CN100406655C (en) | 2008-07-30 |
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