CN104746794A - Preparation method of prefabricated concrete heat-preservation element based on polyurethane - Google Patents
Preparation method of prefabricated concrete heat-preservation element based on polyurethane Download PDFInfo
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- CN104746794A CN104746794A CN201310756919.9A CN201310756919A CN104746794A CN 104746794 A CN104746794 A CN 104746794A CN 201310756919 A CN201310756919 A CN 201310756919A CN 104746794 A CN104746794 A CN 104746794A
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- polyurethane
- unhardened
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- reaction system
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0015—Machines or methods for applying the material to surfaces to form a permanent layer thereon on multilayered articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/003—Machines or methods for applying the material to surfaces to form a permanent layer thereon to insulating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0046—Machines or methods for applying the material to surfaces to form a permanent layer thereon to plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/06—Making multilayered articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/10—Building elements, e.g. bricks, blocks, tiles, panels, posts, beams
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a preparation method of a prefabricated concrete heat-preservation element based on polyurethane. The prefabricated concrete heat-preservation element based on the polyurethane comprises a substrate layer, a core layer and an optional surface layer. The preparation method comprises the following steps: (I) providing the unhardened substrate layer, and preparing the unhardened substrate layer by unhardened concrete; (II) forming the core layer on the unhardened substrate layer; applying a first polyurethane reaction system to the unhardened substrate layer by the core layer and curing the first polyurethane reaction system to form polyurethane hard foam to be used as the core layer; (III) optionally applying the hardened or unhardened concrete to the core layer; and (IV) hardening the unhardened concrete to form the substrate layer and the optional surface layer.
Description
Technical field
The present invention relates to the preparation method of the precast concrete warm keeping element based on polyurethane, being specifically related to by using the first polyurethane system with the method for preparation based on the precast concrete warm keeping element of polyurethane on unhardened concrete.The invention still further relates to the precast concrete warm keeping element based on polyurethane comprising basalis, sandwich layer and optional surface layer, particularly comprise the precast concrete warm keeping element based on polyurethane of basalis, separation layer, sandwich layer and optional surface layer.
Background technology
Precast concrete heat preservation member is the heat preserving mode that current industrialization assembly concrete building adopts usually, and this technology is connected two-layer concrete panel by insulation tension member, centre accompanies the wallboard of efficient and light weight polyurethane heat insulation material.There is load-bearing, go along with sb. to guard him, be incubated, heat insulation, sound insulation, the function such as decoration.Interior layer concrete is deck, and skin is decorative layer, can make different patterns, as clear-water concrete, colour concrete, decorating surface brick, stone facing etc. according to different architectural styles.
EP1010828B1 discloses a kind of preparation method of the precast concrete heat preservation member based on polyurethane, wherein carry out first time maintenance after first fluid concrete basalis/or surface layer, at surface layer/or basalis upper polyurethane reaction System forming insulation layer after slaking, buckle on the unhardened layer of concrete of the second layer by the upset of gained element after the solidification of polyurethane reaction system, maintenance obtains required warm keeping element again.
Another kind of preparation uses green concrete based on the method for the precast concrete heat preservation member of polyurethane in a mold for first, then on shaping basalis, paving polyurethane sheet is spelled, finally on polyurethane thermal insulation board, use unhardened concrete, after maintenance, obtain prefabricated polyurethane thermal insulation board.In the method, polyurethane sheet needs the shape first being cut into into needs by artificial mode of cutting, the time-consuming effort of cutting process, and spells paving rear easily formation plate seam on the base layer, affects heat insulation effect.
Therefore a kind of preparation method of the precast concrete warm keeping element based on polyurethane of high-efficiency and low-cost is still needed.
Summary of the invention
One aspect of the present invention provides a kind of preparation method of the prefabricated precast concrete warm keeping element based on polyurethane, and the described precast concrete warm keeping element based on polyurethane comprises basalis, sandwich layer and optional surface layer, and described preparation method comprises:
I) provide unhardened basalis, described unhardened basalis is by unhardened concrete preparation;
II) on described unhardened basalis, form described sandwich layer, described sandwich layer, by using the first polyurethane reaction system on described unhardened basalis, forms hard polyurethane foam to be used as described sandwich layer after described first polyurethane reaction system solidification;
III) on described sandwich layer, concrete that is unhardened or sclerosis is optionally used; And
IV) make described unhardened concrete sclerosis to form described basalis and described optional surface layer.
In an embodiment of the invention, the thickness of described sandwich layer is 20-100mm.
In an embodiment of the invention, described method also comprises: V) on described unhardened basalis, first form separation layer, the step of described sandwich layer is formed again on described separation layer, wherein said separation layer, by using the second polyurethane reaction system on described unhardened basalis, forms described separation layer after described second polyurethane reaction system solidification.Preferably, the gel time of wherein said second polyurethane reaction system is less than 20 seconds.Preferably, hard polyurethane foam, soft polyurethane foam or polyurethane elastomer is formed after described second polyurethane reaction system solidification.Preferably, the thickness of described separation layer is 1-20mm.Preferably, the density of described separation layer is 15-1000kg/m
3.
The present invention provides a kind of precast concrete warm keeping element based on polyurethane on the other hand, comprising:
A) basalis, described basalis is prepared by concrete;
B) sandwich layer, described sandwich layer is prepared by hard polyurethane foam; And
C) optional surface layer, described surface layer is by hardening or the preparation of unhardened concrete.
In an embodiment of the invention, the thickness of described sandwich layer is 20-100mm.
In an embodiment of the invention, the described precast concrete warm keeping element based on polyurethane also comprises: c) separation layer, described separation layer is arranged between described basalis and described sandwich layer, and contacts with described basalis, and described separation layer is by the second polyurethane reaction system preparation.Preferably, the gel time of wherein said second polyurethane reaction system is less than 20 seconds.Preferably, hard polyurethane foam, soft polyurethane foam or polyurethane elastomer is formed after described second polyurethane reaction system solidification.Preferably, the thickness of described separation layer is 1-20mm.Preferably, the density of described separation layer is 15-1000kg/m
3.
Detailed description of the invention
The invention provides a kind of preparation method of the precast concrete warm keeping element based on polyurethane of high-efficiency and low-cost, the described precast concrete warm keeping element based on polyurethane comprises basalis, sandwich layer and optional surface layer, and described preparation method comprises:
I) provide unhardened basalis, described unhardened basalis is prepared by unhardened concrete;
II) on described unhardened basalis, form described sandwich layer, described sandwich layer, by using the first polyurethane reaction system on described unhardened basalis, forms hard polyurethane foam to be used as described sandwich layer after described first polyurethane reaction system solidification;
III) on described sandwich layer, sclerosis or unhardened concrete is optionally used; And
IV) make described unhardened hardening of concrete to form described basalis and described optional surface layer.
The method is by before basalis sclerosis, use (such as spraying or cast) first polyurethane reaction system thereon, after the first polyurethane reaction system solidify to form sandwich layer, on sandwich layer, optionally use the concrete for the formation of the unhardened of surface layer or sclerosis, then gained element is carried out maintenance to obtain the precast concrete warm keeping element based on polyurethane.Method of the present invention only needs a curing step, and avoids the cutting step of polyurethane sheet, improves the production efficiency based on the precast concrete warm keeping element of polyurethane and reduces cost of production.
As used in this application, term " concrete " has implication conventional in this area, it refers to the composition comprising inorganic bond material (such as cement), inserts (as gravel, sand), water and optional additive and/or auxiliary agent, wherein cement has the conventional implication in this area, and it refers to the dried powder prepared by components such as calcined limestone, silica, alumina, lime, iron oxide, magnesia and clays.Term " concrete " also comprises " mortar " conventional in this area, " concrete " and " mortar " involved in the present invention, and its composition difference is only that the maximum particle size of obtained described composition inserts used is different.Term " mortar " refers to by the obtained composition of the inserts of maximum particle size 4mm at the most, and term " concrete " refers to by the obtained composition of thicker inserts.In the present invention, term " concrete " and " mortar " are not further distinguished.
As used in this application, term " unhardened concrete " refers to before formation fundamental strength, namely the concrete before final set, wherein said final setting time can measure according to GB/T50080-2002 (" Standard for test methods of properties of ordinary concrete mixture standard ", 4th chapter, " mensuration time of setting ").
In an embodiment of the present invention, unhardened basalis is formed by being layed on mould by unhardened concrete, and it makes unhardened hardening of concrete and forms the basalis of sclerosis after maintenance.
In an embodiment of the present invention, after green concrete is layed in mould forms unhardened basalis, described unhardened basalis forms sandwich layer, described sandwich layer, by using the first polyurethane reaction system on described unhardened basalis, forms hard polyurethane foam to be used as described sandwich layer after described first polyurethane reaction system solidification.Wherein the first polyurethane reaction system can be the system being usually used in preparing hard polyurethane foam in this area, and in the preferred embodiment of the invention, the first polyurethane reaction system comprises:
1a) one or more polyisocyanates, described polyisocyanates can use general formula R (NCO)
nrepresent, wherein R represents the aliphatic alkyl containing 2-18 carbon atom or the aryl containing 6-15 carbon atom or contains 8-15 carbon atom aryl aliphatic hydrocarbyl, n=2-4; Preferred MDI and TDI performed polymer, monomer mixture; More preferably preferred MDI performed polymer, monomer mixture;
1b) one or more polyalcohols, the mean molecule quantity of described polyalcohol is 100-10000, and degree of functionality is 2-8; Preferably, described polyalcohol is selected from following one or more: with sucrose, glycerine, sorbierite or diethanol amine be initiator PPG, PEPA based on phthalic anhydride; With
1c) one or more blowing agents of 0.3-15wt.%, in 1b) weight by 100wt.%
1d) one or more catalyzer of 0-2wt.%, in 1b) and 1c) weight by 100wt.%.
Described first polyurethane reaction system can also comprise the auxiliary agent be usually used in this area, such as fire retardant, crosslinking agent, chain extender etc.
Described first polyurethane reaction system is applied on described unhardened basalis and can adopts method as known in the art, such as, spray and pour into a mould.According to the demand of reality, multilayer can use the first polyurethane reaction system, the thickness of the sandwich layer of preparation can be 20-100mm.
In preferred embodiments more of the present invention, before the first polyurethane reaction system is applied to unhardened basalis, first on described unhardened basalis, use the second polyurethane reaction system to form one or more layers hard polyurethane foam, soft polyurethane foam or polyurethane elastomer material, thus formation separation layer, on described separation layer, then use above-mentioned first polyurethane reaction system to form sandwich layer.Wherein said second polyurethane reaction system can be the system being usually used in preparing hard polyurethane foam, soft polyurethane foam or polyurethane elastomer in this area.Owing to containing more moisture and alkaline matter in the concrete for sclerosis, these materials can react with the first polyurethane reaction system, thus affect the performance of hard polyurethane foam.Separation layer can avoid the first polyurethane system to contact with unhardened concrete, thus avoids the performance damaging hard polyurethane foam.
In the present invention's preferred embodiment, described second polyurethane reaction system comprises:
2a) one or more polyisocyanates, described polyisocyanates can use general formula R (NCO)
nrepresent, wherein R represents the aliphatic alkyl containing 2-18 carbon atom or the aryl containing 6-15 carbon atom or contains 8-15 carbon atom aryl aliphatic hydrocarbyl, n=2-4; Preferred MDI and TDI performed polymer, monomer mixture; More preferably preferred MDI performed polymer, monomer mixture;
2b) polyalcohol and/or amine terminated polyether, described polyalcohol is selected from following one or more: PPG, PEPA, polycarbonate polyol, polycaprolactone polyol, polytetrahydrofuran polyol, the molecular weight of described polyalcohol and amine terminated polyether is greater than 100-8000, and degree of functionality is 2-6;
2c) one or more blowing agents of 0-15wt.%, in 2b) weight by 100wt.%; With
2d) one or more catalyzer of 0-2wt.%, in 2b) and 2c) weight by 100wt.%;
Described first polyurethane reaction system can also comprise the auxiliary agent be usually used in this area, such as fire retardant, crosslinking agent, chain extender etc.
In the preferred embodiment of the invention, the gel time of the second polyurethane reaction system is less than 40 seconds, is more preferably less than 20 seconds, is most preferably less than 10 seconds.The polyurethane reaction system reactivity with shorter gel time is higher, the moisture therefore in unhardened concrete and alkaline matter also less on its impact.
Hard polyurethane foam, soft polyurethane foam or polyurethane elastomer material can be formed after second polyurethane reaction system solidification, thus form separation layer.The thickness of separation layer can be 1-20mm.The density forming the hard polyurethane foam of separation layer, soft polyurethane foam or polyurethane elastomer material is 15-1000kg/m
3, be preferably 20-200kg/m
3, most preferably be 25-100kg/m
3.
Second polyurethane system can be applied on described unhardened basalis by the mode that this area is conventional, such as spraying or cast.
In an embodiment of the invention, on the sandwich layer formed, optionally use concrete that is unhardened or sclerosis, described unhardened concrete forms surface layer in maintenance after-hardening.The unhardened concrete be somebody's turn to do for the formation of surface layer can be identical or different with the unhardened concrete forming basalis.
In an embodiment of the present invention, method conventional in this area can be adopted to make described unhardened concrete sclerosis, such as, in this area, be usually used in the method for concrete curing.The maintenance process that this area is commonly used has natural curing, stream curing, dry hydrothermal curing, steam press maintenance, electrothermal hardening, infrared ray curing and solar energy curing etc.In an embodiment of the invention, by the assembly of above-mentioned gained temperature be 20 ± 3 DEG C, humidity be not less than the condition of 90% under maintenance until concrete reaches required intensity, obtain the described precast concrete warm keeping element based on polyurethane.
The present invention also relates to a kind of precast concrete warm keeping element based on polyurethane on the other hand, and the described precast concrete warm keeping element based on polyurethane comprises:
A) basalis, described basalis is prepared by concrete;
B) sandwich layer, described sandwich layer is prepared by hard polyurethane foam; And
C) optional surface layer, described surface layer is prepared by concrete.
In the preferred embodiment of the invention, the described precast concrete warm keeping element based on polyurethane also comprises: c) separation layer, described separation layer is arranged between described basalis and described sandwich layer, and contact with described basalis, described separation layer is by the second polyurethane reaction system preparation, and wherein said second polyurethane reaction system is described above.Wherein said separation layer can expand the process tolerance of sandwich layer, improves the heat-insulating property of hard polyurethane foam sandwich layer.
Precast concrete warm keeping element based on polyurethane of the present invention can be the precast concrete-polyurethane thermal insulation wallboard for exterior-wall heat insulation, also can be polyurethane heat-insulation concrete floor etc.
Precast concrete-polyurethane thermal insulation wallboard is except comprising basalis, sandwich layer, surface layer, optionally floated coat, architectural surface etc. can also be comprised, in addition according to the mounting method of warming plate, can the assemblies such as built-in fitting, lifting part, connector be set on heat-insulation wall plate.
Hereinafter, the invention will be further described in conjunction with the embodiments.Specific embodiment disclosed in this invention and method, its description is exemplary and nonrestrictive.
Embodiment
The raw material mentioned in context is described as follows:
Desmodur44V20L: polymeric MDI isocyanates, NCO content 31.5%, viscosity 160mPas25 DEG C, purchased from Bayer Material Science Co., Ltd;
bJ3-5601I: hard polyurethane foam spraying system, viscosity 125mPas25 DEG C, purchased from Bayer Material Science Co., Ltd;
bJ3-5603I: hard polyurethane foam spraying system, viscosity 285mPas25 DEG C, purchased from Bayer Material Science Co., Ltd;
sPRAY AL810: hard polyurethane foam spraying system, viscosity 270mPas25 DEG C, purchased from Bayer Material Science Co., Ltd;
sPRAY H03: hard polyurethane foam spraying system, viscosity 1250mPas25 DEG C, purchased from Bayer Material Science Co., Ltd;
Graco Reactor A-20 type conventional high-pressure flush coater: purchased from GRACO company.
Embodiment 1
With Graco Reactor A-20 type conventional high-pressure flush coater, by the component Desmodur44V20L of the second polyurethane reaction system and
sPRAY H03 material temperature is adjusted to 45-50 DEG C and is sprayed on fresh cast moist concrete basalis by 1: 1 volume ratio, and the reaction of polyurethane coating system, foaming, solidification, form a 1-5mm spraying polyurethane separation layer.The performance of gained spraying polyurethane separation layer lists in table 1-1.
The performance of table 1-1 second polyurethane reaction system
After the second polyurethane reaction system has sprayed 2-4 minute, by the component Desmodur44V20L of the first polyurethane reaction system and
bJ3-5601I material temperature is adjusted to 45-50 DEG C and is sprayed on the surface of separation layer by 1: 1 volume ratio, and the reaction of polyurethane coating system, foaming, solidification, form a 20-30mm polyurethane coating sandwich layer.Repeat above-mentioned spraying operation and reach desired thickness to spray foam sandwich layer.The performance of gained spraying polyurethane sandwich layer lists in table 1-2.Environment temperature about 25 DEG C.The polyurethane foam surface temperature of the first polyurethane reaction system gained is about 20-25 DEG C.
The reaction time of table 1-1 first polyurethane reaction system and foaming properties
Embodiment 1 illustrates, the hard polyurethane foam sandwich layer obtained by the first polyurethane reaction system has good physical property and heat-proof quality.
Embodiment 2
With Graco Reactor A-20 type conventional high-pressure flush coater, by the component Desmodur44V20L of the second polyurethane reaction system and
bJ3-5603I material temperature is adjusted to 45-50 DEG C and is sprayed on fresh cast moist concrete basalis by 1: 1 volume ratio, the reaction of polyurethane coating system, foaming, solidification, forms one deck 1-5mm polyurethane separation layer.The performance of gained spraying polyurethane separation layer lists in table 2-1.Environment temperature about 25 DEG C, the second polyurethane reaction system gained foam surface temperature is about 20-25 DEG C.
The reaction time of table 2-1 second polyurethane reaction system and foaming properties
After the second polyurethane reaction system has sprayed 2-4 minute, by the component Desmodur44V20L of the first polyurethane reaction system and
aL810 material temperature is adjusted to 45-50 DEG C and is sprayed in polyurethane insulation surface by 1: 1 volume ratio, and the reaction of polyurethane coating system, foaming, solidification, form a 20-30mm hard polyurethane foam sandwich layer.Repeat aforesaid operations and reach required depth of foam to spray foam sandwich layer.The performance of gained polyurethane spray foam sandwich layer lists in table 2-2.Environment temperature about 25 DEG C, the first polyurethane reaction system gained foam surface temperature is about 20-25 DEG C.
The reaction time of table 2-2 first polyurethane reaction system and foaming properties
When not using the second polyurethane reaction system
when BJ3-56031/44V20L forms separation layer, and directly by the first polyurethane reaction system
when AL810/44V20L sprays to moist green concrete surface, 2-10mm comparatively low-density can be formed at concrete surface, the higher rigid foam froth bed of percent opening.This layer of rigid foam froth bed presents high thermal conductivity 23-24mW/m.K.Foams and concrete are not connected side, and surface portion presents defect, has irregular wave Slippage to produce.
Embodiment 2 illustrates, have good physical property and heat-proof quality, and gained hard polyurethane foam sandwich layer has better mechanical property and surface structure according to the precast concrete warm keeping element based on polyurethane that method provided by the invention obtains.
Claims (14)
1. a preparation method for the prefabricated precast concrete warm keeping element based on polyurethane, the described precast concrete warm keeping element based on polyurethane comprises basalis, sandwich layer and optional surface layer, and described preparation method comprises:
I) provide unhardened basalis, described unhardened basalis is by unhardened concrete preparation;
II) on described unhardened basalis, form described sandwich layer, described sandwich layer, by using the first polyurethane reaction system on described unhardened basalis, forms hard polyurethane foam to be used as described sandwich layer after described first polyurethane reaction system solidification;
III) on described sandwich layer, concrete that is unhardened or sclerosis is optionally used; And
IV) make described unhardened concrete sclerosis to form described basalis and described optional surface layer.
2. method according to claim 1, the thickness of wherein said sandwich layer is 20-100mm.
3. method according to claim 1, described method also comprises: V) on described unhardened basalis, first form separation layer, the step of described sandwich layer is formed again on described separation layer, wherein said separation layer, by using the second polyurethane reaction system on described unhardened basalis, forms described separation layer after described second polyurethane reaction system solidification.
4. method according to claim 3, the gel time of wherein said second polyurethane reaction system is less than 20 seconds.
5. method according to claim 3, the thickness of described separation layer is 1-20mm.
6. method according to claim 3, forms hard polyurethane foam, soft polyurethane foam or polyurethane elastomer after wherein said second polyurethane reaction system solidification.
7. method according to claim 3, the density of wherein said separation layer is 15-1000kg/m
3.
8., based on a precast concrete warm keeping element for polyurethane, comprising:
A) basalis, described basalis is prepared by concrete;
B) sandwich layer, described sandwich layer is prepared by hard polyurethane foam; And
C) optional surface layer, described surface layer is prepared by concrete.
9. the precast concrete warm keeping element based on polyurethane according to claim 8, the thickness of described sandwich layer is 20-100mm.
10. the precast concrete warm keeping element based on polyurethane according to claim 8, the described precast concrete warm keeping element based on polyurethane also comprises: c) separation layer, described separation layer is arranged between described basalis and described sandwich layer, and contact with described basalis, described separation layer is by the second polyurethane reaction system preparation.
The 11. precast concrete warm keeping elements based on polyurethane according to claim 10, the gel time of described second polyurethane reaction system is less than 20 seconds.
12. the precast concrete warm keeping element based on polyurethane according to claim 10, the thickness of described separation layer is 1-20mm.
The 13. precast concrete warm keeping elements based on polyurethane according to claim 10, form hard polyurethane foam, soft polyurethane foam or polyurethane elastomer after wherein said second polyurethane reaction system solidification.
14. the precast concrete warm keeping element based on polyurethane according to claim 10, the density of wherein said separation layer is 15-1000kg/m
3.
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|---|---|---|---|
| CN201310756919.9A CN104746794B (en) | 2013-12-31 | 2013-12-31 | The preparation method of precast concrete warm keeping element based on polyurethane |
| PCT/EP2014/079107 WO2015101549A1 (en) | 2013-12-31 | 2014-12-23 | Process for preparing a precast polyurethane-based concrete insulation element and element obtained by such process |
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| CN201310756919.9A CN104746794B (en) | 2013-12-31 | 2013-12-31 | The preparation method of precast concrete warm keeping element based on polyurethane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105541395A (en) * | 2016-01-14 | 2016-05-04 | 中建一局集团第二建筑有限公司 | Novel concrete vertical member maintenance cover facing material and corresponding maintenance method |
| CN107553806A (en) * | 2016-07-01 | 2018-01-09 | 科思创聚合物（中国）有限公司 | Polyurethane concrete sandwich element and its preparation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437038A (en) * | 2016-07-21 | 2017-02-22 | 杭州久盛建材有限公司 | Corrugated waterproof heat-insulation integrated plate, processing technique and construction method |
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| CN101906845A (en) * | 2010-07-07 | 2010-12-08 | 常熟科盈复合材料有限公司 | Light-weight and high-intensity wall plate |
| CN203080713U (en) * | 2012-11-26 | 2013-07-24 | 江苏尼高科技有限公司 | Three-dimensional gridding cloth polyurethane thermal insulation composite board |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858438C1 (en) * | 1998-05-26 | 2000-03-23 | Alexander Bauer | Prefabricated wall section for construction of buildings is made by distributing unreacted foam onto outer shell and turning structure over to complete inner shell |
| FR2986810B1 (en) * | 2012-02-09 | 2014-12-19 | Faceinvent S A | METHOD FOR MANUFACTURING A STRUCTURE FOR BUILDING CONSTRUCTION |
-
2013
- 2013-12-31 CN CN201310756919.9A patent/CN104746794B/en not_active Expired - Fee Related
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2014
- 2014-12-23 WO PCT/EP2014/079107 patent/WO2015101549A1/en active Application Filing
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|---|---|---|---|---|
| DE4200159C1 (en) * | 1992-01-07 | 1993-03-18 | Ralf 2872 Hude De Mehrings | Prodn. of plate section for sound-proofing wall - by forming steel-concrete carrier plate with profiled sound-absorbing front plate contg. elastic granules and binding agent shaped with stamp |
| EP1010828A2 (en) * | 1998-12-17 | 2000-06-21 | Alexander Bauer | Production process of a prefabricated wall element for the construction of building walls |
| CN101139857A (en) * | 2003-09-15 | 2008-03-12 | 邱则有 | Lightweight tyre mould component for cast-in-situs concrete |
| CN201141184Y (en) * | 2007-12-24 | 2008-10-29 | 陈炳辉 | Three-layer heat preserving decoration compound board |
| CN101906845A (en) * | 2010-07-07 | 2010-12-08 | 常熟科盈复合材料有限公司 | Light-weight and high-intensity wall plate |
| CN203080713U (en) * | 2012-11-26 | 2013-07-24 | 江苏尼高科技有限公司 | Three-dimensional gridding cloth polyurethane thermal insulation composite board |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541395A (en) * | 2016-01-14 | 2016-05-04 | 中建一局集团第二建筑有限公司 | Novel concrete vertical member maintenance cover facing material and corresponding maintenance method |
| CN105541395B (en) * | 2016-01-14 | 2017-11-21 | 中建一局集团第二建筑有限公司 | Maintenance method of concrete vertical member |
| CN107553806A (en) * | 2016-07-01 | 2018-01-09 | 科思创聚合物（中国）有限公司 | Polyurethane concrete sandwich element and its preparation method |
| CN107553806B (en) * | 2016-07-01 | 2021-08-24 | 科思创德国股份有限公司 | Polyurethane concrete sandwich element and its making method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104746794B (en) | 2019-03-01 |
| WO2015101549A1 (en) | 2015-07-09 |
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