CN112094496A - Hard foam polyurethane insulation board and preparation process thereof - Google Patents
Hard foam polyurethane insulation board and preparation process thereof Download PDFInfo
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- CN112094496A CN112094496A CN202010956536.6A CN202010956536A CN112094496A CN 112094496 A CN112094496 A CN 112094496A CN 202010956536 A CN202010956536 A CN 202010956536A CN 112094496 A CN112094496 A CN 112094496A
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- foam polyurethane
- adhesive
- insulation board
- hard foam
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- 239000006260 foam Substances 0.000 title claims abstract description 84
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 57
- 239000004814 polyurethane Substances 0.000 title claims abstract description 57
- 238000009413 insulation Methods 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000002245 particle Substances 0.000 claims abstract description 52
- 239000000853 adhesive Substances 0.000 claims abstract description 49
- 230000001070 adhesive effect Effects 0.000 claims abstract description 49
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 35
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000003085 diluting agent Substances 0.000 claims abstract description 19
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 14
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000007865 diluting Methods 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 7
- 229920000570 polyether Polymers 0.000 claims description 7
- 229920001228 polyisocyanate Polymers 0.000 claims description 7
- 239000005056 polyisocyanate Substances 0.000 claims description 7
- 229920005862 polyol Polymers 0.000 claims description 7
- 150000003077 polyols Chemical class 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003623 enhancer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention relates to the technical field of insulation boards of building outer walls and preparation thereof, in particular to a hard foam polyurethane insulation board which comprises a raw material for producing hard foam polyurethane foam particles, a strength reinforcing agent, an adhesive and a diluent, wherein the weight ratio of the raw material for producing the hard foam polyurethane foam particles to the strength reinforcing agent is 100: (5-7), wherein the weight ratio of the adhesive to the rigid foam polyurethane particles is (6-12): 100, the weight ratio of the adhesive to the diluent is (2-5): (6-10), a preparation process of the hard foam polyurethane insulation board is also designed, and the steps are simple. The hard foam polyurethane insulation board provided by the invention is simple in raw materials, low in price, good in performance, simple in preparation process, strong in constructability, greatly reduced in production cost and significant in practical application.
Description
Technical Field
The invention relates to the technical field of insulation boards of building outer walls and preparation thereof, in particular to a hard foam polyurethane insulation board and a preparation process thereof.
Background
The hard polyurethane has low heat conductivity coefficient, good thermal property, moisture-proof and waterproof properties, fire resistance, flame retardance, high temperature resistance and excellent heat-insulating property, can reduce the thickness of the peripheral structure of a building under the condition of meeting the same heat-insulating requirement so as to increase the indoor use area, and has strong deformation resistance, difficult cracking, stable and safe facing. In conclusion, the rigid polyurethane is a good substance with high comprehensive cost performance.
The wall heat insulation material commonly used in China is extremely easy to burn, and how to integrate the high-efficiency energy-saving and excellent fireproof functions of the heat insulation material becomes an industrial problem. The polyurethane external wall heat-insulation fireproof system has outstanding fireproof performance, achieves the national A-level standard, is fireproof and heat-resistant, does not melt at high temperature, has no dripping and low smoke, has good dimensional stability, has good heat-insulation and energy-saving effects, combines excellent fireproof performance and good energy-saving effects, and is suitable for various fields such as external wall heat insulation.
However, the currently prepared rigid foam polyurethane insulation board has poor insulation effect, complex preparation process, more and complicated raw materials, low construction efficiency and low applicability.
Disclosure of Invention
In view of the above problems, the present invention aims to overcome the shortcomings of the prior art, and provide a new rigid foam polyurethane insulation board and a preparation process thereof, which can improve the performance of the rigid foam polyurethane insulation board and simplify the preparation process thereof.
The purpose of the invention is realized by the following technical scheme:
the hard foam polyurethane insulation board comprises raw materials for producing hard foam polyurethane foam particles, a strength reinforcing agent, an adhesive and a diluent, wherein the weight ratio of the raw materials to the strength reinforcing agent is 100: (5-7), wherein the weight ratio of the adhesive to the rigid foam polyurethane particles is (6-12): 100, the weight ratio of the adhesive to the diluent is (2-5): (6-10).
Preferably, the raw materials are polyisocyanate and polyether polyol, and the weight ratio of the polyisocyanate to the polyether polyol is (2-3): (5-7).
Preferably, the strength enhancer is one of glass fiber or nano calcium carbonate.
Preferably, the adhesive is one of polyurethane glue or urea-formaldehyde glue.
Preferably, the diluent is one of ethyl acetate or ethanol.
In order to achieve the purpose, the invention also provides a preparation process of the hard foam polyurethane insulation board, which comprises the following steps:
step S1: preparation of rigid foam polyurethane particles: preparing raw materials for producing hard foam polyurethane foam particles, wherein the raw materials comprise a strength reinforcing agent, closing a mould, casting and foaming by using a casting machine to obtain a hard foam polyurethane foam particle plate, and then putting the prepared hard foam polyurethane foam particle plate into a crusher to be crushed into foam particles to obtain the hard foam polyurethane foam particles;
step S2: diluting the adhesive: measuring a certain amount of adhesive and diluent, and diluting the adhesive to a certain degree according to a certain proportion to obtain the diluted adhesive;
step S3: mixing of solvents: adding the adhesive diluted in the step S2 into the hard foamed polyurethane foam particles crushed in the step S1, and fully stirring to obtain a mixture;
step S4: and (3) film pressing and forming: weighing the mixture obtained in the step S3, putting the mixture into a film pressing machine, setting certain pressure and temperature, and keeping the temperature and the pressure for a period of time;
step S5: demolding: and (5) demolding the product subjected to film pressing in the step S4 to obtain the hard foam polyurethane insulation board.
Preferably, the hardness of the hard foam polyurethane particle board in step S1 is 60D shore or more, and the size of the hard foam polyurethane particles is 1-3 cm.
Preferably, the pressure in step S4 is 0.1-0.3MPa, the temperature is 120-150 ℃, and the time of heat preservation and pressure maintaining is 1-2 hours.
Preferably, the volume ratio of the mixture before and after the pressure is applied to the mixture in the film pressing in the step S4 is (2.5-3.5): 1.
The invention has the beneficial effects that: the hard foam polyurethane insulation board provided by the invention is simple in raw materials, low in price, good in performance, simple in preparation process, strong in constructability, greatly reduced in production cost and significant in practical application.
Drawings
FIG. 1 is an overall flow chart of a preparation process of a hard foam polyurethane insulation board of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Detailed description of the preferred embodiment 1
The invention relates to a hard foam polyurethane insulation board, which comprises 100 parts of raw materials for producing hard foam polyurethane foam particles and 5 parts of strength reinforcing agent, wherein the weight ratio of an adhesive to the hard foam polyurethane foam particles is 6: 100, the weight ratio of the adhesive to the diluent is 2: 10, wherein the raw materials comprise 2 parts of polyisocyanate and 7 parts of polyether polyol, the strength enhancer is glass fiber, the adhesive is polyurethane adhesive, and the diluent is ethyl acetate.
Fig. 1 is an overall flow chart of a preparation process of a hard foam polyurethane insulation board, and specifically, the preparation process of the hard foam polyurethane insulation board comprises the following steps:
step S1: preparation of rigid foam polyurethane particles: preparing raw materials for producing hard foam polyurethane foam particles, wherein the raw materials comprise a strength reinforcing agent, closing a mould, pouring and foaming by using a pouring machine to obtain a hard foam polyurethane foam particle plate with the hardness of Shore 60D, and then putting the prepared hard foam polyurethane foam particle plate into a crusher to be crushed into foam particles to obtain the hard foam polyurethane foam particles with the size of 1 cm;
step S2: diluting the adhesive: measuring a certain amount of adhesive and diluent, and diluting the adhesive to a certain degree according to a certain proportion to obtain the diluted adhesive;
step S3: mixing of solvents: adding the adhesive diluted in the step S2 into the hard foamed polyurethane foam particles crushed in the step S1, and fully stirring to obtain a mixture;
step S4: and (3) film pressing and forming: weighing the mixture obtained in the step S3, putting the mixture into a pressed film, setting a certain pressure to be 0.1MPa and a temperature to be 120 ℃, and keeping the temperature and the pressure for 2 hours until the volume ratio of the mixture in the pressed film before and after the pressure is applied is 2.5: 1;
step S5: demolding: and (5) demolding the product subjected to film pressing in the step S4 to obtain the hard foam polyurethane insulation board.
Specific example 2
The invention relates to a hard foam polyurethane insulation board, which comprises 100 parts of raw materials for producing hard foam polyurethane foam particles and 7 parts of strength reinforcing agent, wherein the weight ratio of an adhesive to the hard foam polyurethane foam particles is 12: 100, the weight ratio of the adhesive to the diluent is 5: and 6, wherein the raw materials comprise 3 parts of polyisocyanate and 5 parts of polyether polyol, the strength enhancer is nano calcium carbonate, the adhesive is urea-formaldehyde glue, and the diluent is ethanol.
Fig. 1 is an overall flow chart of a preparation process of a hard foam polyurethane insulation board, and specifically, the preparation process of the hard foam polyurethane insulation board comprises the following steps:
step S1: preparation of rigid foam polyurethane particles: preparing raw materials for producing hard foam polyurethane foam particles, wherein the raw materials comprise a strength reinforcing agent, closing a mould, pouring and foaming by using a pouring machine to obtain a hard foam polyurethane foam particle plate with the hardness of Shore 65D, and then putting the prepared hard foam polyurethane foam particle plate into a crusher to be crushed into foam particles to obtain hard foam polyurethane foam particles with the size of 3 cm;
step S2: diluting the adhesive: measuring a certain amount of adhesive and diluent, and diluting the adhesive to a certain degree according to a certain proportion to obtain the diluted adhesive;
step S3: mixing of solvents: adding the adhesive diluted in the step S2 into the hard foamed polyurethane foam particles crushed in the step S1, and fully stirring to obtain a mixture;
step S4: and (3) film pressing and forming: weighing the mixture obtained in the step S3, putting the mixture into a pressed film, setting a certain pressure to be 0.3MPa and a temperature to be 150 ℃, and keeping the temperature and the pressure for 1 hour until the volume ratio of the mixture in the pressed film before and after the pressure is applied is 3.5: 1;
step S5: demolding: and (5) demolding the product subjected to film pressing in the step S4 to obtain the hard foam polyurethane insulation board.
Specific example 3
The invention relates to a hard foam polyurethane insulation board, which comprises 100 parts of raw materials for producing hard foam polyurethane foam particles and 6 parts of strength reinforcing agent, wherein the weight ratio of an adhesive to the hard foam polyurethane foam particles is 10: 100, the weight ratio of the adhesive to the diluent is 3: and 8, wherein the raw materials comprise 3 parts of polyisocyanate and 6 parts of polyether polyol, the strength enhancer is glass fiber, and the adhesive is polyurethane adhesive and the diluent is ethyl acetate.
Fig. 1 is an overall flow chart of a preparation process of a hard foam polyurethane insulation board, and specifically, the preparation process of the hard foam polyurethane insulation board comprises the following steps:
step S1: preparation of rigid foam polyurethane particles: preparing raw materials for producing hard foam polyurethane foam particles, wherein the raw materials comprise a strength reinforcing agent, closing a mould, pouring and foaming by using a pouring machine to obtain a hard foam polyurethane foam particle plate with the hardness of Shore 70D, and then putting the prepared hard foam polyurethane foam particle plate into a crusher to be crushed into foam particles to obtain hard foam polyurethane foam particles with the size of 2 cm;
step S2: diluting the adhesive: measuring a certain amount of adhesive and diluent, and diluting the adhesive to a certain degree according to a certain proportion to obtain the diluted adhesive;
step S3: mixing of solvents: adding the adhesive diluted in the step S2 into the hard foamed polyurethane foam particles crushed in the step S1, and fully stirring to obtain a mixture;
step S4: and (3) film pressing and forming: weighing the mixture obtained in the step S3, putting the mixture into a pressed film, setting a certain pressure to be 0.2MPa and a temperature to be 130 ℃, and keeping the temperature and the pressure for 1.5 hours until the volume ratio of the mixture in the pressed film before and after the pressure is applied is 3.0: 1;
step S5: demolding: and (5) demolding the product subjected to film pressing in the step S4 to obtain the hard foam polyurethane insulation board.
And (4) analyzing results:
the prepared hard foam polyurethane insulation board has the following compression strength (vertical to the board surface) through detection: 230 kPa; tensile strength (perpendicular to the panel): 210 kPa; bending strength: 230 kPa; the water absorption rate is less than 3 percent; dimensional stability (-30-70 ℃) is less than 1%; oxygen index: 30 percent; the thermal conductivity coefficient is 0.04W/(m.K); the fireproof performance of A2 level is achieved; and (3) breakage resistance: the advantages are excellent.
The data show that the hard foam polyurethane insulation board provided by the invention is simple in raw materials, low in price, good in performance, simple in preparation process, and capable of greatly reducing the production cost due to the constructability, and has practical application significance.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the changes or modifications within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a hard bubble polyurethane heated board which characterized in that: the method comprises the following steps of producing raw materials of the hard foam polyurethane foam particles, a strength reinforcing agent, an adhesive and a diluent, wherein the weight ratio of the raw materials to the strength reinforcing agent is 100: (5-7), wherein the weight ratio of the adhesive to the rigid foam polyurethane particles is (6-12): 100, the weight ratio of the adhesive to the diluent is (2-5): (6-10).
2. The rigid foam polyurethane insulation board of claim 1, wherein: the raw materials are polyisocyanate and polyether polyol, and the weight ratio of the polyisocyanate to the polyether polyol is (2-3): (5-7).
3. The rigid foam polyurethane insulation board of claim 1, wherein: the strength reinforcing agent is one of glass fiber or nano calcium carbonate.
4. The rigid foam polyurethane insulation board of claim 1, wherein: the adhesive is one of polyurethane adhesive or urea-formaldehyde adhesive.
5. The rigid foam polyurethane insulation board of claim 1, wherein: the diluent is one of ethyl acetate or ethanol.
6. A preparation process of a hard foam polyurethane insulation board is characterized by comprising the following steps: the method comprises the following steps:
step S1: preparation of rigid foam polyurethane particles: preparing raw materials for producing hard foam polyurethane foam particles, wherein the raw materials comprise a strength reinforcing agent, closing a mould, casting and foaming by using a casting machine to obtain a hard foam polyurethane foam particle plate, and then putting the prepared hard foam polyurethane foam particle plate into a crusher to be crushed into foam particles to obtain the hard foam polyurethane foam particles;
step S2: diluting the adhesive: measuring a certain amount of adhesive and diluent, and diluting the adhesive to a certain degree according to a certain proportion to obtain the diluted adhesive;
step S3: mixing of solvents: adding the adhesive diluted in the step S2 into the hard foamed polyurethane foam particles crushed in the step S1, and fully stirring to obtain a mixture;
step S4: and (3) film pressing and forming: weighing the mixture obtained in the step S3, putting the mixture into a film pressing machine, setting certain pressure and temperature, and keeping the temperature and the pressure for a period of time;
step S5: demolding: and (5) demolding the product subjected to film pressing in the step S4 to obtain the hard foam polyurethane insulation board.
7. The preparation process of the hard foam polyurethane insulation board according to claim 6, characterized in that: in the step S1, the hardness of the hard foam polyurethane particle board is higher than shore 60D, and the size of the hard foam polyurethane particles is 1-3 cm.
8. The preparation process of the hard foam polyurethane insulation board according to claim 6, characterized in that: the pressure in the step S4 is 0.1-0.3MPa, the temperature is 120-150 ℃, and the time of heat preservation and pressure maintaining is 1-2 hours.
9. The preparation process of the hard foam polyurethane insulation board according to claim 6, characterized in that: in the step S4, the volume ratio of the mixture before and after the mixture in the film pressing is applied with pressure is (2.5-3.5): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010956536.6A CN112094496A (en) | 2020-09-11 | 2020-09-11 | Hard foam polyurethane insulation board and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010956536.6A CN112094496A (en) | 2020-09-11 | 2020-09-11 | Hard foam polyurethane insulation board and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4063423A1 (en) * | 2021-03-24 | 2022-09-28 | Covestro Deutschland AG | Method for preparing an artificial board |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631631A (en) * | 2004-12-03 | 2005-06-29 | 江博新 | Method for making heat insulation board by recovery and regeneration of waste hard polyurethane foam |
| CN101249704A (en) * | 2008-03-31 | 2008-08-27 | 江苏绿源新材料有限公司 | Continuous production method of polyurethane insulation composite slab |
| CN102962938A (en) * | 2012-12-03 | 2013-03-13 | 南京红宝丽新材料有限公司 | Method for manufacturing composite thermal insulation board by utilizing rigid waste polyurethane foam and straws |
| CN111098438A (en) * | 2019-12-28 | 2020-05-05 | 民权绿源环保科技有限公司 | Method for preparing cold storage insulation board by using waste polyurethane rigid foam |
-
2020
- 2020-09-11 CN CN202010956536.6A patent/CN112094496A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631631A (en) * | 2004-12-03 | 2005-06-29 | 江博新 | Method for making heat insulation board by recovery and regeneration of waste hard polyurethane foam |
| CN101249704A (en) * | 2008-03-31 | 2008-08-27 | 江苏绿源新材料有限公司 | Continuous production method of polyurethane insulation composite slab |
| CN102962938A (en) * | 2012-12-03 | 2013-03-13 | 南京红宝丽新材料有限公司 | Method for manufacturing composite thermal insulation board by utilizing rigid waste polyurethane foam and straws |
| CN111098438A (en) * | 2019-12-28 | 2020-05-05 | 民权绿源环保科技有限公司 | Method for preparing cold storage insulation board by using waste polyurethane rigid foam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4063423A1 (en) * | 2021-03-24 | 2022-09-28 | Covestro Deutschland AG | Method for preparing an artificial board |
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Application publication date: 20201218 |