CN114790302A - Sound-insulation, shock-absorption and heat-insulation polyurethane composite board - Google Patents
Sound-insulation, shock-absorption and heat-insulation polyurethane composite board Download PDFInfo
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- CN114790302A CN114790302A CN202210386567.1A CN202210386567A CN114790302A CN 114790302 A CN114790302 A CN 114790302A CN 202210386567 A CN202210386567 A CN 202210386567A CN 114790302 A CN114790302 A CN 114790302A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/365—Coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
-
- 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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
-
- 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
- C08G18/4833—Polyethers containing oxyethylene units
-
- 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
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
-
- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
- C08G18/6677—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
- C08J2475/08—Polyurethanes from polyethers
Abstract
The invention discloses a sound-insulation, shock-absorption and heat-preservation polyurethane composite board, and belongs to the field of building materials. It comprises a polyurethane layer and a polyethylene foaming layer; the polyurethane composite board is prepared by the following steps: and uniformly mixing the polyurethane prepolymer under high pressure, spraying the polyurethane prepolymer on a polyethylene foaming layer, and pressing and curing the polyurethane prepolymer through a temperature-controlled laminating machine to obtain the polyurethane composite board. The polyethylene foam layer has good sound insulation performance and shock absorption performance, so that the polyethylene foam layer and the shock absorption layer are compounded to ensure better sound insulation and shock absorption performance of the polyurethane composite board; in addition, the modified basalt flakes are added into the polyurethane prepolymer, so that the sound insulation and heat preservation performance of a polyurethane foaming layer can be improved, and good flame retardant performance can be endowed; furthermore, the invention adopts bio-based polyol as one of the polyurethane raw materials, reduces the usage amount of polyether polyol and meets the requirement of environmental protection.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a sound-insulation, shock-absorption and heat-preservation polyurethane composite board.
Background
The polyurethane board is a polyurethane sandwich board which is completely made of PU or formed by compounding PU and a color steel plate, is mainly used for an external thermal insulation system of industrial and civil buildings, and becomes a product system which is most widely used by PU.
The polyol solution is prepared by pouring a polyol solution obtained by mixing an isocyanate component and a polyol component with various additives such as a catalyst and, if necessary, a crosslinking agent into a mold and reacting the mixture. However, the polyurethane board prepared by the existing method has uneven cell density, so that the heat preservation effect needs to be improved, and the cost is high. In addition, in order to meet the high demands of modern people on privacy, the sound insulation performance of the polyurethane board needs to be improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a sound-insulation, shock-absorption and heat-preservation polyurethane composite board.
The polyurethane composite board comprises the polyurethane layer and the polyethylene foaming layer, and the polyethylene foaming layer has good sound insulation performance and shock absorption performance, so that the polyurethane composite board can ensure excellent sound insulation performance and shock absorption performance by compounding the polyurethane layer and the polyethylene foaming layer.
The purpose of the invention can be realized by the following technical scheme:
a sound-insulation, shock-absorption and heat-insulation polyurethane composite board comprises a polyurethane layer and a polyethylene foaming layer;
the polyurethane composite board is prepared by the following steps:
and uniformly mixing the polyurethane prepolymer under high pressure, spraying the polyurethane prepolymer on a polyethylene foaming layer, and pressing and curing the polyurethane prepolymer through a temperature-controlled laminating machine to obtain the polyurethane composite board.
Further, the polyurethane prepolymer is prepared by the following steps:
s1, mixing hemp fibers, polyethylene glycol and glycerol in proportion, adding concentrated sulfuric acid as a catalyst for liquefaction, controlling the liquefaction time to be 140-;
wherein the adding amount of the concentrated sulfuric acid is 5-6% of the total mass of the polyethylene glycol, the glycerol and the hemp fiber;
the mass ratio of the hemp fibers to the polyethylene glycol to the glycerol is 4-5:2: 3.6;
s2, mixing bio-based polyol, polyether polyol, isocyanate, tin isooctanoate, modified basalt scales and distilled water according to the mass ratio of 4-5:50-60:55:9:6:1, and fully mixing and stirring to obtain a polyurethane prepolymer;
further, the modified basalt scales are prepared by the following steps:
a1, dispersing basalt scales in an ethanol water solution with the mass fraction of 30%, adding a silane coupling agent KH560, raising the temperature to 68-70 ℃, stirring and reacting for 3-4h, filtering, washing and drying to obtain pretreated basalt scales;
the dosage ratio of the basalt flakes to the ethanol aqueous solution to the silane coupling agent KH560 is 10 g: 45-55mL: 2-3 g; performing surface treatment on the basalt scales by using a silane coupling agent KH560, grafting a siloxane chain on the surfaces of the basalt scales, and providing an epoxy group reaction site for subsequent reaction;
a2, placing the pretreated basalt flakes into a three-neck flask, adding a methanol aqueous solution, adjusting the pH value of the system to 8-8.5, adding melamine, raising the temperature to 45-50 ℃, reacting for 2 hours, cooling, filtering, washing and drying to obtain the modified basalt flakes.
The dosage ratio of the pretreated basalt scales to the methanol aqueous solution to the melamine is 10 g: 45-55mL, 1.8 g; under the alkaline reaction condition, enabling epoxy groups on the pretreated basalt scales to react with melamine, and grafting the melamine on the basalt scales;
the surface of the modified basalt phosphor plate is grafted with a flexible siloxane chain, and can form an interpenetration structure with a polyurethane chain, and in addition, the grafted melamine contains unreacted-NH 2, and can participate in polyurethane polymerization reaction, so the modified basalt phosphor plate can improve the bulk of the polyurethane layer, and after sound waves enter the polyurethane layer, the propagation path inside the formed network structure is lengthened, the friction damping and air viscous loss of the sound waves and the polyurethane layer are increased, sound energy is absorbed by materials, the sound absorption performance of the polyurethane layer is favorably improved, and the sound insulation performance of the polyurethane layer is improved; in addition, as the basalt flakes serving as inorganic materials have low heat conductivity and are in a sheet shape, the heat conduction path can be prolonged, and the dissipation of heat energy in the materials is increased, so that the heat conductivity of the polyurethane layer is reduced, and the heat insulation effect is improved; in addition, melamine is grafted on the surface of the modified basalt flakes, is a better flame-retardant material, can endow a polyurethane layer with good flame-retardant performance, can generate a chemical bonding effect with a polyurethane chain, improves the migration resistance and improves the flame-retardant durability.
The invention has the beneficial effects that:
the polyurethane composite board comprises the polyurethane layer and the polyethylene foam layer, and the polyethylene foam layer has good sound insulation performance and shock absorption performance, so that the polyurethane composite board can ensure better sound insulation performance and shock absorption performance by compounding the polyurethane layer and the polyethylene foam layer;
in addition, the modified basalt flakes are added into the polyurethane prepolymer, so that the sound insulation and heat preservation performance of a polyurethane foaming layer can be improved, and good flame retardant performance can be endowed;
furthermore, the invention adopts bio-based polyol as one of the polyurethane raw materials, reduces the use amount of polyether polyol and meets the requirement of environmental protection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example 1
Preparing modified basalt flakes:
a1, dispersing 10g of basalt scales in 45mL of ethanol aqueous solution with the mass fraction of 30%, adding 2g of silane coupling agent KH560, raising the temperature to 68 ℃, stirring for reaction for 4 hours, filtering, washing and drying to obtain pretreated basalt scales;
a2, placing 10g of the pretreated basalt flakes into a three-neck flask, adding 45mL of methanol aqueous solution, adjusting the pH value of the system to 8-8.5, adding 1.8g of melamine, raising the temperature to 45-50 ℃, reacting for 2 hours, cooling, filtering, washing and drying to obtain the modified basalt flakes.
Example 2
Preparing modified basalt flakes:
a1, dispersing 10g of basalt flakes into 55mL of ethanol water solution with the mass fraction of 30%, adding 3g of silane coupling agent KH560, raising the temperature to 70 ℃, stirring and reacting for 3 hours, filtering, washing and drying to obtain pretreated basalt flakes;
a2, placing 10g of pretreated basalt flakes into a three-neck flask, adding 55mL of methanol aqueous solution, adjusting the pH value of the system to 8-8.5, adding 1.8g of melamine, raising the temperature to 50 ℃ for reaction for 2h, cooling, filtering, washing and drying to obtain the modified basalt flakes.
Example 3
Preparation of polyurethane prepolymer:
s1, mixing 40g of hemp fibers, 20g of polyethylene glycol and 36g of glycerol in proportion, adding concentrated sulfuric acid as a catalyst to liquefy, and controlling the liquefying time to be 140min, the liquefying temperature to be 165 ℃ and the stirring speed to be 300r/min to obtain bio-based polyol;
wherein the adding amount of the concentrated sulfuric acid is 5 percent of the total mass of the polyethylene glycol, the glycerol and the hemp fiber;
s2, mixing bio-based polyol, polyether polyol, isocyanate, tin isooctanoate, modified basalt flakes and distilled water according to the mass ratio of 4:50-60:55:9:6:1, and fully mixing and stirring to obtain the polyurethane prepolymer.
Example 4
Preparation of polyurethane prepolymer:
s1, mixing 50g of hemp fiber, 20g of polyethylene glycol and 36g of glycerol in proportion, adding concentrated sulfuric acid as a catalyst for liquefaction, and controlling the liquefaction time to be 150min, the liquefaction temperature to be 170 ℃ and the stirring speed to be 300r/min to obtain bio-based polyol;
wherein the adding amount of the concentrated sulfuric acid is 6 percent of the total mass of the polyethylene glycol, the glycerol and the hemp fiber;
s2, mixing the bio-based polyol, the polyether polyol, the isocyanate, the tin isooctanoate, the modified basalt flakes and the distilled water according to the mass ratio of 5:60:55:9:6:1, and fully mixing and stirring to obtain the polyurethane prepolymer.
Comparative example 1
The modified basalt scales in the embodiment 3 are replaced by basalt scales which are not subjected to any treatment, and other raw materials and the preparation process are unchanged.
Comparative example 2
The modified basalt flake raw material in example 3 was removed, and the remaining raw materials and the preparation process were unchanged.
Example 5
Preparing a polyurethane composite board:
the polyurethane prepolymer prepared in example 3 was uniformly mixed under high pressure, sprayed on a polyethylene foam layer, and cured by pressing in a temperature-controlled laminator to obtain a polyurethane composite plate.
Example 6
Preparing a polyurethane composite board:
the polyurethane prepolymer prepared in the embodiment 4 is uniformly mixed under high pressure, sprayed on a polyethylene foam layer, and pressed and cured by a temperature-controlled laminating machine to prepare a polyurethane composite board.
Comparative example 3
Preparing a polyurethane composite board:
and (2) uniformly mixing the polyurethane prepolymer prepared in the comparative example 1 at high pressure, spraying the mixture on a polyethylene foam layer, and pressing and curing the mixture through a temperature-controlled laminating machine to prepare the polyurethane composite board.
Comparative example 4
Preparing a polyurethane composite board:
and (3) uniformly mixing the polyurethane prepolymer prepared in the comparative example 2 under high pressure, spraying the mixture on a polyethylene foaming layer, and pressing and curing the mixture through a temperature-controlled laminating machine to obtain the polyurethane composite board.
And (4) performance testing:
the composite sheets obtained in examples 5 to 6 and comparative examples 3 to 4 were subjected to the following performance tests: the thermal conductivity was measured according to GB/T10294-2008 "method for measuring Steady State thermal resistance of Heat insulating Material and related characteristics of thermal protective plate". The dimensional stability is determined according to GB/T8811-2008 "method for testing the dimensional stability of rigid foams". The sound absorption coefficient of the plate under 1000Hz, 1500Hz and 2000Hz is tested. The flame retardancy was measured in accordance with GB/T2406.2-2009 part 2 test for testing the flame behaviour of plastics by the oxygen index method. The specific test results are shown in the following table:
as can be seen from the above table, the boards obtained in examples 4 and 5 have good dimensional stability at 70 ℃, which indicates that the polyurethane board obtained in the present invention has good heat resistance, and the boards obtained in examples 4 and 5 have low thermal conductivity, which indicates that the polyurethane board obtained in the present invention has good thermal insulation performance; according to the sound absorption coefficients of the plate under 1000Hz, 1500Hz and 2000Hz, the polyurethane plate prepared by the invention has good sound insulation performance; as can be seen from the data of comparative example 1 and comparative example 2, the basalt scales can be improved in heat resistance and sound insulation to some extent and flame retardant properties to a greater extent after being modified.
In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (7)
1. A sound-insulation, shock-absorption and heat-insulation polyurethane composite board is characterized by comprising a polyurethane layer and a polyethylene foaming layer;
the polyurethane composite board is prepared by the following steps:
and uniformly mixing the polyurethane prepolymer under high pressure, spraying the polyurethane prepolymer on a polyethylene foam layer, and pressing and curing the polyurethane prepolymer by a temperature-controlled laminating machine to obtain the polyurethane composite board.
2. The sound-insulation, shock-absorption and thermal-insulation polyurethane composite board as claimed in claim 1, wherein the polyurethane prepolymer is prepared by the following steps:
s1, mixing hemp fibers, polyethylene glycol and glycerol in proportion, adding concentrated sulfuric acid as a catalyst to liquefy, controlling the liquefying time at 140-;
s2, mixing bio-based polyol, polyether polyol, isocyanate, tin isooctanoate, modified basalt flakes and distilled water according to the mass ratio of 4-5:50-60:55:9:6:1, and fully mixing and stirring to obtain the polyurethane prepolymer.
3. The sound-insulation, shock-absorption and heat-preservation polyurethane composite board as claimed in claim 2, wherein the concentrated sulfuric acid added in step S1 is 5-6% of the total mass of the polyethylene glycol, the glycerol and the hemp fiber.
4. The sound-insulation, shock-absorption and heat-preservation polyurethane composite board as claimed in claim 2, wherein the mass ratio of the hemp fiber, the polyethylene glycol and the glycerol in the step S1 is 4-5:2: 3.6.
5. The sound-insulation, shock-absorption and heat-preservation polyurethane composite board as claimed in claim 2, wherein the modified basalt scales are prepared by the following steps:
a1, dispersing the basalt flakes in an ethanol water solution with the mass fraction of 30%, adding a silane coupling agent KH560, raising the temperature to 68-70 ℃, stirring and reacting for 3-4h, filtering, washing and drying to obtain pretreated basalt flakes;
a2, placing the pretreated basalt flakes into a three-neck flask, adding a methanol water solution, adjusting the pH value of the system to 8-8.5, adding melamine, raising the temperature to 45-50 ℃, reacting for 2 hours, cooling, filtering, washing and drying to obtain the modified basalt flakes.
6. The sound-insulation, shock-absorption and heat-preservation polyurethane composite board as claimed in claim 5, wherein the dosage ratio of the basalt flakes, the ethanol aqueous solution and the silane coupling agent KH560 in the step A1 is 10 g: 45-55mL: 2-3 g.
7. The sound-insulation, shock-absorption and heat-preservation polyurethane composite board as claimed in claim 5, wherein the dosage ratio of basalt scales, methanol aqueous solution and melamine pretreated in the step A2 is 10 g: 45-55mL, 1.8 g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210386567.1A CN114790302B (en) | 2022-04-12 | 2022-04-12 | Sound-insulation, shock-absorption and heat-insulation polyurethane composite board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210386567.1A CN114790302B (en) | 2022-04-12 | 2022-04-12 | Sound-insulation, shock-absorption and heat-insulation polyurethane composite board |
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| CN114790302A true CN114790302A (en) | 2022-07-26 |
| CN114790302B CN114790302B (en) | 2023-03-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665293A (en) * | 2013-12-12 | 2014-03-26 | 中科院广州能源所盱眙凹土研发中心 | Preparation method of attapulgite modified bio-based polyurethane foam insulation material |
| US20170037203A1 (en) * | 2014-04-10 | 2017-02-09 | Covestro Deutschland Ag | Polyurethane composite material and process of preparing same |
| CN107724554A (en) * | 2017-11-08 | 2018-02-23 | 湖州绿色新材股份有限公司 | A kind of vibration damping thermal insulating composite panel and preparation method thereof |
| CN110550870A (en) * | 2019-10-14 | 2019-12-10 | 黑龙江省科学院高技术研究院 | surface treatment method of basalt scale fibers |
-
2022
- 2022-04-12 CN CN202210386567.1A patent/CN114790302B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665293A (en) * | 2013-12-12 | 2014-03-26 | 中科院广州能源所盱眙凹土研发中心 | Preparation method of attapulgite modified bio-based polyurethane foam insulation material |
| US20170037203A1 (en) * | 2014-04-10 | 2017-02-09 | Covestro Deutschland Ag | Polyurethane composite material and process of preparing same |
| CN107724554A (en) * | 2017-11-08 | 2018-02-23 | 湖州绿色新材股份有限公司 | A kind of vibration damping thermal insulating composite panel and preparation method thereof |
| CN110550870A (en) * | 2019-10-14 | 2019-12-10 | 黑龙江省科学院高技术研究院 | surface treatment method of basalt scale fibers |
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| CN114790302B (en) | 2023-03-31 |
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