CN107488250A - Light thermal-insulation type hard polyaminoester exterior wall foamed material - Google Patents
Light thermal-insulation type hard polyaminoester exterior wall foamed material Download PDFInfo
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- CN107488250A CN107488250A CN201710794290.5A CN201710794290A CN107488250A CN 107488250 A CN107488250 A CN 107488250A CN 201710794290 A CN201710794290 A CN 201710794290A CN 107488250 A CN107488250 A CN 107488250A
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- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
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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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5317—Phosphonic compounds, e.g. R—P(:O)(OR')2
- C08K5/5333—Esters of phosphonic acids
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- 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
- C08L75/06—Polyurethanes from polyesters
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/06—Polyurethanes from polyesters
-
- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of light thermal-insulation type hard polyaminoester exterior wall foamed material, is made up of the raw material foaming of following weight：Poly- 4,4 ' 30 40 parts of '-diphenylmethane diisocyanates, 30 40 parts of PEPA, 24 parts of catalyst, 24 parts of fire retardant, 12 parts of foaming agent, 24 parts of foam stabiliser, 35 parts of silicone oil, 20 30 parts of expanded perlite, 15 25 parts of talcum powder, 10 20 parts of diatomite, 20 30 parts of deionized water.Light thermal-insulation type hard polyaminoester exterior wall foamed material of the present invention has the characteristics of intensity height, light weight, heat conduction is low, dimensional stability is good, insulation effect is good, wear-and corrosion-resistant is good, also there is efficient fire retardancy, and CFC (CFC) foaming agent is not used, but fluorine chloralkane has been used as foaming agent, energy-conserving and environment-protective.In addition, the preparation technology of the present invention is simple, cost is cheap, and equipment requirement is low, production process environmental protection, is easy to industrialized production, suitable for a wide range of popularization and application.
Description
Technical field
The present invention relates to building material technical field, specifically a kind of light thermal-insulation type hard polyaminoester exterior wall foam material
Material.
Background technology
Common polyurethane material is typically more anti-using the PPG and polyisocyanates that degree of functionality is more, hydroxyl value is high
Answer, the high molecular polymer of cross-linked structure is made.At present, polyurethane is as construction material, and output is increasing, and it has
Have that hardness is big, compressive strength is high, dimensional stability is preferable, light weight, thermal conductivity factor are low, rate of closed hole more than 95%, anticorrosion antiwear
The advantages that good, purposes is very extensive, rubber, plastics, nylon etc. can be replaced, for airport, hotel, building materials, automobile factory, coal
Ore deposit factory, cement plant, condo, villa, landscaping etc..
Now, global heat preserving and insulating material just protects integrated direction hair outside towards efficient, energy-conservation, thin layer, heat-insulated, waterproof
Exhibition, in Development of Novel heat preserving and insulating material and meets structural thermal insulation power-saving technology simultaneously, more emphasizes targetedly exhausted using insulation
Hot material, by standard criterion design and construction, make great efforts to improve insulating efficiency and reduce cost.At present, China large-scale use
Organic insulation material mainly has EPS (polystyrene foam), PS (extruded polystyrene foam) and PU (polyurethane foam), belongs to
Inflammable organic insulation material, biggest advantage be it is light, insulation, thermal insulation it is good；Shortcoming is that fire savety is poor, inflammable easily old
Change and not environmentally.A large amount of toxic smogs are discharged in burning, can make one to be poisoned and suffocate in a short time.
The content of the invention
It is an object of the invention to provide a kind of lightweight good and environmentally friendly with high resistance to compression degree, high degree of drawing, shrinkage
Thermal-insulating type hard polyaminoester exterior wall foamed material.
The present invention solve technical problem technical scheme be：
A kind of light thermal-insulation type hard polyaminoester exterior wall foamed material, it is made up of the raw material foaming of following weight：
Poly- 4,4 '-'-diphenylmethane diisocyanate 30-40 parts, PEPA 30-40 parts, catalyst 2-4 parts, fire retardant 2-4
Part, foaming agent 1-2 parts, foam stabiliser 2-4 parts, silicone oil 3-5 parts, expanded perlite 20-30 parts, talcum powder 15-25 parts, diatom
Native 10-20 parts, deionized water 20-30 parts.
Above-mentioned light thermal-insulation type hard polyaminoester exterior wall foamed material, it is preferable that sent out by the raw material of following weight
It is brewed to：
Poly- 4,35 parts of 4 '-'-diphenylmethane diisocyanate, 35 parts of PEPA, 3 parts of catalyst, 3 parts of fire retardant, foaming agent 2
Part, 3 parts of foam stabiliser, 4 parts of silicone oil, 25 parts of expanded perlite, 20 parts of talcum powder, 15 parts of diatomite, 25 parts of deionized water.
The catalyst is pentamethyl triethylene diamine.
The fire retardant is one or more of mixtures in methyl-phosphoric acid dimethyl ester, ethyl phosphonic acid diethylester.
The foaming agent is fluorine chloralkane.
The foam stabiliser is Polyoxyethylene fatty acyl hydramine, polyacrylate, one kind in polyacrylamide or two
Kind.
The granularity of the expanded perlite is 40-50 mesh, bulk density 90-100kg/m2, thermal conductivity factor is less than
0.025W/m.K。
The preparation method of above-mentioned light thermal-insulation type hard polyaminoester exterior wall foamed material comprises the following steps：
（1）According to the proportion by weight of above-mentioned raw materials；
（2）It is successively that poly- 4,4 '-'-diphenylmethane diisocyanate, PEPA, catalyst, fire retardant, foaming agent, foam is steady
Determine agent, silicone oil, expanded perlite, talcum powder, diatomite, deionized water are added in the material pump of high-pressure spray gun, make in pump is expected
20-25min is stirred with 1100-1300 turns/min speed, each raw material is sufficiently mixed uniformly, obtains product.
The product have the advantages that：Light thermal-insulation type hard polyaminoester exterior wall foamed material of the present invention has intensity
Height, light weight, the characteristics of heat conduction is low, dimensional stability is good, insulation effect is good, wear-and corrosion-resistant is good, also there is efficient resistance
Combustion ability, and CFC (CFC) foaming agent is not used, but fluorine chloralkane has been used as foaming agent, energy-conserving and environment-protective.Adopt
With this product, not only the function in house substantially improves, and can mitigate the deadweight of building, meets the esthetic requirement of people.
In addition, the preparation technology of the present invention is simple, cost is cheap, and equipment requirement is low, production process environmental protection, is easy to industrialized production, fits
In a wide range of popularization and application.
Embodiment
The present invention is further described with reference to embodiments, but the invention is not limited in these embodiments.
Embodiment 1
A kind of light thermal-insulation type hard polyaminoester exterior wall foamed material, it is made up of the raw material foaming of following weight：
Poly- 4,4 '-'-diphenylmethane diisocyanate 30kg, PEPA 30kg, catalyst 2kg, fire retardant 2kg, foaming agent
1kg, foam stabiliser 2kg, silicone oil 3kg, expanded perlite 20kg, talcum powder 15kg, diatomite 10kg, deionized water 20kg.
The catalyst is pentamethyl triethylene diamine.
The fire retardant is methyl-phosphoric acid dimethyl ester.
The foaming agent is fluorine chloralkane.
The foam stabiliser is Polyoxyethylene fatty acyl hydramine.
The granularity of the expanded perlite is 40 mesh, bulk density 90kg/m2, thermal conductivity factor is less than 0.025W/m.K.
The preparation method of above-mentioned light thermal-insulation type hard polyaminoester exterior wall foamed material comprises the following steps：
（1）According to the proportion by weight of above-mentioned raw materials；
（2）It is successively that poly- 4,4 '-'-diphenylmethane diisocyanate, PEPA, catalyst, fire retardant, foaming agent, foam is steady
Determine agent, silicone oil, expanded perlite, talcum powder, diatomite, deionized water are added in the material pump of high-pressure spray gun, make in pump is expected
20min is stirred with 1100 turns/min speed, each raw material is sufficiently mixed uniformly, obtains product.
Embodiment 2
A kind of light thermal-insulation type hard polyaminoester exterior wall foamed material, it is made up of the raw material foaming of following weight：
Poly- 4,4 '-'-diphenylmethane diisocyanate 35kg, PEPA 35kg, catalyst 3kg, fire retardant 3kg, foaming agent
2kg, foam stabiliser 3kg, silicone oil 4kg, expanded perlite 25kg, talcum powder 20kg, diatomite 15kg, deionized water 25kg.
The catalyst is pentamethyl triethylene diamine.
The fire retardant is ethyl phosphonic acid diethylester.
The foaming agent is fluorine chloralkane.
The foam stabiliser is polyacrylate.
The granularity of the expanded perlite is 45 mesh, bulk density 95kg/m2, thermal conductivity factor is less than 0.025W/m.K.
The preparation method of above-mentioned light thermal-insulation type hard polyaminoester exterior wall foamed material comprises the following steps：
（1）According to the proportion by weight of above-mentioned raw materials；
（2）It is successively that poly- 4,4 '-'-diphenylmethane diisocyanate, PEPA, catalyst, fire retardant, foaming agent, foam is steady
Determine agent, silicone oil, expanded perlite, talcum powder, diatomite, deionized water are added in the material pump of high-pressure spray gun, make in pump is expected
22min is stirred with 1200 turns/min speed, each raw material is sufficiently mixed uniformly, obtains product.
Embodiment 3
A kind of light thermal-insulation type hard polyaminoester exterior wall foamed material, it is made up of the raw material foaming of following weight：
Poly- 4,4 '-'-diphenylmethane diisocyanate 40kg, PEPA 40kg, catalyst 4kg, fire retardant 4kg, foaming agent
2kg, foam stabiliser 4kg, silicone oil 5kg, expanded perlite 30kg, talcum powder 25kg, diatomite 20kg, deionized water 30kg.
The catalyst is pentamethyl triethylene diamine.
The fire retardant is methyl-phosphoric acid dimethyl ester, the mixture of ethyl phosphonic acid diethylester.
The foaming agent is fluorine chloralkane.
The foam stabiliser is polyacrylamide.
The granularity of the expanded perlite is 50 mesh, bulk density 100kg/m2, thermal conductivity factor is less than 0.03W/m.K.
The preparation method of above-mentioned light thermal-insulation type hard polyaminoester exterior wall foamed material comprises the following steps：
（1）According to the proportion by weight of above-mentioned raw materials；
（2）It is successively that poly- 4,4 '-'-diphenylmethane diisocyanate, PEPA, catalyst, fire retardant, foaming agent, foam is steady
Determine agent, silicone oil, expanded perlite, talcum powder, diatomite, deionized water are added in the material pump of high-pressure spray gun, make in pump is expected
25min is stirred with 1300 turns/min speed, each raw material is sufficiently mixed uniformly, obtains product.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
- A kind of 1. light thermal-insulation type hard polyaminoester exterior wall foamed material, it is characterised in that：By the raw material of following weight Foaming is made：Poly- 4,4 '-'-diphenylmethane diisocyanate 30-40 parts, PEPA 30-40 parts, catalyst 2-4 parts, fire retardant 2-4 Part, foaming agent 1-2 parts, foam stabiliser 2-4 parts, silicone oil 3-5 parts, expanded perlite 20-30 parts, talcum powder 15-25 parts, diatom Native 10-20 parts, deionized water 20-30 parts.
- 2. the foam stabiliser is one or both of Polyoxyethylene fatty acyl hydramine, polyacrylate, polyacrylamide.
- 3. light thermal-insulation type hard polyaminoester exterior wall foamed material according to claim 1, it is characterised in that：By following heavy The raw material foaming of amount part proportioning is made：Poly- 4,35 parts of 4 '-'-diphenylmethane diisocyanate, 35 parts of PEPA, 3 parts of catalyst, 3 parts of fire retardant, foaming agent 2 Part, 3 parts of foam stabiliser, 4 parts of silicone oil, 25 parts of expanded perlite, 20 parts of talcum powder, 15 parts of diatomite, 25 parts of deionized water.
- 4. light thermal-insulation type hard polyaminoester exterior wall foamed material according to claim 1, it is characterised in that：The catalysis Agent is pentamethyl triethylene diamine.
- 5. light thermal-insulation type hard polyaminoester exterior wall foamed material according to claim 1, it is characterised in that：It is described fire-retardant Agent is the mixture of one or both of methyl-phosphoric acid dimethyl ester, ethyl phosphonic acid diethylester.
- 6. light thermal-insulation type hard polyaminoester exterior wall foamed material according to claim 1, it is characterised in that：The foaming Agent is fluorine chloralkane.
- 7. light thermal-insulation type hard polyaminoester exterior wall foamed material according to claim 1, it is characterised in that：The expansion The granularity of perlite is 40-50 mesh, bulk density 90-100kg/m2, thermal conductivity factor is less than 0.025W/m.K.
- 8. light thermal-insulation type hard polyaminoester exterior wall foamed material according to claim 1, it is characterised in that：Its preparation side Method comprises the following steps：（1）According to the proportion by weight of above-mentioned raw materials；（2）It is successively that poly- 4,4 '-'-diphenylmethane diisocyanate, PEPA, catalyst, fire retardant, foaming agent, foam is steady Determine agent, silicone oil, expanded perlite, talcum powder, diatomite, deionized water are added in the material pump of high-pressure spray gun, make in pump is expected 20-25min is stirred with 1100-1300 turns/min speed, each raw material is sufficiently mixed uniformly, obtains product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710794290.5A CN107488250A (en) | 2017-09-06 | 2017-09-06 | Light thermal-insulation type hard polyaminoester exterior wall foamed material |
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| CN201710794290.5A CN107488250A (en) | 2017-09-06 | 2017-09-06 | Light thermal-insulation type hard polyaminoester exterior wall foamed material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936210A (en) * | 2017-12-07 | 2018-04-20 | 遂宁市明川零贰零科技有限公司 | Light thermal-insulation type hard polyaminoester exterior wall foamed material |
| CN114106552A (en) * | 2021-12-08 | 2022-03-01 | 中国农业科学院都市农业研究所 | Environment-friendly container type heat insulation material for farm and processing technology |
| WO2022106493A1 (en) * | 2020-11-19 | 2022-05-27 | Basf Se | Flame-retardant polyurethane foam system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900132A (en) * | 2006-07-13 | 2007-01-24 | 国营万峰无线电厂 | High strength hard polyurethane foam plastics and its preparing method |
| CN101487298A (en) * | 2009-01-19 | 2009-07-22 | 夏良强 | Production method for rigid foam polyurethane composite heat-conservation board |
| CN102898607A (en) * | 2012-09-07 | 2013-01-30 | 汤燕 | Modified polyurethane rigid foam material and preparation method thereof |
| CN106188494A (en) * | 2016-08-03 | 2016-12-07 | 南宁可煜能源科技有限公司 | Hard polyaminoester exterior wall foamed materials |
-
2017
- 2017-09-06 CN CN201710794290.5A patent/CN107488250A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900132A (en) * | 2006-07-13 | 2007-01-24 | 国营万峰无线电厂 | High strength hard polyurethane foam plastics and its preparing method |
| CN101487298A (en) * | 2009-01-19 | 2009-07-22 | 夏良强 | Production method for rigid foam polyurethane composite heat-conservation board |
| CN102898607A (en) * | 2012-09-07 | 2013-01-30 | 汤燕 | Modified polyurethane rigid foam material and preparation method thereof |
| CN106188494A (en) * | 2016-08-03 | 2016-12-07 | 南宁可煜能源科技有限公司 | Hard polyaminoester exterior wall foamed materials |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936210A (en) * | 2017-12-07 | 2018-04-20 | 遂宁市明川零贰零科技有限公司 | Light thermal-insulation type hard polyaminoester exterior wall foamed material |
| WO2022106493A1 (en) * | 2020-11-19 | 2022-05-27 | Basf Se | Flame-retardant polyurethane foam system |
| CN114106552A (en) * | 2021-12-08 | 2022-03-01 | 中国农业科学院都市农业研究所 | Environment-friendly container type heat insulation material for farm and processing technology |
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