CN104086946A - Preparation method of micro-capsule fly ash floating bead toughened and reinforced phenolic foam - Google Patents
Preparation method of micro-capsule fly ash floating bead toughened and reinforced phenolic foam Download PDFInfo
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- CN104086946A CN104086946A CN201410314214.6A CN201410314214A CN104086946A CN 104086946 A CN104086946 A CN 104086946A CN 201410314214 A CN201410314214 A CN 201410314214A CN 104086946 A CN104086946 A CN 104086946A
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Abstract
The invention discloses a preparation method of micro-capsule fly ash floating bead toughened and reinforced phenolic foam. The method comprises the following steps: treating a fly ash floating bead by using a silane coupling agent, and then wrapping the fly ash floating bead by using a polyurethane prepolymer to obtain a micro-capsule fly ash floating bead; then performing foaming reaction with raw materials such as A-stage phenolic resin, a surfactant, a foaming agent and a catalyst to obtain the toughened and reinforced phenolic foam. The surface of the prepared micro-capsule fly ash floating bead disclosed by the invention contains relatively more isocyanate active groups, thus the micro-capsule fly ash floating bead can be used for reacting with matrix resin in the foaming process to improve the compatibility with the phenolic foam; the micro-capsule fly ash floating bead has an reinforcement effect on the phenolic foam; the introduction of flexible long chains in the polyurethane prepolymer can be used for improving a friable structure of the phenolic foam and improving the toughness, and only can influence the excellent combustion characteristics of the phenolic foam to the lowest extent.
Description
Technical field
The invention belongs to foam material technical field, be specifically related to the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float.
Background technology
The building thermal insulation material that phenol formaldehyde foam is just being widely used with other is compared as polystyrene, polyvinyl chloride, polyurethane foam etc., its resistance toheat is good, nonflammable, the amount of being fuming is few, fire safety evaluating performance is high, and the low smokiness of phenol formaldehyde foam and excellent flame retardant properties are in the architectural great utility value having as safety heat-preserving material.Visible, in building trade, phenolic foamed plastics obtains the heat-insulating heat-preserving material as desirable to apply more widely.But the fragility of phenol formaldehyde foam is large, intensity is little, poor mechanical property, be difficult to meet the demand of requirement and the industrial development of site operation.
Fly ash float is the hollow glass micropearl of the thin-walled that extracts in the discarded flyash of power plant, is canescence, and the thin hollow of wall is lightweight.Main chemical compositions is the oxide compound of silicon, aluminium, is high refractory substance, floats the thin hollow of pearl wall, in cavity, is partial vacuum, and thermal conduction is atomic extremely slowly.So float not only light weight of pearl, and heat insulating excellent (thermal conductivity normal temperature 0.08-0.1), hardness is large, intensity is high.The enhancement mechanism of floating pearl is similar to glass microballon, can improve the intensity of foam materials.Hollow glass microbead existing research aspect raising polyurethane foam, phenol formaldehyde foam equal strength.It is comonomer that Chinese patent CN103087344A be take phenol and formaldehyde, hollow glass microbead (add-on 5%-25%) is strongthener, prepare the phenol formaldehyde foam that hollow glass microbead strengthens, foam compression intensity, flexural strength, the shock strength of preparation are improved, and can not reduce the flame resistant performance of phenol formaldehyde foam.But fly ash float utilization ratio is low at present, is not having relevant document or patent aspect the enhancing of phenolic foamed plastics.Fly ash float belongs to polar water insoluble substance, and the surface compatability in organic foam is poor, and too much filling can cause foam materials mechanical properties decrease.
The benzene ring structure that contains rigidity in the structure of phenol formaldehyde foam, foam brittleness is large, poor impact resistance, current toughening modifying is mainly added the outer toughner of non-response type and added response type toughner by blend.Chemistry is toughness reinforcing to be paid attention to because toughening effect is good.Chinese patent CN101565541A is by foaming the prepolymer of alkalescent phenol resin, isocyanic ester and polyether glycol to prepare polyurethane/phenolic aldehyde foam thermal insulation material.In the composite foam of preparation, polyurethane component is greater than the component of phenol formaldehyde foam, and mechanical property is excellent, but due to the minimizing of phenolic aldehyde rigid structure, its combustionproperty is poor, can not keep the excellent performance of burning of phenol formaldehyde foam itself.
Summary of the invention
The object of the invention is to solve phenol formaldehyde foam intensity little, the problem that fragility is large, the invention provides the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of fly ash float of a kind of polyurethane prepolymer parcel.Utilize fly ash float to strengthen phenol formaldehyde foam, improve its mechanical property; In addition, the introducing of the polyurethane prepolymer that contains long flexible chain can be carried out phenol formaldehyde foam toughness reinforcing, reduces fragility, and the combustioncharacteristics that affects phenol formaldehyde foam excellence of minimum degree.
The object of the invention is to be achieved through the following technical solutions:
A preparation method for the toughness reinforcing enhancing phenol formaldehyde foam of microcapsule fly ash float, is characterized in that: comprise the following steps:
The first step: prepare modified coal ash and float pearl
Dry fly ash float is joined in the aqueous ethanolic solution of mass concentration 75%-95%, then add silane coupling agent, after stirring, be warming up to 30-50
oc processes 60-90min; Wherein, silane coupling agent consumption is fly ash float quality 1%-2%;
Second step: polyurethane preformed polymer
The tetrahydrofuran solution that adds polyoxyethylene glycol (PEG) in the solution of tolylene diisocyanate (TDI) and tetrahydrofuran (THF), is warming up to 60-80
ounder C, stir 6-8h, and obtain polyurethane prepolymer except desolventizing under reduced pressure; Wherein, the mol ratio of tolylene diisocyanate and polyoxyethylene glycol is 3-5:1;
The 3rd step: prepare microcapsule fly ash float
The modified coal ash of preparing in the first step floats and in pearl, adds dispersion agent, then adds modified coal ash to float the polyurethane prepolymer of pearl quality 10%-30%, regulates pH to 8-9, at 60-80 with NaOH solution
oc is incubated 0.5-2h, the dry coated fly ash float of urethane that obtains; Wherein, the consumption of dispersion agent is the 2-4% of fly ash float quality;
The 4th step: preparation strengthens toughening metlbond foam
In 100 mass parts resol, add the above-mentioned microcapsule fly ash float of 5 ~ 40 mass parts, high-speed stirring obtains uniform mixture, then adds successively tensio-active agent, whipping agent, finally adds catalyzer, and strong stirring injects mould after evenly, at 60-80
othe curing molding that foams under C, obtains the phenol formaldehyde foam of toughness reinforcing enhancing.
The particle diameter of the fly ash float described in the first step is that 100-180 μ m, apparent density are 0.3-0.5g/cm
3.Fly ash float is polar water insoluble substance, poor with the consistency of organic foam, and too much filling can cause foam materials mechanical properties decrease.
Silane coupling agent described in the first step is γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane (KH560).The object of the first step modification is that after modification, activity hydroxy is contained on the surface of fly ash float, can in the process of parcel, react on fly ash float surface with polyurethane prepolymer, makes polyurethane prepolymer form thicker integument in bead surface.
The molecular weight of the polyoxyethylene glycol described in second step is 200-1000.The molecular chain length of the polyoxyethylene glycol of different molecular weight is different, different to the toughening effect of phenol formaldehyde foam.
Dispersion agent described in the 3rd step is a kind of in gelatin and methylcellulose gum.The object of the 3rd step encapsulation is to improve the consistency of fly ash float and Organic Foam Material, and in addition, the polyurethane flexible long-chain of fly ash float surface parcel can improve the rigid structure of phenol formaldehyde foam, improves phenol formaldehyde foam toughness.
Microcapsule fly ash float, in the process of the foaming of phenol formaldehyde foam, has played the effect of nucleator to a certain extent, limits the size of abscess, has reduced the defect of material internal.When phenol formaldehyde foam is subject to used time of doing of external force, by the supporting role of fly ash float, make material can bear the effect of the compressive load larger than the foams that do not strengthen, thereby make abscess be difficult for stressed unstability and be out of shape.In addition, microcapsule powder coal ash floats the coated polyurethane prepolymer of bead surface and contains isocyanate reactive group, can with resol in hydroxyl react fast, form cross-linked network system with the phenolic aldehyde molecule of rigidity, long flexible chain is incorporated in foamy structure, fundamentally improve the rigid structure of phenol formaldehyde foam, toughness is improved.
Resol described in the 4th step is resole, 25
oviscosity during C is 2500-3000 mPa.s, solid content>=75%; Described tensio-active agent is silicone oil, and consumption is the 3-5 wt% of resol quality; Described whipping agent is pentane, and consumption is the 9-12 wt% of resol quality; Described catalyzer is the mixing solutions of tosic acid, water and the phosphoric acid of mass ratio 2:2:1, and consumption is the 10-14wt% of resol quality, wherein, and phosphorus acid content>=85% of phosphoric acid solution used.
Effective effect of the present invention is: compared with prior art, the present invention is by the fly ash float extracting in industrial waste flyash is carried out to chemical modification, and preparation intensity is high, the phenol formaldehyde foam of good toughness.The filling of fly ash float has improved compressive strength, the flexural strength of phenol formaldehyde foam effectively; The polyurethane prepolymer that microcapsule powder coal ash floats the coated long flexible chain of bead surface is improved the shock strength of phenol formaldehyde foam, and toughness obtains modification; In addition, it is not obvious that the combustionproperty of phenol formaldehyde foam reduces, the impact of less degree the combustioncharacteristics of phenol formaldehyde foam excellence.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described
The modified coal ash adopting in embodiment and comparative example floats pearl and is silane coupler modified fly ash float, employing following steps preparation: it is in 90% aqueous ethanolic solution that dry fly ash float is joined to mass concentration, the silane coupling agent KH560 that adds again fly ash float quality 2%, is warming up to 50 after stirring
oc processes 90min.
The resole that alkalescent phenol resin in embodiment and comparative example provides for material of construction company limited of Tengzhou Huahai; Silicone oil is SD-103 silicone oil.
embodiment 1
Polyurethane preformed polymer: add 20g PEG-200 and 50ml tetrahydrofuran solution in the solution of 69.6gTDI and 100ml tetrahydrofuran (THF), be warming up to 60
oc stirs 6h, and obtains polyurethane prepolymer except desolventizing under reduced pressure.
Prepare microcapsule fly ash float: in 100g modified coal ash floats pearl, add 2g gelatin, then add 10g polyurethane prepolymer, with NaOH solution, regulate pH to 8,80
oc is incubated 0.5h, the dry coated fly ash float of urethane that obtains.
Prepare phenol formaldehyde foam: in 100g resole, add the above-mentioned microcapsule fly ash float of 5g, high-speed stirring obtains uniform mixture, add successively again 3g silicone oil, 9g pentane, adding the mass ratio of mixing solutions 10g(tosic acid, water and the phosphoric acid of tosic acid, water and phosphoric acid is 2:2:1 again, lower same), strong stirring is the rear mould that injects evenly, 60
othe curing molding that foams under C, obtains the phenol formaldehyde foam of toughness reinforcing enhancing.
embodiment 2
Polyurethane preformed polymer: add 60g PEG-600 and 50ml tetrahydrofuran solution in 69.6gTDI and 100ml tetrahydrofuran solution, be warming up to 70
oc stirs 7h, and obtains polyurethane prepolymer except desolventizing under reduced pressure.
Prepare microcapsule fly ash float: in 100g modified coal ash floats pearl, add 2g gelatin, then add 20g polyurethane prepolymer, with NaOH solution, regulate pH to 8,80
oc is incubated 1h, the dry coated fly ash float of urethane that obtains.
Prepare phenol formaldehyde foam: in 100g resole, add the above-mentioned microcapsule fly ash float of 10g, high-speed stirring obtains uniform mixture, add successively again 4g silicone oil, 10g pentane, add again tosic acid, the mixing solutions 12g of water and phosphoric acid, strong stirring is the rear mould that injects evenly, 70
othe curing molding that foams under C, obtains the phenol formaldehyde foam of toughness reinforcing enhancing.
embodiment 3
Polyurethane preformed polymer: add 100g PEG-1000 and 50ml tetrahydrofuran solution in 69.6gTDI and 100ml tetrahydrofuran solution, be warming up to 70
oc stirs 7h, and obtains polyurethane prepolymer except desolventizing under reduced pressure.
Prepare microcapsule fly ash float: in 100g modified coal ash floats pearl, add 3g gelatin, then add 30g polyurethane prepolymer, with NaOH solution, regulate pH to 9,80
oc is incubated 2h, the dry coated fly ash float of urethane that obtains.
Prepare phenol formaldehyde foam: in 100g resole, add the above-mentioned microcapsule fly ash float of 20g, high-speed stirring obtains uniform mixture, add successively again 4g silicone oil, 10g pentane, add again tosic acid, the mixing solutions 12g of water and phosphoric acid, strong stirring is the rear mould that injects evenly, 80
othe curing molding that foams under C, obtains the phenol formaldehyde foam of toughness reinforcing enhancing.
embodiment 4
Polyurethane preformed polymer: add 20g PEG-200 and 50ml tetrahydrofuran solution in 69.6gTDI and 100ml tetrahydrofuran solution, be warming up to 80
oc stirs 7h, and obtains polyurethane prepolymer except desolventizing under reduced pressure.
Prepare microcapsule fly ash float: in the dry fly ash float of 100g, add 4g gelatin, then add 30g polyurethane prepolymer, with NaOH solution, regulate pH to 9,80
oc is incubated 2h, the dry coated fly ash float of urethane that obtains.
Prepare phenol formaldehyde foam: in 100g resole, add the above-mentioned microcapsule fly ash float of 30g, high-speed stirring obtains uniform mixture, add successively again 4g silicone oil, 10g pentane, add again tosic acid, the mixing solutions 12g of water and phosphoric acid, strong stirring is the rear mould that injects evenly, 80
othe curing molding that foams under C, obtains the phenol formaldehyde foam of toughness reinforcing enhancing.
embodiment 5
Concrete steps are identical with embodiment 4, and different 20g PEG-200 while being polyurethane preformed polymer are substituted by 60g PEG-600.
embodiment 6
Concrete steps are identical with embodiment 4, and different 20g PEG-200 while being polyurethane preformed polymer are substituted by 100g PEG-1000.
embodiment 7
Polyurethane preformed polymer: add 100g PEG-1000 and 50ml tetrahydrofuran solution in 69.6gTDI and 100ml tetrahydrofuran solution, be warming up to 70
oc stirs 8h, and obtains polyurethane prepolymer except desolventizing under reduced pressure.
Prepare microcapsule fly ash float: in the dry fly ash float of 100g, add 4g methylcellulose gum, then add 30g polyurethane prepolymer, with NaOH solution, regulate pH to 9,80
oc is incubated 2h, the dry coated fly ash float of urethane that obtains.
Prepare phenol formaldehyde foam: in 100g resole, add the above-mentioned microcapsule fly ash float of 40g, high-speed stirring obtains uniform mixture, add successively again 5g silicone oil, 12g pentane, add again tosic acid, the mixing solutions 14g of water and phosphoric acid, strong stirring is the rear mould that injects evenly, 80
othe curing molding that foams under C, obtains the phenol formaldehyde foam of toughness reinforcing enhancing.
comparative example 1
Prepare phenol formaldehyde foam: in 100g resole, add successively 4g silicone oil, 10g pentane, then add tosic acid, and the mixing solutions 12g of water and phosphoric acid, strong stirring is the rear mould that injects evenly, 80
othe curing molding that foams under C, obtains phenol formaldehyde foam.
comparative example 2
Prepare phenol formaldehyde foam: in 100g resole, add 30g modified coal ash to float pearl, high-speed stirring obtains uniform mixture, then add successively 4g silicone oil, 10g pentane, then add tosic acid, the mixing solutions 12g of water and phosphoric acid, strong stirring is the rear mould that injects evenly, 80
othe curing molding that foams under C, the phenol formaldehyde foam being enhanced.
Phenolic foamed plastics prepared by embodiment 1-7 and comparative example 1-2 is according to its compression performance of standard testing, flexural strength, shock strength, and oxygen index etc., testing method is as follows:
The apparent density of rigid foam is tested according to GB/T 6343-2009.Compression performance is tested according to GB/T 8813-2008.Bending property is tested according to GB/T 8812-2007.Shock strength is tested according to GB/T 1043-1993.Limiting oxygen index(LOI) (LOI) is to test on HC-2 type oxygen index instrument (Chinese Jiangning instrumental analysis company produce) according to ASTM D2863 standard.
After tested, the salient features of the polyurethane foam of embodiment 1-7 and comparative example gained is as shown in the table
| Performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Comparative example 1 | Comparative example 2 |
| Density g/cm 3 | 37.9 | 38.5 | 42.1 | 44.6 | 47.1 | 46.3 | 48.9 | 37.7 | 46.1 |
| Compressive strength MPa | 0.157 | 0.192 | 0.214 | 0.223 | 0.247 | 0.278 | 0.274 | 0.155 | 0.219 |
| Flexural strength MPa | 0.213 | 0.271 | 0.290 | 0.311 | 0.328 | 0.340 | 0.327 | 0.202 | 0.303 |
| Shock strength KJ/m 2 | 2.17 | 2.89 | 3.36 | 3.67 | 4.32 | 4.54 | 4.08 | 1.42 | 2.21 |
| Oxygen index % | 47 | 44 | 44 | 44 | 43 | 43 | 42 | 48 | 49 |
Comparative example 1 and comparative example 2 the performance test results contrasts are known, and coupling agent modified fly ash float can improve the intensity of phenol formaldehyde foam.Embodiment 1-7 and comparative example 2 contrasts are known, through the fly ash float of polyurethane prepolymer parcel, not only can improve the intensity (compressive strength and flexural strength are improved) of phenol formaldehyde foam, its shock strength obviously increases than the foam that not prepared by the fly ash float of parcel, and toughness is improved.
Embodiment 4,5,6 contrasts are known, and the compressive strength of the modified phenolic foam of being prepared by the polyoxyethylene glycol (PEG-1000) of higher molecular weight, flexural strength and shock strength are best, illustrate that the introducing of longer flexible chain has effectively improved the firm type structure of phenol formaldehyde foam, increase toughness.
But the introducing of more long flexible chain, make the oxygen index of phenol formaldehyde foam in a slight decrease, but it is not obvious to decline, and is still greater than 40.0%, is better than common organic foam, is nonflammable material.
Claims (9)
1. a preparation method for the toughness reinforcing enhancing phenol formaldehyde foam of microcapsule fly ash float, is characterized in that: comprise the following steps:
The first step: prepare modified coal ash and float pearl
Dry fly ash float is joined in the aqueous ethanolic solution of mass concentration 75%-95%, then add silane coupling agent, after stirring, be warming up to 30-50
oc processes 60-90min; Wherein, silane coupling agent consumption is the 1%-2% of fly ash float quality;
Second step: polyurethane preformed polymer
The tetrahydrofuran solution that adds polyoxyethylene glycol in tolylene diisocyanate and tetrahydrofuran solution, is warming up to 60-80
ounder C, stir 6-8h, under reduced pressure, remove desolventizing and obtain polyurethane prepolymer; Wherein, the mol ratio of tolylene diisocyanate and polyoxyethylene glycol is 3-5:1;
The 3rd step: prepare microcapsule fly ash float
The modified coal ash of preparing in the first step floats and in pearl, adds dispersion agent, then adds modified coal ash to float the polyurethane prepolymer of pearl quality 10%-30%, regulates pH to 8-9, at 60-80 with NaOH solution
oc is incubated 0.5-2h, the dry coated fly ash float of urethane that obtains; Wherein, the consumption of dispersion agent is the 2%-4% that modified coal ash floats pearl quality;
The 4th step: preparation strengthens toughening metlbond foam
In 100 mass parts resol, add the above-mentioned microcapsule fly ash float of 5 ~ 40 mass parts, high-speed stirring obtains uniform mixture, then adds successively tensio-active agent, whipping agent, finally adds catalyzer, and strong stirring injects mould after evenly, at 60-80
othe curing molding that foams under C, obtains the phenol formaldehyde foam of toughness reinforcing enhancing.
2. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, is characterized in that: the particle diameter of the fly ash float described in the first step is 100-180 μ m, and apparent density is 0.3-0.5 g/cm
3.
3. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, is characterized in that: the silane coupling agent described in the first step is γ-(2,3-epoxy the third oxygen) propyl trimethoxy silicane.
4. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, is characterized in that: the molecular weight of the polyoxyethylene glycol described in second step is 200-1000.
5. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, is characterized in that: the dispersion agent described in the 3rd step is a kind of in gelatin and methylcellulose gum.
6. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, is characterized in that: the resol described in the 4th step is resole, 25
oviscosity during C is 2500-3000 mPa.s, solid content>=75%.
7. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, is characterized in that: the tensio-active agent described in the 4th step is silicone oil, and consumption is the 3-5 wt% of resol quality.
8. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, is characterized in that: the whipping agent described in the 4th step is pentane, and consumption is the 9-12 wt% of resol quality.
9. the preparation method of the toughness reinforcing enhancing phenol formaldehyde foam of a kind of microcapsule fly ash float according to claim 1, it is characterized in that: the catalyzer described in the 4th step is the mixing solutions of tosic acid, water and the phosphoric acid of mass ratio 2:2:1, and consumption is the 10-14wt% of resol quality; Wherein, phosphorus acid content >=85% of phosphoric acid solution used.
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| CN201410314214.6A CN104086946B (en) | 2014-07-03 | A kind of preparation method of microcapsules fly ash float toughening enhancing phenol formaldehyde foam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410314214.6A CN104086946B (en) | 2014-07-03 | A kind of preparation method of microcapsules fly ash float toughening enhancing phenol formaldehyde foam |
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| CN104086946A true CN104086946A (en) | 2014-10-08 |
| CN104086946B CN104086946B (en) | 2018-08-31 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116425A (en) * | 2016-06-21 | 2016-11-16 | 安徽天锦云漆业有限公司 | A kind of crack-resistant heat-insulation wall construction material and preparation method thereof |
| CN106396482A (en) * | 2016-08-31 | 2017-02-15 | 中国电建集团成都勘测设计研究院有限公司 | Method for preparing high-strength heat insulating material for hydraulic concrete |
| CN106396483A (en) * | 2016-08-31 | 2017-02-15 | 中国电建集团成都勘测设计研究院有限公司 | High-strength heat insulating material for hydraulic concrete |
| CN107418136A (en) * | 2017-06-22 | 2017-12-01 | 合肥永泰新型建材有限公司 | A kind of composite foam insulation material and preparation method thereof |
| CN107502092A (en) * | 2017-07-21 | 2017-12-22 | 阜南县大自然工艺品有限公司 | A kind of bamboo handicraft product of reversible temperature induced color changing |
| CN110591158A (en) * | 2019-09-24 | 2019-12-20 | 浙江华峰新材料股份有限公司 | Modified core-shell type aluminum oxide and polyurethane composite material, and preparation method and application thereof |
| CN110746574A (en) * | 2019-10-30 | 2020-02-04 | 海鹰企业集团有限责任公司 | Flame-retardant polyurethane rigid foam plastic prepared based on microencapsulated fly ash |
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| US20070083003A1 (en) * | 2005-10-11 | 2007-04-12 | Gupta Laxmi C | Water curable polyurethane compositions and uses thereof |
| CN101565541A (en) * | 2008-04-25 | 2009-10-28 | 北京化工大学 | Method for preparing polyurethane/phenolic aldehyde foam thermal insulation material |
| CN103087344A (en) * | 2013-01-18 | 2013-05-08 | 南京航空航天大学 | Preparation method of hollow glass microbead-reinforced phenolic foam composite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070083003A1 (en) * | 2005-10-11 | 2007-04-12 | Gupta Laxmi C | Water curable polyurethane compositions and uses thereof |
| CN101565541A (en) * | 2008-04-25 | 2009-10-28 | 北京化工大学 | Method for preparing polyurethane/phenolic aldehyde foam thermal insulation material |
| CN103087344A (en) * | 2013-01-18 | 2013-05-08 | 南京航空航天大学 | Preparation method of hollow glass microbead-reinforced phenolic foam composite material |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116425A (en) * | 2016-06-21 | 2016-11-16 | 安徽天锦云漆业有限公司 | A kind of crack-resistant heat-insulation wall construction material and preparation method thereof |
| CN106116425B (en) * | 2016-06-21 | 2018-01-12 | 安徽天锦云漆业有限公司 | A kind of crack-resistant heat-insulation wall construction material and preparation method thereof |
| CN106396482A (en) * | 2016-08-31 | 2017-02-15 | 中国电建集团成都勘测设计研究院有限公司 | Method for preparing high-strength heat insulating material for hydraulic concrete |
| CN106396483A (en) * | 2016-08-31 | 2017-02-15 | 中国电建集团成都勘测设计研究院有限公司 | High-strength heat insulating material for hydraulic concrete |
| CN107418136A (en) * | 2017-06-22 | 2017-12-01 | 合肥永泰新型建材有限公司 | A kind of composite foam insulation material and preparation method thereof |
| CN107502092A (en) * | 2017-07-21 | 2017-12-22 | 阜南县大自然工艺品有限公司 | A kind of bamboo handicraft product of reversible temperature induced color changing |
| CN110591158A (en) * | 2019-09-24 | 2019-12-20 | 浙江华峰新材料股份有限公司 | Modified core-shell type aluminum oxide and polyurethane composite material, and preparation method and application thereof |
| CN110591158B (en) * | 2019-09-24 | 2021-10-08 | 浙江华峰新材料有限公司 | Modified core-shell type aluminum oxide and polyurethane composite material, and preparation method and application thereof |
| CN110746574A (en) * | 2019-10-30 | 2020-02-04 | 海鹰企业集团有限责任公司 | Flame-retardant polyurethane rigid foam plastic prepared based on microencapsulated fly ash |
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