CN1613638A - Flame retardant phenolic resin foamed sandwiching material and its preparation - Google Patents
Flame retardant phenolic resin foamed sandwiching material and its preparation Download PDFInfo
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- CN1613638A CN1613638A CN 200310113967 CN200310113967A CN1613638A CN 1613638 A CN1613638 A CN 1613638A CN 200310113967 CN200310113967 CN 200310113967 CN 200310113967 A CN200310113967 A CN 200310113967A CN 1613638 A CN1613638 A CN 1613638A
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Abstract
An incombustible sandwiched material for the thermal insulation of wall, ceiling, ship, chemical container, pipeline, etc is composed of 5 layers including surficial aluminium foil layers or aluminium foil-fibre cloth layers and sandwich layers for phenolic foam. Its preparing process includes such steps as synthesizing the foaming phenolic resin, preparing phenolic foam, mixing foaming phenolic resin, surfactant and flame retardant, adding foaming agent and solidifying agent, foaming solidifying, making the sandwich material, surface treating, coating, cutting, adhering, drying and trimming.
Description
(1) technical field
The present invention relates to a kind of A level phenol formaldehyde foam compound sandwich material and preparation method thereof that do not fire.
(2) background technology
Thermal conductivity factor is low owing to having, fire protecting performance better for the phenolic foam sandwich material, put advantages such as cigarette is few, nontoxic, water absorption rate is low, floride-free foaming when burning, and has been widely used in the building air conditioning utilidor.But require higher occasion for fire protecting performance, no longer suitable as luxurious hotel, skyscraper, boats and ships, naval vessels etc.
No. 02108279 patent application of CN discloses a kind of aluminium foil-phenolic foam sandwich composite plate and production technology thereof, and its used resistance incendiary agent is less, and flame retardant effect is not obvious, and the aluminium foil-phenolic foam sandwich composite plate of being produced can only reach difficult combustion B1 level.US 4,681, and No. 902 patents are made fire retardant with halogenated diphenyl ether (70%W/W) and organic phosphorus compound (30%W/W) mixing, and addition is the per 100 parts of resins of 0.5-20 part, and this organic fire-retardant can be emitted poisonous and hazardous hydrogen halide when high-temp combustion.US 4,419, and No. 460 patents improve the rate of closed hole of phenol formaldehyde foam with hydrated alumina, and its addition is 2%-15%, and more preferably 5%-10% facts have proved, the anti-flammability of gained foam is not ideal enough, does not reach not fire the A grade standard.
(3) summary of the invention
The objective of the invention is to overcome above technological deficiency, provide a kind of manufacture craft simple, with low cost, fire protecting performance can reach phenol formaldehyde foam compound sandwich material of GB GB8624 A level and preparation method thereof.
The said phenolic foam sandwich material that do not fire of the present invention is formed by 5 layers, and surface layer is aluminium foil or aluminium foil fiber cloth, and sandwich layer is a phenol formaldehyde foam, is tack coat between surface layer and the sandwich layer.
The surface layer aluminium foil is preferably the embossing aluminium foil, and aluminium foil surface can be provided with corrosion-inhibiting coating.
The component of sandwich layer phenol formaldehyde foam and content by weight are: 100 parts of expandable phenolic resins, 1～5 part in surfactant, 10～300 parts of fire retardants, 1～10 part of blowing agent, 5～25 parts in curing agent.
The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: (1.3～3.0), preferred 1: (1.6～2.5), viscosity is 1000～20000cp under the normal temperature.
Said surfactant is selected from tween series, at least a in castor oil polyoxyethylene ether series or the organosilicon series.
Said fire retardant is the environmental protection inorganic fire retardant, is selected from aluminium hydroxide (for example micron order hydrated alumina ATH), magnesium hydroxide, cenosphere, at least a in antimony oxide or the borate etc.
Said blowing agent is a low boiling alkane, is selected from benzinum, pentane, at least a in hexane or the carrene etc.
Said curing agent is middle strong acid, is selected from phosphoric acid, boric acid, benzene sulfonic acid, at least a in p-methyl benzenesulfonic acid or the xylene monosulfonic acid etc.
Compound stirs the back at 60～80 ℃ of following foamed solidifications.
The density of said phenol formaldehyde foam is 60～250kg/m
3
The said processing step that does not fire the phenolic foam sandwich material preparation method of the present invention is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: (1.3～3.0) are preferably 1: (1.6～2.5) are catalyst (pH=8～9) with alkali, react 2～4 hours course of reaction refractive index (n down at 70～100 ℃
D) follow the tracks of, when being 1.50～1.52, refractive index adds modifier, can be selected from urea, dicyandiamide, melamine, at least a in polyvinyl alcohol or the polyethylene glycol etc. adds acid and is neutralized to pH=6-7 when being cooled to below 60 ℃ again, decompression dehydration to viscosity is 1000～20000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 60～250kg/m
3, be preferably 70～150kg/m
3
The component of phenol formaldehyde foam and content by weight are:
1) expandable phenolic resin is 100 parts, and viscosity is 1000～20000CP, is preferably 3000～15000CP (normal temperature).
2) surfactant is 1～5 part, and is optional from tween series (for example Tween 80), castor oil polyoxyethylene ether series (for example EL-40) or the silicon foams stabilizing agent is a kind of.
3) fire retardant is 10～300 parts, can be selected from aluminium hydroxide (micron order hydrated alumina ATH), magnesium hydroxide, cenosphere, at least a in antimony oxide or the borate etc.
4) blowing agent is 1～10 part, can be selected from benzinum, pentane, at least a in hexane or the carrene etc.
5) curing agent is 5～25 parts, can be selected from phosphoric acid, boric acid, benzene sulfonic acid, at least a in p-methyl benzenesulfonic acid or the xylene monosulfonic acid etc.
Its step is as follows:
1) by above-mentioned prescription expandable phenolic resin, surfactant, fire retardant are mixed;
2) blowing agent is joined in the above-mentioned compound;
3) again curing agent is joined in the above-mentioned compound, place 60～80 ℃ of foamed solidifications.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 1～10 μ m.
After above-mentioned phenol phenol formaldehyde foam cut into required size, fit with glue and aluminium foil or aluminium foil fiber cloth, drying is after the deburring processing promptly obtains phenolic foam sandwich material of the present invention.
Product of the present invention is through the check of national fire-proof construction material quality supervision and test center, and its assay is as shown in the table.</entry></row></tbody></tgroup></table></tables>
Assay shows that its every index of resulting material all meets the regulation requirement of incombustible material.Judge that by GB GB8624-1997 this material combustion performance reaches GB8624 A level composite material.
The present invention mainly adopts environmental protection inorganic fire retardant such as aluminium hydroxide (micron order hydrated alumina ATH), magnesium hydroxide, cenosphere etc., not only have fire-retardant and the smoke elimination effect, also has the effect that inhibition is fuming and hydrogen halides generates, that fire retardant itself also has is nontoxic, good stability, non-volatile, do not produce characteristics such as corrosive gas, aboundresources and low price, be a kind of environment-friendly fire retardant.Gained material of the present invention has excellent insulation, heat insulation, sound insulation value, will be widely used in the heat-insulation and heat-preservation of wall thermal insulating, heat insulation furred ceiling, boats and ships, naval vessels and pressure vessels for the chemical industry and pipeline.In energy savings, also greatly reduce the hidden danger that fire brings when cutting down the consumption of energy.
(4) specific embodiment
Embodiment 1
Do not fire the phenolic foam sandwich material and form by 5 layers, surface layer is an aluminium foil, and sandwich layer is a phenol formaldehyde foam, is tack coat between surface layer and the sandwich layer.The surface layer aluminium foil is selected the embossing aluminium foil for use, and aluminium foil surface band corrosion-inhibiting coating.
The component of sandwich layer phenol formaldehyde foam and content by weight are: expandable phenolic resin 100, surfactant is selected " Tween 80 " 3 for use, fire retardant is selected aluminium hydroxide 100 and magnesium hydroxide 20 for use, and blowing agent is selected benzinum 8 for use, and curing agent is selected phosphoric acid 3 and benzene sulfonic acid 5 for use.
The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: 1.6, and viscosity is 12000cp under the normal temperature.Compound stirs the back at 70 ℃ of following foamed solidifications.The density of phenol formaldehyde foam is 100kg/m
3
Processing step is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 1.6, is catalyst (pH=8.5) with alkali, reacts 3.5 hours course of reaction refractive index (n down at 80 ℃
D) follow the tracks of, when being 1.51, refractive index adds a small amount of modifier urea, and add acid when being cooled to below 60 ℃ again and be neutralized to pH=6.5, decompression dehydration to viscosity is 12000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 100kg/m
3The component of phenol formaldehyde foam and by weight content as mentioned above, its step is as follows:
By above-mentioned prescription expandable phenolic resin, surfactant, fire retardant are mixed, blowing agent is joined in the above-mentioned compound, again curing agent is joined in the above-mentioned compound, place 70 ℃ of foamed solidifications.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 6 μ m.After above-mentioned phenol phenol formaldehyde foam cut into required size, fit with glue and aluminium foil or aluminium foil fiber cloth, drying is after the deburring processing promptly obtains phenolic foam sandwich material of the present invention.
Embodiment 2
Do not fire the phenolic foam sandwich material and form by 5 layers, surface layer is the aluminium foil fiber cloth, and sandwich layer is a phenol formaldehyde foam, is tack coat between surface layer and the sandwich layer.The surface layer aluminium foil is selected the embossing aluminium foil for use, and aluminium foil surface band corrosion-inhibiting coating.
The component of sandwich layer phenol formaldehyde foam and content by weight are: expandable phenolic resin 100, surfactant is selected " Tween 80 " 2.5 for use, fire retardant is selected magnesium hydroxide 150 and cenosphere 30 for use, and blowing agent is selected pentane 6 for use, and curing agent is selected boric acid 6, benzene sulfonic acid 4 and p-methyl benzenesulfonic acid 5 for use.
The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: 2.0, and viscosity is 10000cp under the normal temperature.Compound stirs the back at 75 ℃ of following foamed solidifications.
The density of said phenol formaldehyde foam is 150kg/m
3
Processing step is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 2.0, is catalyst (pH=8.7) with alkali, reacts 3 hours course of reaction refractive index (n down at 85 ℃
D) follow the tracks of, when being 1.50, refractive index adds a spot of dicyandiamide, and add acid when being cooled to below 60 ℃ again and be neutralized to pH=7, decompression dehydration to viscosity is 10000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 150kg/m
3
The component of phenol formaldehyde foam and by weight content as mentioned above, its step is as follows:
By above-mentioned prescription expandable phenolic resin, surfactant, fire retardant are mixed, blowing agent is joined in the above-mentioned compound, again curing agent is joined in the above-mentioned compound, place 75 ℃ of foamed solidifications.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 5 μ m.After above-mentioned phenol phenol formaldehyde foam cut into required size, fit with glue and aluminium foil or aluminium foil fiber cloth, drying is after the deburring processing promptly obtains phenolic foam sandwich material of the present invention.
Embodiment 3
It is identical with embodiment 1 not fire the phenolic foam sandwich material.
The component of sandwich layer phenol formaldehyde foam and content by weight are: expandable phenolic resin 100, surfactant is selected " EL-40 " 2.5 for use, and fire retardant is selected aluminium hydroxide 100 and cenosphere 150 for use, and blowing agent is selected hexane 3 for use, curing agent is selected phosphatase 24 for use, boric acid 6 and xylene monosulfonic acid 7.The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: 2.5, and viscosity is 5000cp under the normal temperature.Compound stirs the back at 65 ℃ of following foamed solidifications.The density of said phenol formaldehyde foam is 200kg/m
3
Processing step is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 2.5, is catalyst (pH=9) with alkali, reacts 4 hours course of reaction refractive index (n down at 70 ℃
D) follow the tracks of, when being 1.50, refractive index adds a spot of melamine, and add acid when being cooled to below 60 ℃ again and be neutralized to pH=7, decompression dehydration to viscosity is 5000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 200kg/m
3
The component of phenol formaldehyde foam and by weight content as mentioned above, its step is as follows:
By above-mentioned prescription expandable phenolic resin, surfactant, fire retardant are mixed, blowing agent is joined in the above-mentioned compound, again curing agent is joined in the above-mentioned compound, place 65 ℃ of foamed solidifications.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 8 μ m.After above-mentioned phenol phenol formaldehyde foam cut into required size, fit with glue and aluminium foil or aluminium foil fiber cloth, drying is after the deburring processing promptly obtains phenolic foam sandwich material of the present invention.
Embodiment 4
It is identical with embodiment 2 not fire the phenolic foam sandwich material.
The component of sandwich layer phenol formaldehyde foam and content by weight are: expandable phenolic resin 100, surfactant is selected " silicon foams stabilizing agent " 2 and " EL-40 " 1.5 for use, fire retardant is selected aluminium hydroxide 150 for use, magnesium hydroxide 130 and antimony oxide 20, blowing agent is selected carrene 3 for use, and curing agent is selected phosphoric acid 5, boric acid 5 and p-methyl benzenesulfonic acid 10 for use.
The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: 1.3, and viscosity is 1000cp under the normal temperature.Compound stirs the back at 80 ℃ of following foamed solidifications.
The density of said phenol formaldehyde foam is 250kg/m
3
Processing step is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 1.3, is catalyst (pH=8.0) with alkali, reacts 2.4 hours course of reaction refractive index (n down at 100 ℃
D) follow the tracks of, when being 1.51, refractive index adds a spot of dicyandiamide, and add acid when being cooled to below 60 ℃ again and be neutralized to pH=6.3, decompression dehydration to viscosity is 1000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 250kg/m
3
The component of phenol formaldehyde foam and by weight content as mentioned above, its step is as follows:
By above-mentioned prescription expandable phenolic resin, surfactant, fire retardant are mixed, blowing agent is joined in the above-mentioned compound, again curing agent is joined in the above-mentioned compound, place 80 ℃ of foamed solidifications.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 3 μ m.After above-mentioned phenol formaldehyde foam cut into required size, fit with glue and aluminium foil or aluminium foil fiber cloth, drying is after the deburring processing promptly obtains phenolic foam sandwich material of the present invention.
Embodiment 5
It is identical with embodiment 1 not fire the phenolic foam sandwich material.
The component of sandwich layer phenol formaldehyde foam and content by weight are: expandable phenolic resin 100, surfactant is selected " tween series " 0.5 and " EL-40 " 1.5 for use, fire retardant is selected magnesium hydroxide 30 and borate 20 for use, blowing agent is selected benzinum 4 and carrene 6 for use, and curing agent is selected boric acid 18 and p-methyl benzenesulfonic acid 7 for use.
The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: 3.0, and viscosity is 20000cp under the normal temperature.Compound stirs the back at 60 ℃ of following foamed solidifications.
The density of said phenol formaldehyde foam is 120kg/m
3
Processing step is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 3.0, is catalyst (pH=8.3) with alkali, reacts 3 hours course of reaction refractive index (n down at 95 ℃
D) follow the tracks of, when being 1.51, refractive index adds a spot of urea and polyethylene glycol, and add acid when being cooled to below 60 ℃ again and be neutralized to pH=6.3, decompression dehydration to viscosity is 20000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 120kg/m
3
The component of phenol formaldehyde foam and by weight content as mentioned above, its step is identical with embodiment 1.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 10 μ m.After cutting into required size again, fit with glue and aluminium foil fiber cloth, drying promptly obtains phenolic foam sandwich material of the present invention after deburring is handled.
Embodiment 6
It is identical with embodiment 2 not fire the phenolic foam sandwich material.
The component of sandwich layer phenol formaldehyde foam and content by weight are: expandable phenolic resin 100, surfactant is selected " EL-40 " 1 and silicon foams stabilizing agent 4 for use, fire retardant is selected aluminium hydroxide 20 for use, borate 6 and antimony oxide 4, blowing agent is selected benzinum 1 and ethane 1 for use, and curing agent is selected boric acid 2 and benzene sulfonic acid 3 for use.
The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: 2.1, and viscosity is 12000cp under the normal temperature.Compound stirs the back at 80 ℃ of following foamed solidifications.The density of phenol formaldehyde foam is 80kg/m
3
Processing step is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 2.1, is catalyst (pH=8.0) with alkali, reacts 2.4 hours course of reaction refractive index (n down at 100 ℃
D) follow the tracks of, when being 1.52, refractive index adds the modifier urea, and add acid when being cooled to below 60 ℃ again and be neutralized to pH=6.6, decompression dehydration to viscosity is 12000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 80kg/m
3
The component of phenol formaldehyde foam and by weight content as mentioned above, its step is identical with embodiment 1.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 2 μ m.After cutting into required size, with glue and aluminium foil or the applying of aluminium foil fiber cloth, drying promptly obtains phenolic foam sandwich material of the present invention after deburring is handled.
Embodiment 7
It is identical with embodiment 2 not fire the phenolic foam sandwich material.
The component of sandwich layer phenol formaldehyde foam and content by weight are: expandable phenolic resin 100, surfactant is selected " Tween 80 " 1.5 and silicon foams stabilizing agent 0.5 for use, fire retardant is selected magnesium hydroxide 80 and aluminium hydroxide 60 for use, blowing agent is selected pentane 3 and ethane 2.5 for use, and curing agent is selected boric acid 10 and xylene monosulfonic acid 10 for use.
The phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: 2.4, and viscosity is 8000cp under the normal temperature.Compound stirs the back at 75 ℃ of following foamed solidifications.The density of phenol formaldehyde foam is 130kg/m
3
Processing step is:
1, expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 2.4, is catalyst (pH=8.5) with alkali, reacts 2.6 hours course of reaction refractive index (n down at 90 ℃
D) follow the tracks of, when being 1.51, refractive index adds urea and dicyandiamide, and add acid when being cooled to below 60 ℃ again and be neutralized to pH=6.8, decompression dehydration to viscosity is 8000CP (normal temperature) then, promptly obtains expandable phenolic resin.
2, PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 130kg/m
3
The component of phenol formaldehyde foam and by weight content as mentioned above, its step is similar to Example 2.
3, the preparation of phenolic foam sandwich material:
Facestock aluminium foil or aluminium foil fiber cloth are carried out the surface anticorrosion processing, and coating layer thickness is 6 μ m.After above-mentioned phenol formaldehyde foam cut into required size, fit with glue and aluminium foil or aluminium foil fiber cloth, drying is after the deburring processing promptly obtains phenolic foam sandwich material of the present invention.
Claims (10)
1, do not fire the phenolic foam sandwich material, it is characterized in that forming by 5 layers, surface layer is aluminium foil or aluminium foil fiber cloth, and sandwich layer is a phenol formaldehyde foam, is tack coat between surface layer and the sandwich layer.
2, the phenolic foam sandwich material that do not fire as claimed in claim 1 it is characterized in that the surface layer aluminium foil is the embossing aluminium foil, and aluminium foil surface can be provided with corrosion-inhibiting coating.
3, the phenolic foam sandwich material that do not fire as claimed in claim 1, it is characterized in that the component of sandwich layer phenol formaldehyde foam and content by weight are: 100 parts of expandable phenolic resins, 1～5 part in surfactant, 10～300 parts of fire retardants, 1～10 part of blowing agent, 5～25 parts in curing agent.
4, the phenolic foam sandwich material that do not fire as claimed in claim 1 is characterized in that the phenol of expandable phenolic resin and the mol ratio of formaldehyde are 1: (1.3～3.0).
5, the phenolic foam sandwich material that do not fire as claimed in claim 1 is characterized in that said surfactant is selected from tween series, at least a in castor oil polyoxyethylene ether series or the organosilicon series.
6, the phenolic foam sandwich material that do not fire as claimed in claim 1, it is characterized in that said fire retardant is the environmental protection inorganic fire retardant, be selected from aluminium hydroxide (for example micron order hydrated alumina ATH), magnesium hydroxide, cenosphere, at least a in antimony oxide or the borate etc.
7, the phenolic foam sandwich material that do not fire as claimed in claim 1 is characterized in that said blowing agent is a low boiling alkane, is selected from benzinum, pentane, at least a in ethane or the carrene etc.
8, the phenolic foam sandwich material that do not fire as claimed in claim 1 is characterized in that said curing agent is middle strong acid, is selected from phosphoric acid, boric acid, benzene sulfonic acid, at least a in p-methyl benzenesulfonic acid or the xylene monosulfonic acid etc.
9, the phenolic foam sandwich material that do not fire as claimed in claim 1 is characterized in that compound stirs the back at 60～80 ℃ of following foamed solidifications.
10, do not fire the phenolic foam sandwich material preparation method, it is characterized in that its processing step is:
1), expandable phenolic resin is synthetic:
The mol ratio of phenol and formaldehyde is 1: 1.3～3.0, with alkali is catalyst, and reacted 2～4 hours down at 70～100 ℃ pH=8～9, when being 1.50～1.52, refractive index adds modifier, modifier is selected from urea, dicyandiamide, melamine, a kind of in polyvinyl alcohol or the polyethylene glycol etc., add acid when being cooled to below 60 ℃ again and be neutralized to pH=6～7, decompression dehydration to viscosity is 1000～20000CP then, promptly obtains expandable phenolic resin;
2), PREPARATION OF PHENOLIC FOAM:
The density of phenol formaldehyde foam is 60～250kg/m
3, the component of phenol formaldehyde foam and content by weight are:
(1) expandable phenolic resin is 100 parts, and viscosity is 1000～20000CP,
(2) surfactant is 1～5 part, and is optional from tween series, castor oil polyoxyethylene ether series or silicon foams stabilizing agent a kind of,
(3) fire retardant is 10～300 parts, can be selected from aluminium hydroxide, magnesium hydroxide, and cenosphere, at least a in antimony oxide or the borate,
(4) blowing agent is 1～10 part, can be selected from benzinum, pentane, and at least a in hexane or the carrene etc.,
(5) curing agent is 5～25 parts, can be selected from phosphoric acid, boric acid, and benzene sulfonic acid, at least a in p-methyl benzenesulfonic acid or the xylene monosulfonic acid etc.,
Its step is as follows:
(1) expandable phenolic resin, surfactant, fire retardant are mixed,
(2) blowing agent is joined in the above-mentioned compound,
(3) again curing agent is joined in the above-mentioned compound, place 60～80 ℃ of foamed solidifications;
3), the preparation of phenolic foam sandwich material: facestock aluminium foil or aluminium foil fiber cloth are carried out surface anticorrosion and are handled, and coating layer thickness is 1～10 μ m, cut into required size after, fit with glue and aluminium foil or aluminium foil fiber cloth, drying is after the deburring processing.
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| CN 200310113967 CN1287978C (en) | 2003-11-05 | 2003-11-05 | Flame retardant phenolic resin foamed sandwiching material and its preparation |
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- 2003-11-05 CN CN 200310113967 patent/CN1287978C/en not_active Expired - Fee Related
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| CN102977548B (en) * | 2012-12-27 | 2013-12-11 | 北京莱恩斯高新技术有限公司 | Vegetable tannin extract modified phenol formaldehyde foam and preparation method thereof |
| CN102977548A (en) * | 2012-12-27 | 2013-03-20 | 北京莱恩斯高新技术有限公司 | Vegetable tannin extract modified phenol formaldehyde foam and preparation method thereof |
| 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 |
| CN103333365A (en) * | 2013-06-17 | 2013-10-02 | 青岛科技大学 | Compound inorganic flame retardant and application thereof to carrying out flame retardance on EVA (ethylene-vinyl acetate copolymer) composite material |
| CN103333365B (en) * | 2013-06-17 | 2015-09-23 | 青岛科技大学 | Composite inorganic fire retardant and the application in fire-retardant EVA matrix material thereof |
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| CN107365510A (en) * | 2017-08-30 | 2017-11-21 | 安徽伟创聚合材料科技有限公司 | A kind of method that heat preservation environment protection flame-proof sheet material is prepared using waste and old clothes |
| CN111978591A (en) * | 2019-05-24 | 2020-11-24 | 洛阳双瑞橡塑科技有限公司 | Non-combustible foam and preparation method thereof |
| CN113715426A (en) * | 2021-08-30 | 2021-11-30 | 雪宝家居集团有限公司 | Preparation process of flame-retardant environment-friendly board |
| CN114752103A (en) * | 2022-05-06 | 2022-07-15 | 杭州艺焓饰材有限公司 | Formula and process for manufacturing phenolic resin plate |
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