CN107857850A - Polyurethane inhales wave resistance combustible material and preparation method thereof - Google Patents
Polyurethane inhales wave resistance combustible material and preparation method thereof Download PDFInfo
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- CN107857850A CN107857850A CN201610840957.6A CN201610840957A CN107857850A CN 107857850 A CN107857850 A CN 107857850A CN 201610840957 A CN201610840957 A CN 201610840957A CN 107857850 A CN107857850 A CN 107857850A
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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
- C08G18/48—Polyethers
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- 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
- C08J9/06—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 chemical blowing agent
- C08J9/08—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 chemical blowing agent developing carbon dioxide
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
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- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C08K3/02—Elements
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- 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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- C08K3/38—Boron-containing compounds
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- 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
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- C08G2101/00—Manufacture of cellular products
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- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/048—Elimination of a frozen liquid phase
- C08J2201/0484—Elimination of a frozen liquid phase the liquid phase being aqueous
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- C08J2203/00—Foams characterized by the expanding agent
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention provides a kind of polyurethane to inhale wave resistance combustible material, wherein, it is obtained by the aggregated reaction of component of following mass parts：100 parts of PPG, 20~70 parts of toluene di-isocyanate(TDI), 0.2~1 part of Nano carbon white, 10~20 parts of deionized water, 5~20 parts of methyl-phosphoric acid dimethyl ester, 2~8 parts of graphene oxide, 10~30 parts of ferroso-ferric oxide, 2~8 parts of Firebrake ZB, 0.02~0.4 part of stannous octoate, 0.03~0.6 part of triethylene diamine, 0.2~3 part of organic silicon surfactant, 1~10 part of sodium acid carbonate.Above-mentioned polyurethane provided by the invention, which inhales wave resistance combustible material, has the characteristics that low cigarette, low toxicity, absorption frequency distribution that is fire retardant, absorbing ripple are wide.The present invention also provides the preparation method that a kind of above-mentioned polyurethane inhales wave resistance combustible material.
Description
Technical field
The invention belongs to technical field of function materials, and in particular to a kind of polyurethane inhales wave resistance combustible material and its preparation side
Method.
Background technology
Absorbing material, it is to refer to be projected onto the electromagnetic wave on its surface largely to absorb and change into the energy of other forms
Amount and almost unreflected material.With the development of modern science and technology, influence of the electromagenetic wave radiation to environment increasingly increases.
Airport, airplane flight are overdue because Electromagnetic Interference can not take off；In hospital, mobile phone can often disturb various electronic instrument for diagnosing and curing diseases
The normal work of device.Other electromagnetic radiation causes wound directly or indirectly by fuel factor, non-thermal effect, cumulative effect to human body
Evil.Therefore, electromagnetic pollution is administered, finds a kind of material that can be kept out and weaken electromagenetic wave radiation --- absorbing material, it has also become
One big problem of material science.
Polyurethane foam has that porous, relative density is small, and heatproof, ageing-resistant, anti-organic solvent corrode, easily shaping
The features such as processing, it is widely used in absorbing material.At present mainly by the way that wave absorbing agent is added into hard polyurethane foam system,
It is re-introduced into mould and reacts foaming, or flexible polyurethane foams are cut into predetermined shape, impregnates wave absorbing agent solution to make
Standby polyurethane foam composite wave-suction material, these materials have that complex manufacturing technology, function are single, inhale ripple auxiliary agent and be easy to come off,
The defects of inflammable.
Chinese patent CN200910029840.X " foamed high resilience polyurethane wave-absorbing material and preparation method thereof " is open
A kind of polyurethane wave-absorbing material prepared using the raw materials such as auxiliary agent, fire retardant are absorbed.But the material has that size is big, makes work
The defects of skill complexity.It is to inhale ripple material that raising fire resistance, manufacture craft are simple while how improving absorbing property, reduce pollution
Expect the key issue of development.
The content of the invention
In view of this, the present invention inhales wave resistance combustible material and preparation method thereof it is necessory to provide a kind of polyurethane, to solve
Above mentioned problem.
The present invention provides a kind of polyurethane and inhales wave resistance combustible material, and it is obtained by the aggregated reaction of component of following mass parts：
100 parts of PPG, 20~70 parts of toluene di-isocyanate(TDI), 0.2~1 part of Nano carbon white, 10~20 parts of deionized water, first
5~20 parts of base dimethyl phosphate, 2~8 parts of graphene oxide, 10~30 parts of ferroso-ferric oxide, 2~8 parts of Firebrake ZB, stannous octoate
0.02~0.4 part, 0.03~0.6 part of triethylene diamine, 0.2~3 part of organic silicon surfactant, 1~10 part of sodium acid carbonate.
Wherein, the polyether polyol hydroxyl value is 30~60mgKOH/g.The isocyanates of the toluene di-isocyanate(TDI)
Index is 0.60~1.15.
Based on above-mentioned, the polyurethane is inhaled wave resistance combustible material and obtained by the aggregated reaction of component of following mass parts：Polyethers
100 parts of polyalcohol, 40~50 parts of toluene di-isocyanate(TDI), 0.4~0.8 part of Nano carbon white, 13~17 parts of deionized water, methyl
10~15 parts of dimethyl phosphate, 4~6 parts of graphene oxide, 15~25 parts of ferroso-ferric oxide, 4~6 parts of Firebrake ZB, stannous octoate
0.08~0.3 part, 0.12~0.45 part of triethylene diamine, 1~2 part of organic silicon surfactant, 5~7 parts of sodium acid carbonate.
The present invention also provides the preparation method that a kind of above-mentioned polyurethane inhales wave resistance combustible material, and it comprises the following steps：
Raw material mixes：PPG, methyl-phosphoric acid dimethyl ester, Nano carbon white, ferroso-ferric oxide, Firebrake ZB, octanoic acid is sub-
Tin, triethylene diamine, deionized water, organic silicon surfactant are stirred at room temperature uniformly, then handled through ultrasonic disperse
To first mixture；
Reaction foaming：Toluene di-isocyanate(TDI) is added into the first mixture and is stirred by ultrasonic 5~10 minutes, adds oxygen
Graphite alkene and sodium acid carbonate, mould is then poured into rapidly and carries out room temperature foaming 30~90 minutes, obtains absorbing material gel；
Freeze-drying：The absorbing material gel be freeze-dried and produces the polyurethane suction wave resistance combustible material.
Included based on the step of above-mentioned, the reaction is foamed：In the presence of ultrasonic agitation, first by toluene di-isocyanate(TDI)
5~10 minutes in the first mixture is added under conditions of heating while stirring, graphene oxide and carbonic acid are added
Hydrogen sodium；Then mould is poured into rapidly and carries out room temperature foaming 30~90 minutes, obtains the absorbing material gel.
Based on above-mentioned, in the step of raw material mixes, the ultrasonic disperse processing is carried out in a water bath.
Include based on above-mentioned, the step of the freeze-drying：First the absorbing material gel is freezed 10~70 hours, it is cold
It is 5~50 DEG C below mixed solution freezing point temperature to freeze temperature；Then by the mixed solution after freezing further in -10~-100
DEG C low-temp low-pressure is dried 24~96 hours, and pressure is 0.1~1kPa；Finally by the dried mixed solution of low-temp low-pressure in 60~
100 DEG C solidify 4~12 hours.
Compared with prior art, polyurethane suction wave resistance combustible material provided by the invention uses methyl-phosphoric acid dimethyl ester and boric acid
Zinc is combined, and is allowed to play fire-retardant synergy so that the polyurethane, which inhales wave resistance combustible material, has low cigarette, low toxicity, fire retardant etc.
Feature, and the fire resistance of the material reaches HF-1 levels；Sodium acid carbonate produces bubble with graphite oxide alkene reaction, coordinates simultaneously
Freeze Drying Technique removes the deionized water in the absorbing material gel so that the polyurethane of preparation, which inhales wave resistance combustible material, to be had
Loose structure, larger specific surface area, in addition, Nano carbon white and graphene oxide have a larger adsorptivity, then with four oxygen
Change three-iron to coordinate so that the polyurethane, which inhales wave resistance combustible material, has higher wave absorbing efficiency, and absorption frequency distribution is wide, is applied to
Wave-absorbing and camouflage field.The present invention is combined using chemical foaming technology and orientation Freeze Drying Technique to inhale to prepare the polyurethane
Wave resistance combustible material, preparation technology is simple, small investment, and production efficiency is high, environment-friendly.
Embodiment
Below by embodiment, technical scheme is described in further detail.
Embodiment 1
The embodiment of the present invention provides a kind of polyurethane and inhales wave resistance combustible material, and it aggregated is reacted by the component of following mass parts
Arrive：100 parts of PPG, 20 parts of toluene di-isocyanate(TDI), 0.2 part of Nano carbon white, 10 parts of deionized water, methyl acid phosphate two
5 parts of methyl esters, 2 parts of graphene oxide, 10 parts of ferroso-ferric oxide, 2 parts of Firebrake ZB, 0.02 part of stannous octoate, triethylene diamine 0.03
Part, 0.2 part of organic silicon surfactant, 1 part of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane inhales wave resistance combustible material, and it includes following step
Suddenly：
Raw material mixes：Above-mentioned mass parts, by PPG, methyl-phosphoric acid dimethyl ester, Nano carbon white, ferroso-ferric oxide, boron
Sour zinc, stannous octoate, triethylene diamine, deionized water, organic silicon surfactant are stirred at room temperature uniformly, then through ultrasound
Decentralized processing obtains first mixture；
Reaction foaming：In the presence of ultrasonic agitation, first toluene di-isocyanate(TDI) is added under conditions of heating while stirring
Into the first mixture 5~10 minutes, graphene oxide and sodium acid carbonate are added；Then mould is poured into rapidly carries out room
Temperature foaming 30 minutes, obtains absorbing material gel；
Freeze-drying：First the absorbing material gel is freezed 10 hours, cryogenic temperature is 5 below mixed solution freezing point temperature
℃；Then the mixed solution after freezing is further dried 24 hours in -10 DEG C of low-temp low-pressures, pressure is 0.1 kPa；Finally will
The dried mixed solution of low-temp low-pressure solidifies 12 hours in 60 DEG C, obtains above-mentioned polyurethane and inhales wave resistance combustible material.
Performance test
Absorbing property detection method：It is 3cm × 3cm that above-mentioned polyurethane suction wave resistance combustible material is cut into area, and thickness is 4 mm
Rectangular patch sample, and the very smooth aluminium foil of layer of surface is sticked on a side surface, using digital vector network point
The microwave reflection rate curve of analyzer (8722ET types) test above-mentioned sample in 4~20 ghz bands.It will detect, absorbing property exists
It is less than -30 db in 4GHz~20GHz frequency ranges.
Fire resistance detection method：According to GB/T 8332-2008 foamed plastics combustibility test method horizontal firing methods
Detected to above-mentioned.After testing, the fire resistance of above-mentioned polyurethane suction wave resistance combustible material reaches HF-1 levels.
Embodiment 2
The embodiment of the present invention provides a kind of polyurethane suction wave resistance combustible material and obtained by the aggregated reaction of component of following mass parts：It is poly-
100 parts of ethoxylated polyhydric alcohol, 30 parts of toluene di-isocyanate(TDI), 0.4 part of Nano carbon white, 13 parts of deionized water, methyl-phosphoric acid dimethyl ester
10 parts, 4 parts of graphene oxide, 15 parts of ferroso-ferric oxide, 4 parts of Firebrake ZB, 0.08 part of stannous octoate, 0.12 part of triethylene diamine,
1 part of organic silicon surfactant, 5 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane inhales wave resistance combustible material, the preparation method and reality
Apply example 1 offer preparation method it is essentially identical, difference is：
Reaction foaming：Room temperature foamed time in the step is 60 minutes；
Freeze-drying：The step includes first freezing the absorbing material gel 30 hours, and cryogenic temperature solidifies for mixed solution
15 DEG C below point temperature；Then the mixed solution after freezing is further dried 48 hours in -30 DEG C of low-temp low-pressures, pressure is
0.3 kPa；Finally the dried mixed solution of low-temp low-pressure is solidified 10 hours in 70 DEG C, above-mentioned polyurethane is obtained and inhales wave resistance combustion
Material.
Performance test
Using the identical method with being provided in embodiment 1, the suction of the polyurethane suction wave resistance combustible material provided above-described embodiment
Receive ripple performance and fire resistance is detected, testing result is：Absorbing property is less than -33 in 4GHz~20GHz frequency ranges
Db, the fire resistance that above-mentioned polyurethane inhales wave resistance combustible material reach HF-1 levels.
Embodiment 3
The embodiment of the present invention provides a kind of polyurethane and inhales wave resistance combustible material, and it aggregated is reacted by the component of following mass parts
Arrive：100 parts of PPG, 40 parts of toluene di-isocyanate(TDI), 0.6 part of Nano carbon white, 15 parts of deionized water, methyl acid phosphate two
13 parts of methyl esters, 5 parts of graphene oxide, 20 parts of ferroso-ferric oxide, 5 parts of Firebrake ZB, 0.2 part of stannous octoate, triethylene diamine 0.3
Part, 1.6 parts of organic silicon surfactant, 6 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane inhales wave resistance combustible material, the preparation method and reality
Apply example 1 offer preparation method it is essentially identical, difference is：
Reaction foaming：Room temperature foamed time in the step is 60 minutes；
Freeze-drying：The step includes first freezing the absorbing material gel 40 hours, and cryogenic temperature solidifies for mixed solution
30 DEG C below point temperature；Then the mixed solution after freezing is further dried 60 hours in -50 DEG C of low-temp low-pressures, pressure is
0.6 kPa；Finally the dried mixed solution of low-temp low-pressure is solidified 8 hours in 80 DEG C, above-mentioned polyurethane is obtained and inhales wave resistance combustion
Material.
Performance test
Using the identical method with being provided in embodiment 1, the suction of the polyurethane suction wave resistance combustible material provided above-described embodiment
Receive ripple performance and fire resistance is detected, testing result is：Absorbing property is less than -37 in 4GHz~20GHz frequency ranges
Db, the fire resistance that above-mentioned polyurethane inhales wave resistance combustible material reach HF-1 levels.
Embodiment 4
The embodiment of the present invention provides a kind of polyurethane suction wave resistance combustible material and obtained by the aggregated reaction of component of following mass parts：It is poly-
100 parts of ethoxylated polyhydric alcohol, 50 parts of toluene di-isocyanate(TDI), 0.8 part of Nano carbon white, 17 parts of deionized water, methyl-phosphoric acid dimethyl ester
15 parts, 6 parts of graphene oxide, 25 parts of ferroso-ferric oxide, 6 parts of Firebrake ZB, 0.3 part of stannous octoate, 0.45 part of triethylene diamine, have
2 parts of organic silicon surface active agent, 7 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane inhales wave resistance combustible material, the preparation method and reality
Apply example 1 offer preparation method it is essentially identical, difference is：
Reaction foaming：Room temperature foamed time in the step is 90 minutes；
Freeze-drying：The step includes first freezing the absorbing material gel 60 hours, and cryogenic temperature solidifies for mixed solution
40 DEG C below point temperature；Then the mixed solution after freezing is further dried 72 hours in -80 DEG C of low-temp low-pressures, pressure is
0.8 kPa；Finally the dried mixed solution of low-temp low-pressure is solidified 6 hours in 90 DEG C, above-mentioned polyurethane is obtained and inhales wave resistance combustion
Material.
Performance test
Using the identical method with being provided in embodiment 1, the suction of the polyurethane suction wave resistance combustible material provided above-described embodiment
Receive ripple performance and fire resistance is detected, testing result is：Absorbing property is less than -38 in 4GHz~20GHz frequency ranges
Db, the fire resistance that above-mentioned polyurethane inhales wave resistance combustible material reach HF-1 levels.
Embodiment 5
The embodiment of the present invention provides a kind of polyurethane and inhales wave resistance combustible material, and it aggregated is reacted by the component of following mass parts
Arrive：100 parts of PPG, 70 parts of toluene di-isocyanate(TDI), 1 part of Nano carbon white, 20 parts of deionized water, methyl acid phosphate diformazan
20 parts of ester, 8 parts of graphene oxide, 30 parts of ferroso-ferric oxide, 8 parts of Firebrake ZB, 0.4 part of stannous octoate, 0.6 part of triethylene diamine,
3 parts of organic silicon surfactant, 10 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane inhales wave resistance combustible material, the preparation method and reality
Apply example 1 offer preparation method it is essentially identical, difference is：
Reaction foaming：Room temperature foamed time in the step is 90 minutes；
Freeze-drying：The step includes first freezing the absorbing material gel 70 hours, and cryogenic temperature solidifies for mixed solution
50 DEG C below point temperature；Then the mixed solution after freezing is further dried 96 hours in -100 DEG C of low-temp low-pressures, pressure 1
kPa；Finally the dried mixed solution of low-temp low-pressure is solidified 4 hours in 100 DEG C, above-mentioned polyurethane is obtained and inhales wave resistance fuel wood
Material.
Performance test
Using the identical method with being provided in embodiment 1, the suction of the polyurethane suction wave resistance combustible material provided above-described embodiment
Receive ripple performance and fire resistance is detected, testing result is：Absorbing property is less than -36 in 4GHz~20GHz frequency ranges
Db, the fire resistance that above-mentioned polyurethane inhales wave resistance combustible material reach HF-1 levels.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical scheme, it all should cover among the claimed technical scheme scope of the present invention.
Claims (6)
1. a kind of polyurethane inhales wave resistance combustible material, it is characterised in that it is obtained by the aggregated reaction of component of following mass parts：It is poly-
100 parts of ethoxylated polyhydric alcohol, 20~70 parts of toluene di-isocyanate(TDI), 0.2~1 part of Nano carbon white, 10~20 parts of deionized water, methyl
5~20 parts of dimethyl phosphate, 2~8 parts of graphene oxide, 10~30 parts of ferroso-ferric oxide, 2~8 parts of Firebrake ZB, stannous octoate
0.02~0.4 part, 0.03~0.6 part of triethylene diamine, 0.2~3 part of organic silicon surfactant, 1~10 part of sodium acid carbonate, its
In, the polyether polyol hydroxyl value is 30~60mgKOH/g, and the index of the isocyanates of the toluene di-isocyanate(TDI) is 0.60
~1.15.
2. polyurethane according to claim 1 inhales wave resistance combustible material, it is characterised in that it is passed through by the component of following mass parts
Polymerisation obtains：100 parts of PPG, 40~50 parts of toluene di-isocyanate(TDI), 0.4~0.8 part of Nano carbon white, go from
Sub- 13~17 parts of water, 10~16 parts of methyl-phosphoric acid dimethyl ester, 4~6 parts of graphene oxide, 15~25 parts of ferroso-ferric oxide, boric acid
4~6 parts of zinc, 0.08~0.3 part of stannous octoate, 0.12~0.45 part of triethylene diamine, 1~2 part of organic silicon surfactant, carbon
Sour 5~7 parts of hydrogen sodium.
3. the polyurethane described in a kind of claim 1 or 2 inhales the preparation method of wave resistance combustible material, it comprises the following steps：
Raw material mixes：PPG, methyl-phosphoric acid dimethyl ester, Nano carbon white, ferroso-ferric oxide, Firebrake ZB, octanoic acid is sub-
Tin, triethylene diamine, deionized water, organic silicon surfactant are stirred at room temperature uniformly, then handled through ultrasonic disperse
To first mixture；
Reaction foaming：Toluene di-isocyanate(TDI) is added into the first mixture and is stirred by ultrasonic 5~10 minutes, adds oxygen
Graphite alkene and sodium acid carbonate, mould is then poured into rapidly and carries out room temperature foaming 30~90 minutes, obtains absorbing material gel；
Freeze-drying：The absorbing material gel be freeze-dried and produces the polyurethane suction wave resistance combustible material.
4. polyurethane according to claim 3 inhales the preparation method of wave resistance combustible material, it is characterised in that the reaction foaming
The step of include：In the presence of ultrasonic agitation, first toluene di-isocyanate(TDI) is added under conditions of heating while stirring
5~10 minutes in the first mixture, graphene oxide and sodium acid carbonate are added；Then mould is poured into rapidly carries out room temperature
Foaming 30~90 minutes, obtains the absorbing material gel.
5. polyurethane according to claim 4 inhales the preparation method of wave resistance combustible material, it is characterised in that is mixed in the raw material
In the step of conjunction, the ultrasonic disperse processing is carried out in a water bath.
6. the polyurethane according to claim 3 or 4 or 5 any one inhales the preparation method of wave resistance combustible material, it is characterised in that
The step of freeze-drying, includes：First the absorbing material gel is freezed 10~70 hours, cryogenic temperature is mixed solution
5~50 DEG C below freezing point temperature；Then the mixed solution after freezing is further dried 24 in -10~-100 DEG C of low-temp low-pressures
~96 hours, pressure was 0.1~1kPa；It is finally that the dried mixed solution of low-temp low-pressure is small in 60~100 DEG C of solidifications 4~12
When.
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Cited By (3)
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| CN108998689A (en) * | 2018-07-03 | 2018-12-14 | 中国科学院金属研究所 | A kind of refractory metal ceramics absorbing material and preparation method thereof |
| CN110655872A (en) * | 2019-09-29 | 2020-01-07 | 湖南省和祥润新材料有限公司 | Halogen-free flame-retardant UV (ultraviolet) curing acrylate pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof |
| CN113801529A (en) * | 2021-10-14 | 2021-12-17 | 大连东信微波技术有限公司 | High-flame-retardance clean wave-absorbing material, and preparation method and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108998689A (en) * | 2018-07-03 | 2018-12-14 | 中国科学院金属研究所 | A kind of refractory metal ceramics absorbing material and preparation method thereof |
| CN110655872A (en) * | 2019-09-29 | 2020-01-07 | 湖南省和祥润新材料有限公司 | Halogen-free flame-retardant UV (ultraviolet) curing acrylate pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof |
| CN110655872B (en) * | 2019-09-29 | 2021-09-21 | 湖南省和祥润新材料有限公司 | Halogen-free flame-retardant UV (ultraviolet) curing acrylate pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof |
| CN113801529A (en) * | 2021-10-14 | 2021-12-17 | 大连东信微波技术有限公司 | High-flame-retardance clean wave-absorbing material, and preparation method and application thereof |
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