CN107868213A - Polyurethane barium titanate composite flame-proof inhales ripple porous material and preparation method thereof - Google Patents
Polyurethane barium titanate composite flame-proof inhales ripple porous material and preparation method thereof Download PDFInfo
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Abstract
The invention provides a kind of polyurethane barium titanate composite flame-proof to inhale ripple porous 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), 0.05~0.4 part of nano carbon sol, 0.2~0.5 part of Nano carbon white, 10~20 parts of deionized water, 5~25 parts of methyl-phosphoric acid dimethyl ester, 2~10 parts of carboxyl multi-walled carbon nanotube, 10~20 parts of barium titanate, 1~5 part of nano zine oxide, 1~3 part of nanometer tungsten 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, 2~8 parts of sodium acid carbonate.Above-mentioned polyurethane barium titanate composite flame-proof provided by the invention, which inhales ripple porous 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 barium titanate composite flame-proof inhales ripple porous material.
Description
Technical field
The invention belongs to technical field of function materials, and in particular to a kind of polyurethane barium titanate composite flame-proof inhales the porous material of ripple
Material and preparation method thereof.
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 ripple porous material and its system it is necessory to provide a kind of polyurethane barium titanate composite flame-proof
Preparation Method, to solve the above problems.
The present invention provides a kind of polyurethane barium titanate composite flame-proof and inhales ripple porous material, and it is passed through by the component of following mass parts
Polymerisation obtains：100 parts of PPG, 20~70 parts of toluene di-isocyanate(TDI), 0.05~0.4 part of nano carbon sol, receive
0.2~0.5 part of off-white carbon black, 10~20 parts of deionized water, 5~25 parts of methyl-phosphoric acid dimethyl ester, carboxyl multi-walled carbon nanotube 2~
10 parts, 10~20 parts of barium titanate, 1~5 part of nano zine oxide, 1~3 part of nanometer tungsten 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, 2~8 parts 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, it is aggregated by the component of following mass parts that the polyurethane barium titanate composite flame-proof inhales ripple porous material
Reaction obtains：100 parts of PPG, 40~50 parts of toluene di-isocyanate(TDI), 0.15~0.25 part of nano carbon sol, nanometer is white
0.3~0.4 part of carbon black, 13~17 parts of deionized water, 10~20 parts of methyl-phosphoric acid dimethyl ester, carboxyl multi-walled carbon nanotube 4~8
Part, 13~17 parts of barium titanate, 2~4 parts of nano zine oxide, 1.5~2.5 parts of nanometer tungsten 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, 4~6 parts of sodium acid carbonate.
The present invention also provides the preparation method that a kind of above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material, and it includes
Following steps：
Raw material mixes：By PPG, methyl-phosphoric acid dimethyl ester, nano carbon sol, Nano carbon white, barium titanate, Firebrake ZB,
Stannous octoate, triethylene diamine, deionized water, organic silicon surfactant are stirred at room temperature uniformly, then through ultrasonic disperse
Processing obtains first mixture；
Reaction foaming：First toluene di-isocyanate(TDI), nano zine oxide and nanometer tungsten oxide are added into the first mixture simultaneously
Ultrasonic agitation 15~30 minutes, adds carboxyl CNT and sodium acid carbonate, then pours into mould rapidly and carries out room temperature foaming
30~90 minutes, obtain absorbing material gel；
Freeze-drying：The absorbing material gel be freeze-dried and produces the polyurethane barium titanate composite flame-proof to inhale ripple more
Porous materials.
Included based on the step of above-mentioned, the reaction is foamed：In the presence of ultrasonic agitation, first by toluene diisocynate
Ester, nano zine oxide and nanometer tungsten oxide are 15~30 points in the first mixture is added under conditions of heating while stirring
Clock, add carboxyl multi-walled carbon nanotube and sodium acid carbonate；Then mould is poured into rapidly and carries out room temperature foaming 30~90 minutes, is obtained
To 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 barium titanate composite flame-proof suction ripple porous material provided by the invention uses methyl phosphorus
Dimethyl phthalate is combined with Firebrake ZB, is allowed to play fire-retardant synergy so that the polyurethane barium titanate composite flame-proof inhales ripple
Porous material has the characteristics that low cigarette, low toxicity, fire retardant, and the fire resistance of the material reaches HF-1 levels；Sodium acid carbonate and carboxylic
Quito wall carbon nano tube, which reacts, produces bubble, while coordinates Freeze Drying Technique to remove and gone in the absorbing material gel
Ionized water so that the polyurethane barium titanate composite flame-proof of preparation, which inhales ripple porous material, has a loose structure, larger specific surface area,
In addition, nano carbon sol, Nano carbon white and carboxyl multi-walled carbon nanotube have a larger adsorptivity, then with barium titanate, nanometer
Zinc oxide and nanometer tungsten oxide coordinate so that the polyurethane barium titanate composite flame-proof, which inhales ripple porous material, has higher suction ripple
Efficiency, absorption frequency distribution is wide, suitable for wave-absorbing and camouflage field.Further, since nano carbon sol and CNT have preferably
Electric conductivity, and be evenly dispersed in polyurethane matrix and form good conductive network, it is compound to prepare gained polyurethane
The electric property of material improves and stably, excess effusion value is low.The present invention is using chemical foaming technology and orientation Freeze Drying Technique phase
Ripple porous material is inhaled with reference to prepare the polyurethane barium titanate composite flame-proof, preparation technology is simple, small investment, production efficiency
Height, it is 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 barium titanate composite flame-proof and inhales ripple porous material, its by following mass parts component
Aggregated reaction obtains：100 parts of PPG, 20 parts of toluene di-isocyanate(TDI), 0.05 part of nano carbon sol, Nano carbon white
0.2 part, 10 parts of deionized water, 5 parts of methyl-phosphoric acid dimethyl ester, 2 parts of carboxyl multi-walled carbon nanotube, 10 parts of barium titanate is nano oxidized
1 part of zinc, 1 part of nanometer tungsten oxide, 2 parts of Firebrake ZB, 0.02 part of stannous octoate, 0.03 part of triethylene diamine, organosilicone surfactant
0.2 part of agent, 2 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material,
It comprises the following steps：
Raw material mixes：Above-mentioned mass parts, by PPG, methyl-phosphoric acid dimethyl ester, nano carbon sol, Nano carbon white, titanium
Sour barium, Firebrake ZB, stannous octoate, triethylene diamine, deionized water, organic silicon surfactant are stirred at room temperature uniformly, so
Handle to obtain first mixture by ultrasonic disperse；
Reaction foaming：In the presence of ultrasonic agitation, first by toluene di-isocyanate(TDI), nano zine oxide and nanometer tungsten oxide on side
It is added under conditions of the stirring of heating side in the first mixture 15~30 minutes, adds carboxyl multi-walled carbon nanotube and carbon
Sour hydrogen sodium；Then mould is poured into rapidly and 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, and it is porous to obtain above-mentioned polyurethane barium titanate composite flame-proof suction ripple
Material.
Performance test
Absorbing property detection method：By above-mentioned polyurethane barium titanate composite flame-proof suction ripple porous material cut into area for 3cm ×
3cm, thickness are 4 mm rectangular patch sample, and the very smooth aluminium foil of layer of surface is sticked on a side surface, using number
The microwave reflection rate curve of word vector network analyzer (8722ET types) test above-mentioned sample in 4~20 ghz bands.Will
Detection, absorbing property are less than -41 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 barium titanate composite flame-proof suction ripple porous material reaches HF-1
Level.
Embodiment 2
The embodiment of the present invention provides a kind of polyurethane barium titanate composite flame-proof and inhales component warp of the ripple porous material by following mass parts
Polymerisation obtains：100 parts of PPG, 30 parts of toluene di-isocyanate(TDI), 0.15 part of nano carbon sol, Nano carbon white
0.3 part, 13 parts of deionized water, 10 parts of methyl-phosphoric acid dimethyl ester, 4 parts of carboxyl multi-walled carbon nanotube, 13 parts of barium titanate is nano oxidized
2 parts of zinc, 1.5 parts of nanometer tungsten oxide, 4 parts of Firebrake ZB, 0.08 part of stannous octoate, 0.12 part of triethylene diamine, organosilyl surface are lived
1 part of agent of property, 4 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material,
The preparation method and the preparation method that embodiment 1 provides are essentially identical, and 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 barium titanate is obtained and answers
Close flame-retarding wave-absorbing porous material.
Performance test
Using the identical method with being provided in embodiment 1, the polyurethane barium titanate composite flame-proof that above-described embodiment provides is inhaled
The absorption ripple performance and fire resistance of ripple porous material are detected, and testing result is：Absorbing property is in 4GHz~20GHz frequencies
In the range of be less than -43 db, the fire resistance that above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material reaches HF-1 levels.
Embodiment 3
The embodiment of the present invention provides a kind of polyurethane barium titanate composite flame-proof and inhales ripple porous material, its by following mass parts component
Aggregated reaction obtains：100 parts of PPG, 40 parts of toluene di-isocyanate(TDI), 0.2 part of nano carbon sol, Nano carbon white
0.35 part, 15 parts of deionized water, 15 parts of methyl-phosphoric acid dimethyl ester, 6 parts of carboxyl multi-walled carbon nanotube, 15 parts of barium titanate, nano oxygen
Change 3 parts of zinc, 2 parts of nanometer tungsten oxide, 5 parts of Firebrake ZB, 0.2 part of stannous octoate, 0.3 part of triethylene diamine, organosilicone surfactant
1.6 parts of agent, 5 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material,
The preparation method and the preparation method that embodiment 1 provides are essentially identical, and 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 barium titanate is obtained and answers
Close flame-retarding wave-absorbing porous material.
Performance test
Using the identical method with being provided in embodiment 1, the polyurethane barium titanate composite flame-proof that above-described embodiment provides is inhaled
The absorption ripple performance and fire resistance of ripple porous material are detected, and testing result is：Absorbing property is in 4GHz~20GHz frequencies
In the range of be less than -47 db, the fire resistance that above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material reaches HF-1 levels.
Embodiment 4
The embodiment of the present invention provides a kind of polyurethane barium titanate composite flame-proof and inhales component warp of the ripple porous material by following mass parts
Polymerisation obtains：100 parts of PPG, 50 parts of toluene di-isocyanate(TDI), 0.25 part of nano carbon sol, Nano carbon white
0.4 part, 17 parts of deionized water, 20 parts of methyl-phosphoric acid dimethyl ester, 8 parts of carboxyl multi-walled carbon nanotube, 17 parts of barium titanate is nano oxidized
4 parts of zinc, 2.5 parts of nanometer tungsten oxide, 6 parts of Firebrake ZB, 0.3 part of stannous octoate, 0.45 part of triethylene diamine, organosilicone surfactant
2 parts of agent, 6 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material,
The preparation method and the preparation method that embodiment 1 provides are essentially identical, and 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 barium titanate is obtained and answers
Close flame-retarding wave-absorbing porous material.
Performance test
Using the identical method with being provided in embodiment 1, the polyurethane barium titanate composite flame-proof that above-described embodiment provides is inhaled
The absorption ripple performance and fire resistance of ripple porous material are detected, and testing result is：Absorbing property is in 4GHz~20GHz frequencies
In the range of be less than -48 db, the fire resistance that above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material reaches HF-1 levels.
Embodiment 5
The embodiment of the present invention provides a kind of polyurethane barium titanate composite flame-proof and inhales ripple porous material, its by following mass parts component
Aggregated reaction obtains：100 parts of PPG, 70 parts of toluene di-isocyanate(TDI), 0.4 part of nano carbon sol, Nano carbon white
0.5 part, 20 parts of deionized water, 25 parts of methyl-phosphoric acid dimethyl ester, 10 parts of carboxyl multi-walled carbon nanotube, 20 parts of barium titanate, nano oxygen
Change 5 parts of zinc, 3 parts of nanometer tungsten oxide, 8 parts of Firebrake ZB, 0.4 part of stannous octoate, 0.6 part of triethylene diamine, organosilicone surfactant
3 parts of agent, 8 parts of sodium acid carbonate.
The embodiment of the present invention also provides the preparation method that a kind of above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material,
The preparation method and the preparation method that embodiment 1 provides are essentially identical, and 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, obtains the above-mentioned compound resistance of polyurethane barium titanate
Burn and suck ripple porous material.
Performance test
Using the identical method with being provided in embodiment 1, the polyurethane barium titanate composite flame-proof that above-described embodiment provides is inhaled
The absorption ripple performance and fire resistance of ripple porous material are detected, and testing result is：Absorbing property is in 4GHz~20GHz frequencies
In the range of be less than -46 db, the fire resistance that above-mentioned polyurethane barium titanate composite flame-proof inhales ripple porous material reaches 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 barium titanate composite flame-proof inhales ripple porous material, it is characterised in that it is passed through by the component of following mass parts
Polymerisation obtains：100 parts of PPG, 20~70 parts of toluene di-isocyanate(TDI), 0.05~0.4 part of nano carbon sol, receive
0.2~0.5 part of off-white carbon black, 10~20 parts of deionized water, 5~25 parts of methyl-phosphoric acid dimethyl ester, carboxyl multi-walled carbon nanotube 2~
10 parts, 10~20 parts of barium titanate, 1~5 part of nano zine oxide, 1~3 part of nanometer tungsten 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, 2~8 parts 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 barium titanate composite flame-proof according to claim 1 inhales ripple porous material, it is characterised in that it is by following
The aggregated reaction of component of mass parts obtains：100 parts of PPG, 40~50 parts of toluene di-isocyanate(TDI), nano carbon sol
0.15~0.25 part, 0.3~0.4 part of Nano carbon white, 13~17 parts of deionized water, 10~20 parts of methyl-phosphoric acid dimethyl ester, carboxylic
4~8 parts of Quito wall carbon nano tube, 13~17 parts of barium titanate, 2~4 parts of nano zine oxide, 1.5~2.5 parts of nanometer tungsten oxide, boron
Sour 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,
4~6 parts of sodium acid carbonate.
3. the polyurethane barium titanate composite flame-proof described in a kind of claim 1 or 2 inhales the preparation method of ripple porous material, it includes
Following steps：
Raw material mixes：By PPG, methyl-phosphoric acid dimethyl ester, nano carbon sol, Nano carbon white, barium titanate, Firebrake ZB,
Stannous octoate, triethylene diamine, deionized water, organic silicon surfactant are stirred at room temperature uniformly, then through ultrasonic disperse
Processing obtains first mixture；
Reaction foaming：First toluene di-isocyanate(TDI), nano zine oxide and nanometer tungsten oxide are added into the first mixture simultaneously
Ultrasonic agitation 15~30 minutes, adds carboxyl CNT and sodium acid carbonate, then pours into mould rapidly and carries out room temperature foaming
30~90 minutes, obtain absorbing material gel；
Freeze-drying：The absorbing material gel be freeze-dried and produces the polyurethane barium titanate composite flame-proof to inhale ripple more
Porous materials.
4. polyurethane barium titanate composite flame-proof according to claim 3 inhales the preparation method of ripple porous material, its feature exists
In described the step of reacting foaming includes：In the presence of ultrasonic agitation, first by toluene di-isocyanate(TDI), nano zine oxide and
It is more to add carboxyl 15~30 minutes in the first mixture is added under conditions of heating while stirring for nanometer tungsten oxide
Wall carbon nano tube and sodium acid carbonate；Then mould is poured into rapidly and carries out room temperature foaming 30~90 minutes, obtains the absorbing material
Gel.
5. polyurethane barium titanate composite flame-proof according to claim 4 inhales the preparation method of ripple porous material, its feature exists
In in the step of raw material mixes, the ultrasonic disperse processing is carried out in a water bath.
6. the polyurethane barium titanate composite flame-proof according to claim 3 or 4 or 5 any one inhales the preparation side of ripple porous material
Method, it is characterised in that include the step of the freeze-drying：First the absorbing material gel is freezed 10~70 hours, freezing
Temperature is 5~50 DEG C below mixed solution freezing point 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610854192.1A CN107868213A (en) | 2016-09-23 | 2016-09-23 | Polyurethane barium titanate composite flame-proof inhales ripple porous material and preparation method thereof |
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|---|---|---|---|
| CN201610854192.1A CN107868213A (en) | 2016-09-23 | 2016-09-23 | Polyurethane barium titanate composite flame-proof inhales ripple porous material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116253852A (en) * | 2022-12-22 | 2023-06-13 | 苏州羽燕新材料科技有限公司 | Preparation method of modified thermoplastic polyurethane elastomer |
-
2016
- 2016-09-23 CN CN201610854192.1A patent/CN107868213A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116253852A (en) * | 2022-12-22 | 2023-06-13 | 苏州羽燕新材料科技有限公司 | Preparation method of modified thermoplastic polyurethane elastomer |
| CN116253852B (en) * | 2022-12-22 | 2024-05-03 | 苏州羽燕特种材料科技有限公司 | Preparation method of modified thermoplastic polyurethane elastomer |
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Application publication date: 20180403 |