CN106554717B - A kind of metal surface coating antiradar coatings and preparation method thereof - Google Patents
A kind of metal surface coating antiradar coatings and preparation method thereof Download PDFInfo
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract
The invention discloses a kind of metal surface coating antiradar coatings and preparation method thereof.The antiradar coatings are made of the raw material of following parts by weight：2~5 parts of sodium bentonite, 20~25 parts of wave absorbing agent, 15~20 parts of modified organic silicone resin, 5~9 parts of silane coupling agent, 1~3 part of Catalyzed by Formic Acid agent, 25~33 parts of tetrahydrofuran diluent, benzoyl peroxide curing dose 5~8 parts, 15~20 parts of ethyl alcohol, 5~8 parts of deionized water；0.5~1 part of silicone oil antifoaming agent.Wave absorbing agent in the antiradar coatings of the present invention is the attapulgite clay suspension with polymolecularity, carbon nanotube is adsorbed again, pass through chemical plating fluid, in recessed soil/carbon nanopowder plating metal on surface ion, prepare the excellent composite powder of absorbing property, the excellent antiradar coatings of absorbing property are prepared under organic siliconresin and curing agent effect, one layer of antiradar coatings are coated in metal surface, it is strong with absorbing, bands of a spectrum are wide, it can realize to absorption of the electromagnetic wave in the range of 5 18GHz up to 90%, its highest reflection loss can reach 51dB (8GHz), and the coating can bear working environment of the high temperature metal piece at 700 DEG C, keep preferable absorbing property.
Description
Technical field
The present invention relates to inorganic functional material technical fields, and in particular to a kind of metal surface coating antiradar coatings and its
Preparation method.
Background technology
With the development of science and technology, influence of the electromagenetic wave radiation to environment increasingly increases, and is generated therefrom for inhaling wave
The demand of material and shielding material is also increasingly prosperous.On airport, airplane flight is overdue when Electromagnetic Interference can not take off；It is curing
Institute, mobile phone can often interfere the normal work of various electronic instrument for diagnosing and curing diseases devices.In future high-tech, three-dimensional war, weapon
Equipment is faced with detection and the anti-severe challenge detected at any time.Absorbing material is the key technology in stealth technology, will inhale wave material
The research that material introduces stealth technology is paid much attention to by countries in the world, meanwhile, it is in military affairs for fighter plane, guided missile, army
The stealthy needs of the military equipments such as warship, the demand to being capable of absorbing radar wave material is also increasingly urgent, therefore, no matter for military
Or commercial market, the demand of absorbing material in practical applications are all relatively more urgent.Some researches show that apply on weapon system surface for oneself
Electromagnetic wave signal can effectively be reduced by covering absorbing material, reach stealth effect, the Lijima hairs in Japan NEC laboratories in 1991
Carbon nanotube is showed, there is potential application value in electromagnetic shielding and absorbing material field, but use carbon nanotube merely
As wave absorbing agent, ideal dielectric loss can be reached, but to the magnetic loss very little of electromagnetic wave, while carbon nanotube is close
It is aqueous poor, easily reunite when preparing absorbing material, and easy firing is lost under the conditions of 500 DEG C of high temperature airs, and in aircraft
The metal parts of the high temperature positions such as jet pipe, operating temperature easily lose suction using carbon nanotube merely often at 700 DEG C or more
Wave performance.Patent (CN104479626B) disclose a kind of graphite multi-walled carbon nano-tube/Nanocomposites wave absorbing agent and its
Preparation method has good absorbing property, but washes away lower coating in the air of high temperature and high speed and easily peel off, and seriously affects material
Absorbing property.
Invention content
The purpose of the present invention is being directed to this problem of the prior art, a kind of metal surface coating antiradar coatings are provided
And preparation method thereof.Carbon nanotube and heat safe recessed native powder are combined by this method, and it is excellent and have to prepare absorbing property
There is preferable durothermic wave absorbing agent, then will be filled in antiradar coatings together with the wave absorbing agent and other components, made it have very
Good performance of absorbing electromagnetic wave.
Realizing the technical solution of foregoing invention purpose is：
A kind of metal surface coating antiradar coatings, are made of the raw material of following parts by weight：
2~5 parts of sodium bentonite,
20~25 parts of wave absorbing agent,
15~20 parts of modified organic silicone resin,
5~9 parts of silane coupling agent,
1~3 part of Catalyzed by Formic Acid agent,
25~33 parts of tetrahydrofuran diluent,
Benzoyl peroxide curing dose 5~8 parts,
15~20 parts of ethyl alcohol,
5~8 parts of deionized water；
0.5~1 part of silicone oil antifoaming agent.
Further, for recessed soil matrix wave absorbing agent, (prepared by concave-convex base wave absorbing agent summarizes the wave absorbing agent, checks whether description is accurate
Really), it is to be combined carbon nanotube and heat safe recessed native powder, lives particular by common attapulgite clay
Change, decentralized processing, obtain the excellent attapulgite clay suspension of activity function, be added into a certain amount of carbon nanotube, utilization is recessed
The activated adoption carbon nanotube on native surface obtains one-dimensional carbon nanotube/recessed native stick soil composite granule, then is existed by chemical plating
Attached metal ion is plated on composite powder surface, by obtaining recessed soil matrix wave absorbing agent after centrifugation, drying and processing；The carbon nanotube
Weight account for the 10~20% of Concave-convex clay rod powder weight.
Wherein, the activation, decentralized processing are specifically that attapulgite clay is small with blender stirring 2~4 in distilled water
When, it is that lmol/L hydrochloric acid is handled 1~3 hour in 80~100 DEG C with solubility；By treated, suspension adds in 5~10ml's
Composite reactive agent, then the pH value of NaOH solution adjustment suspension is added dropwise to 6~8, then with cross stirring knife blender with 1500 revs/min
After stirring 2~4 hours, static 10 hours, attapulgite clay suspension is isolated.
The composite reactive agent includes organic compound and nonionic surfactant, the organic compound and nonionic
The volume ratio of surfactant is 1:1~1:2.
Organic compound is organopolysiloxane or organic carboxyl acid；Nonionic surface active agent is alkylphenol-polyethenoxy
Ether type activating agent (OP-10) type, sorbitan fatty acid ester type activating agent (S80) type or Tween-20 type.
Organopolysiloxane is preferably epoxy based polysiloxane；Machine carboxylic acid be stearic acid, hexanedioic acid；It is preferred that stearic acid；It is non-
Ionic surfactant is preferably alkyl phenol polyoxyethylene ether type activating agent (OP-10) type.
The chemistry plating refers to add in temperature strip of the chemical plating fluid at 70~90 DEG C in attapulgite clay suspension
Under part, after reacting 1~2h under conditions of ultrasonic disperse, 10~20min is stood；The chemical plating fluid is to add in deionized water
The calgon of 10~20g and the nickel sulfate of 20~40g, pH=8.5~10 that titration ammonium hydroxide adjusts the chemical plating fluid are obtained
Obtain chemical plating fluid.
Further, it according to weight ratio is 1 that the modified organic silicone resin, which is organic siliconresin and phenolic resin,：1 carries out object
Reason is mixed with and obtains.
Further, the silane coupling agent selects vinyltrimethoxysilane or γ-(methacryloxypropyl) propyl three
Any one of methoxy silane or γ-glycidyl ether trimethoxy silane.
The present invention also provides the preparation method of above-mentioned antiradar coatings, including step in detail below：
(1) prepare raw material by following portions by weight：2~5 parts of sodium bentonite, 20~25 parts of wave absorbing agent, modified organic silicon
15~20 parts of resin, 5~9 parts of silane coupling agent, 1~3 part of Catalyzed by Formic Acid agent, 25~33 parts of tetrahydrofuran diluent, peroxidating
5~8 parts of benzoyl curing agent, 15~20 parts of ethyl alcohol, 5~8 parts of deionized water；0.5~1 part of silicone oil antifoaming agent.
(2) silane coupling agent is put in the reactor, adds in deionized water, absolute ethyl alcohol and Catalyzed by Formic Acid agent, adjust pH
It is 9~10 to be worth, and after stirring makes each phase uniformly miscible, carries out sonic oscillation 1h~3h, then in 35 DEG C of water-baths reaction to gel
Shape, in gel add in tetrahydrofuran diluent make gel dissolve after, add in modified organic silicone resin, with magnetic stirrer with
The rotating speed of 188~250r/min stirs 0.5~1h, forms slurry A, for use.
(3) wave absorbing agent and sodium bentonite are added in the slurry A that step 2 obtains, it is abundant with cross stirring knife blender
Stirring, mixing speed are 1500~3000 revs/min, and mixing time is 1~2h, forms slurry B, for use.
(4) curing agent, antifoaming agent are added in the slurry B that step 3 obtains, with magnetic stirrer with 188~250r/min
Rotating speed stir 0.5~1h after, just obtain the antiradar coatings through vacuum de-soak.
The present invention has the following advantages compared with prior art：
Most of magnetic absorbent can lose absorbing property, cause high temperature in the high temperature environment since Curie temperature is relatively low
Absorbing material only relies on electrical loss mechanism and carrys out absorbing radar wave, and the wave absorbing agent in the antiradar coatings of the present invention is with polymolecularity
Attapulgite clay suspension, then adsorb carbon nanotube, by chemical plating fluid, in recessed soil/carbon nanopowder plating metal on surface ion,
The excellent composite powder of absorbing property is prepared, the excellent suction of absorbing property is prepared under organic siliconresin and curing agent effect
Wave coating coats one layer of antiradar coatings in metal surface, has and absorb by force, bands of a spectrum are wide, can realize to electromagnetism in the range of 5-18GHz
Wave is up to 90% absorption, and highest reflection loss can reach -51dB (8GHz), and the coating can bear high temperature metal piece and exist
700 DEG C of working environment keeps preferable absorbing property.
Specific embodiment
A kind of metal surface coating antiradar coatings, are made of the raw material of following parts by weight：
2~5 parts of sodium bentonite,
20~25 parts of wave absorbing agent,
15~20 parts of modified organic silicone resin,
5~9 parts of silane coupling agent,
1~3 part of Catalyzed by Formic Acid agent,
25~33 parts of tetrahydrofuran diluent,
Benzoyl peroxide curing dose 5~8 parts,
15~20 parts of ethyl alcohol,
5~8 parts of deionized water；
0.5~1 part of silicone oil antifoaming agent.
The preparation method of the wave absorbing agent is：
1st, weighing 100g fineness is put into 800~1000ml distilled water for the attapulgite clay of 200~400 mesh and uses blender
Stirring 2~4 hours, the 50~100ml hydrochloric acid for being lmol/L with solubility is handled 1~3 hour in 80~100 DEG C；After handling
Suspension add in the stearic acid of 5~10ml, then the pH value of NaOH solution adjustment suspension is added dropwise to 6~8, then with cross stirring knife
After blender is stirred 2~4 hours, static 10 hours with 1500 revs/min, attapulgite clay suspension is isolated；
2nd, 10~20g carbon nanotubes are added in into the above-mentioned attapulgite clay suspension isolated, utilize recessed native surface
Activated adoption carbon nanotube after 10~30min stirrings, obtains attapulgite clay suspension；
3rd, the calgon of 10~20g and the nickel sulfate of 20~40g are added in the deionized water of 500ml, titrates ammonia
Water adjusts pH=8.5~10 of the chemical plating fluid, obtains chemical plating fluid；
4th, chemical plating fluid is added under 70~90 DEG C of temperature condition in attapulgite clay suspension, the condition of ultrasonic disperse
After 1~2h of lower reaction, 10~20min is stood, with centrifugal treating 2-5 times in centrifuge, 5 minutes every time, solids is recovered by filtration；
5th, the solids of recycling is dried for 24 hours at 70~100 DEG C, it is finely ground with agate mortar, it is excellent to obtain absorbing property
Composite granule；
It according to weight ratio is 1 that the modified organic silicone resin, which is organic siliconresin and phenolic resin,：1 carries out physical mixed system
It is standby and obtain.
The silane coupling agent selects vinyltrimethoxysilane or γ-(methacryloxypropyl) propyl trimethoxy silicon
Any one of alkane or γ-glycidyl ether trimethoxy silane.
The preparation method of above-mentioned antiradar coatings, including step in detail below：
(1) prepare raw material by following portions by weight：2~5 parts of sodium bentonite, 20~25 parts of wave absorbing agent, modified organic silicon
15~20 parts of resin, 5~9 parts of silane coupling agent, 1~3 part of Catalyzed by Formic Acid agent, 25~33 parts of tetrahydrofuran diluent, peroxidating
5~8 parts of benzoyl curing agent, 15~20 parts of ethyl alcohol, 5~8 parts of deionized water；0.5~1 part of silicone oil antifoaming agent.
(2) silane coupling agent is put in the reactor, adds in deionized water, absolute ethyl alcohol and Catalyzed by Formic Acid agent, adjust pH
It is 9~10 to be worth, and after stirring makes each phase uniformly miscible, carries out sonic oscillation 1h~3h, then in 35 DEG C of water-baths reaction to gel
Shape, in gel add in tetrahydrofuran diluent make gel dissolve after, add in modified organic silicone resin, with magnetic stirrer with
The rotating speed of 188~250r/min stirs 0.5~1h, forms slurry A, for use.
(3) wave absorbing agent and sodium bentonite are added in the slurry A that step 2 obtains, it is abundant with cross stirring knife blender
Stirring, mixing speed are 1500~3000 revs/min, and mixing time is 1~2h, forms slurry B, for use.
(4) curing agent, antifoaming agent are added in the slurry B that step 3 obtains, with magnetic stirrer with 188~250r/min
Rotating speed stir 0.5~1h after, just obtain the antiradar coatings through vacuum de-soak.
With reference to embodiment, the invention will be further described:
Embodiment 1：
A kind of metal surface coating antiradar coatings, are made of the raw material of following parts by weight：
2 parts of sodium bentonite, 20 parts of wave absorbing agent, 20 parts of modified organic silicone resin,
5 parts of silane coupling agent, 3 parts of Catalyzed by Formic Acid agent, 33 parts of tetrahydrofuran diluent,
Benzoyl peroxide curing dose 8 parts, 20 parts of ethyl alcohol, 8 parts of deionized water；0.5 part of silicone oil antifoaming agent.The gold
The preparation method of metal surface coating antiradar coatings, includes the following steps：
(1), silane coupling agent is put in the reactor, deionized water and absolute ethyl alcohol is poured into blender, added
First acid as catalyst adjusts pH value to 10, adopts and stir 2h, mixing speed 350r/min using electric blender, make each mutually equal
It is even it is miscible after, solution is sealed, supersonic wave cleaning machine carry out sonic oscillation 1h, be finally placed in 35 DEG C of water-baths react to
Gel, in gel adding in tetrahydrofuran (THF) makes its dissolving, adds in modified organic silicone resin, be put into magnetic stirrer with
The rotating speed stirring 1h of 200r/min, for use；
(2), wave absorbing agent, sodium bentonite are put into the mixed system of step (2), it is abundant with cross stirring knife blender
Stirring, mixing speed are 1500 revs/min, and mixing time is 1~2h, for use；
(3), the mixed system for obtaining step (2) adds in curing agent, and antifoaming agent is put into magnetic stirrer with 188r/min
Rotating speed stirring 1h, the slurry after stirring is obtained into antiradar coatings after vacuum de-soak.
Table 1 show the performance indicator of the antiradar coatings prepared by embodiment 1
Antiradar coatings prepared by embodiment 1 are coated in metal surface, measuring can realize to electromagnetism in the range of 5-18GHz
Absorption of the wave up to 90%, highest reflection loss can reach -51dB (8GHz).
Embodiment 2：
A kind of metal surface coating antiradar coatings, are made of the raw material of following parts by weight：
4 parts of sodium bentonite, 22 parts of wave absorbing agent, 22 parts of modified organic silicone resin,
7 parts of silane coupling agent, 2 parts of Catalyzed by Formic Acid agent, 30 parts of tetrahydrofuran diluent,
Benzoyl peroxide curing dose 6 parts, 18 parts of ethyl alcohol, 6 parts of deionized water；0.8 part of silicone oil antifoaming agent.The gold
The preparation method of metal surface coating antiradar coatings, includes the following steps：
(1), silane coupling agent is put in the reactor, deionized water and absolute ethyl alcohol is poured into blender, added
The first acid as catalyst of 3g adjusts pH value to 9, adopts and stir 4h using electric blender, mixing speed 350r/min makes each phase
Uniformly it is miscible after, solution is sealed, ultrasonic cleaning agent carry out sonic oscillation 3h, be finally placed in 35 DEG C of water-baths and react
To gel, tetrahydrofuran (THF) is added in gel makes its dissolving, and addition modified organic silicone resin is put into magnetic stirrer
1h is stirred with the rotating speed of 1250r/min, for use；
(2), wave absorbing agent, sodium bentonite are put into the mixed system of step (2), it is abundant with cross stirring knife blender
Stirring, mixing speed are 3000 revs/min, mixing time 2h, for use；
(3), the mixed system for obtaining step (2) adds in curing agent, and antifoaming agent is put into magnetic stirrer with 250r/min
Rotating speed stirring 1h, the slurry after stirring is obtained into antiradar coatings after vacuum de-soak.
Embodiment 3：
A kind of metal surface coating antiradar coatings, are made of the raw material of following parts by weight：
5 parts of sodium bentonite, 25 parts of wave absorbing agent, 15 parts of modified organic silicone resin,
9 parts of silane coupling agent, 1 part of Catalyzed by Formic Acid agent, 25 parts of tetrahydrofuran diluent,
Benzoyl peroxide curing dose 5 parts, 15 parts of ethyl alcohol, 5 parts of deionized water；1 part of silicone oil antifoaming agent.
The preparation method of the metal surface coating antiradar coatings, includes the following steps：
(1), silane coupling agent is put in the reactor, deionized water and absolute ethyl alcohol is poured into blender, added
The first acid as catalyst of 3g adjusts pH value to 9, adopts and stir 4h using electric blender, mixing speed 350r/min makes each phase
Uniformly it is miscible after, solution is sealed, ultrasonic cleaning agent carry out sonic oscillation 3h, be finally placed in 35 DEG C of water-baths and react
To gel, tetrahydrofuran (THF) is added in gel makes its dissolving, and addition modified organic silicone resin is put into magnetic stirrer
1h is stirred with the rotating speed of 1250r/min, for use；
(2), wave absorbing agent, sodium bentonite are put into the mixed system of step (2), it is abundant with cross stirring knife blender
Stirring, mixing speed are 3000 revs/min, mixing time 2h, for use；
(3), the mixed system for obtaining step (2) adds in curing agent, and antifoaming agent is put into magnetic stirrer with 250r/min
Rotating speed stirring 1h, the slurry after stirring is obtained into antiradar coatings after vacuum de-soak.
Claims (9)
1. a kind of metal surface coating antiradar coatings, which is characterized in that be made of the raw material of following parts by weight：
2 ~ 5 parts of sodium bentonite,
20 ~ 25 parts of wave absorbing agent,
15 ~ 20 parts of modified organic silicone resin,
5 ~ 9 parts of silane coupling agent,
1 ~ 3 part of Catalyzed by Formic Acid agent,
25 ~ 33 parts of tetrahydrofuran diluent,
Benzoyl peroxide curing dose 5 ~ 8 parts,
15 ~ 20 parts of ethyl alcohol,
5 ~ 8 parts of deionized water；
0.5 ~ 1 part of silicone oil antifoaming agent；
The wave absorbing agent is recessed soil matrix wave absorbing agent, is to be combined carbon nanotube and heat safe attapulgite clay powder, specifically
Be by being activated to common attapulgite clay, decentralized processing, obtain the excellent attapulgite clay suspension of activity function,
Be added into a certain amount of carbon nanotube, using the activated adoption carbon nanotube on attapulgite clay surface obtain one-dimensional carbon nanotube/
Attapulgite clay composite granule, then attached metal ion is plated on composite powder surface by chemical plating, by centrifuging, drying
Recessed soil matrix wave absorbing agent is obtained after processing；The weight of the carbon nanotube accounts for the 10~20% of attapulgite clay powder weight.
2. coating antiradar coatings in metal surface according to claim 1, which is characterized in that the activation, decentralized processing
Specifically attapulgite clay in distilled water with blender is stirred 2~4 hours, is lmol/L hydrochloric acid 80~100 with solubility
It is handled 1~3 hour in DEG C；By treated, suspension adds in the composite reactive agent of 5~10mL, then NaOH solution adjustment is added dropwise and hangs
The pH value of supernatant liquid to 6~8, then with cross stirring knife blender with 1500 revs/min stirring 2~4 hours, static 10 hours after, separation
Go out attapulgite clay suspension.
3. coating antiradar coatings in metal surface according to claim 2, which is characterized in that the composite reactive agent includes
The volume ratio of organic compound and nonionic surfactant, the organic compound and nonionic surfactant is 1:1~
1:2。
4. coating antiradar coatings in metal surface according to claim 3, which is characterized in that organic compound is organic poly-
Siloxanes or organic carboxyl acid；Nonionic surface active agent is alkyl phenol polyoxyethylene ether type activating agent（OP-10）Type, dehydration mountain
Pears polyol fatty acid ester type activating agent（S80）Type or Tween-20 type.
5. coating antiradar coatings in metal surface according to claim 4, which is characterized in that organopolysiloxane is epoxy
Based polysiloxane；Organic carboxyl acid is stearic acid or hexanedioic acid；Nonionic surface active agent is lived for alkyl phenol polyoxyethylene ether type
Property agent（OP-10）Type.
6. coating antiradar coatings in metal surface according to claim 1, which is characterized in that the chemistry plating refers to
Chemical plating fluid is added in attapulgite clay suspension under 70~90 DEG C of temperature condition, is reacted under conditions of ultrasonic disperse
After 1~2h, 10~20min is stood；The chemical plating fluid be in deionized water add in 10~20g calgon and 20~
The nickel sulfate of 40g, titration ammonium hydroxide adjust the chemical plating fluid
PH=8.5 ~ 10 obtain chemical plating fluid.
7. coating antiradar coatings in metal surface according to claim 1, which is characterized in that the modification has
It according to weight ratio is 1 that machine silicones, which is organic siliconresin and phenolic resin,：1 progress physical mixed is prepared.
8. coating antiradar coatings in metal surface according to claim 1, which is characterized in that state silane coupling agent and select second
Alkenyl trimethoxy silane or γ-(methacryloxypropyl) propyl trimethoxy silicane or γ-glycidyl ether trimethoxy
Any one of silane.
9. the preparation method of any metal surface coating antiradar coatings of claim 1 ~ 8, which is characterized in that
Specifically include following steps：
（1）Prepare raw material by following portions by weight：2 ~ 5 parts of sodium bentonite, 20 ~ 25 parts of wave absorbing agent, modified organic silicone resin 15 ~
20 parts, 5 ~ 9 parts of silane coupling agent, 1 ~ 3 part of Catalyzed by Formic Acid agent, 25 ~ 33 parts, benzoyl peroxide curing dose of tetrahydrofuran diluent
5 ~ 8 parts, 15 ~ 20 parts of ethyl alcohol, 5 ~ 8 parts of deionized water；0.5 ~ 1 part of silicone oil antifoaming agent；
（2）Silane coupling agent is put into reactor, adds in deionized water, absolute ethyl alcohol and Catalyzed by Formic Acid agent, it is 9 to adjust pH value
~ 10, after stirring makes each phase uniformly miscible, sonic oscillation 1h ~ 3h is carried out, then reaction is to gel in 35 DEG C of water-baths, solidifying
After addition tetrahydrofuran diluent dissolves gel in glue, modified organic silicone resin is added in, with magnetic stirrer with 188 ~ 250r/
The rotating speed of min stirs 0.5 ~ 1h, forms slurry A, for use；
（3）Wave absorbing agent and sodium bentonite are added in the slurry A that step 2 obtains, are sufficiently stirred with cross stirring knife blender,
Mixing speed is 1500 ~ 3000 revs/min, and mixing time is 1 ~ 2h, forms slurry B, for use；
（4）Curing agent, antifoaming agent are added in the slurry B that step 3 obtains, with magnetic stirrer with the rotating speed of 188 ~ 250r/min
After stirring 0.5 ~ 1h, the antiradar coatings are just obtained through vacuum de-soak.
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| CN109705695A (en) * | 2017-10-26 | 2019-05-03 | 深圳光启高等理工研究院 | Wave penetrating paint and preparation method thereof |
| CN108002365A (en) * | 2018-02-01 | 2018-05-08 | 广东工业大学 | A kind of method of dispersing Nano carbon tubes |
| CN111286253A (en) * | 2018-12-06 | 2020-06-16 | 洛阳尖端技术研究院 | Epoxy rubber wave-absorbing coating and preparation method thereof |
| CN113769718A (en) * | 2021-08-31 | 2021-12-10 | 南京信息工程大学 | Adsorption drying agent and preparation method thereof |
| CN115627119B (en) * | 2022-10-11 | 2023-06-20 | 航天特种材料及工艺技术研究所 | Light temperature-resistant heat-insulating stealth coating, coating and preparation method thereof |
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