CN106221533A - A kind of nanoparticle modified polyurethane resin base aircraft coating - Google Patents
A kind of nanoparticle modified polyurethane resin base aircraft coating Download PDFInfo
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- CN106221533A CN106221533A CN201510859192.6A CN201510859192A CN106221533A CN 106221533 A CN106221533 A CN 106221533A CN 201510859192 A CN201510859192 A CN 201510859192A CN 106221533 A CN106221533 A CN 106221533A
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Abstract
The present invention relates to a kind of nanoparticle modified polyurethane resin base aircraft coating for aircraft application, by through the rutile-type that purity is 50.00% ~ 99.99% of KH550/KH560/KH570 silane surface treatment or anatase type nano titanium dioxide (i.e. TiO2Nano powder), and silica nanometer powder (the i.e. SiO that purity is 50.00% ~ 99.99% through KH550/KH560/KH570 silane surface treatment2Nano powder) and polyurethane resin composition, the content of whole nanoparticles is the 0.10% ~ 60.00% of coating material gross mass；The nanometer particle-modified coating of preparation disclosure satisfy that the aircraft ultraviolet-resistant aging performance requirements to coating such as aircraft, unmanned plane, sounding rocket；Avoid using high volatile aids, it is ensured that modified coating disclosure satisfy that during preparationRoHSAnd the requirement of the aspect such as airworthiness.
Description
Technical field
The present invention relates to a kind of aircraft coating, be specifically related to a kind of nanoparticle modified polyurethane resin base aircraft coating for aircraft application.
Background technology
Relative to the structural metallic materials used by conventional aircraft, fiber-reinforced resin matrix compound material has the advantages such as the designability of high-strength light, corrosion-resistant, endurance and excellence, thus the consumption of fiber-reinforced resin matrix compound material increases sharply on the airframe structure of contemporary aircraft, come out many types of main use glass fiber reinforced epoxy resin (Glass Fiber reinforce
Epoxy Polymer, GFEP) and carbon-fibre reinforced epoxy resin (Carbon Fiber reinforce Epoxy Polymer, CFEP) composite as the aircraft of airframe structure.In the middle of this type of aircraft, flourish light aerocraft and unmanned plane occupy the biggest ratio, and typical case's type includes the western sharp SR20 of the U.S., Austria diamond DA40, China roc CW-20 etc..Owing to the matrix resin of fiber-reinforced resin matrix compound material belongs to macromolecular material, compared with metal fuselage structures, the ultraviolet-resistant aging ability of GFEP and CFEP airframe structure is relatively low.Meanwhile; various aircraft must the medium-term and long-term use of environment in the open; if the performance that airframe structure does not carries out the coating ultraviolet aging resistance of coating protection or coating protection used is the best; there is aging and performance degradation in the structural material easily causing GFEP and CFEP airframe structure aircraft; airframe structure even can be caused to damage time serious, relevant aviation operation is caused safely potential threat.
The sticky suspension that aircraft coating is made up of base material, pigment, filler, solvent and auxiliary agent etc..Aircraft coating is coated on aircraft surface and forms one layer of tough and tensile film, aircraft is played decoration and the effect of integrated protection.Traditional micron is a kind of common pigments in aircraft coating to rutile-type and the Detitanium-ore-type titanium dioxide of submicron order particle diameter, it not only makes aircraft coating have certain covering power, give the effect that film is attractive in appearance and decorates, mechanical strength and the adhesive force of film can also be strengthened, prevent crackle, and coating thickness can be increased, prevent penetrating of moisture etc..But, when the nanoparticles such as ultraviolet-resistant aging ability more preferably nanometer titanium dioxide are added to aircraft coating is used as filler time, owing to the particle diameter of nanoparticle is little, surface area big, surface can be big, it is easy to reunite, usually show hydrophilic oleophobic property plus nanoparticle, there is the strongest polarity, be difficult to be uniformly dispersed in Organic substance, and low with resin matrix adhesion, easily cause defect and the performance of film is reduced.Nano level inorganic particle is made to play one's part to the full in aircraft coating organic system, it is necessary to make powder body fully dispersed in organic media.In order to reach this purpose, generally require the apparent condition changing inorganic particle, the hydrophilic making its surface is changed into hydrophobicity (lipophile), the series of properties such as the now absorption of nanoparticle, moistening, dispersion all can significantly change, so that being substantially improved through the rheological characteristic of nanometer particle-modified aircraft coating and the stability of system, inorganic matter/organic combination interface microstructure simultaneously obtains and improves, so that the mechanical property of its film and physical function are the most significantly strengthened.Based on this principle, the nanoparticles such as the nanometer titanium dioxide changing apparent condition are used to carry out the resin matrix of modified aircraft coating, the weather resistance of combination property particularly its ultraviolet-resistant aging of aircraft coating can be improved, keep the gloss of aircraft coating film for a long time, significantly postpone the aging of aircraft coating film, extend the paint film life-span.
Summary of the invention
In order to make up existing aircraft coating deficiency in terms of fiber-reinforced resin base aircraft fuselage structures ultraviolet aging resistance ability, improve the combination property of aircraft coating, the present invention provides a kind of novel aircraft coating, this aircraft coating not only ultraviolet aging resistance ability is good, and has higher environment friendly and strengthen the combination properties such as coating strength.
By preparing the aircraft coating with good ultraviolet aging resistance ability, the present invention be the technical scheme is that the nanoparticle through silane surface treatment carries out proportioning and preparation with polyurethane resin matrix according to certain technological process.
Above-mentioned for aircraft application nanoparticle modified polyurethane resin base aircraft coating, the content of whole nanoparticles is the 0.10% ~ 60.00% of coating material gross mass
Above-mentioned for aircraft application nanoparticle modified polyurethane resin base aircraft coating, nanoparticle used is the rutile-type that purity is 50.00% ~ 99.99% through silane surface treatment or anatase type nano titanium dioxide (i.e. TiO2Nano powder), and silica nanometer powder (the i.e. SiO that purity is 50.00% ~ 99.99% through silane surface treatment2Nano powder).
Above-mentioned for aircraft application nanoparticle modified polyurethane resin base aircraft coating, its preparation method comprises the following steps: nanoparticle KH550/KH560/KH570 silane is carried out the step of surface process by (1)；(2) step of modified aircraft coating it is mixed with nanoparticle and the polyurethane resin through silane surface treatment.
Above-mentioned for aircraft application nanoparticle modified polyurethane resin base aircraft coating, in step (1), certain rotating speed stir under in a certain amount of petroleum ether add KH550/KH560/KH570 silane.Stirred by the dispersion machine of certain rotating speed, and make silane be scattered in petroleum ether to form uniform liquid-phase system with ultrasound wave dispersion, a certain amount of nanoparticle powder body adds and is scattered in this liquid-phase system forming aaerosol solution.Ultrasonic disperse 5 minutes, ultrasonic disperse 10 minutes again after 2 minutes interval times.Design temperature 90 DEG C carries out heated at constant temperature to liquid-phase system, stirs simultaneously, until liquid volatilizees completely, obtains fluffy powder body, be the nanoparticle through silane surface treatment after being then dried 1.5 hours with 60 DEG C in vacuum dryer by material.
Above-mentioned for aircraft application nanoparticle modified polyurethane resin base aircraft coating, in step (2), a certain amount of nanoparticle powder body through silane surface treatment and auxiliary agent are added in polyurethane resin, stirred by the dispersion machine of certain rotating speed, ultrasonic disperse 10 ~ 60 minutes, sand milling 30 minutes, paint vehicle is leached with 400 mesh drainage screens, then material is placed in vacuum froth breaking tank, and the enforcement vacuum froth breaking of 10 ~ 45 minutes, finally employing special container fill storage under certain vacuum degree.
The invention has the beneficial effects as follows:
There is in the range of the test of optical wavelength 10 ~ 400 nanometer the advantage that ultraviolet-resistant aging performance is good, it is possible to meet the aircraft ultraviolet-resistant aging performance requirements to coating such as aircraft, unmanned plane, sounding rocket.
Characterizing film outdoor hydrophilic (stain resistant) performance under visible ray exposed environments by test water contact angle, compared with the polyurethane aircraft coating of non-nano modification, hydrophilic (stain resistant) performance of nanocomposite coatings has had obvious improvement.
The preparation process of aircraft coating is avoided use high volatile aids, it is ensured that modified coating disclosure satisfy thatRoHSAnd the requirement of the aspect such as airworthiness.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment
1
Nanoparticle modified polyurethane resin base aircraft coating sprayed protection
SR20
Airframe wallboard sample
SR20 airframe wallboard is made up of galss fiber reinforced resin based composites, before carrying out application, being polished 5 minutes in wallboard sample panel surface by the Pneumatic grinding machine using the 120# emery wheel of elbow bend and 3 inch diameters, and clears up polishing region with vacuum cleaner.Prepare the nanometer particle-modified aircraft coating that Rutile type titanium dioxide nanoparticle content is coating material gross mass 20.00%, modified coating, supporting firming agent, supporting diluent are mixed according to the volume ratio of 2:1:1, under 1500 ~ 2000 revs/min of rotating speeds, makes various raw material mix homogeneously by dispersion machine.Coating to be mixed uses kettle formula spray gun on 1.2 millimeters of bores, under the pressure of 45PSI, its even application is being passed through the sample board surface polished after standing 1 ~ 15 minute, natural drying is after 48 hours, and now the thickness of dry coating is about 80 microns.
According to GB/T16422.2-1999 xenon source exposure test standard, use xenon lamp climatic test machine SR20 airframe wallboard sample (sample 1) after application is carried out artificial weathering test, using submicron order Rutile type titanium dioxide particle content be the aircraft coating application of coating material gross mass 20.00% R20 airframe wallboard (sample 2) as test comparison sample.At times the color value of sample is tested according to GB GB/T8424.1 ~ 3-2001.The relatively color situation of change before and after the accelerated ageing in 400 hours of xenon lamp weather, the value of chromatism of sample 1 is 1.26, and the value of chromatism of sample 2 is 10.15, and the value of chromatism of sample 1 is about the 12.40% of sample 2 value of chromatism.
Embodiment
2
Protection brushed by nanoparticle modified polyurethane resin base aircraft coating
CW-20
Unmanned aerial vehicle body wallboard sample
CW-20 unmanned aerial vehicle body wallboard is made up of galss fiber reinforced resin based composites, before carrying out application, being polished 5 minutes in wallboard sample panel surface by the Pneumatic grinding machine using the 120# emery wheel of elbow bend and 3 inch diameters, and clears up polishing region with vacuum cleaner.Prepare the nanometer particle-modified aircraft coating that Detitanium-ore-type titanium dioxide nanoparticle content is coating material gross mass 4.00%, modified coating, supporting firming agent, supporting diluent are mixed according to the volume ratio of 2:1:1, under 1500 ~ 2000 revs/min of rotating speeds, makes various raw material mix homogeneously by dispersion machine.Coating to be mixed uses hairbrush it uniformly to be brushed on the sample board surface through polishing after standing 1 ~ 15 minute, and natural drying is after 48 hours, and now the thickness of dry coating is about 120 microns.
According to GB/T16422.2-1999 xenon source exposure test standard, use xenon lamp climatic test machine CW-20 unmanned aerial vehicle body wallboard sample (sample 3) after application is carried out artificial weathering test, using submicron order Rutile type titanium dioxide particle content be the aircraft coating application of coating material gross mass 20.00% CW-20 unmanned aerial vehicle body wallboard sample (sample 4) as test comparison sample.The relatively water droplet contact angle situation of change before and after the accelerated ageing in 200 hours of xenon lamp weather, the water droplet contact angle of sample 3 is 9 °, the water droplet contact angle of sample 4 is 85 °, and the water droplet contact angle of sample 3, much smaller than the water droplet contact angle of sample 4, presents good hydrophilic (stain resistant) property.
Embodiment
3
The coating protection of nanoparticle modified polyurethane resin base aircraft coating
B737-300
Airframe wallboard sample
B737-300 airframe wallboard is made up of 2014 duralumin, hard alumin ium alloy materials, and before carrying out application, surface impurity removed by the scrub water aluminium alloy wallboard using clean rag or sponge to dip in cleaning, and dries surface with the rag being dried.The SCOTCH-BRITE PAD polishing cloth using 3M dips in deionized water and cleans panel surfaces by Boeing BAC5748 specification, continuously cleaning 4 times, and every time cleaning thing all uses new polishing cloth.Then use clean rag or sponge to dip in the scrub water surface of cleaning at least twice, finally dry surface with the rag being dried.After surface cleaning, should light free from admixture.Before carrying out subsequent operation, surface at least needs to be dried 15 minutes.0.40 Ke Aluoding 1000 powder is dissolved in 1.00 gallons of distilled water formation solution, use nylon brush that A Luoding solution is coated uniformly on the most cleaned panel surfaces, keep surface wettability 3 ~ 5 minutes, and wipe unnecessary solution with clean rag or cellulose sponge.Prepare the nanometer particle-modified aircraft coating that Nano particles of silicon dioxide content is coating material gross mass 4.00%, modified coating, supporting firming agent, supporting diluent are mixed according to the volume ratio of 2:1:0.8, under 1500 ~ 2000 revs/min of rotating speeds, makes various raw material mix homogeneously by dispersion machine.Coating to be mixed uses 100 microns of type spreaders to be coated uniformly on the aluminium alloy wallboard sample surfaces having smeared A Luoding solution through 10 hours natural dryings after standing 1 ~ 15 minute, after natural drying 48 hours, now the thickness of dry coating is about 90 microns.
According in GB24409-2009 coating limits of harmful substances test standard detection coating in VOC (VOC) content, according to European UnionRoHSRegulation detection film in lead, hydrargyrum, cadmium, Cr VI, PBBs and the content of 6 harmful substances of PBDE.According to the pencil hardness of GB/T 6739-86 hardness of film pencil algoscopy test film, according to the pliability of GB/T1731-79 film pliability assay method test film.Testing result shows, coatingVOCContent is not more than 120 grams per liters,RoHSDetection project conformance with standard.The pencil hardness of film is 5H, and the pliability of film is 1 millimeter, meets ASTM D 2197 standard.
Above-described embodiment is simply to illustrate that the citing done of the invention, rather than the restriction to the invention detailed description of the invention.Technical staff for relevant industries involved in the present invention also can make change or the variation of other multi-form on the basis of the above description.Embodiment involved in the present invention is without also enumerating all of embodiment.All any obvious changes amplified out within the spirit and principles in the present invention or variation still in the invention scope of the claims among.
Claims (5)
1. the nanoparticle modified polyurethane resin base aircraft coating for aircraft application, it is characterised in that form by polyurethane resin base matrix with through the modified Nano particle of KH550/KH560/KH570 silane surface treatment.
Nanoparticle modified polyurethane base aircraft coating for aircraft application the most according to claim 1, it is characterized in that, nanoparticle used is the rutile-type that purity is 50.00% ~ 99.99% through the process of silane cladding or anatase type nano titanium dioxide (i.e. TiO2Nano powder), and silica nanometer powder (the i.e. SiO that purity is 50.00% ~ 99.99% through silane surface treatment2Nano powder).
Nanoparticle modified polyurethane base aircraft coating for aircraft application the most according to claim 1, it is characterised in that the content through whole nanoparticles of silane surface treatment is the 0.10% ~ 60.00% of coating material gross mass.
Nanoparticle modified polyurethane base aircraft coating for aircraft application the most according to claim 3, it is characterized in that, the nanometer particle-modified coating of preparation disclosure satisfy that the aircraft ultraviolet-resistant aging performance requirements to coating such as aircraft, unmanned plane, sounding rocket.
Nanoparticle modified polyurethane base aircraft coating for aircraft application the most according to claim 3, it is characterised in that avoid using high volatile aids, it is ensured that modified coating disclosure satisfy that during preparationRoHSAnd the requirement of the aspect such as airworthiness.
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| CN201510859192.6A CN106221533A (en) | 2015-12-01 | 2015-12-01 | A kind of nanoparticle modified polyurethane resin base aircraft coating |
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| CN201510859192.6A CN106221533A (en) | 2015-12-01 | 2015-12-01 | A kind of nanoparticle modified polyurethane resin base aircraft coating |
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Citations (6)
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| CN1513930A (en) * | 2003-04-18 | 2004-07-21 | 中国科学院金属研究所 | Nano-composite polyurethane aircraft paint and its preparation method and application |
| CN102618156A (en) * | 2012-03-20 | 2012-08-01 | 中国科学院金属研究所 | Chromium-free nano composite polyurethane aircraft coating and preparation method thereof |
| CN103342953A (en) * | 2013-06-19 | 2013-10-09 | 北京大学 | Aircraft coating and preparation method thereof, and method for forming aircraft coating |
| CN104387824A (en) * | 2014-11-07 | 2015-03-04 | 天津灯塔涂料工业发展有限公司 | Primer matched paint and preparation method thereof |
| CN104530912A (en) * | 2015-01-06 | 2015-04-22 | 李梦 | Nano titanium modified epoxy resin aircraft coating for electromagnetic shielding |
| CN104893390A (en) * | 2015-05-25 | 2015-09-09 | 李梦 | Antibacterial coating for inner wall of aviation fuel storage and transportation equipment |
-
2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1513930A (en) * | 2003-04-18 | 2004-07-21 | 中国科学院金属研究所 | Nano-composite polyurethane aircraft paint and its preparation method and application |
| CN102618156A (en) * | 2012-03-20 | 2012-08-01 | 中国科学院金属研究所 | Chromium-free nano composite polyurethane aircraft coating and preparation method thereof |
| CN103342953A (en) * | 2013-06-19 | 2013-10-09 | 北京大学 | Aircraft coating and preparation method thereof, and method for forming aircraft coating |
| CN104387824A (en) * | 2014-11-07 | 2015-03-04 | 天津灯塔涂料工业发展有限公司 | Primer matched paint and preparation method thereof |
| CN104530912A (en) * | 2015-01-06 | 2015-04-22 | 李梦 | Nano titanium modified epoxy resin aircraft coating for electromagnetic shielding |
| CN104893390A (en) * | 2015-05-25 | 2015-09-09 | 李梦 | Antibacterial coating for inner wall of aviation fuel storage and transportation equipment |
Non-Patent Citations (4)
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| 康进兴等: "《航空材料学》", 31 March 2013 * |
| 王杏等: "《纳米二氧化钛的生产与应用》", 31 July 2014 * |
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Application publication date: 20161214 |
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