CN102108237B - Preparation method and product of infrared stealth wave-absorbing composite protective paint - Google Patents
Preparation method and product of infrared stealth wave-absorbing composite protective paint Download PDFInfo
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- CN102108237B CN102108237B CN201010623552.XA CN201010623552A CN102108237B CN 102108237 B CN102108237 B CN 102108237B CN 201010623552 A CN201010623552 A CN 201010623552A CN 102108237 B CN102108237 B CN 102108237B
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Abstract
The invention discloses a preparation method of infrared stealth wave-absorbing composite protective paint, which is characterized by comprising the following steps: pretreatment of raw materials: weighing the following raw materials: 20-35% of zinc powder, 20-30% of nickel powder, 5-8% of graphite powder, 5-8% of indium tin oxide, 15-20% of epoxy resin, 5-10% of metallocene polyolefin elastomer, 0.2-0.4% of polyether defoaming agent, 10-15% of amine curing agent and the balance of viscosity regulating agent; grinding of powder: performing solid-liquid mixing and grinding: adding the epoxy resin, the metallocene polyolefin elastomer, the polyether defoaming agent and the amine curing agent into a ball mill and grinding continuously till the particle size of powder achieves 1-2 microns; and regulation of viscosity: filtering, filling, sealing, storing and preparing the paint. The invention further discloses the infrared stealth wave-absorbing composite protective paint prepared by adopting the method. The infrared stealth wave-absorbing composite protective paint can be widely used for comprehensive protection to metal surfaces.
Description
Technical field
The present invention relates to polymer composite coating, be particularly a kind ofly applied in the employing nickel of various material, the preparation method of the infrared stealth wave-absorbing composite protective paint of zinc and goods.
Background technology
Along with the development of society, particularly the developing rapidly of various wireless communication technology, makes electromagnetic radiation omnipresent, particularly in the big and medium-sized cities of crowd's Residential concentration, under being in high frequency electromagnetic radiation environment for a long time, can produce many disadvantageous effects to HUMAN HEALTH; How for associated electronics, naval vessel, vehicle, building etc. provide effective electromagnetic protection, just become one of technical problem that research is more at present.
At present, for the metal shell on various equipment, vehicle, naval vessel, the metallic conduit of various building, anticorrosion, the particularly integrated protection of various steel structure material in steel building, often still adopt traditional paint, this paint can waterproof, anti-oxidant, but but cannot usable reflection infrared rays, cause the temperature control of material comparatively large, expand with heat and contract with cold obviously; And coat of painting can not absorb various radiation, these radiation also cause infringement to a certain degree to material; Meanwhile, due in traditional paint containing halogenic ingredient, paint high temperature or aging time can discharge weak hydrochloric acid, material is damaged, affects the work-ing life of material.
Along with the development of various power-saving technology, the demand for energy-conserving product on market is also more and more vigorous.For the various vehicles, naval vessel, buildings etc. that are under natural lighting condition and under electromagnetic radiation environment, how effective attenuation outside atmosphere is on the impact of internal medium, comprise and reduce the outside impact on the aspect such as temperature, electromagnetic radiation of inside, thus realize energy-conservation object, be also one of technical study direction be badly in need of at present.
And for some products such as equipment, electrical equipment, electromobile self also producing electromagnetic radiation, then need internally, externally all realize electromagnetic shielding and infrared shielding, like this, technical requirements for coating is then higher, in prior art, also do not find to meet simultaneously high luminous reflectance factor, high electromagnetic wave absorptivity simultaneously again can withstand high temperatures low temperature, anticorrosive and anti-aging, duration of service long, the metal composite protective coating of stable performance.
Summary of the invention
Object of the present invention, exactly for overcoming the above-mentioned deficiency of prior art, and provides a kind of have absorption of electromagnetic radiation, infrared stealth performance, antiseptic property and tolerance high/low temperature the industrialized process for preparing of aging-resistant integrated protection coating;
The present invention also aims to, the infrared stealth wave-absorbing composite protective paint adopting aforesaid method to produce is provided.This coating can be applied and metal material protection, also can be applied to the protection of the non-metallic material such as plastics.
For achieving the above object, technical scheme provided by the invention is:
A preparation method for infrared stealth wave-absorbing composite protective paint, is characterized in that, comprises the following steps:
(1) raw materials pretreatment:
Prepare spherical ferrite magnetic patch and zirconium white, as the spheroid used in ball mill;
The In-Sn oxide powder that prepared sizes reach between 0.1 ~ 2 micron is for subsequent use,
Preparation mean diameter is zinc powder, nickel powder, the Graphite Powder 99 of 1 ~ 2 millimeter;
(2) raw materials weighing:
Raw material is taken according to following weight percent:
Zinc powder 20 ~ 35%
Nickel powder 20 ~ 30%
Graphite Powder 99 5 ~ 8%
Indium tin oxide 5 ~ 8%
Epoxy resin 15 ~ 20%
Metallocene polyolefin elastomers POE 5 ~ 10%
Polyether antifoam agent 0.2 ~ 0.4%
Amine hardener 10 ~ 15%
Surplus is viscosity modifier;
(3) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 2 ~ 5 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 10 ~ 20 microns;
(4) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1 ~ 2 micron;
(5) adjusting viscosity: add viscosity modifier adjustment dope viscosity, viscosity is adjusted to 60 ~ 80s (being coated with-4 glasss, 25 DEG C), described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(6) filter, filling and sealed storage, obtained coating;
(7) coating is placed in magnetic field to magnetize, leaves standstill in stationary magnetic field and continue 1 ~ 3 hour.
Described step (3) ~ (6) are for carrying out under nitrogen atmosphere protection of the environment.
Spherical ferrite magnetic patch in described step (1), its diameter is 60 ~ 95mm; The diameter of described zirconium white spheroid is 5 ~ 30mm; The weight ratio of its loading level is ferrite: zirconium white=3: 1.
Described step (4), also comprises and ball mill and compound is evenly warmed up to 35 ~ 50 DEG C, pressurization 2 ~ 5MPa, and pressurize is to grinding end, leaves standstill and is cooled to room temperature.
The infrared stealth wave-absorbing composite protective paint adopting aforesaid method to prepare, is characterized in that, comprises following feed composition weight part:
Zinc powder 20 ~ 35%
Nickel powder 20 ~ 30%
Graphite Powder 99 5 ~ 8%
Indium tin oxide 5 ~ 8%
Epoxy resin 15 ~ 20%
Metallocene polyolefin elastomers POE 5 ~ 10%
Polyether antifoam agent 0.2 ~ 0.4%
Amine hardener 10 ~ 15%
Surplus is viscosity modifier, and the ferrite produced in process of lapping and zirconium white.
Described metallocene polyolefin elastomers is ethylene-octene copolymer.
Described amine hardener, for triethylene tetramine or tetraethylene pentamine or by the polymeric amide of polyethylene polyamine and the polycondensation of dimerization behenic acid or their mixture.
Described viscosity modifier, be the mixture of propyl carbinol and dimethylbenzene, the mass ratio both it is: propyl carbinol: dimethylbenzene=1: 1.3.
Preparation method provided by the invention, be suitable for industrialization and produce, in process of production, operating mode easily controls, constant product quality; Owing to have employed raw materials pretreatment and precise finiss process two, reduce the needs of preparation process for equipment and place, and preparation speed is fast, efficiency is high; Also directly can purchase through pretreated raw material, be directly used in production.
Composite protective coating provided by the invention, due to the rare earth material indium tin oxide that it adopts, magneticsubstance nickel powder, ferrite, conduction lubricant graphite, and water tolerance, the good epoxy resin of chemical resistant properties, the visible ray that made it possess and infrared reflectance high, absorption of electromagnetic radiation rate is high, tolerance high/low temperature, acid-alkali-corrosive-resisting, anti-aging, shelf-stable, sticking power is good, various equipment can be widely used in, electrical equipment, vehicle, naval vessel, the protecting metallic surface of building, also may be used for electromobile, the plastics such as military architecture, the external coating of concrete material, realize infrared stealth, bi-directional electromagnetic shielding and synthesis energy saving.
Coating provided by the invention uses in the industry, effectively can avoid the secondary brushing technique of brush infrared stealth paint or electromagnetic shielding paint after traditional first brush antifouling paste, time saving and energy saving, provides operating efficiency.
Coating provided by the invention adopts infrared stealth, anticorrosion, wave-absorbing magnetic material simultaneously, have employed mineral filler and high molecular polymer binder, to improve the integrated protection performance of coating, its ir-absorbance compares that common paint reduces more than 5 times, has two-way frequency electromagnetic shielding capability, effective anticorrosion time limit is more than 3 years, tolerate-35 ~ 120 DEG C, can apply with under various severe natural environmental condition.Adopt the performance such as time of drying, hardness, sticking power, snappiness, anti-impact force, wear resistance, infrared emittance, frequency electromagnetic waves specific absorption of national testing standard to coating to test, the over-all properties of coating is better.
Below in conjunction with drawings and Examples, the present invention is further described.
Accompanying drawing explanation
Fig. 1 is that coating of the present invention carries out frequency electromagnetic waves absorptive character test result.
Embodiment
Embodiment 1: the preparation method of a kind of infrared stealth wave-absorbing composite protective paint provided by the invention, comprises the following steps:
(1) raw materials pretreatment:
Prepare spherical ferrite magnetic patch and zirconium white, as the spheroid used in ball mill;
The In-Sn oxide powder that prepared sizes reach between 0.1 ~ 2 micron is for subsequent use,
Preparation mean diameter is zinc powder, nickel powder, the Graphite Powder 99 of 1 ~ 2 millimeter;
Also can purchase the raw material of eligible requirement, be directly used in production;
Spherical ferrite magnetic patch is wherein ferrite sintered body, and its diameter is 60 ~ 95mm; The diameter of described zirconium white spheroid is 5 ~ 30mm; The weight ratio of its loading level is ferrite: zirconium white=3: 1.
(2) raw materials weighing:
Raw material is taken according to following weight percent:
Zinc powder 20 ~ 35%
Nickel powder 20 ~ 30%
Graphite Powder 99 5 ~ 8%
Indium tin oxide 5 ~ 8%
Epoxy resin 15 ~ 20%
Metallocene polyolefin elastomers POE 5 ~ 10%
Polyether antifoam agent 0.2 ~ 0.4%
Amine hardener 10 ~ 15%
Surplus is viscosity modifier;
(3) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 2 ~ 5 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 10 ~ 20 microns;
(4) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1 ~ 2 micron;
(5) adjusting viscosity: add viscosity modifier adjustment dope viscosity, viscosity is adjusted to 60 ~ 80s (25 DEG C), described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(6) filter, filling and sealed storage, obtained coating;
(7) coating is placed in magnetic field to magnetize, leaves standstill in stationary magnetic field and continue 1 ~ 3 hour.
Further, in order to avoid material is oxidized with the contact of oxygen in air in preparation process, described step (3) ~ (6) are for carrying out under nitrogen atmosphere protection of the environment.
Adopting the collocation of this abrading-ball, is consider that ferrite and zirconium white are magneticsubstance, and its powder that self produces in process of lapping, can as a part for coating of the present invention, and without the need to screening, reject operation again to it; Meanwhile, ferritic density is large and hardness is slightly low, and zirconic hardness is large and density is slightly low, the lapping mode that both employings combine, and can accelerate the grinding rate to powder various in coating; Simultaneously, the weight ratio of its loading level in ball mill is ferrite: zirconium white=3: 1, and the diameter of ferrite abrading-ball is much larger than zirconium white, also be consider that in coating composition, ferritic content can be slightly large, zirconium white needs less than normal, and ferrite density is large, grinding surging force is large, be suitable for the corase grind in large space, zirconium white is then suitable for the fine grinding in little space, by the two is reasonably combined, work together, can greatly improve mill efficiency and grinding precision, obtain nano level paint powder constituents.
Adopt an infrared stealth wave-absorbing composite protective paint prepared by aforesaid method, it comprises following feed composition weight part:
Zinc powder 20 ~ 35%
Nickel powder 20 ~ 30%
Graphite Powder 99 5 ~ 8%
Indium tin oxide 5 ~ 8%
Epoxy resin 15 ~ 20%
Metallocene polyolefin elastomers POE 5 ~ 10%
Polyether antifoam agent 0.2 ~ 0.4%
Amine hardener 10 ~ 15%
Surplus is viscosity modifier, is about 3 ~ 15% of overall product weight;
In finished product, comprise the ferrite and zirconium white that produce in process of lapping, wherein ferrite is about 0.2 ~ 2% of overall product weight, and zirconium white is about 0.1 ~ 0.5%.
Described metallocene polyolefin elastomers POE is ethylene-octene copolymer.
Described amine hardener, for triethylene tetramine or tetraethylene pentamine or by the polymeric amide of polyethylene polyamine and the polycondensation of dimerization behenic acid or their mixture.
Described viscosity modifier, be the mixture of propyl carbinol and dimethylbenzene, the mass ratio both it is: propyl carbinol: dimethylbenzene=1: 1.3.
In the prior art, maximum infrared stealth coatings up to the present reported by metallic paint.Research shows, the reflectivity of opaque body is higher, and its infrared emittance is lower.Therefore we adopt zinc powder, nickel powder and Graphite Powder 99 to do filler, simultaneously, because indium tin oxide has higher specific absorption at microwave and millimere-wave band, in coating, add the absorption being more conducive to visible ray and infrared light, thus make coating have lower infrared and VISIBLE LIGHT EMISSION rate.
In protection against corrosion; do filler can effectively make the antiseptic property of coating improve by adding zinc powder in coating; zinc powder in coating by galvanic protection effect, shielding barrier functionality; effectively prevent the infiltration of water molecules, oxygen and other salt corrosion medium; and after there is electrochemical reaction in zinc itself; iris action can be played to corrosive deposit further in the surface that the zinc oxide generated is attached to iron plate, makes the preservative effect of coating more lasting.
The epoxy resin that the present invention adopts has excellent water tolerance, chemical-resistant (acidproof, alkaline-resisting and organic solvent), shelf-stable, sticking power is good especially, be applicable to the application of steel equipment, naval vessel, structures in the heavy corrosion environment such as sea, seashore, manufacturing district, also very applicable to the application of various basin, pipeline, be the main priming paint tackiness agent of current heavy duty system.
Improving in weathering resistance and snappiness, shock resistance, present invention employs metallocene polyolefin elastomers POE, polyene elastomerics is a kind of ethylene-octene copolymer, it has superior mobility, there is the heat aging property of excellent mechanical property, processing characteristics and excellence, with metal oxide with the use of the characteristic that can get at excellent thermal ageing, compressibility and resistance to sky marquis.
In electromagnetic shielding, present invention employs the composite conductive layers that nickel-graphite-zinc is formed, through magnetized ferrite, self there is certain low-intensity magnetic field in addition, can part counteracting and weaken external frequency electromagnetic waves, make it more form eddy current at composite conductive layers, thus absorbed.
In thermostability, chemical stability and mechanical stability, the ferrite that the present invention adopts insulate and has the stability of height, and under zirconium white normal temperature insulate, thermal conductivity is low, linear expansivity is large, thermal structure intensity is high, chemical stability is good, less than 2000 DEG C inoperative to multiple molten metal, silicate, glass etc., and solution and the zirconium white of caustic alkali, carbonate and various acid (vitriol oil and hydrofluoric acid except) are inoperative, also improve the over-all properties of coating.
The coating prepared is magnetized operation, keeps better uniformity coefficient when can improve its storage, avoid layering, segregation.Also make ferrite wherein with certain weak magnetic simultaneously, metallic surface sticking power and the wave-absorbing effect of coating are provided.
Processing units used in the present invention, can use high speed ball mill, friction mill, vibrations mill, planetary mills, the devices such as supper micron mill, sorting unit can be micropowder sorter etc.
After composite protective paint brush provided by the invention is applied to metal material surface, after the metal material surface of particularly iron and steel material quality, its integrated protection successful.
Coating provided by the invention, has good color and luster and flowing property, and coating prepared by auxiliary packing has lower infrared emittance to adopt doped semiconductor materials indium tin oxide to do, and has good infrared stealth performance.Salt mist experiment shows, obtained coating is being carried out in indoor accelerated corrosion experimentation, and can play protective effect to the surface of brushing base material for a long time, the anti-corrosion capability of coating is stronger.Adopt the mechanical property such as time of drying, hardness, sticking power, snappiness, shock resistance, wear resistance of national testing standard to coating to test, the over-all properties of coating is better; Carry out absorption of electromagnetic radiation test to it, effect is also better.
Embodiment 2: the preparation method that this enforcement provides and coating, substantially identical with embodiment 1, its difference is, its weight percentages of components adopted is different.
The preparation method of a kind of infrared stealth wave-absorbing composite protective paint that this embodiment provides, comprises the following steps:
(1) raw materials pretreatment:
Prepare spherical ferrite magnetic patch and zirconium white, as the spheroid used in ball mill;
The In-Sn oxide powder that prepared sizes reach between 0.1 ~ 2 micron is for subsequent use,
Preparation mean diameter is zinc powder, nickel powder, the Graphite Powder 99 of 1 ~ 2 millimeter;
Also can purchase the raw material of eligible requirement, be directly used in production;
(2) raw materials weighing:
Raw material is taken according to following weight percent:
Zinc powder 20%
Nickel powder 30%
Graphite Powder 99 5%
Indium tin oxide 5%
Epoxy resin 15%
Metallocene polyolefin elastomers POE 5%
Polyether antifoam agent 0.2%
Amine hardener 10%
Surplus is viscosity modifier;
(3) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 2 ~ 5 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 10 ~ 20 microns;
(4) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1 ~ 2 micron;
(5) adjusting viscosity: add viscosity modifier adjustment dope viscosity, viscosity is adjusted to 60s (25 DEG C), described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(6) filter, filling and sealed storage, obtained coating.
Spherical ferrite magnetic patch in described step (1), its diameter is 60mm; The diameter of described zirconium white spheroid is 5mm; The weight ratio of its loading level is ferrite: zirconium white=3: 1.
Adopt an infrared stealth wave-absorbing composite protective paint prepared by aforesaid method, it comprises following feed composition weight part:
Zinc powder 20%
Nickel powder 30%
Graphite Powder 99 5%
Indium tin oxide 5%
Epoxy resin 15%
Metallocene polyolefin elastomers POE 5%
Polyether antifoam agent 0.2%
Amine hardener 10%
Surplus is viscosity modifier.
The ferrite 0.2% produced in process of lapping is also included in, zirconium white 0.1% in coating products finished product.
Described metallocene polyolefin elastomers POE is ethylene-octene copolymer.
Described amine hardener, for triethylene tetramine or tetraethylene pentamine or by the polymeric amide of polyethylene polyamine and the polycondensation of dimerization behenic acid or their mixture.
Described viscosity modifier, be the mixture of propyl carbinol and dimethylbenzene, the mass ratio both it is: propyl carbinol: dimethylbenzene=1: 1.3.
The partial properties of the coating adopting national standard to measure is as shown in the table:
Build: 45 ~ 60 μm
Measuring tempeature: room temperature
Accompanying drawing 1 tests for carrying out inhaling ripple at microwave frequency band the test result obtained, and its shield ranges is 1 ~ 20GHz, and power absorption rate is 8 ~ 60%, electromagnetic attenuation 2 ~-5dB.
Embodiment 3: the preparation method that this enforcement provides and coating, substantially with embodiment 1,2 identical, its difference is, its weight percentages of components adopted is different.Its difference is:
In the preparation method of infrared stealth wave-absorbing composite protective paint,
(1) raw materials pretreatment
Spherical ferrite magnetic patch is wherein ferrite sintered body, and its diameter is 95mm; The diameter of described zirconium white spheroid is 30mm;
(2) raw materials weighing:
Raw material is taken according to following weight percent:
Zinc powder 35%
Nickel powder 20%
Graphite Powder 99 5%
Indium tin oxide 5%
Epoxy resin 15%
Metallocene polyolefin elastomers POE 5%
Polyether antifoam agent 0.4%
Amine hardener 10%
Surplus is viscosity modifier;
(3) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 5 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 20 microns;
(4) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1 micron;
(5) adjusting viscosity: add viscosity modifier adjustment dope viscosity, viscosity is adjusted to 80s (25 DEG C), described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(6) filter, filling and sealed storage, obtained coating;
(7) coating is placed in magnetic field to magnetize, leaves standstill in stationary magnetic field and continue 1 ~ 3 hour.
Further, in order to avoid material is oxidized with the contact of oxygen in air in preparation process, described step (3) ~ (6) are for carrying out under nitrogen atmosphere protection of the environment.
Adopt an infrared stealth wave-absorbing composite protective paint prepared by aforesaid method, it comprises following feed composition weight part:
Zinc powder 35%
Nickel powder 20%
Graphite Powder 99 5%
Indium tin oxide 5%
Epoxy resin 15%
Metallocene polyolefin elastomers POE 5%
Polyether antifoam agent 0.4%
Amine hardener 10%
Surplus is viscosity modifier;
In finished product, comprise the ferrite and zirconium white that produce in process of lapping, wherein ferrite is about 2% of overall product weight, and zirconium white is about 0.5%.
Described amine hardener is tetraethylene pentamine.
Embodiment 4: the preparation method that this enforcement provides and coating, substantially identical with embodiment 1, its difference is, its weight percentages of components adopted is different.Its difference is:
In the preparation method of infrared stealth wave-absorbing composite protective paint,
(1) raw materials pretreatment
Spherical ferrite magnetic patch is wherein ferrite sintered body, and its diameter is 80mm; The diameter of described zirconium white spheroid is 20mm;
(2) raw materials weighing:
Raw material is taken according to following weight percent:
Zinc powder 30%
Nickel powder 21%
Graphite Powder 99 6%
Indium tin oxide 6%
Epoxy resin 16%
Metallocene polyolefin elastomers POE 6%
Polyether antifoam agent 0.3%
Amine hardener 11%
Surplus is viscosity modifier;
(3) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 4 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 15 microns;
(4) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1.5 microns;
(5) adjusting viscosity: add viscosity modifier adjustment dope viscosity, viscosity is adjusted to 70s (25 DEG C), described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(6) filter, filling and sealed storage, obtained coating;
(7) coating is placed in magnetic field to magnetize, leaves standstill in stationary magnetic field and continue 3 hours.
Adopt an infrared stealth wave-absorbing composite protective paint prepared by aforesaid method, it comprises following feed composition weight part:
Zinc powder 30%
Nickel powder 21%
Graphite Powder 99 6%
Indium tin oxide 6%
Epoxy resin 16%
Metallocene polyolefin elastomers POE 6%
Polyether antifoam agent 0.3%
Amine hardener 11%
In finished product, comprise the ferrite and zirconium white that produce in process of lapping, wherein ferrite is about 1% of overall product weight, and zirconium white is about 0.3%.
Described amine hardener, for by the polymeric amide of polyethylene polyamine and the polycondensation of dimerization behenic acid or their mixture.
Embodiment 5: the preparation method that this enforcement provides and coating, substantially with embodiment 1,2,3,4 identical, its difference is, its weight percentages of components adopted is different.Its difference is:
(1) raw materials pretreatment:
Spherical ferrite magnetic patch wherein, its diameter is 65mm; The diameter of described zirconium white spheroid is 20mm;
(2) raw materials weighing:
Raw material is taken according to following weight percent:
Zinc powder 25%
Nickel powder 22%
Graphite Powder 99 7%
Indium tin oxide 7%
Epoxy resin 17%
Metallocene polyolefin elastomers POE 6%
Polyether antifoam agent 0.35%
Amine hardener 12%
Surplus is viscosity modifier;
(3) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 3 ~ 4 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 10 ~ 15 microns;
(4) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1 ~ 1.5 micron;
(5) adjusting viscosity: add viscosity modifier adjustment dope viscosity, viscosity is adjusted to 70 ~ 75s (25 DEG C), described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(6) filter, filling and sealed storage, obtained coating;
(7) coating is placed in magnetic field to magnetize, leaves standstill in stationary magnetic field and continue 1.5 hours.
Adopt an infrared stealth wave-absorbing composite protective paint prepared by aforesaid method, it comprises following feed composition weight part:
Zinc powder 25%
Nickel powder 22%
Graphite Powder 99 7%
Indium tin oxide 7%
Epoxy resin 17%
Metallocene polyolefin elastomers POE 6%
Polyether antifoam agent 0.35%
Amine hardener 12%
Surplus is viscosity modifier;
In finished product, also comprise the ferrite produced in process of lapping and zirconium white, wherein ferrite is about 0.7% of overall product weight, and zirconium white is about 0.2%.
Described amine hardener is the mixture of the polymeric amide of triethylene tetramine, tetraethylene pentamine and polyethylene polyamine and the polycondensation of dimerization behenic acid.
Embodiment 6: the preparation method that this enforcement provides and coating, substantially with embodiment 1,2,3,4,5 identical, its difference is, its weight percentages of components adopted is different.Its difference is:
(7) raw materials pretreatment:
Spherical ferrite magnetic patch wherein, its diameter is 80mm; The diameter of described zirconium white spheroid is 25mm;
(8) raw materials weighing:
Raw material is taken according to following weight percent:
Zinc powder 21%
Nickel powder 21%
Graphite Powder 99 5%
Indium tin oxide 5%
Epoxy resin 20%
Metallocene polyolefin elastomers POE 10%
Polyether antifoam agent 0.25%
Amine hardener 15%
Surplus is viscosity modifier;
(9) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 4 ~ 5 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 10 microns;
(10) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1 ~ 1.2 micron;
(11) adjusting viscosity: add viscosity modifier adjustment dope viscosity, viscosity is adjusted to 70s (25 DEG C), described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(12) filter, filling and sealed storage, obtained coating;
(7) coating is placed in magnetic field to magnetize, leaves standstill in stationary magnetic field and continue 2 hours.
Adopt an infrared stealth wave-absorbing composite protective paint prepared by aforesaid method, it comprises following feed composition weight part:
Zinc powder 21%
Nickel powder 21%
Graphite Powder 99 5%
Indium tin oxide 5%
Epoxy resin 20%
Metallocene polyolefin elastomers POE 10%
Polyether antifoam agent 0.25%
Amine hardener 15%
Surplus is viscosity modifier;
In finished product, also comprise the ferrite produced in process of lapping and zirconium white, wherein ferrite is about 0.8% of overall product weight, and zirconium white is about 0.3%.
Described amine hardener is the mixture of the polymeric amide of triethylene tetramine, tetraethylene pentamine and polyethylene polyamine and the polycondensation of dimerization behenic acid.
The present invention is not limited to above-mentioned embodiment, and every all similar or equivalent embodiment that can realize the object of the invention, all within protection scope of the present invention.
Claims (9)
1. a preparation method for infrared stealth wave-absorbing composite protective paint, is characterized in that, comprises the following steps:
(1) raw materials pretreatment:
Prepare spherical ferrite magnetic patch and zirconium white, as the spheroid used in ball mill;
The In-Sn oxide powder that prepared sizes reach between 0.1 ~ 2 micron is for subsequent use,
Preparation mean diameter is zinc powder, nickel powder, the Graphite Powder 99 of 1 ~ 2 millimeter;
(2) raw materials weighing:
Raw material is taken according to following weight percent:
(3) powder grinding: zinc powder, nickel powder, Graphite Powder 99 and In-Sn oxide powder are added ball mill grinding 2 ~ 5 hours, carries out mixed grinding and makes it be formed to inlay mixed type particulate, until each powder granularity reaches 10 ~ 20 microns;
(4) solid-liquid mixed grinding: add in ball mill by epoxy resin, metallocene polyolefin elastomers and polyether antifoam agent, amine hardener, continues grinding, until each powder granularity reaches 1 ~ 2 micron;
(5) adjusting viscosity: add viscosity modifier adjustment dope viscosity, 60 ~ 80s at viscosity being adjusted to 25 DEG C, described viscosity modifier is the mixture of propyl carbinol and dimethylbenzene;
(6) filter, filling and sealed storage, obtained coating.
2. the preparation method of infrared stealth wave-absorbing composite protective paint according to claim 1, is characterized in that, it also comprises the steps:
(7) coating is placed in magnetic field to magnetize, leaves standstill in stationary magnetic field and continue 1 ~ 3 hour.
3. the preparation method of infrared stealth wave-absorbing composite protective paint according to claim 1, is characterized in that, described step (3) ~ (6) are for carrying out under nitrogen atmosphere protection of the environment.
4. the preparation method of infrared stealth wave-absorbing composite protective paint according to claim 1, is characterized in that, the spherical ferrite magnetic patch in described step (1), and its diameter is 60 ~ 95mm; The diameter of described zirconium white spheroid is 5 ~ 30mm; The weight ratio of its loading level is ferrite: zirconium white=3: 1.
5. the preparation method of infrared stealth wave-absorbing composite protective paint according to claim 1, is characterized in that, described step (4), also comprise and ball mill and compound are evenly warmed up to 35 ~ 50 DEG C, pressurization 2 ~ 5MPa, and pressurize is to grinding end, leaves standstill and is cooled to room temperature.
6. the infrared stealth wave-absorbing composite protective paint adopting the described method of one of Claims 1 to 5 to prepare, is characterized in that, comprise following feed composition weight part:
Surplus is viscosity modifier, is included in the ferrite and zirconium white that produce in process of lapping in finished product.
7. infrared stealth wave-absorbing composite protective paint according to claim 6, is characterized in that, described metallocene polyolefin elastomers is ethylene-octene copolymer.
8. infrared stealth wave-absorbing composite protective paint according to claim 6, is characterized in that, described amine hardener, for triethylene tetramine or tetraethylene pentamine or by the polymeric amide of polyethylene polyamine and the polycondensation of dimerization behenic acid or their mixture.
9. infrared stealth wave-absorbing composite protective paint according to claim 6, is characterized in that, described viscosity modifier, and be the mixture of propyl carbinol and dimethylbenzene, the mass ratio both it is: propyl carbinol: dimethylbenzene=1: 1.3.
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| CN102268213A (en) * | 2011-08-29 | 2011-12-07 | 朱恩灿 | Electromagnetic wave shielding coating and preparation method thereof |
| CN102304339B (en) * | 2011-09-26 | 2013-08-14 | 上海应用技术学院 | High-temperature adhesive and application thereof |
| CN102504495B (en) * | 2011-11-04 | 2013-04-10 | 北京理工大学 | Epoxy resin composite wave-absorbing material and preparation method thereof |
| CA2871957C (en) * | 2013-11-25 | 2019-05-07 | Crayola Llc | Marking system |
| CN106700880A (en) * | 2016-12-30 | 2017-05-24 | 南京悠谷知识产权服务有限公司 | Paint for aircraft stealth and preparation method thereof |
| CN106752732A (en) * | 2017-03-30 | 2017-05-31 | 孟鋆辉 | A kind of macromolecule superconduction stealth anticorrosive paint |
| CN106947392A (en) * | 2017-04-17 | 2017-07-14 | 龚有林 | A kind of paint of absorbable radar frequency electromagnetic waves |
| CN115991953A (en) * | 2023-02-13 | 2023-04-21 | 浙江绿环新材料科技有限公司 | Preparation process of modified epoxy resin powder coating with electromagnetic shielding function |
| CN116769378A (en) * | 2023-07-01 | 2023-09-19 | 广州励宝新材料科技有限公司 | Quick-curing aqueous two-component epoxy anti-corrosion paint and preparation method thereof |
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