CN104449356A - Preparation method of radiation-proof ceramic paint for subway stations - Google Patents
Preparation method of radiation-proof ceramic paint for subway stations Download PDFInfo
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- CN104449356A CN104449356A CN201410682016.5A CN201410682016A CN104449356A CN 104449356 A CN104449356 A CN 104449356A CN 201410682016 A CN201410682016 A CN 201410682016A CN 104449356 A CN104449356 A CN 104449356A
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Abstract
The invention relates to a preparation method of a radiation-proof ceramic paint for subway stations. The preparation method comprises the following steps: (1) preparing a functional polysiloxane prepolymer; (2) preparing radiation-proof functional powder bodies; (3) preparing the radiation-proof ceramic paint, under a stirring condition, adding the functional polysiloxane prepolymer, a solvent, the modified conductive functional powder bodies and an addition agent in proportion by weight for mixing, and eliminating bubbles by a supersonic antifoaming method so as to obtain the desired radiation-proof ceramic paint for the subway stations. According to the invention, a low-temperature oxygen introducing method is adopted, so that unstable stannous salt produces stable grey tin dioxide with an electric conduction effect and a semiconductor doping effect under the effect of oxidation, and an adsorbing, reducing and oxidizing method is adopted, so that not only the electric conductivity of the single carbon black can be improved, but also the radiation resistance of the powder bodies can be improved.
Description
[technical field]
The present invention relates to ceramic coating technical field, specifically, is a kind of manufacture method of the anti-radiation ceramics coating for subway station.
[background technology]
Subway is the abbreviation of sub. traffic, belongs to track traffic industry.Subway adopts to hole in underground, use the mode of transportation of rail electric locomotive traction, remove for convenience of passenger, build outside a turnover exit on ground every a segment distance, general soil and the space not taking city, neither ground composing environment is polluted, can be again passenger and hide the noisy of city good environment is provided.Subway is one independently rail transit system, and it normally runs crowded by surface road impact, can quick, safety, cosily transport passenger.Track traffic is main flow and the direction of Modern City Traffic, its freight volume is large, speed is fast, disturb little, energy consumption is low, is described as the Aorta of modern city, is the distinctive marks that a city incorporates international big city modern transportation, the strength that it is not only a national national power and scientific and technological level represents, and is the most efficient manner solving city traffic pressure.Compared with other modes of transportation, the principal feature of subway transportation is as follows: one is subway transportation is large size city Infrastructure, for social production and life provide infrastructure service, has significant public welfare; Two is the circuit of subway transportation Infrastructure, station, communication and vehicle etc., has asset specificity, can not he use once completing; Three is that subway transportation construction cost is high, and scale is large, and return period is long, but the expansion of subway network system scale, can reduce costs; Four is each stages such as subway transportation item goal programming, design, construction and operation, need multi-specialized, cooperatively interact between conglomerate, multiple enterprises.
In recent years, urban rail transit in China obtains tremendous development, the indexs such as line length, number of locomotives, passenger traffic quantity increase substantially, China has become Construction of Urban Rail Traffic market the biggest in the world, Stable Development in Economy and the active support of the government, make China's urban rail transit construction scale progressively expand.The coming five years China track traffic industry will welcome builds peak, and within 2011, China enters " 12 " project period, and mileage is always built in period National urban track traffic will more than 3,000 kilometer, and gross investment will more than 15,00,000,000,000 yuan.
Chinese Patent Application No. 201410371373.X relates to a kind of Ultraviolet light cured ceramic paint, the weight percentage of the component comprised and each component is: six functional groups monomer 10-15%, two functional polyurethane acrylate 20-25%, hexafunctional aliphatic urethane acrylates 10-15%, flow agent 0.1-0.5%, light trigger 0.5-2%, feel auxiliary agent 2-4%, flatting silica 5-8%, solvent 35-45%; Each component is mixed according to a definite sequence, obtain finished product coating, coating of the present invention have chosen the good urethane acrylate of wettability, the hydrophobic silica class flatting silica of super cool cunning of arranging in pairs or groups, make film reach smooth, the scratch resistant in surface and the good requirement of exquisiteness, be specially adapted to the 3C electronic product higher to appearance requirement.
Chinese Patent Application No. 201310530335.X relates to a kind of high-emissivity ceramic paint, comprise base-material, additive, tackiness agent, softening agent and solvent, base-material and additive be selected from gahnite powder, aluminium picotite powder, boron nitride, norbide, ferric oxide, five kinds of yttrium oxide or all; Tackiness agent is made up of liquid phosphoric acid aluminum dihydrogen, liquid phosphoric acid dihydro magnesium.The weight percent of described base-material and additive is 5%-78%, and the weight percent of tackiness agent is 5%-30%, and the weight percent of softening agent is 0.5%-3%, and surplus is solvent.It is large that this coating has operating temperature range, and can use at the temperature more than 1400 DEG C, maximum operation (service) temperature can reach nearly 2000 DEG C; And be applicable to various matrix, the advantages such as to the strong adhesion of matrix, be applicable to soda acid multiple ambient, long-term durability is good, and heat shock resistance ability to bear is strong, improves thermo-efficiency, reduces substrate temperature, wear-resisting and good corrosion resistance, little to environmental influence, easy to use.
Chinese Patent Application No. 201310524316.6 the invention discloses a kind of high-emissivity ceramic paint, comprise base-material, additive, tackiness agent, softening agent and solvent, base-material and additive be selected from gahnite powder, manganese-aluminium spinelle powder, boron nitride, norbide, ferric oxide, five kinds of yttrium oxide or all; Tackiness agent is made up of liquid phosphoric acid aluminum dihydrogen, liquid phosphoric acid dihydro magnesium.The weight percent of described base-material and additive is 5%-78%, and the weight percent of tackiness agent is 5%-30%, and the weight percent of softening agent is 0.5%-3%, and surplus is solvent.It is large that this coating has operating temperature range, and can use at the temperature more than 1400 DEG C, maximum operation (service) temperature can reach nearly 2000 DEG C; And be applicable to various matrix, the advantages such as to the strong adhesion of matrix, be applicable to soda acid multiple ambient, long-term durability is good, and heat shock resistance ability to bear is strong, improves thermo-efficiency, reduces substrate temperature, wear-resisting and good corrosion resistance, little to environmental influence, easy to use.
[summary of the invention]
The object of the invention is to overcome the deficiencies in the prior art, a kind of anti-radiation ceramics coating for subway station and production method thereof are provided.
The object of the invention is to be achieved through the following technical solutions:
For a manufacture method for the anti-radiation ceramics coating of subway station, its viscosity is 3000 ~ 8000mPs (20 DEG C, 6r/min), and thixotroping value is 1.5 ~ 2.5.
For an anti-radiation ceramics coating for subway station, its feed composition parts by weight are:
Described solvent is Virahol, propyl carbinol, ethylene glycol monomethyl ether or their mixture.
Described auxiliary agent is Amino End Group modified silicon oil, and the weight-average molecular weight of described Amino End Group modified silicon oil is 3000 ~ 50000; Adopt Amino End Group modified silicon oil at reduction diagram of system surface tension, while being beneficial to the spraying film forming of coating, auxiliary agent middle-end amino group has sequestering action to metallic tin, simultaneously by the backbone of auxiliary agent, radioprotective powder is wound around, sedimentation after avoiding function powder to be prepared into coating again, improves the storge quality of coating.
Described silicon dioxide aerosol is granularity is 20 ~ 50nm, and silica content is 40 ~ 60%.Silicon dioxide aerosol has excellent thixotropic property, makes coating have higher viscosity static making, prevents coating from precipitating, and in coating procedure, have lower viscosity, be beneficial to spraying, and make coating carry out adhesive solidification, realize even coating procedure.
For a manufacture method for the anti-radiation ceramics coating of subway station, comprise following steps:
(1): the preparation of functional polyorganosiloxane prepolymer: four acicular type zinc oxide crystal whisker adopts the mixed solvent of deionized water and alcohol to carry out ultrasonic disperse, after scattered, then in dispersion liquid, acetic acid and ammoniacal liquor composite catalyst is added, the pH of regulation system is 2.0 ~ 4.0, add siloxanyl monomers again, and the molar ratio of siloxanyl monomers and deionized water is 1: 5 ~ 15, mix under routine, and then ultrasonic under 35 ~ 50 DEG C of temperature condition, obtain required functional polyorganosiloxane prepolymer.
In described functional siloxane prepolymer preparation, siloxanes is the mixture of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane, and the molar ratio of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane is 1: 0.05 ~ 0.40, and methyl trialkoxysilane is a kind of in methyltrimethoxy silane, Union carbide A-162 or mixture.
The centrosome diameter of described four acicular type zinc oxide crystal whisker 0.7 ~ 1.0 μm, needles base diameter 0.5 ~ 1.5 μm, needles length is 3 ~ 5 μm, and the ultrasonic disperse time is 30 ~ 45min, and the mass concentration of four acicular type zinc oxide crystal whisker is 0.1 ~ 2.5g/L.
In described mixed solvent, the molar ratio of deionized water and alcohol is 1: 1 ~ 5, and alcohol used is a kind of in Virahol, ethanol.
(2): the preparation of radiation proof function powder: in tin-salt solution, add carbon black powder, and then adopt the method for ultrasonic disperse limit, limit adsorbing metal ions; Tin ion is fully adsorbed at carbon blacksurface further, centrifugation is adopted after absorption, then sealing is reduced and dries powder, again under low temperature leads to oxygen condition, heat, make tin ion reduce at carbon blacksurface and produce the stannic oxide with grey, the anti-radiation of powder is provided, prepares the preparation of radiation proof function powder;
Tin-salt solution is the water of tin chloride solution, and wherein, the solubility of tin ion is 0.1 ~ 1.5mol/L, and the addition of carbon black powder is 10 ~ 30g/L, and the pH of described solution is 3.5 ~ 5.0, regulates with nitric acid, hydrochloric acid.
Adsorption temp during described ultrasonic disperse is 25 ~ 65 DEG C, and the time is 45 ~ 90min.
Centrifugal rotational speed during described centrifugal separation processes is 4500 ~ 6000r/min.
The dry condition of described sealing reduction is bake out temperature is 80 ~ 90 DEG C, time of drying 6 ~ 8h.
The temperature that described low temperature leads to oxygen condition is 60 ~ 80 DEG C, and the logical oxygen time is 8 ~ 10h.
(3): the preparation of anti-radiation ceramics coating: more under agitation, example adds functional polyorganosiloxane prepolymer in mass ratio, solvent, denatured conductive function powder, auxiliary agent mixes, and mixing temperature is 40 ~ 60 DEG C, and mixing time is 40 ~ 45min, adopt the method for ultrasonic froth breaking again, after eliminating bubble, obtain the required anti-radiation ceramics coating that can be used for subway station.
In described functional siloxane prepolymer preparation, siloxanes is the mixture of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane, and the molar ratio of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane is 1: 0.05 ~ 0.40, and methyl trialkoxysilane is a kind of in methyltrimethoxy silane, Union carbide A-162 or mixture.The epoxide group ring opening hydrolysis in acid condition contained in 3-glycidoxypropyl Trimethoxy silane, generate hydroxyl, the bonding force of coating and base material can be improved, 3-glycidoxypropyl Trimethoxy silane backbone simultaneously, make the formation dendrimer of coating, siloxanes PhastGel process after reduction condensation, thus improve system stability, be beneficial to and prepare one-component coating, realize the standing storage of polysiloxane coating materials.Cured silicone can carry out conventional solidified simultaneously, and after solidification, formation has three-dimensional crosslinking structure, and coating hardness is high, has excellent adhesion strength.
The centrosome diameter of described four acicular type zinc oxide crystal whisker 0.7 ~ 1.0 μm, needles base diameter 0.5 ~ 1.5 μm, needles length is 3 ~ 5 μm, and the ultrasonic disperse time is 30 ~ 45min, the volume ratio of water and alcohol is 1: 1 ~ 5, and the mass concentration of four acicular type zinc oxide crystal whisker is 0.1 ~ 2.5g/L.Four acicular type zinc oxide crystal whisker material has excellent suction ripple, the function such as antistatic and antibacterial, simultaneously due to the nanometer size effect of the needle-shaped tip of four acicular type zinc oxide crystal whisker own, and the nano active at tip has the excellent electric property such as semi-conductor conduction, piezoelectricity, simultaneously by after fixing with siloxane reactions, after making coating film forming, electroconductibility is even, and by most advanced and sophisticated nano active, the residual assorted modification of trace is carried out to conductive powder body, improve the conductivity of powder, thus improve body radiation resistance.Its outstanding micron level acicular structure of four acicular type zinc oxide crystal whisker plays the effect of enhancing to coating simultaneously, by the entanglement effect of crosslinked and siloxanes and the acicular structure between siloxanes, improves cracking resistance and the shock resistance of coating.
In described functional siloxane prepolymer preparation, composite catalyst is the mixture of acetic acid and ammoniacal liquor, and its volume ratio is 1: 8 ~ 12.
The preparation of described functional polyorganosiloxane prepolymer is that under routine, carry out mixing time be 30 ~ 60min for siloxanyl monomers and catalyzer and four acicular type zinc oxide crystal whisker; and then under 35 ~ 50 DEG C of conditions ultrasonic 60-90min; prepare functional polyorganosiloxane prepolymer; routine is adopted to mix supersound process again; be beneficial to inorganic nanoparticles dispersed; make nano-powder while dispersion simultaneously; realize the protection process of surperficial siloxanes; reduce the activation energy of nano grain surface, avoid polysiloxane transition gel to be difficult to the problem stored.
In the preparation process of described grey conducting function powder, tin-salt solution is the water of tin chloride solution, wherein the solubility of tin ion is 0.1 ~ 1.5mol/L, the addition of carbon black powder is 10 ~ 30g/L, and the pH of described solution is 3.5 ~ 5.0, regulates with nitric acid, hydrochloric acid.Employing acidic solution carries out the absorption to metal ion tin, can activate carbon blacksurface, and be beneficial to and improve carbon black to metal biosorption, acid system avoids the precipitation of tin metal ion simultaneously, is beneficial to the carrying out of adsorption process.
Ultrasonic disperse absorption in the preparation process of described radiation proof function powder, ultrasonic disperse adsorption temp is 25 ~ 65 DEG C, and the time is 45 ~ 90min; Ultrasonic absorption, ensureing under the prerequisite that carbon black disperses in metal ion solution, carbon black is adsorbed in metal ion solution, simultaneously due to ultrasonic dissemination, avoid the concentration difference because of metal ion in the solution in conventional adsorption process, cause in powder adsorption process, the transition in region of metal ion is adsorbed, the effect of ultrasonic disperse simultaneously, makes at metal ion stronger at surface adsorption reactive force, and is beneficial to the reductive action of rear road and carbon blacksurface group.
In the preparation process of described grey conducting function powder, centrifugal separation processes centrifugal rotational speed is 4500 ~ 6000r/min, and during hermetically drying, bake out temperature is 80 ~ 90 DEG C, time of drying 6 ~ 8h; Hermetically drying can make powder drying, utilizes powder to carry out reduction reaction with charcoal under certain steam and temperature condition simultaneously, reaches the not only dry but also effect of reducing; It is 60 ~ 80 DEG C that described low temperature leads to its temperature of oxygen, the logical oxygen time is 8 ~ 10h, carbon blacksurface is made to generate fine and close fin oxide condutire particle, by long-time low temperature lead to oxygen reaction be beneficial to reduction after tin stannic oxide under Oxygen Condition slowly carry out, make the radioprotective powder of the carbon black powder grizzle of black.Simultaneous oxidation tin has the residual assorted effect of semi-conductor, improves electroconductibility and the magnetic property of powder.
Compared with prior art, positively effect of the present invention is:
The manufacture method of a kind of anti-radiation ceramics coating for subway station of the present invention, it is mainly produced with the method for substep sol-gel, realizes the ambient cure of ceramic coating and long-term preservation, by preparing polysiloxane prepolymers, denatured conductive powder is radiation proof function additive, again when prepared by ceramic coating, adding the aerosil with thixotropic property is thickening thixotropic agent, both ensure that coating had viscosity higher in the processes such as maintenance and transport, and not easily transition is crosslinked and reunite to make coating, ensure that coating has lower viscosity and is beneficial to coating in spraying process simultaneously, adopt the ZnOw with four needle-likes as the agent of polysiloxane matrix conductiving doping simultaneously, utilize the semiconductor doping characteristic of four acicular type zinc oxide crystal whisker, while improving matrix conductivity, and utilize its whisker structure respectively to the effect of abnormity, improve shock resistance and the splitting resistance of coating, four acicular type zinc oxide crystal whisker is by siloxanes at its Surface coating simultaneously, realizes the blended addition of its Typical physical large, and doping weak effect, be easy to the problems such as reunion, radioprotective powder carries out absorption by the carbon black after acidifying to be fixed, and absorption fixed environment is acid, both improve the activity of carbon black, be conducive to again the absorption of tin ion, utilize carbon black and quadrivalent metallic ion tin generation reductive action in drying process simultaneously, realize the Surface coating fixing formation tin protoxide of tin ion at carbon black, and adopt low temperature to lead to the method for oxygen, make unstable tin salt under the effect of oxidation, administration measure and there is electric action and semiconductor doping effect and there is the tindioxide of grey, adopt absorbing and reducing in the method for oxidation, not only can improve the electroconductibility of single carbon black and the radiation resistance of conductive powder body, can also realize conventional conductive coating has single black transitions to be grey simultaneously, and for simple just metal interpolation, the addition of metal can be reduced and keep the electroconductibility of the excellence of coating and the high unity of color.A kind of grey anti-radiation ceramics coating for subway station of the present invention and production method thereof are applied to the radiation shielding coating such as underground engines, subway station and have excellent high shielding property, low cost and the characteristic such as heatproof, difficult combustion, have a extensive future.
[embodiment]
The embodiment of the manufacture method of a kind of anti-radiation ceramics coating for subway station of the present invention is below provided.
Embodiment 1
For an anti-radiation ceramics coating for subway station, its feed composition parts by weight are:
Described solvent is Virahol, propyl carbinol, ethylene glycol monomethyl ether or their mixture.
Described auxiliary agent is Amino End Group modified silicon oil, and the weight-average molecular weight of described Amino End Group modified silicon oil is 3000 ~ 50000; Adopt Amino End Group modified silicon oil at reduction diagram of system surface tension, while being beneficial to the spraying film forming of coating, auxiliary agent middle-end amino group has sequestering action to metallic tin, simultaneously by the backbone of auxiliary agent, radioprotective powder is wound around, sedimentation after avoiding function powder to be prepared into coating again, improves the storge quality of coating.
Described silicon dioxide aerosol is granularity is 20 ~ 50nm, and silica content is 40 ~ 60%.Silicon dioxide aerosol has excellent thixotropic property, makes coating have higher viscosity static making, prevents coating from precipitating, and in coating procedure, have lower viscosity, be beneficial to spraying, and make coating carry out adhesive solidification, realize even coating procedure.
For a manufacture method for the anti-radiation ceramics coating of subway station, comprise following steps:
(1): the preparation of functional polyorganosiloxane prepolymer: four acicular type zinc oxide crystal whisker adopts the mixed solvent of deionized water and alcohol to carry out ultrasonic disperse, after scattered, then in dispersion liquid, acetic acid and ammoniacal liquor composite catalyst is added, the pH of regulation system is 2.0 ~ 4.0, add siloxanyl monomers again, and the molar ratio of siloxanyl monomers and deionized water is 1: 5, mix under routine, and then ultrasonic under 35 ~ 50 DEG C of temperature condition, obtain required functional polyorganosiloxane prepolymer.
In described functional siloxane prepolymer preparation, siloxanes is the mixture of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane, and the molar ratio of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane is 1: 0.1, and methyl trialkoxysilane is a kind of in methyltrimethoxy silane, Union carbide A-162 or mixture.
The centrosome diameter of described four acicular type zinc oxide crystal whisker 0.7 ~ 1.0 μm, needles base diameter 0.5 ~ 1.5 μm, needles length is 3 ~ 5 μm, and the ultrasonic disperse time is 30 ~ 45min, and the mass concentration of four acicular type zinc oxide crystal whisker is 0.1g/L.
In described mixed solvent, the molar ratio of deionized water and alcohol is 1: 1, and alcohol used is a kind of in Virahol, ethanol.
(2): the preparation of radiation proof function powder: in tin-salt solution, add carbon black powder, and then adopt the method for ultrasonic disperse limit, limit adsorbing metal ions; Tin ion is fully adsorbed at carbon blacksurface further, centrifugation is adopted after absorption, then sealing is reduced and dries powder, again under low temperature leads to oxygen condition, heat, make tin ion reduce at carbon blacksurface and produce the stannic oxide with grey, the anti-radiation of powder is provided, prepares the preparation of radiation proof function powder;
Tin-salt solution is the water of tin chloride solution, and wherein, the solubility of tin ion is 0.1mol/L, and the addition of carbon black powder is 10g/L, and the pH of described solution is 3.5 ~ 5.0, regulates with nitric acid, hydrochloric acid.
Adsorption temp during described ultrasonic disperse is 25 ~ 65 DEG C, and the time is 45 ~ 90min.
Centrifugal rotational speed during described centrifugal separation processes is 4500 ~ 6000r/min.
The dry condition of described sealing reduction is bake out temperature is 80 ~ 90 DEG C, time of drying 6 ~ 8h.
The temperature that described low temperature leads to oxygen condition is 60 ~ 80 DEG C, and the logical oxygen time is 8 ~ 10h.
(3): the preparation of anti-radiation ceramics coating: more under agitation, example adds functional polyorganosiloxane prepolymer in mass ratio, solvent, denatured conductive function powder, auxiliary agent mixes, and mixing temperature is 40 ~ 60 DEG C, and mixing time is 40 ~ 45min, adopt the method for ultrasonic froth breaking again, after eliminating bubble, obtain the required anti-radiation ceramics coating that can be used for subway station.
Embodiment 2
For an anti-radiation ceramics coating for subway station, its feed composition parts by weight are:
Described solvent is Virahol, propyl carbinol, ethylene glycol monomethyl ether or their mixture.
Described auxiliary agent is Amino End Group modified silicon oil, and the weight-average molecular weight of described Amino End Group modified silicon oil is 3000 ~ 50000; Adopt Amino End Group modified silicon oil at reduction diagram of system surface tension, while being beneficial to the spraying film forming of coating, auxiliary agent middle-end amino group has sequestering action to metallic tin, simultaneously by the backbone of auxiliary agent, radioprotective powder is wound around, sedimentation after avoiding function powder to be prepared into coating again, improves the storge quality of coating.
Described silicon dioxide aerosol is granularity is 20 ~ 50nm, and silica content is 40 ~ 60%.Silicon dioxide aerosol has excellent thixotropic property, makes coating have higher viscosity static making, prevents coating from precipitating, and in coating procedure, have lower viscosity, be beneficial to spraying, and make coating carry out adhesive solidification, realize even coating procedure.
For a manufacture method for the anti-radiation ceramics coating of subway station, comprise following steps:
(1): the preparation of functional polyorganosiloxane prepolymer: four acicular type zinc oxide crystal whisker adopts the mixed solvent of deionized water and alcohol to carry out ultrasonic disperse, after scattered, then in dispersion liquid, acetic acid and ammoniacal liquor composite catalyst is added, the pH of regulation system is 2.0 ~ 4.0, add siloxanyl monomers again, and the molar ratio of siloxanyl monomers and deionized water is 1: 10, mix under routine, and then ultrasonic under 35 ~ 50 DEG C of temperature condition, obtain required functional polyorganosiloxane prepolymer.
In described functional siloxane prepolymer preparation, siloxanes is the mixture of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane, and the molar ratio of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane is 1: 0.25, and methyl trialkoxysilane is a kind of in methyltrimethoxy silane, Union carbide A-162 or mixture.
The centrosome diameter of described four acicular type zinc oxide crystal whisker 0.7 ~ 1.0 μm, needles base diameter 0.5 ~ 1.5 μm, needles length is 3 ~ 5 μm, and the ultrasonic disperse time is 30 ~ 45min, and the mass concentration of four acicular type zinc oxide crystal whisker is 2g/L.
In described mixed solvent, the molar ratio of deionized water and alcohol is 1: 3, and alcohol used is a kind of in Virahol, ethanol.
(2): the preparation of radiation proof function powder: in tin-salt solution, add carbon black powder, and then adopt the method for ultrasonic disperse limit, limit adsorbing metal ions; Tin ion is fully adsorbed at carbon blacksurface further, centrifugation is adopted after absorption, then sealing is reduced and dries powder, again under low temperature leads to oxygen condition, heat, make tin ion reduce at carbon blacksurface and produce the stannic oxide with grey, the anti-radiation of powder is provided, prepares the preparation of radiation proof function powder;
Tin-salt solution is the water of tin chloride solution, and wherein, the solubility of tin ion is 1mol/L, and the addition of carbon black powder is 20g/L, and the pH of described solution is 3.5 ~ 5.0, regulates with nitric acid, hydrochloric acid.
Adsorption temp during described ultrasonic disperse is 25 ~ 65 DEG C, and the time is 45 ~ 90min.
Centrifugal rotational speed during described centrifugal separation processes is 4500 ~ 6000r/min.
The dry condition of described sealing reduction is bake out temperature is 80 ~ 90 DEG C, time of drying 6 ~ 8h.
The temperature that described low temperature leads to oxygen condition is 60 ~ 80 DEG C, and the logical oxygen time is 8 ~ 10h.
(3): the preparation of anti-radiation ceramics coating: more under agitation, example adds functional polyorganosiloxane prepolymer in mass ratio, solvent, denatured conductive function powder, auxiliary agent mixes, and mixing temperature is 40 ~ 60 DEG C, and mixing time is 40 ~ 45min, adopt the method for ultrasonic froth breaking again, after eliminating bubble, obtain the required anti-radiation ceramics coating that can be used for subway station.
Embodiment 3
For an anti-radiation ceramics coating for subway station, its feed composition parts by weight are:
Described solvent is Virahol, propyl carbinol, ethylene glycol monomethyl ether or their mixture.
Described auxiliary agent is Amino End Group modified silicon oil, and the weight-average molecular weight of described Amino End Group modified silicon oil is 3000 ~ 50000; Adopt Amino End Group modified silicon oil at reduction diagram of system surface tension, while being beneficial to the spraying film forming of coating, auxiliary agent middle-end amino group has sequestering action to metallic tin, simultaneously by the backbone of auxiliary agent, radioprotective powder is wound around, sedimentation after avoiding function powder to be prepared into coating again, improves the storge quality of coating.
Described silicon dioxide aerosol is granularity is 20 ~ 50nm, and silica content is 40 ~ 60%.Silicon dioxide aerosol has excellent thixotropic property, makes coating have higher viscosity static making, prevents coating from precipitating, and in coating procedure, have lower viscosity, be beneficial to spraying, and make coating carry out adhesive solidification, realize even coating procedure.
For a manufacture method for the anti-radiation ceramics coating of subway station, comprise following steps:
(1): the preparation of functional polyorganosiloxane prepolymer: four acicular type zinc oxide crystal whisker adopts the mixed solvent of deionized water and alcohol to carry out ultrasonic disperse, after scattered, then in dispersion liquid, acetic acid and ammoniacal liquor composite catalyst is added, the pH of regulation system is 2.0 ~ 4.0, add siloxanyl monomers again, and the molar ratio of siloxanyl monomers and deionized water is 1: 15, mix under routine, and then ultrasonic under 35 ~ 50 DEG C of temperature condition, obtain required functional polyorganosiloxane prepolymer.
In described functional siloxane prepolymer preparation, siloxanes is the mixture of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane, and the molar ratio of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane is 1: 0.40, and methyl trialkoxysilane is a kind of in methyltrimethoxy silane, Union carbide A-162 or mixture.
The centrosome diameter of described four acicular type zinc oxide crystal whisker 0.7 ~ 1.0 μm, needles base diameter 0.5 ~ 1.5 μm, needles length is 3 ~ 5 μm, and the ultrasonic disperse time is 30 ~ 45min, and the mass concentration of four acicular type zinc oxide crystal whisker is 2.5g/L.
In described mixed solvent, the molar ratio of deionized water and alcohol is 1: 5, and alcohol used is a kind of in Virahol, ethanol.
(2): the preparation of radiation proof function powder: in tin-salt solution, add carbon black powder, and then adopt the method for ultrasonic disperse limit, limit adsorbing metal ions; Tin ion is fully adsorbed at carbon blacksurface further, centrifugation is adopted after absorption, then sealing is reduced and dries powder, again under low temperature leads to oxygen condition, heat, make tin ion reduce at carbon blacksurface and produce the stannic oxide with grey, the anti-radiation of powder is provided, prepares the preparation of radiation proof function powder;
Tin-salt solution is the water of tin chloride solution, and wherein, the solubility of tin ion is 1.5mol/L, and the addition of carbon black powder is 30g/L, and the pH of described solution is 3.5 ~ 5.0, regulates with nitric acid, hydrochloric acid.
Adsorption temp during described ultrasonic disperse is 25 ~ 65 DEG C, and the time is 45 ~ 90min.
Centrifugal rotational speed during described centrifugal separation processes is 4500 ~ 6000r/min.
The dry condition of described sealing reduction is bake out temperature is 80 ~ 90 DEG C, time of drying 6 ~ 8h.
The temperature that described low temperature leads to oxygen condition is 60 ~ 80 DEG C, and the logical oxygen time is 8 ~ 10h.
(3): the preparation of anti-radiation ceramics coating: more under agitation, example adds functional polyorganosiloxane prepolymer in mass ratio, solvent, denatured conductive function powder, auxiliary agent mixes, and mixing temperature is 40 ~ 60 DEG C, and mixing time is 40 ~ 45min, adopt the method for ultrasonic froth breaking again, after eliminating bubble, obtain the required anti-radiation ceramics coating that can be used for subway station.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (11)
1. for an anti-radiation ceramics coating for subway station, it is characterized in that, feed composition parts by weight are:
2. a kind of anti-radiation ceramics coating for subway station as claimed in claim 1, it is characterized in that, described auxiliary agent is Amino End Group modified silicon oil, and the weight-average molecular weight of described Amino End Group modified silicon oil is 3000 ~ 50000.
3., for a manufacture method for the anti-radiation ceramics coating of subway station, it is characterized in that, it comprises following steps:
(1): the preparation of functional polyorganosiloxane prepolymer: four acicular type zinc oxide crystal whisker adopts the mixed solvent of deionized water and alcohol to carry out ultrasonic disperse, after scattered, then in dispersion liquid, acetic acid and ammoniacal liquor composite catalyst is added, the pH of regulation system is 2.0 ~ 4.0, add siloxanyl monomers again, and the molar ratio of siloxanyl monomers and mixed solvent is 1: 5 ~ 15, mix under routine, and then ultrasonic under 35 ~ 50 DEG C of temperature condition, obtain required functional polyorganosiloxane prepolymer;
(2): the preparation of radiation proof function powder: in tin-salt solution, add carbon black powder, and then adopt the method for ultrasonic disperse limit, limit adsorbing metal ions; Tin ion is fully adsorbed at carbon blacksurface further, centrifugation is adopted after absorption, then sealing is reduced and dries powder, again under low temperature leads to oxygen condition, heat, make tin ion reduce at carbon blacksurface and produce the stannic oxide with grey, the anti-radiation of powder is provided, prepares the preparation of radiation proof function powder;
(3): the preparation of anti-radiation ceramics coating: more under agitation, example adds functional polyorganosiloxane prepolymer in mass ratio, solvent, denatured conductive function powder, auxiliary agent mixes, and mixing temperature is 40 ~ 60 DEG C, and mixing time is 40 ~ 45min, adopt the method for ultrasonic froth breaking again, after eliminating bubble, obtain the required anti-radiation ceramics coating that can be used for subway station.
4. the manufacture method of a kind of anti-radiation ceramics coating for subway station as claimed in claim 3, it is characterized in that, in described step (), the centrosome diameter of described four acicular type zinc oxide crystal whisker 0.7 ~ 1.0 μm, needles base diameter 0.5 ~ 1.5 μm, needles length is 3 ~ 5 μm, and the ultrasonic disperse time is 30 ~ 45min, and the mass concentration of four acicular type zinc oxide crystal whisker is 0.1 ~ 2.5g/L.
5. the manufacture method of a kind of anti-radiation ceramics coating for subway station as claimed in claim 3, it is characterized in that, in described step (), in described functional siloxane prepolymer preparation, siloxanes is the mixture of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane, and the molar ratio of methyl trialkoxysilane and 3-glycidoxypropyl Trimethoxy silane is 1: 0.05 ~ 0.40, and methyl trialkoxysilane is a kind of in methyltrimethoxy silane, Union carbide A-162 or mixture.
6. the manufacture method of a kind of anti-radiation ceramics coating for subway station as claimed in claim 3, it is characterized in that, in described step (two), tin-salt solution is the water of tin chloride solution, wherein, the solubility of tin ion is 0.1 ~ 1.5mol/L, and the addition of carbon black powder is 10 ~ 30g/L, the pH of described solution is 3.5 ~ 5.0, regulates with nitric acid, hydrochloric acid.
7. the manufacture method of a kind of anti-radiation ceramics coating for subway station as claimed in claim 3, is characterized in that, in described step (two), adsorption temp during described ultrasonic disperse is 25 ~ 65 DEG C, and the time is 45 ~ 90min.
8. the manufacture method of a kind of anti-radiation ceramics coating for subway station as claimed in claim 3, is characterized in that, in described step (two), centrifugal rotational speed during described centrifugal separation processes is 4500 ~ 6000r/min.
9. the manufacture method of a kind of anti-radiation ceramics coating for subway station as claimed in claim 3, it is characterized in that, in described step (two), the dry condition of described sealing reduction is bake out temperature is 80 ~ 90 DEG C, time of drying 6 ~ 8h.
10. the manufacture method of a kind of anti-radiation ceramics coating for subway station as claimed in claim 3, it is characterized in that, in described step (two), the logical oxygen temperature that described low temperature leads to oxygen condition is 60 ~ 80 DEG C, and the logical oxygen time is 8 ~ 10h.
The manufacture method of 11. a kind of anti-radiation ceramics coating for subway station as claimed in claim 1, it is characterized in that, the viscosity of described anti-radiation ceramics coating is 3000 ~ 8000mPs (20 DEG C, 6r/min), and thixotroping value is 1.5 ~ 2.5.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300004A (en) * | 2017-08-17 | 2018-07-20 | 济宁利特纳米防腐材料有限公司 | A kind of graphene heat conduction slurry and preparation method thereof |
| CN113683909A (en) * | 2021-09-02 | 2021-11-23 | 上海大学 | Nano bismuth oxide anti-radiation ceramic coating, preparation method and application |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300004A (en) * | 2017-08-17 | 2018-07-20 | 济宁利特纳米防腐材料有限公司 | A kind of graphene heat conduction slurry and preparation method thereof |
| CN113683909A (en) * | 2021-09-02 | 2021-11-23 | 上海大学 | Nano bismuth oxide anti-radiation ceramic coating, preparation method and application |
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