CN102559045A - Organosilicon protective coating and preparation method thereof - Google Patents
Organosilicon protective coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an organosilicon protective coating and a preparation method thereof, relates to a coating and a preparation method thereof, and aims at solving the problems of low heat resistant temperature, high curing temperature and long curing time existing in the conventional organosilicon resin coating. The organosilicon protective coating is prepared from methylphenyl silicone resin, talcum powder, Al2O3, kaolin, TiO2, SiO2 and toluene. The preparation method of the organosilicon protective coating comprises the following steps of: 1, weighing the raw materials; 2, ball-milling an inorganic filler to obtain an inorganic filler premix; 3, mixing the methylphenyl silicone resin and the toluene to obtain mixed solution; 4, adding the inorganic filler premix into the mixed solution to obtain a paint; and 5, preparing the coating on a substrate by using a blade coating method, and curing in a drying oven at 120 DEG C for 1-2 hours to obtain the organosilicon protective coating. The process is simple; the prepared coating is uniform and compact, has high water resistance and heat resistance and can be used at the temperature of 800 DEG C. The preparation method is used for preparing the organosilicon protective coating.
Description
Technical field
The present invention relates to a kind of coating and preparation method thereof.
Background technology
Materials such as some pottery, metal can't directly satisfy the request for utilization of severe environment such as high Mach number, high temperature, so the utmost point is necessary this type material is protected, and solve the effective measure of this type of problem just at the resistant to elevated temperatures protective coating of its surface-coated.Silicone resin is to study and use a more type coating film forming matter at present; Have good corrosion-resistant, radiation hardness, anti-atmospheric aging, electrical insulating property and water-repellancy etc.; The heat resisting temperature of this type coating is generally between 300～500 ℃ at present; This has greatly restricted the equipment that need under higher temperature, work, like the application and the development of equipment such as radome, aircraft engine, internal combustion turbine; In addition silicone resin also exist solidification value high (being generally 150～300 ℃), set time long (be generally 12～20h), to problems such as the physical strength of the poor adhesive force of base material, paint film are lower.
Summary of the invention
The present invention will solve existing silicone resin coating to have the problem that heat resisting temperature is low, solidification value is high, set time is long, and a kind of organosilicon protective coating and preparation method thereof is provided.
A kind of organosilicon protective coating of the present invention is by ratio of weight and the number of copies by 18～32 parts of methyl phenyl silicone resins, 6～11 parts of talcum powder, 3～6 parts of Al
2O
3, 13～24 parts of kaolin, 3～6 parts of TiO
2, 0.4～1 part of SiO
2Be prepared from 3～8.6 parts of toluene.
The preparation method of above-mentioned organosilicon protective coating carries out according to the following steps: one, take by weighing 6～11 parts of talcum powder, 3～6 parts of Al by ratio of weight and the number of copies
2O
3, 13～24 parts of kaolin, 3～6 parts of TiO
2, 0.4～1 part of SiO
2, 18～32 parts of methyl phenyl silicone resin and 3～8.6 parts of toluene; Two, with the talcum powder that takes by weighing in the step 1, Al
2O
3, kaolin, TiO2 and SiO
2Put into ball mill, ball material mass ratio is (3～8): 5, and at rotating speed ball milling 6～10h under the condition of 380～500r/min, obtain mineral filler Preblend; Three, the methyl phenyl silicone resin that takes by weighing in the step 1 is mixed with toluene, obtain mixed solution; Four, the mineral filler Preblend with the step 2 gained joins in the mixed solution of step 3, and ultra-sonic dispersion 20～30min obtains coating; Five, the coating that step 4 is obtained adopts the method for blade coating in substrate, to be prepared into the coating that thickness is 0.2～0.3mm, and substrate and coating are placed in 120 ℃ of baking ovens, solidifies 1～2h, obtains the organosilicon protective coating.
During the present invention was raw materials used, methyl phenyl silicone resin was the coating film forming matter, and it has good heat-resisting, weather resistance, is the staple of coating, plays the effect of external phase, can improve the sticking power of coating to base material, improved the over-all properties of coating; Talcum powder possesses good stream, the resistivity against fire of helping, and fusing point height, chemical torpescence, adsorptive power are strong, can suppress the sedimentation of inorganic components, make coating level and smooth, also can improve coating hardness, increase the fineness of coating; Al
2O
3Be intermediate oxide, chemicalstability is high, but coating improves the thermotolerance of coating, reduce thermal expansivity, and it at high temperature can react and plug the gap with other materials; Kaolin has good plasticity-, high cohesiveness reaches resistivity against fire preferably, can increase the adhesiveproperties and the thermotolerance of coating and base material; TiO
2Have good light scattering ability, have good resistance to elevated temperatures and chemicalstability simultaneously, can the stability of medium be played a protective role; And the physical strength and the sticking power of ability enhancement coating; Prevent crackle, prevent that ultraviolet ray and moisture from seeing through, and prolongs coating life; SiO
2Be mainly used in the intensity that increases coating; Toluene is solvent, and its consumption can not be too much, otherwise can cause dope viscosity low excessively, and film forming properties is poor, also can not be very few, otherwise can in solidification process, produce bubble, influence coating performance.
The invention has the beneficial effects as follows: the prepared coating even compact of the present invention, fillers dispersed is even in the coating, and filler combines effective with base-material; Coating hardness is higher, and its hardness is 6H; Water-resistant coating is good, thermotolerance is higher, and quenching is to room temperature behind 800 ℃ of following ablation 30min, and coating does not have cracking, obscission; Easy to use, adhesiveproperties is good; The inventive method technology is simple, compares with traditional method, and the solidification value of coating is reduced to 120 ℃; Reduce to 1～2h set time; Each item of gained coating is functional, and its use temperature is brought up to 800 ℃, and the use temperature of more existing silicone resin coating has improved 300～500 ℃.
Description of drawings
Fig. 1 is thermogravimetric (TG) graphic representation, and dotted line is represented the TG curve of the organosilicon protective coating of embodiment 6, the TG curve of solid line represent methylidene phenyl polysiloxane; Fig. 2 is the photo of the organosilicon protective coating of embodiment 6; Fig. 3 be organosilicon protective coating among Fig. 2 at 800 ℃, the photo of quenching to room temperature behind the ablation 30min; Fig. 4 is that the organosilicon protective coating of embodiment 6 at room temperature soaks the photo after 5 days in zero(ppm) water; Fig. 5 is the stereoscan photograph of the organosilicon protective coating of embodiment 6.
Embodiment
Technical scheme of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: a kind of organosilicon protective coating of this embodiment is by ratio of weight and the number of copies by 18～32 parts of methyl phenyl silicone resins, 6～11 parts of talcum powder, 3～6 parts of Al
2O
3, 13～24 parts of kaolin, 3～6 parts of TiO
2, 0.4～1 part of SiO
2Be prepared from 3～8.6 parts of toluene.
The beneficial effect of this embodiment is: the prepared coating even compact of this embodiment, and fillers dispersed is even in the coating, and filler combines effective with base-material; Coating hardness is higher, and its hardness is 6H; Water-resistant coating is good, thermotolerance is higher, can satisfy 800 ℃ request for utilization, and quenching is to room temperature behind 800 ℃ of following ablation 30min, and coating does not have cracking, obscission; Easy to use, adhesiveproperties is good.
Embodiment two: what this embodiment and embodiment one were different is: methyl phenyl silicone resin is that preparation method according to silicone resin among the Chinese patent ZL200310107691.7 is prepared from this embodiment, and concrete grammar is following:
The four-hole bottle of the 250mL that whisking appliance, tap funnel, reflux condensing tube and TM are housed is placed water-bath.In four-hole bottle, add 100g water, 60g toluene and 20g acetone stir; In tap funnel, add 8gPh then
2SiCl
2, 18g PhSiCl
3, 9g (CH
3)
2SiCl
2, 15g (CH
3) SiCl
3, mix; Be warming up to 50 ℃ to four-hole bottle, the monomer in the beginning addition funnel, controlled temperature dropwises with 1h between 50～70 ℃ approximately; Dropwise continued and stir 30min; Reactor product is poured in the separating funnel, left standstill the branch water-yielding stratum, with 60 ℃ of zero(ppm) water washing solvents 4 times, with the prepolymer that obtains silicone resin among the NaOH with solvent layer to neutrality, the vacuum tightness of system is about 10mmHg then.At first, be warmed up to 120 ℃ then, make the further condensation of resin prepolymer at 70～80 ℃ of distilling off solvent toluene; Stop when not having water to distill in reaction, obtain methyl phenyl silicone resin.The molecular formula of gained methyl phenyl silicone resin is:
Other is identical with embodiment one.
Embodiment three: what this embodiment was different with embodiment one or two is: the organosilicon protective coating is by ratio of weight and the number of copies by 20～30 parts of methyl phenyl silicone resins, 8～10 parts of talcum powder, 4～5 parts of Al
2O
3, 15～22 parts of kaolin, 4～5 parts of TiO
2, 0.5～0.8 part of SiO
2Be prepared from 3.5～7 parts of toluene.Other is identical with embodiment one or two.
Embodiment four: the preparation method of a kind of organosilicon protective coating of this embodiment carries out according to the following steps: one, take by weighing 6～11 parts of talcum powder, 3～6 parts of Al by ratio of weight and the number of copies
2O
3, 13～24 parts of kaolin, 3～6 parts of TiO
2, 0.4～1 part of SiO
2, 18～32 parts of methyl phenyl silicone resin and 3～8.6 parts of toluene; Two, with the talcum powder that takes by weighing in the step 1, Al
2O
3, kaolin, TiO2 and SiO
2Put into ball mill, ball material mass ratio is (3～8): 5, and at rotating speed ball milling 6～10h under the condition of 380～500r/min, obtain mineral filler Preblend; Three, the methyl phenyl silicone resin that takes by weighing in the step 1 is mixed with toluene, obtain mixed solution; Four, the mineral filler Preblend with the step 2 gained joins in the mixed solution of step 3, and ultra-sonic dispersion 20～30min obtains coating; Five, the coating that step 4 is obtained adopts the method for blade coating in substrate, to be prepared into the coating that thickness is 0.2～0.3mm, and substrate and coating are placed in 120 ℃ of baking ovens, solidifies 1～2h, obtains the organosilicon protective coating.
In this embodiment, the particle size range of mineral filler Preblend is 300～600 orders behind the ball milling; The used ball of ball milling is an agate ball.
The beneficial effect of this embodiment is: the prepared coating even compact of this embodiment, and fillers dispersed is even in the coating, and filler combines effective with base-material; Coating hardness is higher, and its hardness is 6H; Water-resistant coating is good, thermotolerance is higher, can satisfy 800 ℃ request for utilization, and quenching is to room temperature behind 800 ℃ of following ablation 30min, and coating does not have cracking, obscission; Easy to use, adhesiveproperties is good; The inventive method technology is simple; Compare with traditional method, compare with traditional method, the solidification value of coating is reduced to 120 ℃; Reduce to 1～2h set time; Each item of gained coating is functional, and its use temperature is brought up to 800 ℃, and the use temperature of more existing silicone resin coating has improved 300～500 ℃.
Embodiment five: what this embodiment and embodiment four were different is: methyl phenyl silicone resin is that preparation method according to silicone resin among the Chinese patent ZL200310107691.7 is prepared from this embodiment, and concrete grammar is following:
The four-hole bottle of the 250mL that whisking appliance, tap funnel, reflux condensing tube and TM are housed is placed water-bath.In four-hole bottle, add 100g water, 60g toluene and 20g acetone stir; In tap funnel, add 8gPh then
2SiCl
2, 18gPhSiCl
3, 9g (CH
3)
2SiCl
2, 15g (CH
3) SiCl
3, mix; Be warming up to 50 ℃ to four-hole bottle, the monomer in the beginning addition funnel, controlled temperature dropwises with 1h between 50～70 ℃ approximately; Dropwise continued and stir 30min; Reactor product is poured in the separating funnel, left standstill the branch water-yielding stratum, with 60 ℃ of zero(ppm) water washing solvents 4 times, with the prepolymer that obtains silicone resin among the NaOH with solvent layer to neutrality, the vacuum tightness of system is about 10mmHg then.At first, be warmed up to 120 ℃ then, make the further condensation of resin prepolymer at 70～80 ℃ of distilling off solvent toluene; Stop when not having water to distill in reaction, obtain methyl phenyl silicone resin.The molecular formula of gained methyl phenyl silicone resin is:
Other is identical with embodiment four.
Embodiment six: what this embodiment was different with embodiment four or five is: take by weighing 8～10 parts of talcum powder, 4～5 parts of Al in the step 1 by ratio of weight and the number of copies
2O
3, 15～22 parts of kaolin, 4～5 parts of TiO
2, 0.5～0.8 part of SiO
2, 20～30 parts of methyl phenyl silicone resin and 3.5～7 parts of toluene.Other is identical with embodiment four or five.
Embodiment seven: what this embodiment was different with one of embodiment four to six is: the substrate in the step 5 is ceramic bases or metal base.Other is identical with one of embodiment four to six.
Ceramic bases in the present embodiment or metallic substrates can be the surfaces that antenna house, aero-engine, gas turbine etc. need carry out the equipment of heat protection.
Embodiment eight: what this embodiment was different with one of embodiment four to seven is: drum's speed of rotation is 400～450r/min in the step 2, and the ball milling time is 7～9h.Other is identical with one of embodiment four to seven.
Embodiment nine: what this embodiment was different with one of embodiment four to eight is: ultrasonic time is 22～28min in the step 4.Other is identical with one of embodiment four to eight.
Ultrasonic power is 300～700W in this embodiment.
Embodiment ten: what this embodiment was different with one of embodiment four to nine is that step 5 floating coat thickness is 0.22～0.28mm.Other is identical with one of embodiment four to nine.
Embodiment 11: this embodiment is different with one of embodiment four to ten be in the step 5 set time be 1.2～1.8h.Other is identical with one of embodiment four to ten.
Adopt following examples to verify beneficial effect of the present invention:
Embodiment 1
A kind of organosilicon protective coating is characterized in that the organosilicon protective coating is by ratio of weight and the number of copies by 18 parts of methyl phenyl silicone resins, 6.3 parts of talcum powder, 3.4 parts of Al
2O
3, 13.5 parts of kaolin, 3.4 parts of TiO
2, 0.4 part of SiO
2Be prepared from 3.6 parts of toluene.
Embodiment 2
A kind of organosilicon protective coating is characterized in that the organosilicon protective coating is by ratio of weight and the number of copies by 26 parts of methyl phenyl silicone resins, 9.2 parts of talcum powder, 5 parts of Al
2O
3, 19.5 parts of kaolin, 5 parts of TiO
2, 0.6 part of SiO
2Be prepared from 5.2 parts of toluene.
Embodiment 3
A kind of organosilicon protective coating is characterized in that the organosilicon protective coating is by ratio of weight and the number of copies by 31 parts of methyl phenyl silicone resins, 11 parts of talcum powder, 5.8 parts of Al
2O
3, 23 parts of kaolin, 5.8 parts of TiO
2, 0.7 part of SiO
2Be prepared from 6.5 parts of toluene.
Embodiment 4
A kind of organosilicon protective coating is characterized in that the organosilicon protective coating is by ratio of weight and the number of copies by 21 parts of methyl phenyl silicone resins, 7.4 parts of talcum powder, 4 parts of Al
2O
3, 15.7 parts of kaolin, 4 parts of TiO
2, 0.5 part of SiO
2Be prepared from 4.5 parts of toluene.
Embodiment 5
A kind of preparation method of organosilicon protective coating carries out according to the following steps: one, take by weighing 6.3 parts of talcum powder, 3.4 parts of Al by ratio of weight and the number of copies
2O
3, 13.5 parts of kaolin, 3.4 parts of TiO
2, 0.4 part of SiO
2, 18 parts of methyl phenyl silicone resin and 3.6 parts of toluene; Two, with the talcum powder that takes by weighing in the step 1, Al
2O
3, kaolin, TiO2 and SiO
2Put into ball mill, ball material mass ratio is 3: 5, is ball milling 8h under the condition of 380r/min at rotating speed, obtains mineral filler Preblend; Three, the methyl phenyl silicone resin that takes by weighing in the step 1 is mixed with toluene, obtain mixed solution; Four, the mineral filler Preblend with the step 2 gained joins in the mixed solution of step 3, and ultra-sonic dispersion 20min obtains coating; Five, the coating that step 4 is obtained adopts the method for blade coating on the SiC ceramic bases, to be prepared into the coating that thickness is 0.24mm, and substrate and coating are placed in 120 ℃ of baking ovens, solidifies 1h, obtains the organosilicon protective coating.
Embodiment 6
A kind of preparation method of organosilicon protective coating carries out according to the following steps: one, take by weighing 9.2 parts of talcum powder, 5 parts of Al by ratio of weight and the number of copies
2O
3, 19.5 parts of kaolin, 5 parts of TiO
2, 0.6 part of SiO
2, 26 parts of methyl phenyl silicone resin and 5.2 parts of toluene; Two, with the talcum powder that takes by weighing in the step 1, Al
2O
3, kaolin, TiO2 and SiO
2Put into ball mill, ball material mass ratio is 4: 5, is ball milling 9h under the condition of 380r/min at rotating speed, obtains mineral filler Preblend; Three, the methyl phenyl silicone resin that takes by weighing in the step 1 is mixed with toluene, obtain mixed solution; Four, the mineral filler Preblend with the step 2 gained joins in the mixed solution of step 3, and ultra-sonic dispersion 30min obtains coating; Five, the method that the coating that step 4 is obtained adopts blade coating is at Si
3N
4Be prepared into the coating that thickness is 0.27mm on the ceramic bases, substrate and coating are placed in 120 ℃ of baking ovens, solidify 1.5h, obtain the organosilicon protective coating.
Embodiment 7
A kind of preparation method of organosilicon protective coating carries out according to the following steps: one, take by weighing 11 parts of talcum powder, 5.8 parts of Al by ratio of weight and the number of copies
2O
3, 23 parts of kaolin, 5.8 parts of TiO
2, 0.7 part of SiO
2, 31 parts of methyl phenyl silicone resin and 6.5 parts of toluene; Two, with the talcum powder that takes by weighing in the step 1, Al
2O
3, kaolin, TiO2 and SiO
2Put into ball mill, ball material mass ratio is 6: 5, is ball milling 10h under the condition of 380r/min at rotating speed, obtains mineral filler Preblend; Three, the methyl phenyl silicone resin that takes by weighing in the step 1 is mixed with toluene, obtain mixed solution; Four, the mineral filler Preblend with the step 2 gained joins in the mixed solution of step 3, and ultra-sonic dispersion 30min obtains coating; Five, the coating that step 4 is obtained adopts the method for blade coating in the substrate of FGH95 superalloy, to be prepared into the coating that thickness is 0.3mm, and substrate and coating are placed in 120 ℃ of baking ovens, solidifies 2h, obtains the organosilicon protective coating.
Embodiment 8
A kind of preparation method of organosilicon protective coating carries out according to the following steps: one, take by weighing 7.4 parts of talcum powder, 4 parts of Al by ratio of weight and the number of copies
2O
3, 15.7 parts of kaolin, 4 parts of TiO
2, 0.5 part of SiO
2, 21 parts of methyl phenyl silicone resin and 4.5 parts of toluene; Two, with the talcum powder that takes by weighing in the step 1, Al
2O
3, kaolin, TiO2 and SiO
2Put into ball mill, ball material mass ratio is 8: 5, is ball milling 6h under the condition of 380r/min at rotating speed, obtains mineral filler Preblend; Three, the methyl phenyl silicone resin that takes by weighing in the step 1 is mixed with toluene, obtain mixed solution; Four, the mineral filler Preblend with the step 2 gained joins in the mixed solution of step 3, and ultra-sonic dispersion 25min obtains coating; Five, the method that the coating that step 4 is obtained adopts blade coating is at Si
3N
4Be prepared into the coating that thickness is 0.2mm on the ceramic bases, substrate and coating are placed in 120 ℃ of baking ovens, solidify 1h, obtain the organosilicon protective coating.
More than among 8 embodiment, the preparation method of methyl phenyl silicone resin is following:
The four-hole bottle of the 250mL that whisking appliance, tap funnel, reflux condensing tube and TM are housed is placed water-bath.In four-hole bottle, add 100g water, 60g toluene and 20g acetone stir; In tap funnel, add 8gPh then
2SiCl
2, 18gPhSiCl
3, 9g (CH
3)
2SiCl
2, 15g (CH
3) SiCl
3, mix; Be warming up to 50 ℃ to four-hole bottle, the monomer in the beginning addition funnel, controlled temperature dropwises with 1h between 50～70 ℃ approximately; Dropwise continued and stir 30min; Reactor product is poured in the separating funnel, left standstill the branch water-yielding stratum, with 60 ℃ of zero(ppm) water washing solvents 4 times, with the prepolymer that obtains silicone resin among the NaOH with solvent layer to neutrality, the vacuum tightness of system is about 10mmHg then.At first, be warmed up to 120 ℃ then, make the further condensation of resin prepolymer at 70～80 ℃ of distilling off solvent toluene; Stop when not having water to distill in reaction, obtain methyl phenyl silicone resin.The molecular formula of gained methyl phenyl silicone resin is:
Embodiment 6 prepared organosilicon protective coatings are tried, and the result is following:
Fig. 1 is the TG graphic representation, and dotted line is represented the TG curve of the organosilicon protective coating of embodiment 6, the TG curve of solid line represent methylidene phenyl polysiloxane.As can beappreciated from fig. 1, the heat decomposition temperature of methyl phenyl silicone resin is about 350 ℃, and the rate of weight loss in the time of 500 ℃ is 8%; The heat decomposition temperature of the organosilicon protective coating of embodiment 6 is about 430 ℃; Rate of weight loss in the time of 500 ℃ is 5.6%, compares with methyl phenyl silicone resin, and heat decomposition temperature improves; The thermal weight loss rate reduces, and thermotolerance is further improved.
Fig. 2 is the organosilicon protective coating photo of embodiment 6; Fig. 3 be organosilicon protective coating among Fig. 2 at 800 ℃, the photo of quenching to room temperature behind the ablation 30min.Can find out that the organosilicon protective coating does not have phenomenons such as aliquation, bubbling, cracking, variable color and takes place, the resistance toheat of coating is good.
Fig. 4 is that the organosilicon protective coating of embodiment 6 at room temperature soaks the photo after 5 days in zero(ppm) water.Can find out that organosilicon protective coating surface is complete, no wrinkling, phenomenon such as come off takes place, and the water resistance of coating is good.
Fig. 6 is the stereoscan photograph of the organosilicon protective coating of embodiment 6.Described organosilicon protective coating even compact, zero defect, the good dispersivity of mineral filler in the organosilicon film forming matter, filler combines effective with base-material.
The inventive method technology is simple, compares with traditional method, and the solidification value of coating is reduced to 120 ℃; Reduce to 1～2h set time; Each item of gained coating is functional, and its use temperature is brought up to 800 ℃, and the use temperature of more existing silicone resin coating has improved 300～500 ℃.
Claims (9)
1. an organosilicon protective coating is characterized in that the organosilicon protective coating is by ratio of weight and the number of copies by 18～32 parts of methyl phenyl silicone resins, 6～11 parts of talcum powder, 3～6 parts of Al
2O
3, 13～24 parts of kaolin, 3～6 parts of TiO
2, 0.4～1 part of SiO
2Be prepared from 3～8.6 parts of toluene.
2. a kind of organosilicon protective coating according to claim 1 is characterized in that the organosilicon protective coating is by ratio of weight and the number of copies by 20～30 parts of methyl phenyl silicone resins, 8～10 parts of talcum powder, 4～5 parts of Al
2O
3, 15～22 parts of kaolin, 4～5 parts of TiO
2, 0.5～0.8 part of SiO
2Be prepared from 3.5～7 parts of toluene.
3. the preparation method of a kind of organosilicon protective coating as claimed in claim 1 is characterized in that the preparation method of organosilicon protective coating carries out according to the following steps: one, take by weighing 6～11 parts of talcum powder, 3～6 parts of Al by ratio of weight and the number of copies
2O
3, 13～24 parts of kaolin, 3～6 parts of TiO
2, 0.4～1 part of SiO
2, 18～32 parts of methyl phenyl silicone resin and 3～8.6 parts of toluene;
Two, with the talcum powder that takes by weighing in the step 1, Al
2O
3, kaolin, TiO2 and SiO
2Put into ball mill, ball material mass ratio is (3～8): 5, and at rotating speed ball milling 6～10h under the condition of 380～500r/min, obtain mineral filler Preblend; Three, the methyl phenyl silicone resin that takes by weighing in the step 1 is mixed with toluene, obtain mixed solution; Four, the mineral filler Preblend with the step 2 gained joins in the mixed solution of step 3, and ultra-sonic dispersion 20～30min obtains coating; Five, the coating that step 4 is obtained adopts the method for blade coating in substrate, to be prepared into the coating that thickness is 0.2～0.3mm, and substrate and coating are placed in 120 ℃ of baking ovens, solidifies 1～2h, obtains the organosilicon protective coating.
4. the preparation method of a kind of organosilicon protective coating according to claim 3 is characterized in that taking by weighing by ratio of weight and the number of copies in the step 1 8～10 parts of talcum powder, 4～5 parts of Al
2O
3, 15～22 parts of kaolin, 4～5 parts of TiO
2, 0.5～0.8 part of SiO
2, 20～30 parts of methyl phenyl silicone resin and 3.5～7 parts of toluene.
5. the preparation method of a kind of organosilicon protective coating according to claim 4 is characterized in that drum's speed of rotation is 400～450r/min in the step 2, and the ball milling time is 7～9h.
6. the preparation method of a kind of organosilicon protective coating according to claim 5 is characterized in that ultrasonic time is 22～28min in the step 4.
7. the preparation method of a kind of organosilicon protective coating according to claim 6 is characterized in that the substrate in the step 5 is ceramic bases or metal base.
8. the preparation method of a kind of organosilicon protective coating according to claim 7 is characterized in that step 5 floating coat thickness is 0.22～0.28mm.
9. according to the preparation method of any described a kind of organosilicon protective coating of claim among the claim 3-8, it is characterized in that be 1.2～1.8h set time in the step 5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103525297A (en) * | 2013-10-17 | 2014-01-22 | 电子科技大学 | High-temperature-resistant, adiabatic and insulated coating applied to fuse protector and preparation method of coating |
| CN108250755A (en) * | 2017-12-27 | 2018-07-06 | 东莞市谷拓光电科技有限公司 | A kind of processing technology of mobile phone tempered glass film |
| CN108690214A (en) * | 2018-06-13 | 2018-10-23 | 哈尔滨工业大学 | A kind of modified silicone resin high temperature resistant heat insulation coating composite material and preparation method thereof |
| CN108795285A (en) * | 2018-06-28 | 2018-11-13 | 芜湖市棠华建材科技有限公司 | Metal water paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525297A (en) * | 2013-10-17 | 2014-01-22 | 电子科技大学 | High-temperature-resistant, adiabatic and insulated coating applied to fuse protector and preparation method of coating |
| CN108250755A (en) * | 2017-12-27 | 2018-07-06 | 东莞市谷拓光电科技有限公司 | A kind of processing technology of mobile phone tempered glass film |
| CN108690214A (en) * | 2018-06-13 | 2018-10-23 | 哈尔滨工业大学 | A kind of modified silicone resin high temperature resistant heat insulation coating composite material and preparation method thereof |
| CN108795285A (en) * | 2018-06-28 | 2018-11-13 | 芜湖市棠华建材科技有限公司 | Metal water paint |
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