CN114015268A - Inorganic nano ceramic fiber heat-insulating flame-retardant coating - Google Patents
Inorganic nano ceramic fiber heat-insulating flame-retardant coating Download PDFInfo
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Abstract
The invention discloses an inorganic nano ceramic fiber heat-insulating flame-retardant coating, which comprises the following components in percentage by mass: 15-20% of emulsion nano-silicon solution 10-15%, 0.05-0.15% of pH regulator, 0.1-0.3% of wetting agent, 0.3-0.7% of dispersing agent, 0.2-0.3% of antiseptic bactericide, 0.5-1.0% of film-forming assistant, 0.1-0.4% of defoaming agent, 0.1-0.35% of silane coupling agent, 0.15-0.3% of compatible stabilizer and 15-25% of titanium dioxide, the coating film-forming material in the invention is silicate and silica sol, has abundant sources, uses water as solvent, is nontoxic, has no peculiar smell and irritation, can be prepared into low VOC (volatile organic compound) or zero VOC coating, is a kind of environment-friendly coating with development potential, and simultaneously ceramic fiber is added into the coating as one of filler, and can improve the high temperature resistance, heat preservation and heat insulation performance and high temperature insulation performance of the whole coating, but also can make the coating have the characteristics of small hot melting and no toxicity.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an inorganic nano ceramic fiber heat-insulating flame-retardant coating.
Background
The coating is a viscous liquid prepared by coating on the surface of a protected or decorated object and forming a firmly attached continuous film with the coated object, generally by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliary agents and using an organic solvent or water.
For a long time, organic coatings are widely applied due to good decoration, variety diversity and low price, but because the main raw materials of organic building coatings are resources such as coal, petroleum, natural gas and the like, a large amount of byproducts, volatile solvents and residual monomers are generated during processing, so that environmental pollution is caused, and a large amount of resources and energy are wasted, meanwhile, after the organic coatings are coated on the surface of a wall for a period of time, the phenomena of hollowness prostitute, foaming and even peeling and falling of a coating film can occur, and compared with the defects of the organic coatings, the inorganic coatings have good air permeability, anti-contamination performance and excellent comprehensive environmental protection performance, so the research and application of inorganic building coatings become a development trend.
SUMMARY OF THE PATENT FOR INVENTION
The invention aims to provide an inorganic nano ceramic fiber heat-insulating flame-retardant coating, and in order to achieve the aim, the invention provides the following technical scheme: an inorganic nano ceramic fiber heat-insulation flame-retardant coating comprises the following components in percentage by mass: 15-20% of emulsion, 10-15% of nano-silicon solution, 0.05-0.15% of pH regulator, 0.1-0.3% of wetting agent, 0.3-0.7% of dispersing agent, 0.2-0.3% of antiseptic bactericide, 0.5-1.0% of film-forming additive, 0.1-0.4% of defoaming agent, 0.1-0.35% of silane coupling agent, 0.15-0.3% of compatible stabilizer, 15-25% of titanium pigment, 3-6% of talcum powder, 10-20% of ceramic fiber powder, 5-15% of heavy calcium powder, 0.2-0.6% of thickening agent and the balance of water.
Preferably, the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in parts by weight: 19 parts of emulsion, 11 parts of nano-silicon solution, 0.1 part of pH regulator, 0.2 part of wetting agent, 0.5 part of dispersant, 0.2 part of antiseptic bactericide, 0.65 part of film-forming assistant, 0.2 part of defoamer, 0.25 part of silane coupling agent, 0.2 part of compatible stabilizer, 20 parts of titanium dioxide, 4 parts of talcum powder, 13 parts of ceramic fiber powder, 8 parts of heavy calcium powder, 0.4 part of thickener and the balance of water.
A preparation method of an inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following steps: (1) mixing base materials: putting the emulsion and the nano-silicon solution in the proportion into a mechanical stirrer for stirring and mixing, and continuing for a certain time;
(2) adjusting the pH value: after the base materials are mixed, putting the pH regulator into the stirrer for regulating the pH value of the mixed solution;
(3) and (3) mixing of fillers: putting the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder into another mechanical stirrer for stirring, and fully mixing the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder to prepare a mixed filler;
(4) preparing the coating: adding the mixed filler, the wetting agent, the dispersing agent, the anticorrosive bactericide, the film-forming assistant, the silane coupling agent, the compatible stabilizer and water into the mechanical stirrer in the step one in sequence, and continuously stirring for a certain time;
(5) defoaming: and reducing the rotating speed of the mechanical stirrer, adding a part of defoaming agent into the mechanical stirrer, stirring for a certain time, reducing the rotating speed of the stirrer step by step, adding the rest defoaming agent into the stirrer, and stirring at a low speed for a certain time by the stirrer to obtain a coating finished product.
Preferably, in the step (1), the rotation speed of the mechanical stirrer is 500r/min and the duration time is 30min when the emulsion and the nano-silicon solution are mixed.
Preferably, in the step (2), hydrochloric acid with the concentration of 0.1mol/L is used as a pH regulator, and the pH value is regulated to 3-4.
Preferably, in the step (2), the rotation speed of the mechanical stirrer is adjusted to 200r/min during the pH value adjustment, and after the pH value adjustment is completed, the rotation speed of the mechanical stirrer is restored to 500r/min for 5 min.
Preferably, in the step (3), the rotation speed of the mechanical stirrer is 800r/min, and the duration time is 30 min.
Preferably, in the step (4), the rotation speed of the mechanical stirrer is 1800r/min, and the duration time is 3 h.
Preferably, in the step (5), the rotation speed of the mechanical stirrer during the addition of the defoaming agent is 500r/min, and the rotation speed of the mechanical stirrer during the addition of the remaining defoaming agent is gradually reduced at a speed of 100 r/min.
Compared with the prior art, the invention has the following beneficial effects:
the coating film forming material in the invention is silicate and silica sol, has rich sources, takes water as a solvent, is nontoxic, odorless and nonirritating, can be prepared into low VOC (volatile organic compound) or zero VOC coating, is an environment-friendly coating with development potential, and simultaneously ceramic fiber is added into the coating as one of fillers, so that the high temperature resistance, the heat preservation and the heat insulation of the whole coating can be improved by the ceramic fiber, and the coating has the characteristics of small hot melting and no toxicity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments in the present invention patent, and it is obvious that the described embodiments are only a part of the embodiments of the present invention patent, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.
An inorganic nano ceramic fiber heat-insulation flame-retardant coating comprises the following components in percentage by mass: 15-20% of emulsion, 10-15% of nano-silicon solution, 0.05-0.15% of pH regulator, 0.1-0.3% of wetting agent, 0.3-0.7% of dispersing agent, 0.2-0.3% of antiseptic bactericide, 0.5-1.0% of film-forming additive, 0.1-0.4% of defoaming agent, 0.1-0.35% of silane coupling agent, 0.15-0.3% of compatible stabilizer, 15-25% of titanium pigment, 3-6% of talcum powder, 10-20% of ceramic fiber powder, 5-15% of heavy calcium powder, 0.2-0.6% of thickening agent and the balance of water; the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in parts by weight: 19 parts of emulsion, 11 parts of nano-silicon solution, 0.1 part of pH regulator, 0.2 part of wetting agent, 0.5 part of dispersant, 0.2 part of antiseptic bactericide, 0.65 part of film-forming assistant, 0.2 part of defoamer, 0.25 part of silane coupling agent, 0.2 part of compatible stabilizer, 20 parts of titanium dioxide, 4 parts of talcum powder, 13 parts of ceramic fiber powder, 8 parts of heavy calcium powder, 0.4 part of thickener and the balance of water, wherein the preparation method comprises the following steps: (1) mixing base materials: putting the emulsion and the nano-silicon solution in the proportion into a mechanical stirrer for stirring and mixing, and continuing for a certain time;
(2) adjusting the pH value: after the base materials are mixed, putting the pH regulator into the stirrer for regulating the pH value of the mixed solution;
(3) and (3) mixing of fillers: putting the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder into another mechanical stirrer for stirring, and fully mixing the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder to prepare a mixed filler;
(4) preparing the coating: adding the mixed filler, the wetting agent, the dispersing agent, the anticorrosive bactericide, the film-forming assistant, the silane coupling agent, the compatible stabilizer and water into the mechanical stirrer in the step one in sequence, and continuously stirring for a certain time;
(5) defoaming: and reducing the rotating speed of the mechanical stirrer, adding a part of defoaming agent into the mechanical stirrer, stirring for a certain time, reducing the rotating speed of the stirrer step by step, adding the rest defoaming agent into the stirrer, and stirring at a low speed for a certain time by the stirrer to obtain a coating finished product.
The first embodiment is as follows:
the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in percentage by mass: 15-20% of emulsion, 10-15% of nano-silicon solution, 0.05-0.15% of pH regulator, 0.1-0.3% of wetting agent, 0.3-0.7% of dispersing agent, 0.2-0.3% of antiseptic bactericide, 0.5-1.0% of film-forming additive, 0.1-0.4% of defoaming agent, 0.1-0.35% of silane coupling agent, 0.15-0.3% of compatible stabilizer, 15-25% of titanium pigment, 3-6% of talcum powder, 10-20% of ceramic fiber powder, 5-15% of heavy calcium powder, 0.2-0.6% of thickening agent and the balance of water; the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in parts by weight: 19 parts of emulsion, 11 parts of nano-silicon solution, 0.1 part of pH regulator, 0.2 part of wetting agent, 0.5 part of dispersant, 0.2 part of antiseptic bactericide, 0.65 part of film-forming assistant, 0.2 part of defoamer, 0.25 part of silane coupling agent, 0.2 part of compatible stabilizer, 20 parts of titanium dioxide, 4 parts of talcum powder, 13 parts of ceramic fiber powder, 8 parts of heavy calcium powder, 0.4 part of thickener and the balance of water, wherein the preparation method comprises the following steps: (1) mixing base materials: the emulsion and the nano-silicon solution in the proportion are put into a mechanical stirrer to be stirred and mixed for a certain time, in the step (1), when the emulsion and the nano-silicon solution are mixed, the rotating speed of the mechanical stirrer is 500r/min, the time is 30min, the particle size of the nano-silicon solution is preferably 10-20nm, the smaller the particle size distribution is, the more stable the system is, in addition, when the nano-silicon solution matched with the emulsion is selected, the nano-silicon solution with high clarity and transparency is generally selected, the particle size distribution is small, the impurity content is low, the system stability is facilitated, the emulsion in the coating adopts environment-friendly silicone-acrylate emulsion with ultralow VOC (volatile organic compound) content, the Tg is higher, the nano-silicon solution is stable to calcium and magnesium ions, the compatibility with the silicon solution is good, the film forming property and the coating property can be provided for the coating, and various physical and chemical properties required by coating can be met, when the amount of the silica sol is high, the coating layer of the solid particles is thickened by the silica particles, so that defects among the particles and between the particles and a base layer are increased, the adhesive force is reduced, the cost of the coating is increased, and the ratio of the silica sol to the silicone-acrylate emulsion is preferably 1.75: 1;
(2) adjusting the pH value: after the base materials are mixed, putting a pH regulator into a stirrer to regulate the pH value of the mixed solution, wherein in the step (2), the pH regulator adopts hydrochloric acid with the concentration of 0.1mol/L, the pH value is regulated to 3-4, in the step (2), the rotating speed of the mechanical stirrer is regulated to 200r/min when the pH value is regulated, and after the pH value is regulated, the rotating speed of the mechanical stirrer is recovered to 500r/min for 5 min;
(3) and (3) mixing of fillers: putting the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder into another mechanical stirrer for stirring, and fully mixing the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder to prepare a mixed filler;
(4) preparing the coating: adding the mixed filler, the wetting agent, the dispersing agent, the anticorrosive bactericide, the film-forming assistant, the silane coupling agent, the compatible stabilizer and water into the mechanical stirrer in the step one in sequence, and continuously stirring for a certain time;
(5) defoaming: and reducing the rotating speed of the mechanical stirrer, adding a part of defoaming agent into the mechanical stirrer, stirring for a certain time, reducing the rotating speed of the stirrer step by step, adding the rest defoaming agent into the stirrer, and stirring at a low speed for a certain time by the stirrer to obtain a coating finished product.
Example two:
the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in percentage by mass: 15-20% of emulsion, 10-15% of nano-silicon solution, 0.05-0.15% of pH regulator, 0.1-0.3% of wetting agent, 0.3-0.7% of dispersing agent, 0.2-0.3% of antiseptic bactericide, 0.5-1.0% of film-forming additive, 0.1-0.4% of defoaming agent, 0.1-0.35% of silane coupling agent, 0.15-0.3% of compatible stabilizer, 15-25% of titanium pigment, 3-6% of talcum powder, 10-20% of ceramic fiber powder, 5-15% of heavy calcium powder, 0.2-0.6% of thickening agent and the balance of water; the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in parts by weight: 19 parts of emulsion, 11 parts of nano-silicon solution, 0.1 part of pH regulator, 0.2 part of wetting agent, 0.5 part of dispersant, 0.2 part of antiseptic bactericide, 0.65 part of film-forming assistant, 0.2 part of defoamer, 0.25 part of silane coupling agent, 0.2 part of compatible stabilizer, 20 parts of titanium dioxide, 4 parts of talcum powder, 13 parts of ceramic fiber powder, 8 parts of heavy calcium powder, 0.4 part of thickener and the balance of water, wherein the preparation method comprises the following steps: (1) mixing base materials: the emulsion and the nano-silicon solution in the proportion are put into a mechanical stirrer to be stirred and mixed for a certain time, in the step (1), when the emulsion and the nano-silicon solution are mixed, the rotating speed of the mechanical stirrer is 500r/min, the time is 30min, the particle size of the nano-silicon solution is preferably 10-20nm, the smaller the particle size distribution is, the more stable the system is, in addition, when the nano-silicon solution matched with the emulsion is selected, the nano-silicon solution with high clarity and transparency is generally selected, the particle size distribution is small, the impurity content is low, the system stability is facilitated, the emulsion in the coating adopts environment-friendly silicone-acrylate emulsion with ultralow VOC (volatile organic compound) content, the Tg is higher, the nano-silicon solution is stable to calcium and magnesium ions, the compatibility with the silicon solution is good, the film forming property and the coating property can be provided for the coating, and various physical and chemical properties required by coating can be met, when the amount of the silica sol is high, the coating layer of the solid particles is thickened by the silica particles, so that defects among the particles and between the particles and a base layer are increased, the adhesive force is reduced, the cost of the coating is increased, and the ratio of the silica sol to the silicone-acrylate emulsion is preferably 1.75: 1;
(2) adjusting the pH value: after the base materials are mixed, putting a pH regulator into a stirrer to regulate the pH value of the mixed solution, wherein in the step (2), the pH regulator adopts hydrochloric acid with the concentration of 0.1mol/L, the pH value is regulated to 3-4, in the step (2), the rotating speed of the mechanical stirrer is regulated to 200r/min when the pH value is regulated, and after the pH value is regulated, the rotating speed of the mechanical stirrer is recovered to 500r/min for 5 min;
(3) and (3) mixing of fillers: putting the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder into another mechanical stirrer for stirring, fully mixing the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder to prepare a mixed filler, wherein in the step (3), the rotating speed of the mechanical stirrer is 800r/min, the duration is 30min, and the filler plays a role in extinction in the latex paint; the fluidity and the workability of the latex paint can be improved; the covering power of the latex paint is improved, and the suspension property and the sagging resistance of the pigment are improved; the cost of the latex paint is reduced, and the filler contains ceramic fibers, so that the high temperature resistance, the heat preservation and insulation performance and the high temperature insulation performance of the whole paint are improved, and the paint has the characteristics of small hot melting and no toxicity;
(4) preparing the coating: sequentially adding the mixed filler, the wetting agent, the dispersing agent, the anticorrosive bactericide, the film-forming assistant, the silane coupling agent, the compatible stabilizer and water into the mechanical stirrer in the step one, continuously stirring for a certain time, wherein in the step (4), the rotating speed of the mechanical stirrer is 1800r/min, and the duration is 3 hours, and the coupling agent is added, so that the adhesive force of a coating film is greatly improved; when the dosage of the coupling agent is 0.25%, the adhesive force of the coating film is best; the performances such as gel amount, storage stability, coating film transparency and the like are reduced along with the increase of the using amount of the coupling agent, and the using amount of the coupling agent is preferably 0.25 percent from the aspects of saving cost and improving the performances;
(5) defoaming: and reducing the rotating speed of the mechanical stirrer, adding a part of defoaming agent into the mechanical stirrer, stirring for a certain time, reducing the rotating speed of the stirrer step by step, adding the rest defoaming agent into the stirrer, and stirring at a low speed for a certain time by the stirrer to obtain a coating finished product.
Example three:
the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in percentage by mass: 15-20% of emulsion, 10-15% of nano-silicon solution, 0.05-0.15% of pH regulator, 0.1-0.3% of wetting agent, 0.3-0.7% of dispersing agent, 0.2-0.3% of antiseptic bactericide, 0.5-1.0% of film-forming additive, 0.1-0.4% of defoaming agent, 0.1-0.35% of silane coupling agent, 0.15-0.3% of compatible stabilizer, 15-25% of titanium pigment, 3-6% of talcum powder, 10-20% of ceramic fiber powder, 5-15% of heavy calcium powder, 0.2-0.6% of thickening agent and the balance of water; the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in parts by weight: 19 parts of emulsion, 11 parts of nano-silicon solution, 0.1 part of pH regulator, 0.2 part of wetting agent, 0.5 part of dispersant, 0.2 part of antiseptic bactericide, 0.65 part of film-forming assistant, 0.2 part of defoamer, 0.25 part of silane coupling agent, 0.2 part of compatible stabilizer, 20 parts of titanium dioxide, 4 parts of talcum powder, 13 parts of ceramic fiber powder, 8 parts of heavy calcium powder, 0.4 part of thickener and the balance of water, wherein the preparation method comprises the following steps: (1) mixing base materials: the emulsion and the nano-silicon solution in the proportion are put into a mechanical stirrer to be stirred and mixed for a certain time, in the step (1), when the emulsion and the nano-silicon solution are mixed, the rotating speed of the mechanical stirrer is 500r/min, the time is 30min, the particle size of the nano-silicon solution is preferably 10-20nm, the smaller the particle size distribution is, the more stable the system is, in addition, when the nano-silicon solution matched with the emulsion is selected, the nano-silicon solution with high clarity and transparency is generally selected, the particle size distribution is small, the impurity content is low, the system stability is facilitated, the emulsion in the coating adopts environment-friendly silicone-acrylate emulsion with ultralow VOC (volatile organic compound) content, the Tg is higher, the nano-silicon solution is stable to calcium and magnesium ions, the compatibility with the silicon solution is good, the film forming property and the coating property can be provided for the coating, and various physical and chemical properties required by coating can be met, when the amount of the silica sol is high, the coating layer of the solid particles is thickened by the silica particles, so that defects among the particles and between the particles and a base layer are increased, the adhesive force is reduced, the cost of the coating is increased, and the ratio of the silica sol to the silicone-acrylate emulsion is preferably 1.75: 1;
(2) adjusting the pH value: after the base materials are mixed, putting a pH regulator into a stirrer to regulate the pH value of the mixed solution, wherein in the step (2), the pH regulator adopts hydrochloric acid with the concentration of 0.1mol/L, the pH value is regulated to 3-4, in the step (2), the rotating speed of the mechanical stirrer is regulated to 200r/min when the pH value is regulated, and after the pH value is regulated, the rotating speed of the mechanical stirrer is recovered to 500r/min for 5 min;
(3) and (3) mixing of fillers: putting the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder into another mechanical stirrer for stirring, fully mixing the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder to prepare a mixed filler, wherein in the step (3), the rotating speed of the mechanical stirrer is 800r/min, the duration is 30min, and the filler plays a role in extinction in the latex paint; the fluidity and the workability of the latex paint can be improved; the covering power of the latex paint is improved, and the suspension property and the sagging resistance of the pigment are improved; the cost of the latex paint is reduced, and the filler contains ceramic fibers, so that the high temperature resistance, the heat preservation and insulation performance and the high temperature insulation performance of the whole paint are improved, and the paint has the characteristics of small hot melting and no toxicity;
(4) preparing the coating: sequentially adding the mixed filler, the wetting agent, the dispersing agent, the anticorrosive bactericide, the film-forming assistant, the silane coupling agent, the compatible stabilizer and water into the mechanical stirrer in the step one, continuously stirring for a certain time, wherein in the step (4), the rotating speed of the mechanical stirrer is 1800r/min, and the duration is 3 hours, and the coupling agent is added, so that the adhesive force of a coating film is greatly improved; when the dosage of the coupling agent is 0.25%, the adhesive force of the coating film is best; the performances such as gel amount, storage stability, coating film transparency and the like are reduced along with the increase of the using amount of the coupling agent, and the using amount of the coupling agent is preferably 0.25 percent from the aspects of saving cost and improving the performances;
(5) defoaming: reducing the rotating speed of a mechanical stirrer, firstly adding a part of defoaming agent and stirring for a certain time in the mechanical stirrer, then reducing the rotating speed of the stirrer step by step and adding the rest defoaming agent into the stirrer, and finally stirring the stirrer at a low speed for a certain time to obtain a coating finished product, wherein in the step (5), the rotating speed of the mechanical stirrer is 500r/min when the defoaming agent is added, and the rotating speed of the mechanical stirrer is reduced step by step at the speed of 100r/min when the rest defoaming agent is added, and the purpose of adding the defoaming agent is to eliminate the foaming in the coating in the dispersing process, thereby improving the overall quality of the coating.
Although embodiments of the present patent have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present patent, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An inorganic nano ceramic fiber heat-insulating flame-retardant coating is characterized in that: the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in percentage by mass: 15-20% of emulsion, 10-15% of nano-silicon solution, 0.05-0.15% of pH regulator, 0.1-0.3% of wetting agent, 0.3-0.7% of dispersing agent, 0.2-0.3% of antiseptic bactericide, 0.5-1.0% of film-forming additive, 0.1-0.4% of defoaming agent, 0.1-0.35% of silane coupling agent, 0.15-0.3% of compatible stabilizer, 15-25% of titanium pigment, 3-6% of talcum powder, 10-20% of ceramic fiber powder, 5-15% of heavy calcium powder, 0.2-0.6% of thickening agent and the balance of water.
2. The inorganic nano ceramic fiber heat-insulating flame-retardant coating as claimed in claim 1, wherein: the inorganic nano ceramic fiber heat-insulating flame-retardant coating comprises the following components in parts by weight: 19 parts of emulsion, 11 parts of nano-silicon solution, 0.1 part of pH regulator, 0.2 part of wetting agent, 0.5 part of dispersant, 0.2 part of antiseptic bactericide, 0.65 part of film-forming assistant, 0.2 part of defoamer, 0.25 part of silane coupling agent, 0.2 part of compatible stabilizer, 20 parts of titanium dioxide, 4 parts of talcum powder, 13 parts of ceramic fiber powder, 8 parts of heavy calcium powder, 0.4 part of thickener and the balance of water.
3. The preparation method of the inorganic nano ceramic fiber heat-insulating flame-retardant coating according to any one of claims 1 to 2, characterized in that: the preparation method comprises the following steps:
(1) mixing base materials: putting the emulsion and the nano-silicon solution in the proportion into a mechanical stirrer for stirring and mixing, and continuing for a certain time;
(2) adjusting the pH value: after the base materials are mixed, putting the pH regulator into the stirrer for regulating the pH value of the mixed solution;
(3) and (3) mixing of fillers: putting the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder into another mechanical stirrer for stirring, and fully mixing the talcum powder, the titanium dioxide, the ceramic fiber powder and the coarse whiting powder to prepare a mixed filler;
(4) preparing the coating: adding the mixed filler, the wetting agent, the dispersing agent, the anticorrosive bactericide, the film-forming assistant, the silane coupling agent, the compatible stabilizer and water into the mechanical stirrer in the step one in sequence, and continuously stirring for a certain time;
(5) defoaming: and reducing the rotating speed of the mechanical stirrer, adding a part of defoaming agent into the mechanical stirrer, stirring for a certain time, reducing the rotating speed of the stirrer step by step, adding the rest defoaming agent into the stirrer, and stirring at a low speed for a certain time by the stirrer to obtain a coating finished product.
4. The preparation method of the inorganic nano ceramic fiber heat-insulating flame-retardant coating according to claim 3, characterized in that: in the step (1), when the emulsion and the nano-silicon solution are mixed, the rotating speed of a mechanical stirrer is 500r/min, and the duration time is 30 min.
5. The preparation method of the inorganic nano ceramic fiber heat-insulating flame-retardant coating according to claim 3, characterized in that: in the step (2), hydrochloric acid with the concentration of 0.1mol/L is adopted as a pH regulator, and the pH value is regulated to 3-4.
6. The preparation method of the inorganic nano ceramic fiber heat-insulating flame-retardant coating according to claim 3, characterized in that: in the step (2), the rotating speed of the mechanical stirrer is adjusted to 200r/min when the pH value is adjusted, and the rotating speed of the mechanical stirrer is restored to 500r/min after the pH value is adjusted, and the duration time is 5 min.
7. The preparation method of the inorganic nano ceramic fiber heat-insulating flame-retardant coating according to claim 3, characterized in that: in the step (3), the rotating speed of the mechanical stirrer is 800r/min, and the duration time is 30 min.
8. The preparation method of the inorganic nano ceramic fiber heat-insulating flame-retardant coating according to claim 3, characterized in that: in the step (4), the rotating speed of the mechanical stirrer is 1800r/min, and the duration time is 3 h.
9. The preparation method of the inorganic nano ceramic fiber heat-insulating flame-retardant coating according to claim 3, characterized in that: in the step (5), the rotating speed of the mechanical stirrer is 500r/min when the defoaming agent is added, and the rotating speed of the mechanical stirrer is gradually reduced at the speed of 100r/min when the residual defoaming agent is added.
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| CN115572138A (en) * | 2022-10-09 | 2023-01-06 | 重庆科博伦科技有限公司 | Environment-friendly inorganic silicon coating and preparation method thereof |
| CN115785701A (en) * | 2022-11-24 | 2023-03-14 | 广州晟巨涂料有限公司 | Special nano high-temperature anti-oxidation coating for electrolytic aluminum anode carbon and preparation method thereof |
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