CN116333533A - Hollow silicon sphere ceramic liquid heat-insulating paint and preparation method thereof - Google Patents
Hollow silicon sphere ceramic liquid heat-insulating paint and preparation method thereof Download PDFInfo
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- CN116333533A CN116333533A CN202310266956.5A CN202310266956A CN116333533A CN 116333533 A CN116333533 A CN 116333533A CN 202310266956 A CN202310266956 A CN 202310266956A CN 116333533 A CN116333533 A CN 116333533A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
- C09D123/28—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C09D123/286—Chlorinated polyethylene
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
- C09D5/185—Intumescent paints
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C08K2003/322—Ammonium phosphate
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Abstract
The invention relates to the technical field of paint, in particular to a hollow silicon sphere ceramic liquid heat-insulating paint and a preparation method thereof. The invention takes graded hollow silicon spheres with different grading diameters and mixing proportions as a filler, and is blended with liquid polymers obtained by basic raw materials such as high chlorinated polyethylene, acrylic resin, ammonium polyphosphate, melamine and the like, and the invention has good high temperature resistance, flame retardance and heat preservation.
Description
Technical Field
The invention relates to the technical field of paint, in particular to a hollow silicon ball ceramic liquid heat-insulating paint and a preparation method thereof.
Background
The paint is used as one of important elements in building materials, and is especially important in developing novel heat insulation paint. The organic material and the inorganic material have advantages and disadvantages, and the mode of combining the organic and inorganic heat-insulating materials into a composite material for use is bound to be a future development direction. Namely, the combination of good heat preservation efficiency of the organic heat preservation material and good stability and nonflammability of the inorganic heat preservation material, and the manufacture of the heat preservation material with good heat preservation efficiency and nonflammability is an important direction for researching the optimization of the heat preservation material in the future. At present, a heat-insulating coating obtained by combining an organic material and an inorganic material has not been reported yet.
The main physicochemical factors influencing the high temperature resistance of the paint are as follows: carbonaceous layer thickness, structure, thermal conductivity, chemical composition, and possibly stability under high temperature impact, i.e., carbonaceous layer strength, etc. The ideal carbonaceous layer structure is uniform and fine in pore diameter, complete in structure, certain in thickness, good in adhesive force, high in strength and low in heat conductivity coefficient, so that the quality of the carbonaceous layer is a main factor for solving the high temperature resistance of the coating. The factors influencing the quality of the coating carbonaceous layer, besides the matrix resin, also comprise an expansion foaming system, namely a flame retardant additive, a pigment filler and an auxiliary agent, wherein the influence of the flame retardant additive is the greatest. Thus, suitable flame retardant additives are one of the main directions of research.
Disclosure of Invention
The invention provides a hollow silicon ball ceramic liquid heat-insulating paint and a preparation method thereof, which overcome the defects of the prior art and have good high temperature resistance, flame retardance and heat preservation.
One of the technical schemes of the invention is realized by the following measures: the hollow silicon sphere ceramic liquid heat preservation coating comprises, by weight, 24 parts of high chlorinated polyethylene, 8 parts of acrylic resin, 1 to 3 parts of organic silicon resin, 18 to 22 parts of ammonium polyphosphate, 8 to 12 parts of melamine, 8 to 12 parts of pentaerythritol, 2 to 4 parts of chlorinated paraffin, 2 to 4 parts of graphite, 2 to 3 parts of antimony trioxide, 4 to 6 parts of nano composite ferrotitanium powder, 0.4 to 0.6 part of titanate coupling agent, 2 to 3 parts of graded hollow silicon spheres, 0.5 to 1.5 parts of auxiliary agent and 8 to 9 parts of solvent.
The following are further optimizations and/or improvements to one of the above-described inventive solutions:
the hollow silicon sphere ceramic liquid heat-insulating paint is prepared by the following steps:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin;
and fourthly, uniformly mixing the ground and sieved polymer matrix resin with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating.
The grading hollow silicon spheres are formed by mixing 50 to 60 parts by weight of JN25 particle size hollow silicon spheres, 20 to 30 parts by weight of JN30 particle size hollow silicon spheres and 15 to 25 parts by weight of JN40 particle size hollow silicon spheres.
The solvent is formed by mixing 200# solvent oil and butyl acetate in a mass ratio of 1:1.
The auxiliary agent is formed by mixing an antifoaming agent and an anti-settling agent in a mass ratio of 1:1, wherein the antifoaming agent is polydimethylsiloxane, and the anti-settling agent is polyamide wax.
The fineness of the above-mentioned sieved polymer matrix resin is 40 μm to 80. Mu.m.
In the third step, when stirring and dispersing at high speed, the stirring speed is 120r/min to 150r/min, and the stirring time is 15min to 20min.
The second technical scheme of the invention is realized by the following measures: the preparation method of the hollow silicon sphere ceramic liquid heat-insulating paint comprises the following steps:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin;
and fourthly, uniformly mixing the ground and sieved polymer matrix resin with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating.
The following is a further optimization and/or improvement of the second technical scheme of the invention:
the grading hollow silicon spheres are formed by mixing 50 to 60 parts by weight of JN25 particle size hollow silicon spheres, 20 to 30 parts by weight of JN30 particle size hollow silicon spheres and 15 to 25 parts by weight of JN40 particle size hollow silicon spheres.
The solvent is formed by mixing 200# solvent oil and butyl acetate in a mass ratio of 1:1.
The auxiliary agent is formed by mixing an antifoaming agent and an anti-settling agent in a mass ratio of 1:1, wherein the antifoaming agent is polydimethylsiloxane, and the anti-settling agent is polyamide wax.
The fineness of the above-mentioned sieved polymer matrix resin is 40 μm to 80. Mu.m.
The invention takes graded hollow silicon spheres with different grading diameters and mixing proportions as a filler, and is blended with liquid polymers obtained by basic raw materials such as high chlorinated polyethylene, acrylic resin, ammonium polyphosphate, melamine and the like, and the invention has good high temperature resistance, flame retardance and heat preservation.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention. The various chemical reagents and chemicals mentioned in the present invention are all commonly known in the art unless specifically stated otherwise.
The invention is further described below with reference to examples:
example 1: the hollow silicon sphere ceramic liquid heat preservation coating comprises, by weight, 24 parts of high chlorinated polyethylene, 8 parts of acrylic resin, 1 to 3 parts of organic silicon resin, 18 to 22 parts of ammonium polyphosphate, 8 to 12 parts of melamine, 8 to 12 parts of pentaerythritol, 2 to 4 parts of chlorinated paraffin, 2 to 4 parts of graphite, 2 to 3 parts of antimony trioxide, 4 to 6 parts of nano composite ferrotitanium powder, 0.4 to 0.6 part of titanate coupling agent, 2 to 3 parts of graded hollow silicon spheres, 0.5 to 1.5 parts of auxiliary agent and 8 to 9 parts of solvent.
In the invention, the raw materials of ammonium polyphosphate (catalyst), pentaerythritol (carbonizer), melamine (foaming agent), chlorinated paraffin (with foaming agent, plasticizer and carbon forming agent) and graphite (carbon forming agent) form a main expansion foaming system of the heat insulation coating. Wherein, the liquid crystal display device comprises a liquid crystal display device,
(1) The advantage of ammonium polyphosphate is that it decomposes at around 290 ℃ and releases NH 3 And phosphoric acid, which dehydrates and carbonizes hydroxyl groups on pentaerythritol to form a compact and incombustible three-dimensional structure carbonaceous layer;
(2) Pentaerythritol has the advantages that the pentaerythritol is a skeleton foundation for forming a flame-retardant foam carbonaceous layer with a three-dimensional space structure, the carbon content of the pentaerythritol is 44%, the hydroxyl content of the pentaerythritol is 50%, and the hydroxyl content of the pentaerythritol is a key technical parameter for influencing the quality of the coating carbonaceous layer;
(3) The advantage of melamine and chlorinated paraffins is that melamine decomposes on heating to produce non-flammable gases, such as N 2 、CO 2 、NH 3 、HCL、H 2 O, etc. to make the coating foam and expand to form spongy carbonized layer to reach heat insulating and fire retarding effect. In order to further improve the quality of the carbonized layer, chlorinated paraffin and melamine are spliced to generate gradient multi-level carbonization. In a high-temperature experiment, when the temperature of the coating reaches about 220 ℃, the base material component begins to soften, chlorinated paraffin begins to decompose at about 210 ℃ and releases NH3 and HCL gas, so that the softened coating begins to foam, and meanwhile, the HCL gas has a flame retardant effect, and after the chlorinated paraffin is separated from the HCL, a carbon chain is formed as a carbon frame foundation;
(4) The graphite has the advantages that when the graphite is subjected to high temperature of more than 200 ℃, the compound of which the interlayer compound is occluded in the interlayer lattice absorbs a large amount of heat to be rapidly decomposed, gasified and expanded, and finally the graphite expands 150-200 times along the interlayer, so that the graphite becomes a framework of an expansion system, and the carbon residue of the coating and the activation energy in the thermal degradation process are improved. Graphite is a synergistic agent of a P-N-C chemical expansion foaming flame retardant system. The addition amount is most suitably controlled to 2% to 4%.
In the invention, the raw material antimony trioxide (flame retardant) has the advantage that the antimony trioxide can play a role in synergistic flame retardance with chlorine-containing resins. When the coating is heated to high temperature, the high chlorinated polyethylene and chlorinated paraffin are decomposed into HCL, HCL and Sb by heating 2 O 3 The chemical reaction is carried out to generate antimony oxychloride, and the antimony oxychloride is further decomposed into antimony trichloride (SbCL 3 ) Direct sublimation, and simultaneously absorbs a large amount of heat to cool down the coating, sbCL 3 The coating surface is covered with the flame retardant effect. In addition, when the coating is on fire, antimony trichloride can enter a gas-phase combustion zone to react with free radicals in a non-combustion stage to produce RCL (chlorinated hydrocarbon), HCL and Sb, and the intermediate products and the non-combustion gas dilute the oxygen concentration to generate a gas shielding effect, so that the oxygen is difficult to support combustion, thereby playing a role in flame retardance, and test results prove that the proper addition amount of the antimony trioxide is 2-3%;
in the invention, the hollow silicon spheres (carbonization layer reinforcing agent) graded by raw materials have the advantages of blocking effect on heat energy due to low hollow closed pore structure and density, and the shell of the hollow silicon spheres is smooth glass, so that the hollow silicon spheres have strong diffuse reflection effect on light and heat. Through proper grading proportion, the micro-porosity of the coating can be improved, and the effects of reflecting, cooling and insulating light and heat are achieved. The proper addition amount of the graded hollow silicon spheres is 2 to 3 percent;
in the invention, the raw material nano composite ferrotitanium powder (rust-proof pigment) has the advantages of being an active rust-proof pigment which has certain rust-proof capability. The phosphate radical in the phosphate can react with iron atoms on the surface of steel to generate ferric phosphate complex salt, and the ferric phosphate complex salt is firmly attached to the surface of steel to play a role in passivation and corrosion inhibition, and the ferric phosphate complex salt isolates water, oxygen, chloride ions and the like to play a role in chemical corrosion prevention. The test result proves that the addition amount of the nano ferrotitanium powder is about 5 percent.
In the invention, the action mechanism of the raw material phthalate ester coupling agent is as follows: coating on the surface of inorganic pigment and filler in single molecule state to replace trace water and gas adsorbed originally, and simultaneously passing through long carbon chain hydrophobic non-hydrolytic group of phthalate ester molecule (coupling agent general formula-C) 3 H 7 OTX 3 The X group) of the pigment and the filler increases the compatibility with the organic polymer base material and reduces the free energy of an interface, thereby being beneficial to wetting and dispersing the pigment and the filler, being beneficial to forming bubble cores during expansion and foaming and improving the quality of a carbonaceous layer. The coordination type titanate adds 2 phosphite esters as ligands on the tetraalkoxy titanium, can generate phosphorus-containing compounds while improving hydrolysis, thereby improving the flame retardance, high temperature resistance and rust resistance of the coating, and the proper dosage is about 0.5 percent.
In the invention, the auxiliary agent is a defoaming agent and an anti-settling agent so as to improve the decorative property, stability and construction performance of the coating.
Example 2: as the optimization of the embodiment, the hollow silicon sphere ceramic liquid heat-insulating paint is obtained by the following method:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin;
and fourthly, uniformly mixing the ground and sieved polymer matrix resin with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating.
Example 3: as an optimization of the above embodiment, the graded hollow silicon spheres were mixed from 50 parts to 60 parts of JN25 particle size hollow silicon spheres, 20 parts to 30 parts of JN30 particle size hollow silicon spheres, and 15 parts to 25 parts of JN40 particle size hollow silicon spheres by weight.
Example 4: as optimization of the embodiment, the solvent is formed by mixing 200# solvent oil and butyl acetate in a mass ratio of 1:1.
Example 5: as optimization of the embodiment, the auxiliary agent is formed by mixing an antifoaming agent and an anti-settling agent in a mass ratio of 1:1, wherein the antifoaming agent is polydimethylsiloxane, and the anti-settling agent is polyamide wax.
Example 6: as an optimization of the above examples, the fineness of the polymer matrix resin after sieving was 40 μm to 80 μm.
Example 7: as the optimization of the embodiment, in the third step, the stirring speed is 120r/min to 150r/min and the stirring time is 15min to 20min when the high-speed stirring and dispersing are performed.
Example 8:
the hollow silicon sphere ceramic liquid heat-insulating paint comprises, by weight, 24 parts of high chlorinated polyethylene, 8 parts of acrylic resin, 1 part of organic silicon resin, 18 parts of ammonium polyphosphate, 8 parts of melamine, 8 parts of pentaerythritol, 2 parts of chlorinated paraffin, 2 parts of graphite, 2 parts of antimony trioxide, 4 parts of nano composite ferrotitanium powder, 0.4 part of titanate coupling agent, 2 parts of graded hollow silicon spheres, 0.5 part of auxiliary agent (1:1 polydimethylsiloxane and polyamide wax) and 8 parts of solvent (1:1 No. 200 solvent oil and butyl acetate), and is prepared by the following steps:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin; wherein, when stirring and dispersing at high speed, the stirring rotating speed is 120r/min, and the stirring time is 15min;
fourthly, uniformly mixing the polymer matrix resin with the fineness of 40 mu m after grinding and sieving with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating;
the grading hollow silicon spheres are formed by mixing 60 parts of JN25 particle size hollow silicon spheres, 25 parts of JN30 particle size hollow silicon spheres and 15 parts of JN40 particle size hollow silicon spheres.
Example 9:
the hollow silicon sphere ceramic liquid heat-insulating paint comprises, by weight, 24 parts of high chlorinated polyethylene, 8 parts of acrylic resin, 3 parts of organic silicon resin, 22 parts of ammonium polyphosphate, 12 parts of melamine, 12 parts of pentaerythritol, 4 parts of chlorinated paraffin, 4 parts of graphite, 3 parts of antimony trioxide, 6 parts of nano composite iron titanium powder, 0.6 part of titanate coupling agent, 3 parts of graded hollow silicon spheres, 1.5 parts of auxiliary (1:1 polydimethylsiloxane and polyamide wax) and 9 parts of solvent (1:1 No. 200 solvent oil and butyl acetate), and is prepared by the following steps:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin; wherein, when stirring and dispersing at high speed, the stirring rotating speed is 150r/min, and the stirring time is 20min;
fourthly, uniformly mixing the polymer matrix resin with the fineness of 80 mu m after grinding and sieving with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating;
the grading hollow silicon spheres are formed by mixing 55 parts of JN25 particle size hollow silicon spheres, 20 parts of JN30 particle size hollow silicon spheres and 25 parts of JN40 particle size hollow silicon spheres.
Example 10:
the hollow silicon sphere ceramic liquid heat-insulating coating comprises, by weight, 24 parts of high chlorinated polyethylene, 8 parts of acrylic resin, 2 parts of organic silicon resin, 20 parts of ammonium polyphosphate, 10 parts of melamine, 10 parts of pentaerythritol, 3 parts of chlorinated paraffin, 3 parts of graphite, 2 parts of antimony trioxide, 5 parts of nano composite iron titanium powder, 0.5 part of titanate coupling agent, 3 parts of graded hollow silicon spheres, 1 part of auxiliary (1:1 polydimethylsiloxane and polyamide wax) and 8.5 parts of solvent (1:1 200# solvent oil and butyl acetate), and is prepared by the following steps:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin; wherein, when stirring and dispersing at high speed, the stirring rotating speed is 150r/min, and the stirring time is 20min;
fourthly, uniformly mixing the ground and sieved polymer matrix resin with the fineness of 60 mu m with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating;
the grading hollow silicon spheres are formed by mixing 50 parts of JN25 particle size hollow silicon spheres, 30 parts of JN30 particle size hollow silicon spheres and 20 parts of JN40 particle size hollow silicon spheres.
Comparative example 1: the difference from example 10 is that "24 parts of highly chlorinated polyethylene, 8 parts of acrylic resin" is changed to "8 parts of highly chlorinated polyethylene, 8 parts of acrylic resin", that is, the weight ratio of highly chlorinated polyethylene and acrylic resin is changed to 3:1 to 1:1 and acrylic resin, the rest steps are the same.
Comparative example 2: the difference from example 10 is that "24 parts of highly chlorinated polyethylene, 8 parts of acrylic resin" are changed to "16 parts of highly chlorinated polyethylene, 8 parts of acrylic resin", that is, the weight ratio of highly chlorinated polyethylene to acrylic resin of 3:1 is changed to the weight ratio of highly chlorinated polyethylene to acrylic resin of 2:1, and the rest steps are the same.
Comparative example 3: the difference from example 10 is that "24 parts of highly chlorinated polyethylene, 8 parts of acrylic resin" is changed to "32 parts of highly chlorinated polyethylene, 8 parts of acrylic resin", that is, the weight ratio of highly chlorinated polyethylene to acrylic resin of 3:1 is changed to the weight ratio of highly chlorinated polyethylene to acrylic resin of 4:1, and the rest steps are the same.
Comparative example 4: the difference from example 10 is the absence of ammonium polyphosphate as starting material and the rest of the procedure is identical.
Comparative example 5: the difference from example 10 is the lack of pentaerythritol as starting material and the remaining steps are identical.
Example 11: the hollow silicon sphere ceramic liquid heat-insulating coatings prepared in examples 8 to 10 and comparative examples 1 to 5 of the present invention were subjected to performance tests, and the test items include heat conductivity, flushing resistance, low temperature stability, combustion performance, drying time, water permeability, in-container state and workability. As shown in Table 1, it can be seen from Table 1 that the hollow silicon sphere ceramic liquid heat-insulating coatings prepared in comparative examples 1 to 3 and 10 according to the present invention have high heat conductivity and combustion performance (monomer combustion, total heat release amount of 600s, MJ), which means that the heat-insulating property, high temperature resistance and flame retardance are poor, and that the weight ratio of raw material high chlorinated polyethylene to acrylic resin is 3:1, and the hollow silicon sphere ceramic liquid heat-insulating coating of the present invention has the best performance.
As can be seen from comparative examples 4 to 5 and 10 of the present invention, the absence of ammonium polyphosphate or pentaerythritol as raw materials in the preparation process of the hollow silicon sphere ceramic liquid heat-insulating coating material of the present invention also has high heat conductivity and combustion performance, which indicates that the raw materials of highly chlorinated polyethylene and acrylic resin have a positive effect on the performance of the hollow silicon sphere ceramic liquid heat-insulating coating material.
As can be seen from comparative examples 1 to 5 and examples 8 to 10 of the present invention, the hollow silicon sphere ceramic liquid heat-insulating coatings prepared in examples 8 to 10 of the present invention are excellent in physicochemical properties, on the one hand, low in heat conductivity, indicating good heat insulation, and on the other hand, low in combustion performance, indicating good in high temperature resistance, flame retardance, and in carbonization layer yield, quality and smoke generation.
In a word, the invention takes graded hollow silicon spheres with different grading diameters and mixing proportions as a filler, and is blended with liquid polymers obtained by basic raw materials such as high chlorinated polyethylene, acrylic resin, ammonium polyphosphate, melamine and the like, and the invention has good high temperature resistance, flame retardance and heat preservation.
The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (9)
1. The hollow silicon sphere ceramic liquid heat-insulating paint is characterized by comprising, by weight, 24 parts of high chlorinated polyethylene, 8 parts of acrylic resin, 1 to 3 parts of organic silicon resin, 18 to 22 parts of ammonium polyphosphate, 8 to 12 parts of melamine, 8 to 12 parts of pentaerythritol, 2 to 4 parts of chlorinated paraffin, 2 to 4 parts of graphite, 2 to 3 parts of antimony trioxide, 4 to 6 parts of nano composite ferrotitanium powder, 0.4 to 0.6 part of titanate coupling agent, 2 to 3 parts of graded hollow silicon spheres, 0.5 to 1.5 parts of auxiliary agent and 8 to 9 parts of solvent.
2. The hollow silicon sphere ceramic liquid heat preservation coating according to claim 1, which is characterized by being prepared by the following steps:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin;
and fourthly, uniformly mixing the ground and sieved polymer matrix resin with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating.
3. The hollow silicon sphere ceramic liquid heat preservation coating according to claim 1 or 2, characterized in that the graded hollow silicon spheres are formed by mixing 50 to 60 parts by weight of JN25 particle size hollow silicon spheres, 20 to 30 parts by weight of JN30 particle size hollow silicon spheres and 15 to 25 parts by weight of JN40 particle size hollow silicon spheres.
4. The hollow silicon sphere ceramic liquid heat-insulating coating according to claim 1, 2 or 3, wherein the solvent is formed by mixing 200# solvent oil and butyl acetate in a mass ratio of 1:1.
5. The hollow silicon sphere ceramic liquid heat preservation coating according to any one of claims 1 to 4, wherein the auxiliary agent is formed by mixing an antifoaming agent and an anti-settling agent in a mass ratio of 1:1.
6. The liquid heat insulating hollow silica sphere ceramic paint according to claim 5, wherein the defoaming agent is polydimethylsiloxane and the anti-settling agent is polyamide wax.
7. Hollow silicon sphere ceramic liquid thermal insulation coating according to any of claims 1 to 6, characterized in that the fineness of the polymer matrix resin after sieving is 40 to 80 μm.
8. The liquid heat-insulating hollow silicon sphere ceramic coating according to any one of claims 1 to 7, wherein in the third step, the stirring speed is 120 to 150r/min and the stirring time is 15 to 20min when stirring and dispersing at high speed.
9. The method for preparing the hollow silicon sphere ceramic liquid heat preservation coating according to any one of claims 1, 3 to 8, characterized by comprising the following steps:
firstly, adding high chlorinated polyethylene into a solvent with a required amount to dissolve, and obtaining a high chlorinated polyethylene resin solution; adding acrylic resin into the required amount of organic silicon resin, and uniformly mixing to obtain silicon modified acrylic resin;
secondly, adding silicon modified acrylic resin into the high chlorinated polyethylene resin solution, and uniformly mixing to obtain a matrix resin solution;
thirdly, adding a required amount of titanate coupling agent into the matrix resin solution, stirring until the titanate coupling agent is dissolved, and then sequentially adding a required amount of antimony trioxide, an auxiliary agent, ammonium polyphosphate, melamine, pentaerythritol, chlorinated paraffin, graphite and nano composite ferrotitanium powder, and uniformly dispersing at a high speed to obtain polymer matrix resin;
and fourthly, uniformly mixing the ground and sieved polymer matrix resin with the required amount of graded hollow silicon spheres to obtain the hollow silicon sphere ceramic liquid heat-insulating coating.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116875133A (en) * | 2023-08-10 | 2023-10-13 | 唐山科鸿新材料有限公司 | Diatomite-containing heat-insulating coating and preparation method thereof |
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| CN109504251A (en) * | 2018-11-23 | 2019-03-22 | 深圳市欧科力科技有限公司 | A kind of intumescent architectural fireproof paint and preparation method thereof |
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