CN105670434A - Preparation method of nano-pore SiO2 thermal insulation coating - Google Patents
Preparation method of nano-pore SiO2 thermal insulation coating Download PDFInfo
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Abstract
The invention discloses a preparation method of a nano-pore SiO2 thermal insulation coating, and relates to the technical field of construction thermal insulation materials. According to the invention, low-cost modified nano-pore SiO2 is adopted as a main functional filler, and is compounded with film-forming emulsion, hollow glass microsphere, fiber, a dispersing agent, a wetting agent, a coalescing agent, a pigment, deionized water, a defoaming agent and a thickening agent according to a certain ratio, such that the high-performance low-cost SiO2 thermal insulation coating is obtained. The invention has the following advantages: (1) the invention provides a low-cost preparation method of the nano-pore SiO2 thermal insulation coating; (2) the thermal insulation coating prepared with the method provided by the invention has excellent thermal insulation performance and long service life, and is flame-retardant and waterproof; and (3) the method provided by the invention has the advantages of simple reaction process, mild condition and short process, and is suitable for industrialized production.
Description
Technical field
The invention belongs to insulation material technical field for building, particularly to a kind of nano-pore SiO2The preparation method of heat insulating coatings.
Background technology
Nano-pore SiO2Heat-insulating heat-preserving material, owing to having the features such as three-dimensional nanoparticles structure, high-specific surface area, nanoscale hole, low-density, has become as the focus of heat insulating material. But the shortcomings such as its intensity is low, cost intensive limit its popularization and application. Therefore, research and development break through key Design and the manufacturing technology of a new generation's nano-pore insulation material, and realize the production of its low-coat scaleization, and High Performance Adiabatic material is generalized to civil area, have become as the trend of state's inside thermal conservation material development.
By nano-pore SiO2Material is one of major way realizing its practical application as heat insulating coatings, can brush on matrix during use, and easy construction, the suitability extensively, solve Conventional nano hole SiO2A difficult problem for material poor practicability. CN102604468A is by SiO excellent for heat-proof quality2Aerogel particle adds high-strength tenacity to, brushes in convenient emulsion paint, has prepared that heat-proof quality is good, fireproof high-temperature resistant, has not fired and the SiO of good toughness2Aerogel thermal insulation latex paint, reduces 50% relative to pure emulsion paint heat conductivity. Aerosil as major function filler, has been prepared that heat-proof quality is excellent, comprcssive strength is big, anticorrosive by CN103333542A, the novel heat-insulation coating of antioxidation and long service life. Above products application in external thermal insulation system, greatly reduce the cold and hot loss of building, improve the effect of energy-saving and emission-reduction. Although but above heat insulating coatings solves nano-pore SiO2Intensity is low, the problem of poor practicability, but its higher cost still limits application.
Therefore, a kind of low cost nano-pore SiO of exploitation2The preparation method of heat insulating coatings, develops for high-performance heat insulating coatings and promotes significant.
Summary of the invention
It is an object of the invention to provide a kind of low cost nano-pore SiO2The preparation method of heat insulating coatings, with low-cost modified nano-pore SiO2As major function filler, prepare that heat-proof quality is excellent, fire-retardant, the compound heat insulation coating of waterproof and long service life.
The technical scheme is that the silicon source used containing methyl and only improve the hydrophobicity of material with ethanol for solvent, by the intensity of the modified raising material of resorcinol, preparing the modified Nano hole SiO of low cost at normal temperatures and pressures2.With modified Nano hole SiO2As major function filler, and the compound in certain proportion such as filming emulsion, hollow glass micropearl, fiber, dispersant, wetting agent, coalescents, pigment, deionized water, defoamer, thickening agent, prepare the nano-pore SiO of high-performance and low-cost2Heat insulating coatings
Concrete preparation process is:
(1) nano-pore SiO2Preparation
By silicon source, phenols, aldehydes and dehydrated alcohol with certain mass ratio mixing, at room temperature stir 10 ~ 30min and make its Homogeneous phase mixing, above-mentioned solution is sealed and preserves, be incubated 12 ~ 72h at 20 ~ 80 DEG C and form gel. Then by the soak that obtains in ethanol, it is incubated 12 ~ 72h at 20 ~ 60 DEG C and removes the chemical substance of residual, then at 40 ~ 120 DEG C, obtain nano-pore SiO after dry 12 ~ 72h2. Wherein, the mass ratio of phenols, aldehydes, presoma silicon source and dehydrated alcohol is 1:0.1 ~ 5:0.1 ~ 10:1 ~ 100.
Described silicon source includes: tetraethoxysilane, tetramethoxy-silicane, multi-polysiloxane, MTMS, ethyl trimethoxy silane, MTES, 3 aminopropyl triethoxysilanes, one or more in 3 aminopropyl trimethoxysilane. Wherein preferred mass is than the mixing silicon source for the MTMS of 1:0.5 ~ 5 and 3 aminopropyl triethoxysilanes.
Described phenols includes: one or more in phenol, neck Benzodiazepines, resorcinol, hydroquinone, 3 amino-phenols, 4 amino-phenols, phloroglucinol. Wherein preferred resorcinol.
Described aldehydes includes: one or more in formaldehyde, acetaldehyde, furfural. Wherein preferred formaldehyde.
(2) nano-pore SiO2The preparation of heat insulating coatings
The deionized water of certain mass ratio, dispersant, wetting agent, defoamer, coalescents, pigment are pressed mix homogeneously, is subsequently adding the nano-pore SiO of certain mass ratio2, hollow glass micropearl, fiber mix homogeneously, then filming emulsion, defoamer are added and mix homogeneously, stirring at low speed also adds thickening agent and regulates viscosity, obtains nano-pore SiO2Heat insulating coatings. Wherein, filming emulsion, nano-pore SiO2, hollow glass micropearl, fiber, dispersant, wetting agent, coalescents, pigment, deionized water, defoamer, thickening agent mass ratio be 100:1 ~ 40:1 ~ 40:1 ~ 40:0.1 ~ 10:0.1 ~ 10:0.5 ~ 15:0 ~ 15:10 ~ 200:0.1 ~ 3:0.1 ~ 3.
Described filming emulsion includes: one or more in pure-acrylic emulsion, elastomeric propylene acid fat liquor, polyaminoester emulsion.
Described fiber includes: glass fibre, high silica fiber, one or more in ceramic fibre, polypropylene fibre, polyester fiber.
Described dispersant includes: one or more in sodium lauryl sulphate, dodecylbenzene sodium sulfonate, sodium aluminate, Polyethylene Glycol, polyvinyl alcohol.
Described coalescents includes: one or more in ethylene glycol, glycerol.
Described pigment includes: one or more in iron oxide red, barba hispanica, Resina garciniae, alizarin red, indigo-blue, titanium white, Griffith's zinc white., lead chromate yellow.
Described thickening agent includes: one or more in methylcellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose.
It is an advantage of the current invention that: 1) by by modified Nano hole SiO2As major function filler, it is provided that a kind of nano-pore SiO2The low cost preparation method of heat insulating coatings; 2) heat insulating coatings prepared by method provided by the invention, heat-proof quality is excellent, fire-retardant, waterproof and long service life.3) simple with method reaction process provided by the invention, mild condition, flow process are short, are suitable for industrialized production.
Accompanying drawing explanation
Fig. 1 is the flow chart of preparation method of the present invention
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is described further.
Case study on implementation 1
MTMS, 3 aminopropyl triethoxysilanes, resorcinol, formaldehyde and dehydrated alcohol are mixed with the mass ratio of 1:1:0.4:0.5:12, at room temperature stirring 20min Homogeneous phase mixing, above-mentioned solution is sealed and preserves, be incubated 24h at 40 DEG C and form gel. Then by the soak that obtains in ethanol, it is incubated 24h at 40 DEG C and removes the chemical substance of residual, then at 60 DEG C, obtain nano-pore SiO after dry 24h2。
The deionized water of certain mass ratio, dispersant, wetting agent, defoamer, coalescents, pigment are pressed mix homogeneously, is subsequently adding the nano-pore SiO of certain mass ratio2, hollow glass micropearl, fiber mix homogeneously, then filming emulsion, defoamer are added and mix homogeneously, stirring at low speed also adds thickening agent and regulates viscosity, obtains nano-pore SiO2Heat insulating coatings. Wherein, filming emulsion, nano-pore SiO2, hollow glass micropearl, fiber, dispersant, wetting agent, coalescents, deionized water, defoamer, thickening agent mass ratio be 100:5:25:5:1:0.5:2:50:0.3:0.3.
Case study on implementation 2
MTMS, 3 aminopropyl triethoxysilanes, resorcinol, formaldehyde and dehydrated alcohol are mixed with the mass ratio of 1:1:0.4:0.5:12, at room temperature stirring 20min Homogeneous phase mixing, above-mentioned solution is sealed and preserves, be incubated 24h at 40 DEG C and form gel. Then by the soak that obtains in ethanol, it is incubated 24h at 40 DEG C and removes the chemical substance of residual, then at 60 DEG C, obtain modified Nano hole SiO after dry 24h2。
The deionized water of certain mass ratio, dispersant, wetting agent, defoamer, coalescents, pigment are pressed mix homogeneously, is subsequently adding the nano-pore SiO of certain mass ratio2, hollow glass micropearl, fiber mix homogeneously, then filming emulsion, defoamer are added and mix homogeneously, stirring at low speed also adds thickening agent and regulates viscosity, obtains nano-pore SiO2Heat insulating coatings. Wherein, filming emulsion, nano-pore SiO2, hollow glass micropearl, fiber, dispersant, wetting agent, coalescents, pigment, deionized water, defoamer, thickening agent mass ratio be 100:10:15:5:1:2:1:2:80:0.3:0.3.
Case study on implementation 3
MTMS, 3 aminopropyl triethoxysilanes, resorcinol, formaldehyde and dehydrated alcohol are mixed with the mass ratio of 1:1:0.4:0.5:12, at room temperature stirring 20min Homogeneous phase mixing, above-mentioned solution is sealed and preserves, be incubated 24h at 40 DEG C and form gel. Then by the soak that obtains in ethanol, it is incubated 24h at 40 DEG C and removes the chemical substance of residual, then at 60 DEG C, obtain modified Nano hole SiO after dry 24h2。
The deionized water of certain mass ratio, dispersant, wetting agent, defoamer, coalescents, pigment are pressed mix homogeneously, is subsequently adding the nano-pore SiO of certain mass ratio2, hollow glass micropearl, fiber mix homogeneously, then filming emulsion, defoamer are added and mix homogeneously, stirring at low speed also adds thickening agent and regulates viscosity, obtains nano-pore SiO2Heat insulating coatings.Wherein, filming emulsion, nano-pore SiO2, hollow glass micropearl, fiber, dispersant, wetting agent, coalescents, pigment, deionized water, defoamer, thickening agent mass ratio be 100:10:5:15:1:2:1:2:80:0.3:0.3.
The above is only the preferred embodiment for the present invention; it should be pointed out that, the member of ordinary skill for the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (3)
1. a nano-pore SiO2The preparation method of heat insulating coatings, concrete preparation process is:
(1) nano-pore SiO2Preparation
By silicon source, phenols, aldehydes and dehydrated alcohol with certain mass ratio mixing, at room temperature stir 10 ~ 30min and make its Homogeneous phase mixing, above-mentioned solution is sealed and preserves, it is incubated 12 ~ 72h at 20 ~ 80 DEG C and forms gel, then by the soak that obtains in ethanol, it is incubated 12 ~ 72h at 20 ~ 60 DEG C and removes the chemical substance of residual, then at 40 ~ 120 DEG C, obtain nano-pore SiO after dry 12 ~ 72h2, wherein, the mass ratio of phenols, aldehydes, silicon source and dehydrated alcohol is 1:0.1 ~ 5:0.1 ~ 10:1 ~ 100;
(2) nano-pore SiO2The preparation of heat insulating coatings
The deionized water of certain mass ratio, dispersant, wetting agent, defoamer, coalescents, pigment are pressed mix homogeneously, is subsequently adding the nano-pore SiO of certain mass ratio2, hollow glass micropearl, fiber mix homogeneously, then filming emulsion, defoamer are added and mix homogeneously, stirring at low speed also adds thickening agent and regulates viscosity, obtains nano-pore SiO2Heat insulating coatings.
2. wherein, filming emulsion, nano-pore SiO2, hollow glass micropearl, fiber, dispersant, wetting agent, coalescents, pigment, deionized water, defoamer, thickening agent mass ratio be 100:1 ~ 40:1 ~ 40:1 ~ 40:0.1 ~ 10:0.1 ~ 10:0.5 ~ 15:0 ~ 15:10 ~ 200:0.1 ~ 3:0.1 ~ 3;
Preparation method according to claim 1, wherein, described silicon source includes: tetraethoxysilane, tetramethoxy-silicane, multi-polysiloxane, MTMS, ethyl trimethoxy silane, MTES, 3 aminopropyl triethoxysilanes, one or more in 3 aminopropyl trimethoxysilane, wherein preferred mass is than the mixing silicon source for the MTMS of 1:0.5 ~ 5 and 3 aminopropyl triethoxysilanes;
Described phenols includes: one or more in phenol, neck Benzodiazepines, resorcinol, hydroquinone, 3 amino-phenols, 4 amino-phenols, phloroglucinol, wherein preferred resorcinol;
Described aldehydes includes: one or more in formaldehyde, acetaldehyde, furfural, wherein preferred formaldehyde.
3. preparation method according to claim 1, wherein, described filming emulsion includes: one or more in pure-acrylic emulsion, elastomeric propylene acid fat liquor, polyaminoester emulsion; Described fiber includes: glass fibre, high silica fiber, one or more in ceramic fibre, polypropylene fibre, polyester fiber; Described dispersant includes: one or more in sodium lauryl sulphate, dodecylbenzene sodium sulfonate, sodium aluminate, Polyethylene Glycol, polyvinyl alcohol; Described coalescents includes: one or more in ethylene glycol, glycerol; Described pigment includes: one or more in iron oxide red, barba hispanica, Resina garciniae, alizarin red, indigo-blue, titanium white, Griffith's zinc white., lead chromate yellow;Described thickening agent includes: one or more in methylcellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose.
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| CN106433357A (en) * | 2016-09-29 | 2017-02-22 | 沈阳理工大学 | Industrial thermal insulation coating |
| CN107189596A (en) * | 2017-08-02 | 2017-09-22 | 合肥广民建材有限公司 | A kind of heat-preservation building paint containing nanoparticle and preparation method thereof |
| CN107954429A (en) * | 2017-06-30 | 2018-04-24 | 华南理工大学 | Silicon dioxide hollow microsphere and preparation method thereof and the application in insulating moulding coating |
| CN109563000A (en) * | 2016-08-26 | 2019-04-02 | 莱姆泰克株式会社 | Heat-insulating slurry composition utilizes its heat-barrier material and preparation method thereof |
| CN116554746A (en) * | 2023-05-15 | 2023-08-08 | 西南大学 | Environment-friendly heat-insulating anticorrosive paint and preparation method and application thereof |
| CN117534990A (en) * | 2023-09-28 | 2024-02-09 | 广东筑龙涂料有限公司 | High weather-proof nano heat insulating paint and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109563000A (en) * | 2016-08-26 | 2019-04-02 | 莱姆泰克株式会社 | Heat-insulating slurry composition utilizes its heat-barrier material and preparation method thereof |
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| CN106433357B (en) * | 2016-09-29 | 2019-01-08 | 沈阳理工大学 | A kind of industrial heat insulating coatings |
| CN107954429A (en) * | 2017-06-30 | 2018-04-24 | 华南理工大学 | Silicon dioxide hollow microsphere and preparation method thereof and the application in insulating moulding coating |
| CN107954429B (en) * | 2017-06-30 | 2020-01-10 | 华南理工大学 | Silicon dioxide hollow microsphere, preparation method thereof and application thereof in heat-insulating coating |
| CN107189596A (en) * | 2017-08-02 | 2017-09-22 | 合肥广民建材有限公司 | A kind of heat-preservation building paint containing nanoparticle and preparation method thereof |
| CN116554746A (en) * | 2023-05-15 | 2023-08-08 | 西南大学 | Environment-friendly heat-insulating anticorrosive paint and preparation method and application thereof |
| CN116554746B (en) * | 2023-05-15 | 2024-05-14 | 西南大学 | Environment-friendly heat-insulating anticorrosive paint and preparation method and application thereof |
| CN117534990A (en) * | 2023-09-28 | 2024-02-09 | 广东筑龙涂料有限公司 | High weather-proof nano heat insulating paint and preparation method thereof |
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Application publication date: 20160615 |