CN114516735B - Non-combustible polyphenyl particle composite board and preparation method thereof - Google Patents
Non-combustible polyphenyl particle composite board and preparation method thereof Download PDFInfo
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- CN114516735B CN114516735B CN202210200934.4A CN202210200934A CN114516735B CN 114516735 B CN114516735 B CN 114516735B CN 202210200934 A CN202210200934 A CN 202210200934A CN 114516735 B CN114516735 B CN 114516735B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1074—Silicates, e.g. glass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The application relates to the field of polystyrene boards, and particularly discloses a non-combustible polystyrene particle composite board and a preparation method thereof, wherein the non-combustible polystyrene particle composite board comprises the following raw materials: water, cement, silica fume, modified flame-retardant polystyrene particles, styrene-acrylic emulsion, alcohol ester twelve, a foaming agent, a polycarboxylic acid water reducing agent and a composite filler. The preparation method comprises the following steps: step one, mixing and stirring cement, water, silica fume and a polycarboxylic acid water reducing agent uniformly to prepare cement paste; step two, stirring and mixing the modified flame-retardant polystyrene particles, the alcohol ester dodecyl benzene, the styrene-acrylic emulsion and the composite filler uniformly, standing and maintaining to prepare polystyrene slurry; and step three, uniformly stirring and mixing the cement slurry, the polystyrene slurry and the foaming agent, and performing compression molding to obtain the non-combustible polystyrene particle composite board. The composite board prepared by the method has excellent fire resistance, good fire-proof grade, no crack, pulverization and peeling phenomena after repeated temperature difference change, and excellent weather resistance.
Description
Technical Field
The application relates to the field of polystyrene boards, in particular to a non-combustible polystyrene particle composite board and a preparation method thereof.
Background
At present, the materials used for domestic building heat preservation mainly comprise organic materials such as polystyrene foam and polyurethane foam, and inorganic materials such as rock wool, glass wool and heat preservation mortar. Rock wool and foam glass plates consume a large amount of energy in the production process, and rock wool products also have the problem of high water absorption; the inorganic heat-insulating mortar has low strength of heat-insulating materials during construction stirring, is easy to break, increases the density and reduces the heat-insulating effect. Along with the intensive research, a TEPS insulation board is gradually developed, and the TEPS insulation board is a plate-shaped product which is compounded by using polystyrene foam particles or plates as an insulation matrix and using a treating agent.
For example, chinese patent with publication number CN106566101A discloses an organic-inorganic composite flame-retardant heat-insulating material, which is prepared from the following raw materials in parts by weight: 55-160 parts of organic foam particles for foaming cement slurry treatment and interface treatment and 20-35 parts of polyurethane foamable glue solution; the organic foam particles are selected from: polystyrene foam, phenolic resin foam, or polyurethane foam; the foamed cement paste treating fluid is prepared from the following raw materials in parts by weight: 630 parts of rapid hardening sulphoaluminate cement, 40 parts of fly ash, 30 parts of calcined diatomite, 100 parts of silica fume, 7-10 parts of animal protein foaming agent, 335-400 parts of water, 3 parts of polycarboxylic acid water reducing agent and 0.35 part of PP fiber; the organic foam particle interface treatment glue solution is prepared from the following raw materials in parts by weight: 500 parts of deionized water, 35 parts of styrene-acrylic emulsion, 1.5 parts of silica sol and 2.5 parts of triethanolamine; the polyurethane foamable glue solution is prepared from the following raw materials in parts by weight: 80 parts of polyether polyol, 110 parts of crude MDI, 0.1 part of triethanolamine, 0.3 part of dibutyltin dilaurate, 3 parts of water, 3 parts of silicone oil, 10 parts of diatomite and 10 parts of expandable graphite.
The insulation board prepared by the raw material components cannot endure the change of the environment for a long time in a place with large temperature difference between day and night, and has the phenomena of cracking, pulverization, even peeling and the like after being used for a long time, and the weather resistance of the product is poor.
Disclosure of Invention
In order to effectively improve the weather resistance of the composite board and reduce the phenomena of cracking, pulverization and peeling of the product after the product is subjected to repeated temperature difference change; the application provides a non-combustible polyphenyl particle composite board and a preparation method thereof.
In a first aspect, the application provides a non-combustible polyphenyl particle composite board, which adopts the following technical scheme:
the non-combustible polyphenyl particle composite board comprises the following raw materials in parts by weight: 80-90 parts of water, 120-150 parts of cement, 15-20 parts of silica fume, 30-50 parts of modified flame-retardant polystyrene particles, 3-8 parts of styrene-acrylic emulsion, 1-3 parts of dodecyl alcohol ester, 2-5 parts of foaming agent, 1-4 parts of polycarboxylic acid water reducing agent and 25-45 parts of composite filler, wherein the composite filler comprises aerogel, polyimide powder and ferrocene, and the modified flame-retardant polystyrene particles comprise polystyrene particles, flame retardant and weather-resistant powder.
By adopting the technical scheme, the cement base is used as a cementing material, and the cementing material is connected with the modified flame-retardant polystyrene particles more compactly under the action of the styrene-acrylic emulsion, the alcohol ester and the composite filler, so that the acting force between the cement and the modified flame-retardant polystyrene particles is enhanced, the bonding force between the organic material and the inorganic material is improved, and the phenomena of cracks and hollowing of the product are reduced. The alcohol ester dodecahydrate has excellent hydrolytic stability, is absorbed on emulsion particles when in use, softens the particles, enables the particles to be better fused, can effectively coalesce the emulsion particles, has good film forming property and forms close connection with a cement base; the ferrocene in the composite filler contains cyclopentadiene group and iron ion, the alcohol ester dodecamolecule contains hydroxyl, and the hydroxyl can generate complexation with the iron ion to form a net structure, thereby effectively improving the compactness in the composite plate and improving the weather resistance of the product.
The polyimide has excellent mechanical strength and good thermal stability, and after being compounded with aerogel and ferrocene, the composite filler can be cooperated with cement base in a system to improve the strength of a product, and can also reduce the heat conductivity coefficient of a composite board and ensure the heat preservation performance of the composite board.
Polystyrene particles are used as raw materials, and a flame retardant and weather-resistant powder are added to modify the polystyrene particles, so that the modified flame-retardant polystyrene particles have excellent fireproof performance and weather resistance, and the phenomena of cracking, chalking and peeling of the modified flame-retardant polystyrene particles after the modified flame-retardant polystyrene particles are subjected to repeated temperature difference change are effectively reduced.
Preferably, the mass ratio of the polystyrene particles, the flame retardant and the weather-resistant powder is (2.4-3.6) to (0.1-0.4) to (0.5-1) based on the modified flame-retardant polystyrene particles.
By adopting the technical scheme, the dosage relationship among the polystyrene particles, the flame retardant and the weather-resistant powder is further optimized, and the fireproof performance and the weather resistance of the modified flame-retardant polystyrene particles are improved, so that the quality of the composite board is improved.
Preferably, the modified flame-retardant polystyrene particles comprise the following preparation steps:
step 1, melting polystyrene particles, adding a flame retardant, uniformly mixing, keeping the temperature for 40-65min, and extruding and granulating to obtain flame-retardant polystyrene particles;
and 2, placing the flame-retardant polystyrene particles in a calcium hydroxide solution, heating to 50-60 ℃, and spraying weather-resistant powder on the surfaces of the flame-retardant polystyrene particles to obtain the modified flame-retardant polystyrene particles.
By adopting the technical scheme, the flame retardant is added into the polystyrene particles in a molten state, so that the flame-retardant polystyrene particles contain flame-retardant components, the flame resistance of the raw materials can be effectively improved, the prepared flame-retardant polystyrene particles have excellent fire resistance, and the prepared composite board has excellent flame resistance and good fire resistance. The flame-retardant polystyrene particles are placed in a calcium hydroxide solution and heated to a certain temperature, a certain etching effect is exerted on the surfaces of the flame-retardant polystyrene particles, the apparent performance of the flame-retardant polystyrene particles is improved, so that certain pores are generated on the surfaces of the particles, meanwhile, a certain content of calcium ions can be attached to the surfaces of the particles, after the weather-resistant powder is sprayed, a formed weather-resistant powder layer is well attached to the surfaces of the particles, the weather-resistant performance of the composite plate is improved by cooperation with other substances, and the phenomena of cracking, pulverization and peeling of the composite plate after the composite plate is subjected to repeated temperature difference change are reduced.
Preferably, the flame retardant is selected from at least two of zinc borate, expandable graphite, and magnesium hydroxide.
By adopting the technical scheme, the component selection of the flame retardant is optimized, and the fireproof performance of the composite board is further improved.
Preferably, the weather-resistant powder is polytetrafluoroethylene micro powder, sodium alginate and mica powder.
By adopting the technical scheme, the polytetrafluoroethylene micro powder and the mica powder have good heat resistance and dispersibility, high self-lubricating property, high flame retardance and excellent weather resistance, and can effectively improve the flame retardance and the weather resistance of a system, and the sodium alginate can perform a crosslinking reaction with calcium ions attached to the surfaces of the flame-retardant polystyrene particles, so that the adhesive force of the weather-resistant powder on the surfaces of the particles can be improved, the adhesive force between a cement base and the modified flame-retardant polystyrene particles can be obviously improved, the internal structure of a product is improved, and the phenomena of cracking, pulverization, hollowing and peeling of the product after the product is subjected to repeated temperature difference change are further reduced.
Preferably, the mass ratio of the polytetrafluoroethylene micro powder to the sodium alginate to the mica powder is (1.6-3) to (0.4-1) to (3-6).
By adopting the technical scheme, the proportion of the polytetrafluoroethylene micro powder, the sodium alginate and the mica powder is optimized, and the weather resistance and the fire resistance of the product are further improved.
Preferably, the mass ratio of the aerogel, the polyimide powder and the ferrocene based on the composite filler is (2-3.6): 0.3 (0.2-0.6).
Through adopting above-mentioned technical scheme, optimize the ratio relation of aerogel, polyimide powder and ferrocene, when improving composite sheet intensity, can cooperate with other raw materials, improve the weatherability of composite sheet, guarantee the heat preservation and heat insulation performance of composite sheet.
Preferably, the foaming agent is nonylphenol polyoxyethylene ether.
By adopting the technical scheme, the selection of the components of the foaming agent is optimized, compact bubbles are formed in the composite board, and the porosity of the composite board is increased, so that the heat conductivity coefficient of the composite board is reduced, and the heat insulation performance of the composite board is ensured; the polyoxyethylene nonyl phenyl ether also contains phenolic hydroxyl, and the phenolic hydroxyl can be complexed with ferrocene, so that the compactness of the interior of the composite plate is improved, and the weather resistance of the product is improved.
In a second aspect, the application provides a preparation method of a non-combustible polyphenyl particle composite board, which adopts the following technical scheme:
a preparation method of a non-combustible polyphenyl particle composite board comprises the following steps:
step one, mixing and stirring cement, water, silica fume and a polycarboxylic acid water reducing agent uniformly according to the formula amount to prepare cement slurry;
step two, stirring and mixing the modified flame-retardant polystyrene particles, the alcohol ester dodeca, the styrene-acrylic emulsion and the composite filler uniformly according to the formula amount, and standing and maintaining to prepare polystyrene slurry;
and step three, uniformly stirring and mixing the cement slurry, the polystyrene slurry and the foaming agent, and placing the mixture in a mould for compression molding to obtain the non-combustible polystyrene particle composite board.
By adopting the technical scheme, the cement paste is prepared firstly to serve as a cementing material for later use, the modified flame-retardant polystyrene particles, the styrene-acrylic emulsion and the composite filler are maintained under certain maintenance conditions to excite the action of each raw material component, and finally, the cement paste, the polystyrene slurry and the foaming agent are stirred and mixed uniformly, the raw material components are prepared step by step, the uniformity of a system is ensured, so that the raw material components can react better, and the comprehensive quality of the composite plate is improved.
Preferably, the curing conditions in the second step are as follows: the temperature is 50-65 ℃, and the curing time is 30-40min.
By adopting the technical scheme, the maintenance conditions are optimized, so that the raw material components are excited to play a role, and the comprehensive quality of the composite board is improved.
In summary, the present application has the following beneficial effects:
1. the cement base is used as a cementing material, under the action of the styrene-acrylic emulsion, the alcohol ester and the composite filler, the cement base and the modified flame-retardant polystyrene particles form more compact connection, the acting force between the cement and the modified flame-retardant polystyrene particles is enhanced, the binding force between an organic material and an inorganic material is improved, and the phenomena of cracks and hollowing of a product are reduced.
2. The flame retardant is added into the polystyrene particles in a molten state, so that the flame-retardant polystyrene particles contain flame-retardant components, the flame resistance of the raw materials can be effectively improved, the prepared flame-retardant polystyrene particles have excellent fire resistance, and the prepared composite board has excellent flame resistance and good fire resistance. The flame-retardant polystyrene particles are placed in a calcium hydroxide solution and heated to a certain temperature, a certain etching effect is exerted on the surfaces of the flame-retardant polystyrene particles, the apparent performance of the flame-retardant polystyrene particles is improved, so that certain pores are generated on the surfaces of the particles, meanwhile, a certain content of calcium ions can be attached to the surfaces of the particles, after the weather-resistant powder is sprayed, a formed weather-resistant powder layer is well attached to the surfaces of the particles, the weather-resistant performance of the composite plate is improved by cooperation with other substances, and the phenomena of cracking, pulverization and peeling of the composite plate after the composite plate is subjected to repeated temperature difference change are reduced.
3. The polytetrafluoroethylene micro powder and the mica powder have good heat resistance and dispersibility, high self-lubricating property, high flame retardance and excellent weather resistance, and can effectively improve the flame retardance and the weather resistance of a system, and the sodium alginate can perform a crosslinking reaction with calcium ions attached to the surfaces of the flame-retardant polystyrene particles, so that the adhesive force of the weather-resistant powder on the surfaces of the particles can be improved, the adhesive force between a cement base and the modified flame-retardant polystyrene particles can be obviously improved, the internal structure of a product is improved, and the phenomena of cracking, pulverization, hollowing and peeling of the product after the product is subjected to repeated temperature difference change are further reduced.
Detailed Description
The present application will be described in further detail with reference to examples.
All the raw materials in the application are common commercial raw materials.
Preparation examples
Preparation example 1
The modified flame-retardant polystyrene particle comprises the following preparation steps:
step 1, melting polystyrene particles, adding a flame retardant, uniformly mixing, keeping the temperature for 60min, and extruding and granulating to obtain flame-retardant polystyrene particles; the flame retardant is zinc borate and expandable graphite;
step 2, placing the flame-retardant polystyrene particles in a calcium hydroxide solution with the mass concentration of 10%, heating to 55 ℃, and then uniformly spraying weather-resistant powder on the surfaces of the flame-retardant polystyrene particles to form weather-resistant powder layers on the surfaces, so as to obtain modified flame-retardant polystyrene particles; the weather-resistant powder is polytetrafluoroethylene micro powder, sodium alginate and mica powder;
wherein: the mass ratio of the polystyrene particles to the flame retardant to the weather-resistant powder is 2.4;
the mass ratio of the zinc borate to the expandable graphite is 2:3;
the mass ratio of the polytetrafluoroethylene micro powder to the sodium alginate to the mica powder is 1.6.
Preparation example 2
The difference from the preparation example 1 is that the mass ratio of the polystyrene particles, the flame retardant and the weather-resistant powder is 3.6.
Preparation example 3
The difference from the preparation example 1 is that the mass ratio of the polystyrene particles, the flame retardant and the weather-resistant powder is 3.
Preparation example 4
The difference from the preparation example 1 is that the mass ratio of the polystyrene particles, the flame retardant and the weather-resistant powder is 2.6.
Preparation example 5
The difference from the preparation example 3 is that the flame retardant is expandable graphite and magnesium hydroxide, the mass ratio of the expandable graphite to the magnesium hydroxide is 2:1, and the rest is the same as the preparation example 3.
Preparation example 6
The difference from the preparation example 3 is that the flame retardant is zinc borate, expandable graphite and magnesium hydroxide, the mass ratio of the zinc borate to the expandable graphite to the magnesium hydroxide is 1.
Preparation example 7
The difference from the preparation example 5 is that the mass ratio of the polytetrafluoroethylene micro powder, the sodium alginate and the mica powder is 3.
Preparation example 8
The difference from the preparation example 5 is that the mass ratio of the polytetrafluoroethylene micro powder, the sodium alginate and the mica powder is 2.4.
Preparation example 9
The difference from the preparation example 5 is that the mass ratio of the polytetrafluoroethylene micro powder, the sodium alginate and the mica powder is 3.5.
Examples
Example 1
The non-combustible polyphenyl particle composite board comprises the following raw materials: 80kg of water, 120kg of cement, 20kg of silica fume, 30kg of modified flame-retardant polystyrene particles prepared in preparation example 1, 8kg of styrene-acrylic emulsion, twelve 1kg of alcohol ester, 2kg of nonylphenol polyoxyethylene ether, 1kg of polycarboxylic acid water reducing agent, 2kg of aerogel, 0.3kg of polyimide powder and 0.6kg of ferrocene;
the preparation method of the non-combustible polyphenyl particle composite board comprises the following steps:
step one, mixing and stirring cement, water, silica fume and a polycarboxylic acid water reducing agent uniformly according to the formula amount to prepare cement slurry;
step two, stirring and mixing the modified flame-retardant polystyrene particles, the nonylphenol polyoxyethylene ether, the styrene-acrylic emulsion, the aerogel, the polyimide powder and the ferrocene uniformly according to the formula amount, and standing and maintaining for 40min at the temperature of 50 ℃ to prepare polystyrene slurry;
and step three, mixing and homogenizing cement paste and polystyrene paste, and placing the mixture into a mold for compression molding to obtain the non-combustible polystyrene particle composite board.
Example 2
The non-combustible polyphenyl particle composite board comprises the following raw materials: 90kg of water, 150kg of cement, 15kg of silica fume, 50kg of modified flame-retardant polystyrene particles prepared in preparation example 1, 3kg of styrene-acrylic emulsion, twelve 3kg of alcohol ester, 5kg of nonylphenol polyoxyethylene ether, 4kg of polycarboxylic acid water reducing agent, 2kg of aerogel, 0.3kg of polyimide powder and 0.6kg of ferrocene;
the preparation method of the non-combustible polyphenyl particle composite board comprises the following steps:
step one, mixing and stirring cement, water, silica fume and a polycarboxylic acid water reducing agent uniformly according to the formula amount to prepare cement slurry;
step two, stirring and mixing the modified flame-retardant polystyrene particles, the nonylphenol polyoxyethylene ether, the styrene-acrylic emulsion, the aerogel, the polyimide powder and the ferrocene uniformly according to the formula amount, and standing and maintaining for 30min at the temperature of 65 ℃ to prepare polystyrene slurry;
and step three, mixing and homogenizing cement paste and polystyrene paste, and placing the mixture into a mold for compression molding to obtain the non-combustible polystyrene particle composite board.
Example 3
The non-combustible polyphenyl particle composite board comprises the following raw materials: 86kg of water, 142kg of cement, 18kg of silica fume, 42kg of modified flame-retardant polystyrene particles prepared in preparation example 1, 6.8kg of styrene-acrylic emulsion, 2kg of alcohol ester, 4kg of nonylphenol polyoxyethylene ether, 2.6kg of polycarboxylic acid water reducing agent, 2kg of aerogel, 0.3kg of polyimide powder and 0.6kg of ferrocene;
the preparation method of the non-combustible polyphenyl particle composite board comprises the following steps:
step one, mixing and stirring cement, water, silica fume and a polycarboxylic acid water reducing agent uniformly according to the formula amount to prepare cement slurry;
step two, stirring and mixing the modified flame-retardant polystyrene particles, the nonylphenol polyoxyethylene ether, the styrene-acrylic emulsion, the aerogel, the polyimide powder and the ferrocene uniformly according to the formula amount, and standing and maintaining for 35min at the temperature of 60 ℃ to prepare polystyrene slurry;
and step three, mixing and homogenizing cement paste and polystyrene paste, and placing the mixture into a mold for compression molding to obtain the non-combustible polystyrene particle composite board.
Example 4
The difference from example 3 is that the modified flame-retardant polystyrene particles obtained in preparation example 2 were used, and the rest was the same as example 3.
Example 5
The difference from example 3 is that the modified flame-retardant polystyrene particles obtained in preparation example 3 were used, and the rest was the same as example 3.
Example 6
The difference from example 3 is that modified flame-retardant polystyrene particles obtained in preparation example 4 were used, and the rest was the same as example 3.
Example 7
The difference from example 3 is that modified flame-retardant polystyrene particles obtained in preparation example 5 were used, and the rest was the same as example 3.
Example 8
The difference from example 3 is that modified flame-retardant polystyrene particles obtained in preparation example 6 were used, and the rest was the same as example 3.
Example 9
The difference from example 3 is that modified flame-retardant polystyrene particles obtained in preparation example 7 were used, and the rest was the same as example 3.
Example 10
The difference from example 3 is that modified flame-retardant polystyrene particles obtained in preparation example 8 were used, and the rest was the same as example 3.
Example 11
The difference from example 3 is that modified flame-retardant polystyrene particles obtained in preparation example 9 were used, and the rest was the same as example 3.
Example 12
The difference from example 10 is that the composite filler is aerogel 3.6kg, polyimide powder 0.3kg, ferrocene 0.2kg, and the rest is the same as example 10.
Example 13
The difference from example 10 is that the composite filler is aerogel 3kg, polyimide powder 0.3kg, ferrocene 0.5kg, and the rest is the same as example 10.
Example 14
The difference from example 13 is that the foaming agent is animal and vegetable protein foaming agent, and the rest is the same as example 13.
Comparative example
Comparative example 1
The difference from example 13 is that modified flame-retardant polystyrene particles were replaced with polystyrene particles in equal amounts, and the rest was the same as example 13.
Comparative example 2
The difference from example 13 is that mica powder was replaced with weather resistant powder in equal amount, and the rest was the same as example 13.
Comparative example 3
The difference from example 13 is that the composite filler was replaced with aerogel in equal amount, and the rest was the same as example 13.
Comparative example 4
The difference from example 13 is that twelve alcohol esters were not added, and the rest was the same as example 13.
Comparative example 5
The difference from the embodiment 13 is that the preparation method of the non-combustible polyphenyl particle composite board comprises the following steps: according to the formula, cement, water, silica fume, polycarboxylic acid water reducing, modified flame-retardant polystyrene particles, nonylphenol polyoxyethylene ether, styrene-acrylic emulsion, aerogel, polyimide powder and ferrocene are stirred and mixed uniformly, and the mixture is placed in a mold for compression molding to prepare the non-combustible polystyrene particle composite board; the rest is the same as in example 13.
Performance test
Carrying out weather resistance tests on the composite boards prepared in the examples 1 to 14 and the comparative examples 1 to 5 according to GB/T molded polyphenyl board thin plastered external thermal insulation system material, carrying out hot rain circulation for 140 times, carrying out appearance inspection and recording after every 20 hot rain cycles in the first 80 hot rain cycles, carrying out appearance inspection after every 10 hot rain cycles in the hot rain cycles after 80 th time, and recording the times of cracks, chalking, hollowing or peeling phenomena on the surfaces; after the hot rain cycle was completed, the hot and cold cycles were performed 15 times, and after the 5 th hot and cold cycle, appearance inspection was performed after every 2 hot and cold cycles, and the number of times of occurrence of cracks, powdering, hollowing, or peeling on the surface was recorded, and the results are recorded in table 1.
The composite boards prepared in examples 1 to 14 and comparative examples 1 to 5 were subjected to a thermal conductivity test according to GB/T10294-2008 "Heat insulation Material Stable thermal resistance and related characteristic determination thermal shield plate method", and fire rating determination according to GB/T8624-2006 "fire Performance Classification for building materials and products", and the above experimental results are recorded in Table 1.
TABLE 1 Experimental data
It can be seen from examples 1-14 in combination with table 1 that the composite panels prepared by the present application have excellent fire resistance, good fire rating, no cracking, chalking and flaking after repeated temperature differential changes, and excellent weatherability.
It can be seen from example 13 and comparative example 1 in combination with table 1 that polystyrene particles are directly used as raw materials and are not modified by flame retardant and weather-resistant powder, and it can be seen that the composite board prepared in comparative example 1 can only withstand 80 hot rain cycles and 5 hot cold cycles, the weather resistance is obviously reduced, and the fire-resistant grade can only reach the B2 standard.
It can be seen from the embodiment 13 and the comparative example 2 in combination with table 1 that only mica powder is used as weather-resistant powder, although mica powder also has excellent high temperature resistance, acid and alkali resistance and corrosion resistance, a single mica powder cannot cooperate with other components in the raw materials, and polytetrafluoroethylene micro powder, mica powder and sodium alginate are used in combination, so that the flame retardant property and weather resistance of the system can be effectively improved, and the flame retardant property and weather resistance can also be subjected to a cross-linking reaction with calcium ions attached to the surfaces of flame-retardant polystyrene particles, so that the adhesive force of the weather-resistant powder on the surfaces of the particles can be improved, the adhesive force between a cement base and modified flame-retardant polystyrene particles can be remarkably improved, the internal structure of the product is improved, and the phenomena of cracking, pulverization, hollowing and peeling of the product after repeated temperature difference changes are effectively reduced.
Combining example 13 with comparative example 3 and comparative example 4 and combining table 1, it can be seen that comparative example 3 only uses aerogel as filler, and no alcohol ester dodecamethylene is added in comparative example 4, and the composite boards prepared by comparative example 3 and comparative example 4 also have obviously reduced weather resistance, because the alcohol ester dodecamethylene has excellent hydrolytic stability, is absorbed on emulsion particles when in use, softens the particles and enables better fusion between the particles, can effectively coalesce the emulsion particles, has good film forming property, and forms tight connection with cement base; under the action of styrene-acrylic emulsion, alcohol ester twelve and the composite filler, a cement base is used as a cementing material, the cement base can form more compact connection with modified flame-retardant polystyrene particles, the acting force between cement and the modified flame-retardant polystyrene particles is enhanced, the binding force between an organic material and an inorganic material is improved, the phenomena of cracking, pulverization, hollowing and peeling of the product after repeated temperature difference change are effectively reduced, and the weather resistance of the product is improved.
The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.
Claims (7)
1. The non-combustible polyphenyl particle composite board is characterized by comprising the following raw materials in parts by weight: 80-90 parts of water, 120-150 parts of cement, 15-20 parts of silica fume, 30-50 parts of modified flame-retardant polystyrene particles, 3-8 parts of styrene-acrylic emulsion, 1-3 parts of dodecyl alcohol ester, 2-5 parts of foaming agent, 1-4 parts of polycarboxylic acid water reducing agent and 25-45 parts of composite filler, wherein the composite filler comprises aerogel, polyimide powder and ferrocene, and the modified flame-retardant polystyrene particles comprise polystyrene particles, flame retardant and weather-resistant powder; the weather-resistant powder is polytetrafluoroethylene micro powder, sodium alginate and mica powder; the mass ratio of the polytetrafluoroethylene micro powder to the sodium alginate to the mica powder is (1.6-3) to (0.4-1) to (3-6);
the modified flame-retardant polystyrene particle comprises the following preparation steps:
step 1, melting polystyrene particles, adding a flame retardant, uniformly mixing, keeping the temperature for 40-65min, and extruding and granulating to obtain flame-retardant polystyrene particles;
and 2, placing the flame-retardant polystyrene particles in a calcium hydroxide solution, heating to 50-60 ℃, and spraying weather-resistant powder on the surfaces of the flame-retardant polystyrene particles to obtain the modified flame-retardant polystyrene particles.
2. The incombustible polyphenyl granule composite board according to claim 1, wherein: based on the modified flame-retardant polystyrene particles, the mass ratio of the polystyrene particles to the flame retardant to the weather-resistant powder is (2.4-3.6) to (0.1-0.4) to (0.5-1).
3. A non-combustible polyphenyl particle composite board according to any one of claims 1-2, characterized in that: the flame retardant is selected from at least two of zinc borate, expandable graphite and magnesium hydroxide.
4. The incombustible polyphenyl granule composite board according to claim 1, wherein: based on the composite filler, the mass ratio of the aerogel, the polyimide powder and the ferrocene is (2-3.6) to 0.3 (0.2-0.6).
5. The incombustible polyphenyl granule composite board according to claim 1, wherein: the foaming agent is nonylphenol polyoxyethylene ether.
6. The method for preparing a non-combustible polyphenyl particle composite board according to any one of claims 1 to 5, wherein: the method comprises the following steps:
step one, mixing and stirring cement, water, silica fume and a polycarboxylic acid water reducing agent uniformly according to the formula amount to prepare cement slurry;
step two, stirring and mixing the modified flame-retardant polystyrene particles, the alcohol ester dodeca, the styrene-acrylic emulsion and the composite filler uniformly according to the formula amount, and standing and maintaining to prepare polystyrene slurry;
and step three, uniformly stirring and mixing the cement slurry, the polystyrene slurry and the foaming agent, and placing the mixture in a mould for compression molding to obtain the non-combustible polystyrene particle composite board.
7. The method for preparing the incombustible polyphenyl granule composite board according to claim 6, wherein the method comprises the following steps: the curing conditions in the second step are as follows: the temperature is 50-65 ℃, and the curing time is 30-40min.
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