CN112292362A - High-strength ultralight fireproof green heat-insulation core material plate and preparation method thereof - Google Patents
High-strength ultralight fireproof green heat-insulation core material plate and preparation method thereof Download PDFInfo
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- CN112292362A CN112292362A CN201980037141.1A CN201980037141A CN112292362A CN 112292362 A CN112292362 A CN 112292362A CN 201980037141 A CN201980037141 A CN 201980037141A CN 112292362 A CN112292362 A CN 112292362A
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- palm
- fire
- water
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- 239000011162 core material Substances 0.000 title claims abstract description 48
- 238000009413 insulation Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000000835 fiber Substances 0.000 claims abstract description 57
- 239000002994 raw material Substances 0.000 claims abstract description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 39
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 30
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 26
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 22
- 239000004115 Sodium Silicate Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 20
- 239000002893 slag Substances 0.000 claims description 20
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 20
- 239000010883 coal ash Substances 0.000 claims description 19
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229910021487 silica fume Inorganic materials 0.000 claims description 13
- 239000000049 pigment Substances 0.000 claims description 12
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 11
- 235000013539 calcium stearate Nutrition 0.000 claims description 11
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 230000009970 fire resistant effect Effects 0.000 claims description 9
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- UGZVNIRNPPEDHM-SBBOJQDXSA-L calcium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Ca+2].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O UGZVNIRNPPEDHM-SBBOJQDXSA-L 0.000 description 1
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- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
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- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
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- E04B1/942—Building elements specially adapted therefor slab-shaped
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
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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 provides a high strength weight ultralight fire prevention green thermal-insulated core plate and preparation method thereof, fire prevention green thermal-insulated core plate is formed by water and other raw materials preparation, wherein based on the weight of the raw materials except that water, the raw materials contains 0.1-10 wt% palm fibre, and the fibre length scope is 2mm to 15 mm. The fireproof green heat-insulation core material plate can give consideration to various excellent properties: a density of 180kg/m or less3(ii) a Coefficient of thermal conductivity: less than or equal to 0.055W/m.K; compressive strength: not less than 0.3 MPa; and combustion performance: standard a 1. And the preparation method is low in cost and energy consumption, and the product and the preparation method thereof are very environment-friendly.
Description
Technical Field
The present invention relates to a fire-proof heat-insulating core material board (Geo-insulator) and its preparation method. More particularly, the present invention relates to a high strength, lightweight, ultra-light fire-resistant thermal insulation core board, and an environmentally friendly method of making the same.
Background
Conventionally, insulation materials installed in buildings are generally made of light low-cost organic materials, such as Expanded Polystyrene (EPS), Extruded polystyrene foam (XPS), Polyurethane (PU), and the like. This type of material is popular because it is readily available and cost competitive. However, the use of such materials has devastating consequences. Because of their very low resistance to fire and heat, when ignited, flash-fire is extremely fast, releasing toxic gases. In fact, the use of such materials is responsible for the occurrence of significant fire accidents in the major cities in china and all over the world, resulting in significant loss of life.
In view of this, the national governments and regulatory authorities in countries including the academician (debye), saudi arabia, australia, etc., internationally impose strict regulations on insulation materials used in buildings, and it is necessary to perform incombustibility tests in accordance with local building regulations in different countries or regions. Taking china as an example, the related department of china stipulates that the combustion performance of building materials must reach the level a stipulated in GB8624 and 2012. According to the Chinese national standard 'fire performance grading of building materials and products' (GB8624-2012), the fire performance of the building heat-insulating material is divided into four grades: class a-non-combustible materials (articles); class B-flame retardant materials (articles); class C-combustible materials (articles); and class D-combustible materials (articles). And wherein the class A of the fire performance of flat plate-like building materials and products is further classified into class A1 and class A2, wherein class A1 has a higher fire resistance than class A2.
Currently, the heat insulating materials that can meet the class a standard are generally inorganic materials. The price of high quality and higher performance inorganic insulation materials is very high, which explains why they are less popular.
However, inorganic heat insulating materials have common problems of low strength, brittle texture, high water absorption rate, and high density in terms of physical properties. The use of such materials is often inconvenient because they require mixing or filling at the construction site, creating debris at the site and thus creating a burden on the landfill.
Inorganic materials such as cement, ceramics, foam glass and perlite are not environmentally friendly in their own production process and are high in energy consumption, being a major source of carbon emissions. For example, cement requires calcination, perlite requires calcination, ceramics requires firing, and foam glass also requires energy intensive production.
In summary, the fireproof heat insulation core material plate made of the heat insulation material meeting the a-level standard in the prior art has the disadvantages of high energy consumption, high pollution, high cost, low strength, brittle texture, high water absorption rate, high density and inconvenient construction, and thus a fireproof heat insulation core material plate with low production cost, high strength, ultralight weight and environmental protection is urgently needed.
Disclosure of Invention
It is an object of the present invention to overcome the disadvantages of the existing fire and heat insulating core panels currently on the market. The existing material can not simultaneously realize high strength, low density, incombustibility and good heat insulation effect, simultaneously uses recycled raw materials, and is manufactured by a method with very low energy consumption and environmental protection. The second purpose of the invention is to provide a preparation method of the high-strength, ultra-light and environment-friendly fireproof heat-insulation core material plate.
The application provides a green thermal-insulated core plate of high strength weight ultralight fire prevention. The fire-resistant green thermal insulation core material sheet is prepared from water and other raw materials, wherein the raw materials contain 0.1-10 wt% of palm fiber based on the weight of the raw materials except water, and wherein the palm fiber has a fiber length ranging from 2mm to 15 mm.
The application also provides a board, which comprises the fireproof green heat insulation core material board. The panel is ideal for use in the construction of any wall or to form part of any wall system.
The application also provides an environment-friendly preparation method of the high-strength ultralight fireproof green heat insulation core material plate, which comprises the step of mixing the palm fiber with other raw materials; wherein the feedstock contains 0.1-10 wt.% palm fibres based on the weight of the feedstock excluding water, and wherein the palm fibres have a fibre length in the range 2mm to 15 mm.
Compared with the fireproof heat-insulation core material plate made of the heat-insulation material meeting the A-level standard in the prior art, the fireproof heat-insulation core material plate provided by the invention has the advantages that the strength is high, the density is low, the standard of combustion performance A1 is met, the recycled raw materials are used, and the fireproof heat-insulation core material plate is produced in an environment-friendly mode. The invention utilizes the wastes generated in agricultural and industrial production in an environment-friendly way. It helps to reduce the burden of landfill by consuming industrial waste by-products and, at the same time, creates a very desirable insulation for the market. Such materials need to have complete physical properties such as being ultra light (equal to or less than 180 kg/m)3) Non-combustible (grade A1), and good sound and heat insulation. For example, density: equal to or less than 180kg/m3And heat conductivity coefficient: not more than 0.055W/m.K, compressive strength: not less than 0.3MPa, and combustion performance: standard a 1.
In addition to the above inherent advantages, the panels comprising the fire resistant thermal insulating core panels of the present application, when used to construct a wall, have sound insulation properties that can achieve STC ≧ 35dB and a two-hour fire rating.
The preparation method of the high-strength ultralight environment-friendly fireproof heat-insulation core material plate is low in cost, low in energy consumption and free of environment pollution. The process of the present invention uses a very high percentage of recycled material and its manufacturing process consumes very low levels of energy and does not contaminate rivers or streams. The product of the invention is ultra-light in weight, so that construction workers can construct on the site more easily. The present invention is a non-toxic class that is non-flammable and tested to meet european standards. In addition, the present invention has the combined advantages of organic (low thermal conductivity and water absorption) and inorganic (refractory) materials, and also has good cost efficiency. This makes the material readily available to the market.
In addition, the environmental protection concept of the invention has great social benefits for both human beings and the earth. Table 1 below provides a comparison of the performance of conventional building insulation materials commonly used in the market with the present invention.
Table 1 insulation performance comparison
Detailed Description
The invention provides a high-strength light-weight fireproof green heat-insulating core material plate which is prepared from water and other raw materials, wherein the raw materials contain 0.1-10 wt% of palm fibers based on the weight of the raw materials except water, and the fiber length of the palm fibers ranges from 2mm to 15 mm.
Preferably, the raw materials except water comprise active powder, a hardening agent, a foaming agent, a foam stabilizer and an optional functional additive; and wherein the reactive powder is selected from three or more of slag, coal ash, silica fume and metakaolin; the hardener is selected from two or more of sodium silicate, potassium hydroxide and sodium hydroxide; the foaming agent is selected from one or more of hydrogen peroxide and aluminum powder; the foam stabilizer is selected from one or more of calcium stearate and silicone amide; and the optional functional admixture is selected from one or more of a water reducing agent, a retarder and a pigment.
More preferably, the reactive powder is selected from three or more of 0.6 to 29.4 wt% of slag, 1.8 to 51.7 wt% of coal ash, 0.6 to 5.9 wt% of silica fume (silica fume), and 0.6 to 11.8 wt% of metakaolin; the hardening agent is selected from two or more of 17.6-35.3 wt% sodium silicate, 17.6-35.3 wt% potassium silicate, 0.6-8.8 wt% potassium hydroxide, and 0.6-8.8 wt% sodium hydroxide; the foaming agent is selected from one or more of 1.8-5.9 wt% of hydrogen peroxide and 1.8-5.9 wt% of aluminum powder; the foam stabilizer is selected from one or more of 0.1-5.9 wt% of calcium stearate and 0.1-5.9 wt% of silicone amide; and the optional functional admixture is selected from one or more of 0-10 wt% of water reducing agent, 0-10 wt% of retarder and 0-10 wt% of pigment; all percentages above are based on the weight of the raw materials except water.
Further preferably, the reactive powder is selected from three or more of 5-20 wt% of slag, 3-40 wt% of coal ash, 1-4 wt% of silica fume, and 5-11 wt% of metakaolin; the hardening agent is selected from two or more of 20-30 wt% sodium silicate, 20-30 wt% potassium silicate, 1-6 wt% potassium hydroxide and 1-6 wt% sodium hydroxide; the foaming agent is selected from one or more of 2-5 wt% of hydrogen peroxide and 2-5 wt% of aluminum powder; the foam stabilizer is selected from one or more of 0.1-4 wt% of calcium stearate and 0.1-4 wt% of silicone amide; the optional functional admixture is selected from one or more of 0-6 wt% of water reducing agent, 0-6 wt% of retarder and 0-6 wt% of pigment; and 2-6 wt% palm fibre; all percentages above are based on the weight of the raw materials except water.
Most preferably, the reactive powder is selected from three or more of 9-20 wt% slag, 10-40 wt% coal ash, 2-4 wt% silica fume, and 5-10 wt% metakaolin; the hardening agent is selected from two or more of 20-28 wt% sodium silicate, 20-28 wt% potassium silicate, 1-5 wt% potassium hydroxide and 1-5 wt% sodium hydroxide; the foaming agent is selected from one or more of 2-4.5 wt% of hydrogen peroxide and 2-4.5 wt% of aluminum powder; the foam stabilizer is selected from one or more of 0.1-3.5 wt% of calcium stearate and 0.1-3.5 wt% of silicone amide; the optional functional admixture is selected from one or more of 0-5 wt% of water reducing agent, 0-5 wt% of retarder and 0-5 wt% of pigment; and 2-5 wt% palm fibre; all percentages above are based on the weight of the raw materials except water.
The palm fibre used in the present invention is obtained from a plant of the family palmaceae, preferably from a plant of the genus palmae of the family palmaceae. Preferably, the palm fibres are derived from oil palm fruit residues obtained after extraction of palm oil, and the palm fibres have a water content of less than 20% and an oil content of less than 15%, more preferably the palm fibres have a water content of less than 15% and an oil content of less than 8%. Further preferably, the palm fibres have a water content of 10% or less and an oil content of 5% or less. Because the oil palm fruit residues contain residual oil, no additional surfactant is needed to be added when the high-strength ultralight environment-friendly fireproof heat-insulating core material plate is prepared. The palm fiber may also be leaf sheath fiber or coconut shell fiber of plant of Palmae.
Preferably, the feedstock contains 2-6 wt% palm fibres based on the weight of the feedstock excluding water, and wherein the palm fibres have a fibre length in the range 3mm to 9 mm. More preferably, the feedstock contains 3-6 wt% palm fibres based on the weight of the feedstock excluding water, and wherein the palm fibres have a fibre length in the range 7mm to 9 mm. The palm fibres may be of similar length. The palm fibres may have a fibre length of 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9, or 9 millimetres. Preferably, the palm fibres have a fibre length in the range 7.5-8.5 mm. Palm fibers of a particular length may be processed by shearing equipment (e.g., a blend fiber shear, etc.). A deviation in the length of the palm fibres of 0.5-1 mm is acceptable. Furthermore, the palm fibres according to the invention may also be a mixture of palm fibres having different lengths. For example, the palm fibres may be a mixture of palm fibres comprising 30-70% having a fibre length of 2-6mm, 5-40% having a fibre length of 7-9mm, and 3-30% having a fibre length of 10-15 mm. More preferably, the palm fibre blend comprises 40-60% having a fibre length of 2-6mm, 15-35% having a fibre length of 7-9mm, and 5-25% having a fibre length of 10-15 mm. A mixture of palm fibers is preferred because it can further improve the strength and toughness of the resulting fire-resistant green insulating core sheet.
In addition, the inventor of the present invention found that the palm fiber content of the raw material of the fireproof thermal insulation core material board except water can be adjusted according to different climates of application sites to obtain better performance. For example, when the final panel is installed in an area having a mediterranean climate, the feedstock contains 4-10 wt% palm fibres based on the weight of the feedstock excluding water. When the final board is installed in a subtropical monsoon climate zone, the feedstock contains 0.5-5 wt% palm fibres based on the weight of the feedstock excluding water. When the final panel is installed in an area having a temperate monsoon climate, the feedstock contains 3-7 wt% palm fibre based on the weight of the feedstock excluding water. When the final panel is installed in a subtropical climate zone, the raw material comprises 0.7-6 wt.% palm fibre based on the weight of the raw material excluding water. When the final panel is installed in an area with a temperate continental humid climate, the raw materials comprise 4-9 wt% palm fibres based on the weight of the raw materials excluding water.
The coal ash, namely fine ash, belongs to common solid waste in industrial pollutants. This is a waste by-product of the production of coal as a heat generating agent from an industrial or power station. Mainly produced by burning coal, and the main components are metal oxides such as FeO and Fe2O3、CaO、MgO、Na2O、TiO2Iso and non-metal oxide SiO2. For example, the powder collected in the flue gas of a pulverized coal furnace in a power plant is called fly ash. Preferably, the coal ash comprises SiO2、Al2O3、Fe2O3And CaO, and wherein the CaO content does not exceed 10 wt%. More preferably, the coal ash is F-type coal ash specified in the Chinese national standard GB/T1596-2005.
The slag of the present invention is a byproduct waste material in the process of producing metal. Which comprises SiO2、Al2O3MgO, and CaO. Preferably, the slag is ground granulated blast furnace slag based on the standard GB/T18046-. Preferably, the slag has a particle size in the range of 5-40mm, preferably 5-20mm, most preferably 5-10 mm. More preferably, the slag preferably conforms to the S95 grade specified in the Chinese national standard GB/T18046-2008.
Silica Fume (Silica Fume), also known as microsilica (CAS No. 69012-64-2, EINECS No. 273-761-1), is an amorphous (non-crystalline) polymorph of silicon dioxide, Silica. It is an ultra-fine powder collected as a by-product of silicon and ferrosilicon production, consisting of spherical particles with an average particle size of about 150 nm.
The metakaolin of the present invention is derived from the dehydration of kaolin. By providing heat to the kaolin above 700 ℃, it reforms the kaolin into metakaolin. After dehydration, it contains a high percentage of SiO2And Al2O3For producing geopolymer structures. The particle size of the metakaolin is in the range of 5 to 40mm, preferably 5 to 20mm, most preferably 5 to 10 mm.
The blowing agents used in the present invention do not release any harmful gases upon foaming. Preferably, the blowing agent is a 25 to 60 wt% aqueous hydrogen peroxide solution. More preferably, the hydrogen peroxide is a 25-50 wt% aqueous hydrogen peroxide solution.
The hardening agent used in this application comprises water glass which is an aqueous dispersion of sodium or potassium silicate having a solids content of 10 to 40% by weight. Preferably, the hardening agent is a specific mixture of sodium silicate and sodium hydroxide or a mixture of potassium silicate and potassium hydroxide. Preferably, sodium silicate containing sodium hydroxide is desired. By providing sodium hydroxide, the modulus ratio of sodium silicate can be varied. However, the main purpose of the sodium hydroxide addition is to increase the strength and dissolve more Si from the active powder4+And Al3+Ions. Modulus of preferred water glassThe ratio is 3.1 to 3.4 modulus. Preferably, the sodium silicate aqueous dispersion is liquid sodium silicate which meets the 'liquid-2' model specified in the Chinese national standard GB/T4209-2008. The sodium silicate requires 99% wt of sodium and the modulus ratio of the water glass becomes 1.2-1.6 modulus. The solids content of the water glass according to the invention is < 40%, more preferably 20 to 40% by weight, most preferably 30 to 40% by weight.
Foam stabilizers used in the present application include calcium stearate or silicone amides. Preferably, technical grade calcium stearate is required.
The water reducing agent may be a water reducing agent commonly used in the art, such as lignosulfonates, naphthalene sulfonate formaldehyde polymers, and the like.
The retarder may be one commonly used in the art, such as calcium saccharate, gluconate, citric acid, tartaric acid and its salts, zinc salts, phosphate salts, and the like.
The pigment may be a pigment commonly used in the art, such as iron oxide, manganese dioxide, chromium oxide, cobalt blue, carbon black, and the like.
Most preferably, the coal ash is coal ash from coal fired power stations, the slag is slag from steel mills, and the palm fibres are from oil palm fruit residue obtained after extraction of palm oil. Thus, the solid wastes can be effectively utilized and changed into valuables. It has the advantages of low energy consumption and no waste discharge.
The application also provides a wall system comprising the fireproof green heat insulation core material plate. The fire-proof green insulation core material plate can be installed at the center of the wall system or at one side or both sides of the main body part thereof. The wall body system not only meets the requirements of fire prevention and heat insulation, but also has excellent sound insulation performance.
The invention also provides an environment-friendly preparation method of the high-strength ultralight fireproof green heat insulation core material plate, which comprises the step of mixing the palm fiber with other raw materials; wherein the feedstock contains 0.1-10 wt.% palm fibres based on the weight of the feedstock excluding water, and wherein the palm fibres have a fibre length in the range 2mm to 15 mm.
Preferably, the preparation method of the high-strength ultra-light fireproof green heat insulation core material plate comprises the following steps:
a) mixing water, active powder, a hardening agent, a foam stabilizer, palm fiber and optional functional additives at the rotation speed of 400-800rpm until homogenization, wherein the weight ratio of the water to the raw materials except water is 1: 50 to 1: 2;
b) adding a foaming agent to the mixture of a) for 7-20 seconds at a rotation speed of 700 and 1000rpm to generate a pore structure;
c) pouring the mixture of b) into a container mold and curing for 1-12 hours;
d) demolding and cutting the cured board of c) to the desired size, and
e) continuing to cure the cut plate of d) for 1-30 days;
wherein the raw materials except water comprise active powder, a hardening agent, a foaming agent, a foam stabilizer and optional functional additives; and wherein
The active powder is selected from three or more of slag, coal ash, silica fume and metakaolin;
the hardener is selected from two or more of sodium silicate, potassium hydroxide and sodium hydroxide;
the foaming agent is selected from one or more of hydrogen peroxide and aluminum powder;
the foam stabilizer is selected from one or more of calcium stearate and silicone amide; and
the optional functional admixture is selected from one or more of a water reducing agent, a retarder and a pigment.
Further preferably, a) water, active powder, hardener, foam stabilizer and palm fibre are mixed to homogeneity at a speed of 600-800rpm, wherein the weight ratio of water to the raw materials other than water is 1: 30 to 1: 4; b) adding a blowing agent to the mixture of a) for 5-15 seconds at a rotational speed of 860 and 960rpm to produce a cell structure; c) pouring the mixture of b) into a container mold and curing for 8-12 hours; d) demolding and cutting the cured board of c) to the desired size, and e) continuing to cure the cut board of d) for 7-28 days.
More preferably wherein said step b) is carried out at a temperature in the range of from 15 to 35 ℃; step c) is carried out within the temperature range of less than or equal to 100 ℃; step c) curing at a humidity of not less than 50%; and when the mixture of the step c) is sampled to 160-270kg/m3When the density is within the range, step d) is carried out.
The performance of the fireproof green heat-insulation core material plate is tested according to the following standards:
1. the density measurement is based on JC/T2200-2013;
2. the compressive strength test method is based on JC/T2200-2013;
3. the combustion performance method is based on BS EN 13501-1: 2007+ A1: 2009 or GB 8624-2012;
4. the water absorption rate is based on JC/T2200-2013;
5. the sound insulation performance is based on BS EN ISO 140-3: 1995; and
6. the fire resistance is based on BS EN 1364-1: 1999.
the present invention will be further described with reference to the following examples.
Example 1
This example is used to illustrate the fireproof green heat insulation core material plate and the preparation method thereof of the present invention, and the raw material mixture ratio is shown in the following table 2:
TABLE 2
1. Pretreatment of palm fibre
Palm fibre is derived from oil palm residue obtained after extraction of palm oil from an oil palm refinery, and the applicant purchased and used palm fibre purchased from a material importer. The water content of the used palm fiber is less than or equal to 20 percent, and the oil content is 8 percent. The shearing apparatus is used to produce palm fibres having the above defined length.
2. Preparation of the plates
a) Mixing water, active powder, hardener, foam stabilizer, palm fiber and pigment at a rotation speed of 600rpm until homogeneous; wherein the weight ratio of water to the raw materials except water is 1: 16.
b) Adding a blowing agent to the mixture of a) at 29 ℃ for 6 seconds at a speed of 900rpm to produce a cell structure;
c) pouring the mixture of b) into a container mold and curing at 29 ℃ for 12 hours at 70% humidity;
d) when the mixture of the sampling step c) reaches the density of 200kg/m3When cured, the panel is demolded and cut to the desired size (15 cm. times.15 cm for testing), and
e) curing of the cut panels was continued for 28 days.
3. Results of board Performance test
The test results shown in table 3 are from at least 20 samples. And the air insulation effect is obtained from the wall assembled from the panel made of the fireproof heat insulation core material plate of the above step 2.
TABLE 3
| Density (kg/m)3) | 180(JC/T-2200) |
| Fire rating | Grade A1 (GB8624-2012) |
| Compressive strength (MPa) | 0.35(JC/T-2200) |
| Thermal conductivity | 0.055w/m.k(JC/T-2200) |
| Water absorption | 10％(JC/T-2200) |
| Asbestos fiber | Undetected (EPA-600) |
| Content of harmful substance | Reach standard (GL-008- |
| Air sound insulation performance of wall system | 42dB(BS EN ISO 140-3) |
| Fire protection of wall systems | >2-Hr(BS EN 1364-1) |
Examples 2 to 10
The fire and heat insulating core board of the present invention was prepared and tested according to the method of example 1. The differences are shown in table 4 below:
TABLE 4 (parts by weight)
Table 4 (continuation)
Table 4 (continuation)
The performance tests of all samples are shown in table 5 below.
TABLE 5
As a result, the fire-proof heat-insulating core material sheet of all examples can achieve a compromise of excellent properties: a density of 180kg/m or less3(ii) a The heat conductivity coefficient is less than or equal to 0.055W/m.K; the compressive strength is more than or equal to 0.3 MPa; and combustion performance: standard a 1. The wall system with the above core material plate has good fire-proof and sound-proof performance.
All publications and patent applications mentioned in this specification are indicative of the level of skill of those skilled in the art to which this invention pertains. All publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference.
While certain embodiments have been described, they have been presented by way of example only, and are not intended to limit the scope of the invention. The accompanying claims and their equivalents in this specification are to be construed to cover such forms or modifications as would fall within the scope and spirit of the invention.
Claims (16)
1. A high strength, ultra light weight, fire-resistant, green insulating core panel prepared from water and other raw materials, wherein the raw materials contain 0.1-10 wt.% of palm fibers based on the weight of the raw materials except water, and wherein the palm fibers have a fiber length in the range of 2mm to 15 mm.
2. The fire-resistant green insulation core board of claim 1, wherein the raw materials other than water include a reactive powder, a hardener, a foaming agent, a foam stabilizer, and optionally a functional additive; and wherein
The active powder is selected from three or more of slag, coal ash, silica fume and metakaolin;
the hardener is selected from two or more of sodium silicate, potassium hydroxide and sodium hydroxide;
the foaming agent is selected from one or more of hydrogen peroxide and aluminum powder;
the foam stabilizer is selected from one or more of calcium stearate and silicone amide; and
the optional functional admixture is selected from one or more of a water reducing agent, a retarder and a pigment.
3. The fire-protective green insulation core sheet of claim 2,
the active powder is selected from three or more of 0.6-29.4 wt% of slag, 1.8-51.7 wt% of coal ash, 0.6-5.9 wt% of silica fume and 0.6-11.8 wt% of metakaolin;
the hardening agent is selected from two or more of 17.6-35.3 wt% sodium silicate, 17.6-35.3 wt% potassium silicate, 0.6-8.8 wt% potassium hydroxide, and 0.6-8.8 wt% sodium hydroxide;
the foaming agent is selected from one or more of 1.8-5.9 wt% of hydrogen peroxide and 1.8-5.9 wt% of aluminum powder;
the foam stabilizer is selected from one or more of 0.1-5.9 wt% of calcium stearate and 0.1-5.9 wt% of silicone amide; and
the optional functional admixture is selected from one or more of 0-10 wt% of water reducing agent, 0-10 wt% of retarder and 0-10 wt% of pigment;
all percentages above are based on the weight of the raw materials except water.
4. The fire-protective green insulation core sheet of claim 3,
the active powder is selected from three or more of 5-20 wt% of slag, 3-40 wt% of coal ash, 1-4 wt% of silica fume and 5-11 wt% of metakaolin;
the hardening agent is selected from two or more of 20-30 wt% sodium silicate, 20-30 wt% potassium silicate, 1-6 wt% potassium hydroxide and 1-6 wt% sodium hydroxide;
the foaming agent is selected from one or more of 2-5 wt% of hydrogen peroxide and 2-5 wt% of aluminum powder;
the foam stabilizer is selected from one or more of 0.1-4 wt% of calcium stearate and 0.1-4 wt% of silicone amide;
the optional functional admixture is selected from one or more of 0-6 wt% of water reducing agent, 0-6 wt% of retarder and 0-6 wt% of pigment; and
2-6% by weight of palm fibres;
all percentages above are based on the weight of the raw materials except water.
5. The fire-protective green insulating core panel of claim 1, wherein the feedstock contains 2-6 wt% of palm fibers based on the weight of the feedstock excluding water, and wherein the palm fibers have a fiber length in the range of 3mm to 9 mm.
6. The fire-protective green insulating core sheet of claim 1, wherein 30-70% of the palm fibers have a fiber length of 2-6mm, 5-40% have a fiber length of 7-9mm, and 3-30% have a fiber length of 10-15 mm.
7. The fire protective green insulating core material sheet according to any one of claims 1 to 6, wherein the palm fibres are from oil palm kernel residue obtained after extraction of palm oil and the palm fibres have a water content of less than 20% and an oil content of less than 15%.
8. The fire protective green insulating core material sheet as claimed in any one of claims 2 to 4, wherein the coal ash contains SiO2、Al2O3、Fe2O3And CaO, and wherein the CaO content does not exceed 10 wt%.
9. The fire-resistant green thermal insulation core material plate according to any one of claims 2 to 8, wherein the coal ash is class F fly ash specified in Chinese national Standard GB/T1596-2005.
10. The fire-resistant green thermal insulation core material sheet as claimed in any one of claims 2 to 9, wherein the slag is blast furnace slag complying with the S95 grade specified in the chinese national standard GB/T18046-2008.
11. The fire protective green insulating core sheet of any one of claims 2 to 10, wherein the hydrogen peroxide is 20 to 60 wt% aqueous hydrogen peroxide; and the sodium silicate is an aqueous sodium silicate dispersion having a solids content of 20-40 wt%.
12. The fire protective green insulating core board of claim 11, wherein the aqueous sodium silicate dispersion is a liquid sodium silicate that meets the "liquid-2" model specified in the chinese national standard GB/T4209-2008.
13. The fire-resistant green insulating core panel of any one of claims 1-12, wherein the coal ash is coal ash from coal fired power stations, the slag is steel mill produced slag, and the palm fiber is from oil palm fruit residue obtained after palm oil extraction.
14. The environmentally friendly method of making a high strength ultra light fire protective green insulating core material sheet of any one of claims 1 to 13, the method comprising the step of mixing palm fiber with other raw materials; wherein the feedstock contains 0.1-10 wt.% palm fibres based on the weight of the feedstock excluding water, and wherein the palm fibres have a fibre length in the range 2mm to 15 mm.
15. The method of claim 14, wherein the method comprises the steps of:
a) mixing water, active powder, a hardening agent, a foam stabilizer, palm fiber and optional functional additives at the rotation speed of 400-800rpm until homogenization, wherein the weight ratio of the water to the raw materials except water is 1: 50 to 1: 2;
b) adding a foaming agent to the mixture of a) for 7-20 seconds at a rotation speed of 700 and 1000rpm to generate a pore structure;
c) pouring the mixture of b) into a container mold and curing for 1-12 hours;
d) demolding and cutting the cured board of c) to the desired size, and
e) continuing to cure the cut plate of d) for 1-30 days;
wherein the raw materials except water comprise active powder, a hardening agent, a foaming agent, a foam stabilizer and optional functional additives; and wherein
The active powder is selected from three or more of slag, coal ash, silica fume and metakaolin;
the hardener is selected from two or more of sodium silicate, potassium hydroxide and sodium hydroxide;
the foaming agent is selected from one or more of hydrogen peroxide and aluminum powder;
the foam stabilizer is selected from one or more of calcium stearate and silicone amide; and
the optional functional admixture is selected from one or more of a water reducing agent, a retarder and a pigment.
16. The method of claim 15, wherein said step b) is performed at a temperature in the range of 15-35 ℃; step c) is carried out within the temperature range of less than or equal to 100 ℃; and the step c) is solidified in the humidity range of more than or equal to 50 percent; and when the mixture of step c) is sampled to 160-270kg/m3When the density is within the range, step d) is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2018108699525 | 2018-08-01 | ||
| CN201810869952.5A CN110790583A (en) | 2018-08-01 | 2018-08-01 | High-strength ultra-light fireproof green heat insulation board, preparation method thereof and wall system |
| PCT/CN2019/090983 WO2020024704A1 (en) | 2018-08-01 | 2019-06-12 | A high-strength ultra-light weight fireproof green thermal insulation core material board and the eco-friendly manufacturing process |
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| CN112292362A true CN112292362A (en) | 2021-01-29 |
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| CN201810869952.5A Pending CN110790583A (en) | 2018-08-01 | 2018-08-01 | High-strength ultra-light fireproof green heat insulation board, preparation method thereof and wall system |
| CN201980037141.1A Pending CN112292362A (en) | 2018-08-01 | 2019-06-12 | High-strength ultralight fireproof green heat-insulation core material plate and preparation method thereof |
| CN201980037009.0A Pending CN112313185A (en) | 2018-08-01 | 2019-07-31 | High-strength ultra-light fireproof green heat-insulation geopolymer plate, environment-friendly preparation method thereof and product thereof |
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| CN201810869952.5A Pending CN110790583A (en) | 2018-08-01 | 2018-08-01 | High-strength ultra-light fireproof green heat insulation board, preparation method thereof and wall system |
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| CN201980037009.0A Pending CN112313185A (en) | 2018-08-01 | 2019-07-31 | High-strength ultra-light fireproof green heat-insulation geopolymer plate, environment-friendly preparation method thereof and product thereof |
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| CN (3) | CN110790583A (en) |
| PH (1) | PH12021550219A1 (en) |
| WO (2) | WO2020024704A1 (en) |
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| US11255052B1 (en) | 2020-09-30 | 2022-02-22 | United Arab Emirates University | Thermal insulating material made from date palm surface fibers |
| CN112652782B (en) * | 2020-12-09 | 2021-12-21 | 广东至道先进土木工程材料技术研究有限公司 | Environment-friendly geopolymer battery and preparation method thereof |
| CN114634336A (en) * | 2020-12-16 | 2022-06-17 | 湖南登科材料科技有限公司 | Wall thermal insulation material prepared from straw and preparation method thereof |
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2019
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- 2019-06-12 CN CN201980037141.1A patent/CN112292362A/en active Pending
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| Publication number | Publication date |
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| PH12021550219A1 (en) | 2021-10-11 |
| WO2020024975A1 (en) | 2020-02-06 |
| WO2020024704A1 (en) | 2020-02-06 |
| CN112313185A (en) | 2021-02-02 |
| CN110790583A (en) | 2020-02-14 |
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