WO2018216932A1 - Procédé de fabrication de produit moulé en mousse - Google Patents

Procédé de fabrication de produit moulé en mousse Download PDF

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WO2018216932A1
WO2018216932A1 PCT/KR2018/005403 KR2018005403W WO2018216932A1 WO 2018216932 A1 WO2018216932 A1 WO 2018216932A1 KR 2018005403 W KR2018005403 W KR 2018005403W WO 2018216932 A1 WO2018216932 A1 WO 2018216932A1
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weight
parts
bottom ash
solidifying agent
liquid
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PCT/KR2018/005403
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English (en)
Korean (ko)
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조그렉
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조그렉
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/241—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening using microwave heating means
    • 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
    • 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
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • 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
    • C04B28/006—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 containing mineral polymers, e.g. geopolymers of the Davidovits type
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0093—Other features
    • 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
    • C04B2111/40—Porous or lightweight materials
    • 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
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • 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

Definitions

  • the present invention relates to a process for producing a foamed molded product using bottom ash (and / or fly ash) as a main raw material.
  • a solid solidifying agent in solid form is mixed with the bottom ash (and / or fly ash), and then a liquid additive is further mixed and poured into a silicone mold made of silicon, cured for 10 to 30 minutes, and demolded by a heat dryer. It relates to a method for producing a foamed molded product by heat treatment and drying at.
  • the present invention is a method for producing a foamed molded article that can be used while the bottom ash (and / or fly ash), while reducing the use of separate additives such as admixtures, while maintaining the foamability and suctionability to provide a foamed molded article It is about.
  • the inorganic foamed molded article is generally prepared by adding a foaming agent to the inorganic powder slurry to form a porous foamed slurry and dry sintering it to prepare a foamed cured body.
  • a foaming agent for example, Japanese Patent Application Laid-Open No. 2005-320188 (Patent Document 1) adds iron oxide, silicon carbide, and carbon to a municipal waste incineration ash as a blowing agent and calcinates at 1000 to 1250 ° C. to prepare an inorganic foamed molded article.
  • Patent Document 2 discloses a method of manufacturing a molded article by mixing powder pulverized with shells of an inorganic waste material, heating to 850-1100 ° C. to melt foaming. Is disclosed.
  • Such inorganic foams are used for light porous porous aggregates used for microbial carriers or agricultural and horticultural improvement materials or for construction and civil engineering.
  • Such a method for producing a fired foam at high temperature is excellent in physical properties, but the economical efficiency is often a problem due to excessive energy costs compared to the value added of the product.
  • Patent Document 3 Korean Patent Publication No. 10-0760040
  • Patent Document 4 Korean Patent Publication No. 10-0785652
  • Disclosed is a method of preparing a foamed ceramic by mixing a suitable amount of a silicate blowing agent and an additive, slurrying the same, and foaming the same, and then heating the same at 80 to 250 ° C. for about 2 hours.
  • this method has a weak strength of the molded body to add fiber and resin as an additive to reinforce it, and there is a disadvantage that it is difficult to decompose naturally by the addition of organic material when discarded after use.
  • Patent Document 5 discloses a method of manufacturing a non-flammable foam insulation by combining metasilicate, alumina cement, metaphosphate, sodium carbonate and water, but the insulation prepared by this method is compressed The strength is only about 2.5 to 3.8 kg / cm 2, which makes it difficult to use as a structural material.
  • Patent Document 6 discloses a method for producing lightweight aggregate by mixing at a relatively low temperature (200 ⁇ 300 °C) by mixing sodium silicate, clay, waste concrete, calcium oxide, cement, etc. However, this method uses too much sodium silicate in the range of 75-95%, which causes economic problems.
  • Patent Document 7 Japanese Unexamined Patent Publication No. 2008-162873
  • Patent Document 8 Japanese Unexamined Patent Application Publication No. 2007-161559
  • Patent Document 9 Japanese Patent Application Laid-Open No. 2006-231311
  • the compressive strength of the foam according to the present method is unsuitable for use as a building plate or structural member requiring a high strength of 100 kg / cm 2 or more, such as 40 to 50 kg / cm 2, and the use of sodium silicate is too excessive, resulting in economical problems.
  • high-strength, high-intensity sound-absorbing and shock-absorbing inorganic foamed molded articles are very marketable for materials such as wall materials, flooring materials, ceiling materials, and road sound-absorbing walls of buildings.
  • materials such as wall materials, flooring materials, ceiling materials, and road sound-absorbing walls of buildings.
  • the development of a competitive product or a substitute is necessary.
  • Patent Document 10 the Republic of Korea Patent Publication No. 10-1646155
  • the above technique is to provide a lightweight foamed molding, and more particularly, a composition comprising a fly ash for producing a porous lightweight foamed molding, consisting of 50 to 80% by weight of fly ash and 20 to 50% by weight of alkali silicate Disclosed is a composition for preparing fly ash lightweight foamed molded article comprising 4 to 8 parts by weight of alkali hydroxide, 1 to 5 parts by weight of acid, 1 to 5 parts by weight of strength reinforcing material, and 1 to 10 parts by weight of water.
  • the present invention relates to a method for producing a porous lightweight foamed molded article using the composition and to a foamed molded article thereof, and more particularly to a method for manufacturing a lightweight foamed molded article using a porous fly ash excellent in high strength, high heat resistance, heat insulation and sound absorption.
  • An object of the present invention is to prepare a foamed molding product using bottom ash (and / or fly ash) as a main raw material, and then, after solidifying solidifying agent in solid form with bottom ash (and / or fly ash), a liquid additive The mixture is poured into a silicone mold made of silicon, cured for 10 to 30 minutes, demolded and heat-treated in a heat dryer to provide a foamed molded product.
  • the first mixing step is characterized in that 0.5 to 3.0 parts by weight of the solidifying agent based on 100 parts by weight of the bottom ash.
  • the liquid treatment agent of the secondary mixing step is characterized in that the liquid solidifying agent.
  • the liquid solidifying agent is characterized in that it is mixed in a mixture of the bottom ash and the solidifying agent by 5 to 30 parts by weight based on 100 parts by weight of the bottom ash.
  • the first mixing step is characterized in that 0.5 to 3.0 parts by weight of the solidifying agent based on 100 parts by weight of the bottom ash.
  • the liquid treatment agent of the second mixing step is characterized in that the liquid inorganic binder.
  • the liquid inorganic binder is characterized in that it is mixed in a mixture of the bottom ash and the solidifying agent by 5 to 30 parts by weight based on 100 parts by weight of the bottom ash.
  • the liquid inorganic binder is characterized in that 10 parts by weight of the curing regulator is mixed with respect to 100 parts by weight of the inorganic binder.
  • the curing regulator is based on 100 parts by weight of nitrogen in the reaction tank filled with nitrogen, 45 to 70 parts by weight of dehydrated glycerol, 0.3 to 0.6 parts by weight of zinc acetate (Zincacetate) and 0.3 to magnesium oxide (Magnesium oxide)
  • acetic anhidride was added based on 100 parts by weight of nitrogen in a state where the temperature in the reactor was increased to 170 to 190 ° C. to prepare an esterification reaction. It is characterized by.
  • the inorganic binder is added to the liquid sodium silicate in a reactor rotating at 20 ⁇ 200RPM at a temperature of 20 ⁇ 40 °C slowly added acid solution, stirred for 1 hour to produce a silicate containing crystallized sodium salt , Water is added to 20 to 30 parts by weight based on the total weight, and then stirred at 20 to 40 °C for 3 hours to dissolve the sodium salt, and further select one of salts, oxides and hydroxides containing alkaline earth metals Prepared by addition,
  • the acid solution is acetic acid, the acetic acid is added 5 to 10 parts by weight based on 100 parts by weight of sodium oxide contained in the liquid sodium silicate,
  • Salts, oxides and hydroxides containing the alkalido metal are prepared by adding 0.1 to 0.5 parts by weight based on the total weight of the inorganic binder.
  • the mold is a silicone mold
  • the curing step is performed for 10 to 30 minutes by applying a microwave wave to the silicon mold, so that the microwave wave is delivered to the entire surface of the mixture filled in the mold by the silicon mold It is characterized by.
  • the heat drying step is characterized in that the temperature of the heat dryer to 120 to 150 °C heat drying for 1 hour.
  • the heat drying step is characterized in that the temperature of the heat dryer to 140 °C heat drying for 1 hour.
  • the method for producing a foamed molded article according to the present invention it is possible to produce a foamed molded article having a relatively low strength (compressive strength of 100kgf) and a foamed molded article having a high strength (120kgf).
  • the present invention can manufacture a substitute having superior strength than the foamed molded article (80 ⁇ 95kgf) according to the registered patent application No. 10-1646155, which is registered and secured by the applicant.
  • Figure 1 shows the flow of the manufacturing method of the foamed molded product according to the present invention.
  • the present invention relates to a method for producing a foamed molded product using bottom ash (and / or fly ash) as a main raw material, and a foamed molded product produced by the method.
  • Figure 1 shows the flow of the manufacturing method of the foamed molded product according to the present invention.
  • the bottom ash (and / or fly ash) is a solid solidifying agent in the form of a solid, and then a liquid additive is further mixed and poured into a silicone mold made of silicon 10 to 10
  • the present invention relates to a method for producing a foamed molded product by curing for 30 minutes, demolding, and drying by heat treatment in a heat dryer.
  • the present invention is to produce a foamed molded article by the above process, it is possible to produce a foamed molded article having a relatively low strength (compressive strength of 100kgf) and a foamed molded article having a high strength (120kgf), the present invention is It is confirmed that the foam molded article according to the applicant's No. 10-1646155 (80 ⁇ 95kgf) has a higher strength, and further secured by the right.
  • bottom ash (and / or fly ash) described in each embodiment may be carried out after a variety of pre-treatment, may be used by grinding as an example,
  • the water content may be increased by immersion in water and pulverization to adjust the physical strength of the final molded foam. Soaking in water may allow the bottom ash (and / or fly ash) to be completely submerged in water for 20 minutes in a confined space.
  • the primary mixing step is a step of mixing the solidifying agent in the bottom ash (and / or fly ash).
  • the mixing employs a conventional mixing method such as a stirrer and a mixer, and specifically, 0.5 to 3.0 parts by weight of the solidifying agent is mixed with 100 parts by weight of the bottom ash (and / or fly ash).
  • the solidifying agent is foamed to 5 parts by weight, 30 parts by weight and 18 parts by weight of the intermediate based on 100 parts by weight of the bottom ash (and / or fly ash), the solidifying agent is a bottom ash ( And / or fly ash) it was found that foaming did not occur when less than 0.5 parts by weight or more than 3.0 parts by weight based on 100 parts by weight.
  • the solidifying agent is less than 0.5 parts by weight, it is confirmed that it is impossible to solidify because the content is too small compared to the bottom ash (and / or fly ash) and the liquid treatment agent, when the solidifying agent exceeds 3.0 parts by weight, too thick It was confirmed that the solidified as it is not foamed.
  • the bottom ash is sifted as it is discarded in the coal-fired power plant as it is used to form a particle size of 0.1mm or less.
  • Fly ashes are also defined as inorganic oxides that remain after incineration or combustion. Most of fly ash is generated from coal-fired power plants, as well as from coal incineration in waste incinerators, cogeneration plants and other industrial sites.
  • the composition of the fly ash is mainly SiO 2 , Al 2 O 3 , Fe 2 O 3 It consists of inorganic oxides, such as amorphous, and a small amount of crystalline metal oxides, such as amorphous or quartz, iron oxide, mullite, may be produced
  • fly ash generated in large quantities in coal-fired power plants the typical chemical composition of the fly ash generated in the thermal power plants with spherical particles having a particle size of about 50 ⁇ m or less is shown in Table 2. At this time, if the fly ash contains a particle size of 50 ⁇ m or more, it can be used by grinding to satisfy the particle size of 50 ⁇ m or less if necessary.
  • the alkali silicate is sodium silicate having a molar ratio of SiO 2 / (Na, K) 2 O in a range of 1.5 to 3.5 and a water content of 40 to 60 wt% (Na 2 SiO 3 nH 2 O ) Or an aqueous solution of potassium silicate (K 2 SiO 3 nH 2 O), and if necessary, a small amount of water may be added to adjust the viscosity of the slurry, wherein the water is 2.5 to 20 weight based on the total amount of alkali silicate. Preference is given to adding%.
  • the solidifying agent is formed by adding potassium aluminum sulfate to sodium silicate to form an aluminum silicate dispersion, and then adding sodium phosphate salt and sodium hydroxide to the aluminum silicate dispersion, applying heat to solution, and crystal nuclei are formed. It is prepared by cooling and maturing, then filtering or dehydrating to produce aluminum phosphate silicate.
  • Such a solidifying agent is omitted in the geopolymer production method and geopolymer using silicate described in Korean Patent Publication No. 10-1078335.
  • a liquid treatment agent is mixed with a mixture of bottom ash (and / or fly ash) and a solidifying agent mixed through the first mixing step.
  • the liquid treating agent becomes a liquid hardening agent
  • the liquid hardening agent is mixed with 5 to 30 parts by weight based on 100 parts by weight of the bottom ash.
  • the liquid hardener is a recycled waste glass that is produced and supplied in various glass industries and used for construction, industry, and living, and then disposed of.
  • the waste glass was washed with water, dried and pulverized. Then, an alkali component was added to the pulverized waste glass to adjust the blending. The waste glass was blended and adjusted at 60 to 80 rpm at a pressure of 15 to 20 kgf / cm 2 to dissolve. Get it.
  • the mixture mixed up to the second mixing step is added to the silicone mold and cured for 10 to 30 minutes.
  • the curing is applied to the microwave wave to the silicon mold to vibrate the moisture to generate heat as the heat is generated due to friction between the particles to allow the foaming to proceed.
  • the reason for using a silicon mold is to ensure that the microwave wave is well transmitted to the entire surface of the mixture filled in the mold. If the material of the mold is used other than silicon, the microwave wave is blocked and cured. Is not smooth.
  • the foam is demolded from the silicone mold, and then heat-treated through a heat dryer to perform drying.
  • the heat dryer is to have a temperature of 120 to 150 °C, and performs the heat drying for 1 hour.
  • the heat dryer is more specifically designed to have a temperature of 140 ° C.
  • the compressive strength of the foam is 76 kgf, which indicates that drying of moisture remaining in the foam after the curing step It is thought that the compressive strength is lowered because it is not all.
  • thermal drying at 151 ° C. above 150 ° C. revealed cracks on the surface of the foam.
  • the reason for limiting the heat dryer temperature to 120 to 150 °C is to have a compressive strength of at least 95kgf, it was found to have the highest compressive strength of 100kgf at a temperature of 140 °C. Specifically, it is shown in [Table 3] below.
  • the compressive strength of the foam was the highest at the heat dryer temperature of 140 °C.
  • the primary mixing step is a step of mixing the solidifying agent in the bottom ash (and / or fly ash).
  • the mixing employs a conventional mixing method such as a stirrer and a mixer, and specifically, 0.5 to 3.0 parts by weight of the solidifying agent is mixed with 100 parts by weight of the bottom ash (and / or fly ash).
  • the solidifying agent is foamed to 5 parts by weight, 30 parts by weight and 18 parts by weight of the intermediate based on 100 parts by weight of the bottom ash (and / or fly ash), the solidifying agent is a bottom ash ( And / or fly ash) it was found that foaming did not occur when less than 0.5 parts by weight or more than 3.0 parts by weight based on 100 parts by weight.
  • the bottom ash is sifted as it is discarded in the coal-fired power plant as it is used to form a particle size of 0.1mm or less.
  • Fly ashes are also defined as inorganic oxides that remain after incineration or combustion. Most of fly ash is generated from coal-fired power plants, as well as from coal incineration in waste incinerators, cogeneration plants and other industrial sites.
  • the composition of the fly ash is mainly SiO 2 , Al 2 O 3 , Fe 2 O 3 It consists of inorganic oxides, such as amorphous, and a small amount of crystalline metal oxides, such as amorphous or quartz, iron oxide, mullite, may be produced
  • fly ash which occurs in large quantities in coal-fired power plants, is a typical chemical composition of fly ash generated in thermal power plants with spherical fine particles having a particle size of about 50 ⁇ m or less. At this time, if the fly ash contains a particle size of 50 ⁇ m or more, it can be used by grinding to satisfy the particle size of 50 ⁇ m or less if necessary.
  • the alkali silicate is sodium silicate having a molar ratio of SiO 2 / (Na, K) 2 O in a range of 1.5 to 3.5 and a water content of 40 to 60 wt% (Na 2 SiO 3 nH 2 O ) Or an aqueous solution of potassium silicate (K 2 SiO 3 nH 2 O), and if necessary, a small amount of water may be added to adjust the viscosity of the slurry, wherein the water is 2.5 to 20 weight based on the total amount of alkali silicate. Preference is given to adding%.
  • the solidifying agent is formed by adding potassium aluminum sulfate to sodium silicate to form an aluminum silicate dispersion, and then adding sodium phosphate salt and sodium hydroxide to the aluminum silicate dispersion, applying heat to solution, and crystal nuclei are formed. It is prepared by cooling and maturing, then filtering or dehydrating to produce aluminum phosphate silicate.
  • Such a solidifying agent is omitted in the geopolymer preparation method and the geopolymer using the silicate described in Patent Publication No. 10-1078335.
  • a liquid treatment agent is mixed with a mixture of bottom ash (and / or fly ash) and a solidifying agent mixed through the first mixing step.
  • the liquid treatment agent is a liquid inorganic binder
  • the liquid inorganic binder is mixed 5 to 30 parts by weight based on 100 parts by weight of the bottom ash (and / or fly ash).
  • the liquid inorganic binder is a mixture of 10 parts by weight of a curing regulator with respect to 100 parts by weight of an inorganic binder,
  • the curing regulator is based on 100 parts by weight of nitrogen in a nitrogen filled reactor, 45 to 70 parts by weight of dehydrated glycerol, 0.3 to 0.6 parts by weight of zinc acetate and 0.3 to 0.6 parts by weight of magnesium oxide. After mixing, the reaction mixture was prepared by adding 25 to 55 parts by weight of acetic anhidride based on 100 parts by weight of nitrogen in a state in which the temperature in the reaction vessel was increased to 170 to 190 ° C. ,
  • liquid sodium silicate is added to a reactor rotating at 20 to 200 RPM at a temperature of 20 to 40 ° C., and an acid solution is gradually added, followed by stirring for 1 hour to produce a siliceous product including crystallized sodium salt.
  • 20 to 30 parts by weight of the total weight is added, followed by stirring at 20 to 40 ° C. for 3 hours to dissolve the sodium salt, and further adding alkaline earth metals such as calcium carbonate, calcium nitrate, magnesium chloride, magnesium sulfate and calcium hydroxide.
  • alkaline earth metals such as calcium carbonate, calcium nitrate, magnesium chloride, magnesium sulfate and calcium hydroxide.
  • the acid solution added to the liquid sodium silicate is acetic acid, the acetic acid is added so that 5 to 10 parts by weight of sodium oxide contained in the liquid sodium silicate, based on 100 parts by weight,
  • Salts, oxides and hydroxides containing the alkali metal are prepared by adding 0.1 to 0.5 parts by weight based on the total weight of the inorganic binder.
  • the mixture mixed up to the second mixing step is added to the silicone mold and cured for 10 to 30 minutes.
  • the curing is applied to the microwave wave to the silicon mold to vibrate the moisture to generate heat as the heat is generated due to friction between the particles to allow the foaming to proceed.
  • the reason for using a silicon mold is to ensure that the microwave wave is well transmitted to the entire surface of the mixture filled in the mold. If the material of the mold is used other than silicon, the microwave wave is blocked and cured. Is not smooth.
  • the foam is demolded from the silicone mold and then heat-treated through a heat dryer to perform drying.
  • the heat dryer is to have a temperature of 120 to 150 °C, and performs the heat drying for 1 hour.
  • the heat dryer is more specifically designed to have a temperature of 140 ° C.
  • thermal drying at 151 ° C. above 150 ° C. revealed cracks on the surface of the foam.
  • the reason for limiting the heat dryer temperature to 120 to 150 ° C is to have a compressive strength of at least 95 kgf, and to have a relatively high strength foam compared to Example 1, so as to have a compressive strength of 100 kgf.
  • Example 1 low intensity
  • Example 2 high strength
  • Compressive strength Up to 95kgf 100kgf 120kgf
  • Water resistance Water content 12% Water content 5%
  • Water content 4% durability normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal
  • the compressive strength did not change with the solidifying agent content.
  • the solidifying agent is 0.5 to 3.0 parts by weight based on 100 parts by weight of the bottom ash, it was found that no pores were formed in the formed foam when the amount of the liquid treatment agent exceeded 30 parts by weight (common).
  • the liquid treatment agent liquid inorganic binder
  • the solidifying agent is 0.5 to 3.0 parts by weight based on 100 parts by weight of the bottom ash, it was found that no pores were formed in the formed foam when the amount of the liquid treatment agent exceeded 30 parts by weight (common).
  • the experimental group was not foamed according to the content of the solidifying agent, there was a problem that even if the foam does not have a compressive strength of 120kgf or more, which is the high-strength compressive strength required by the applicant.
  • the present invention can provide a foamed molded article having excellent sound absorbing properties compared to the Patent No. 10-1646155 of the present applicant.

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Abstract

La présente invention concerne un procédé de fabrication d'un corps moulé en mousse à l'aide de cendres résiduelles (et/ou de cendres volantes) en tant que matière première principale. Plus particulièrement, la présente invention concerne un procédé de fabrication d'un corps moulé en mousse par mélange d'un agent de solidification en phase solide avec des cendres résiduelles (et/ou des cendres volantes), ajout d'un additif en phase liquide au mélange, puis par versement dans un moule en silicone formé de silicone, durcissement pendant 10 à 30 minutes, démoulage, puis séchage par traitement thermique dans un séchoir à chaleur.
PCT/KR2018/005403 2017-05-22 2018-05-10 Procédé de fabrication de produit moulé en mousse WO2018216932A1 (fr)

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KR10-2017-0062731 2017-05-22
KR1020170062731A KR101892391B1 (ko) 2017-05-22 2017-05-22 바텀애시 발포성형체의 제조방법

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10759697B1 (en) 2019-06-11 2020-09-01 MSB Global, Inc. Curable formulations for structural and non-structural applications
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