Classifications

• • 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
  • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
  • C04B14/02—Granular materials, e.g. microballoons
  • C04B14/04—Silica-rich materials; Silicates
• • 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
  • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
  • C04B14/38—Fibrous materials; Whiskers
• • 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
  • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
  • C04B14/38—Fibrous materials; Whiskers
  • C04B14/42—Glass
• • 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
  • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
  • C04B24/24—Macromolecular compounds
• • 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
  • C04B28/18—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 mixtures of the silica-lime type

Definitions

• the present invention relates to a resin-mixed nonflammable calcium silicate molded article.
• Calcium silicate molded products are used in various fields such as interior base materials, artificial woods, construction materials, housing equipment, and carbon fiber product molding formwork base materials.
• artificial wood composed of a calcium silicate molded body used as a formwork material lacks heat resistance, dimensional stability, and uniform machinability, which are the drawbacks of wood used as a formwork material. It has been used conventionally as a material to supplement.
• Patent Document 1 comprises 100 parts by weight of calcium silicate hydrate, 5 to 30 parts by weight of a styrene-butadiene copolymer latex containing a carboxyl group (as a solid content), a cationic polymer flocculant and water.
• the calcium silicate molded product (paragraph 1) obtained by molding and drying an aqueous slurry is disclosed, and it is also disclosed that the aqueous slurry contains reinforcing fibers such as glass fibers.
• Patent Document 2 describes a zonotrite-based calcium silicate molded product from the composition of 60 to 94 parts by weight of zonotrite-based calcium silicate hydrate, 5 to 30 parts by weight of styrene-butadiene copolymer, and 1 to 10 parts by weight of glass fiber.
• a model material (claim 1) characterized by being formed is disclosed.
• Patent Document 3 describes 1 to 30 parts by weight of reinforcing fibers and 1 to 40 parts by weight of latex with respect to 100 parts by weight of a mixture of 70 to 99 parts by weight of calcium silicate hydrate and 1 to 30 parts by weight of wallastonite.
• a calcium silicate molded body (claim 1) obtained by molding and drying a calcium silicate hydrate slurry composition composed of 1 to 15 parts by weight of an expansion material and water is disclosed, and glass fibers can be used as reinforcing fibers. It is specifically disclosed.
• the expansion material is a substance that reacts with water to produce gypsum, and is selected from the group consisting of K type, M type and S type in the classification of ACI.
• At least one swelling agent calcium sulfate-based clinator alone or a mixture with gypsum, a mixture of aluminate-based clinker and gypsum, blast furnace slag powder or a substance containing aluminum hydroxide, gypsum, slaked lime or a mixture of fresh lime. , A mixture of alumina cement and gypsum, etc. can be used.
• Patent Document 4 describes a mold base material for CFRP molding containing (A) calcium silicate hydrate as a binder, (B) glass fiber, and (C) an inorganic filler containing a sliding material.
• the CaO / SiO 2 molar ratio of the calcareous raw material and the silicic acid raw material constituting the calcium silicate hydrate as a binder is in the range of 0.7 to 1.2, and the total content of the calcareous raw material and the siliceous raw material is contained.
• the amount is 40 to 89% by mass with respect to the total solid content
• the content of glass fiber is 1 to 10% by mass with respect to the total solid content
• the content of the inorganic filler is 10 to 59% by mass with respect to the total solid content.
• the mold base material for CFRP molding (claim 1), which has a slip material content of 0.1 to 20% by mass based on the total solid content and a bulk density of 0.6 to 1.1. It is also disclosed that talc can be used as the slip
• Patent Document 5 is a calcium silicate molded product obtained by molding and drying a calcium silicate hydrate slurry produced by mixing water with a mixture containing a calcareous raw material and a siliceous raw material and performing a hydrothermal reaction.
• a calcium silicate molded product (claim 1) in which microcapsules containing a functional substance having at least one action selected from aromatic action, deodorant action, antibacterial action and insect repellent action are dispersed. It is disclosed that inorganic fibers such as glass fibers and polymer binders such as styrene-butadiene copolymer can be used as reinforcing materials.
• Reference 6 is a slurry solid content of 100 parts by weight of calcium silicate hydrate having a sedimentation volume of 10 ml / g or more, 3 to 15 parts by weight of styrene / butadiene latex, and a freeness of 350 ml or less.
• a cationic latex fixing agent is mixed with 1 to 20% by weight of the styrene / butadiene latex weight and water to obtain a slurry having a solid content concentration of 0.5 to 4% by weight, and the slurry is injected into a fabrication bat.
• a method for producing a calcium silicate-polymer composite plate (claim 1) is disclosed, wherein an anionic polymer flocculant is further added dropwise in an amount in the range of 20 to 10000 ppm in the solid content of the slurry to produce a calcium silicate polymer composite plate. Has been done.
• Patent Document 7 is a calcium silicate molded body obtained by molding a slurry consisting of 100 parts by weight of calcium silicate, 2 to 8 parts by weight of reinforcing fibers, 3 to 9 parts by weight of latex and 1 to 6 parts by weight of fibrous dispersant.
• Claim 1) is disclosed, the reinforcing fiber is glass fiber, and pulp is used as a fibrous dispersant.
• Resin-mixed calcium silicate molded body (claim 1), which contains 1 to 10% by mass of glass fibers and contains 0.5 to 3% by mass of a flocculant in an outer ratio; inorganic fibrous particles.
• Japanese Unexamined Patent Publication No. 60-246251 Japanese Unexamined Patent Publication No. 5-246752 Japanese Unexamined Patent Publication No. 8-12409 JP-A-2017-132670 Japanese Unexamined Patent Publication No. 10-251052 Japanese Unexamined Patent Publication No. 1-224253 Japanese Unexamined Patent Publication No. 6-234559
• the calcium silicate molded product disclosed in Patent Document 1 has improved strength as compared with an inorganic calcium silicate molded product having the same density, but has moldability, machinability and angle resistance. There is a problem with chipping.
• the model material disclosed in Patent Document 2 is intended to cope with an increase in the size of a molded product by blending glass fiber, but has problems in machinability and corner chipping resistance.
• the calcium silicate molded product disclosed in Patent Document 3 has improved machinability and corner chipping resistance by blending wollastonite, but the moldability is not sufficient, and today's Further improvement is required due to the increasing demand for precision machining.
• the mold base material for CFRP molding disclosed in Patent Document 4 has improved machinability and angle chipping resistance, but at a higher temperature region than the resin-mixed calcium silicate molded product of the present invention. Since it is intended for repeated use, a moist heat curing process using an autoclave is required, and it is necessary to increase the density in order to obtain the required strength, resulting in a heavier weight than the resin-mixed calcium silicate molded product. There is a problem.
• Cited Document 5 discloses a calcium silicate molded body in which the effect of a functional substance having an action such as aroma is not impaired even if processing such as cutting or cutting is performed, but the moldability is not sufficient.
• Patent Document 6 discloses a method for producing a calcium silicate / polymer composite plate for the purpose of improving productivity, strength, and processability. However, it is a production method by a manufacturing method, and flammable pulp is used as a raw material thereof. It is used as.
• Patent Document 7 discloses a calcium silicate molded body having water resistance, fire resistance and sufficient bending strength, but a flammable fibrous dispersant and latex are used in combination.
• an object of Japanese Patent Application No. 2019-182649 is to provide a resin-mixed calcium silicate molded body which can obtain high specific strength, has a small heat shrinkage rate, and is excellent in cutting surface accuracy and workability.
• the resin-mixed calcium silicate molded product of Japanese Patent Application No. 2019-182649 contains 5 to 20% by mass of latex.
• the resin-mixed calcium silicate molded body containing 5 to 20% by mass of latex causes a problem in nonflammability, which is a required performance, when it is used as a building material, particularly as an interior building material as artificial wood.
• an object of the present invention is to provide a resin-mixed nonflammable calcium silicate molded product which can obtain high specific strength and has a good balance between moldability, cutting surface accuracy, workability and nonflammability.
• the resin-mixed non-flammable calcium silicate molded product of the present invention is a resin-mixed non-flammable calcium silicate molded product containing a raw material compound containing zonotrite-based calcium silicate, latex, inorganic fibrous particles and glass fibers, and a flocculant.
• the raw material compound is 65 to 90% by mass of zonotrite-based calcium silicate, 1% by mass or more and less than 5% by mass of latex, 8 to 20% by mass of inorganic fibrous particles, and glass with respect to the total amount of the raw material compound. It is characterized by containing 1 to 10% by mass of fibers and 0.5 to 3 parts by mass of a coagulant with respect to 100 parts by mass of the raw material compound.
• the "total amount of raw material compound” means "total amount of raw material compound (solid content)".
• the resin-mixed nonflammable calcium silicate molded product of the present invention is one or more needle-like particles in which the inorganic fibrous particles are selected from the group consisting of wollastonite, magnesium sulfate, gypsum and calcium carbonate. It is preferable, and it is more preferable that it is wollastonite.
• the average particle size of zonotrite-based calcium silicate is in the range of 20 to 70 ⁇ m.
• the resin-mixed nonflammable calcium silicate molded product of the present invention may further contain 1 to 4% by mass of talc with respect to the total amount of the raw material compound. Further, an artificial wood made of a non-combustible calcium silicate molded product mixed with any of the above resins of the present invention is provided.
• a high specific strength can be obtained, and a resin-mixed nonflammable calcium silicate molded body having a good balance between moldability, cutting surface accuracy, workability and nonflammability can be obtained.
• the resin-mixed nonflammable calcium silicate molded product of the present invention is characterized in that it contains zonotrite-based calcium silicate, latex, inorganic fibrous particles and glass fibers, a flocculant, and optionally talc in a certain ratio.
• the content of zonotrite-based calcium silicate is 65 to 90% by mass, preferably 70 to 85% by mass, more preferably 72, based on the total amount of the raw material compound. It is in the range of ⁇ 85% by mass, more preferably 74 to 85% by mass, still more preferably 74 to 82% by mass, and most preferably 74 to 80% by mass.
• the content of the zonotrite-based calcium silicate is less than 65% by mass, the processability may be lowered, which is not preferable.
• the content of the zonotrite-based calcium silicate exceeds 90% by mass, there is no room for blending other components, and sufficient density and bending strength cannot be obtained, which is not preferable.
• the average particle size of the zonotrite-based calcium silicate is not particularly limited as long as the effect of the present invention is obtained, but the average particle size is preferably in the range of 20 to 70 ⁇ m, more preferably 40 to 65 ⁇ m, and further preferably 40 to 60 ⁇ m. It is within.
• the average particle size of the zonotrite-based calcium silicate is less than 20 ⁇ m, the moldability at the time of producing the resin-mixed nonflammable calcium silicate molded body deteriorates, and it becomes difficult to prepare the molded body. There is.
• the average particle size of the zonotrite-based calcium silicate described in the present specification is determined by laser diffraction / scattering of the zonotrite-based calcium silicate particles using the laser diffraction type particle size distribution measuring device SALD-2200 manufactured by Shimadzu Corporation. It was obtained by particle size distribution measurement.
• the content of latex is 1% by mass or more and less than 5% by mass, preferably 2.0 to 4.8% by mass, based on the total amount of the raw material compound. %, More preferably in the range of 2.5 to 4.8% by mass.
• the content of the latex is less than 1% by mass, it is not preferable because the strength-developing effect cannot be imparted to the resin-mixed nonflammable calcium silicate molded product.
• the latex content is 5% by mass or more, the nonflammability is deteriorated, which is not preferable.
• a latex having an unsaturated carbon bond in the main chain is preferable, and butadiene rubber, chloroprene rubber, styrene / butadiene rubber, styrene rubber, nitrile rubber, butyl rubber and the like can be used, and styrene.
• -It is preferable to use butadiene rubber.
• the content of the inorganic fibrous particles is 8 to 20% by mass, preferably 8 to 18% by mass, more preferably with respect to the total amount of the raw material compound. Is in the range of 9 to 16% by mass, most preferably 10 to 15% by mass.
• the content of the inorganic fibrous particles is less than 8% by mass, the moldability of the resin-mixed nonflammable calcium silicate molded product is significantly reduced, which is not preferable.
• the content of the inorganic fibrous particles exceeds 20% by mass, the cutting surface accuracy and workability of the obtained resin-mixed nonflammable calcium silicate molded product are lowered, which is not preferable.
• the inorganic fibrous particles for example, acicular particles such as wollastonite, magnesium sulfate, gypsum, and calcium carbonate can be used, and wollastonite is preferably used.
• the content of the glass fiber is 1 to 10% by mass, preferably 2 to 8% by mass, and more preferably 3 with respect to the total amount of the raw material compound. It is in the range of ⁇ 6% by mass.
• the content of the glass fiber is less than 1% by mass, sufficient material strength cannot be obtained, which is not preferable.
• the content of the glass fiber exceeds 10% by mass, the cutting surface accuracy and workability of the obtained resin-mixed calcium silicate molded product are lowered, which is not preferable.
• the resin-mixed nonflammable calcium silicate molded product of the present invention may contain talc in the range of 1 to 4% by mass, preferably 1 to 3% by mass, based on the total amount of the raw material mixture.
• talc may adversely affect the moldability, and in particular, when the content of talc exceeds 4% by mass, the moldability may be significantly lowered.
• the raw material formulation of the present invention contains zonotrite-based calcium silicate, latex, inorganic fibrous particles and glass fiber as essential components in the above-mentioned contents, and may further contain talc in the above-mentioned contents.
• the raw material formulation of the present invention may contain components that can be normally contained in the calcium silicate molded product as long as the effects of the present invention are not impaired.
• the raw material formulation of the present invention preferably does not contain flammable raw materials other than latex (for example, pulp described in Patent Document 6, fibrous dispersant described in Patent Document 7, etc.). Further, it is preferable that the leavening agent described in Patent Document 3 is not contained. Therefore, it is preferable that the resin-mixed nonflammable calcium silicate molded product of the present invention contains a raw material compound composed of zonotrite-based calcium silicate, latex, inorganic fibrous particles and glass fiber at the content specified above. ..
• the resin-blended nonflammable calcium silicate molded product of the present invention uses a raw material compound consisting of zonotrite-based calcium silicate, latex, inorganic fibrous particles, glass fiber and talc at the content specified above. Is preferable. That is, the content of each of the raw material formulations of the present invention is adjusted so that the total of zonotrite-based calcium silicate, latex, inorganic fibrous particles and glass fibers is 100% by mass with respect to the total amount of the raw material compound. Is preferable.
• each of the raw material formulations of the present invention is adjusted so that the total of zonotrite-based calcium silicate, latex, inorganic fibrous particles, glass fiber and talc is 100% by mass with respect to the total amount of the raw material compound. It is preferable to adjust.
• the resin-mixed nonflammable calcium silicate molded product of the present invention is 0 with respect to 100 parts by mass of the raw material compound containing the above-mentioned zonotolite-based calcium silicate, latex, inorganic fibrous particles and glass fibers, and optionally talc. It contains 5 to 3 parts by mass, preferably 0.8 to 2.5% by mass of a flocculant.
• the content of the coagulant is less than 0.5 parts by mass with respect to 100 parts by mass of the raw material compound, the effect cannot be exhibited, which is not preferable. Further, even if the content of the coagulant exceeds 3 parts by mass with respect to 100 parts by mass of the raw material compound, it is not preferable because there is no corresponding effect.
• the flocculant is preferably a cationic type, and is a cationic polymer flocculant containing an aliphatic amine having a quaternary ammonium group capable of interacting with the functional group of the latex used as a main component, for example.
• Polydialylamine-based, polyacrylamide-based, polymethylacrylamide-based, polyacrylic acid ester-based, and the like can be used.
• Hymolock registered trademark
• Orflock registered trademark
• Aronflock registered trademark
• Sunflock registered trademark
• an antifoaming agent may be used in order to suppress foaming during production.
• the content of the defoaming agent is not particularly limited as long as the effect of the present invention is not impaired, but is preferably 0.01 to 3 parts by mass and 0.05 to 1 part by mass with respect to 100 parts by mass of the raw material compound. Is more preferable.
• Examples of the defoaming agent that can be used include the SN deformer series manufactured by San Nopco Ltd., the Foam Rex (registered trademark) series manufactured by Nikka Kagaku Co., Ltd., and the Criles (registered trademark) series manufactured by Kurita Water Industries, Ltd.
• the resin-mixed non-combustible calcium silicate molded product of the present invention is obtained. Is 65 to 90% by mass of zonotrite-based calcium silicate, 1% by mass or more and less than 5% by mass of latex, 8 to 20% by mass of inorganic fibrous particles, and 1 to 10% by mass of glass fiber with respect to the total amount of the raw material compound.
• the resin-mixed nonflammable calcium silicate molded product of the present invention contains 65 to 85% by mass of zonotrite-based calcium silicate and 1% by mass or more and less than 5% by mass of latex, 8 by mass, based on the total amount of the raw material compound.
• a raw material compound consisting of ⁇ 20 mass by mass of inorganic fibrous particles, 1 to 10% by mass of glass fiber and 1 part by mass to 4 parts by mass of talc, 0.5 to 3 parts by mass with respect to 100 parts by mass of the raw material compound. It is preferable that the coagulant and the defoaming agent consist of 0.01 to 3 parts by mass with respect to 100 parts by mass of the raw material compound. However, in this case, it is not excluded that the resin-mixed nonflammable calcium silicate molded product of the present invention contains unavoidable impurities derived from the raw material components.
• the unavoidable impurities are preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 1% by mass or less, based on the total amount of the resin-mixed nonflammable calcium silicate molded product of the present invention.
• the method for producing the resin-mixed nonflammable calcium silicate molded body composed of the above-mentioned components is not particularly limited, but can be produced, for example, by pressure dehydration molding using a steel mold. ..
• a raw material slurry was prepared by adding and mixing a flocculant at a ratio shown in Table 1 with respect to 100 parts by mass (solid content) of the raw material mixture.
• the obtained slurry is poured into a steel mold having a width of 300 mm, a length of 300 mm, and a height of 150 mm, and dehydration press molding is performed by pressurizing at a pressure of 5 to 10 N / mm 2 , and then the obtained raw plate is obtained.
• a specimen having a thickness of 10 mm was obtained by drying at 110 to 140 ° C. for 24 hours or more and cutting into a width of 75 mm and a length of 300 mm.
• styrene-butadiene copolymer latex containing a carboxyl group having a glass transition point of 40 ° C. or lower (trade name: styrene-butadiene latex 0696 manufactured by JSR Corporation) was used;
• coagulant a cationic polymer flocculant (trade name: Hymolock Q-700 manufactured by Hymo Co., Ltd.) was used;
• defoaming agent SN Deformer 265 (manufactured by San Nopco Ltd.) was used. The amounts of the flocculant and the antifoaming agent are described with respect to 100 parts by mass of the raw material compound.
• “Moldability” is an index that sensitively evaluates pressure dehydration molding, and indicates that the press pressure is 10 N / mm 2 or less and there is no slurry leakage from the mold. ⁇ , the case where the press pressure exceeds 10 N / mm 2 and a lot of slurry leakage is observed are shown as ⁇ ; "Density” is measured by a method according to JIS A 9510; “Flexural strength” is measured by a method conforming to JIS A 9510; “Specific strength” is the value obtained by dividing the bending strength by the square of the density; “Cutting surface accuracy” is evaluated by the tactile sensation of the cutting surface.
• ⁇ indicates that the cutting surface is smooth and beautiful, and ⁇ indicates that the cutting surface is generally smooth although there is slight roughness. ⁇ indicates that the cut surface is slightly rough, but a smooth surface can be obtained by a simple process such as wiping the surface layer, and ⁇ indicates that the cut surface is rough; “Workability” indicates the ease of processing when the specimen is cut by a general NC router, ⁇ indicates that the resistance during cutting is low and processing is easy, and ⁇ indicates that the specimen can be easily processed. Although there is resistance, it indicates that it can be processed, and ⁇ indicates that surface collapse such as chipping occurs during processing; “Non-flammable” was evaluated by heating for 20 minutes by a cone calorie meter test in accordance with JIS A 5430 (Appendix JA).
• ⁇ indicates that the total calorific value is 6 MJ / m 2 or less. Indicates that the total calorific value exceeds 6 MJ / m 2 and is 8 MJ / m 2 or less, and ⁇ indicates that the total calorific value exceeds 8 MJ / m 2 .
• the resin-mixed nonflammable calcium silicate molded product of the present invention can be used as an artificial wood in various fields such as interior base materials and construction materials.

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• Inorganic Chemistry (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)
• Dry Formation Of Fiberboard And The Like (AREA)
• Compositions Of Macromolecular Compounds (AREA)

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• 2021
  • 2021-12-28 WO PCT/JP2021/048773 patent/WO2022153870A1/ja not_active Ceased
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