Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
  • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
  • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
• • 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
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
  • E04B2001/742—Use of special materials; Materials having special structures or shape
  • E04B2001/745—Vegetal products, e.g. plant stems, barks
• • 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
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A30/00—Adapting or protecting infrastructure or their operation
  • Y02A30/24—Structural elements or technologies for improving thermal insulation
  • Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires

Definitions

• the present invention relates to a novel material for building interior and the manufacturing method thereof. More particularly, the present invention relates to the material for building interior produced by the process comprising: producing the activated carbon from wasted coconut shells by heating in the Rotary kiln over 1,800 °C; mixing the produced activated carbon with natural vegetable aqueous adhesive; cold pressing the mixture; and drying.
• Korean Patent Publication No. 86-1688 disclosed the manufacturing method of boards from rice straw and Korean Utility Model Publication No. 71-1753 relates to the synthetic resin boards.
• the present invention utilize coconut shells which were not used in other objects but only wasting, and which were known as domestic wastes not easily decomposed by microorganisms.
• Ligenous components are mainly cellulose, hemicellulose and lignin, which comprise carbon, oxygen and hydrogen.
• dried coconut shells are rapidly oxidized and decomposed by heating about 280°C and emit gases such as CO 2 , CO, H 2 and CH . Elevating heating temperature up to 650°C ⁇ 700°C, the content of O 2 and H 2 in the emitted gases decreases and the degree of crystallization as activated carbons increases. Besides, heating dried coconut shells over 1,800°C, the black carbide of coconut shells is produced in the shape of crystalline diamond. The higher gets the heating temperature, the larger the content of carbon. According to experiments executed by the present inventors, when heating over 1,800°C, the carbon content of the activated carbon gets to 95% in maximum.
• Carbonized coconut shells have the vesicular structure, in which numerous micropores are formed and thereby have the functions of deodorization, dehumidification and filtration.
• Negatively charged carbide of coconut shells emits a lot of anions and adsorbs cations, by that means it makes the indoor environment comfortable and beneficial to human health.
• the carbide of coconut shells adsorbs noxious electromagnetic waves radiated from various kinds of electronic products and can intercept the man' s disclosure to the noxious electromagnetic waves indoor place.
• Conventionally disclosed and used materials for building interior contain many hazardous chemicals such as carcinogenic xylene, DBP, TOP, decane and so forth.
• coconut shells which are grown at the subtropical zone and the tropical zone, are used.
• the degree of carbonization of the coconut shells is required preferably dry-distilled coal or open-hearth coal carbonized at 400°C ⁇ 500°C, more preferably black coal carbonized at 600°C ⁇ 700°C, and most preferably white coal carbonized over 1,000°C.
• charcoal emits the energy of 6,700cal/g at 400°C, 8,000cal/g at 600°C, and 7,000cal/g over 1,000°C.
• the carbon content of coconut shells at the state of raw material is about 50%, and after carbonization at 400 °C the carbon content gets to 70%, and at 700 °C to 90%, and over 1,000°C to 95%.
• These coconut shell based activated carbon, produced over mesothermen, have the vesicular structure having numerous micropores.
• These activated carbons have the functions of deodorization, dehumidification and filtration, and are very effective in soundproofing, heat insulation, heat conservation and fire-proofing, and have the availability of processing such as nailing and sawing, and are good for interrupting hazardous waves such as electromagnetic wave and waterway wave.
• the present invention has an object to provide a novel material for building interior which is effective in soundproofing, heat insulation, heat conservation and fire-proofing, and which has the availability of processing such as nailing and sawing, and which is good for interrupting hazardous waves such as electromagnetic wave and waterway wave as aforementioned.
• Another object of the present invention is to provide the manufacturing method of said novel material for building interior.
• the present invention provides a material for building interior in the shape of board through the processes comprising: carbonizing coconut shells over mesothermen; grinding the activated carbon produced by carbonizing process; mixing grinded activated carbon with natural vegetable aqueous adhesive; cold pressing the mixture; and drying. And, to accomplish the above objects, the board-type building interior produced through said processes was estimated by various experiments.
• Fig. 1 is a process diagram of the exemplary illustration according to the present invention.
• Fig. 2 is a photograph showing the material for building interior by the process of the present invention.
• the manufacturing process of the novel material for building interior comprises: carbonizing the collected coconut shells over mesothermen; grinding the activated carbon coagula of coconut shells with the hammer-type grinder; mixing natural vegetable aqueous adhesive with grinded activated carbon; cold pressing the mixture; and drying the board-type material for building interior which is molded by cold pressing.
• the carbonized coconut shells have the characteristic of high stiffness and uniform distribution of micropores. After coconut shells are inserted into the Rotary Kiln, heating with paraffin oil burner over 1,800°C, the organic substances in the coconut shells are decomposed.
• the cooled coagula of the coconut shell based activated carbon is very stiff, they are grinded into granules by hammer-type grinder not manually. If required, thereafter the vacuum adso ⁇ tion process may be added, for the purpose of removing the activated carbon dust.
• the natural vegetable aqueous adhesive prepared specially, is mixed with granular activated carbons obtained through said 2 process.
• the specially prepared adhesive is preferably a kind of the natural vegetable aqueous adhesives, which is harmless to man as the building interior.
• the mixing rate of the activated carbon and the aqueous adhesive is preferably 7-8 : 3 ⁇ 2 by weight.
• the aqueous adhesive is prepared by the composition of said activated carbon 4kg, amylopectin 600g, amylose 200g and water(H 2 O) 3kg. Namely, the composition of aqueous adhesive is preferable at the rate of water(H 2 O) 75% ⁇ 85%, amylopectin 10% ⁇ 20%, amylose 1% ⁇ 10% by weight.
• the board-type material for building interior produced by said hot pressing process is dried and solidified with hot blast over 90 °C for 4 hours.
• the product of the present invention is provided for the various experiments.
• coconut shells 10kg were inserted into the Rotary Kiln and heated at 1,800°C for one hour with a paraffin oil burner.
• the carbide coagula of coconut shells 4.5kg, left after heating decomposition, were put into the hammer-type grinder and grinded into granules.
• the Homogenizer uniformly mixed the granular activated carbon 4.5kg with the natural vegetable aqueous adhesive 2kg.
• Example 2 After grinding process of said Example 1, the activated carbon dust was removed from the granular activated carbons with the vacuum adsorber. Because the natural aqueous adhesive is used in the material for building interior of the present invention, noxious gases are not emitted, apart from conventional materials for building interior, and moreover the function of adsorbing noxious gases makes a comfortable indoor environment. As well, the vegetable aqueous adhesive, used in the present invention, is prepared by utilizing the tackiness of amylopectin and the coagulation of amylose and heating at 80 °C in water, so that the adhesive is the - starch pastes in the semitransparent liquid state and convenient for use.
• the water molecules in the mixture of the adhesive and the granular activated carbons are evaporated at the state of hot- pressing over 90 ° C about 5 minutes, and through the retrogradation of starch, due to the cohesion of amylose with amylopectin, the granular activated carbons are solidified, and the regradation of starch is completed by re-drying over 90 ° C .
• the material for building interior of the present invention was heated at 100°C, but noxious gases such as ammonia, sulfur dioxide, hydrogen and so forth were not emitted at all.
• Experiment 6 Effects of deodorization and adsorbing noxious gases. Inserting each 30 cigarette-butts and one loaf of bread into said boxes in experiment 5 and keeping in for 2 days, the bread in the box made of the material of the present invention did not smell at all.
• Experiment 7 Effect of vapor-proofing. After wet cotton spread in two schales and put a nail on each schale, one of the schales was inserted into the box made of the material of the present invention in the experiment 5 and the other into the plaster board box for one week. As the result of estimating the conosion degree of the nails, no rust was observed in the nail kept in the box made of the material of the present invention.
• the present invention provides a novel material for building interior and the manufacturing method thereof.
• the material for building interior of the present invention which is made from coconut shells and natural aqueous adhesive, does not emit noxious gases at all but adsorb noxious gases emitted from other combustibles when a fire breaks out, thus the safety of the material of the present invention is very high.
• the material of the present invention has the high performance for construction such as nailing and sawing and is very effective in heat insulation, soundproofing, dehumidification, heat conservation, and fireproofing.
• the activated carbons contained in the material of the present invention emit numerous anions and adsorb cations and kinds of hazardous waves, thus the material of the present invention is very effective in maintaining the indoor environment comfortable.
• the material for building interior of the present invention is thus highly applicable in building interior industrial field.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Structural Engineering (AREA)
• Civil Engineering (AREA)
• Ceramic Engineering (AREA)
• Architecture (AREA)
• Materials Engineering (AREA)
• Environmental & Geological Engineering (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Building Environments (AREA)
• Dry Formation Of Fiberboard And The Like (AREA)

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Citations (7)

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• 2000
  • 2000-10-11 KR KR10-2000-0059856A patent/KR100421069B1/ko not_active IP Right Cessation
  • 2000-10-17 AU AU2000279677A patent/AU2000279677A1/en not_active Abandoned
  • 2000-10-17 WO PCT/KR2000/001164 patent/WO2002030844A1/en active Application Filing

Patent Citations (7)

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