GB2084212A - A process for the production of insulating panels - Google Patents

A process for the production of insulating panels Download PDF

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Publication number
GB2084212A
GB2084212A GB8127568A GB8127568A GB2084212A GB 2084212 A GB2084212 A GB 2084212A GB 8127568 A GB8127568 A GB 8127568A GB 8127568 A GB8127568 A GB 8127568A GB 2084212 A GB2084212 A GB 2084212A
Authority
GB
United Kingdom
Prior art keywords
rice
hull
fiberized
production
insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8127568A
Other versions
GB2084212B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
23 SZ ALLAMI EPITOIPARI VALLAL
Original Assignee
23 SZ ALLAMI EPITOIPARI VALLAL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 23 SZ ALLAMI EPITOIPARI VALLAL filed Critical 23 SZ ALLAMI EPITOIPARI VALLAL
Publication of GB2084212A publication Critical patent/GB2084212A/en
Application granted granted Critical
Publication of GB2084212B publication Critical patent/GB2084212B/en
Expired legal-status Critical Current

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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
    • 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
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • 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
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • C04B18/248—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
    • 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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K11/00—Use of ingredients of unknown constitution, e.g. undefined reaction products
    • C08K11/005—Waste materials, e.g. treated or untreated sewage sludge
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • 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
    • 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

Agricultural bast-waste with silicic acid content, mainly rice-hull, is used as basic material. It is first fiberized, and may be dewaxed. Filling material, e.g. perlite or rice- straw or asbestos, and binding material as for instance two-component synthetic resin-based adhesive are added to the fiberized rice-hull, and these are mixed to homogeneous mixture. The so-obtained mixture is cold or hot moulded.

Description

SPECIFICATION Process for the production of insulating panels The invention relates to a process for the production of insulating panels used to advantage mainly in the construction industry as insulating wall or roof panels.
Heat and sound insulating panels are widely used, generally made of synthetic foam of mineral oil origin, or from rock-wool, e.g. from basalt wool. Their common characteristic is that their production and installation are costly and labour-intensive, furthermore they are not sufficiently durable.
Escalating oil prices make the use of new, less expensive basic materials necessary for the insulating panels as well.
The invention is aimed at elimination of above deficiencies.
Accordingly the task to be solved with the invention is to develop an insulating panel production process whereby durable insulating panels can be produced at a relatively low cost, and having at least the same physical properties as the known insulating panels.
The invention is based on the recognition that several million tons of rice-hull are derived each year, which for its high silicic acid content is not suitable for feeding, nor as litter in the agriculture, thus it is regarded as environment pollutant. In view of the fact, that the rice-hull is difficult to burn /flash point is around 800"C/, thus its annihilation by burning is very costly.
Further characteristic of the rice-hull is that it does not decay and rodents and insects do not like it either.
The objective according to the invention was solved with an insulating panel production proces wherein agricultural bast-waste with silicic acid content, mainly rice-hull, is used as basic material. First it is fiberized and dewaxed, then filling material, preferably perlite or rice-straw, or asbestos, followed with binding material, preferably two-component synthetic resin-based adhesive are added to the fiberized and dewaxed rice-hull and mixed to homogenous mixture, then the so-obtained mixture is moulded to an insulating panel by pressing in a template or mould.
It is advisable to carry out the dewaxing by steeping with lime hydrate or lime chloride.
Another process according to the invention is when the pressing is carried out at a pressure of 12-25 bar and between 80 and 1 20 C temperature. With this hot pressing, the hardening time of the adhesive, and consequently the cycle time of production, can be reduced.
If necessary, the hardening of the adhesive can be accelerated by blowing hot air of 50-60"C onto the insulating panels following the moulding.
In order to improve the product, prior to dewaxing, the powdery substance derived at fiberization-which is harmful to the health-is removed.
The invention is described in detail by way of three examples of the process according to the invention.
Example 1.
Insulating panel of 5 X 60 X 300 cm size is made by cold pressing. For this purpose first the rice-hull is fiberized in a conventional roll mill, partly to increase the specific surface of the ricehull, and partly to stop the flexibility of the rice-hull pieces. Thus at fiberization the rice-hull is actually torn to its elementary fibres. The weight percent distribution of the granular structure obtained after fiberization is the following: - 3.5-5 mm = 20 weight % - 1.8-3.5 mm = 16 weight % - 1-1.8. mm = 64 weight % The about 10% powdery substance derived after fiberization is separated.
Next the fiberized rice-hull is steeped with lime chloride solution, whereby the wax is removed from its surface. This steeping with lime chloride may be carried out for instance in the worm conveyor itself.
Filling material is added to the fiberized and dewaxed rice-hull, such as perlite in the present case, and adhesive known by the tradename "ARBOCOL-NORMAL" as binding material and these are mixed to homogenous mixture for instance in rotary forced mixing machine.
Ammonium chloride is used as setting-starter of the adhesive. The so-obtained mixture is poured into template and pressing under 1.5 bar pressure it is moulded in insulating panel. Following the hardening of the adhesive, about 1 0-20-minutes, the template is stripped from the product.
Proportion of the weight fractions of components is the following: 120 weight fraction fiberized rice-hull 40 ,, ,, "P2" type perlite 90 ,, ,, "ARBOCOL-NORMAL adhesive 2 ,, ,, ammonium chloride setting-starter 1 QO ,, ,, water 5 ,, ,, lime chloride Example 2.
8 cm thick roof insulating panel was produced. The process differs from the one described in example 1 only in that cut and carded rice -straw is used instead of perlite as additive, furthermore thermosetting "ARBOCOiFKC" adhesive, hardening at 120'C is used as binding material. Press heated to 120"C is used for pressing and the applied pressure is 20-25 bar.
Proportion of weight fractions of the components is the following: 1 20 weight fraction fiberized rice-hull 80 " ,, cut and carded rice-straw 158 ,, ,, . "ARBOCOL-FKC" adhesive 6.25 ,, ,, ammonium chloride setting starter 156 ,, ,, water 8 ,, ,, lime chloride Example 3.
10 cm thick insulating panel was produced for premises exposed to high thermal load. Its production process is essentially the same as that of example 1. The difference is only that in addition to perlite, asbestos powder or asbestos of short fibre is added to the mixture.
Furthermore water glass and sodium silico-fluoride was used as binding material.
Proportion of weigh fractions of the components is the following: 40 weight fraction fiberized rice-hull 20 weight fraction "P2" type perlite 95 weight fraction asbestos powder of asbestos of short fibre 35 weight fraction water glass 4 weight fraction sodium silico-fluoride 10 weight fraction water 4 weight fraction lime hydrate The insulating panels produced with the process according to the invention are of very light weight, volume 210-310 kilopond/m3. The experiment results demonstrate that they have very good heat insulation property, thermal conductivity 0.045-0.065 kcal/mh "C. Compressive strength of the insulating panels according to the invention was 7-60 kp/cm2, moisture absorption in 100% relative humidity after 96 hours was only 5.3% of the weight.
The other experiments conducted with the insulating panel according to the invention, confirmed its durability, it is difficult to burn, painting and tapestry are readily applicable, can be glued, swan with metal-tipped tool, drilled, veneered and surface treated with thermal press, furthermore it can be provided with optimal waterproof layer, such as foil.
The insulating panel according to the invention may be used as heat- and sound-insulating wall panel, roof insulating panel, sandwich panels, as false ceiling and ornamental panel, moreover as other covering profile. By adding suitable additives, certain physical properties of the insulating panels, such as fire resistance, can be further improved with the addition of asbestos.
In comparison with the known rock-wool based insulating panel production process, the heating oil requirement of the process according to the invention is 25%, and the electric power requirement is about 6-8%.

Claims (7)

1. Process for the production of insulating panel, characterized in that agricultural bast-waste with silicic acid content, mainly rice-hull, is used as basic material, that is first fiberized, followed by adding first filling material, preferably perlite, or rice-straw, or asbestos to the fiberized and dewaxed rice-huli, and binding material, preferably a two-component synthentic resin-based adhesive and these are mixed to homogeneous mixture, then the so-obtained mixture is moulded by pressing.
2. Process as claimed in claim 1, characterized in that the dewaxing is carried out by steeping with lime hydrate or lime chloride.
3. Process as claimed in claim 1 or 2, characterized in that the pressing is carried out at a pressure of 12-24 bar and between 80 and 120"C temperature.
4. Process as claimed in any of claims 1-3, characterized in that hardening of the adhesive for the insulating panel is accelerated by blowing 50-60"C hot air after the moulding.
5. Process as claimed in any of claims 1-4, characterized in that prior to dewaxing the powdery substance derived from fiberization of the rice hull is separated.
.
6. A process for the production of insulating panels substantially as herein described with reference to any one of the examples.
7. Insulating panels wherever produced by a process as claimed in any preceding claim.
GB8127568A 1980-09-15 1981-09-11 Process for the production of insulating panels Expired GB2084212B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU80802261A HU181185B (en) 1980-09-15 1980-09-15 Method for producing bodies particularly auilding units

Publications (2)

Publication Number Publication Date
GB2084212A true GB2084212A (en) 1982-04-07
GB2084212B GB2084212B (en) 1984-06-20

Family

ID=10958560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8127568A Expired GB2084212B (en) 1980-09-15 1981-09-11 Process for the production of insulating panels

Country Status (10)

Country Link
AT (1) AT381925B (en)
CH (1) CH653078A5 (en)
DE (1) DE3136521C2 (en)
ES (1) ES506045A0 (en)
FR (1) FR2490142A1 (en)
GB (1) GB2084212B (en)
GR (1) GR75084B (en)
HU (1) HU181185B (en)
IN (1) IN154800B (en)
IT (1) IT1139168B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690874A (en) * 1984-04-25 1987-09-01 Tourisme Hotellerie Ltd. Molded construction element
US4900378A (en) * 1987-03-19 1990-02-13 Ladd Furniture, Inc. Method for making a decorative panel
US5177924A (en) * 1986-12-03 1993-01-12 Stefan Kakuk Lightweight building component
AU651285B2 (en) * 1992-10-12 1994-07-14 Foong Intellectual Properties Sdn Bhd Cellulosic bodies
WO1995006679A1 (en) * 1993-09-01 1995-03-09 Seacrest Building Pty. Ltd. Fibre reinforced plastic compound material and articles made therefrom
EP0729814A1 (en) * 1995-03-03 1996-09-04 National Research Development Corporation A process for producing composite particle board from rice husk
WO1997013629A1 (en) * 1995-10-06 1997-04-17 Richard Laurance Lewellin Manufacture of bodies using rice hulls
EP0792974A1 (en) * 1996-03-01 1997-09-03 Carsten Klatt Insulating material from rice husks for producing an insulating material filling, method for its production and method for producing an insulation material filling from this product
AU688126B2 (en) * 1994-01-06 1998-03-05 Ricegrowers' Co-Operative Limited Structural and insulative materials and products
WO1998058127A1 (en) * 1997-06-13 1998-12-23 Richard Laurance Lewellin Acoustic barrier
WO1999002318A1 (en) * 1997-07-11 1999-01-21 Marlit Ltd. Manufacture of composite boards
WO1999059786A1 (en) * 1998-05-19 1999-11-25 Valmet Panelboard Gmbh Method for producing shaped bodies
WO2000042116A2 (en) * 1999-01-18 2000-07-20 Contract Research & Development (M) Sdn. Bhd. Use of vegetative material as a filler in composite materials
KR20010089911A (en) * 2000-03-13 2001-10-17 류영선 The chemical-free bulding materials and it`s manufacturing method
EP1251110A1 (en) * 2001-04-19 2002-10-23 Minebea Co., Ltd. Weather-resistant ceramic exterior building material
AU774061B2 (en) * 1999-10-22 2004-06-17 Benson, John Process for production of perlite fiber composite panel board
CN106007618A (en) * 2016-05-19 2016-10-12 陆玉如 Light and thin asbestos board

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3200914A1 (en) * 1982-01-14 1983-07-28 Held, Kurt, 7218 Trossingen METHOD FOR PRODUCING PRESSES
FR2556738A1 (en) * 1983-12-16 1985-06-21 Ferrazzini Patrick Agglomerated material with a high degree of nonflammability
DE4037865A1 (en) * 1990-11-28 1992-06-11 Theodor Hufer Gmbh Sound-proofing union plate - has core of pressed wood and/or cellulose in form of briquettes
CA2092834C (en) * 1992-03-31 1997-09-16 Ritsuo Iwata Wood based panels and their method of manufacture
ES2077494B1 (en) * 1993-03-23 1996-07-16 Envas Vec D Or Sl MANUFACTURING PROCEDURE OF AN ECOLOGICAL AND RECYCLABLE MATERIAL FOR THE CONSTRUCTION OF VARIOUS MOLDED OBJECTS AND A MATERIAL SO OBTAINED.
DE19607962C1 (en) * 1996-03-01 1997-06-19 Carsten Klatt Manufacturing insulation material out of rice husks
ES2345804B1 (en) * 2009-03-31 2011-07-29 Jordi Castañe Callis LOW DENSITY ARGAMASE WITH THERMO-ACOUSTIC PROPERTIES.
CN108424303A (en) * 2018-06-11 2018-08-21 孙永妮 A method of preparing pest-resistant organic composite fertilizer using agriculture wastes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT78403B (en) * 1915-07-13 1919-09-25 Axel Hamberg Thermal insulation material for cavity walls.

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690874A (en) * 1984-04-25 1987-09-01 Tourisme Hotellerie Ltd. Molded construction element
US5177924A (en) * 1986-12-03 1993-01-12 Stefan Kakuk Lightweight building component
US4900378A (en) * 1987-03-19 1990-02-13 Ladd Furniture, Inc. Method for making a decorative panel
AU651285B2 (en) * 1992-10-12 1994-07-14 Foong Intellectual Properties Sdn Bhd Cellulosic bodies
WO1995006679A1 (en) * 1993-09-01 1995-03-09 Seacrest Building Pty. Ltd. Fibre reinforced plastic compound material and articles made therefrom
AU688126B2 (en) * 1994-01-06 1998-03-05 Ricegrowers' Co-Operative Limited Structural and insulative materials and products
EP0729814A1 (en) * 1995-03-03 1996-09-04 National Research Development Corporation A process for producing composite particle board from rice husk
US6187249B1 (en) 1995-10-06 2001-02-13 Richard Laurance Lewellin Manufacture of bodies using rice hulls
WO1997013629A1 (en) * 1995-10-06 1997-04-17 Richard Laurance Lewellin Manufacture of bodies using rice hulls
EP0792974A1 (en) * 1996-03-01 1997-09-03 Carsten Klatt Insulating material from rice husks for producing an insulating material filling, method for its production and method for producing an insulation material filling from this product
WO1998058127A1 (en) * 1997-06-13 1998-12-23 Richard Laurance Lewellin Acoustic barrier
WO1999002318A1 (en) * 1997-07-11 1999-01-21 Marlit Ltd. Manufacture of composite boards
WO1999059786A1 (en) * 1998-05-19 1999-11-25 Valmet Panelboard Gmbh Method for producing shaped bodies
US6656399B1 (en) 1998-05-19 2003-12-02 Valmet Panelboard Gmbh Method for producing shaped bodies
WO2000042116A2 (en) * 1999-01-18 2000-07-20 Contract Research & Development (M) Sdn. Bhd. Use of vegetative material as a filler in composite materials
WO2000042116A3 (en) * 1999-01-18 2002-09-12 Contract Res & Dev M Sdn Bhd Use of vegetative material as a filler in composite materials
US6875263B1 (en) 1999-01-18 2005-04-05 Contract Research And Development Use of vegetative material as a filler in composite materials
AU774061B2 (en) * 1999-10-22 2004-06-17 Benson, John Process for production of perlite fiber composite panel board
KR20010089911A (en) * 2000-03-13 2001-10-17 류영선 The chemical-free bulding materials and it`s manufacturing method
EP1251110A1 (en) * 2001-04-19 2002-10-23 Minebea Co., Ltd. Weather-resistant ceramic exterior building material
US6855279B2 (en) 2001-04-19 2005-02-15 Minebea Co., Ltd. Weather-resistant exterior building material
CN106007618A (en) * 2016-05-19 2016-10-12 陆玉如 Light and thin asbestos board

Also Published As

Publication number Publication date
AT381925B (en) 1986-12-10
ES8205736A1 (en) 1982-08-16
FR2490142B1 (en) 1985-05-03
IN154800B (en) 1984-12-15
CH653078A5 (en) 1985-12-13
FR2490142A1 (en) 1982-03-19
IT8123975A0 (en) 1981-09-15
GR75084B (en) 1984-07-13
DE3136521C2 (en) 1985-08-22
DE3136521A1 (en) 1982-06-09
GB2084212B (en) 1984-06-20
HU181185B (en) 1983-06-28
IT1139168B (en) 1986-09-24
ATA394181A (en) 1986-05-15
ES506045A0 (en) 1982-08-16

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