NO124419B - - Google Patents
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- NO124419B NO124419B NO477569A NO477569A NO124419B NO 124419 B NO124419 B NO 124419B NO 477569 A NO477569 A NO 477569A NO 477569 A NO477569 A NO 477569A NO 124419 B NO124419 B NO 124419B
- Authority
- NO
- Norway
- Prior art keywords
- weight
- chipboard
- chemicals
- flame retardant
- fiber material
- Prior art date
Links
- 239000000126 substance Substances 0.000 claims description 30
- 239000003063 flame retardant Substances 0.000 claims description 27
- 239000011093 chipboard Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 18
- 239000002657 fibrous material Substances 0.000 claims description 16
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 13
- 239000000123 paper Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 14
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 11
- 239000004327 boric acid Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 10
- 238000000926 separation method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002023 wood Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- 239000002916 wood waste Substances 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Fireproofing Substances (AREA)
- Paper (AREA)
Description
Fremgangsmåte for innføring av pulverformede Procedure for the introduction of powdered
flammehemmende kjemikalier i sponplater e.l. flame retardant chemicals in chipboard etc.
Foreliggende oppfinnelse angår en fremgangsmåte for innforing The present invention relates to a method for insertion
av pulverformede flammehemmende kjemikalier i sponplater eller i materialer fremstilt på tilsvarende måte fra rystegods. of powdered flame retardant chemicals in chipboard or in materials produced in a similar way from shakeable goods.
Ved fremstilling av sponplater er det ofte nodvendig eller onskelig å tilblande stoffer for forbedring av bestemte egenskaper eller for å forhindre ytre angrep på sponene. Hvis disse tilblandinger skal ha optimal virkning må de fordeles mest mulig homogent. Som slike stoffer kommer spesielt i betraktning hydrofoberingsmidler, fungisider, insektisider og brannhemmende midler. I alminnelighet blir det her benyttet kjemikalier som foreligger i flytende eller pulver-form. In the production of chipboard, it is often necessary or desirable to add substances to improve certain properties or to prevent external attack on the chips. If these admixtures are to have an optimal effect, they must be distributed as homogeneously as possible. Hydrophobic agents, fungicides, insecticides and fire retardants come into particular consideration as such substances. In general, chemicals that are available in liquid or powder form are used here.
Hvis kjemikaliene foreligger i flytende form blir de påsproytet sponene eller innblandet i limblandingen. Hvis de derimot foreligger i pulverform kan de nok tilsettes limblandingen og deretter påsproytes sponene, men i slike tilfeller blir ofte bindeevnen redusert eller helt odelagt. En enkel tilblanding er imidlertid ikke mulig idet en slik blanding, hvis den utsettes for vibrasjon, lett blir utsatt for en separasjon. Slike vibrasjoner kan imidlertid ikke utelukkes i et sponplate-fremstillende anlegg. If the chemicals are available in liquid form, they are sprayed onto the chips or mixed into the adhesive mixture. If, on the other hand, they are available in powder form, they can probably be added to the adhesive mixture and then sprayed onto the chips, but in such cases the bonding ability is often reduced or completely destroyed. A simple admixture is not possible, however, as such a mixture, if exposed to vibration, is easily subjected to a separation. However, such vibrations cannot be ruled out in a chipboard manufacturing plant.
For å hindre en slik separasjon blir ved de kjente fremgangsmåter sponene forst fuktet. Derved vil det imidlertid, når fuktingen skjer ved hjelp av limblandingen, oppstå beskadigelse av bindeevnen med tilsvarende reduksjon av styrken i den ferdige sponplate. Dette er spesielt tilfelle når det skal tilsettes flammehemmende midler da disse benyttes i vesentlig storre vektandeler enn tilfellet er ved andre beskyttelses-kjemikalier. In order to prevent such a separation, in the known methods, the shavings are first moistened. Thereby, however, when the wetting takes place with the help of the adhesive mixture, damage to the binding ability will occur with a corresponding reduction in the strength of the finished chipboard. This is especially the case when flame retardants are to be added, as these are used in substantially larger proportions by weight than is the case with other protective chemicals.
Tilsettes for eksempel borsyre som brannhemmende middel til tungt antennelige påfbringer på sponplater, må 10 til 15 vektdeler borsyre pr. 8 til 10 vektdeler bindemiddel innfores i sponplaten. Herved og på grunn av den okede fortynning blir limblandingens bindekraft sterkt svekket, hvilket virker skadelig på slutt-produktets fysiske fasthetsegenskaper. Det samme blir tilfelle når det pulveriserte tilsatsmaterial tilsettes det limte trespon-utgangsmaterial i torr form, idet tilsatsmaterialet da dekker bindemidlet, slik at det også da.oppstår en svekket forbindelse mellom de enkelte tresponpartikler. Dessuten er flere av de anvendte tilsatskjemikalier vannloselige, slik at de under visse betingelser i folelig grad kan forstyrre det meget noyaktig fuktighetsinnhold i det belagte material som skal presses til sponplater. If, for example, boric acid is added as a fire retardant to highly flammable coatings on chipboard, 10 to 15 parts by weight of boric acid per 8 to 10 parts by weight of binder are introduced into the chipboard. In this way and because of the increased dilution, the bonding power of the adhesive mixture is greatly weakened, which has a detrimental effect on the physical strength properties of the final product. The same happens when the powdered additive material is added to the glued wood chip starting material in dry form, as the additive material then covers the binder, so that a weakened connection between the individual wood chip particles also then occurs. In addition, several of the additive chemicals used are water-soluble, so that under certain conditions they can significantly interfere with the very precise moisture content of the coated material that is to be pressed into chipboard.
For det forste er altså den torre tilblanding av kjemikaliene til likeledes torre spon vanskeliggjort, henholdsvis umuliggjort ved risikoen for separasjon, for det annet ved at de tilforte kjemikalier til det limte spon hindrer en tilstrekkelig binding, henholdsvis i det minste skader bindingen mellom de enkelte spon. Foreliggende oppfinnelse går således ut på en fremgangsmåte hvormed det er mulig å tilsette de torre pulverformede flamme-hindrende kjemikalier i nodvendig mengde til sponene slik at det ikke oppstår noen separasjon og heller ikke noen reduksjon av styrkeegenskapene i det ferdige produkt. Firstly, the dry addition of the chemicals to similarly dry chips is made difficult, respectively made impossible due to the risk of separation, secondly by the fact that the added chemicals to the glued chips prevent a sufficient bond, or at least damage the bond between the individual chips . The present invention is thus based on a method by which it is possible to add the dry powder-form flame-retardant chemicals in the required amount to the chips so that no separation occurs and also no reduction of the strength properties in the finished product.
Denne oppgave er i henhold til foreliggende oppfinnelse lost ved at det forst dannes en forblanding av de flammehemmende kjemikalier og en rystegodsandel hvoretter denne forblanding innblandes i minst en ytterligere spon- eller rystegodsandel, og hvor det særegne består i at de flammehemmende kjemikalier avleires på fibermaterial som stammer fra avvann-rensing. According to the present invention, this task is solved by first forming a premix of the flame retardant chemicals and a portion of shakeable material, after which this premix is mixed into at least one further chip or shakeable portion, and where the distinctive feature is that the flame retardant chemicals are deposited on fiber material which originates from wastewater treatment.
Ved å forbinde de i og for seg kjente flammehemmende kjemikalier med fibermaterialet hindres med sikkerhet en separasjon da fibermaterialet ikke er risledyktig, men holder seg på overflaten av de grove spon. Dette er tilfelle både når det gjelder torre spon og når det gjelder allerede fuktede spon. Overraskende har det dessuten vist seg at kjemikaliene som har bundet seg til fibermaterialet ikke virker odeleggende på bindingen mellom sponene slik at det til tross for den ofte sterke tilsetning av flammehemmende midler alltid oppnås tilnærmet like gode bindingsegenskaper mellom sponene. Det er således gitt en fremgangsmåte hvormed slike kjemikalier kan tilsettes til torre eller fuktige spon uten at det må foretas noen endring i det normale fremstillingsforlop og uten at styrkeegenskapene i det ferdige produkt blir dårligere. By connecting the per se known flame retardant chemicals with the fiber material, a separation is prevented with certainty as the fiber material is not capable of dripping, but stays on the surface of the coarse shavings. This is the case both when it comes to dry shavings and when it comes to already moistened shavings. Surprisingly, it has also been shown that the chemicals that have bonded to the fiber material do not affect the bond between the chips so that, despite the often strong addition of flame retardants, approximately equally good bonding properties are always achieved between the chips. A method has thus been provided by which such chemicals can be added to dry or moist shavings without any change having to be made in the normal manufacturing process and without the strength properties of the finished product becoming worse.
Fibermaterialet som benyttes ved fremgangsmåten i henhold til oppfinnelsen kan være organisk eller anorganisk. Som organiske materialer kan nevnes tekstil- eller trestov, oppfangningsstoffer som stammer fra avvannsrensning fra papirfabrikker, fibre og stov fra platetrevler, og som anorganiske materialer kan nevnes asbest- og glass- fibre. Nettopp denne siste gruppe materialer er spesielt fordelaktige, idet disse fibre i seg selv er ubrennbare og dermed automatisk bevirker en reduksjon av slutt-produktets brennbarhet. The fiber material used in the method according to the invention can be organic or inorganic. As organic materials we can mention textile or wood pulp, collecting substances originating from waste water treatment from paper mills, fibers and dust from plate fibers, and as inorganic materials we can mention asbestos and glass fibres. Precisely this last group of materials is particularly advantageous, as these fibers are in themselves non-combustible and thus automatically cause a reduction in the final product's flammability.
Fortrinnsvis skjer avleiringen av kjemikaliene på fibrene i Preferably, the chemicals are deposited on the fibers in
torr tilstand slik at det oppnås en "punktformet" avleiring av de små støvpartikler på de i forhold hertil lange fibre. Forsok har vist at det ved en slik avleiring ikke oppstår noen målbar reduksjon av bindingen mellom sponene. dry state so that a "point-shaped" deposit of the small dust particles on the comparatively long fibers is achieved. Experiments have shown that such deposits do not cause any measurable reduction in the bond between the chips.
Denne "punktformede" avleiring understøttes ved at de enkelte fibre i fibermaterialet er oppfliset eller fibrillert, henhv. This "point-shaped" deposit is supported by the fact that the individual fibers in the fiber material are chipped or fibrillated, respectively.
at deres overflater er oppruet. For det samme formål er det hensiktsmessig med en motsatt elektrisk oppladning av de to materialer, henhv. med et slikt valg av materialer at det sikres en ionereaksjon. Eksempelvis har borsyre et meget hoyt ione-potensial, mens cellulosematerialet og de fleste jordalkalier som benyttes i papirindustrien som fyllstoffer og strekkmiddel forholder seg motsatt ladet eller noytralt. Ved en blanding av de to komponenter, f.eks. ved blanding av oppfangningsstoffene fra avvanmsnsing ved papirfabrikasjon, med borsyre oppnås en god heftirg av borsyrepartiklene til de fibrose oppfangningsstoffer. that their surfaces are roughened. For the same purpose, it is appropriate to have an opposite electrical charge of the two materials, respectively. with such a choice of materials that an ion reaction is ensured. For example, boric acid has a very high ion potential, while the cellulose material and most alkaline earths used in the paper industry as fillers and stretching agents are oppositely charged or neutral. In the case of a mixture of the two components, e.g. by mixing the trapping substances from dewatering during paper manufacture with boric acid, a good adhesion of the boric acid particles to the fibrous trapping substances is achieved.
Hvis dertil rystevekten for det fibermaterial som forbindes med kjemikaliene blir slik innstilt at den tilsvarer rystevekten av sponene vil det også ved slette forbindelsesegenskaper oppnås god sikkerhet mot en separasjon av materialene. Borsyre har f.eks.. en rystevekt på 850 kg/m^. Det oppfibrede, fylte oppfangn.ings-stoff fra finpapirfabrikker har en rystevekt på ca. 200 kg/m^. Folgelig har en blanding bestående av hh% borsyre og $ 6% av nevnte fiberstoff en rystevekt på 500 kg/m^. Dette tilsvarer omtrent, rystevekten til den ved sponplatefremstillingen anvendte spon-blanding av flisblanding, trefiber og treavfall.'If, in addition, the shaking weight of the fiber material that is connected to the chemicals is set so that it corresponds to the shaking weight of the shavings, good security against a separation of the materials will be achieved even with poor connection properties. Boric acid, for example, has a shaking weight of 850 kg/m^. The fibred, filled collection material from fine paper mills has a shaking weight of approx. 200 kg/m². Consequently, a mixture consisting of hh% boric acid and $ 6% of said fibrous material has a shaking weight of 500 kg/m^. This roughly corresponds to the shaking weight of the chip mixture of wood chips, wood fiber and wood waste used in chipboard production.'
Fremgangsmåten i henhold til oppfinnelsen skal nå beskrives The method according to the invention will now be described
under henvisning til folgende eksempel: with reference to the following example:
Det er kjent og allerede i litteraturen beskrevet at man bl.a. It is known and already described in the literature that one e.g.
kan anvende natriummetaborat, sinkklorid, ammoniumfosfat samt også borsyre for brannbeskyttelsesbehandling av sponplater. I henhold til den kjente fremgangsmåte går man frem som folger: can use sodium metaborate, zinc chloride, ammonium phosphate and also boric acid for fire protection treatment of chipboard. According to the known procedure, the procedure is as follows:
Sponen behandles forst med en impregneringslosning fremstilt The chip is first treated with a prepared impregnation solution
under anvendelse av brannhemmende salter og deretter må sponen påny torkes. Denne fremgangsmåte lar seg Ikke innpasse i den vanlige fremstillingsprosess for sponplater. Det må tvertimot anskaffes ytterligere kostbare innretninger. Den ytterligere arbeidsgang, bestående i impregnering og tbrking, forhoyer fremstillingsomkostningene betydelig. Ved en annen kjent impregneringsfremgangsmåte, hvilken sogar må gjennomføres under opprettholdelse av bestemte temperaturer, må også opprettholdelsen av en bestemt pH overvåkes, hvilket betyr en vanskeliggjoring av produksjonsforlopet. using fire-retardant salts and then the chips must be dried again. This method cannot be fitted into the usual production process for chipboard. On the contrary, additional expensive equipment must be acquired. The additional work, consisting of impregnation and application, increases the production costs significantly. In another known impregnation method, which must be carried out while maintaining specific temperatures, the maintenance of a specific pH must also be monitored, which means that the production process is made difficult.
Det er også kjent å tilsette limblandingen brannhemmende salter. Da imidlertid de nodvendige mengder salt for en nbdvendig flamme-beskyttelse andrar til mellom 10 og 15 vektdeler på'basis av trematerialet, mens det bare behoves 8-12 vektdeler kunstharpiks på basis av trematerialet for liming, belastes limblandingen ved tilfbrselen av saltene og den nodvendige fortynning derav i en slik grad at en akseptabel liming og dermed en tilfredsstillende fasthet av sluttproduktet ikke kan sikres. It is also known to add fire retardant salts to the adhesive mixture. Since, however, the necessary quantities of salt for a necessary flame protection vary between 10 and 15 parts by weight based on the wood material, while only 8-12 parts by weight of artificial resin are needed on the basis of the wood material for gluing, the glue mixture is stressed by the supply of the salts and the necessary dilution thereof to such an extent that an acceptable bonding and thus a satisfactory firmness of the final product cannot be ensured.
Det har ytterligere vært foreslått å tilblande sponen det brannhemmende middel, og her frem for alt borsyre, i pulver- eller granulatform for eller etter limingen. Som folge av blandings-godsetsmeget forskjellige rystevekter, storrelse og form vil fremstillingen av homogene blandinger under anvendelse av de i sponplateindustrien forhåndenværende blandeinnretninger stote på vanskeligheter. Ennå stbrre synes faren for separasjon av slike blandinger å være i strostasjonene. I hvert fall kan blandingens homogenitet og dermed den jevne fordeling av det brannhemmende middel ikke sikres. It has also been proposed to mix the fire retardant with the chips, and here above all boric acid, in powder or granule form before or after gluing. As a result of the different shaking weights, sizes and shapes of the mixed materials, the production of homogeneous mixtures using the mixing devices available in the chipboard industry will encounter difficulties. The danger of separation of such mixtures still seems to be greater in the straw stations. In any case, the homogeneity of the mixture and thus the even distribution of the fire retardant cannot be ensured.
Blander man de brannhemmende salter, som er vannlbselige, til det limte spon, så vil saltene trekke til seg en del av limblandingens vann som imidlertid er nbdvendig for kondensasjonsprosessen og dermed en akseptabel liming av sponen. Også her hindrer de nodvendige hbye andelsbrannhemmende salter en akseptabel liming. If you mix the fire-retardant salts, which are water-soluble, to the glued chips, the salts will absorb some of the glue mixture's water, which is, however, necessary for the condensation process and thus an acceptable bonding of the chips. Here, too, the necessary high proportion fire-retardant salts prevent acceptable gluing.
Denne fremgangsmåte kan således ikke lede til tilfledssitillende resultater og blir såvidt man kjenner til ikke anvendt industrielt. Fremgangsmåten i henhold til oppfinnelsen beror på at spon-spektret som er forskjellig i de forskjellige sponplatefabrikker, ved blandingen av sponen eller de enkelte sponfraksjoner som allerede er forbehandlet for fremstillingen av selve sponplaten, tilblandes tort fibermaterial som på grunn av de til fibrene heftende kjemikalier bevirker at den således ferdigfremstilte sponplate blir tungt antennelig. Tilblandingen av tilsatsmaterialet i henhold til oppfinnelsen, henholdsvis tungtantennelig-heten eller oppnåelsen av bestemte egenskaper kan oppnås ved alle sponplatefabrikker uten forandring av maskinanordningen og produksjonsforlopet på en enkel, sikker og okonomisk måte. This method cannot therefore lead to satisfactory results and, as far as is known, is not used industrially. The method according to the invention is based on the chip spectrum, which is different in the different chipboard factories, when mixing the chips or the individual chip fractions that have already been pre-treated for the production of the chipboard itself, dry fiber material is mixed in which, due to the chemicals adhering to the fibers, causes that the chipboard produced in this way becomes highly flammable. The addition of the additive material according to the invention, respectively the low flammability or the achievement of certain properties can be achieved at all chipboard factories without changing the machine arrangement and the production process in a simple, safe and economical way.
Hvis man som fibermaterial anvender oppfangningsstoffer fra vannrensing av avvann fra finpapirfabrikker, så hefter det til de sterkt forgrenede finfibre opp til 50 vektdeler mineralstoffer som ikke bare er ubrennbare, men utover det besitter en brannhemmende virkning og understøtter den brannhemmende. virkning til brannbeskyttelses-saltene, hvilket kunne påvises ved utviklingen av foreliggende oppfinnelse. Utsetter man sponplateprovelegemer for direkte flamme, kan man ved veiing for og etter at legemene har vært utsatt for flammer, beregne den oppbrente mengde i vektprosent. Det ble funnet at vekttapet ble redusert med opp til 50$, når sponplateprovelegemer var tilblandet 25 vektprosent av slik oppfangningsstoff for limingen. Ved anvendelse av fenolharpite som bindemiddel brente disse prover uten slik tilblanding 100$ opp, ved tilsetning lå den oppbrente mengde på opp til 50 vektprosent. If you use as fiber material capture substances from water treatment of waste water from fine paper factories, then up to 50 parts by weight of mineral substances are attached to the highly branched fine fibers which are not only non-combustible, but in addition have a fire-retardant effect and support the fire-retardant effect. effect to the fire protection salts, which could be demonstrated by the development of the present invention. If you expose chipboard sample bodies to direct flame, by weighing before and after the bodies have been exposed to flames, you can calculate the burnt amount in percentage by weight. It was found that the weight loss was reduced by up to 50$, when particleboard samples were mixed with 25% by weight of such scavenging material for the bonding. When phenol harpite was used as a binder, these samples burnt up 100$ without such admixture, with addition the amount burnt was up to 50% by weight.
Til de ved papirfremstillingen hyppigst forekommende fyllstoffer horer kaolin, talkum og krittmel. Kaolin består gjennomsnittlig av ^6 vektdeler kiselsyre, ho vektdeler aluminiumoksyd og 1V vektdeler krystallvann.. Talkum består av 9U- vektdeler kiselsurt magnesiumoksyd og 6 vektdeler krystallvann. Godt krittmel består av 52 vektdeler kalsiumoksyd, k- 2 vektdeler karbondioksyd og 6 vektdeler krystallvann. Alle disse komponenter virker i branntilfelle flammehemmende og understøtter flammebeskyttelses-saltenes brannhemmende virkning. Kaolin, talc and chalk flour belong to the most frequently occurring fillers in paper production. Kaolin consists on average of ^6 parts by weight of silicic acid, ho parts by weight of aluminum oxide and 15 parts by weight of crystal water. Talc consists of 9 parts by weight of silicic magnesium oxide and 6 parts by weight of crystal water. Good chalk flour consists of 52 parts by weight of calcium oxide, 2 parts by weight of carbon dioxide and 6 parts by weight of crystal water. All these components are flame retardant in the event of a fire and support the fire retardant effect of the flame protection salts.
TilbTander man dette fibergods en tilsvarende stor andel ikke lbselige eller tungt loselige flammebeskyttelsessalter, for eksempel borsyre, fås et fibermaterial som uten vanskeligheter kan tilblandes det ovrige sponmaterial som anvendes i sponplatefremstillingen og som i hby grad virker brannhemmende. If you add to this fiber material a correspondingly large proportion of insoluble or poorly soluble flame protection salts, for example boric acid, a fiber material is obtained which can be mixed without difficulty with the other chipboard material used in chipboard production and which has a high degree of fire retardant effect.
Forsbksvis ble det fremstilt tre-skiktssponplater hvor begge dekkskiktene tilsammen utgjorde ^0 vektprosent og midtskiktet 60 vektprosent av den samlede vekt. Dekkskiktene hadde i presset tilstand fblgende sammensetning: For example, three-layer chipboards were produced where both cover layers together accounted for 30% by weight and the middle layer 60% by weight of the total weight. The tire layers had the following composition in the compressed state:
Midtskiktet hadde fblgende sammensetning: - Fiberblandingen besto av 60 vektdeler (absolutt torr) tbrket og malt oppfangningsstoff, oppnådd ved slamfelling fra en papir-fabrikk, og som var tilsatt ho vektdeler borsyre i pulverform. The middle layer had the following composition: - The fiber mixture consisted of 60 parts by weight (absolutely dry) dried and ground capture material, obtained by sludge precipitation from a paper factory, and to which was added a large part by weight of boric acid in powder form.
Sponplatene ble fremstilt på fblgende måte: The chipboards were produced in the following way:
Det opparbeidede trespon, slik den fremkommer ved sponplatefremstillingen, ble blandet med den ferdige fiberblanding. Deretter ble ureaharpiksen i k8% lbsning påsprbytet. Av denne blanding ble sponplatekaker formet på vanlig måte og presset under de vanlige betingelser for sponplater. The processed wood shavings, as they appear during chipboard production, were mixed with the finished fiber mixture. Then the urea resin in k8% solution was changed. From this mixture, chipboard cakes were formed in the usual way and pressed under the usual conditions for chipboard.
I sluttproduktet som ved 22 mm platetykkelse hadde en råvekt på ca. 630 kg/nr1, ble det målt$ en bbyefasthet på 215 kp/cm . Tykkelseævelling etter lagring i 2 timer under vann andro til 3,1$ og tverrspenningsfastheten 3,<1>+ kp/cm . Platene hadde en utmerket flammefasthet. In the final product, which at 22 mm plate thickness had a raw weight of approx. 630 kg/nr1, a tensile strength of 215 kp/cm was measured. Thickness reduction after storage for 2 hours under water was 3.1$ and the transverse tensile strength 3.<1>+ kp/cm. The plates had excellent flame resistance.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681812825 DE1812825C3 (en) | 1968-12-05 | 1968-12-05 | Process for the production of chipboard with high flame resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
NO124419B true NO124419B (en) | 1972-04-17 |
Family
ID=5715302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO477569A NO124419B (en) | 1968-12-05 | 1969-12-03 |
Country Status (13)
Country | Link |
---|---|
JP (1) | JPS4829609B1 (en) |
AT (1) | AT315465B (en) |
BE (1) | BE742690A (en) |
CH (1) | CH502183A (en) |
DE (1) | DE1812825C3 (en) |
DK (1) | DK134849B (en) |
FR (1) | FR2025411A1 (en) |
GB (1) | GB1261136A (en) |
IE (1) | IE33424B1 (en) |
LU (1) | LU59946A1 (en) |
NL (1) | NL163247C (en) |
NO (1) | NO124419B (en) |
SE (1) | SE363479B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2621739C2 (en) * | 1976-05-15 | 1985-10-03 | Chemische Fabrik Kalk GmbH, 5000 Köln | Process for the production of a flame retardant component for chipboard |
JPS52167807U (en) * | 1976-06-14 | 1977-12-20 | ||
SG50438A1 (en) * | 1993-07-29 | 1998-07-20 | A C I Australia Ltd | Composite board |
JP7250595B2 (en) * | 2019-04-02 | 2023-04-03 | アイカ工業株式会社 | Method for producing noncombustible inorganic fiber fabric laminate |
-
1968
- 1968-12-05 DE DE19681812825 patent/DE1812825C3/en not_active Expired
-
1969
- 1969-10-16 AT AT978969A patent/AT315465B/en not_active IP Right Cessation
- 1969-11-28 IE IE161069A patent/IE33424B1/en unknown
- 1969-12-01 NL NL6918052A patent/NL163247C/en not_active IP Right Cessation
- 1969-12-02 CH CH1794269A patent/CH502183A/en not_active IP Right Cessation
- 1969-12-03 NO NO477569A patent/NO124419B/no unknown
- 1969-12-04 SE SE1672069A patent/SE363479B/xx unknown
- 1969-12-04 LU LU59946D patent/LU59946A1/xx unknown
- 1969-12-05 JP JP9775469A patent/JPS4829609B1/ja active Pending
- 1969-12-05 DK DK643669A patent/DK134849B/en unknown
- 1969-12-05 GB GB5956469A patent/GB1261136A/en not_active Expired
- 1969-12-05 FR FR6941875A patent/FR2025411A1/fr not_active Withdrawn
- 1969-12-05 BE BE742690D patent/BE742690A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1812825A1 (en) | 1970-06-18 |
SE363479B (en) | 1974-01-21 |
FR2025411A1 (en) | 1970-09-11 |
CH502183A (en) | 1971-01-31 |
GB1261136A (en) | 1972-01-19 |
AT315465B (en) | 1974-05-27 |
DK134849B (en) | 1977-01-31 |
DE1812825C3 (en) | 1974-02-14 |
NL163247B (en) | 1980-03-17 |
NL163247C (en) | 1980-08-15 |
NL6918052A (en) | 1970-06-09 |
BE742690A (en) | 1970-05-14 |
DK134849C (en) | 1977-06-20 |
LU59946A1 (en) | 1970-02-04 |
JPS4829609B1 (en) | 1973-09-12 |
IE33424L (en) | 1970-06-05 |
IE33424B1 (en) | 1974-06-26 |
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