DEP0003089DA - - Google Patents
Info
- Publication number
- DEP0003089DA DEP0003089DA DEP0003089DA DE P0003089D A DEP0003089D A DE P0003089DA DE P0003089D A DEP0003089D A DE P0003089DA
- Authority
- DE
- Germany
- Prior art keywords
- binder
- formaldehyde
- moldings
- solution
- plates
- 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.)
- Active
Links
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 18
- 239000000243 solution Substances 0.000 description 7
- 239000007859 condensation product Substances 0.000 description 5
- 239000004848 polyfunctional curative Substances 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 244000273256 Phragmites communis Species 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002916 wood waste Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Description
B A D 1 3 C H S H I L I I» ft SO I! ü «? i £ I H (X.GoParbe&l&deustri· iktltoeeetlloohaft "I»B A D 1 3 C H S H I L I I »ft SO I! ü «? i £ I H (X.GoParbe & l & deustri · iktltoeeetlloohaft "I»
viV80b Unser Zeichens 0*ga 15217A524O/ - Kit.«Be.viV80b Our reference 0 * g a 15217A524O / - Kit. «Be.
*/*h.,den X8.* / * h., the X8.
Verfahren aar Herstellung von Formkörpern, insbesondere Baaplatten. Process aar production of moldings, in particular Baaplatten.
Ss ist bekannt» Formkörper, inabesondere Bauplatten,,, aas im wesentlichen groben Faserstoffen, wie Holzwolle, Stroh? Schilf, Gras and Heaabfallen, mit Hilfe von organischen Bindemitteln herzustellen. Dabei aasa man, am Srzeagnisse von aasreichender Festigkeit zu. erzielen, die Faserstoffe mit verhältnismäßig viel J^%^ Lösung oder Dispersion des Bindemittels tränken, bei Verwendung von Kondensationsprodakten aas Harnstoff and Formaldehyd mit soviel, dass etwa 20 # festes Bindemittel aaf die Faserstoffe kommen»Ss is known »moldings, in particular building boards ,,, mainly coarse fibers such as wood wool, Straw? Manufacture of reeds, grass and heaps with the help of organic binders. At the same time aasa man, on the scene of sufficient firmness. achieve the fibrous materials with a relatively large amount of solution or dispersion soak the binding agent when using condensation products aas urea and formaldehyde with so much that about 20 # solid binder aaf the fibers come »
Ss wurde gefanden, dass man Formkörper der beschriebenen Art mit ausgezeichneter Festigkeit anter Verwendang von wesentlich weniger Bindemittel erhält, wenn man Lösungen oder Dispersionen des Bindemittels aaf die Faserstoffe möglichst gleichmäasig aufsprüht and dann daa Ganze verpresst« Man be·» nötigt dann beträchtlich weniger Bindemittel? bei Harnstoff« formaldehyd-Kondensationaprodukten nur etwa 10 $ und weniger Bindemittel, am mindestens gleich gate Festigkeit zu erzielen«It was found that moldings of the type described with excellent strength are obtained by using significantly less binder if solutions or dispersions of the binder are sprayed on as evenly as possible and then the whole thing is compressed. "You then need considerably less binder?" with urea «formaldehyde condensation products only about 10 $ and less binder, to achieve at least the same gate strength«
Geeignete BindemitteZ^sind insbesondere Kondensat ions» produkte aas Harnstoff and Formaldehyd, ferner beispielsweise härtbare Kondensationsprodukte aus Melamin und Formaldehyd oder aas Phenolen und Formaldehyd, ferner Polyvinylverbindungen, wie Polyvinylchlorid, Polyvinylacetat, Polyacrylester and Mischpolymerisate aus den entsprechenden Monomeren.Suitable binders are in particular condensation products aas urea and formaldehyde, also, for example, hardenable condensation products of melamine and formaldehyde or aas phenols and formaldehyde, also polyvinyl compounds, such as polyvinyl chloride, polyvinyl acetate, polyacrylic ester and copolymers from the corresponding monomers.
line Trooknung dea Materials, wie sie nach dem Tränken der Faserstoffe mit der Lösang oder Dispersion des Bindemittels erforderlich let, erübrigt sich hler. Beim Tränkverfahren istline drying the material as it is after soaking of the fibrous materials with the solution or dispersion of the binder required, no further information is required. The soaking process is
15217/15240 . 2 -15217/15240. 2 -
man zudem bei Verwendung härtbare? Harze aaf das Heisspressen angewiesen. Würde man nämlich der Bindemittellösoag einen Härter gaset ssen, der das Kaltpressen ermöglicht, wo würde beim Trocknen des Materials nach dem Tränken bereits weitgehende Härtang eintretens and beim naehherigen Pressen würde man keinen festen Verband mehr ersielen. Da beim Arbeiten gemäas der Erfindung die Zwischentrocknung wegfällt» kann man aaoh Härter enthaltende Bindemittellösungen oder -dispersionen Terwenden and dann kalt pressen.you also use hardenable? Resins instructed to be hot-pressed. One would namely Bindemittellösoag a hardener Gaset SEN, which enables cold pressing, which would during the drying of the material after soaking already broad s Härtang occur and when one presses naehherigen no fixed association would ersielen more. Since there is no intermediate drying when working according to the invention, you can also use binder solutions or dispersions containing hardeners and then cold-press.
Die erhaltenen Formkörper, z.B. Balken, Träger and insbesondere Flatten» zeichnen eich durch hohe Festigkeit aas. Man kann je nach dem angewandten Pressdruck Erzeugnisse von geringerer oder gröaserer Dichte herstellen. Die Erzeugnisse mit grosser Dichte haben besonders hohe Festigkeit.The moldings obtained, e.g. beams, beams and in particular Flatten »are characterized by their high strength. Man Depending on the applied pressure, products of less can be produced or produce greater density. The products with large Density have particularly high strength.
500 Teile eines Gemisches τοη möglichst längs aufgespaltenem Schilf, Stroh and Binsen, die aaf 3 bis 5 cm Schnittlänge gehäckselt wardenj w&rden mit 10 # eines Kondensationsproduktes aus 1 Teil Harnstoft und 2 Teilen Formaldehyd in 50 bis 60#iger wässeriger Lösung besprüht und bei 9Q° */2 Stunde unter einem Druck τοη 10 kg/om au Platten rerpreset. Die Platten besitzen eine auegezeichnete Festigkeit und eignen sich z«B« zur Herstellung ▼on Zwischenwänden.500 parts of a mixture of reeds, straw and rushes split as long as possible, the cut length of aaf 3 to 5 cm chopped with 10 # of a condensation product from 1 part urine and 2 parts formaldehyde in 50 to 60 # iger Aqueous solution and sprayed at 90 ° * / 2 hours under pressure τοη 10 kg / om au plates rerpreset. The plates have a Excellent strength and are suitable, for example, for production ▼ on partitions.
Setzt man der Bindemittell'ösung einen Härter zu, z.B. ein ea&er reagierendes Sals» so kann man auch kalt vorpressen and erhält Platten yon gleiah guten Eigenschaften.If you add a hardener, e.g. a hardener, to the binder solution ea & er reacting sals »so you can also cold press and receives plates of equally good properties.
100 kg Phenol werden in 120 kg 30#igea wässerigem Formaldehyd gelöst» Die Lus&Qg wird mit ICO g Magnesiumoxid and 1 kg 25$lgem wässerigem Formaldehyd versetzt and solange zum Sieden erhitzt, bie eine Probe beim Abkühlen aof gewöhnliche Temperatur starke Earzabscneidung zeigt. Fach Abkühlen der lösung und Stehen über IT acht wird die oben befindliehe wässerige Schicht abgegossen und das ZBLTuelcbl$ib63&e. Ü®el mit soriel Alkohol veraat^t» dass eine spritzfähige Ιΰβαχ» ext&a&äbfr* %CQ 4£g- eines 5 em la ehe a aas groben100 kg of phenol are dissolved in 120 kg of 30% aqueous formaldehyde. ICO g of magnesium oxide and 1 kg of 25% of aqueous formaldehyde are added to the Lus & Qg and heated to the boil until a sample cools off at the usual temperature and shows strong resin separation. Compartment cooling the solution and standing over it eight, the aqueous layer located above is poured off and the ZBLTuelcbl $ ib63 & e. Ü & rule with soriel alcohol veraat ^ t »that an injectable Ιΰβαχ» ext & a & äbfr *% CQ 4 £ g- a 5 em la ehe a aas coarse
15217/1524015217/15240
Sägespänen und Hobelspänen werden mit soriel Harzlösung möglichst glelchmässig besprüht} daas auf 10 Gewichteteile Holzabfälle 1 Gewichtsteil Phenolhars kommt« Das Material wird dann ausgebreitet */2 bis 1 Stande an der Luft getrocknet. Anschlieasend wird es eine Stunde lang bei 120° gepresst* beispielsweise an Platten von ettta 2 cm Stärke, Die Platten zeichnen sich duroh hohe mechanische Festigkeit und Waaeer« beständigkeit aas.Sawdust and shavings are soriel with resin solution glelchmässig possible sprayed} DAAs to 10 weight parts of wood waste is 1 part by weight Phenolhars "The material is then spread out * / 2 to 1 prior to the air-dried. It is then pressed for one hour at 120 ° *, for example on plates with a thickness of about 2 cm. The plates are characterized by high mechanical strength and water resistance.
Claims (1)
Family
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