MX2010014095A - Aditivos comprendiendo eteres de celulosa para extrusion para ceramica. - Google Patents
Aditivos comprendiendo eteres de celulosa para extrusion para ceramica.Info
- Publication number
- MX2010014095A MX2010014095A MX2010014095A MX2010014095A MX2010014095A MX 2010014095 A MX2010014095 A MX 2010014095A MX 2010014095 A MX2010014095 A MX 2010014095A MX 2010014095 A MX2010014095 A MX 2010014095A MX 2010014095 A MX2010014095 A MX 2010014095A
- Authority
- MX
- Mexico
- Prior art keywords
- process according
- weight
- baking
- ceramic
- masses
- Prior art date
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 16
- 229920003086 cellulose ether Polymers 0.000 title claims abstract description 11
- 238000001125 extrusion Methods 0.000 title claims abstract description 11
- 239000000654 additive Substances 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000004014 plasticizer Substances 0.000 claims description 8
- 239000013530 defoamer Substances 0.000 claims description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 238000007669 thermal treatment Methods 0.000 claims 1
- -1 titanium oxide nitride Chemical class 0.000 description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical class CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 150000002170 ethers Chemical class 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- WRKCIHRWQZQBOL-UHFFFAOYSA-N octyl dihydrogen phosphate Chemical compound CCCCCCCCOP(O)(O)=O WRKCIHRWQZQBOL-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- 229910052580 B4C Inorganic materials 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- CAVCGVPGBKGDTG-UHFFFAOYSA-N alumanylidynemethyl(alumanylidynemethylalumanylidenemethylidene)alumane Chemical compound [Al]#C[Al]=C=[Al]C#[Al] CAVCGVPGBKGDTG-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000005677 ethinylene group Chemical group [*:2]C#C[*:1] 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052615 phyllosilicate Inorganic materials 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001521 polyalkylene glycol ether Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/1305—Organic additives
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- C04B35/5805—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
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Abstract
La presente invención se refiere a aditivos específicos comprendiendo éter de celulosa para mejorar la capacidad de extrusión de masas cerámicas y otras masas, las cuales se endurecen como un resultado de horneado o sinterizado, un proceso de extrusión correspondiente, los extruidos y su uso.
Description
ADITIVOS COM PREN DIENDO ETERES DE CELULOSA PA
EXTRUSION PARA CERAMICA
La presente invención se refiere a aditivos es mprendiendo éter de celulosa para mejorar la capacidad de masas cerámicas y otras masas, las cuales se endurecen sultado de horneado o sinterizado, un proceso de rrespondiente, los extruidos y su uso.
Los éteres de celulosa solubles en agua han sido usados uchos años como agentes de retención de agua, plastifi bricantes en la extrusión de masas cerámicas y otras ma ales se endurecen como un resultado de horneado o sinteriz oducir cuerpos de panal u otros perfiles complicados tructuras finas de manera similar (ver, por ejemplo: James nciples of Ceramics Processing (Principios de procesami írámica John Wile & Sons 1995 Ca ítulo 23: Extrusión an
endurece como un resultado de un proceso de horneado de c eden com prender además materiales catal íticamente activo regaos y agregados de peso ligero.
Las desventajas técnicas y económicas de las masas c ualmente extru ídas y otras masas, las cuales se endurecen sultado de horneado o sinterizado, son presiones de alta extru ales hacen a la operación de los extrusores prematuram onómicos debido al alto desgaste o altos costos de energ í sventaja es una velocidad de extrusión insatisfactoriamente al reduce la capacidad de la planta completa. La masa perimentar muy poco calentamiento como un resultado de erna, debido a que el consumo de agua de enfriam friamiento eléctrico de igual manera deteriora la economía. bería ser capaz de extruirse sin grietas y no formar grietas l secado del perfil extruido en aire y subsecuente hor terizado. La cohesión de las artículas en la masa extruida
odal idad particular, cuando la masa contiene arcilla tal como ra formar un cuerpo de cordierita o mullita , la masa a ser tá comprendida por agua a un pH mayor que 7.
La i nvención proporciona de acuerdo con esto , un proces trusión de masas cerámicas comprendidas por arcilla , la durece como un resultado de horneado o sinterizado, mprende mezclar una masa cerámica u otra masa la cual se rno un resultado de horneado o sinterizado con (A) al meno celulosa, (B) al menos un plastificante, (C) al m sespumante como componentes individuales o como emezclado y subsecuentemente extruirlo, y (D) agua a un p e 7.
La invención de acuerdo con esto proporciona un proces xtrusión de masas cerámicas comprendidas por arcilla , las c idurecen como resultado de horneado o sinterizado, la cual co s cuales se endurecen como un resultado de horneado o sin s cuales comprenden (A) al menos un éter de celulosa , (B) plastificante, (C) al menos un desespumante, y (D) agua ayor que 7.
Para los fines de la presente invención , la masa mprendida por arcilla como un resultado de horneado o si n todas masas las cuales comprenden al menos uno mponentes listados más adelante, el cual puede ser hor nterizado al hornear o sinterizar mediante horneado o sinteriz con adición de otros auxiliares de sinterizado:
alúmina; nitruro de aluminio y carburo de aluminio; rdierita; mulita; carburo de silicio; boruro de silicio; nitruro d óxido de titanio; carburo de titanio; carburo de boro; óxido icatos y silicatos de hoja, tal como talco; metal de silicio; carb gro de humo o gafito; vidrio molido; otros óxidos de metal tal
antes hidráulicos, tales como cemento o yeso y masas bas mento o yeso. Estos ligantes hidráulicos se endurecen sultado de incorporación de agua en el látex de cristales.
Las masas antes mencionadas también comprenden ras, las cuales dejan atrás poros después de horneado o per la masa y de esta manera incrementan la resistencia a la flex
Para los presentes propósitos, las fibras son todos los ras naturales o sintéticas, tales como fibras basadas en mbú, coco, polietileno, polipropileno, poliamida, pol iacri rbono, vidrio, cerámica y otras fibras minerales. Sus long pesores de fibras pueden variarse dentro de amplios rangos.
Los éteres de celulosa adecuados (A) son , en particular, é ulosa iónicos tales como sulfoetilcelulosa o carboximetilce les de los mismos, o éteres de celulosa no iónicos, tal quílcelulosas, hidroxialquilalquilcelulosas o hidroxialqui Icelul
ake.
Los plastificantes adecuados (B) son , por ejemplo, caseína licarboxílicos y sales de los mismos; pol ímeros, los mprenden tanto monomeros de ácido carboxílico o sus nómeros de éter de carboxilato, monomeros de éster carb os derivados de ácido carboxílico, bisacrilatos retícul nómeros similares así como mezclas de los producto ndonados. Entre los plastificantes, se da prefere mopolímeros, copol ímeros y terpolímeros de ácido tacrílico, crotónico, maleico, fumárico y ácidos monofuncio uncionales similares y también sus sales, ésteres y éteres. E éteres son mono(met)acrüatos de polialquilenglicol , ta noacri lato de trietilenglicol y monoacrilato de polieti niendo una masa molar de polietilenglicol de 200-2000 g bién éteres de polialquilenglicol insaturados sin un grupo d ? articularmente referidos: homo olímeros, co ol ím
Los plastificantes particularmente preferidos son copolím idos policarboxílicos y sales de los mismos.
Los desespumantes adecuados © son, en particular, sub ras o mezclas en forma líquida o sólida, las cuales compr nos uno de los siguientes: homopolímeros, copolímeros, terp copolímeros de bloque de alquilenglicol, por ejemplo, con ido de etileno u óxido de propileno, aductos de óxidos de al res de alquilenglicol de alcoholes mayores, ésteres de ácidos teres de ácidos grasos de alquilenglicol, ésteres de ácidos gr rbitol, ésteres de ácidos grasos de polioxialquilen sorbitol, p adición de óxido de etileno y óxido de propileno y acetileno, fosfato tales como fosfato de tributilo, octilfosfato de ilares y también todos los compuestos conteniendo gr liéter o mezclas conteniendo grupos de poliéter, los cuales tie ción desespumante así como mezclas de los producto ncionados. Otros deses umantes útiles inclu en a uéllos c
mbién todos los compuestos conteniendo grupos de poliéter o nteniendo grupos de poliéter, los cuales tienen una sespumante.
Preferencia muy particular es dada a homopol ímeros, cop rpolímeros y copol ímeros de bloque de alqui lenglicol, por eje se en óxido de etileno u óxido de propileno, aductos de ó quileno, éteres de alquilenglicol de alcoholes mayores y tambi s compuestos conteniendo grupos de poliéter o mezclas con upos de poliéter, los cuales tienen un acción desespumante.
Además de los componentes (A) a (D) mencionado portantes para los fines de la invención , las masas tam bién mprender constituyentes adicionales tales como drofobizantes, polvos de redispersión , superabsorbentes bas rilatos reticulados y polisacáridos , lubricantes (por mopol ímeros, copol ímeros y terpolímeros de óxido de poli
La proporción de componente (B) con base en la cantidad ) , (B) y (C) es de preferencia dése 8 hasta 70% en peso, en p preferencia desde 8 hasta 65% en peso, muy particular eferencia desde 8 hasta 60% en peso.
La proporción de componente (C) con base en la cantidad ) , (B) y (C) es de preferencia desde 1 hasta 20% en rticular de preferencia desde 1 hasta 1 7% en pes rticuiarmente de preferencia desde 1 hasta 1 5% en peso.
La cantidad de (A), (B) y (C), vista como una mezcla, usa sa cerámica u otra masa, la cual se endurece como un resu rneado o sinterizado, es normalmente desde 0.3 hasta 1 0% preferencia desde 0.7 hasta 9% en peso, en particular de pr sde 1 hasta 8% en peso, en cada caso basado en la formulad
(A) , (B) y (C) pueden adicionarse a la masa a ser extruid mo una mezcla prefabricada o también mediante adición en alocel VP-M-7701 , Dow Wolff Cellulosics GmbH, Alemania, vi una solución acuosa al 1% a 20°C determinada en un visc acional de Haake: 12400-14400 mPa s.
Como plastificante (B), se hizo uso de Melflux 2651 F emania. Esto es un éter de policarboxilato.
Como desespumante (C), se hizo uso de Agitan P 803, emie, Alemania. Este es un desespumante basado en alea icado a un material de soporte.
El aditivo fue preparado al mezclar los componentes (A) relación 67:28:5, mientras que los ensayos comparativos 9 ieron para ver las diferencias entre un sistema puro contenie ) y un sistema de compuesto conteniendo los tres ingredient ).
ocedimiento para los experimentos de extrusión
100 artes en eso de una formulación de cordierita com
friado por agua , ma ntenido a 20°C (Hándle 8D, diámetro de to cm , de Hándle, Mühlacker, Alemania) . La masa fue extruida una placa perforada y se pasó a través de la cámara de va sgasificación. Se forzó entonces en primer lugar (es esionó a través de un tamiz teniendo un tamaño de malla de con el fin de liberar la masa de agregados) y subsecuente truyó a través de un dado (perfil plano, 4 cm x 1 cm) y se d bre una banda transportadora . Con el fin de medir la co sistencia en verde del perfil, se permitió que el perfil corriera nda transportadora para continuar corriendo de manera h bre la banda después de haber pasado el extremo de la ba gitud de! perfil "que cuelga sobre" el extremo de la banda tes de q ue la banda se rompiera bajo su propio peso. La ntinuación da la longitud medida mínima y máxima de al m rtes extruidas subsecuentemente de los perfiles del mismo cantidad de a ua W/S = 0.32 si nifica 0.32 k de a ua or rzadas y fue expresada en términos de dureza de Shore. T asas extruidas en esta forma fueron endurecidas a una con ostumbrada (dureza de Shore = 12-12.6 kg/m2) por medio oporción de agua a sólidos (Proporción W/S) con base querimiento de agua.
La presión es la presión media justo antes del paso de la vés del dado. Se midió en bar (105 Pa).
Las temperaturas resultantes del perfil plano extruido ( eron medidas y todas estuvieron entre 25 y 28°C. La temper masas forzadas y extruidas fue medida por medio de un ter rarrojo no de contacto después de dejar el dado; estas temp rresponden a aquéllas medidas vía el sensor de temperatura i el cabezal de dado.
Para medir la resistencia en verde, se usó la longitud ue cuelga" sobre la banda (en cm). Es la longitud del perfil, e la ru tura sucediera ba o su ro io eso. P a
esultados experimentales
La comparación del ensayo 1 (compuestos-sistema) con e (sistema 1 00: 0: 0 con 1 00% de éter de celulosa) muestra mejo sistencia en verde a pH 7 al cambiar al sistema de comp ngitud del perfil aumentó desde 1 1 .5 - 1 3.5 cm hasta 1 7 mbiar el pH en condiciones alcalinas en ambos siste sistencia en verde es incrementada (en el sistema de éter de ro ver el ensayo 9 y 1 0, en el sistema de éter de cel ulos sayo 1 y 2-5) , pero en el compuesto-sistema el efecto e ayor que en el sistema de éter de celulosa pura (com parar el n el ensayo 1 0, am bos adicionado 25 g de N H3) . Los r uestran claramente que la longitud del perfil que cuelga sobre tá aumentando con un pH >7 , lo cual significa en consecuenci hesión y resistencia en verde es incrementada si el pH de ag ra hacer la masa cerámica es >7. Las condiciones acidas (
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Claims (1)
- REIVINDICACIONES Un proceso para la extrusión de masas cerámicas u otra cuales se endurecen como un resultado de horneado o sin cual comprende mezclar una masa cerámica comprendía por a al se endurece como un resultado de horneado o sinterizado menos un éter de celulosa, (B) al menos un plastificante, (C) desespumante como componentes individuales o como emezclado, y (D) agua teniendo un pH mayor qu bsecuentemente extruyéndola. El proceso de acuerdo con la reivindicación 1, en donde rámica comprendida por arcilla se forma al calentar cor lita. El proceso de acuerdo con la reivindicación 1 o 2, en d eres de celulosa teniendo una viscosidad desde 400 hasta a s, determinada en una solución acuosa al 2% en peso a utlenglicol son usados como desespumante basado en poliéte El proceso de acuerdo con cualquiera de las reivindicaci en donde, con base en la cantidad total de (A), (B) y oporción de componente (A) es desde 10 hasta 91 % en peso, l componente (B) es desde 8 hasta 70% en peso y aqu mponente (C) es desde 1 hasta 20% en peso. El proceso de acuerdo con cualquiera de las reivindicaci en donde la cantidad de (A), (B) y (C), vista como una mezcl desde 1 hasta 8% en peso con base en la formulación tot sa cerámica u otra masa la cual se endurece como un resu rneado o sinterizado. El proceso de acuerdo con cualquiera de las reivindicaci en donde un tratamiento térmico del extruido es realizado de extrusión. . Un extruido obtenible mediante un proceso de acue alquiera de las reivindicaciones 1 a 9. . El método de la reivindicación 1 , en donde el pH del ustado mediante la adición de amoníaco. . El método de la reivindicación 1 , en donde el deses mprende un desespumante de sil icón. RESU M E N La presente invención se refiere a aditivos es mprendiendo éter de celulosa para mejorar la capacidad de masas cerámicas y otras masas, las cuales se end urecen sultado de horneado o sinterízado, un proceso de rrespondiente, los extruidos y su uso.
Applications Claiming Priority (1)
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PCT/IB2008/003475 WO2009153617A1 (en) | 2008-06-19 | 2008-06-19 | Additives comprising cellulose ethers for ceramics extrusion |
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MX2010014095A true MX2010014095A (es) | 2011-01-21 |
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MX2010014095A MX2010014095A (es) | 2008-06-19 | 2008-06-19 | Aditivos comprendiendo eteres de celulosa para extrusion para ceramica. |
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US (1) | US8545614B2 (es) |
EP (1) | EP2303794B1 (es) |
JP (1) | JP5653349B2 (es) |
KR (1) | KR101483330B1 (es) |
CN (1) | CN102066284A (es) |
MX (1) | MX2010014095A (es) |
PL (1) | PL2303794T3 (es) |
WO (1) | WO2009153617A1 (es) |
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EP2563564B1 (en) * | 2010-04-26 | 2016-11-02 | Dow Global Technologies LLC | Composition for extrusion-molded bodies |
WO2012064512A1 (en) * | 2010-11-08 | 2012-05-18 | Dow Global Technologies Llc | Composition for extrusion-molded bodies comprising a methyl cellulose |
KR20120079729A (ko) * | 2011-01-05 | 2012-07-13 | 삼성정밀화학 주식회사 | Scr 촉매의 세라믹 담체용 유기 바인더 조성물 및 이를 포함하는 scr 촉매용 세라믹 담체 |
FR2974092B1 (fr) * | 2011-04-13 | 2014-12-05 | Commissariat Energie Atomique | Procede de fabrication de composants par pim, base sur l'utilisation de fibres ou fils organiques, avantageusement couplee a l'utilisation de co2 supercritique |
RU2560048C1 (ru) * | 2014-06-06 | 2015-08-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный архитектурно-строительный университет" КГАСУ | Модифицированная легкоплавкая глинистая масса |
KR101825926B1 (ko) * | 2017-05-23 | 2018-02-06 | 롯데정밀화학 주식회사 | Scr 촉매의 세라믹 담체용 유기 바인더 조성물 및 이를 포함하는 scr 촉매용 세라믹 담체 |
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BE793984A (fr) * | 1972-01-14 | 1973-05-02 | Foseco Int | Nouvelle fabrication de produits ceramiques poreux |
US3991029A (en) | 1973-05-03 | 1976-11-09 | E. I. Du Pont De Nemours And Company | Ceramic compositions and articles made therefrom |
US4001028A (en) | 1974-05-28 | 1977-01-04 | Corning Glass Works | Method of preparing crack-free monolithic polycrystalline cordierite substrates |
US4267086A (en) | 1976-01-07 | 1981-05-12 | Ford Motor Company | Sacraficial binders for molding particulate solids |
JPS5936278A (ja) | 1982-08-25 | 1984-02-28 | 深沢 克正 | 化学粘土 |
US4551295A (en) * | 1984-04-26 | 1985-11-05 | Corning Glass Works | Process for mixing and extruding ceramic materials |
JP2796349B2 (ja) * | 1989-04-24 | 1998-09-10 | 日本発条株式会社 | セラミックスの成形方法 |
JPH04209747A (ja) * | 1990-12-04 | 1992-07-31 | Shin Etsu Chem Co Ltd | シングルスクリュー式押出成形用セラミックス材料 |
JPH06116012A (ja) * | 1992-10-08 | 1994-04-26 | Toyota Motor Corp | 型内押出用可塑性材料 |
JPH08177276A (ja) * | 1994-12-26 | 1996-07-09 | Miyagawa Kasei Ind Co Ltd | ドアハンドル用グリップおよびその製造方法 |
US5966582A (en) | 1996-10-28 | 1999-10-12 | Corning Incorporated | Method for rapid stiffening of extrudates |
US5824143A (en) | 1996-11-04 | 1998-10-20 | Corning Incorporated | Method for compounding ceramic powder batches |
DE19828491A1 (de) * | 1998-06-26 | 1999-12-30 | Degussa | Formkörper auf Basis von Siliciumdioxid |
JP3961683B2 (ja) * | 1998-07-07 | 2007-08-22 | 株式会社日本自動車部品総合研究所 | コーディエライトハニカム構造体の製造方法およびハニカム構造体成形用成形助剤 |
JP3343087B2 (ja) * | 1999-02-03 | 2002-11-11 | 日本碍子株式会社 | コージェライト質セラミックハニカム構造体の製造方法 |
JP2000301516A (ja) * | 1999-04-22 | 2000-10-31 | Nippon Soken Inc | セラミックスハニカム構造体の製造方法 |
JP2002293613A (ja) * | 2001-03-29 | 2002-10-09 | Kyocera Corp | グリーン色透光性アルミナ多結晶体およびその製造方法 |
US7425297B2 (en) * | 2002-03-25 | 2008-09-16 | Dow Global Technologies Inc. | Method of forming mullite bodies |
JP2004292178A (ja) * | 2003-03-25 | 2004-10-21 | Gifu Prefecture | 窒化アルミニウム顆粒の製造方法及び製造装置 |
DE102005030521A1 (de) | 2005-06-30 | 2007-01-11 | Wolff Cellulosics Gmbh & Co. Kg | Celluloseetherzusammensetzung für die Extrusion anorganischer Formkörper |
-
2008
- 2008-06-19 CN CN2008801298260A patent/CN102066284A/zh active Pending
- 2008-06-19 US US12/993,026 patent/US8545614B2/en active Active
- 2008-06-19 MX MX2010014095A patent/MX2010014095A/es active IP Right Grant
- 2008-06-19 WO PCT/IB2008/003475 patent/WO2009153617A1/en active Application Filing
- 2008-06-19 KR KR20107028440A patent/KR101483330B1/ko active IP Right Grant
- 2008-06-19 JP JP2011514135A patent/JP5653349B2/ja not_active Expired - Fee Related
- 2008-06-19 EP EP08874700.1A patent/EP2303794B1/en not_active Not-in-force
- 2008-06-19 PL PL08874700T patent/PL2303794T3/pl unknown
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US20110071023A1 (en) | 2011-03-24 |
CN102066284A (zh) | 2011-05-18 |
US8545614B2 (en) | 2013-10-01 |
EP2303794B1 (en) | 2017-03-15 |
JP2011524846A (ja) | 2011-09-08 |
EP2303794A1 (en) | 2011-04-06 |
PL2303794T3 (pl) | 2017-08-31 |
JP5653349B2 (ja) | 2015-01-14 |
KR20110020266A (ko) | 2011-03-02 |
WO2009153617A1 (en) | 2009-12-23 |
KR101483330B1 (ko) | 2015-01-15 |
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