ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORSMESMMAKHTNMD..........J0009190-CORR014389969CORRECTED EUROPEAN PATENT APPLICATIONA8A120240807W172deBibliographieenBibliographyfrBibliographieEP23209927.520231114plenen4429642220221128PL202408072024322024062620242620240807202432D21F 11/00 20060101AFI20240522BHEP D21J 1/00 20060101ALI20240522BHEP D21H 21/34 20060101ALI20240522BHEP D21H 23/00 20060101ALI20240522BHEP D21J 1/00 20130101 LI20240517BHEP D21F 11/00 20130101 FI20240517BHEP D21H 21/34 20130101 LI20240517BHEP D21H 13/50 20130101 LI20240525BHEP D21H 15/08 20130101 LI20240525BHEP deVERFAHREN ZUR HERSTELLUNG EINES PLATTENVERBUNDES UNTER VERWENDUNG VON CELLULOSE- UND CARBOB-PARTIKELN MIT ERHÖHTER FEUERBESTÄNDIGKEITenA METHOD OF PRODUCING A PLATE COMPOSITE WITH THE USE OF CELLULOSE AND CARBON PARTICLES WITH INCREASED FIRE RESISTANCEfrPROCÉDÉ DE PRODUCTION D'UN COMPOSITE DE PLAQUE À L'AIDE DE PARTICULES DE CELLULOSE ET DE CARBOB PRÉSENTANT UNE RÉSISTANCE AU FEU ACCRUENONEUniwersytet Przyrodniczy w Poznaniu10128796218P52786EP00Ul. Wojska Polskiego 2860-637 PoznanPLMAZELA, Bartlomiej61-058 PoznanPLGRZESKOWIAK, Wojciech62-023 KamionkiPLPERDOCH, Waldemar63-006 SródkaPLAugustyniak, Magdalena Annaet al101591901Polservice Kancelaria Rzecznikow Patentowych sp. z o.o. Bluszczanska 7300-712 WarszawaPLALATBEBGCHCYCZDEDKEEESFIFRGBGRHRHUIEISITLILTLULVMCMEMKMTNLNOPLPTRORSSESISKSMTRBAKHMAMDTN

A method of producing a plate composite with the use of cellulose and carbon particles with increased fire resistance is that
1.1. particles rich in elemental carbon, i.e. with a carbon content >90%, selected from expanding graphite (EG) and carbon nanotubes (CNT), are dispersed in water in weight ratios ranging from 0.2:1 to 1:0.2. in an aqueous system, the weight ratio of carbon particles to water is from 1:1 to 100:1.
1.2. a cellulose pulp with a concentration of 1-25% in water is produced
1.3. a dispersed suspension of carbon particles is introduced into the cellulose pulp.
1.4. a composite is formed on a paper machine
1.5. the composite is dried and pressed
wherein the EG/CNT dispersion is kept in water for a period of 24 hours, and resulting particle dispersion is homogenized for 30-45 s by means of a homogenizer with a rotation speed from 400 to 4000 rpm until a homogeneous water dispersion is obtained and the homogeneous the particle dispersion is added to the pulp produced in parallel in an amount of 1-75% by weight based on the total mass of the product and the mixture is further grounded for 10 s in the refiner, and cellulose pulp is produced in such a way that the cellulose in the form of sheets is initially comminuted into particles size 1-4 cm2, soaked for 24 hours in deionized water, the weight ratio of cellulose to water is 1:10, and after 24 hours the cellulose is defibrated in a defiberizer and water is added until the total cellulose to water ratio is at the level of 1:50, then the homogeneous pulp is transferred to a sheet forming apparatus and diluted with water to a mass concentration ranging from 2-20%, and cellulose-carbon sheets are formed.