Ubuchwepheshe bokudosa kwe-graphite obunwebekayo be-KraussMaffei buvumela okokusebenza ukuthi kusetshenziswe njengesivimbeli umlilo, indawo noma isengezo kuzingxube eziwuketshezi.
Izidingo zokumelana nomlilo wezingxenye ze-polyurethane foam ziyanda emhlabeni wonke, kokubili emikhakheni yezimoto neyezimboni, kanye nangenxa yezidingo zokulawula. Ukuze kuhlangatshezwane nalesi sidingo, uKraussMaffei (eMunich, eJalimane) umemezele ukuthi uzokwethula uhlelo oluphelele lokucubungula ingcindezi ephezulu yegraphite enwebekayo ukuze kuzuzwe izinto ezisezingeni eliphezulu kanye nokusebenza kahle kwenqubo, kanti umbukiso weCleaner Production uzoba seDüsseldorf, eJalimane kusukela ngo-Okthoba 16 kuya 2017 unyaka. 19.
"I-graphite enwebekayo iyi-filler engabizi kakhulu enikeza izinzuzo ezicacile zezinhlelo zokusebenza eziningi ezizenzakalelayo," kuchaza u-Nicholas Bale, uMongameli we-Reaction Equipment Division e-KraussMaffei. "Ngeshwa, le nto iyazwela ekucindezelekeni komshini ngesikhathi sokucutshungulwa."
Ikhanda elisanda kuthuthukiswa le-KraussMaffei elixuba ingcindezi ephezulu eline-low-pressure bypass kanye nesiteshi esikhethekile esixutshwa ngaphambili sokudosa i-graphite ekhulisayo sikwenza kube enye indlela esebenza kahle kakhulu noma isengezo ezithasiselweni eziwuketshezi njengesinqamuleli somlilo. Amaketanga ezinqubo ezizenzakalelayo ngokugcwele anciphisa izikhathi zomjikelezo wengxenye futhi andise ukusebenza kahle kohlelo lonke.
U-KraussMaffei uthi izinzuzo zokuxutshwa komjovo we-high-pressure countercurrent for machining ukunemba kwezinhlelo zegwebu le-polyurethane ezisebenza kakhulu zingase zisetshenziswe ezinhlelweni lapho igraphite enwebekayo isetshenziswa njengesigcwalisi. Lokhu kubikwa ukuthi kwakha isisekelo sokunciphisa izikhathi zomjikelezo kanye nokwandisa ukusebenza kahle kokukhiqiza. Kule nqubo, ngokungafani nokucubungula okuphansi kwengcindezi, ikhanda lokuxuba elizihlanzayo kuthiwa liqeda isidingo sokuhlanza ngemva komjovo ngamunye. UKraussMaffei uthi lokhu konga izinto kanye nesikhathi sokukhiqiza futhi kusiza ekugcineni ikhwalithi yomkhiqizo engaguquki, kuyilapho kususa izindleko zokuhlinzeka nokulahlwa kwezinto ezishaywayo. Ukuxubana kwengcindezi ephezulu nakho kuzuza amandla aphezulu okuxuba. Lokhu kungasetshenziswa ukunciphisa isikhathi somjikelezo.
Lobu buchwepheshe busekelwe kumakhanda okuhlanganisa ama-graphite akhethekile anwebekayo. Ikhanda elisha lokuxuba lisekelwe ekhanda lokuxuba eliphezulu le-KraussMaffei. Isistimu ifakwe i-bypass enengcindezi ephansi ye-cross-section eyengeziwe futhi yakhelwe ukucubungula i-graphite enwebekayo. Ngakho-ke, ukucindezelwa komshini okwenziwa ezinhlayiyeni zegraphite ezikhulayo phakathi kwemijikelezo yemijikelezo elandelanayo ye-polyol eshajiwe kuyancishiswa. Ngaphambi nje kokuthi kuqale ukuthululwa, izinto ezisetshenziswayo zizungeza ku-nozzle, zidale ingcindezi. Ngakho-ke, i-filler ingaphansi kwengcindezi encane yemishini. Ngalobu buchwepheshe, amazinga aphezulu okugcwalisa angenzeka, kuye ngezidingo kanye nesistimu yempahla eluhlaza, kuze kube ngaphezu kwe-30% ngesisindo se-polymer. Ngakho-ke, ingafinyelela izinga eliphezulu lokumelana nomlilo UL94-V0.
Ngokusho kukaKraussMaffei, ingxube ye-polyol kanye ne-graphite ekhulayo ilungiswa esiteshini esikhethekile sokuxuba. Ama-blenders akhethekile ahlanganisa ngokulinganayo ukugcwaliswa ngezithako eziwuketshezi. Lokhu kwenziwa ngendlela emnene, ngaleyo ndlela kugcinwe ukwakheka nobukhulu bezinhlayiya zegraphite ezinwebekayo. Umthamo uyazenzakalela futhi isisindo se-polyol singakhuphuka size sifike ku-80%, kuqinisekiswe ikhwalithi engaguquki. Ukwengeza, ukukhiqiza kuba okuhlanzekile futhi kusebenza kahle njengoba ukuphathwa ngesandla, ukukala nokugcwalisa izinyathelo kususwa.
Phakathi nenqubo ye-premixing, isilinganiso sokuxuba sokwandisa i-graphite nezinye izakhi singasetshenziswa ukwandisa isisindo nevolumu yezingxenye ngaphandle kokuyekethisa izakhiwo ezivimbela umlilo.
Isikhathi sokuthumela: Oct-09-2023