Sinomlando omude wokwenza iphepha le-bamboo eShayina. I-morphology ye-bamboo fiber kanye nokwakheka kwamakhemikhali kukhethekile. Ubude obujwayelekile be-fiber bude, kanti isakhiwo se-fiber cell wall sikhethekile. Ukusebenza kokuthuthukiswa kwamandla ngesikhathi sokugaya kuhle, okunikeza i-bleached pulp izakhiwo ezinhle zokukhanya ze-opacity ephezulu kanye ne-coefficient yokusabalalisa ukukhanya. Okuqukethwe kwe-lignin kwezinto zokusetshenziswa ze-bamboo (cishe ama-23%-32%) kuphezulu, okunquma inani eliphezulu le-alkali kanye nezinga le-sulfidation ngesikhathi sokugaya nokupheka (izinga le-sulfidation ngokuvamile liyi-20%-25%), eliseduze nokhuni lwe-coniferous. Okuqukethwe okuphezulu kwe-hemicellulose kanye ne-silicon kwezinto zokusetshenziswa nakho kuletha ubunzima obuthile ekusebenzeni okuvamile kohlelo lwemishini yokuwasha i-pulp kanye nokuhwamuka kotshwala obumnyama kanye nokuhlushwa. Naphezu kwalokhu, izinto zokusetshenziswa ze-bamboo ziseyizinto zokusetshenziswa ezinhle zokwenza iphepha.
Uhlelo lokuhlanza lwezitshalo zamakhemikhali ezinkulu neziphakathi nendawo zoqalo luzosebenzisa inqubo yokwenza i-TCF noma i-ECF. Ngokuvamile, kuhlanganiswe nokujula kwe-designification kanye ne-oxygen delignification ye-pulping, i-TCF noma i-ECF bleaching technology iyasetshenziswa. Ngokuya ngenani lezigaba zokufiphala, i-bamboo pulp ingaba bleach ibe ngu-88% -90% wokukhanya.
Izicubu zethu ze-bamboo pulp ezixutshwe zonke zifakwe bleach nge-ECF (elemental chlorine free), enokulahleka okuncane kokumhlophe ku-bamboo pulp kanye ne-viscosity ephezulu ye-pulp, ngokuvamile efinyelela ngaphezu kuka-800ml/g. Izicubu zoqalo ezixutshiwe ze-ECF zinekhwalithi engcono ye-pulp, zisebenzisa amakhemikhali amancane, futhi zisebenza kahle kakhulu ngokufiphala. Ngesikhathi esifanayo, uhlelo lwemishini luvuthiwe futhi ukusebenza kokusebenza kuzinzile.
Izinyathelo zenqubo ye-ECF elemental chlorine-free bleaching of bamboo tissues yilezi: okokuqala, umoya-mpilo (02) ungeniswa embhoshongweni we-oxidation ukuze uhlukanise i-oxidative, bese kuthi i-D0 bleaching-washing-Eop extraction-washing-D1 bleaching-washing yenziwa ngokulandelana ngemva kokugeza. Ama-agent amakhemikhali e-bleaching ayinhloko yi-CI02 (i-chlorine dioxide), i-NaOH (i-sodium hydroxide), i-H202 (i-hydrogen peroxide), njll. Ekugcineni, i-pulp e-bleached yakhiwa ukucindezelwa kokuphelelwa amandla kwamanzi. Ubumhlophe bezicubu ze-bamboo pulp ezixutshwe bungafinyelela ngaphezu kwama-80%.
Isikhathi sokuthumela: Aug-22-2024
