Sinomlando omude wokwenza iphepha loqalo eChina. I-bamboo fibre morphology kanye nokwakheka kwamakhemikhali kukhethekile. Isilinganiso sobude be-fibre side, futhi i-fiber cell wall microstructure ikhethekile. Ukusebenza kokuthuthukiswa kwamandla ngesikhathi sokudonsa kuhle, kunikeza i-pulp e-bleached izindawo ezinhle zokubonwa kwe-opacity ephezulu kanye ne-coefficient yokuhlakaza ukukhanya. Okuqukethwe kwe-lignin yezinto zokusetshenziswa zoqalo (cishe 23% -32%) kuphezulu, okunquma inani eliphakeme le-alkali kanye neziqu ze-sulfidation ngesikhathi sokudonsa nokupheka (i-sulfidation degree ngokuvamile i-20% -25%), eseduze nezinkuni ze-coniferous. . Okuqukethwe okuphezulu kwe-hemicellulose kanye ne-silicon yezinto zokusetshenziswa kuletha ubunzima obuthile ekusebenzeni okujwayelekile kokuwashwa kwe-pulp kanye nokuhwamuka kotshwala olumnyama nohlelo lwemishini yokuhlushwa. Naphezu kwalokhu, izinto zokusetshenziswa ze-bamboo ziseyinto enhle yokwenza 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 uhlonzwe i-oxidative, bese kuthi i-D0 bleaching-washing-Eop extraction-washing-D1 bleaching-washing iyenziwa. 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
