He rauemi maha ngā whakamahinga o te cellulose acetate, ā, he whānui ngā whakamahinga. I roto i te umanga tupeka, ko te cellulose acetate te rauemi matua mō ngā tātari hikareti nā te mea he pai rawa te mahi tātari. Ka whakamahia hoki i roto i te umanga kiriata me te kirihou hei hanga kiriata whakaahua, anga mō ngā tirohanga, me ngā kakau taputapu. Hei tāpiri, he rauemi matua te cellulose acetate mō ngā kiriuhi, tae atu ki ngā kiriuhi tātari me ngā huānga osmosis whakamuri, nā te mea he pai te uruhanga me te whiriwhiri. Nā tōna pirau koiora me tōna ngāwari ki te urutau, kei te whai wāhi tonu te cellulose acetate ki ngā mahi hanga tuku iho me ngā mahi taiao hou.
Te Tukanga Tātari Acetate Cellulose
1. Te Whakarite Rauemi Mata me te Whakapūtanga
Ka tīmata te tukanga kipenupenu rakauheruro, ka purea hei tango i te lignin, te hemicellulose, me ētahi atu poke. Kātahi ka tauhohehia te cellulose kua purea kiwaikawa acetic, anhydride acetic, me tewhakakorikorihei whakaputa i ngā ester cellulose acetate. Mā te whakahaere i te nui o te whakakapinga, ka taea te whiwhi i ngā momo rerekē pēnei i te diacetate, te triacetate rānei.
2. Te Whakarite i te Otinga Whakama me te Hurihuri
I muri i te acetylation, ka whakakorengia te ranunga tauhohenga, ā, ka tangohia ngā hua taha. Ka horoia te cellulose acetate, ka whakamarokehia, ā, ka whakarewaina ki roto i tete acetone, te ranunga acetone-wai rāneihei hanga i tētahi otinga hurihuri ōrite. I tēnei wāhanga, ka pāngia te otinga e tetātarihei tango i ngā matūriki me ngā tiēre kāore anō kia rewa, kia mau ai te ōritetanga me te pumau.
3. Te Hanganga me te Whakaoti Muka
Ka tukatukahia te otinga hurihuri mā te whakamahi i tetikanga miro maroke, ka tukuna mā roto i ngā miro hurihuri, ka whakapakeketia hei miro i te wā e mimiti haere ana te whakarewa. Ka kohia ngā miro, ka totorohia, ka hangaia hei tō tonu, hei miro rānei. Ka whakamahia ngā maimoatanga i muri i te mahi pēnei i te totoro, te whakakoi, te whakaoti rānei hei whakarei ake i ngā āhuatanga o te muka, kia pai ai mō ngā tono i roto ihikaretingā tātari, ngā kakahu, me ngā muka motuhake.
Pepa Tātari Tātari Taiepa Nui
Pepa tātari raupapa SCY
He tino whai hua tēnei pepa tātari, me tōna hanganga cellulose me te kapia cationic, mō te tātari i ngā otinga cellulose acetate. Ka whakaratohia he kaha miihini teitei, he pūmau te porosity, me te tango pono i ngā poke. Ko te iti o te ihirangi kapia polyamide epoxy (<1.5%) ka whakarite i te hototahitanga me te haumaru i roto i te tukatuka cellulose acetate, ka āwhina ki te tango i ngā matūriki angiangi, ngā kirikiri, me ngā poke kore e rewa, me te pupuri tonu i te pumau matū me te tutuki i ngā paerewa haumaru kai me te rongoā.
Ngā Painga
Te Whai Hua o te Tātari– Ka tango whai hua i ngā matūriki angiangi, ngā kirikiri, me ngā poke kore e rewa i roto i ngā wairewa cellulose acetate.
Kaha Pūkaha Mīhini– Mā te kaha pahū ≥200 kPa ka roa te mau me te mahi pumau i raro i te pēhanga.
PūmauPūngao– Mā te uruhanga hau whakahaeretia (25–35 L/㎡·s) ka puta he rerenga pono me ngā hua tātari ōrite.
Whakamutunga
He rauemi matua te cellulose acetate e whakamahia ana i roto i ngā tātari, ngā kiriata, ngā kirihou, me ngā kiriuhi, he mea nui mō tōna mahi me tōna pirau. I te wā e hangaia ana, he mea nui te tātari whai hua hei whakarite i te parakore me te ōritetanga.
Te Taiepa NuiRaupapa SCYtātaripepaka puta he hua tino pai mehe pai te tātari, he pakari te mau, ā, he pumau te pūngaoHe iti te ihirangi kapia mō te hototahitanga tino pai, koinei te whiringa pono mō te tukatuka cellulose acetate i roto i ngā ahumahi kai, rongoā, me te matū.
