I ngā tau tata nei, me te whakatinanatanga āta haere o ngā kaupapa here e tika ana mō te piri ki te ariā whanaketanga pūtaiao me te hanga i tētahi hapori penapena rauemi, kei te anga whakamua te moata hanga o tōku whenua ki tētahi panoni mai i te moata tuku iho ki te moata maroke-whakaranu, ā, kua tere te whanaketanga o te umanga moata maroke-whakaranu hanga. ara o. Hei ranunga tino nui i roto i te hanga hua moata maroke-whakaranu, he mea nui te cellulose ether ki te mahi me te utu o te moata maroke-whakaranu. E rua ngā momo cellulose ether: ko tētahi he ionic, pērā i te sodium carboxymethyl cellulose (CMC), ā, ko tētahi he kore-ionic, pērā i te methyl cellulose (MC), hydroxyethyl cellulose (HEC), Hydroxypropyl cellulose (HPMC), me ētahi atu. I tēnei wā, ko te nuinga o ngā hua cellulose ether o te ao e whakamahia ana i roto i ngā rauemi hanga. Nā te tere o te whanaketanga o te umanga moata maroke-whakaranu, kua eke te cellulose ether o tōku whenua ki te rohe, ā, kua pakaru te āhua o ngā hua ke e whakahaere ana i te mākete. I te piki haere o te rongonui o te whakamahinga o ngā hua moata maroke-whakaranu, ka noho tōku whenua hei kaihanga moata maroke-whakaranu nui rawa atu o te ao, ka piki ake te whakamahinga o te cellulose ether, ā, ka piki ake anō hoki ōna kaihanga me ōna momo hua. Ko te mahi hua o te cellulose ether i roto i te moata maroke-whakaranu kua waiho hei arotahi mā ngā kaihanga me ngā kaiwhakamahi.
Ko te āhuatanga tino nui o te cellulose ether ko tōna pupuri wai i roto i ngā rauemi hanga. Ki te kore e tāpirihia he cellulose ether, ka maroke wawe te paparanga angiangi o te moata hou, ā, kāore e taea e te sima te whakamakuku i te ara noa, ā, kāore e taea e te moata te whakapakeke me te whakatutuki i te piri pai. I taua wā anō, mā te tāpiri i te cellulose ether ka pai te kirihou me te ngāwari o te moata, ā, ka whakapai ake i te kaha piri o te moata. Me kōrero tātou mō te pānga ki te whakamahinga o te moata maroke-ranu mai i te mahi hua o te cellulose ether.
1. Te pai o te cellulose ether
Ka pā te pai o te cellulose ether ki tōna wairewatanga. Hei tauira, ko te iti o te pai o te cellulose ether, ko te tere o tōna wairewatanga ki te wai, ā, ka pai ake te pupuri wai. Nō reira, me whakauru te pai o te cellulose ether hei tētahi o ngā āhuatanga rangahau. I te nuinga o te wā, kaua e neke atu i te 8.0% te pai o te toenga tātari o te cellulose ether e neke atu ana i te 0.212mm.
2. Te tere o te whakaheke taumaha
Ko te tere whakaheke taumaha maroke e pā ana ki te ōrau o te papatipu o te rauemi ngaro i roto i te papatipu o te tauira taketake ina whakamaroketia te cellulose ether i tētahi pāmahana. Mō tētahi kounga o te cellulose ether, he nui rawa te tere whakaheke taumaha maroke, ka whakaiti i te ihirangi o ngā kai hohe i roto i te cellulose ether, ka pā ki te pānga tono o ngā umanga o raro, ka piki ake te utu hoko. I te nuinga o te wā, ko te whakaheke taumaha i te whakamaroketia o te cellulose ether kāore e neke atu i te 6.0%.
3. Te nui o te pungarehu whanariki o te cellulose ether
Mō tētahi kounga motuhake o te cellulose ether, he nui rawa te ihirangi pungarehu, ka whakaiti i te ihirangi o ngā kai hohe i roto i te cellulose ether, ā, ka pā ki te pānga tono a ngā umanga o raro. Ko te ihirangi pungarehu whanariki o te cellulose ether he mehua nui mō tōna ake mahi. I te whakakotahitanga me te āhua whakaputa o nāianei o ngā kaihanga cellulose ether o tōku whenua, ko te tikanga kaua e neke ake i te 2.5% te ihirangi pungarehu o te MC, HPMC, HEMC, ā, kaua e neke ake i te 10.0% te ihirangi pungarehu o te HEC cellulose ether.
4. Te matotoru o te cellulose ether
Ko te pupuri wai me te pānga matotoru o te cellulose ether e whakawhirinaki ana ki te matotoru me te horopeta o te cellulose ether i tāpirihia ki te paru sima.
5. Te uara pH o te cellulose ether
Ka heke haere te matotoru o ngā hua cellulose ether i muri i te penapena ki te pāmahana teitei ake, mō te wā roa rānei, inā koa mō ngā hua matotoru teitei, nō reira me whakawhāiti te pH. I te nuinga o te wā, he mea tika kia whakahaeretia te awhe pH o te cellulose ether ki te 5-9.
6. Te tuku mārama o te cellulose ether
Ka pā tika te whakawhiti mārama o te cellulose ether ki tōna whakamahinga i roto i ngā rauemi hanga. Ko ngā mea matua e pā ana ki te whakawhiti mārama o te cellulose ether ko: (1) te kounga o ngā rauemi mata; (2) te pānga o te alkaliization; (3) te ōwehenga tukanga; (4) te ōwehenga whakarewa; (5) te pānga neutralization.
E ai ki te pānga whakamahi, kaua e iti iho i te 80% te tuku mārama o te cellulose ether.
7. Te pāmahana tiēre o te cellulose ether
Ko te nuinga o te wā, ka whakamahia te cellulose ether hei whakakīkī, hei whakapūmau kirihou, hei pupuri wai hoki i roto i ngā hua sima, nō reira, he mea nui te matotoru me te pāmahana tiēre hei ine i te kounga o te cellulose ether. Ka whakamahia te pāmahana tiēre hei whakatau i te momo cellulose ether, e pā ana ki te nui o te whakakapinga o te cellulose ether. Hei tāpiri, ka pā hoki te tote me ngā poke ki te pāmahana tiēre. Ina piki te pāmahana o te otinga, ka ngaro haere te wai o te cellulose polymer, ā, ka heke te matotoru o te otinga. Ina tae ki te pūwāhi tiēre, ka maroke rawa te polymer, ā, ka hanga he tiēre. Nō reira, i roto i ngā hua sima, ko te pāmahana ka whakahaeretia i raro iho i te pāmahana tiēre tuatahi. I raro i tēnei āhuatanga, ko te iti o te pāmahana, ko te teitei ake o te matotoru, ā, ko te kitea nuitia o te pānga o te matotoru me te pupuri wai.
Wā tuku: 27-Pepuere-2023