Whakarōpūtanga Cellulose Ether
Ko te cellulose ether he kupu whānui mō te raupapa o ngā hua i puta mai i te tauhohenga o te cellulose alkali me te kaihoko etherifying i raro i ētahi tikanga. Ina whakakapia te cellulose alkali ki ngā kaihoko etherifying rerekē, ka puta he cellulose ethers rerekē.
E ai ki ngā āhuatanga ionization o ngā whakakapinga, ka taea te wehewehe i ngā cellulose ethers ki ngā wāhanga e rua: ionic (pērā i te carboxymethyl cellulose) me te nonionic (pērā i te methyl cellulose).
E ai ki te momo whakakapinga, ka taea te wehewehe i te cellulose ether ki te monoether (pērā i te methyl cellulose) me te ether whakauru (pērā i te hydroxypropyl methyl cellulose).
E ai ki ngā rerekētanga o te wairewatanga, ka taea te wehewehe ki te wairewatanga wai (pērā i te hydroxyethyl cellulose) me te wairewatanga whakarewa waro (pērā i te ethyl cellulose).
Ko ngā etera cellulose wairewa-wai e whakamahia ana i roto i ngā moata maroke-ranu ka wehea ki ngā etera cellulose wairewa-tere me ngā etera cellulose wairewa-roa i tukatukahia ki te mata.
Kei hea ō rātou rerekētanga? Ā, me pēhea te whirihora maeneene hei waihanga i tētahi otinga wai 2% hei whakamātautau i te matotoru?
He aha te maimoatanga mata?
Pānga ki te cellulose ether?
tuatahi
Ko te maimoatanga mata he tikanga hanga horihori i tētahi paparanga mata ki runga i te mata o tētahi rauemi turanga, he rerekē ngā āhuatanga ā-pūkaha, ā-tinana me te matū i tērā o te turanga.
Ko te kaupapa o te maimoatanga mata o te cellulose ether he whakaroa i te wā e whakakotahihia ai te cellulose ether ki te wai hei whakatutuki i ngā whakaritenga whakamātotoru puhoi o ētahi moata peita, ā, hei whakanui ake hoki i te ātete waikura o te cellulose ether me te whakapai ake i te pumau o te rokiroki.
Ko te rerekētanga ina whirihorahia te wai matao ki te wairewa wai 2%:
Ka tere te marara o te cellulose ether kua maimoatia ki te mata i roto i te wai matao, ā, ehara i te mea ngāwari ki te whakakotahi nā te puhoi o te matotoru;
Nā te tere o te matotoru o te cellulose ether, ki te kore e maimoatia te mata, ka matotoru i mua i te marara katoa ki te wai matao, ā, ka ngāwari ki te haaputuputu.
Me pēhea te whirihora i te etera cellulose kāore i tukatukahia ki te mata?
1. Tuatahi, tāpirihia he nui o te cellulose ether kāore i tukatukahia ki te mata;
2. Kātahi ka tāpirihia he wai wera ki te 80 nekehanga Celsius, ko te taumaha he kotahi hautoru o te rahinga wai e hiahiatia ana, kia pupuhi katoa ai, kia marara noa atu ai;
3. Muri iho, ringihia mārire te wai matao, ko te taumaha he rua hautoru o te toenga wai e hiahiatia ana, me whakaoho tonu kia piri mārire, ā, e kore e pupū;
4. Hei whakamutunga, me te taumaha ōrite, whakanohoia ki roto i te kaukau wai pāmahana pumau kia heke te pāmahana ki te 20 nekehanga Celsius, kātahi ka taea te whakahaere i te whakamātautau matotoru!
Te wā tuku: Hui-tanguru-02-2023