He aha ngā āhuatanga o te carboxymethyl cellulose?

He aha ngā āhuatanga o te carboxymethyl cellulose?

Whakautu:Carboxymethyl celluloseHe rerekē anō hoki ngā āhuatanga o tēnei matū nā runga i ōna nekehanga rerekē o te whakakapinga. Ko te nekehanga o te whakakapinga, e mōhiotia ana ko te nekehanga o te etherification, ko te tikanga ko te maha toharite o te H i roto i ngā rōpū OH hydroxyl e toru kua whakakapia e CH2COONa. Ina he 0.4 H i roto i te rōpū hydroxyl o ngā rōpū hydroxyl e toru i runga i te mowhiti cellulose-based kua whakakapia e te carboxymethyl, ka taea te whakarewa ki te wai. I tēnei wā, ka kiia ko te nekehanga whakakapinga 0.4, ko te nekehanga whakakapinga waenga rānei (nekehanga whakakapinga 0.4-1.2).

Ngā āhuatanga o te carboxymethyl cellulose:

(1) He paura mā (he kakano matotoru rānei, he muka), kāore he reka, kāore he kino, he ngāwari ki te wairewa ki te wai, ā, he mārama te āhua piri, ā, he kūpapa, he paku kawakore rānei te wairewa. He pai te horapa me te kaha here.

(2) Ka taea te whakamahi i tōna wairewa hei emulsifier o te momo hinu/wai me te momo wai/hinu. He kaha anō hoki tōna ki te emulsifying mō te hinu me te ware pi, ā, he emulsifier kaha.

(3) Ina tūtaki te otinga ki ngā tote konganuku taumaha pērā i te acetate mata, te konupūmā ferric, te nitā hiriwa, te konupūmā stannous, me te pāhare pākawa dichromate, ka puta pea he ua. Heoi, haunga te acetate mata, ka taea tonu te whakarewa anō i roto i te otinga konutai hauwai, ā, ko ngā ua pērā i te barium, te rino me te konumohe ka ngāwari te whakarewa i roto i te otinga hauwai ammonium 1%.

(4) Ina tūtaki te otinga ki te waikawa waro me te waikawa kore-waro, ka puta pea te ua. E ai ki te kitenga, ina 2.5 te uara pH, kua tīmata te paru me te ua. Nō reira, ka taea te kī ko te pH 2.5 te pūwāhi matua.

(5) Mō ngā tote pēnei i te konupūmā, te konupora me te tote tēpu, kāore he ua e puta, engari me whakaiti te matotoru, pēnei i te tāpiri i te EDTA, te phosphate rānei me ētahi atu matū hei ārai i tēnei.

(6) He nui te pānga o te pāmahana ki te matotoru o tōna wairewa. Ka heke te matotoru ina piki te pāmahana, ā, ka heke anō hoki. Kāore e rerekē te pumau o te matotoru o te wairewa i te pāmahana rūma, engari ka taea te heke haere o te matotoru ina werahia ki runga ake i te 80°C mō te wā roa. I te nuinga o te wā, ina kore te pāmahana e neke ake i te 110°C, ahakoa ka mau tonu te pāmahana mō te 3 hāora, kātahi ka whakamatao ki te 25°C, ka hoki tonu te matotoru ki tōna āhua taketake; engari ina werahia te pāmahana ki te 120°C mō te 2 hāora, ahakoa kua whakahokia te pāmahana, ka heke te matotoru mā te 18.9%.

(7) Ka pā anō hoki te uara pH ki te matotoru o tōna wairewa wai. I te nuinga o te wā, ina rerekē te pH o tētahi wairewa matotoru iti mai i te koretake, he iti noa te pānga o tōna matotoru, engari mō tētahi wairewa matotoru-waenga, ki te rerekē tōna pH mai i te koretake, ka tīmata te heke haere o te matotoru; ki te rerekē te pH o tētahi wairewa matotoru teitei mai i te koretake, ka heke tōna matotoru. He hekenga nui.

(8) Hototahi ki ētahi atu kāpia wairewa-wai, whakangawari me ngā kapia. Hei tauira, he hototahi ki te kāpia kararehe, te kāpia arapi, te kawheini me te māngaro wairewa. He hototahi hoki ki te karāhe wai, te waipiro polyvinyl, te kapia urea-formaldehyde, te kapia melamine-formaldehyde, me ētahi atu, engari he iti iho te nui.

(9) Kāore anō kia rerekē te tae, kia pakarukaru rānei te kiriata i hangaia mā te whakakā i te hihi ultraviolet mō ngā haora 100.

(10) E toru ngā whānuitanga matotoru hei whiriwhiri māu, e ai ki te whakamahinga. Mō te gypsum, whakamahia te matotoru waenga (2% wairewa i te 300-600mPa·s), ki te whiriwhiri koe i te matotoru teitei (1% wairewa i te 2000mPa·s, neke atu rānei), ka taea te whakamahi me te whakaiti i te horopeta.

(11) Ka mahi tōna wairewa hei aukati i roto i te gypsum.

(12) Kāore he pānga kitea o ngā huakita me ngā moroiti ki tōna āhua paura, engari he pānga ki tōna wairewa. I muri i te poke, ka heke te matotoru, ā, ka puta te harore. Mā te tāpiri i te nui o ngā mea tiaki i mua i te wā ka taea te pupuri i tōna matotoru me te ārai i te harore mō te wā roa. Ko ngā mea tiaki e wātea ana ko: BIT (1.2-benzisothiazolin-3-one), racebendazim, thiram, chlorothalonil, me ētahi atu. Ko te nui o te tāpiri tohutoro ki roto i te wairewa he 0.05% ki te 0.1%.

He pēhea te whai huatanga o te hydroxypropyl methylcellulose hei mea pupuri wai mō te here anhydrite?

Whakautu: Ko te Hydroxypropyl methylcellulose he matū pupuri wai tino whai hua mō ngā rauemi sima gypsum. I te pikinga ake o te ihirangi o te hydroxypropyl methylcellulose. Ka tere te pikinga o te pupuri wai o te rauemi sima gypsum. Ina kore he matū pupuri wai e tāpirihia, ko te tere pupuri wai o te rauemi sima gypsum e tata ana ki te 68%. Ina 0.15% te nui o te matū pupuri wai, ka taea e te tere pupuri wai o te rauemi sima gypsum te eke ki te 90.5%. Ā, ko ngā whakaritenga pupuri wai o te paraikete o raro. Neke atu i te 0.2% te horopeta o te matū pupuri wai, ka piki ake te horopeta, ā, ka āta piki haere te tere pupuri wai o te rauemi sima gypsum. Te whakarite i ngā rauemi paraikete anhydrite. Ko te horopeta tika o te hydroxypropyl methylcellulose ko te 0.1%-0.15%.

He aha ngā pānga rerekē o ngā momo cellulose ki te pāreti o Parī?

Whakautu: Ka taea te whakamahi i te carboxymethyl cellulose me te methyl cellulose hei pupuri wai mō te plaster o Paris, engari he iti iho te pānga pupuri wai o te carboxymethyl cellulose i tō te methyl cellulose, ā, kei roto i te carboxymethyl cellulose te tote konutai, nō reira he pai mō te Plaster o Paris. He pānga whakaroa, he whakaiti hoki i te kaha o te plaster.Mītirau pūtauHe ranunga tino pai mō ngā rauemi sima gypsum e whakauru ana i te pupuri wai, te whakamātotoru, te whakapakari, me te whakakōkī, engari ko ētahi momo he pānga whakaroa ina nui te horopeta. he nui ake i te carboxymethyl cellulose. Nā konei, ko te nuinga o ngā rauemi whakakī hiato gypsum e whakamahi ana i te tikanga whakakotahi i te carboxymethyl cellulose me te methyl cellulose, e kore e whakaatu noa i ō rātou āhuatanga (pēnei i te pānga whakaroa o te carboxymethyl cellulose, te pānga whakapakari o te methyl cellulose), engari e whakaatu ana i ō rātou painga noa (pēnei i te pupuri wai me te pānga whakamātotoru). Mā tēnei, ka taea te whakapai ake i te mahi pupuri wai o te rauemi sima gypsum me te mahi whānui o te rauemi sima gypsum, me te pupuri i te pikinga utu ki te wāhi iti rawa.