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I roto i te putty, te moata sima me te paru gypsum-based, ko te HPMC hydroxypropyl methylcellulose ether te nuinga o te mahi hei pupuri i te wai me te whakamātotoru, ā, ka taea te whakapai ake i te ātete piri me te totoro o te paru. Ko ngā āhuatanga pēnei i te pāmahana hau, te pāmahana me te tere o te pēhanga hau ka...Pānuihia atu»
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Ko te Hydroxypropyl methyl cellulose (HPMC) he momo cellulose kore-ionic ether i hangaia mai i te miro polymer tūturu mā te raupapa o ngā maimoatanga matū. I roto i te umanga hanga, he aha te whakamahinga matua o te hydroxypropyl methylcellulose? 1, moata sima: hei whakapai ake i te taumata o te marara o te onepu sima, g...Pānuihia atu»
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I runga i ngā whakakapinga, ka taea te wehewehe i ngā etera cellulose ki ngā etera takitahi me ngā etera whakauru; i runga i te wairewatanga, ka taea te wehewehe i ngā etera cellulose ki ngā etera wairewa-wai me ngā etera kore-wairewa. Ko te tikanga matua o te whakarōpūtanga o te etera cellulose ko te whakarōpū i runga i te katote...Pānuihia atu»
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1. Te hanganga me te kaupapa whakarite o te cellulose ether E whakaatu ana te Pikitia 1 i te hanganga noa o ngā cellulose ether. Ka whakakapia e ia wae bD-anhydroglucose (te wae tāruarua o te cellulose) tētahi rōpū i ngā tūranga C (2), C (3) me C (6), arā, ka taea te whai rōpū ether tae atu ki te toru. Nā te ...Pānuihia atu»
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Ko ngā take matua mō te kōwhai o te mata o te putty ātete-wai Whai muri i te rangahau rauemi, he maha ngā whakamātautau me te mahi hangarau, e whakapono ana te kaituhi ko ngā take matua mō te kōwhai o te mata o te putty ātete-wai koia ēnei: Take 1. Konupūmā...Pānuihia atu»
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1. Hydroxypropyl methyl cellulose Ko te Hydroxypropyl methylcellulose he momo cellulose e tere piki haere ana te putanga me te whakamahinga. He cellulose kore-ionic i konatunatua ki te ether i hangaia mai i te miro kua whakatikatikaina i muri i te alkaliization, ma te whakamahi i te propylene oxide me te methyl chloride hei kaihoko etherification, mā roto...Pānuihia atu»
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Ko te āhuatanga tino nui o te otinga cellulose ether ko tōna āhuatanga rheological. Nā ngā āhuatanga rheological motuhake o te maha o ngā cellulose ethers ka whakamahia whānuitia i roto i ngā momo mara, ā, he pai te ako i ngā āhuatanga rheological ki te whakawhanake i ngā mara tono hou, ki te whakapai ake rānei...Pānuihia atu»
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He aha ngā āhuatanga o te carboxymethyl cellulose? Whakautu: He rerekē anō hoki ngā āhuatanga o te carboxymethyl cellulose nā 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 e tohu ana...Pānuihia atu»
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Carboxymethyl cellulose: He mea hanga te cellulose ether ionic mai i ngā muka taiao (miro, me ētahi atu) i muri i te maimoatanga alkali, te whakamahi i te konutai monochloroacetate hei kaihoko etherification, me te whai i te raupapa o ngā maimoatanga tauhohenga. Ko te nui o te whakakapinga he 0.4 ~ 1.4, ā, he tino pai tana mahi...Pānuihia atu»
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Ko te Ethyl cellulose (Ethyl cellulose ether), e mōhiotia ana ko te cellulose ether, e kiia nei ko te EC. Te hanganga ngota me te tauira hanganga: [C6H7O2(OC2H5)3] n. 1. Te Whakamahinga He mahi a tēnei hua ki te hono, ki te whakakī, ki te hanga kiriata, me ētahi atu. Ka whakamahia mō ngā kirihou hanga kapia, ngā paninga, ngā mea rapa...Pānuihia atu»
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(1) Ngā arai hangarau He nui ake ngā whakaritenga a ngā kaihoko o raro o te cellulose ether mō te kounga me te pumau o te cellulose ether. He arai hangarau nui te hangarau whakahaere kounga i roto i te umanga cellulose ether. Me matatau ngā kaihanga ki te hoahoa ōrite o te mahi...Pānuihia atu»
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Whakaahuahia: Ngā hanganga kai kei roto ngā etera cellulose. Marae hangarau: E pā ana tēnei mahi auaha ki ngā hanganga kai kei roto ngā etera cellulose. Tikanga papamuri: Kua roa e mōhiotia ana te whakauru i ngā etera cellulose ki roto i ngā hanganga kai, inā koa ngā hanganga kai tukatuka, ...Pānuihia atu»