Etera cellulosehe pūhui hanga-haurua kore-ionic, he wairewa-wai, he wairewa-whakarewa hoki. He rerekē ngā pānga o tēnei ki ngā ahumahi rerekē. Hei tauira, i roto i ngā rauemi hanga matū, ko ēnei ngā pānga hiato:
①Kai pupuri wai ②Whakamātotoru ③Āhuatanga whakataurite ④Āhuatanga hanga kiriata ⑤Kaihere
I roto i te umanga polyvinyl chloride, he emulsifier me te dispersant; i roto i te umanga rongoā, he mea here me te rauemi anga tuku puhoi me te whakahaere, me ētahi atu. Nā te mea he maha ngā pānga hiato o te cellulose, ko tōna whakamahinga he whānui rawa atu hoki. Ko te kaupapa e whai ake nei e arotahi ana ki te whakamahinga me te mahi a te cellulose ether i roto i ngā momo rauemi hanga.
(1) I roto i te peita rapa:
I. Tāpiri tika ki te hanga: me whiriwhiri tēnei tikanga i te momo whakaroa hydroxyethyl cellulose, me te hydroxyethyl cellulose me te wā whakarewanga neke atu i te 30 meneti, ko ngā mahi whakamahi e whai ake nei:
① Tāpirihia he nui o te wai parakore ki roto i tētahi ipu he mīhini whakaranu kutikuti-teitei kei roto.
②Tīmata ki te whakaoho tonu i te tere puhoi, ā, i te wā kotahi, tāpirihia mārire te hydroxyethyl ki te otinga kia ōrite.
③Me whakaranu tonu kia mākū katoa ngā kirikiri
④Tāpirihia ētahi atu tāpiringa me ngā tāpiringa taketake, me ētahi atu.
⑤Whakaohokia kia memeha rawa ngā rōpū hydroxyethyl katoa, kātahi ka tāpirihia ētahi atu wāhanga ki te ranunga, ka huri kia oti ra ano te hanga.
Ⅱ. Kua rite ki te wai whaea mō te whakamahinga ā muri ake nei: Ka taea e tēnei tikanga te whiriwhiri i te cellulose inamata, he pānga ārai-haruru. Ko te painga o tēnei tikanga he nui ake tōna ngāwari, ā, ka taea te tāpiri tika ki te peita rapa. He rite tonu te tikanga whakarite ki ngā mahi ①-④.
Ⅲ. Whakaritea te parāoa mō te whakamahinga ā muri ake nei: Nā te mea he ngoikore ngā whakarewa rauropi (kāore e rewa) mō te hydroxyethyl, ka taea te whakamahi i ēnei whakarewa hei whakarite parāoa. Ko ngā whakarewa rauropi e whakamahia whānuitia ana ko ngā wai rauropi i roto i ngā hanganga peita rapa, pērā i te ethylene glycol, te propylene glycol, me ngā kaihanga kiriata (pērā i te diethylene glycol butyl acetate). Ka taea te tāpiri tika i te parāoa hydroxyethyl cellulose ki te peita. Me whakaoho tonu kia memeha rawa.
(2) I roto i te putty waru pakitara:
I tēnei wā, i te nuinga o ngā tāone o tōku whenua, ko te putty ātete-wai, ātete-horoi hoki, he mea nui ki te tangata. Ka puta mai i te tauhohenga acetal o te waipiro vinyl me te formaldehyde. Nō reira, ka āta tangohia tēnei rauemi e te tangata, ā, ka whakamahia ngā hua raupapa cellulose ether hei whakakapi i tēnei rauemi. Arā, mō te whakawhanake i ngā rauemi hanga whare ā-taiao, ko te cellulose anake te rauemi i tēnei wā.
Nā te matotoru nui o te cellulose, ka piki ake te pūmau o te putty, ā, ka karohia hoki te āhuatanga whakaheke i te wā hanga, ā, he pai ake, he penapena mahi hoki i muri i te waru. He watea ake te tāpiri i te cellulose ether ki te putty paura. He watea ake te hanga me te whakamahi. Ka taea te whakaranu i te whakakī me ngā tāpiringa ki te paura maroke.
(3) Te moata raima:
I roto i te moata raima, kia eke ki te kaha tino teitei, me tino makuku te sima. Ina koa i te hanganga raumati, ka tere rawa te ngaro o te wai o te moata raima, ā, ka whakamahia ngā mehua o te makuku katoa hei pupuri me te tauhiuhi i te wai. He moumou rauemi, he mahi uaua hoki. Ko te mea nui ko te wai kei runga noa i te mata, ā, kāore anō kia oti te makuku o roto. Nō reira, ko te otinga ki tēnei raruraru ko te tāpiri i ngā kaihoko pupuri wai e waru ki te moata raima. Ko te tikanga, ko te hydroxypropyl methyl, ko te methyl Cellulose rānei, ko te matotoru kei waenga i te 20000-60000cps, ā, ko te nui o te tāpiri he 2%-3%. Ka taea te whakanui ake i te tere pupuri wai ki te neke atu i te 85%. Ko te tikanga whakamahi i roto i te moata raima ko te whakaranu i te paura maroke kia ōrite, ka ringihia ki roto i te wai.
(4) I roto i te paninga gypsum, te gypsum piri, te gypsum whakapiri:
I te tere o te whanaketanga o te umanga hanga, kei te piki haere hoki te hiahia o te tangata mō ngā rauemi hanga hou i ia rā, i ia rā. Nā te pikinga ake o te mōhiotanga o te tangata ki te tiaki taiao me te whakapai tonu i te whai huatanga o te hanga, kua tere te whanaketanga o ngā hua gypsum sima. I tēnei wā, ko ngā hua gypsum tino noa ko te gypsum parai, te gypsum here, te gypsum whakairo, me te piripiri taera. He rauemi parai kounga teitei te gypsum parai mō ngā pakitara me ngā tuanui o roto. He pai, he maeneene hoki te mata o te pakitara i paraitia ki a ia. Ko te piripiri papa rama whare hou he rauemi piri i hangaia ki te gypsum hei rauemi turanga me ngā momo tāpiri. He pai mō te here i waenga i ngā rauemi pakitara hanga kore-waro. Kāore he paitini, kāore he kakara, he wawe te kaha me te tere o te whakatakoto, he kaha te here me ētahi atu āhuatanga, he rauemi tautoko mō ngā papa hanga me te hanganga poraka; ko te kaihoko whakapiri gypsum he whakakī āputa i waenga i ngā papa gypsum me te whakakī whakatika mō ngā pakitara me ngā kapiti.
He maha ngā mahi a ēnei hua gypsum. Haunga te mahi a te gypsum me ngā whakakī e pā ana, ko te take matua ko te mahi matua a ngā tāpiringa cellulose ether. Nā te mea kua wehea te gypsum ki te gypsum waikore me te gypsum hemihydrate, he rerekē ngā pānga o ngā gypsum rerekē ki te mahi a te hua, nō reira ko te matotoru, te pupuri wai me te whakaroa ka whakatau i te kounga o ngā rauemi hanga gypsum. Ko te raruraru noa o ēnei rauemi ko te poka me te ngatata, ā, kāore e taea te whakatutuki i te kaha tuatahi. Hei whakaoti i tēnei raruraru, me whiriwhiri te momo cellulose me te tikanga whakamahi matū o te whakaroa. I tēnei whakaaro, ko te methyl, hydroxypropyl methyl 30000 rānei te nuinga o te wā e whiriwhiria ana. –60000cps, ko te nui tāpiri kei waenga i te 1.5% me te 2%, ā, ko te arotahi o te cellulose ko te pupuri wai me te whakaroa i te hinu. Heoi, kāore e taea te whakawhirinaki ki te cellulose ether hei whakaroa, ā, me tāpiri he whakaroa waikawa citric ki te whakaranu me te whakamahi me te kore e pā ki te kaha tuatahi.
Ko te pupuri wai e pā ana ki te nui o te wai ka ngaro noa iho me te kore e mimiti wai mai i waho. Mēnā he maroke rawa te pakitara, ka tere rawa te mimiti wai me te mimiti noa i te mata o te turanga, ā, ka puta hoki he kōhao me te ngatata. Ka konatunatua tēnei tikanga whakamahi ki te paura maroke. Mēnā ka whakarite koe i tētahi otinga, tirohia te tikanga whakarite o te otinga.
(5) Mōta whakamahana
He momo rauemi ārai pakitara o roto hou te moata whakamātao i te rohe raki. He rauemi pakitara i hangaia mā te rauemi ārai, te moata me te here. I roto i tēnei rauemi, he mahi nui te cellulose ki te hono me te whakanui ake i te kaha. Ko te tikanga he whiriwhiri i te methyl cellulose he matotoru teitei (tata ki te 10000eps), ko te horopeta i waenga i te 2%-3%, ā, ko te tikanga whakamahi he whakaranu paura maroke.
(6)Kaiwhakahaere atanga
KōwhiriHPMC20000cps mō te kaihoko atanga, whiriwhiria te 60000cps, neke atu rānei, mō te piri taera, ka arotahi ki te kaihoko whakamātotoru i roto i te kaihoko atanga, ka taea te whakapai ake i te kaha kume me te kaha ārai-pere. Whakamahia hei kaihoko pupuri wai i roto i te here o ngā taera hei ārai i ngā taera kei maroke wawe rawa, kei taka atu rānei.
Wā tuku: Paenga-whāwhā-25-2024