Cellulose ethers bụ ụdị nke mmiri-soluble polymer compound kpụrụ mgbe kemịkalụ mgbanwe nke cellulose. A na-eji ha eme ihe n'ọtụtụ ebe na ihe owuwu ụlọ, karịsịa mgbe ejiri ya na ngwa agha nwere mmetụta dị ịrịba ama.
Ihe ndị bụ isi nke cellulose ethers
Cellulose ethers bụ ụdị polymer enwetara site na ọgwụgwọ kemịkalụ nke cellulose eke. Common cellulose ethers na-agụnye hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), carboxymethylcellulose (CMC) wdg Ha nwere ezi solubility na ndim ikike, na ike na-etolite edo na mụ colloidal ngwọta na mmiri. Ihe ndị a na-eme ka ether cellulose na-ejikarị eme ihe n'ụlọ.
Ihe ndị bụ isi nke cellulose ethers gụnyere:
Thicking: nwere ike budata dịkwuo viscosity nke mmiri mmiri usoro.
Njide mmiri: O nwere ikike ijide mmiri siri ike ma nwee ike ime ka mmiri ghara ịla n'iyi n'oge usoro ihe owuwu.
Ihe na-emepụta ihe nkiri: Ọ nwere ike ịmepụta otu ihe nkiri n'elu ihe iji chebe ma kwalite ya.
Lubricity: Na-eme ka arụ ọrụ nke ngwa agha dịkwuo mma, na-eme ka ọ dị mfe itinye na ịkpụzi.
Ọrụ bụ isi nke cellulose ether na ngwa agha
Ọrụ cellulose ether na ngwa agha na-egosipụtakarị n'akụkụ ndị a:
1. Meziwanye njigide mmiri
Mortar na-enwekarị ike ịnwụ na nsogbu mgbawa n'ihi mmiri na-efunahụ mgbe a na-ewu ụlọ. Cellulose ether nwere ezigbo njide mmiri ma nwee ike ịmepụta usoro netwọk na ngwa ngwa iji kpọchie mmiri ma belata ikuku mmiri na mfu, si otú ahụ na-eme ka njigide mmiri nke ngwa agha ahụ dịkwuo mma. Nke a ọ bụghị naanị na-agbatị oge oghere nke ngwa agha ahụ, kamakwa na-eme ka mmiri ahụ na-ekpo ọkụ na-ekpo ọkụ n'oge usoro siri ike, na-eme ka ike ya na ịdịte aka ya dịkwuo elu.
2. Melite arụmọrụ ihe owuwu
Mmetụta mmanu mmanu nke cellulose ether na-eme ka ngwa agha ahụ dị nro n'oge a na-arụ ọrụ, dị mfe itinye na ịgbasa, ma na-eme ka arụmọrụ ụlọ dịkwuo mma. N'otu oge ahụ, ihe na-eme ka ihe dị arọ nke cellulose ether na-eme ka ngwa agha ahụ nwee ezigbo thixotropy, ya bụ, ọ na-adị gịrịgịrị ma ọ bụrụ na a na-agbanye ya n'ike ma laghachi na viscosity mbụ ya mgbe ike na-apụ n'anya. Àgwà ọma a na-eme ka ngwa agha ahụ ghara ịda mbà n'oge a na-ewu ụlọ ma nọgide na-enwe ọdịdị dị mma.
3. Mụbaa adhesion nke ngwa agha
Cellulose ether nwere ike ịmepụta usoro netwọk otu n'ime ngwa agha ahụ, na-abawanye ike nrapado nke ngwa agha ahụ, ma melite nrapado ya na mkpụrụ. Nke a nwere ike igbochi ngwa agha ahụ ka ọ ghara ịdị na-ekewapụ ya na ihe ndị dị n'okpuru n'oge usoro siri ike ma belata ihe omume nke nsogbu dị mma dị ka oghere na ịdaba.
4. Meziwanye nkwụsị mgbape
Ihe na-emepụta ihe nkiri nke cellulose ether na-enye ohere ngwa ngwa ịmepụta ihe nkiri dị mkpa n'elu n'oge usoro siri ike, nke na-arụ ọrụ nchebe ma na-ebelata mmetụta nke gburugburu ebe obibi na ngwa ngwa. N'otu oge ahụ, njide mmiri na ihe ndị na-eme ka ọ dịkwuo mma nwekwara ike ibelata nkwụsịtụ nke mmiri na-efunahụ na ngwa agha ma melite nkwụsị mgbawa ya.
Mmetụta dị iche iche nke cellulose ethers na ngwa ngwa
Enwere ike nyochaa mmetụta cellulose ether kpọmkwem na arụmọrụ nke ngwa agha nke ọma site na akụkụ ndị a:
1. Ịrụ ọrụ
Mortar agbakwunyere na cellulose ether na-arụ ọrụ nke ọma n'ihe gbasara ịrụ ọrụ. Njide mmiri ya dị mma na mmanu na-eme ka ngwa agha ahụ dị nro n'oge a na-arụ ya, dị mfe iji rụọ ọrụ, na ọ naghị esikwa ike ịrụ ya. N'otu oge ahụ, mmetụta siri ike nke cellulose ether nwere ike imeziwanye thixotropy nke ngwa agha ahụ, nke mere na ngwa agha ahụ nwere ike ịnọgide na-enwe ọdịdị ya nke ọma n'oge a na-ewu ụlọ ma ọ dịghị mfe ịkwaga na sag.
2. Ike
Njide mmiri nke cellulose ether na-enyere ngwa agha ahụ aka ịnọgide na-enwe mmiri zuru oke n'oge usoro siri ike, na-akwalite mmeghachi omume hydration nke ciment, ma na-emepụta nhazi ngwaahịa hydration siri ike, si otú a na-eme ka ike nke ngwa agha dịkwuo elu. Tụkwasị na nke ahụ, nkesa otu na mmetụta njikọ nke cellulose ether nwekwara ike ime ka usoro dị n'ime nke ngwa agha guzosie ike, belata ihe omume micro-cracks, ma melite ike zuru ezu.
3. Ogologo oge
N'ihi na ether cellulose nwere ike ịnọgide na-enwe mmiri dị na ngwa ngwa nke ọma, ngwa agha ahụ nwere ike ịmepụta otu nhazi n'oge usoro ike siri ike, na-ebelata ihe omume nke nkwụsịtụ, si otú ahụ na-emeziwanye ịdịte aka nke ngwa agha ahụ. Ihe nkiri a na-emepụta site na cellulose ether nwekwara ike ichebe elu ngwa agha ruo n'ókè ụfọdụ, belata mmebi nke ngwa agha site na gburugburu ebe obibi, ma na-emekwuwanye ike ya.
4. Njide mmiri na nkwụsị mgbawa
Cellulose ether nwere ike ime ka njigide mmiri nke ngwa agha dịkwuo mma, na-ekwe ka ngwa agha ahụ nọgide na-enwe mmiri zuru oke n'oge usoro siri ike ma belata ihe omume nke nkwụsịtụ. Tụkwasị na nke ahụ, ihe na-emepụta ihe nkiri nke cellulose ether na-enye ohere ka ngwa agha ahụ mepụta ihe nkiri nchebe n'elu, na-ebelata mmetụta nke gburugburu ebe obibi na ngwa agha ma na-emeziwanye nkwụsị mgbawa ya.
Ngwa nke cellulose ether na ngwa agha nwere mmetụta dị ukwuu. Njide mmiri ya dị mma, ịgbatị, imepụta ihe nkiri na mmanu mmanye emeela ka arụmọrụ ụlọ, ike, ịdịte aka na akụkụ ndị ọzọ nke ngwa agha dịkwuo mma. Ya mere, cellulose ether, dị ka ihe mgbakwunye dị mkpa, ejirila ọtụtụ ihe na-ewu ụlọ nke oge a ma ghọọ ụzọ dị mkpa iji meziwanye arụmọrụ nke ngwa agha.
Oge nzipu: Jul-12-2024