Cellulose ethers bụ klas dị mkpa nke ihe mgbakwunye multifunctional, nke a na-ejikarị eme ihe n'ọhịa nke ihe owuwu ụlọ iji melite arụmọrụ ngwaahịa. Karịsịa na tile adhesives, cellulose ethers nwere ike imeziwanye ihe anụ ahụ na kemịkalụ ha, melite arụmọrụ ụlọ, na ịkwalite ike na ịdịte aka.
1. Ihe ndị bụ isi nke cellulose ethers
Cellulose ethers bụ mmepụta nke enwetara site chemical mgbanwe nke eke cellulose, na nkịtị ndị na-agụnye methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl cellulose (HEC), wdg Ya isi e ji mara bụ na ọ bụ soluble na mmiri, akpụ a elu-viscosity ngwọta, na nwere magburu onwe filmening-ụdị mmiri njigide. Àgwà ndị a na-eme ka ether cellulose na-arụ ọrụ dị mkpa na nrapado tile.
2. Mmanya njide mmiri
2.1 Mkpa nke njide mmiri
Njide mmiri nke nrapado tile dị oké mkpa maka ịrụ ọrụ ihe owuwu na ike njikọ. Ezigbo njide mmiri nwere ike hụ na nrapado nwere mmiri kwesịrị ekwesị n'oge usoro ọgwụgwọ, si otú ahụ na-eme ka ciment hydration zuru oke. Ọ bụrụ na njide mmiri ahụ ezughị oke, mmiri na-abanye ngwa ngwa site na mkpụrụ ma ọ bụ gburugburu ebe obibi, na-ebute hydration na-ezughị ezu, nke na-emetụta ike ikpeazụ na njikọ njikọ nke nrapado.
2.2 Usoro njide mmiri nke cellulose ether
Cellulose ether nwere ikike njigide mmiri dị oke elu ma nwee ike jikọta ọnụ ọgụgụ dị ukwuu nke mmiri mmiri na agbụ molekụla ya. Ihe ngwọta ya dị elu nke viscosity aqueous nwere ike ịmepụta nkesa mmiri edo edo na nrapado ma kpochie mmiri site na capillary edinam na netwọk nrapado iji gbochie mmiri ahụ ka ọ ghara ịla ngwa ngwa. Usoro njide mmiri a abụghị naanị na-eme ka mmeghachi omume hydration nke ciment, kamakwa ọ nwere ike ịgbatị oge oghere nke nrapado ma melite mgbanwe ihe owuwu.
3. Meziwanye ihe owuwu ihe owuwu
3.1 Mgbatị oge oghe
Ntinye nke cellulose ether na-agbatị oge oghere nke ihe ntanye tile, ya bụ, oge nke nrapado na-anọgide na-adịgide adịgide mgbe etinyere ya n'elu ala. Nke a na-enye ndị na-arụ ọrụ ihe owuwu oge ka ha gbanwee na ịtọba taịlị, si otú a na-ebelata ntụpọ ihe owuwu nke nrụgide oge na-akpata.
3.2 Emelitere arụmọrụ mgbochi sagging
N'oge usoro ihe owuwu ahụ, nrapado ahụ nwere ike ịda mbà n'ihi ike ndọda mgbe a kwụsịrị taịlị ndị ahụ, karịsịa mgbe a na-etinye ya n'elu elu. Mmetụta siri ike nke cellulose ether nwere ike imeziwanye ihe mgbochi na-adịghị mma nke nrapado, na-ahụ na ọ naghị amịpụta mgbe ọ na-arapara na taịlị. Ngwongwo a dị mkpa karịsịa maka ịhụ na izi ezi na ịdị mma zuru oke nke ịtọgbọ tile.
3.3 Melite mmanu na ịrụ ọrụ
Mmanya nke cellulose ether na-eme ka arụ ọrụ nke adhesives tile dị mfe, na-eme ka ọ dị mfe itinye na ịgbawa. Ngwongwo a na-enyere aka belata ihe isi ike na oge nke owuwu ma melite arụmọrụ ụlọ.
4. kwalite ike nkekọ
4.1 Melite nrapado mbụ
Ngwọta viscosity dị elu nke ether cellulose na-emepụta na ngwọta mmiri nwere ike ime ka adhesion mbụ nke tile adhesives dịkwuo elu, na-enye ntinye ozugbo mgbe ị na-edobe taịl nile ma na-ezere nkwụsị nke tile ma ọ bụ nkwụsị.
4.2 Kwalite hydration ciment
Ezigbo njide mmiri nke cellulose ether na-eme ka mmeghachi omume hydration zuru oke nke ciment, si otú ahụ na-emepụta ihe ndị ọzọ hydration (dị ka calcium silicate hydrated), nke na-eme ka ike jikọta nke nrapado. Usoro a ọ bụghị naanị na-eme ka ike ọrụ nke nrapado dịkwuo mma, kamakwa ọ na-eme ka ọ dị ogologo oge na nkwụsị mgbawa.
5. Ọganihu dị mma na nkwụsị mgbape
5.1 Emelitere nguzogide ntu oyi
Cellulose ethers na-eme ka nkwụsi ike nke ifriizi-thaw nke tile adhesives na-eme ka ọ dịkwuo mma site n'ịkwalite njide mmiri na nchikota nke nrapado taịlị, na-ebelata mbugharị ngwa ngwa na mfu mmiri. Ọganihu a na-enye ohere nke nrapado ka ọ nọgide na-arụ ọrụ kwụsiri ike ọbụlagodi na gburugburu ebe oyi siri ike yana o yikarịghị ka ọ ga-agbawa ma ọ bụ gbajie.
5.2 Emelitere mgbape mgbape
N'oge usoro ọgwụgwọ nke nrapado, usoro netwọk siri ike nke cellulose ethers hibere na-enyere aka belata nkwụsị nke ciment ma belata ihe ize ndụ nke mgbawa nke nrụgide nkwụsị. Tụkwasị na nke ahụ, mmetụta dị nro nke cellulose ethers na-eme ka nrapado mee ka ọ dịkwuo mma mejupụta oghere dị n'etiti taịl na mkpụrụ, na-eme ka nkwụsi ike nke njikọ njikọ.
6. Ọrụ ndị ọzọ
6.1 Nye mmanu mmanu na mgbochi sagging
Mmanya nke cellulose ethers ọ bụghị nanị na-enyere aka ịrụ ọrụ arụ ọrụ, ma na-ebelata ihe na-eme ka ọ dị nro nke nrapado n'oge usoro ntinye, na-eme ka otu na nkwụsi ike n'oge usoro ngwa.
6.2 Mma ụlọ dị mma
Site n'ịbawanye viscosity na oge owuwu nke nrapado, cellulose ether na-eme ka ịdị mma nke ihe owuwu ahụ dịkwuo mma, na-ekwe ka ndị ọrụ na-arụ ọrụ na-edozi ọnọdụ nke taịl nile n'ụzọ dị mfe, na-ebelata mmebi ihe owuwu na rework rate.
7. Ngwa Ihe atụ nke Cellulose Ether
N'ime ngwa a kapịrị ọnụ, cellulose ether na-eme ka ogo nke ọrụ zuru ezu na-eme ka ọ dịkwuo mma site n'ịkwalite arụmọrụ nke nrapado tile. Dịka ọmụmaatụ, na ụfọdụ ebe okpomọkụ dị elu ma ọ bụ obere iru mmiri, ihe nrapado nkịtị nwere ike iche nsogbu nke mmiri na-efu ngwa ngwa, na-ebute ihe isi ike na-ewu ụlọ na enweghị ike zuru ezu. Mgbe agbakwunyere cellulose ether, nrapado nwere ike ịnọgide na-ejigide mmiri dị mma, zere nsogbu ndị a, wee hụ na ọrụ ahụ dị mma.
Cellulose ether na-eme ka arụ ọrụ nke adhesives tile dịkwuo mma site na njigide mmiri ya dị mma, na-agbakọba na mmanu mmanu. Ọ bụghị naanị na ọ na-eme ka arụmọrụ arụ ọrụ dịkwuo mma, ike ijikọ na ịdịte aka nke nrapado, kamakwa ọ na-eme ka ịdị mma na ntụkwasị obi dịkwuo mma. Nkwalite ndị a ọ bụghị nanị na-eme ka ọrụ ahụ dịkwuo mma, ma na-enyekwa nnukwu mgbanwe na nkwụsi ike maka usoro ihe owuwu ahụ. Ya mere, dị ka ihe mgbakwunye isi, ntinye nke cellulose ether na tile adhesives nwere uru bara uru dị mkpa na atụmanya sara mbara.
Oge nzipu: Jun-24-2024