Cellulose ethers bụ ụdị ngwakọta polymer mepụtara site na-agbanwe cellulose eke kemịkalụ. Ha nwere ihe pụrụ iche nke anụ ahụ na kemịkalụ, a na-ejikwa ya na nrapado dị iche iche. N'ihi njirimara dị mma nke cellulose ether, iji ya mee ihe ọ bụghị nanị na-eme ka arụmọrụ nke ngwaahịa ahụ dịkwuo mma, kamakwa ọ na-eweta usoro nhazi dị ka nkwụsi ike, nkwụsi ike, njide mmiri, na mmanu mmanu.
1. Mmetụta dị arọ
Otu n'ime ọrụ ndị bụ isi nke ethers cellulose bụ ịgba, nke na-eme ka ha baa uru nke ukwuu na usoro nrapado nke mmiri. Viscosity nke nrapado dị oké mkpa maka ịrụ ọrụ nke ngwa ya, na cellulose ethers nwere ike ịbawanye viscosity nke nrapado nke ukwuu site n'ịmepụta nhazi netwọk molekụla otu. Cellulose ethers dị ka hydroxypropyl methylcellulose (HPMC) na hydroxyethyl cellulose (HEC) nwere ezi ndim mmetụta, na ha ndim Njirimara nwere ike gbanwee na mgbanwe nke molekụla arọ, ogo nke nnọchi na ihe ndị ọzọ. Ngwunye na-ekpo ọkụ ọ bụghị nanị na-eme ka mkpuchi dị mfe, kamakwa ọ na-eme ka ike dị n'ime ya dịkwuo mma, na-eme ka a na-eji ya eme ihe n'ọtụtụ ihe na-ewu ụlọ, ihe ntanye ngwaahịa akwụkwọ, wdg.
2. Nye njigide mmiri
Ịdebe mmiri bụ ọrụ ọzọ dị mkpa nke cellulose ethers na adhesives. Ethers cellulose dabara adaba maka nrapado mmiri, nke nwere ike ijigide mmiri nke ọma ma gbochie colloid ịsa ngwa ngwa. Nke a dị oke mkpa maka gburugburu ebe mmiri na-ekupụ ngwa ngwa. Dịka ọmụmaatụ, na ciment dabeere na ciment ma ọ bụ gypsum adhesives na ụlọ ọrụ mmepụta ihe, cellulose ethers nwere ike ịmịnye mmiri, gbasaa ma mepụta ihe nkiri hydration, na-agbatị oge ọrụ nke nrapado na-eme ka nchekwa dị n'oge ọrụ ụlọ. Ngwongwo nkekọ anaghị eweda ya ala site na ihicha akaghi aka. Njirimara a dịkwa na mpaghara ndị dị ka eserese mgbidi na nrapado tile nke kwesịrị ịchịkwa evaporation mmiri.
3. Mee ka njikọ na adhesion dịkwuo elu
Mgbakwunye nke cellulose ether nwere ike ọ bụghị naanị ịgbatị ma na-ejigide mmiri, ma na-emeziwanye ike nrapado nke nrapado nke ọma. Otu dị iche iche na-arụ ọrụ dị ka hydroxyl na ether bond na usoro ihe omimi ya nwere ike ịmepụta njikọ hydrogen na mmekọrịta anụ ahụ na kemịkal ndị ọzọ na elu nke adherend, si otú ahụ na-eme ka nrapado ahụ dịkwuo elu. Nke a na-eme ka ether cellulose dị mma na akwụkwọ, osisi, seramiki na ihe ndị ọzọ. Ntughari nke cellulose ethers na-enye nrapado ka mma mmachi na ihe owuwu ụlọ, na-enye ya ohere ịmepụta ihe njikọ dị mma n'ọtụtụ ihe dị iche iche.
4. Meziwanye nkwụsi ike na nkwụsị nkwụsị
N'ime ihe ndị na-ewu ụlọ ma ọ bụ ihe mgbakwunye ndị ọzọ dị elu, cellulose ethers nwekwara ike imeziwanye nkwụsị nkwụsị nke usoro ahụ. Cellulose ether nwere ike ịmepụta usoro netwọk na ihe nkedo, na-egbochi mmiri mmiri nke ihe nkedo ahụ, nke mere na mkpuchi mkpuchi na-edobe ụdị kwụsiri ike ma ghara ịdaba n'ihi ike ndọda ma ọ bụ ihe ndị dị n'èzí, karịsịa Ọ dị mkpa karịsịa na gburugburu ebe a na-ewu ihe dịka ịtọgbọ tile. . Tụkwasị na nke ahụ, cellulose ether nwekwara ike inye ihe nkwụnye ahụ nke ọma na-edozi ihe mgbochi, zere delamination n'oge nchekwa na ojiji, ma hụ na ịdị n'otu na ịdị irè nke ogologo oge nke nrapado.
5. Meziwanye ihe owuwu ụlọ
Cellulose ether nwere mma mmanu mmanu na dispersibility, nke ukwuu mma ya workability na adhesives. Adhesives na-eji cellulose ether ọ bụghị nanị na ọ dị mfe itinye, ma ọ nwekwara ike ịmepụta akwa akwa akwa akwa na-edozi ahụ na-enweghị ịba ụba, na-ebelata eriri n'oge a na-ewu ma na-eme ka ahụmịhe onye ọrụ dịkwuo mma. N'otu oge ahụ, iji cellulose ether eme ihe nwekwara ike ibelata nkwụsị nke nrapado nke ọma, belata nsogbu mgbawa ma ọ bụ peeling mgbe mkpuchi gasịrị, ma melite nkwụsi ike na ịdịte aka nke oyi akwa.
6. Kwalite nguzogide n'okirikiri ikuku na-agbaze
N'ebe ụfọdụ ngwa ngwa pụrụ iche, adhesives kwesịrị ịgafe ọtụtụ okirikiri ntu oyi, dị ka ihe owuwu n'èzí, njem na mpaghara ndị ọzọ. Cellulose ether nwere ezigbo nguzogide na-ekpo ọkụ, nke nwere ike ịnọgide na-enwe nkwụsi ike nke nrapado n'okpuru ọnọdụ okpomọkụ dị ala ma gbochie nrapado ahụ ka ọ ghara imebi n'oge oge oyi na-ekpo ọkụ. Site n'usoro ihe owuwu ya kwụsiri ike, cellulose ether nwere ike idowe ihe nkedo nke nrapado n'agbanyeghị mgbanwe okpomọkụ, na-eme ka ọ bụrụ ntụkwasị obi n'okpuru ọnọdụ ihu igwe dị oke egwu. Nke a dị mkpa karịsịa maka usoro nrapado nke chọrọ ikpughe n'èzí ogologo oge.
7. Nye nchedo gburugburu ebe obibi
Dị ka ihe sitere na cellulose eke, cellulose ethers nwere ezigbo biodegradability na gburugburu ebe obibi. N'adịghị ka polymers sịntetik, cellulose ethers na-enweta site na ihe ndị a na-emegharị ọhụrụ na ọ gaghị ebute oke mmetọ na gburugburu ebe obibi mgbe ejiri ya. Tụkwasị na nke ahụ, cellulose ethers nwere ntakịrị ihe ọkụkụ na-adịghị agbanwe agbanwe (VOC) n'oge mmepụta na ojiji, na-agbaso ihe ndị a chọrọ n'iwu gburugburu ebe obibi ọgbara ọhụrụ. Ya mere, n'ime nhazi nhazi nke nrapado enyi na gburugburu ebe obibi, cellulose ethers ejirila nwayọọ nwayọọ ghọọ ihe dị mma na nrapado. Ngwakọta akụrụngwa.
8. Nnukwu ngwa ngwa
N'ihi ntụgharị ha, cellulose ethers na-arụ ọrụ dị mkpa na ngwa nrapado gafee ọtụtụ ụlọ ọrụ. Nke mbụ, n'ọhịa nke ihe owuwu, a na-eji cellulose ethers eme ihe n'ọtụtụ ebe na ciment dabeere na gypsum adhesives iji nye ọmarịcha ihe owuwu na ike njikọ. Tụkwasị na nke ahụ, a na-ejikwa cellulose ethers na nkwakọ ngwaahịa na gluu ngwaahịa akwụkwọ. Njide mmiri ha na ihe ndị na-emepụta ihe na-eme ka mmetụta njikọ na ịdịte aka nke akwụkwọ dịkwuo mma. A na-ejikwa cellulose ethers na gluu ahụike, gluu nri na ubi ndị ọzọ. N'ihi ihe ha na-adịghị egbu egbu, enweghị isi na ihe kwụsiri ike, ha na-emezu ihe ndị a chọrọ maka nrapado na mpaghara ndị a.
Dị ka ihe na-arụ ọrụ polymer multifunctional, cellulose ether nwere atụmanya sara mbara maka itinye na adhesives. Ọ na-eme ka arụmọrụ nke nrapado dịkwuo mma ma na-egbo mkpa maka akwa akwa dị elu na ụlọ ọrụ ọgbara ọhụrụ na ebe a na-ewu ihe owuwu site n'ọtụtụ ọrụ dị ka ịgbatị, njide mmiri, ime ka adhesion dịkwuo mma, na-eme ka nkwụsi ike na-arụ ọrụ. Site na ọganihu sayensị na nkà na ụzụ na-aga n'ihu na ihe ndị mmadụ na-achọwanye maka nchebe gburugburu ebe obibi, ọrụ cellulose ethers na adhesives ga-adịwanye mkpa, na atụmanya ngwa n'ọdịnihu ga-aba ụba.
Oge nzipu: Sep-24-2024