Mkpuchi mkpuchi mmiri na-aghọwanye ihe dị mkpa n'ahịa mkpuchi ọgbara ọhụrụ n'ihi njirimara ha na gburugburu ebe obibi yana ikuku na-adịghị ala ala (VOC). Otú ọ dị, e jiri ya tụnyere ihe mkpuchi nke ihe mgbaze ọdịnala, ihe mkpuchi mmiri na-echekarị ihe ịma aka n'ihe gbasara imepụta ihe nkiri na nrapado. Iji dozie okwu ndị a, a na-agbakwunye ụfọdụ mgbakwunye na-arụ ọrụ na nhazi ahụ. Hydroxyethyl cellulose (HEC) bụ otu n'ime ihe ndị a na-ejikarị eme ihe na ihe mgbakwunye na-arụ ọrụ, nke na-arụ ọrụ dị mkpa n'ịkwalite mmepụta ihe nkiri na ntinye nke mkpuchi mmiri.
1. Ihe ndị bụ isi nke hydroxyethyl cellulose (HEC)
HEC bụ polymer na-abụghị ionic mmiri soluble nwetara site na mgbanwe kemịkalụ nke cellulose eke. Usoro ihe omimi ya nwere ọnụ ọgụgụ dị ukwuu nke hydroxyethyl, nke na-eme ka ọ nwee ezigbo mmiri solubility na ihe na-emepụta ihe nkiri. Isi njirimara nke HEC gụnyere:
Mmetụta siri ike: HEC nwere ike ịbawanye viscosity nke mkpuchi mmiri, na-enye ha mma rheology na nkwụsi ike n'oge mkpuchi.
Ihe na-emepụta ihe nkiri: HEC nwere ike ịmepụta ihe nkiri otu n'oge usoro ihicha nke mkpuchi ahụ, na-emeziwanye ihe anụ ahụ nke mkpuchi ahụ.
Ndakọrịta: HEC nwere ezigbo ndakọrịta na ụdị mmiri dị iche iche nke resins na pigmenti, ọ dịghịkwa enwe ike ịmepụta enweghị ike ma ọ bụ stratification.
2. Mechanism nke HEC n'ịkwalite ihe ndị na-emepụta ihe nkiri na mkpuchi mmiri
HEC nwere ike ịkwalite ihe ndị na-emepụta ihe nkiri na mkpuchi mmiri, tumadi n'ihi usoro ihe omimi ya pụrụ iche na nke anụ ahụ na kemịkal.
Njikọ njikọ anụ ahụ nke ụdọ molekụla: HEC molecular chains dị ogologo ma na-agbanwe agbanwe. N'oge usoro ihicha nke mkpuchi ahụ, ụdọ ndị a nwere ike jikọta na ibe ha iji mepụta netwọk njikọ anụ ahụ, na-abawanye ike ọrụ na mgbanwe nke mkpuchi ahụ.
Njikwa mmiri mmiri: HEC nwere ezigbo njide mmiri ma nwee ike jiri nwayọọ nwayọọ hapụ mmiri n'oge usoro ihicha nke mkpuchi ahụ, na-agbatị oge ịmepụta ihe nkiri ahụ, na-ekwe ka mkpuchi ahụ na-emepụta nke ọma, na-ebelata nkwụsịtụ na nkwụsị nke na-akpata ngwa ngwa ihicha ngwa ngwa.
Usoro iwu esemokwu dị n'elu: HEC nwere ike belata nhụsianya elu nke mkpuchi mmiri, na-akwalite wetting na mgbasa nke mkpuchi n'elu ihe nkedo ahụ, na-emeziwanye otu na ịdị larịị nke mkpuchi.
3. Usoro nke HEC na-eme ka adhesion na mkpuchi mmiri
HEC nwekwara ike imeziwanye adhesion nke mkpuchi mmiri, nke a na-egosipụta na akụkụ ndị a:
Nkwalite ihu: Nkesa otu nke HEC na mkpuchi nwere ike ime ka mpaghara kọntaktị dị n'etiti mkpuchi na elu ihe na-eme ka ọ dịkwuo mma njikọ njikọ. Yinye molekụla ya nwere ike jikọta ya na obere akụkụ concave na convex nke elu mkpụrụ iji meziwanye nrapado anụ ahụ.
Ndakọrịta kemịkalụ: HEC bụ polymer na-abụghị ionic nke nwere ezigbo kemịkalụ kemịkalụ dị iche iche (dịka igwe, osisi, plastik, wdg), na ọ dịghị mfe ime ka mmeghachi omume kemịkal ma ọ bụ nsogbu ndakọrịta ihu, si otú a na-emeziwanye adhesion.
Mmetụta plasticizing: HEC nwere ike ịrụ ọrụ ụfọdụ plasticizing na usoro ihicha nke mkpuchi ahụ, na-eme ka mkpuchi ahụ dịkwuo mma, nke mere na ọ nwere ike ime ka ọ dịkwuo mma na obere nrụrụ na mgbasawanye ọkụ na nkwụsị nke elu mkpụrụ, ma belata peeling na cracking. nke mkpuchi.
4. Ngwa ihe atụ na mmetụta nke HEC
N'ime ngwa ndị bara uru, a na-eji HEC eme ihe n'ụdị dị iche iche nke mmiri na-ekpuchi mmiri, dị ka ihe mkpuchi ụlọ na-adabere na mmiri, ihe mkpuchi osisi, mmiri na-emepụta ihe na-emepụta ihe, wdg Site n'ịgbakwụnye ego kwesịrị ekwesị nke HEC, ihe owuwu ahụ. arụmọrụ nke mkpuchi na àgwà nke ihe nkiri mkpuchi ikpeazụ nwere ike ime ka ọ dịkwuo mma.
Ihe mkpuchi ụlọ na-adabere na mmiri: N'ime agba mgbidi nke mmiri na mgbidi dị n'èzí, na-agbakwunye HEC nwere ike imeziwanye ihe mkpuchi mkpuchi na ịhịa aka n'ahụ nke ọma, na-eme ka mkpuchi ahụ dịkwuo mfe itinye na ihe nkiri mkpuchi ahụ na-edozi ma dị mma. N'otu oge ahụ, njigide mmiri nke HEC nwekwara ike igbochi mgbawa na fim mkpuchi nke ihicha ngwa ngwa.
Agba osisi na-adabere na mmiri: Na agba osisi nke mmiri, HEC na-emepụta ihe na-emepụta ihe na-emepụta ihe na-enyere aka mee ka nghọta na ịdị larịị nke ihe nkiri ahụ dịkwuo mma, na-eme ka elu osisi mara mma na ihe okike. Tụkwasị na nke ahụ, HEC nwere ike ime ka mmiri na-eguzogide mmiri na nguzogide kemịkalụ nke ihe nkiri mkpuchi ma melite mmetụta nchebe nke osisi.
Ihe mkpuchi ụlọ ọrụ na-emepụta mmiri: N'ime ihe mkpuchi mmiri na-ekpuchi mmiri na ihe mkpuchi mgbochi, ihe mgbakwunye HEC na-eme ka ihe nkiri ahụ na-eme ka ọ dịkwuo mma n'elu ígwè, na-eme ka ọrụ mgbochi na ndụ ọrụ dịkwuo mma.
Dị ka ihe mgbakwunye na-arụ ọrụ dị mkpa, hydroxyethyl cellulose (HEC) na-eme ka arụmọrụ zuru oke nke mkpuchi na mkpuchi mmiri na-eme ka ọ dịkwuo mma site n'ịkwalite ihe ndị na-emepụta ihe nkiri na adhesion. Ngwunye ya, njide mmiri, imepụta ihe nkiri na nkwalite interface na-eme ka mkpuchi mmiri na-eme ka ọ rụọ ọrụ nke ọma n'ụdị ngwa dị iche iche, si otú a na-egbo mkpa ahịa maka ịrụ ọrụ dị elu, mkpuchi gburugburu ebe obibi. N'ọdịnihu, na-aga n'ihu na-aga n'ihu nke nchebe gburugburu ebe obibi na ihe ndị chọrọ ịrụ ọrụ, atụmanya ngwa nke HEC na mkpuchi mmiri ga-aba ụba.
Oge nzipu: Jul-12-2024