Hydroxyethyl Cellulose (HEC) bụ ihe na-emekarị na-abụghị ionic mmiri-soluble polymer compound na magburu onwe thickening, mmiri njide, na ihe nkiri-akpụ Njirimara. Ya mere, a na-eji ya eme ihe na mkpuchi, agba latex, na glues. Adhesives na ụlọ ọrụ ndị ọzọ. Agba Latex bụ akụkụ dị mkpa nke ihe ịchọ mma ụlọ nke oge a, na mgbakwunye nke HEC enweghị ike imeziwanye nkwụsi ike nke agba latex, kamakwa melite arụmọrụ ya.
1. Njiri mara nke hydroxyethyl cellulose
Hydroxyethyl cellulose bụ polymer soluble mmiri nwetara site na mgbanwe kemịkalụ site na iji cellulose eke dị ka akụrụngwa. Isi njirimara ya gụnyere:
Thickening: HEC nwere ezigbo ndim mmetụta, nke nwere ike budata dịkwuo viscosity nke latex agba na-enye latex agba magburu onwe thixotropy na rheology, si otú akpụ a edo na ok mkpuchi n'oge ewu.
Njide mmiri: HEC nwere ike igbochi mmiri ịpụ ngwa ngwa na agba, si otú a na-agbatị oge mmeghe nke agba latex ma melite ihicha na ihe nkiri na-emepụta ihe nkiri nke ihe nkiri agba.
Nkwụsi ike: HEC nwere ezigbo nkwụsi ike nke kemịkalụ na nhazi agba latex, nwere ike iguzogide mmetụta nke mgbanwe pH, ọ nweghịkwa mmeghachi omume ọjọọ na ihe ndị ọzọ dị na agba (dị ka pigmenti na fillers).
Nkwalite: Site n'ịgbanwe ọnụọgụ HEC, enwere ike imeziwanye mmiri na ọkwa nke agba latex, na nsogbu ndị dị ka sagging na brush akara na ihe nkiri agba nwere ike izere.
Ntachi obi nnu: HEC nwere ụfọdụ nnabata na electrolytes, yabụ ọ ka nwere ike ịnọgide na-arụ ọrụ dị mma na usoro nwere nnu ma ọ bụ electrolytes ndị ọzọ.
2. Usoro ọrụ nke hydroxyethyl cellulose na agba latex
Dị ka thickener na stabilizer, isi usoro nke edinam hydroxyethyl cellulose na latex agba nwere ike nyochaa site n'akụkụ ndị a:
(1) Mmetụta dị arọ
HEC na-agbaze ngwa ngwa na mmiri wee mepụta ngwọta doro anya, viscous. Site na ịmepụta njikọ hydrogen na ụmụ irighiri mmiri, mkpụrụ ndụ HEC na-agbasa ma na-abawanye viscosity nke ngwọta. Site n'ịgbanwe ọnụọgụ HEC, viscosity nke agba latex nwere ike ịchịkwa nke ọma iji rụpụta ezigbo ihe owuwu. Mmetụta dị arọ nke HEC na-emetụtakwa ịdị arọ ya. N'ozuzu, ka ịdị arọ molekụla ahụ dị elu, ka mmetụta na-ebuwanye ibu na-abawanye.
(2) Mmetụta nkwụsi ike
Enwere ọnụ ọgụgụ buru ibu nke emulsions, pigments na fillers na agba latex, yana mmekọrịta dị n'etiti ihe ndị a nwere ike ime, na-ebute delamination ma ọ bụ mmiri ozuzo nke agba latex. Dị ka colloid na-echebe, HEC nwere ike ịmepụta usoro sol kwụsiri ike n'ime oge mmiri iji gbochie pigmenti na ndị na-ejuputa na-edozi. Tụkwasị na nke ahụ, HEC nwere ezigbo nguzogide mgbanwe na okpomọkụ na ike ịkpụ, ya mere ọ nwere ike hụ na nkwụsi ike nke agba latex n'oge nchekwa na ewu.
(3) melite constructability
Ịrụ ọrụ ngwa nke agba latex na-adabere n'ụzọ dị ukwuu na njirimara rheological ya. Site n'ịgbasi ike na imeziwanye rheology, HEC nwere ike imeziwanye arụmọrụ mgbochi sag nke agba latex, na-ekwe ka ọ gbasaa n'ụzọ ziri ezi na-eme ka ọ ghara ịdị na-asọba. N'otu oge ahụ, HEC nwekwara ike ịgbatị oge mmeghe nke agba latex, na-enye ndị na-arụ ọrụ ihe owuwu oge iji mee mgbanwe ma belata akara nchara na akara ngosi.
3. Otu esi agbakwunye hydroxyethyl cellulose na agba latex
Iji rụpụta mmetụta nke hydroxyethyl cellulose n'ụzọ zuru oke, usoro mgbakwunye ziri ezi dị oke mkpa. N'ikwu okwu n'ozuzu, iji HEC na agba latex gụnyere usoro ndị a:
(1) Tupu mgbasa
Ebe ọ bụ na HEC na-agbaze nwayọọ nwayọọ na mmiri na ọ na-adịkarị mfe ịkụkọta, a na-atụkarị aro ka tupu igbari HEC na mmiri iji mepụta ngwọta colloidal edo edo tupu ejiri ya. Mgbe ị na-agbaze, HEC kwesịrị ịgbakwunye nwayọọ nwayọọ ma na-akpalite na-aga n'ihu iji gbochie agglomeration. Njikwa okpomọkụ mmiri n'oge usoro mgbasa dịkwa oke mkpa. A na-atụ aro ka ịme mgbasa na okpomọkụ nke 20-30 ° C iji zere oke mmiri ọkụ na-emetụta usoro ihe omimi nke HEC.
(2) Tinye usoro
N'ime usoro mmepụta nke agba latex, a na-agbakwunye HEC n'oge a na-akụ mkpụrụ. Mgbe ị na-akwadebe agba latex, a na-agbasasị pigmenti na ihe ndị na-emepụta ihe na mbụ na mmiri mmiri iji mepụta slurry, mgbe ahụ, a na-agbakwunye ngwọta HEC colloidal n'oge mgbasa ozi iji hụ na enwere ike kesaa ya n'ụzọ zuru ezu na usoro ahụ. Oge nke ịgbakwunye HEC na ike nke ịkpali ga-emetụta mmetụta ya na-eme ka ọ dị arọ, n'ihi ya, ọ dị mkpa ka a gbanwee ya dịka usoro chọrọ kpọmkwem na mmepụta ya.
(3) njikwa onunu ogwu
Ọnụ ego nke HEC nwere mmetụta kpọmkwem na arụmọrụ nke agba latex. Ọtụtụ mgbe, ego mgbakwunye nke HEC bụ 0.1% -0.5% nke ngụkọta nke agba latex. Obere HEC ga-eme ka mmetụta na-egbuke egbuke bụrụ ihe na-abaghị uru na agba latex na-adị oke mmiri, ebe oke HEC ga-eme ka viscosity dị elu, na-emetụta ọrụ ahụ. Ya mere, na ngwa ndị bara uru, ọ dị mkpa ka edozi usoro ọgwụgwọ HEC n'ụzọ ziri ezi dịka usoro a kapịrị ọnụ na ihe owuwu nke agba latex si dị.
4. Ngwa ihe atụ nke hydroxyethyl cellulose na latex agba
Na mmepụta n'ezie, a na-eji HEC mee ihe n'ụdị dị iche iche nke agba latex, dị ka:
Ime mgbidi latex agba: The ndim na mmiri-ejigide Njirimara nke HEC na-enyere ya budata mma larịị na mgbochi sag Njirimara nke agba ihe nkiri na ime mgbidi latex agba, karịsịa na elu okpomọkụ gburugburu ebe ọ ka nwere ike ịnọgide na-enwe ọmarịcha workability.
Agba latex mgbidi dị n'èzí: Nkwụsi ike na nguzogide nnu nke HEC na-enyere ya aka imeziwanye ihu igwe na nguzogide ịka nká na agba latex mgbidi dị n'èzí ma gbasaa ndụ ọrụ nke ihe nkiri agba.
Mgbochi mildew latex agba: HEC nwere ike gbasasịa ihe mgbochi mildew nke ọma na agba mgbochi mildew ma melite ịdị n'otu ya na ihe nkiri agba, si otú a na-eme ka mmetụta mgbochi mildew dịkwuo mma.
Dị ka ihe mgbakwunye agba latex mara mma, hydroxyethyl cellulose nwere ike imeziwanye arụmọrụ nke agba latex site na njupụta ya, njigide mmiri, na mmetụta na-eme ka ahụ sie ike. N'ime ngwa bara uru, iji ezi uche ghọta usoro mgbakwunye na usoro ọgwụgwọ HEC nwere ike imeziwanye nrụpụta na ojiji nke agba latex.
Oge nzipu: Ọktoba 22-2024