Taa, anyị ga-elekwasị anya n'otu esi etinye ụdị ihe ndị na-eme ka ihe sie ike.
Ụdị ihe ndị na-eme ka ihe sie ike a na-ejikarị eme ihe bụ ihe ndị na-adịghị ahụkebe, cellulose, acrylic, na polyurethane.
Ihe na-adịghị n'ime ihe ndị dị ndụ
Ihe ndị na-adịghị n'ime ahụ bụ bentonite, silicon a na-esi n'ọkụ, wdg., nke a na-etinyekarị na slurry maka ịcha ihe, n'ihi na ọ na-esiri ike ịgbasa ha kpamkpam n'ihi ike ngwakọta agba nkịtị.
E nwekwara obere akụkụ nke a ga-agbasasị tupu oge eruo ma kwadebe ya ka ọ bụrụ jel maka ojiji.
A pụrụ itinye ha na agba site n'ịgweri ha iji mee ụfọdụ jel pre-gel. E nwekwara ụfọdụ ndị dị mfe ịgbasa ma enwere ike ime ka ha bụrụ jel site na iji ngwa ngwa na-akpali ha. N'oge nkwadebe, iji mmiri ọkụ eme ihe nwere ike ịkwalite usoro a.
Cellulose
Ngwaahịa cellulosic kachasị eji bụhydroxyethyl cellulose (HEC)Ọ naghị eruba nke ọma ma ọ bụ na-agbanwe agbanwe, mmiri anaghị eguzogide ya nke ọma, ọ naghịkwa egbochi ebu na ihe ndị ọzọ, a naghị eji ya eme ihe n'ime agba ụlọ ọrụ mmepụta ihe.
Mgbe e tinyere ya n'ọrụ, a pụrụ itinye ya ozugbo ma ọ bụ gbazee ya na mmiri tupu oge eruo.
Tupu ịtinye ya, a ga-eleba anya n'ịgbanwe pH nke sistemụ ahụ na ọnọdụ alkaline, nke na-eme ka mmepe ya dị ngwa ngwa.
Acrylic
A na-eji ihe ndị na-eme ka agba acrylic sie ike eme ihe n'agba ụlọ ọrụ mmepụta ihe. A na-ejikarị ya eme ihe n'ihe mkpuchi nkịtị dịka otu ihe mejupụtara ya na oke agba dị elu, dịka ihe owuwu ígwè na ihe mkpuchi praịma.
N'ime ihe mkpuchi elu (karịsịa ihe mkpuchi elu doro anya), ihe nwere akụkụ abụọ, ihe mkpuchi varnish, agba na-egbuke egbuke na sistemụ ndị ọzọ, ọ nwere ụfọdụ ntụpọ ma ọ nweghị ike ịrụ ọrụ nke ọma.
Ụkpụrụ nke ihe mkpuchi acrylic bụ: a na-agbanwe otu carboxyl dị na polymer yinye ka ọ bụrụ carboxylate ionized n'okpuru ọnọdụ alkaline, a na-enwetakwa mmetụta nke ihe mkpuchi site na repulsion electrostatic.
Ya mere, a ga-agbanwe pH nke sistemụ ahụ ka ọ bụrụ alkaline tupu e jiri ya, a ga-ejikwa pH ahụ mee ihe karịa 7 n'oge nchekwa ọzọ.
Enwere ike itinye ya ozugbo ma ọ bụ gwakọta ya na mmiri.
Enwere ike ịgbaze ya tupu oge eruo maka ojiji na ụfọdụ sistemụ chọrọ nkwụsi ike dị elu. Nke mbụ: gwakọta ihe mkpuchi acrylic ahụ na mmiri, wee tinye ihe nhazi pH ka ị na-agwakọta ya. N'oge a, ihe ngwọta ahụ na-agbaze nke ọma, site na ọcha dị ka mmiri ara ehi ruo na ihe na-acha ọcha, a pụkwara ịhapụ ya ka ọ dịrị maka ojiji ma emechaa.
Iji usoro a eme ihe na-eme ka ọ sie ike, mana ọ nwere ike ịgbasa ihe na-esi ísì ụtọ ahụ nke ọma n'oge mbụ, nke na-eme ka ọ sie ike mgbe agba ahụ gasịrị.
N'ime usoro nhazi na mmepụta nke agba ntụ ọlaọcha nke otu akụkụ nke H1260 nke e ji mmiri mee, a na-eji ihe na-eme ka ọ sie ike n'ụzọ dị otu a.
Polyurethane
A na-eji ihe mkpuchi polyurethane eme ihe nke ukwuu n'ime mkpuchi ụlọ ọrụ mmepụta ihe nwere arụmọrụ dị mma ma dabara adaba maka ojiji na sistemụ dị iche iche.
Mgbe a na-etinye ya n'ọrụ, ọ dịghị mkpa na pH nke sistemụ ahụ, enwere ike itinye ya ozugbo ma ọ bụ mgbe a gwakọtara ya, ma ọ bụ na mmiri ma ọ bụ ihe mgbaze. Ụfọdụ ihe mgbaze nwere obere hydrophilicity, a pụghịkwa ịgwakọta ya na mmiri, mana enwere ike ịgwakọta ya naanị na ihe mgbaze.
sistemụ emulsion
Sistemụ emulsion (gụnyere acrylic emulsions na hydroxypropyl emulsions) enweghị ihe mgbaze ma ọ dị mfe ịka. Ọ kacha mma ịgbakwunye ha mgbe a gwakọtara ya. Mgbe ị na-agwakọta ya, dịka arụmọrụ nke ihe na-eme ka ihe dị arọ si dị, gwakọta ya nke ọma.
Ọ bụrụ na arụmọrụ nke ịkpụ ya dị ala, oke nke ịkpụ ya kwesịrị ịdị ala ma ọ bụ ghara ịgbaze; ọ bụrụ na arụmọrụ nke ịkpụ ya dị elu, oke nke ịkpụ ya kwesịrị ịdị elu.
Dịka ọmụmaatụ, SV-1540 nke e ji mmiri mee polyurethane associative thickener nwere nnukwu arụmọrụ nke imepụta ihe dị arọ. Mgbe ejiri ya na sistemụ emulsion, a na-agbazekarị ya ugboro iri ma ọ bụ ugboro iri abụọ (10% ma ọ bụ 5%) maka ojiji.
Mgbasa Hydroxypropyl
Resin Hydroxypropyl dispersion n'onwe ya nwere obere ihe mgbaze, ọ naghịkwa adị mfe ịka mma n'oge a na-eme agba. Ya mere, a na-agbakwụnyekarị polyurethane na obere nha dilution ma ọ bụ tinye ya na-enweghị dilution na ụdị sistemụ a.
Ọ dị mkpa ịmara na n'ihi mmetụta nke nnukwu ihe mgbaze, mmetụta nke ọtụtụ ihe mgbaze polyurethane na-eme n'ụdị sistemụ a abụghị ihe doro anya, a chọkwara ịhọrọ ihe mgbaze kwesịrị ekwesị n'ụzọ ezubere iche. N'ebe a, achọrọ m ịkwado ihe mgbaze polyurethane associative nke dabeere na mmiri SV-1140, nke nwere arụmọrụ dị elu ma nwee arụmọrụ dị mma na sistemụ mgbaze dị elu.
Oge ozi: Eprel-25-2024