Taa, anyị ga-elekwasị anya na-esi tinye kpọmkwem ụdị thickeners.
Ụdị ihe ndị a na-ejikarị eme ihe bụ ndị inorganic, cellulose, acrylic, na polyurethane.
Inorganic
Inorganic ihe bụ tumadi bentonite, fumed silicon, wdg, nke na-n'ozuzu kwukwara na slurry maka egweri, n'ihi na ọ na-esi ike kpamkpam chụsasịrị ha n'ihi ot agba Ịgwakọta ike.
Enwekwara obere akụkụ nke a ga-ebu ụzọ chụsa ya ma kwadebe ya n'ime gel maka ojiji.
Enwere ike ịgbakwunye ha na agba site na-egweri iji mee ụfọdụ ihe nke pre-gel. E nwekwara ụfọdụ ndị dị mfe ịgbasa ma nwee ike mee ka ha bụrụ gel site na ịkpali ọsọ ọsọ. N'oge usoro nkwadebe, iji mmiri ọkụ na-eme ihe nwere ike ịkwalite usoro a.
Cellulose
Ngwaahịa cellulosic a na-ejikarị eme ihe bụhydroxyethyl cellulose (HEC). Na-adịghị mma na-asọba na ọkwa, ezughị oke mmiri na-eguzogide, mgbochi ebu na ihe ndị ọzọ, a na-ejikarị ya eme ihe na agba ụlọ ọrụ.
Mgbe etinyere ya, enwere ike ịgbakwunye ya ozugbo ma ọ bụ gbazee na mmiri tupu oge eruo.
Tupu ịtinye, ekwesịrị ịṅa ntị n'ịgbanwe pH nke usoro ahụ na ọnọdụ alkaline, nke na-eme ka mmepe ya ngwa ngwa.
Acrylic
Acrylic thickeners nwere ụfọdụ ngwa na ulo oru agba. A na-ejikarị ya eme ihe n'ụdị mkpuchi a na-ahụkarị dị ka otu akụrụngwa na oke pigmenti na isi, dị ka ihe nchara na ihe nchebe.
Na topcoat (karịsịa topcoat doro anya), akụkụ abụọ, varnish na-eme achịcha, agba na-egbuke egbuke na usoro ndị ọzọ, ọ nwere ụfọdụ ntụpọ na enweghị ike zuru oke.
The ndim ụkpụrụ nke acrylic thickener bụ: ndị carboxyl otu na polymer yinye na-converted n'ime ihe ionized carboxylate n'okpuru alkaline ọnọdụ, na ndim mmetụta a na-enweta site electrostatic repulsion.
Ya mere, a ga-edozi pH nke usoro ahụ na alkaline tupu ejiri ya, na pH kwesịkwara ịnọgide na-enwe> 7 n'oge nchekwa na-esote.
Enwere ike ịgbakwunye ya ozugbo ma ọ bụ tinye ya na mmiri.
Enwere ike gbazee ya maka ojiji na sistemụ ụfọdụ chọrọ nkwụsi ike dị elu nke viscosity. Ya bụ: buru ụzọ gbanye acrylic thickener na mmiri, wee gbakwunye pH adapter mgbe ị na-akpali. N'oge a, ihe ngwọta ahụ na-agbapụta n'ụzọ doro anya, site na milky na-acha ọcha na-acha ọcha na-egbuke egbuke, ma enwere ike ịhapụ ya ka ọ guzoro maka iji ya eme ihe.
Iji usoro a na-achụ àjà na-arụ ọrụ nke ọma, ma ọ nwere ike gbasaa n'ụzọ zuru ezu na mbido mbụ, nke na-eme ka nkwụsi ike nke viscosity mgbe agbachara.
N'ime nhazi na mmepụta nke H1260 nke mmiri na-adabere na otu akụkụ nke ọlaọcha ntụ ntụ ntụ, a na-eji thickener mee ihe n'ụzọ dị otú a.
Polyurethane
A na-eji polyurethane thickeners eme ihe n'ọtụtụ ebe na mkpuchi ụlọ ọrụ na-arụ ọrụ dị mma ma dị mma maka iji ya na usoro dị iche iche.
Na ngwa, ọ dịghị ihe a chọrọ na pH nke usoro, ọ nwere ike tinye ya ozugbo ma ọ bụ mgbe dilution, ma na mmiri ma ọ bụ ihe mgbaze. Ụfọdụ ndị na-agba mmiri nwere hydrophilicity na-adịghị mma, a pụghịkwa iji mmiri mee ya, mana enwere ike ịgbanye ya na ihe mgbaze.
usoro emulsion
Sistemu emulsion (gụnyere emulsions acrylic na hydroxypropyl emulsions) enweghị ihe mgbaze ma dịkwa mfe ịgbatị. Ọ kacha mma ịgbakwunye ha mgbe dilution. Mgbe diluting, dị ka ndim arụmọrụ nke thickener, itughari a ụfọdụ ruru.
Ọ bụrụ na ịdị arọ arụmọrụ dị ala, ọnụọgụ dilution kwesịrị ịdị ala ma ọ bụ ghara ịgbanye ya; ma ọ bụrụ na ndị ndim arụmọrụ dị elu, dilution ruru kwesịrị ịdị elu.
Dị ka ihe atụ, SV-1540 mmiri dabeere polyurethane associative thickener nwere elu ndim arụmọrụ. Mgbe eji na emulsion usoro, ọ na-adịkarị diluted ugboro 10 ma ọ bụ 20 ugboro (10% ma ọ bụ 5%) maka ojiji.
Hydroxypropyl mgbasa
Hydroxypropyl dispersion resin n'onwe ya nwere ụfọdụ ihe mgbaze, ọ dịghịkwa mfe ịgbanye n'oge a na-eme agba. Ya mere, a na-agbakwunye polyurethane n'ozuzu ya na ntinye dilution dị ala ma ọ bụ tinye ya na-enweghị dilution na ụdị usoro a.
Ọ dị mma ịmara na n'ihi mmetụta nke nnukwu ihe mgbaze, mmetụta siri ike nke ọtụtụ polyurethane thickeners n'ụdị usoro a abụghị ihe doro anya, ọ dịkwa mkpa ka a họrọ onye na-agba agba kwesịrị ekwesị n'ụzọ ezubere iche. N'ebe a, ọ ga-amasị m ịkwado SV-1140 mmiri nke dabeere na polyurethane associative thickener, nke nwere oke arụmọrụ dị elu ma nwee arụmọrụ dị mma na usoro mgbaze dị elu.
Oge nzipu: Eprel-25-2024