1. Inorganic thickener
Ihe a na-ejikarị eme ihe bụ bentonite organic, nke ihe mejupụtara ya bụ montmorillonite. Ọdịdị pụrụ iche nke lamellar ya nwere ike inye mkpuchi ahụ ike pseudoplasticity, thixotropy, nkwụsi ike nkwusioru na mmanu mmanu. Ụkpụrụ nke ịgbatị ahụ bụ na ntụ ntụ na-amịkọrọ mmiri ma zaa iji mee ka mmiri na-agba agba, ya mere o nwere ụfọdụ njigide mmiri.
Ọdịmma ndị ahụ bụ: adịghị mma na-asọpụta na nhazi ọkwa, ọ dịghị mfe ịgbasa na ịgbakwunye.
2. Cellulose
Ihe a na-ejikarị eme ihe bụ hydroxyethyl cellulose (HEC), nke nwere arụmọrụ dị elu dị elu, nkwusioru dị mma, mgbasa ozi na njigide mmiri, tumadi maka ịgbanye oge mmiri.
Ihe ọghọm ndị ahụ bụ: na-emetụta nguzogide mmiri nke mkpuchi, ezughị ezu mgbochi ebu, na arụmọrụ larịị adịghị mma.
3. Acrylic
Acrylic thickeners na-adịkarị kewara abụọ ụdị: acrylic alkali-swellable thickeners (ASE) na associative alkali-swellable thickeners (HASE).
The ndim ụkpụrụ nke acrylic acid alkali-swellable thickener (ASE) bụ dissociate na carboxylate mgbe pH na-gbanwee na alkaline, nke mere na molekụla yinye na-agbatị si a helical na mkpanaka site isotropic electrostatic repulsion n'etiti carboxylate ion, na-emeziwanye The viscosity nke aqueous agba. Ụdị thickener na-enwekwa arụmọrụ dị elu, pseudoplasticity siri ike na nkwusioru dị mma.
The associative alkali-swellable thickener (HASE) ewebata hydrophobic otu na ndabere nke nkịtị alkali-swellable thickeners (ASE). N'otu aka ahụ, mgbe a na-emezi pH na alkaline, otu mmekọ nwoke na nwanyị electrostatic repulsion n'etiti carboxylate ion na-eme ka molekụla yinye gbatịrị si a helical udi na a mkpara udi, nke na-eme ka viscosity nke mmiri na-adọ; na hydrophobic dị iche iche ewebata na isi yinye nwere ike ijikọta na latex irighiri na-amụba viscosity nke emulsion frasi.
Ọdịmma bụ: na-enwe mmetụta maka pH, ezughị ezu eruba na ọkwa nke ihe nkiri agba, ọ dị mfe ịgbatị mgbe.
4. Polyurethane
Polyurethane associative thickener (HEUR) bụ hydrophobically gbanwetụrụ ethoxylated polyurethane mmiri soluble polymer, nke bụ nke na-abụghị ionic associative thickener. Ọ mejupụtara akụkụ atọ: isi hydrophobic, hydrophilic chain na polyurethane base. Isi polyurethane na-agbasawanye na ngwọta agba, na eriri hydrophilic kwụsiri ike na mmiri mmiri. The hydrophobic base na-ejikọta ya na ihe owuwu hydrophobic dị ka akụkụ latex, surfactants, na pigmenti. , Akpụ a atọ akụkụ netwọk Ọdịdị, nke mere na iji nweta nzube nke ndim.
A na-egosipụta ya site n'ịdị arọ nke usoro emulsion, ihe dị mma na-arụ ọrụ na-arụ ọrụ nke ọma, arụmọrụ dị mma nke ọma na nchekwa viscosity kwụsiri ike, na enweghị oke pH; na ọ nwere uru doro anya na nkwụsị mmiri, gloss, nghọta, wdg.
Ihe ọghọm ndị dị na ya bụ: na usoro nke ọkara na obere viscosity, mmetụta nkwụsịtụ na ntụ ntụ adịghị mma, na ndị na-ekpo ọkụ na-ekpo ọkụ na-emetụta ngwa ngwa.
Oge nzipu: Dec-29-2022