1. Whakakapi parakore
Ko te mea tino whakamahia ko te bentonite pararopi, ko te montmorillonite te waahanga matua. Ko tana hanganga motuhake ka taea te whakakii i te paninga ki te pseudoplasticity kaha, te thixotropy, te pumau o te aukati me te whakahinuhinu. Ko te maataapono o te whakamaroketanga ko te paura ka mimiti i te wai, ka pupuhi ki te whakapakeke i te wahanga wai, na reira he pupuri wai.
Ko nga ngoikoretanga ko: he ngoikore te rere me te whakataurite i nga mahi, ehara i te ngawari ki te marara me te taapiri.
2. Cellulose
Ko te mea tino whakamahia ko te hydroxyethyl cellulose (HEC), he pai te kaha o te matotoru, he pai te whakatārewatanga, te whakamararatanga me nga taonga pupuri wai, ko te nuinga mo te whakapakeke i te waahanga wai.
Ko nga ngoikoretanga ko: te pa ki te aukati wai o te paninga, te iti o te mahi anti-maaka, me te ngoikore o te mahi whakataurite.
3. Kiriaku
Ko te tikanga ka wehewehea nga kaitao kiriaku ki nga momo e rua: ko te kiriaku alkali-swellable thickeners (ASE) me te hononga alkali-swellable thickeners (HASE).
Ko te maataapono whakapakeke o te waikawa kiriaku alkali-swellable thickener (ASE) ko te wehe i te carboxylate ka whakatikahia te pH ki te kawakore, kia roa ai te mekameka ngota mai i te helical ki te rakau na roto i te repulsion electrostatic isotropic i waenga i nga katote carboxylate, me te whakapai ake i te Te pokey o te wahanga wai. Ko tenei momo kaitao he nui te kaha o te matotoru, te pseudoplasticity kaha me te whakatārewatanga pai.
Ko te kaitakawaenga-a-te-a-te-a-waa-a-iwi (HASE) he whakauru i nga roopu hydrophobic i runga i te kaupapa o nga kaitao-a-waa-a-waa (ASE). Waihoki, ka whakatikahia te pH ki te kawakore, ko te whakaheke hiko i waenga i nga katote carboxylate e hanga ana Ko te mekameka ngota ka toro atu i te ahua helical ki te ahua o te rakau, e whakanui ana i te viscosity o te wahanga wai; a ka taea e nga roopu hydrophobic i whakauruhia ki te mekameka matua te hono ki nga matūriki taherapa hei whakanui ake i te pokey o te wahanga whakaehunga.
Ko nga ngoikoretanga ko: he tairongo ki te pH, he iti te rere me te whakataurite o te kiriata peita, he ngawari ki te matotoru i muri mai.
4. Polyurethane
Ko te polyurethane associative thickener (HEUR) he hydrophobically modified polyurethane polyurethane polymer wai-wairewa, no te katote-kore-a-honohono thickener. E toru nga wahanga: te turanga hydrophobic, te mekameka hydrophilic me te turanga polyurethane. Ka whakawhānuihia te turanga polyurethane i roto i te otinga peita, a ka pumau te mekameka hydrophilic i roto i te waahanga wai. Ka hono te turanga hydrophobic ki nga hanganga hydrophobic penei i te matūriki taherapa, surfactants, me te poaka. , hanga i te hanganga whatunga ahu toru, kia rite ki te whakatutuki i te kaupapa o te matotoru.
Kei te tohuhia e te matotoru o te wahanga whakaehunga, te rere pai me te mahi whakataurite, te pai o te matotoru me te pai ake o te rokiroki pokey, kaore he rohe pH; a he painga kitea i roto i te aukati wai, te kanapa, te marama, me era atu.
Ko nga ngoikoretanga ko: i roto i te punaha me te iti o te punaha pokey, kaore i te pai te paanga anti-settling i runga i te paura, a ka ngawari te paanga o te whakamaarama e nga dispersants me nga whakarewa.
Wā tuku: Tihema-29-2022