Momwe mungasankhire chowonjezera choyenera

Thickener mitundu ndi makhalidwe

Ma cellulosic thickeners ali ndi kukhuthala kwakukulu, makamaka pakukhuthala kwa gawo lamadzi; ali ndi zoletsa zochepa pazopangira zokutira ndipo amagwiritsidwa ntchito kwambiri; atha kugwiritsidwa ntchito mumitundu yosiyanasiyana ya pH. Komabe, pali zovuta monga kusanja bwino, kuwonda kwambiri panthawi yoyala, kusakhazikika bwino, komanso kutengeka ndi kuwonongeka kwa tizilombo. Chifukwa ali ndi mamasukidwe otsika kwambiri akameta ubweya ndi mkulu mamasukidwe akayendedwe pansi static ndi otsika kukameta ubweya, mamasukidwe akayendedwe amawonjezeka mofulumira ❖ kuyanika, amene angalepheretse kugwa, koma Komano, kumayambitsa kusayenda bwino. Kafukufuku wasonyeza kuti kulemera kwa maselo a thickener kumawonjezeka, kutsekemera kwa utoto wa latex kumawonjezeka. Ma cellullosic thickeners amakonda kugwa chifukwa cha kuchuluka kwawo kwa ma cell. Ndipo chifukwa cellulose imakhala ndi hydrophilic, imachepetsa kukana kwamadzi kwa filimu ya utoto.

cellulosic thickener

Ma polyacrylic acid thickeners ali ndi mphamvu zokhuthala komanso zowongolera, komanso kukhazikika kwachilengedwe, koma amakhudzidwa ndi pH komanso samakana madzi.

polyacrylic thickener

Mapangidwe a associative a associative polyurethane thickener amawonongeka pochita kukameta ubweya wa ubweya, ndipo kukhuthala kumachepa. Pamene kukameta ubweya wa mphamvu kutha, kukhuthala kungathe kubwezeretsedwa, zomwe zingalepheretse zochitika za sag pomanga. Ndipo kuchira kwake kwa viscosity kumakhala ndi hysteresis, yomwe imathandizira kuti filimu yophimba ikhale yosasunthika. Mamolekyulu amtundu (masauzande mpaka masauzande) a polyurethane thickeners ndi otsika kwambiri kuposa ma molekyulu (mazana a masauzande mpaka mamiliyoni) amitundu iwiri yoyambirira ya zokhuthala, ndipo sangalimbikitse kuwombana. Mamolekyu a polyurethane thickener ali ndi magulu onse a hydrophilic ndi hydrophobic, ndipo magulu a hydrophobic amakhala ndi mgwirizano wamphamvu ndi matrix a filimu yophimba, yomwe imatha kupititsa patsogolo kukana kwamadzi kwa filimu yophimba.