Ko te tirohanga o te otinga polyacrylamide e whakaatu ana i te parekura o roto i hangaia e te rere, te nekehanga whanaunga ranei i waenga i nga ngota wai. Ko te tohetohe o roto e pa ana ki te hanganga o te polymer, nga ahuatanga o te whakarewa, te kukume o te otinga, me te pāmahana me te pēhanga. Ko te nui ake o tana uara, ko te nui ake o te whakamaaro o te otinga.
1. Ko te hua o te pāmahana i runga i te tirohanga o te polyacrylamide
Ko te pāmahana te whakaaro huritao o te kaha o te nekehanga waiariki. Ko te nekehanga o ngota ngota me raru te taunekeneke i waenga i nga ngota, me te taunekeneke i waenga i nga ngota, penei i te hauota o roto, te huringa mekameka o roto, etc. Na reira, ko te tirohanga o nga rongoā polymer ka rereke me te pāmahana. Ko te hua o te rereketanga o te pāmahana i runga i te tirohanga o nga rongoā polymer he mea nui. Ko te tirohanga o te otinga polyacrylamide e heke ana i te pikinga o te pāmahana. Ko te take ko te waahanga matūriki kua marara o te otinga polymer e haangai ana ki a raatau ano ki te hanga i tetahi papa whatunga whatunga. Ko te teitei ake o te pāmahana, ka ngawari ake te whakangaro i te hanganga whatunga, na reira ka heke tona ahuareka.
2. Tuhinga o mua
Ko te tirohanga o te otinga polyacrylamide me te whakawhānui i te waa hydrolysis. Ko te wa poto o te waa hydrolysis, te whakaheke i te tirohanga, i te mea kaore i te wa o te polymer ki te hanga i tetahi hanganga whatunga; Mena he roa rawa te wa a te hydrolysis, ka heke te ahuareka, na te mea e tika ana ki te wewete i te hanganga o te polyacrylamide i roto i te otinga. I muri i te huringa o te polycrolayzed polyacrylamide ka rewa i roto i te wai, kaore i te raru ki te kino o Macromolecules. Ko te aukati i waenga i nga ngota me te aukati koiora i waenga i nga waahanga mekameka rereke i runga i te taua ngota i te taua o te otinga ka taea e nga ngota te whai i nga ngota. Koinei te take i taea ai e te polyryyzed polyylaryzed te whakanui ake i te ahua o tona otinga.
3. Tuhinga o mua
The number of cationic groups in the molecular chain of polyacrylamide is larger than that of anionic groups, the net charge is larger, and the polarity is larger. H2O is a polar molecule. According to the principle of like dissolves like, the polymer has good water solubility and high intrinsic viscosity. With the increase of mineral content, the positive electrostatic charge is surrounded by anions to form an ionic atmosphere, which combines with the surrounding positive electrostatic charge, and the polarity of the polymer solution decreases and the viscosity decreases. With the increase of mineral concentration, the positive and negative ion groups form intramolecular or intermolecular hydrogen bond association (causing the solubility of the polymer in water to decrease). At the same time, the added salt ions shield the positive and negative charges, break up the association between positive and negative ions, and destroy the formed salt bonds (causing the solubility of the polymer in water to increase). These two effects compete with each other, so that the viscosity of the polymer solution remains small at a higher salt concentration (>0.06 mol / l).
4. Te Paanga o te taumaha o te waikawa i runga i te tirohanga o te polyacrylamide
Ko te tirohanga o te otinga polyacrylamide ka piki ake me te piki o te taumaha o te waikawa polymer. Na te mea na te mea ko te matawai o te otinga polymer ka hangaia e te taunekeneke i waenga i nga ngota i te wa o te nekehanga ngota. I te wa e 106, ka tiimata nga tiihi polymer ki te kuhu atu ki a raua ano, he nui te paanga o te maarama o te maama. I te wa e teitei ake ana te ihirangi, he nui te kaha o te hinonga miihini ki te pa ki te tirohanga. I te mea he iti rawa te kiko, ko te otinga polymer ka kiia he hanganga whatunga, me te taapiri miihini me nga here hiko i waenga i nga mekameka ka hangaia nga kohinga o te whatunga. Ka teitei ake te ihirangi, kei roto i te otinga te maha o nga whakapiri whakapiri mekameka, te hanga i te kirihou polymer. Na reira, ko te nui ake o te papatipu o te polymer, ko te mea ngawari ake mo nga ngota hei hanga i nga haonga mekameka, me te nui o te whakamaaro o te otinga.
