Ko te pvdf pvdf pvdf hvdrophilic:

Ko te polyvinylidene floride he momo o te crystalline polymer. He pai te pumau o te matū, te kaha o te wera me te kaha o te miihini, ka taea te rewa i roto i etahi whakarewa o te papatipu kaha i te pāmahana iti. Ko tenei rawa ka ngawari ki te miihini faafariutanga o te raupapa, me tenei rauemi membrane hou o te polymer hou.

Ko te PVDF he momo polymer me te kaha pai me te pumau matū, a he mea pai te maimoatanga maimoatanga mo te taera me te waitaha wainga. Heoi, na te mea ko te pvdf membrane he ngoikore i roto i te wai, he raru kei te maimoatanga o te wai taera me te waikano. Na reira, he mea tika kia whakarereke i ana mahi me te whakapai ake i tana mahi ma te waiariki me te waikano. Kua whakamahia te membrane wehenga o PVDF i te umanga matū, te kai, te rongoa me te pera. Heoi, he iti rawa te kaha o te mata o te PVDF, a he tino hydrophobic tenei rauemi i muri i te wa o te hanga kiriata. Na reira, ka tono i te wehenga o te hinu hinu me te wai (ina koa ko te otinga o te pūmua), ka nui ake te pirau a te adsription, a ka tino pirau te rewharewha. Ma tenei ka whakaiti i te ora ratonga o te membrane me te whakanui ake i te utu o te mahi, na reira kua aukatia te tono o te waahanga wehenga membrane.

Ngā momo rauemi:

Kei te whakamahia whānuitia nga rauemi kiriata polyvinylidene fluoriden flore. I whakaritea ki te polyethylene, polypropylene, polyvinyl chloride, me etahi atu painga, penei i te waikawa me te kaha o te alkali, te kaha o te matū, te kaha o te matū, te kaha wehenga. Ko enei painga e pa ana ki te polyvinylidene fluoride he momo crystalline pai rawa atu.

Ko te taumahatanga o te pvdf polymer ko te nuinga o te 4 ^ 5 ~ 8 × 10 × 10 × 10 × 10 ×, Ko te Raarangi Whakawhitiwhiti kei runga ake nei. 50 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~ 150 ~. I tetahi pāmahana me te pehanga ka mau tonu te kaha o te kaha (penei i te pehanga kawenga 0.45mmpa, te pāmahana pāmahana wera o te 150 ℃). He pai te PVDF i te parekura a te tau, me te kiriata kaore ano kia ngoikore, ka ngotea ana ka whakanohohia ki waho 10 ki te 20 tau. I tua atu, he pai tana pumau, he rewa noa i te Dimethyl Ko nga whakarewa kaore e pa ki a ia. Na enei ahuatanga tino pai, ka riro ko PVDF he taonga miihini motuhake.

Membrane Te Hanganga Hangarau:

Ko te tikanga whakarite o te pvdf membrane ko te tikanga hurihuri o te waahanga, he ngawari, he nui hoki te whakamahi i te tikanga whakarite membrane. Na reira, ko te membrane te hanga mehua o te membrane pvdf i whakauruhia mai i runga i te tikanga hurihuri. Ko te whakarite i te membrane pvdf e te tikanga o te huringa faafariunga waahanga e whakaahuatia ana i raro nei. Ko te kiriata - Ko te tikanga o te tukanga o te membrane pvdf e wehea ana kia toru nga waahanga matua.

Wāhanga 1: Nga mahi whakakorekore. I roto i tenei waa, ka mau tonu te wai whakaheke i te whenua hotogeneous, engari ko te kukume haruru i timata ki te hanga i te waahanga o te ripeka - waahanga o te kiriata kiriata. Ko nga take nui mo te hanganga o te Grant Gradient ko te whakaetonga o te whakarewa, te whakauru o te hau kore-whakarewa, whakarewa, me te kore e rua nga wehewehe.

Wāhanga 2: Te mahinga wehenga o te Wahanga. I te mea ko te kaha o te punaha o te punaha kei te heke haere tonu, ka tiimata te mate thermodynamic ki te ngaro me te wehewehe i nga waahanga wehe i te wa ano. E rua nga tukanga wehenga waahanga matua. Ko te wai - Ko te wehenga o te waahanga wai ka puta mo te Amorphoumer Amorphous, me te wai - Te wehenga wahanga o te Wahanga me te Haka - Ko te wehenga o te waahanga o te wai ka puta mo te Crystalline Polymer penei i te PvDF.

Wāhanga 3: Te tukanga raina. Kei roto i te nuinga o te kohinga o te membrane pore, te whakawhiti i te rere me te whakakoi i te waahanga taonga polymer. He nui te mana o tenei waahanga mo te morphology whakamutunga me te hanganga o te membrane polymer, engari ehara i te mea nui e pa ana ki te pore - te hanga. Ko te kaupapa whakatau ko te waahanga wehenga o te wai membrane.