pāpāho PTFEKo te tikanga, e pā ana ki tētahi mea hanga mai i te polytetrafluoroethylene (PTFE te whakarapopototanga). Anei tētahi whakataki taipitopito mō ngā mea PTFE:
Ⅰ. Ngā āhuatanga rauemi
1. Te pumau matū
He rauemi tino pumau te PTFE. He kaha tōna ātete matū, ā, he koretake ki te nuinga o ngā matū. Hei tauira, i roto i te taiao o ngā waikawa kaha (pēnei i te waikawa whanariki, te waikawa hauota, me ētahi atu), ngā turanga kaha (pēnei i te hauwai konutai, me ētahi atu) me te maha o ngā whakarewa waro (pēnei i te benzene, te toluene, me ētahi atu), kāore ngā rauemi PTFE e tauhohe matū. Nā tēnei ka tino rongonui i roto i ngā tono pēnei i ngā hiri me ngā arai paipa i roto i ngā ahumahi matū me te rongoā, nā te mea he maha ngā wā me mahi ēnei ahumahi ki ngā momo matū uaua.
2. Ātete pāmahana
Ka taea e te pāpāho PTFE te pupuri i tana mahi i roto i te whānuitanga o te pāmahana. Ka taea te mahi noa i roto i te whānuitanga pāmahana mai i te -200℃ ki te 260℃. I ngā pāmahana iti, e kore e pakarukaru; i ngā pāmahana teitei, e kore e pirau, e kore hoki e memeha ngāwari pērā i ētahi kirihou noa. Nā te ātete pai ki te pāmahana, he mea nui ngā whakamahinga o te pāpāho PTFE i roto i te rererangi, te hikohiko me ētahi atu mara. Hei tauira, i roto i te pūnaha waipēhi o te waka rererangi, ka taea e te pāpāho PTFE te tu atu i te pāmahana teitei e puta mai ana i ngā huringa pāmahana taiao me te whakahaere pūnaha i te wā e rere ana.
3. Te tauwehenga waku iti
He tino iti te tauwehenga waku o te PTFE, ko tētahi o ngā mea tino iti rawa i roto i ngā rauemi totoka e mōhiotia ana. He tino iti ngā tauwehenga waku hihiri me ngā tauwehenga waku pumau, tata ki te 0.04. Nā tēnei ka tino whai hua te PTFE dielectric ina whakamahia hei hinu whakahinuhinu i roto i ngā wāhanga mīhini. Hei tauira, i roto i ētahi taputapu tuku mīhini, ka taea e ngā peera, ngā pū rānei i hangaia ki te PTFE te whakaiti i te waku i waenga i ngā wāhanga mīhini, te whakaiti i te whakapaunga pūngao, me te whakaroa i te roa o te ora o te taputapu.
4. Te whakamarumaru hiko
He pai ngā āhuatanga ārai hiko o te PTFE. Ka mau tonu te ātete ārai teitei i runga i te whānuitanga o ngā auau. I roto i ngā taputapu hiko, ka taea te whakamahi i te PTFE dielectric hei hanga rauemi ārai, pērā i te paparanga ārai o ngā waea me ngā taura. Ka taea e ia te ārai i te turuturu o te iahiko, te whakarite i te mahi noa o ngā taputapu hiko, me te ātete i te pokanoa hikohiko o waho.
Hei tauira, i roto i ngā taura whakawhitiwhiti tere-teitei, ka taea e te paparanga whakamarumaru PTFE te whakarite i te pumau me te tika o te tuku tohu.
5. Kāore e piri
He kaha te kore-piri o te mata o te PTFE dielectric. Nā te mea he tino teitei te irahiko o ngā ngota fluorine i roto i te hanganga ngota PTFE, ka uaua ai te hono matū o te mata PTFE ki ētahi atu matū. Nā tēnei kore-piri ka whakamahia whānuitia te PTFE i roto i ngā paninga mō ngā taputapu tunu kai (pērā i ngā paraharaha kore-piri). Ina tunua te kai i roto i te paraharaha kore-piri, e kore e piri ngāwari ki te pakitara o te paraharaha, ka māmā ake te horoi, ā, ka whakaitihia te nui o te hinu e whakamahia ana i te wā tunu.
He aha te rerekētanga i waenga i te PVDF me te PTFE?
He pūmua fluorinated te PVDF (polyvinylidene fluoride) me te PTFE (polytetrafluoroethylene) he rite tonu ō rāua āhuatanga, engari he rerekētanga nui anō hoki ō rāua hanganga matū, mahi me te whakamahinga. Ko ngā rerekētanga matua e whai ake nei:
Ⅰ. Hanganga matū
PVDF:
Ko te hanganga matū ko CH2−CF2n, he pūmua haurua-kiriata.
Kei roto i te mekameka ngota ngā waeine methylene (-CH2-) me te trifluoromethyl (-CF2-) e taupatupatu ana.
PTFE:
Ko te hanganga matū ko CF2−CF2n, he perfluoropolymer.
Ko te mekameka ngota ngota he mea tito katoa mai i ngā ngota wheorā me ngā ngota waro, engari kāore he ngota hauwai.
II. Te whakataurite i te mahi
| Tāurangi Mahi | PVDF | PTFE |
| Ātete matū | He pai te ātete matū, engari kāore i te rite te pai ki te PTFE. He pai te ātete ki te nuinga o ngā waikawa, ngā kawa me ngā whakarewa waro, engari he iti te ātete ki ngā kawa kaha i ngā pāmahana teitei. | Kāore e pāngia e te nuinga o ngā matū, ā, he tino ātete ki ngā matū. |
| Ātete pāmahana | Ko te awhe pāmahana whakahaere he -40℃～150℃, ā, ka heke te mahi i ngā pāmahana tiketike. | Ko te awhe pāmahana whakahaere ko -200℃～260℃, ā, he tino pai te ātete ki te pāmahana. |
| Te kaha miihini | He teitei te kaha ā-mīhini, he pai te kaha kume me te ātete pānga. | He iti te kaha ā-ringa, engari he pai te ngāwari me te ātete ki te ngenge. |
| Tauwehenga waku | He iti te tauwehenga waku, engari he teitei ake i te PTFE. | He tino iti te tauwehenga waku, ko tētahi o ngā mea tino iti rawa o ngā rauemi totoka e mōhiotia ana. |
| Te whakamarumaru hiko | He pai te mahi ārai hiko, engari kāore i te rite te pai ki te PTFE. | He tino pai te mahi ārai hiko, he pai mō ngā taiao auau teitei me te ngaohiko teitei. |
| Kore-piripiri | He pai te kore-piri, engari kāore i te rite te pai ki te PTFE. | He tino kaha, ā, kāore e piri, koia te rauemi matua mō ngā paninga paraharaha kore-piri. |
| Te āheinga tukatuka | He māmā te tukatuka, ā, ka taea te hanga mā roto i ngā tikanga tuku iho pērā i te werohanga whakarewa me te extrusion. | He uaua ki te tukatuka, ā, e hiahiatia ana he tikanga tukatuka motuhake pēnei i te sintering. |
| Kiato | Ko te mātotoru he tata ki te 1.75 karamu/cm³, he āhua māmā. | Ko te mātotoru he 2.15 karamu/cm³, he taumaha rawa. |
Ⅲ. Ngā āpure tono
| Ngā tono | PVDF | PTFE |
| Ahumahi matū | Whakamahia hei hanga paipa, takirere, papu me ētahi atu taputapu ātete-waikura, he mea tino pai mō te whakahaere i ngā taiao waikawa, kawakore rānei. | He whānuitia te whakamahinga i roto i ngā arai, ngā hiri, ngā paipa, me ētahi atu o ngā taputapu matū, he pai hoki mō ngā taiao matū tino kino. |
| Ahumahi hiko | Whakamahia hei hanga whare, paparanga whakamarumaru, me ētahi atu o ngā wāhanga hiko, e tika ana mō ngā taiao auau waenga me te ngaohiko. | Whakamahia hei hanga wāhanga ārai o ngā taura auau-tiketike me ngā hononga hiko, e tika ana mō ngā taiao auau-tiketike me ngā taiao ngaohiko-tiketike. |
| Ahumahi mīhini | Whakamahia hei hanga i ngā wāhanga mīhini, ngā peera, ngā hiri, me ētahi atu, e tika ana mō ngā taiao kawenga waenga me te pāmahana. | Whakamahia ana hei hanga i ngā wāhanga iti-waku, i ngā hiri, me ētahi atu, e tika ana mō ngā taiao pāmahana tiketike me te waku iti. |
| Ahumahi kai me te rongoā | Whakamahia hei hanga i ngā wāhanga o ngā taputapu tukatuka kai, ngā arai o ngā taputapu rongoā, me ētahi atu, e tika ana mō ngā taiao pāmahana reo me ngā taiao matū. | Whakamahia hei hanga i ngā paninga paraharaha kore-piri, ngā whitiki kawe kai, ngā arai o ngā taputapu rongoā, me ētahi atu, e tika ana mō ngā taiao matū wera nui me te kaha. |
| Ahumahi hangahanga | Whakamahia hei hanga rauemi pakitara o waho o te whare, rauemi tuanui, me ētahi atu, he ātete pai ki te huarere, ā, he ātaahua hoki. | Whakamahia hei hanga rauemi hiri hangahanga, rauemi ātete wai, me ētahi atu, e tika ana mō ngā taiao tino kino. |
Ⅳ. Utu
PVDF: He iti te utu, he iti ake te utu.
PTFE: Nā te hangarau tukatuka motuhake me te mahi tino pai, he nui ake te utu.
Ⅴ. Pānga ki te taiao
PVDF: Tērā pea ka tukuna he iti noa ngā hau kino i ngā pāmahana tiketike, engari he iti noa te pānga ki te taiao whānui.
PTFE: Tērā pea ka tukuna ngā matū kino pēnei i te waikawa perfluorooctanoic (PFOA) i ngā pāmahana tiketike, engari kua tino whakaitihia tēnei mōrearea e ngā tukanga whakaputa hou.
Wā tuku: Mei-09-2025