Ngongo PTFE vs PFA vs FEP

Tērā pea kua tūtaki koe ki tēnei raruraru tawhito i te wā e whiriwhiri ana i ngā rauemi: PTFE, PFA, me te FEP – ahakoa he rite te tangi o ō rātou ingoa, he rerekē ngā āhuatanga mahi o ia rauemi. Mā te whiriwhiri i te kōwhiringa hē ka arahi pea ki te nui rawa o ngā utu, ki te whakaroa rānei i ngā kaupapa. Nā roto i ngā taunekeneke a te kiritaki, kua kite mātou he tokomaha e whakaaro ana ki ngā "paipa fluoroplastic" hei kāwai whānui, ā, ka mōhio noa kua whiriwhiria e rātou te rauemi hē ina puta mai ngā raruraru taputapu. Mā tēnei tuhinga ka mārama te māramatanga ki ngā rerekētanga matua i waenga i ēnei rauemi e toru me te take i whiriwhiria ai.

• Ko te PTFE te mea tino ātete ki te pāmahana me te ātete matū tino kaha, engari he mātotoru, ā, kāore e taea te whakarewa, te whakapiri rānei.

• Ka whakakotahi te PFA i te ātete pāmahana, te māramatanga, me te āheinga whakarewa, ā, koinei te rauemi pai mō ngā tono haurua-ira me ngā taiao parakore teitei.

• Ko te FEP te rauemi tino ngāwari me te mārama, he iti ake te ātete ki te pāmahana, he mea tino pai mō ngā ara rere tirohanga me ngā tono pāmahana iti.

• Te whakatauranga utu o ngā rauemi e toru: FEP

• Ehara te kī ki te whiriwhiri i "ko tēhea kōwhiringa te mea pai ake," engari ko "ko tēhea āhuatanga mahi me matua whakarite kia rite ki ō whakaritenga whakahaere."

He aha ngā PTFE, PFA, me te FEP?

Nō te whānau fluoropolymer ngā rauemi e toru, ā, he hononga waro-fluorine tō rātou hei wāhanga hanganga matua. Heoi, ko ngā rerekētanga o ēnei ngota matua e whakatau ana i ā rātou whakaritenga tukatuka me ngā āhuatanga ā-tinana. Ko te mārama ki ngā āhuatanga matua o ia rauemi te tūāpapa mō te whakatau i ngā paearu kōwhiringa.

PTFE (Polytetrafluoroethylene)

Ko te PTFE te fluoropolymer tuatahi i whakamahia i roto i te ahumahi, i kitea e DuPont i te tau 1938; ko tōna ingoa hokohoko ko Teflon® e pā ana ki te PTFE. Ko tōna mekameka ngota he mea hanga katoa ki ngā ngota waro me te fluorine, kāore he mekameka taha, he mekameka peka rānei—nā tēnei hanganga he tino ātete matū me te ātete pāmahana, engari kāore hoki e taea te rewa mō te tukatuka, ka taea anake te whakaputa, te hanga rānei.

• Awhe pāmahana mahi:-65°C ki te +260°C

• Āhua: mā te miraka

• Ngā Āhuatanga: te tauwehenga waku (0.11), te ātete matū pai rawa atu, me ngā āhuatanga dielectric tino pai

• Tikanga tukatuka: Te whakaputanga whakapiri, te whakakōpeketanga pokepokea ai rānei; kāore e whakaaetia te werohanga pokepokea ai, te whakarewa wera rānei.

I roto i te katoaNgongo PTFE, ko te PTFE te wāhanga tino whānui. Ka whakaputa motuhake a Besteflon i ngā hua katoa—mai i ngā ngongo capillary 0.3 mm te whānui ki ngā paipa ahumahi 50mm te whānui—mā roto i ngā tukanga extrusion.

PFA (Perfluoroalkoxy)

Ka whakauruhia e te PFA ngā mekameka taha perfluoroalkoxy ki te mekameka ngota PTFE, ka whakawhiwhia ki te ngāwari ki te tukatuka rewa—ka taea te werohanga, te whakarewa wera-rewa, me te whakaatu i te māramatanga whatu kua whakarei ake. He tata rite tonu tōna ātete matū me te pumau pāmahana ki ērā o te PTFE, ahakoa he nui ake te utu.

• Awhe pāmahana mahi: -200°C ki te +260°C

• Āhua: āhua-mārama ki te mārama

• Ngā Āhuatanga: Ka taea te rewa mō te tukatuka, ka taea te whakarewa, he tino parakore (he iti te ua), he mārama

• Ngā tikanga tukatuka: E tika ana te whakamahi i te whakaputanga, te whakahāngai werohanga, me te whakarewa wera-rewa.

Ko te PFA te rauemi paerewa mō te hanga haurua-ira me te kawe wai parakore-teitei, nā te mea e tuku ana i te māramatanga me te kaha whakarewa me te pupuri tonu i te ātete matū taumata PTFE. Ina aroturukihia ana te āhua o te wai i roto i ngā paipa, ina whakarewahia rānei ngā rauemi paipa ki ngā hononga, ka whakaratohia e te PFA ngā āheinga kāore e taea e te PTFE te rite.

FEP (Pōpirīne Etirene Kua Whakapūhautia)

Ko te FEP he copolymer o te PTFE me te hexafluoropropylene, me ngā rōpū taha-CF₃ kua whakaurua ki roto i tana mekameka ngota. Nā tēnei hanganga ka waiho te FEP hei rauemi tukatuka tino ngāwari i roto i ngā mea e toru—e tohuhia ana e te iti o te ira rewa, te pai ake o te rere, me te māramatanga me te ngāwari tino pai. Heoi, ko tōna ātete pāmahana mōrahi he tata ki te 60 °C te iti iho i te PTFE me te PFA.

• Awhe pāmahana mahi: -200°C ki te +200°C

• Āhua: Mārama

• Ngā Āhuatanga: Tino mārama, tino ngāwari, iti rawa te utu tukatuka, ā, he pai mō te whakarewa wera-rewa

• Ngā tikanga tukatuka: te whakaputanga, te whakahāngai werohanga, te whakarewa wera-rewa

Ko te FEP te otinga tino whai hua ina whakamahia ana, me te kore e hiahiatia he pāmahana e eke ki te 260°C. He whānuitia te whakamahinga i roto i ngā ara rere tirohanga, ngā pūnaha kawe matū pāmahana-iti, me ngā whatunga paipa e hiahia ana kia piko, kia piko rānei.

PTFE vs PFA vs FEP: Whakataurite 7-Ahu

Nā te mea kua mārama ngā whakamāramatanga, ka neke atu tātou ki te wāhanga tino nui o te kōwhiringa rauemi tuturu: te whakatairite tika i ngā rauemi e toru puta noa i ngā āhuatanga matua e whitu. Ko ēnei paearu e whitu ngā āhuatanga matua e whakaarohia ana e ngā tīma hokohoko pakihi-ki-te-pākihi i te wā e whiriwhiri ana i ngā rauemi, ā, ko ngā rerekētanga o ia āhuatanga ka noho hei take whakatau mō te whiriwhiri, te whakakore rānei i tētahi rauemi.

 

Ngā kaupapa aromatawai matua:

• Ki te hiahia koe ki te 260°C, kāore e whakamahia te FEP; ko te PTFE, ko te PFA rānei anake hei kōwhiringa.

• Mena e hiahiatia ana te māramatanga, kāore te PTFE e whakaaetia; e whakaaetia ana te PFA me te FEP.

• Ki te hiahia koe ki te whakarewa i tētahi pūnaha paipa, whakamahia he whakamahana PTFE

• Mena kei te hiahia koe i te kounga epitaxial iti rawa (te taumata semiconductor), ko te PFA anake te kōwhiringa.

• Mena he rawaka te 200°C, ā, he āwangawanga te tahua, ko te FEP te ōwehenga utu-mahi pai rawa atu.

Ko tēhea rauemi e ōrite ana ki tō tono?

E whakaatu ana te ripanga whakatairite whānui i ngā rerekētanga tawhā puta noa i ngā inenga, engari ehara i te mea ko ngā tawhā tonu te mea nui i roto i te kōwhiringa—engari ko tēhea āhuatanga mahi e tino hiahiatia ana e ō whakaritenga whakahaere. Kei raro nei ngā taunakitanga kōwhiringa whai hua kua whakaritea mō ngā āhuatanga ahumahi motuhake.

 

 

Ngā Taunakitanga Hanga mō Besteflon: Ka whakaputahia e mātou te whānuitanga katoa o ngā hua ngongo PTFE(Ngā ngongo kapiti PTFE,Ngā ngongo maeneene PTFE, Ngā ngongo PTFE whakapiko). Mena kāore koe i te tino mōhio i waenga i te PTFE me te PFA/FEP, homai noa mai ō whakaritenga tono me ngā tawhā whakahaere. Ka aromatawaihia e ā mātou kaihangarau mēnā ka tutuki i te PTFE ō hiahia—he maha ngā wā, he rawaka te PTFE, ka whakakorea ngā utu koretake mō ngā āhuatanga kāore koe e whakamahi.

Rākau Whakatau: PTFE, PFA, FEP rānei?

Ka hipokina e te ripanga whakatairite me te ripanga taurite tono te nuinga o ngā horopaki, engari ko ētahi kaupapa e hiahia ana kia whakakotahihia ngā huarahi e rua, kia hiahiatia ai he anga aromatawai pūnaha ake. Mā te rākau whakatau i raro nei koe e āwhina ki te whakawhāiti i ngā kōwhiringa taahiraa i te taahiraa i runga i ngā here mahi tino nui.

 

Hipanga 1 —Te whakaritenga ātete pāmahana

Kei runga ake i te 200℃ te pāmahana mahi mōrahi o tō pūnaha?

•ĀE →Whakakorea te FEP ka haere tonu ki te Hipanga 2

• Kāore →E whakaaetia ana ngā rauemi e toru; haere tonu ki te Hipanga 3

 

Hipanga 2 — PTFE or PFA?

E hiahia ana koe ki ngā pūkenga mārama, ki ngā pūkenga whakarewa rānei?

•Me mārama te kōrero →Tīpakohia te PFA

•Me hiahia Whakarewa →Tīpakohia te PFA

•Kāore tetahi o aua mea e hiahiatia ana. →Kōwhiria te PTFE (He nui ake te whai huatanga o te utu me te ātete matū pai rawa atu)

 

Hipanga 3 —Kōwhiria tētahi o ngā mea e toru

He aha tāu e whakarōpū ana i mua?

•Ātete matū/Tauwehenga waku/Ngā āhuatanga hiko-kore →Tīpakohia te PTFE

•Te Parakore/Te Whakarewa/Te Māramatanga →Tīpakohia te PFA

•Māramatanga/Ngāwari/Utu →Tīpakohia te FEP

 

Ngā Āhuatanga Motuhake：

• Ngā ngongo hauora e hiahia ana ki te tiwhikete USP Akomanga VI→PTFE, PFA rānei, i runga i te pakeke me te māramatanga e hiahiatia ana.

• me tino teitei te parakore (te taumata hiko hiko)→ PFA

• E hiahiatia ana he hanganga kōpikopiko hei whakaū i te piko.→ PTFE（Ko ngā ngongo PTFE miro a Besteflon e tohu ana i tētahi raina hua kua pakeke.)

• He iti te tahua, engari ka rawaka te 200℃.→ FEP

 

He ahaamō te ePTFE me te Teflon?

I a koe e rapu ana i ngā rauemi paipa fluoropolymer, tera pea ka tūtaki koe ki ētahi kupu e rua e whakahuatia pinepine ana: ePTFE me Teflon. He aha te whanaungatanga o ēnei ki ngā rauemi e toru kua kōrerohia i roto i tēnei tuhinga? Kei raro nei he whakamārama poto hei karo i te whakapoauau.

ePTFE me te PTFE

Ko te ePTFE (expanded polytetrafluoroethylene) he momo PTFE i hangaia mā te totoro me te whakawhanui, he hanganga ā-roto moroiti. Ahakoa e mau tonu ana te koretake o te matū o te PTFE, he iti rawa te kaha o te manawa o te ePTFE, ā, he iti rawa te mātotoru, e whakamahia nuitia ana mō ngā gaskets (hei tauira, ngā rīpene hiri Gore-Tex®) me ngā kiriuhi manawa, kaua hei rauemi ngongo. Ina kōrerohia te "ngongo ePTFE," he paipa PTFE pea te tikanga, ahakoa kāore pea i te tino tika tēnei whakaahuatanga.

Teflon me te PTFE

He tohu hokohoko rēhita a Teflon® mō te PTFE nā Chemours (ko DuPont i mua). Ko Teflon te tikanga mō te PTFE, pērā i a Kleenex e tohu ana i ngā tauera pepa. Heoi, i roto i ngā mahi ahumahi, ka whakamahia te "ngā ngongo Teflon" hei whakakapi i te ngongo PFA, FEP rānei, nā te mea ka hokohoko hoki a Chemours i ngā hua PFA me FEP i raro i te waitohu Teflon®. Mena ka tohua e koe te "ngā ngongo Teflon" i runga i tō ota hoko, ka pātai pea ngā kaiwhakarato ko tēhea momo e hiahiatia ana e koe—PTFE, PFA, FEP rānei. Mō ētahi atu kōrero, tirohia tā mātou tuhinga kē atu:PTFE me Teflon: He rite tonu ngā rauemi e rua?

Ngā Pātai Auau

I nāianei, kua mārama kē koe ki ngā rerekētanga o ēnei rauemi e toru. Kei raro nei ngā pātai e pātaihia ana e ngā kiritaki i te wā whiriwhiri—mēnā kāore anō kia whakautua ētahi o ō āwangawanga, whakapā atu ki ngā miihini o Besteflon mō te āwhina wawe.

Q: He ōrite tonu te ātete matū o te PTFE me te PFA?

A: I roto i te nuinga o ngā matū, he tata rite te ātete matū o ngā rauemi e rua. Ka kitea ngā rerekētanga i raro i ētahi āhuatanga tino uaua: He pai ake te pumau o te PFA ina pāngia e ngā pāmahana teitei me ngā kawakore kukū mō ngā wā roa, engari he kaha ake te ātete ngoki o te PTFE i raro i ngā āhuatanga pāmahana me te pēhanga teitei. Mō te 99% o ngā tono ahumahi, ka taea te kī he ōrite te ātete matū.

 

Q: He tino tika te rohenga o runga o te 200°C mō te FEP? Ka taea te whakamahi i raro i ngā āhuatanga werawera poto?

A: Ko te 200°C te pāmahana mahi tonu mōrahi mō te FEP. Ahakoa ka taea e te wā poto te tu atu i ngā pāmahana o te 205–210°C, ko te wā roa ki runga ake i te 200°C ka tere ake te koroheketanga o ngā rauemi, ā, ka whakaiti i te kaha ā-ringa. Mena ka pāngia tō pūnaha e te wera nui mō te wā poto, me whiriwhiri tika koe i te PTFE, i te PFA rānei.

 

Q: He aha te nui ake o te utu o te PFA i te PTFE?

A: He nui ake ngā utu mō ngā rauemi mata o te PFA (nā te nui o te utu o ngā monomers copolymer perfluoroalkyl vinyl ether) me te whaiti o te awhe pāmahana tukatuka, ka iti ake te hua; heoi anō, ko te tuku mākete kei roto i ētahi kaihanga matū. Mena kāore koe e hiahia ki ngā painga ahurei o te PFA—pērā i te mārama, te kaha ki te whakarewa, te tino parakore rānei—ko te PTFE te kōwhiringa whai hua ake.

 

Q: Ko tēhea o ngā rauemi e toru te mea ngāwari ki te tukatuka me te whakarite?

A: Ko te FEP te rauemi tino pai—he iti te ira rewa me te tino rere, he pai mō te whakaputa me te werohanga i ngā āhua uaua. Ko te PFA te mea e whai ake nei, e hiahia ana ki ngā pāmahana tukatuka teitei ake engari he mea ka taea te whakakoi. Ko te PTFE te kōwhiringa kāore i te tino pai—ka taea anake te whakaputa hei whakapiri, te whakarewa rānei mā te whakakoi, kāore e taea te werohanga, ā, he iti rawa te ngāwari o te hanga āhua ritenga. Koinei te take e hiahiatia ai he arotake hangarau mō ngā ota ritenga PTFE a Besteflon: kāore e taea te whakamahi i ngā whakatakotoranga katoa.

 

Q: Me whiwhi tiwhikete hauora taku kaupapa; he pai katoa ngā rauemi e toru?

A: Kua whakatūria e te PTFE me te PFA ngā ara tiwhikete taumata-hauora (USP Class VI, ISO 10993), engari he iti ake ngā tono taumata-hauora a te FEP. Ko te kōwhiringa motuhake ka whakawhirinaki ki ngā whakaritenga o tō pūrere e pā ana ki te pakeke o te ngongo, te mārama, me te ātete ki te pāmahana.