Polytetrafluoroethylene (PTFE)na polyester (dị ka PET, PBT, wdg) bụ ihe abụọ dị iche iche polymer. Ha nwere nnukwu ọdịiche dị na nhazi kemịkalụ, njirimara arụmọrụ na mpaghara ngwa. Nke a bụ ntụnyere zuru ezu:
1. Chemical Ọdịdị na mejupụtara
Polytetrafluoroethylene (PTFE)
●Nhazi: Ihe mejupụtara ya bụ ụdọ carbon atom na atom fluorine nke juru eju (-CF).₂-CF₂-), na ọ bụ fluoropolymer.
●Atụmatụ: Njikọ carbon-fluorine siri ike na-enye ya nnukwu inertness kemịkalụ na nguzogide ihu igwe.
Polyester
●Nhazi: Isi yinye nwere otu ester (-COO-), dị ka PET (polyethylene terephthalate) na PBT (polybutylene terephthalate).
●Atụmatụ: Njikọ ester na-enye ya ike na-arụ ọrụ nke ọma na nhazi nhazi, mana nkwụsi ike ya dị ala karịa nke PTFE.
2. Ntụnyere arụmọrụ
| Njirimara | PTFE | Polyester (dị ka PET) |
| Nguzogide okpomọkụ | - Okpomọkụ na-aga n'ihu: -200°C ruo 260°C | - PET: -40°C ruo 70°C (ogologo oge) |
| Nkwụsi ike nke kemịkal | Na-eguzogide ihe fọrọ nke nta ka ọ bụrụ acid niile, alkalis na ihe mgbaze ("eze plastik") | Na-eguzogide acids na-adịghị ike na alkalis, ngwa ngwa nke acid siri ike na alkalis mebiri emebi |
| Ọnụọgụ esemokwu | Dị oke ala (0.04, mmanye onwe ya) | Nke dị elu (chọrọ mgbakwunye iji melite) |
| Mechanical ike | Ala dị ala, dị mfe ịri | Elu (PET na-ejikarị na eriri na karama) |
| Njirimara dielectric | Ọkachamma (ihe mkpuchi mkpuchi na-adịkarị elu) | Ọ dị mma (ma ọ na-enwe mmetụta maka iru mmiri) |
| Isi ike nhazi | Ọ siri ike ịgbaze usoro (chọrọ sintering) | Enwere ike ịgbanye na extruded (dị mfe nhazi) |
Mpaghara ngwa
PTFE: a na-ejikarị eme ihe na mbara igwe, ngwa eletriki, ụlọ ọrụ kemịkalụ, nhazi nri, ahụike na mpaghara ndị ọzọ, a na-ejikarị eme akara, bearings, mkpuchi, ihe mkpuchi, wdg.
Polyester: a na-ejikarị ya na eriri textiles, karama plastik, ihe nkiri, plastik engineering na ubi ndị ọzọ
Echiche na-ezighi ezi
Ihe mkpuchi na-adịghị mma: PTFE (Teflon) na-ejikarị eme ihe na pans na-adịghị mma, ebe polyester enweghị ike iguzogide nri okpomọkụ.
Ubi eriri: Polyester eriri (dị ka polyester) bụ isi ihe maka uwe, naỌnụ ego nke PTFEa na-eji naanị maka ebumnuche pụrụ iche (dịka uwe nchebe kemịkal)
Kedu ka esi eji PTFE eme ihe na ụlọ ọrụ nri?
PTFE (polytetrafluoroethylene) nwere ọtụtụ ngwa dị iche iche na ụlọ ọrụ nri, ọkachasị n'ihi nkwụsi ike kemịkalụ ya dị mma, nkwụsi ike dị elu nke okpomọkụ, enweghị nrapado na ọnụọgụ esemokwu dị ala. Ndị a bụ isi ngwa nke PTFE na ụlọ ọrụ nri:
1. Ihe mkpuchi akụrụngwa nhazi nri
A na-eji mkpuchi PTFE eme ihe n'ọtụtụ ebe na mkpuchi na ọgwụgwọ elu nke akụrụngwa nhazi nri. Nkwụsịghị ya nwere ike igbochi nri ịrapagidesi ike n'elu akụrụngwa n'oge nhazi, si otú a na-eme ka usoro nhicha dị mfe ma melite mmepụta mmepụta. Dịka ọmụmaatụ, na akụrụngwa dị ka oven, steamer, na blenders, mkpuchi PTFE nwere ike hụ na nri anaghị agbaso n'oge nhazi okpomọkụ dị elu ma na-ejigide iguzosi ike n'ezi ihe na ịdị mma nke nri.
2. Ntufe eriri na ebufe eriri
A na-ejikarị eriri ebu na ebufe eriri PTFE kpuchie ya na nhazi nri a na-emepụta n'ọtụtụ ebe, dị ka isi nri na ibuga akwa, anụ ezi, sausaji, ọkụkọ, na hamburgers. Ọnụ ọgụgụ dị ala nke esemokwu na nguzogide okpomọkụ dị elu nke ihe a na-enyere ya aka ịrụ ọrụ nke ọma na gburugburu ebe okpomọkụ dị elu na-enweghị mmetọ nri.
3. Nri-ọkwa hoses
PTFE hoses na-ọtụtụ ebe maka njem nke nri na ihe ọṅụṅụ, gụnyere mmanya, biya, mmiri ara ehi ngwaahịa, sirop na seasonings. Inertness kemịkalụ ya na-eme ka o doo anya na ọ naghị emetụta ogo ngwaahịa ebufere na oke okpomọkụ nke -60.°C ruo 260°C, na anaghị ewebata agba, uto ma ọ bụ isi ọ bụla. Na mgbakwunye, PTFE hoses na-ezute ụkpụrụ FDA iji hụ na nchekwa nri.
4. Akara na gaskets
A na-eji akara PTFE na gaskets na njikọ nke ọkpọkọ, valves na paddles na-akpali akpali nke ngwa nhazi nri. Ha nwere ike iguzogide corrosion sitere na kemịkalụ dị iche iche ebe ha na-eguzosi ike na gburugburu ebe okpomọkụ dị elu. Akara ndị a nwere ike igbochi nri nke ọma ka emetọọ n'oge nhazi ma na-eme ka ihicha na mmezi ngwa dị mfe.
5. Ihe nkwakọ ngwaahịa nri
A na-ejikwa PTFE na ihe nkwakọ ngwaahịa nri, dị ka mkpuchi mkpuchi na-abụghị nke pan, ihe mkpuchi akwụkwọ, wdg. Ihe ndị a na-eme ka nri ghara ịkwado n'oge nkwakọ na nri, ebe ị na-edobe ịdị ọcha na nchekwa nri.
6. Ngwa ndị ọzọ
PTFE nwekwara ike ji mee ihe na gia, na-ebu bushings na engineering plastic akụkụ na nri nhazi, nke nwere ike melite eyi-eguzogide na corrosion iguzogide nke akụrụngwa mgbe ibelata mmezi ụgwọ.
Atụmatụ nchekwa
Ọ bụ ezie na PTFE nwere ọtụtụ ihe magburu onwe ya, ị ka kwesịrị ịṅa ntị na nchekwa ya mgbe ị na-eji ya na ụlọ ọrụ nri. PTFE nwere ike ịhapụ ọnụọgụ nke gas na-emerụ ahụ na oke okpomọkụ, ya mere ọ dị mkpa ijikwa ọnọdụ okpomọkụ ma zere ikpo ọkụ dị elu ogologo oge. Tụkwasị na nke a, ọ dị oké mkpa ịhọrọ ihe PTFE nke na-egbo mkpa usoro iwu dị mkpa.
Oge nzipu: Mar-26-2025