Polyolefin meafaitino, lauiloa mo a latou meatotino eletise sili ona lelei, faagasologa, ma le faatinoga o le siosiomaga, ua avea ma se tasi o mea e sili ona faʻaaogaina faʻapipiʻi ma mea faʻapipiʻi i le uaea ma le uaea.
Polyolefins o polymers maualuga-molecular-mamafa fa'apipi'iina mai monomers olefin pei ole ethylene, propylene, ma le butene. O loʻo faʻaaogaina tele i uaea, afifiina, fausiaina, taʻavale, ma falemaʻi.
I le gaosiga o uaea, o mea polyolefin e ofoina atu le maualalo o le dielectric tumau, sili atu le faʻaogaina, ma le mataʻina o vailaʻau, faʻamautinoa le tumau ma le saogalemu. O latou uiga e leai se mea halogen ma toe fa'aaogaina e fetaui lelei ma faiga fa'aonaponei ile gaosiga lanu meamata ma gafataulimaina.
I. Fa'avasegaga ile Ituaiga Monomer
1. Polyethylene (PE)
O le Polyethylene (PE) o se resini vevela polymerized mai ethylene monomers ma o se tasi o palasitika sili ona faʻaaogaina i le lalolagi atoa. Faʻavae i luga o le density ma le molecular structure, e vaevaeina i ituaiga LDPE, HDPE, LLDPE, ma XLPE.
(1)Polyethylene Low-Density (LDPE)
Fa'atulagaga: Fa'atupuina e le maualuga-omiga free-radical polymerization; o loʻo i ai le tele o filifili lala, ma le tioata o le 55-65% ma le mamafa o le 0.91-0.93 g / cm³.
Meatotino: Malu, manino, ma ete'e a'afiaga ae fa'afefeteina le vevela (e o'o atu ile 80 °C).
Talosaga: E masani ona faʻaaogaina e fai ma mea faʻapipiʻi mo fesoʻotaʻiga ma uaea faʻailoga, faapaleni fetuutuunai ma faʻamalama.
(2) Polyethylene High-Density (HDPE)
Fa'atulagaga: Polymerized i lalo o le mamafa o le mamafa ma le Ziegler-Natta catalysts; e itiiti pe leai ni lala, maualuga tioata (80-95%), ma le mamafa o le 0.94-0.96 g / cm³.
Meatotino: Malosi maualuga ma faʻamaʻaʻaina, sili ona lelei kemisi, ae faʻaititia teisi le malosi o le vevela.
Fa'aoga: Fa'aoga lautele mo fa'a'ese'ese fa'alava, ala feso'ota'iga, ma fa'alava uaea fiber optic, e maua ai le maualuga o le tau ma le puipuiga fa'ainisinia, aemaise lava mo mea fa'apipi'i i fafo po'o lalo.
(3) Linear Low-Density Polyethylene (LLDPE)
Fa'atulagaga: Copolymerized mai le ethylene ma le α-olefin, fa'atasi ai ma lala lala pupuu; mafiafia i le va o le 0.915–0.925 g/cm³.
Meatotino: Tu'ufa'atasi le fetuutuuna'i ma le malosi fa'atasi ai ma le lelei tele o le tu'i.
Talosaga: E fetaui lelei mo mea fa'apipi'i ma mea fa'apipi'i i uaea la'ititi ma feololo-voltage ma uaea fa'atonutonu, fa'aleleia le a'afiaga ma le fa'apa'u.
(4)Polyethylene Feso'ota'i (XLPE)
Fa'atulagaga: O se feso'ota'iga e tolu-dimensional e faia e ala i vaila'au po'o feso'ota'iga fa'aletino (silane, peroxide, po'o le eletise-beam).
Meatotino: Tulaga mata'utia tete'e vevela, malosi fa'ainisinia, fa'a'ese'ese eletise, ma le tau.
Fa'aoga: Fa'aoga tele i uaea eletise feololo ma le maualuga, uaea fou malosi, ma uaea ta'avale ta'avale - o se mea fa'apipi'i masani i le gaosiga o uaea fa'aonaponei.
2. Polypropylene (PP)
Polypropylene (PP), polymerized mai propylene, ei ai le mamafa o le 0.89–0.92 g/cm³, o le liusuavai o le 164–176 °C, ma le fa'aogaina o le vevela o le -30 °C i le 140 °C.
Meatotino: Mamafa, maualuga le malosi faʻainisinia, sili atu vailaʻau faʻamalosi, ma sili atu le faʻaogaina o le eletise.
Fa'aoga: Fa'aaoga muamua e fai ma mea fa'a'ese'ese e leai se halogen i totonu o uaea. Faatasi ai ma le faʻalauteleina o le faamamafa i le puipuiga o le siosiomaga, o le polypropylene fesoʻotaʻi (XLPP) ma le copolymer PP ua suia ua faʻateleina le suia o le polyethylene masani i le maualuga o le vevela ma le maualuga-voltage cable system, e pei o nofoaafi, malosi o le matagi, ma uaea taavale eletise.
3. Polybutylene (PB)
O le Polybutylene e aofia ai le Poly(1-butene) (PB-1) ma le Polyisobutylene (PIB).
Meatotino: E sili ona lelei le tete'e o le vevela, mautu vaila'au, ma le fetolofi.
Talosaga: PB-1 o loʻo faʻaaogaina i paipa, ata tifaga, ma afifiina, aʻo faʻaaogaina lautele le PIB i le gaosiga o le uaea e pei o se vai-blocking gel, sealant, ma faʻatumu faʻapipiʻi ona o lona le mafai ona faʻaogaina o le kesi ma vailaʻau faʻamaʻi-e masani ona faʻaaogaina i fiber optic cable mo le faʻamaufaʻailogaina ma le puipuiga o le susu.
II. Isi mea masani Polyolefin Mea
(1) Ethylene–Vinyl Acetate Copolymer (EVA)
O le EVA e tu'ufa'atasia le ethylene ma le vinyl acetate, fa'aalia ai le fetuutuuna'i ma le malulu (fa'aauau le fetuutuuna'i ile -50 °C).
Meatotino: Malu, a'afiaga, e le oona, ma le matua.
Talosaga: I totonu o uaea, E masani ona faʻaaogaina le EVA e fai ma sui fetuutuunai poʻo le resini faʻapipiʻi i lalo ole asu Zero Halogen (LSZH), faʻaleleia le faʻaogaina o le mautu ma le fetuutuunai o le faʻaogaina o le faʻaogaina o le siosiomaga ma mea faʻapipiʻi.
(2) Polyethylene-Molecular-Molecular-Weight Polyethylene (UHMWPE)
Faatasi ai ma le mamafa mole mole sili atu i le 1.5 miliona, UHMWPE o se palasitika inisinia pito i luga.
Meatotino: Sili ona tete'e fa'alava i totonu o palasitika, fa'alima taimi sili atu le malosi nai lo le ABS, fa'agata fa'ama'i sili, ma le susū maualalo.
Talosaga: Faʻaaogaina i uaea faʻapitoa ma uaea faʻapitoa e pei o se faʻaofuofu maualuga poʻo le faʻapipiʻiina mo elemene faʻamalosi, faʻaleleia le teteʻe i mea faʻainisinia faʻaleagaina ma abrasion.
III. Fa'ai'uga
Polyolefin mea e leai se halogen, maualalo le asu, ma e le oona pe a mu. Latou te tuʻuina atu le faʻaleleia lelei o le eletise, masini, ma le gaosiga, ma e mafai ona faʻaleleia atili a latou faʻatinoga e ala i le faʻapipiʻiina, faʻafefiloi, ma fesoʻotaʻiga fesoʻotaʻiga.
Faatasi ai ma la latou tuufaatasiga o le saogalemu, faauo i le siosiomaga, ma le faatuatuaina o le faatinoga, o mea polyolefin ua avea ma faiga autu o meafaitino i le uaea faʻaonapo nei ma pisinisi uaea. I le va'ai i luma, a'o fa'atupula'ia vaega e pei o ta'avale malosi fou, photovoltaics, ma feso'ota'iga fa'amaumauga, o fa'afouga i fa'aoga polyolefin o le a fa'ateleina ai le fa'atinoina o le fa'atinoina ma le fa'aauauina o le atina'eina o le cable industry.
Taimi meli: Oke-17-2025