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Polyethylene maualalo (LDPE) vs Polymer PTFE/FEP Masini

Low-density polyethylene (LDPE) o se mea fa'avelavela mai le monomer ethylene.O le vasega muamua lea o le polyethylene, na gaosia i le 1933 e Imperial Chemical Industries (ICI) e faʻaaogaina ai le faʻaogaina o le mamafa maualuga e ala i le polymerization radical free.O lona gaosiga o loʻo faʻaaogaina le auala lava e tasi i aso nei.Ole EPA fa'atatau ile 5.7% ole LDPE (recycle numera 4) o lo'o toe fa'aaogaina.E ui i le tauvaga mai polymers fa'aonaponei, o lo'o fa'aauau pea ona avea le LDPE ma se togi palasitika taua.

PTFEose fluorocarbon malo, ona o se tuufaatasiga maualuga-mole-mamafa e aofia atoa ai le kaponi ma le fluorine.O le PTFE e hydrophobic: e leai se vai po'o ni mea e iai vai susu PTFE, e pei ona fa'aalia e fluorocarbons le fa'aitiitia o malosiaga ta'ape a Lonetona ona o le maualuga o le electronegativity o le fluorine.O le PTFE o loʻo i ai se tasi o mea sili ona maualalo o feteʻenaʻiga o soʻo se malo.

polyethylene maualalo-tele

Fa'atusatusaga o LDPE ma Polymer PTFE/FEP Tau Meatotino

polyethylene maualalo-tele

Talosaga Mea

polyethylene maualalo (LDPE):

LDPE o lo'o fa'aaogaina lautele mo le gaosiga o koneteina eseese, tu'uina atu fagu, fagu fufulu, paipa, taga palasitika mo vaega komepiuta, ma masini su'esu'e eseese.O lona fa'aoga masani o totonu o taga palasitika.O isi oloa na faia mai ai e aofia ai:

  • * Fata ma koneteina masani
  • * Laupapa galue e mafai ona pala
  • * Vaega e manaʻomia ona uelo ma masini
  • * Vaega e manaʻomia le fetuutuunaʻi, lea e aoga tele
  • * O vaega vaivai tele ma ma'ale'ale e pei o tapuni tapuni
  • * Six pack mama
  • * O pusa suasusu ma susu e fai i laupapa afifi vai, o se laminate o pepa pepa ma le LDPE (e pei o le susu i totonu ma fafo), ma e masani ona i ai se apa alumini pepa (e avea ma mea e teu ai aseptiki).
  • * Fa'apipi'i mo mea fa'akomepiuta, e pei o ti'eti'e mālosi, kata mata, ma ti'eti'e tisiketi
  • * Fa'ase'e o le malae ta'alo
  • * Afifi palasitika

POLYMER PTFE/FEP:Fofo fa'apipi'i; Fa'amau e le fa'alumaina; O-mama; Fa'amaufa'ailoga; Capacitors; Fausiaina Semiconductor; Vaega eletise vevela maualuga; Gaskets; Valve vaega.

Meatotino Meatotino:

polyethylene maualalo (LDPE):a;O le LDPE o lo'o fa'amatalaina i se va'aiga tele o le 0.910-0.940 g/cm3.E le gaoioi i le vevela o le potu, se'i vagana ai ni mea fa'ama'i malosi, ma o nisi solvents e mafua ai le fula.E mafai ona tatalia le vevela o le 80 °C faifai pea ma le 95 °C mo sina taimi puupuu.Faia i le translucent po'o le opaque fesuiaiga, e fai si fetuutuunai ma faigata.

e;O le LDPE e sili atu ona lala (pe a ma le 2% o le carbon atoms) nai lo le HDPE, o lona uiga o ona malosiaga intermolecular (fa'atosina-dipole fa'aoso-dipole tosina) e vaivai, o lona malosi tensile e maualalo, ma lona maufetuuna'i e maualuga atu.E le gata i lea, talu ai ona o ona molelaʻau e itiiti le faʻapipiʻiina ma itiiti le tioata ona o lala o itu, o lona mamafa e maualalo.

c;Tete'e vaila'au: 1, Tete'e sili (leai se osofa'iga / leai se fa'a'a'ai) e fa'afefeteina ma fa'atumauina ni vaila'au, 'ava malosi, fa'avae ma esters; 2, Lelei le tetee (osofaiga la'ititi / fa'ato'a maualalo fa'ainisinia) i aldehydes, ketones ma suau'u fuala'au;3, Fa'atapula'a fa'agata (osofaiga feololo / taua fa'a'a'ai fa'ama'i, talafeagai mo na'o le fa'aoga pupuu) i aliphatic ma aromatic hydrocarbons, suau'u minerale, ma oxidizing agents; 4, Le lelei tete'e, ma e le fautuaina mo le fa'aoga i le hydrocarbons halogenated.

POLYMER PTFE/FEP:Lelei tele mea fa'a-dielectric; Inertness i le tele o vaila'au; maualuga le vevela ma kemikolo tetee; matua maualalo coefficient o fete'ena'iga; sili ona tetee i le radiation; leai se susū absorption; fai lava si le maaleale i le tele o le eletise; machinability.

Taimi meli: Nov-10-2019