Polyethylene yotsika kwambiri (LDPE) vs Polymer PTFE/FEP Machining

Low-density polyethylene (LDPE) ndi thermoplastic yopangidwa kuchokera ku monomer ethylene.Inali kalasi yoyamba ya polyethylene, yopangidwa mu 1933 ndi Imperial Chemical Industries (ICI) pogwiritsa ntchito njira yopondereza kwambiri kudzera pa polymerization yaulere.Kupanga kwake kumagwiritsa ntchito njira yomweyi masiku ano.EPA ikuyerekeza 5.7% ya LDPE (nambala yobwezeretsanso 4) imasinthidwanso.Ngakhale kupikisana ndi ma polima amakono, LDPE ikupitilizabe kukhala kalasi yofunikira ya pulasitiki.

PTFEndi cholimba cha fluorocarbon, chifukwa ndi cholemera kwambiri cha mamolekyulu chomwe chimakhala ndi carbon ndi fluorine.PTFE ndi hydrophobic: palibe madzi kapena zinthu zomwe zili ndi madzi zonyowa PTFE, monga ma fluorocarbons amawonetsa kuchepetsedwa mphamvu zakubalalika kwa London chifukwa champhamvu yamagetsi ya fluorine.PTFE ili ndi imodzi mwama coefficients otsika kwambiri a kukangana kulikonse kolimba.

Kuyerekeza kwa LDPE ndi Polymer PTFE/FEP Katundu Wamtengo

Ntchito Zofunika

Polyethylene yotsika kwambiri (LDPE):

LDPE imagwiritsidwa ntchito kwambiri popanga zotengera zosiyanasiyana, mabotolo operekera, mabotolo ochapira, machubu, matumba apulasitiki azinthu zamakompyuta, ndi zida zosiyanasiyana zama labotale.Nthawi zambiri amagwiritsidwa ntchito m'matumba apulasitiki.Zina zopangidwa kuchokera pamenepo ndi:

• * Ma tray ndi zotengera zanthawi zonse
• * Malo ogwirira ntchito osachita dzimbiri
• * Zigawo zomwe zimafunikira kuwotcherera komanso kusinthika
• * Zigawo zomwe zimafuna kusinthasintha, zomwe zimagwira ntchito bwino kwambiri
• * Zigawo zofewa kwambiri komanso zopindika monga zomangira zotchingira
• * mphete zisanu ndi imodzi
• * Makatoni amadzi ndi amkaka amapangidwa ndi bolodi yoyikapo zamadzimadzi, laminate ya pepala ndi LDPE (monga wosanjikiza madzi mkati ndi kunja), ndipo nthawi zambiri amakhala ndi wosanjikiza wa zojambulazo za aluminiyamu (potero zimakhala zomangira za aseptic).
• * Kuyika kwa zida zamakompyuta, monga ma hard disk drive, makhadi owonekera, ndi ma drive owonera
• * Masewera amasewera
• * Zovala za pulasitiki

POLYMER PTFE/FEP:Cabling mayankho; Non mafuta fani; O-mphete; Zisindikizo; Capacitors; Semiconductor kupanga; High kutentha mbali magetsi; Gaskets; Vavu zigawo.

Katundu:

Polyethylene yotsika kwambiri (LDPE):a;LDPE imatanthauzidwa ndi kachulukidwe osiyanasiyana a 0.910-0.940 g/cm3.Sizochita pa kutentha kwa chipinda, kupatulapo ndi oxidizing amphamvu, ndipo zosungunulira zina zimayambitsa kutupa.Imatha kupirira kutentha kwa 80 °C mosalekeza ndi 95 °C kwakanthawi kochepa.Zopangidwa mosiyanasiyana kapena zowoneka bwino, zimakhala zosinthika komanso zolimba.

b;LDPE ili ndi nthambi zambiri (pafupifupi 2% ya maatomu a carbon) kuposa HDPE, kotero mphamvu zake za intermolecular (instantaneous-dipole induced-dipole attraction) zimakhala zofooka, mphamvu zake zokhazikika zimakhala zotsika, ndipo kupirira kwake kumakhala kwakukulu.Komanso, chifukwa mamolekyu ake sakhala odzaza kwambiri komanso osawoneka bwino chifukwa cha nthambi zam'mbali, kachulukidwe kake ndi kocheperako.

c;Kukana kwa Chemical: 1, Kukana Kwabwino (palibe kuukira / kusachitapo kanthu) kusungunula ndi kuyika ma acid, ma alcohols, maziko ndi esters; 2, Kukana bwino (kuukira kochepa / kutsika kwambiri kwamankhwala) ku aldehydes, ketoni ndi mafuta a masamba; Kukaniza pang'ono (kuukira kocheperako / kuchitapo kanthu kwakukulu kwamankhwala, koyenera kugwiritsidwa ntchito kwakanthawi kochepa) kwa ma aliphatic ndi onunkhira ma hydrocarbons, mafuta amchere, ndi ma oxidizing agents; 4,Kukana koyipa, komanso osavomerezeka kuti agwiritsidwe ntchito ndi ma halogenated hydrocarbon.

POLYMER PTFE/FEP:Zinthu zabwino kwambiri za dielectric; Kusakhazikika kwamankhwala ambiri; Kutentha kwakukulu ndi kukana kwamankhwala; Coeffiecient yotsika kwambiri ya mikangano; Kukaniza bwino kwa ma radiation; mayamwidwe a zero; Kusamva mphamvu pafupipafupi; Kuchita bwino.