I-polyethylene yoxinaniso oluphantsi (LDPE) vs Polymer PTFE/FEP Machining

I-polyethylene yoxinaniso oluphantsi (LDPE) yi-thermoplastic eyenziwe kwi-ethylene ye-monomer.Yayiyinqanaba lokuqala le-polyethylene, eveliswe kwi-1933 yi-Imperial Chemical Industries (ICI) isebenzisa inkqubo yoxinzelelo oluphezulu nge-polymerization yamahhala.Ukwenziwa kwayo kusebenzisa indlela efanayo namhlanje.I-EPA iqikelela i-5.7% ye-LDPE (inombolo yokurisayikilishwa yesi-4) iyarisayikilishwa.Ngaphandle kokhuphiswano oluvela kwiipholima zala maxesha, i-LDPE isaqhubeka ukuba libakala elibalulekileyo leplastiki.

PTFEyisiqina se-fluorocarbon, njengoko iyikhompawundi enobunzima obuphezulu bemolekyuli equlathe ngokupheleleyo ikharbhon kunye nefluorine.I-PTFE i-hydrophobic: ayingomanzi okanye izinto eziqulathe amanzi zimanzi i-PTFE, njengoko iifluorocarbons zibonisa amandla okusasazwa eLondon ngenxa ye-electronegativity ephezulu yefluorine.I-PTFE ineyona coefficients isezantsi yokukhuhlana kwayo nayiphi na into eqinileyo.

Ukuthelekiswa kwe-LDPE kunye nePolymer PTFE/FEP amaxabiso ePropati

Ukusetyenziswa kwezinto eziphathekayo

I-polyethylene yoxinano oluphantsi (LDPE):

I-LDPE isetyenziswa kakhulu ukwenza izikhongozeli ezahlukeneyo, iibhotile zokukhupha, iibhotile zokuhlambela, iityhubhu, iingxowa zeplastiki zamalungu ekhompyuter, kunye nezixhobo ezahlukeneyo zaselabhoratri ezibunjiweyo.Ukusetyenziswa kwayo okuqhelekileyo kwiingxowa zeplastiki.Ezinye iimveliso ezenziwe kuyo ziquka:

• • Iitreyi kunye nezikhongozeli zenjongo jikelele
• * Imiphezulu yokusebenza ekwaziyo ukumelana nokudleka
• * Amalungu afuna ukudityaniswa kwaye asetyenziswe
• * Amacandelo afuna ukuguquguquka, apho asebenza kakuhle kakhulu
• * Iindawo ezithambileyo kakhulu nezithambileyo ezifana neziciko ezikhawulezayo
• * Amakhonkco amathandathu
• • Iikhathoni zejusi kunye nobisi zenziwe ngebhodi yokupakisha elulwelo, ilayinithi yephepha kunye ne-LDPE (njengomaleko ongangeni manzi wangaphakathi nangaphandle), kwaye ngokufuthi kunye nomaleko wefoyile yealuminiyam (ngaloo ndlela ibe yipakethe ye-aseptic).
• * Ukupakishwa kwezixhobo zekhompyuter, ezinje ngehard disk drive, amakhadi esikrini, kunye needrive zediski zamehlo
• * Izilayidi zebala lokudlala
• * Izisongelo zeplastiki

IPOLYMER PTFE/FEP:Izisombululo zekhewubhuli;Iibheringi ezingathanjiswanga;Izangqa ze-O;Izitywina;IiCapacitors;Ukwenziwa kweSemiconductor;Amalungu ombane obushushu obuphezulu;Iigesi;amacandelo eValve.

Iinkcazelo ngeempawu zeMathiriyeli:

I-polyethylene yoxinano oluphantsi (LDPE):a;I-LDPE ichazwa ngoluhlu loxinaniso lwe-0.910-0.940 g/cm3.Ayisebenzi kumaqondo obushushu begumbi, ngaphandle kwama-agent anamandla e-oxidizing, kwaye ezinye izinyibilikisi zibangela ukudumba.Iyakwazi ukumelana namaqondo obushushu angama-80 °C ngokuqhubekayo kunye nama-95 °C ixesha elifutshane.Yenziwe ngokuguquguqukayo okanye ukwahluka kwe-opaque, ibhetyebhetye kwaye yomelele.

b;I-LDPE ine-branching eninzi (malunga ne-2% ye-athomu ye-carbon) kune-HDPE, ngoko ke amandla ayo e-intermolecular (instantaneous-dipole induced-dipole attraction) anamandla, amandla ayo aphantsi, kwaye ukomelela kwawo kuphezulu.Kwakhona, ngenxa yokuba iamolekyuli zayo zincinci zipakishwe kwaye zingaphantsi kwekristale ngenxa yamasebe asecaleni, ubuninzi bayo buphantsi.

c;Ukumelana nemichiza: I-1, ukuchasana okugqwesileyo (akukho kuhlaselwa / akukho mpendulo yeekhemikhali) ukudibanisa kunye ne-acidic concentrated, i-alcohols, iziseko kunye ne-esters; i-2, ukuxhathisa okulungileyo (uhlaselo oluncinci / ukuphindaphinda kweekhemikhali eziphantsi kakhulu) kwi-aldehydes, i-ketones kunye neoli yemifuno; Ukuxhathisa okulinganiselweyo (ukuhlaselwa okuphakathi / ukusabela kweekhemikhali okubalulekileyo, okufanelekileyo kusetyenziso lwexesha elifutshane kuphela) kwi-aliphatic kunye ne-aromatics hydrocarbons, i-oyile yamaminerali, kunye ne-oxidizing agents;

IPOLYMER PTFE/FEP:Iipropathi ezigqwesileyo ze-dielectric; Ukungangeni kwiikhemikhali ezininzi; Ubushushu obuphezulu kunye nokumelana neekhemikhali; I-coefffiecient ephantsi kakhulu yokukhuhlana; Ukuchasana nemitha okugqwesileyo; Ukufunxa ukufuma kwe-Zero; Ngokuthelekiswa nokungakhathali kumaxesha ombane;Ubuchule.