Yakaderera-density polyethylene (LDPE) vs Polymer PTFE/FEP Machining

Low-density polyethylene (LDPE) ndeye thermoplastic yakagadzirwa kubva kumonomer ethylene.Yakanga iri giredhi rekutanga re polyethylene, rakagadzirwa muna 1933 neImperial Chemical Industries (ICI) vachishandisa yakakwira kudzvanywa maitiro kuburikidza nemahara radical polymerization.Kugadzirwa kwayo kunoshandisa nzira imwe chete nhasi.EPA inofungidzira 5.7% yeLDPE (nhamba yekudzokorora nhamba 4) inoshandiswa patsva.Kunyangwe kukwikwidza kubva kune mamwe mazuvano mapolymers, LDPE inoramba iri yakakosha giredhi repurasitiki.

PTFEis fluorocarbon solid, sezvo iri high-molecular-weight compound inoumbwa nekabhoni nefluorine.PTFE is hydrophobic: hapana mvura kana zvinhu zvine mvura zvakanyorova PTFE, semafluorocarbons anoratidza kudzikiswa kweLondon dispersion forces nekuda kwekukwirira kwemagetsi kwefluorine.PTFE ine imwe yakaderera coefficients yekukwesha kwechero yakasimba.

Kuenzanisa kweLDPE uye Polymer PTFE/FEP Property Values

Material Applications

Low-density polyethylene (LDPE):

LDPE inoshandiswa zvakanyanya kugadzira midziyo yakasiyana-siyana, mabhodhoro ekuparadzira, mabhodhoro ekugezesa, tubing, mabhegi epurasitiki ezvikamu zvekombuta, uye akasiyana akaumbwa midziyo yerabhoritari.Kunyanya kushandiswa kwayo kuri mumabhegi epurasitiki.Zvimwe zvinogadzirwa kubva mairi zvinosanganisira:

• * Matireyi uye zvakajairwa chinangwa midziyo
• * Nzvimbo dzebasa dzisingadziviriri
• * Zvikamu zvinoda simbi uye zvinogoneka
• * Zvikamu zvinoda kuchinjika, izvo zvinoshanda zvakanyanya
• * Zvikamu zvakapfava uye zvinobatika senge snap-on lids
• * Zvindori zvitanhatu
• *Makatoni emuto nemakatoni emukaka anogadzirwa nebhodhi rekurongedza remvura, laminate yepepabhodhi uye LDPE (seyemukati uye yekunze dhizaini), uye kazhinji ine chidimbu chealuminium foil (saka ichiva aseptic packaging).
• * Kurongedza kwehardware yekombuta, senge hard disk dhiraivha, skrini makadhi, uye optical disc dhiraivha
• * Nzvimbo yekutamba masiraidhi
• * Zviputi zvepurasitiki

POLYMER PTFE/FEP:Cabling mhinduro; Mabhengi asina kuzorwa; O-mhete; Zvisimbiso; Capacitors; Semiconductor kugadzira; Tembiricha yepamusoro yemagetsi zvikamu; Gaskets; Valve components.

Material Properties:

Low-density polyethylene (LDPE):a;LDPE inotsanangurwa nehuwandu hwehuwandu hwe0.910-0.940 g/cm3.Haisi reactive pane tembiricha yemumba, kunze kwekunge yakasimba oxidizing agents, uye zvimwe zvinonyungudutsa zvinokonzera kuzvimba.Inogona kumira tembiricha ye80 °C nguva dzose uye 95 °C kwenguva pfupi.Yakagadzirwa mu translucent kana opaque misiyano, inoshanduka uye yakaoma.

b;LDPE ine mamwe mapazi (painenge 2% yemaatomu ekabhoni) kupfuura HDPE, saka masimba ayo epakati (pakarepo-dipole induced-dipole attraction) haana simba, simba rayo rekusimba rakaderera, uye kusimba kwayo kwakakwira.Zvakare, nekuti mamorekuru ayo haanyanyi kurongedzerwa uye kushoma crystalline nekuda kwematavi eparutivi, kuwanda kwayo kwakadzikira.

c;Kemikari kuramba: 1, Yakanakisa kuramba (hapana kurwiswa / hapana kemikari inoita) kudzikisa uye kunyura acids, doro, mabhesi uye esters; 2, Kuramba kwakanaka (kurwiswa kudiki / kuderera kwemakemikari reactivity) kune aldehydes, ketoni nemafuta emiriwo; Kuramba kushoma (zvine mwero kurwisa / yakakosha kemikari kuita, inokodzera kushandiswa kwenguva pfupi chete) kune aliphatic uye inonhuhwirira hydrocarbons, mineral oiri, uye oxidizing agents;4,Kupokana kushomeka, uye isingakurudzirwe kushandiswa nehalogenated hydrocarbons.

POLYMER PTFE/FEP:Yakanakisa dielectric zvivakwa; Kusagadzikana kune akawanda makemikari; Kupisa kwakanyanya uye makemikari kuramba; Yakanyanya kuderera coeffiecient yekukweshana; Yakanakisa nemwaranzi kuramba; Zero mwando kutorwa; Zvishoma kusanzwa kune simba frequency; Machinability.