Cufnaanta hoose ee polyetylen (LDPE) waa heerkulbeeg laga sameeyay monomer ethylene.Waxay ahayd fasalka koowaad ee polyetylen, oo ay soo saartay 1933-kii by Imperial Chemical Industries (ICI) iyada oo la adeegsanayo habka cadaadiska sare ee polymerization-ka xorta ah.Soo saaristiisu waxay isticmaashaa hab la mid ah maanta.EPA waxay ku qiyaastay 5.7% LDPE (lambarka dib u warshadaynta 4) dib loo warshadeeyay.Inkasta oo ay jiraan tartan ka imanaya polymers casri ah, LDPE waxay sii ahaanaysaa darajada caaga ah ee muhiimka ah.
PTFEwaa fluorocarbon adag, maadaama ay tahay iskudhis miisaankiisu sarreeyo oo ka kooban kaarboon iyo fluorine.PTFE waa hydrophobic: ma aha biyo ama walxo biyo ku jira ma qoyan PTFE, sida fluorocarbons ay muujiso la dhimay xoogaga fidinta London sababtoo ah kororka sare ee fluorine.PTFE waxay leedahay mid ka mid ah isku-beegyada ugu hooseeya ee is jiid jiid kasta.
Isbarbardhigga LDPE iyo Polymer PTFE/FEP Qiimaha Hantida
Codsiyada Agabka
Polyethylene cufnaanta hoose (LDPE):
LDPE waxaa si weyn loogu isticmaalaa soo saarista weelasha kala duwan, bixinta dhalooyinka, dhalooyinka lagu dhaqo, tubbada, bacaha balaastikada ah qaybaha kombiyuutarada, iyo qalab shaybaar kala duwan la qaabeeyey.Isticmaalkeeda ugu badan waa bacaha balaastiga ah.Alaabooyinka kale ee laga sameeyay waxaa ka mid ah:
- * Saxarada iyo weelasha ujeedooyinka guud
- * Dusha sare ee shaqada ee daxalka u adkaysta
- * Qaybaha u baahan inay noqdaan kuwo alxanka iyo mashiinnada lagu samayn karo
- * Qaybaha u baahan dabacsanaan, taas oo ay si fiican ugu adeegto
- * Qaybo aad u jilicsan oo dabacsan sida daboolka daboolan
- * Lix giraangireed
- Casiirka iyo kartoonada caanaha waxay ka samaysan yihiin looxa baakadaha dareeraha ah, laminaarka xaashida ah iyo LDPE (sida lakabka hoose ee biyuhu aanay biyuhu lahayn), iyo inta badan lakabka aluminium bireed (sidaas darteed waxay noqotaa baakad aseptic).
- * Baakadaha qalabka kombayutarka, sida kuwa Hard Disk-ga ah, kaadhadhka shaashada, iyo diskooga indhaha
- * Sawirro garoonnada lagu ciyaaro
- * Duubista caagga ah
POLYMER PTFE/FEP:Xalalka xargaha, Xargaha aan saliidda lahayn, O-rings, Seals, Capacitors, Semiconductor Production, Qaybaha korantada ee heerkulka sare, Gasket, Qaybaha Valve
Agabka Alaabta:
Polyethylene cufnaanta hoose (LDPE):a;LDPE waxaa lagu qeexaa cufnaanta kala duwan ee 0.910-0.940 g/cm3.Ma falceliyo heerkulka qolka, marka laga reebo walxaha oksaydhaynta ee xooggan, iyo dareerayaasha qaarkood waxay keenaan barar.Waxay u adkeysan kartaa heerkulka 80 °C si joogto ah iyo 95 °C muddo gaaban.Lagu sameeyay kala duwanaansho hufan ama mugdi, waa mid dabacsan oo adag.
b;LDPE waxay leedahay laamo badan (qiyaastii 2% atamka kaarboonka) marka loo eego HDPE, sidaa darteed xoogaggeeda intermolecular (soojiidashada-dipole-ka-soo-jiidashada-dipole-ka-soo-jiidashada) ayaa daciif ah, xooggeeda adkaysiga ayaa hooseeya, adkeysigeeduna wuu sarreeyaa.Sidoo kale, sababtoo ah molecules ay si yar u xirxiran yihiin oo ka yar yihiin crystalline sababtoo ah laamaha dhinaca, cufnaanta ayaa hooseeya.
c;Kiimikada caabbinta: 1, iska caabin heer sare ah (weerar la'aan / fal-celin kiimiko) si loo milo oo loo saaro acids, khamriga, saldhigyada iyo esters; Iska caabin xaddidan (weerar dhexdhexaad ah / falcelin kiimiko ah oo muhiim ah, ku habboon isticmaalka muddada gaaban oo keliya) hydrocarbons alifatic iyo caraf udgoon, saliidaha macdanta, iyo walxaha oksaydhka;
POLYMER PTFE/FEP:Sifooyin dielectric heer sare ah; Firfircoonaan la'aanta kiimikooyinka badankooda; Kulayl sare iyo caabbinta kiimikada
Waqtiga boostada: Nov-10-2019