Iyini i-Chlorinated Polyethylene (cpe) futhi Isetshenziswa kuphi?
I-Argonated polyethylene cpe low density polyethylene 2 i-silicone ye-rubber blend cable insulation material i-low density polyethylene (LDPE) kanye ne-polydimethylsiloxane ehambisana ne-ethyl methacrylate (EMA) (PDMS) eyingxube yerabha iyindlela ephumelelayo yokuvala ukushisa kwekhebula. Izakhiwo ezihlukahlukene zikagesi, izakhiwo zemishini kanye nezakhiwo ezishisayo zenhlanganisela zafundwa. Imiphumela ikhombisa ukuthi inhlanganisela ingasetshenziswa njenge-Thermal insulation material, uma iqhathaniswa ne-silicone yerabha, inokusebenza okungcono kwezindleko.
Sekuyisikhathi eside abantu bebheka irabha ye-silicone njengenjoloba ekhethekile yezintambo ezinhlobonhlobo zamazinga okushisa aphezulu naphansi. Kodwa-ke, intengo ebizayo yerabha ye-silicone ikhawulela ububanzi bokusebenza kwayo.
I-LDPE iyipulasitiki enesamba esikhulu kunazo zonke embonini. Inezindleko eziphansi kanye nezakhiwo zikagesi ezinhle kakhulu, ngakho-ke isetshenziswa kabanzi njenge-polymer evikelayo ezintanjeni nasezintanjeni zamandla aphakathi naphansi. I-LDPE ayigcini nje ngezindleko eziphansi kodwa futhi i-Dielectric engaguquki kanye nesici sokulahlekelwa uma kuqhathaniswa, ukumelana okuphezulu, kanye nezakhiwo ezinhle kakhulu zemishini ezingaphansi kwezinga lokushisa elizungezile elingu-90C, ngakho-ke iningi lamarabha okwenziwa, njengerabha ye-styrene-butadiene (SBR), irabha ye-butyl (IR). ), i-neoprene(CR) nokunye balahlekelwe ingxenye yesabelo semakethe. Uma kuqhathaniswa ne-silicone ye-rubber insulation material, inhlanganisela ye-polydimethylsiloxane (PDMS) ne-LDPE inenzuzo yezindleko eziphansi ukuze kuhlangatshezwane namamaki ahlukahlukene, Ngaphezu kwezidingo ezikhethekile zezintambo zokudlulisa amandla, ukulawula kanye nezinsimbi, abantu baye bathuthukisa ngokuqhubekayo. izinto ezintsha zokufakelwa kwe-polymer ehlukahlukene. Kodwa-ke, izakhiwo zemishini kanye nokumelana nokushisa kwe-low-voltage kagesi izinto (<10kV) ziphakeme kune
Izakhiwo zikagesi zibaluleke kakhulu.
Ngokwesibonelo; ungqimba lwe-cable insulation yesithando somlilo kufanele lube nokuzinza okuhle kwezakhiwo zemishini ekushiseni okuphezulu. Ngokufanayo; izidingo zezintambo ezingabhemi kancane, ezimelana nowoyela, nezingashisi amalangabi nazo zihlukile. Ngakho ikhebula kufanele Isikhathi sokufaka isicelo sinquma izidingo zokusebenza okukhethekile kwekhebula. Ukuwohloka kwe-oxidative kwerabha kanye nokwakheka kwengqimba ye-oxide ebusweni kuzokwandisa ukuqhutshwa kwe-conductivity, ngoba ngemva kokuba i-rubber i-oxidized, i-polarity ikhiqizwa phakathi kwe-carbon black aggregates.
Amaqembu (afana ne-carboxyl) Lawa maqembu ahlinzeka ngendlela emfushane yama-electron. Kunezici ezimbalwa okufanele zicatshangelwe lapho ukhetha umsebenzi wohlelo lokusebenza. Mayelana nokufakwa kwamakhebula; ipharamitha ebalulekile yayo Imikhawulo ikhono lamanje ukudlula ungqimba lokufakwa. Ngokwamanje okuqondile (dc), kusobala ukuthi ukusetshenziswa kwezinto ezimelana kakhulu kunganciphisa ukushuba kwesendlalelo se-insulation; kokushintshana kwamanje (ac), imvume ehlobene nokulahlekelwa kuphansi kakhulu.
I-dissipation factor ibuye inciphise ukushuba kokufakwa.
I-Ethyl methacrylate (EMA) ingathathelwa indawo kakhulu irabha ye-silicone njengento efakwa ngaphakathi kusetshenziswa imixube ye-PDMS yezakhiwo ezihlukahlukene zikagesi, izakhiwo zemishini kanye nokumelana nokushisa.
Ukusebenza kwenani elifanayo njengesihlanganisi sokuhlangana kwe-LDPE ne-PDMSA (50:50).
1. Uhlelo lokuvikela oluzinzile, i-CPE izokhipha i-hydrogen chloride uma ishisisiwe noma ivuvukala, ngakho-ke iziqinisi ezinomphumela wokumunca i-asidi kufanele zisetshenziswe kufomula, njenge-calcium stearate, i-barium stearate, i-tribasic lead sulfate noma i-magnesium oxide.
2. Uhlelo lwe-Plasticizing. Ama-plasticizer e-Ester avame ukusetshenziswa ku-CPEZ, njenge-dioctyl phthalate (DOP) ne-dioctyl adipate (DOA). Imingcele yawo ye-solubility iseduze naleyo ye-CM. Umthamo omuhle. Ukusetshenziswa kwe-DOA ne-DOS ku-rubber kunganikeza irabha ukumelana okuhle kakhulu nokubanda.
3. Uhlelo lwe-vulcanization lwe-CPE, i-CPE iyirabha egcwele, futhi uhlelo oluvamile lwe-sulfur vulcanization alukwazi ukulivuza ngokuphumelelayo. Ukuqala kokusetshenziswa kwesistimu ye-CPE vulcanization uhlelo lwe-thiourea, olusebenza kahle kakhulu okuyi-Na-22, kodwa i-Na-22 inejubane eliphansi le-vulcanization, ukusebenza kabi kokuguga, isethi yokucindezela okuphezulu, futhi i-Na-22 iyi-carcinogen eyingozi. Ikhiqiza iphunga elibi, futhi ukusetshenziswa kwayo kuvinjelwe phesheya.
4. Ukuqinisa uhlelo lokugcwalisa, i-CPE iwuhlobo lwenjoloba engenzi-self-reinforcing, oludinga uhlelo lokuqinisa ukuze kuzuzwe amandla angcono. Uhlelo lwayo lokugcwalisa oluqinisayo lufana nalolo lokunamathisela okuhloswe ngokujwayelekile. I-ejenti eqinisayo ikakhulukazi i-carbon black and white carbon black. Ikhabhoni emnyama emnyama ingathuthukisa ukumelana nezinyembezi kwe-CPE, futhi ingakha isistimu emhlophe ye-metamethyl ukuthuthukisa ukunamathela phakathi kwe-CPE nohlaka lwamathambo. hlanganisa. I-CPE inendawo yokugcwalisa ephezulu, futhi uhlelo lokugcwalisa ikakhulukazi luhlanganisa i-calcium carbonate, i-talcum powder, ubumba, njll.
Isikhathi sokuthumela: Jan-05-2023
