Izinto ze-PVC ne-silicone zinezinzuzo eziningi ezihlukene enqubweni yokukhiqiza, ikakhulukazi ekuphileni kwethu kwansuku zonke. Ngaphezu kwalokho, izimboni ezahlukene nazo zinezidingo ezahlukene zokukhetha izinto zokwakha. Kuphela ngokuqonda kabanzi imvelo kanye nokwehluka kwemikhiqizo singakwazi ukwenza ukukhetha okungcono. Namuhla, ngosizo lwalesi sihloko, ake sisondele emhlabeni wabo futhi sihlole umehluko wabo.
Ukwethulwa kwerabha ye-pvc
Ifomu le-PVC liyimpushana emhlophe futhi isakhiwo asiqinisekile. Ukuminyana kwayo okuhlobene kucishe kube ngu-1.4. Ingenziwa i-vitrified kuphela lapho izinga lokushisa lifinyelela ku-77 ~ 90 ℃, futhi ingabola kuphela lapho izinga lokushisa lifinyelela cishe ku-170 ℃. I-PVC ayizinzi kahle ekukhanyeni nasekushiseni. Isibonelo, lapho izinga lokushisa lifinyelela ngaphezu kuka-100 ℃ noma lichayeka elangeni isikhathi eside, lizobola likhiqize i-hydrogen chloride. Uma iqhubeka ngaphansi kwalesi simo, izophinde ibangele futhi ibole, okuholela ekushintsheni kombala.
Ngesikhathi esifanayo, izakhiwo zayo ezingokomzimba nezomshini nazo zizokwehla. Ngenxa yalesi sici, ngokuvamile sidinga ukungeza inani elithile lokuzinzisa ekusebenzeni kwangempela nokusetshenziswa ukuze siqinisekise ukuthi singasebenza ngokujwayelekile ngaphansi kwezimo zokukhanya nokushisa. Ezimbonini ezijwayelekile zezimboni, isisindo samangqamuzana se-PVC sivame ukuba phakathi kuka-50000 ~ 110000, futhi i-polydispersity yamangqamuzana inamandla, kodwa i-polymerization yamangqamuzana izokhula kancane kancane ngokuncipha kwezinga lokushisa; Ngenxa yezici zayo zamangqamuzana ezingazinzile, i-PVC ayinayo indawo encibilikayo engaguquki. Ngokuvamile iqala ukuthamba ku-80 ~ 85 ℃, kodwa lapho izinga lokushisa lifinyelela ku-130 ℃, izoba yisimo se-viscoelastic.
Lapho izinga lokushisa lifinyelela ku-160 ~ 180 ℃, lizoqala ukushintsha libe yisimo sokugeleza kwe-viscous; I-PVC inezinto ezinhle zomshini, ezinamandla aqinile acishe abe ngu-60MPa namandla okuthonya angu-5 ~ 10kj/m2; Ibuye ibe nezindawo ezinhle ze-dielectric. I-PVC yayijwayele ukuba yipulasitiki enkulu kunazo zonke emhlabeni, ngakho-ke inezinhlobonhlobo zezinhlelo zokusebenza. Ububanzi besicelo buhlanganisa: izinto zokwakha, imikhiqizo yezimboni, izidingo zansuku zonke, isikhumba saphansi, amathayela aphansi, isikhumba sokwenziwa, amapayipi, izintambo nezintambo, ifilimu yokupakisha, amabhodlela, izinto ezigwebu, izinto zokuvala, imicu, njll.
Ukwethulwa kwerabha ye-silicone
I-silicon dioxide iyisici esiyinhloko se-silicon dioxide. I-Silicone iyi-polymer eyenziwe nge-silicon nomoya-mpilo. I-silicon iyisici semvelo esingeyesibili ngobuningi emhlabeni, ngemva kwe-oxygen. I-silicon ayenzeki ngokwemvelo njenge-polymer; kufanele ihlanganiswe nezinye izakhi ukuze kwakhiwe ama-polymers. I-Silicone inezinhlelo zokusebenza eziningi, kokubili izimboni kanye nabathengi. I-PVC iyinto esetshenziselwe ukwakhiwa amashumi eminyaka, kuyilapho i-silicone iyinto entsha ebilokhu ithandwa kakhulu.
Ifomula yamakhemikhali ye-silicone ithi xsio2 · yh2o, eyizinhlayiya eziqinile ezimhlophe ezibonisa ngale noma ezimhlophe. Imodeli yokusetshenziswa inesakhiwo esinezimbotshana ezivulekile namandla okukhangisa aqinile ezinto ezahlukahlukene. I-Dilute sulfuric acid (noma i-hydrochloric acid) yengezwa kwisisombululo samanzi sengilazi yamanzi ukuze iqiniswe, ukuze kwakhiwe i-silica gel amanzi aqinile. Ijeli ye-silica ingatholakala ngokususa i-Na + ne-SO42 – (CL) ions ku-electrolyte ngokuwasha amanzi. Njenge-agent ye-hygroscopic, izinga le-hygroscopic yejeli ye-silica cishe i-40%, noma i-300%. Isetshenziselwa ukomisa igesi, ukumuncwa kwegesi, i-chromatography ewuketshezi, njll. ingasetshenziswa futhi njenge-catalyst. Uma i-cobalt chloride yengezwa, amanzi aluhlaza okwesibhakabhaka nabomvu azomuncwa ngemva kokumiswa. ukugaywa kabusha.
Uyini Umehluko phakathi kwe-PVC ne-Silicone?
Ukuqhathanisa okuvamile:
- Imikhiqizo ye-PVC yenziwe nge-PVC, i-petroleum nokunamathisela umbala. Izinto zokusetshenziswa ziyashisisa futhi zipholiswe ngenqubo yokubumba umjovo omncane. Ijeli ye-silica, esebenzisa kuphela izingxenye zamakhemikhali ezifana nejeli ye-silica kanye ne-masterbatch yombala, ifakwa esikhunjeni ngomshini we-raber calendering nomshini wokucwenga, bese ifudunyezwa futhi ipholiswe ukucindezela kukawoyela.
- Mayelana nokubukeka, imikhiqizo ye-PVC iqinile kunemikhiqizo ye-silicon, enobuso obushelelezi nombala ogqamile.
- Ngokusho kokwahlulela okuthintekayo, imikhiqizo yejeli ye-silica ithambile, inokuqina okuhle nokunwebeka. I-PVC ithambile futhi iqinile uma kuqhathaniswa, ithambile futhi iqinile, iyalungiseka kodwa ayiqinile i-PVC.
- I-PVC iyinto evamile yokuvikela imvelo, eyaziwa nangokuthi i-atbc-pvc. Ijeli ye-silica ingaphasa isitifiketi se-ROHS futhi ivumelana nemvelo.
- Imikhiqizo ye-silicone ngokuvamile ibonakala futhi inephunga elincane elivuthayo. Imikhiqizo isesimweni sempushana. Imikhiqizo yepulasitiki izokhiqiza umnyama ngemva kokushiswa, futhi iphunga elivuthayo alijabulisi.
- Imikhiqizo yejeli ye-silica inokushisa okuphezulu nokumelana nokubanda emikhiqizweni ye-PVC. Imikhiqizo yejeli ye-silica ingashiswa kuhhavini we-microwave, kuyilapho imikhiqizo ye-PVC ingakwazi.
Futhi kukhona imininingwane ethile yokuqhathanisa:
Amandla: I-PVC inamandla kune-silicone, okwenza kube ukukhetha okuhle ezinhlelweni ezidinga ukuqina.
Ukumelana Nokushisa: I-silicone imelana kakhulu nokushisa okuphezulu kune-PVC, okuyenza ibe ukukhetha okungcono kwezinhlelo zokusebenza ezidinga ukumelana nokushisa.
Ukuvumelana nezimo: I-PVC iguquguquka kakhulu kune-silicone, okwenza kube ukukhetha okungcono kwezinhlelo zokusebenza ezidinga ukunyakaza.
Ukungafihli: I-PVC ayibonisi ngale kune-silicone, okuyenza ibe ukukhetha okungcono ezinhlelweni ezidinga ukubonakala.
Izindleko: I-PVC ibiza kancane kune-silicone, okwenza kube ukukhetha okungcono kokuqaphela ibhajethi.
-Cabanga ngokuthi uyisebenzisela ini indaba. Uma ufuna okuthile ongakusebenzisa ngaphandle, uzodinga okuthile okungamelana nezakhi.
-Cabangela ibhajethi yakho. Ezinye izinto zibiza kakhulu kunezinye.
-Cabanga ukuthi singakanani isikhathi ofuna ukusichitha kuphrojekthi. Ezinye izinto kulula ukusebenza ngazo kunezinye.
-Bheka izinketho ezahlukene ezitholakalayo. Kunezinhlobo eziningi zezinto ongakhetha kuzo, ngakho-ke thatha isikhathi sakho uthole leyo ekulungele kakhulu.
Isiphetho:
Kunomehluko omkhulu phakathi kwe-PVC nerabha ye-silicone. Okungenhla umehluko omkhulu. Ziningi umehluko. Ukukhethwa kwezinto ezithile kudinga ukuthi sikhethe ngokwezinhlobo zemikhiqizo yethu. Ngenxa yokuthi imikhiqizo ehlukene inokusebenza okuhlukile ezintweni ezingavuthiwe, ikakhulukazi kwezinye izimboni, ukucaciswa kwezinto ezibonakalayo nakho kudinga ukucatshangelwa ngokucophelela ngaphambi kokukhethwa.Isiphetho: I-PVC ne-silicone inobuhle nebubi obuhlukile, ngakho-ke kubalulekile ukucabangela lokho okudingayo ngaphambi kokunquma. yiluphi uhlobo lwepulasitiki olulungele isicelo sakho.
Ngaphezu kwalokho, uma kuqhathaniswa nezinye izinto ze-polymer, i-PVC inezinzuzo zamanani aphansi, umthombo obanzi wezinto zokusetshenziswa, inqubo yokukhiqiza elula, ukufakwa kwe-insulation kanye ne-flame retardant. Ngesikhathi esifanayo, imodeli yokusetshenziswa ingaphinda isetshenziswe futhi ibe nomthelela wokukhucululwa kwendle nokuvikelwa kwemvelo. Kodwa uma udinga ishubhu yebanga lokudla izinto zokwakha, ijeli ye-silica ilula kakhulu. Ukukhetha abahlinzeki abafanelekile nabasezingeni eliphezulu ngokungangabazeki kuyisinqumo esibalulekile sanoma iyiphi inkampani. I-Bai-OTT ingakunikeza imikhiqizo namasevisi amabili aqinisekisa ikhwalithi, angahlangabezana nezidingo zakho. Ngemuva kwezifiso zethu, wamukelekile ukuthi usithinte.
