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Umahluko phakathi kwePVC kunye neSilicone

Izinto ze-PVC kunye ne-silicone zineenzuzo ezininzi ezahlukeneyo kwinkqubo yokuvelisa, ngakumbi kubomi bethu bemihla ngemihla. Ngaphezu koko, amashishini ahlukeneyo aneemfuno ezahlukeneyo zokukhethwa kwezinto. Kuphela ngokuqonda ngokubanzi ubume kunye nomahluko weemveliso esinokuthi senze ukhetho olungcono. Namhlanje, ngoncedo lweli nqaku, masisondele kwihlabathi labo kwaye siphonononge umahluko wabo.

Ukuqaliswa kwerabha yepvc

Uhlobo lwePVC ngumgubo omhlophe kwaye isakhiwo asiqinisekanga. Ukuxinana kwayo kumalunga ne-1.4. Inokuthi ifakwe i-vitrified kuphela xa ubushushu bufikelela kuma-77 ~ 90 ℃, kwaye inokubola kuphela xa ubushushu bufikelela malunga ne-170 ℃. I-PVC inozinzo olulambathayo ekukhanyeni nasekufudumeni. Umzekelo, xa iqondo lobushushu lifikelela ngaphezu kwe-100 ℃ okanye libekwe elangeni ixesha elide, liya kubola livelise ihydrogen chloride. Ukuba iyaqhubeka phantsi kwalo mqathango, iya kuqhubela phambili i-catalyze kwaye ibole, ibangele ukuguquka kombala.

Ngexesha elifanayo, iimpawu zayo zomzimba kunye noomatshini nazo ziya kuncipha. Ngenxa yolu phawu, sidla ngokufuna ukongeza inani elithile lokuzinzisa ekusebenzeni kwangempela kunye nokusetyenziswa ukuqinisekisa ukuba inokusebenza ngokuqhelekileyo phantsi kweemeko zokukhanya kunye nobushushu. Kumashishini amashishini ngokubanzi, ubunzima be-molecular ye-PVC buhlala buphakathi kwe-50000 ~ 110000, kwaye i-polydispersity ye-molecular yomelele, kodwa i-polymerization ye-molecular iya kwanda ngokuthe ngcembe ngokuhla kweqondo lokushisa; Ngenxa yeempawu zayo ezingazinzanga ze-molekyuli, i-PVC ayinayo indawo yokunyibilika esisigxina. Ngokuqhelekileyo iqala ukuthamba kwi-80 ~ 85 ℃, kodwa xa ubushushu bufikelela kwi-130 ℃, iya kuba yimeko ye-viscoelastic.

Xa ubushushu bufikelela kwi-160 ~ 180 ℃, iyakuqala ukutshintsha ibe yimo yokuqukuqela kwe-viscous; I-PVC ineempawu ezilungileyo zoomatshini, ezinamandla okuqina malunga ne-60MPa kunye namandla empembelelo ye-5 ~ 10kj / m2; Kwakhona ineempawu ezilungileyo ze-dielectric. I-PVC yayiyeyona njongo inkulu yeplastiki yehlabathi, ngoko inoluhlu olubanzi lwezicelo. Umda wesicelo uquka: izinto zokwakha, iimveliso zoshishino, iimfuno zemihla ngemihla, isikhumba somgangatho, iileyile zomgangatho, isikhumba sokwenziwa, iipayipi, iingcingo kunye neentambo, ifilimu yokupakisha, iibhotile, izinto ezikhupha amagwebu, izinto zokutywina, iifayili, njl.

Ukuqaliswa kwerabha ye-silicone

I-silicon dioxide yeyona nto iphambili ye-silicon dioxide. I-Silicone yipolymer eyenziwe nge-silicon kunye ne-oxygen. I-silicon yinto yendalo eyesibini ngobuninzi emhlabeni, emva kweoksijini. I-silicon ayenzeki ngokwemvelo njengepolymer; kufuneka idityaniswe nezinye izinto ukwenza iipholima. I-Silicone inezicelo ezininzi, zombini ishishini kunye nabathengi. I-PVC yinto esetyenzisiweyo ekwakheni amashumi eminyaka, ngelixa i-silicone iyinto entsha efunyenwe ekuthandeni.

I-chemical formula ye-silicone yi-xsio2 · yh2o, ecacileyo okanye amaqhekeza amhlophe amhlophe amhlophe. Imodeli eluncedo inesakhiwo esivulekileyo se-porous kunye ne-adsorption eyomeleleyo yezinto ezahlukeneyo. I-Dilute sulfuric acid (okanye i-hydrochloric acid) yongezwa kwisisombululo esinamanzi samanzi eglasi ukuze izinze, ukuze yenze i-silica gel amanzi aqinileyo. I-gel ye-silica inokufumaneka ngokususa i-Na + kunye ne-SO42 - (CL) i-ion kwi-electrolyte ngokuhlamba kwamanzi. Njenge-agent ye-hygroscopic, izinga le-hygroscopic ye-silica gel imalunga ne-40%, okanye i-300%. Isetyenziselwa ukomisa igesi, ukufunxwa kwerhasi, ulwelo lwechromatography, njl njl. Ukuba i-cobalt chloride yongezwa, amanzi aluhlaza kunye nabomvu aya kuxutywa emva kokumisa. ukurisayikilishwa.

Nguwuphi umahluko phakathi kwePVC kunye neSilicone?

Uthelekiso ngokubanzi:

  1. Iimveliso zePVC zenziwe ngePVC, i-petroleum kunye nokuncamathisela kombala. Izinto eziluhlaza ziyafudunyezwa kwaye zipholile ngenkqubo yokubumba inaliti encinci. Ijeli ye-silica, esebenzisa kuphela amacandelo ekhemikhali afana nejeli yesilica kunye ne-masterbatch yombala, ifakwa kubumba ngerabha ye-calendering kunye nomatshini wokucokisa, emva koko ifudunyezwe kwaye ipholiswe luxinzelelo lweoyile.
  2. Ngokwembonakalo, iimveliso zePVC zirhabaxa kuneemveliso zesilicon, ezinomgangatho ogudileyo kunye nombala oqaqambileyo.
  3. Ngokwesigwebo esibambekayo, iimveliso zejeli ye-silica zithambile, zinokuqina okuhle kunye nokuqina. I-PVC ithambile kwaye ilukhuni ngokwentelekiso, zombini ithambile kwaye ilukhuni, iyahlengahlengiswa kodwa ayinzima iPVC.
  4. I-PVC yinto eqhelekileyo yokukhusela indalo, eyaziwa ngokuba yi-atbc-pvc. Ijeli yeSilica inokupasa isatifikethi se-ROHS kwaye ihambelana nokusingqongileyo.
  5. Iimveliso ze-silicone ngokubanzi ziyabonakala kwaye zinevumba elincinci lokutshisa. Iimveliso zikwimilo engumgubo. Iimveliso zeplastiki ziya kuvelisa umnyama emva kokutshisa, kwaye iphunga elivuthayo alikho mnandi.
  6. Iimveliso zejeli yesilika zinobushushu obuphezulu kunye nokumelana nokubanda kwiimveliso zePVC. Iimveliso ze-silica zejeli zinokufudunyezwa kwi-oven microwave, ngelixa iimveliso ze-PVC zingenako.

Kwaye kukho ezinye iinkcukacha ezithile uthelekiso:

Amandla: I-PVC yomelele kune-silicone, iyenza ibe lukhetho oluhle kwizicelo ezifuna ukuqina.

Ukumelana nobushushu: i-silicone iyaxhathisa kubushushu obuphezulu kunePVC, iyenza ibe lukhetho olungcono kwizicelo ezifuna ukumelana nobushushu.

Ukuguquguquka: I-PVC iguquguquka ngakumbi kune-silicone, iyenza ibe yinto engcono kakhulu kwizicelo ezifuna ukunyakaza.

Ukungafihli: I-PVC ayicacanga ngakumbi kune-silicone, iyenza ibe lukhetho olungcono kwizicelo ezifuna ukubonakala.

Iindleko: I-PVC ixabisa ngaphantsi kune-silicone, iyenza ibe lukhetho olungcono lohlahlo lwabiwo-mali.

-Cinga ngento oyisebenzisela imathiriyeli. Ukuba ujonge into oza kuyisebenzisa ngaphandle, uya kufuna into enokumelana nezinto.

-Qwalasela uhlahlo lwabiwo-mali lwakho. Ezinye izinto zibiza kakhulu kunezinye.

-Cinga malunga nokuba lingakanani ixesha ofuna ukulichitha kwiprojekthi. Ezinye izixhobo kulula ukusebenza ngazo kunezinye.

-Jonga iindlela ezahlukeneyo ezikhoyo. Zininzi iintlobo zemathiriyeli onokukhetha kuzo, ke thatha ixesha lakho kwaye ufumane eyona ikulungeleyo.

Isiphelo:

Kukho iiyantlukwano ezininzi phakathi kwe-PVC kunye nerabha ye-silicone. Ezi zingasentla zezona zintlukwano ziphambili. Zininzi iiyantlukwano. Ukukhethwa kwezinto ezithile kufuna ukuba sikhethe ngokweentlobo zemveliso yethu. Ngenxa yokuba iimveliso ezahlukeneyo zinokusebenza okungafaniyo kwizinto eziluhlaza, ngakumbi kwamanye amashishini, ukuchaneka kwezinto eziphathekayo nazo kufuneka ziqwalaselwe ngononophelo ngaphambi kokukhethwa.Isiphelo: I-PVC kunye ne-silicone zineenzuzo kunye neengxaki ezahlukeneyo, ngoko kubalulekile ukuqwalasela into oyifunayo ngaphambi kokuba wenze isigqibo. Loluphi uhlobo lweplastiki olulungele isicelo sakho.

Ukongeza, xa kuthelekiswa nezinye izinto ze-polymer, i-PVC ineenzuzo zexabiso eliphantsi, umthombo obanzi wezinto eziluhlaza, inkqubo elula yokuvelisa, ukugquma kunye ne-flame retardant. Ngexesha elifanayo, imodeli yokusetyenziswa ingaphinda isetyenziswe kwaye ibe nefuthe lococeko kunye nokukhuselwa kwendalo. Kodwa ukuba ufuna ityhubhu yebakala lokutya izixhobo, ijeli ye-silica ilungele ngakumbi. Ukukhetha ababoneleli abafanelekileyo nabakumgangatho ophezulu ngokungathandabuzekiyo sisigqibo esibalulekileyo kulo naliphi na ishishini. I-Bai-OTT inokukubonelela ngeemveliso ezimbini kunye neenkonzo eziqinisekisa umgangatho, ezinokuhlangabezana neemfuno zakho. Emva kweminqweno yethu, wamkelekile ukuba uqhagamshelane nathi.

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