Kutheni usebenzisa abicah ngerabha?
Kuthunyelwe nguNick P ngoFebruwari 21, '18
Iirubber zesilicone ziikhompawundi zerabha zombini iipropathi eziphilayo kunye nezinto ezingaphiliyo, kunye nesilica enomsila omsulwa njengamacandelo amabini aphambili. Banempawu ezininzi ezingekhoyo kwezinye iirubber ze-organic kwaye baneendima ezibalulekileyo kumashishini amaninzi, anje ngombane, i-elektroniki, iimoto, ukutya, ezonyango, izixhobo zombane zasekhaya kunye neemveliso zolonwabo. Irabha yerabha yahlukile ngokukodwa kwirabha yesiqhelo kuba ubume beemolekyuli zepolymer buqukethe imixokelelwane emide yokutshintsha kwee-silicone kunye neeathom zeoksijini. Le polymer ke ngoko inendalo ephilayo kunye nezinto ezingaphiliyo. Icandelo elingaphiliyo lenza ukuba i-polymer ikwazi ukumelana nobushushu obuphezulu kwaye inike iipropathi ezifanelekileyo zokugquma ngombane kunye nokungena kweekhemikhali, ngelixa izinto eziphilayo zikwenza kube bhetyebhetye kakhulu.
Iimpawu
Ubushushu Resistance:
Iirubber zesilicone zixhathisa ubushushu xa kuthelekiswa neerubber eziqhelekileyo. Akukho phantse lutshintsho kwiipropathi nge-150oC kwaye ke zinokusetyenziswa phantse ngokusisigxina. Ngenxa yokumelana nobushushu obugqwesileyo zisetyenziswa kakhulu njengezinto zeenxalenye zerabha ezisetyenziswa kumaqondo obushushu aphezulu.
Ingqele Resistance:
Rubbers abicah ziyabanda kakhulu. Inqaku elibuhlungu leerubbers eziqhelekileyo limalunga ne-20oC ukuya kwi-30oC. Inqaku elibuhlungu leerubber ze-silicone liphantsi njenge -60oC ukuya kwi-70oC.
Ukumelana nemozulu:
Iirubber zesilicone zinokuxhathisa kwemozulu okuhle kakhulu. Ngaphantsi kwe-ozone ambience eveliswa ngenxa yokukhutshwa kwe-corona, iirubber eziqhelekileyo ziba mandundu kakhulu kodwa iirubber ze-silicone zihlala ziphantse zingachaphazeleki. Ngaphandle kokuchaphazeleka kwexesha elide kwi-ultraviolet kunye nemozulu, iipropati zazo zihlala zingatshintshi.
Iipropati zoMbane:
Iirubber zesilicone zineempawu ezifanelekileyo zokugquma ngombane kwaye zizinzile phantsi koluhlu olubanzi lwamaxesha nobushushu. Akukho monakalo ubonakalayo weempawu eziqwalaselwayo xa iirubber ze-silicone zibhaptizwa kulwelo. Ke ngoko zilunge kakhulu ukuba zisetyenziswe njengesixhobo sokukhusela umbane. Ngokukodwa iirubber ze-silicone zixhathisa kakhulu ukubhobhoza kwe-corona okanye umbane kumandla ombane aphezulu kwaye ke zisetyenziswa kakhulu njengezinto zokubambisa iinxalenye zombane ophezulu.
Ukuqhuba kombane:
Umbane ohambisa irubber zerabha zizinto ezenziwa ngerabha ngezinto zombane ezihambisa umbane njengekhabhoni. Iimveliso ezahlukileyo ezinokumelana nombane ukusuka kwi-ohms-cm ezimbalwa ukuya kwi-e + 3 ohms-cm ziyafumaneka. Ngapha koko, ezinye iipropathi ziyathelekiswa nezo zeerubber eziqhelekileyo zesilicone. Ke ngoko zisetyenziswa ngokubanzi njengeendawo zonxibelelwano zebhodi yezitshixo, ngeenxa zonke zezifudumezi kunye nezixhobo zokutywina izinto ezichasayo kunye nezixhobo zombane eziphezulu. Ngokubanzi, iirubber zombane ezihamba ngombane ezikhoyo kwimarike ubukhulu becala ezo zinobungakanani bokubakho kombane ukusukela ku-1 ukuya ku-e + 3 ohms-cm.
Ukukhathala Ukumelana
Ngokubanzi irabha yesilicone ayiphakamanga kuneerubber eziqhelekileyo ngokwamandla malunga noxinzelelo olunamandla njengokumelana nokudinwa. Nangona kunjalo, ukoyisa esi siphene, iirubbers ezinamaxesha ama-8 ukuya kuma-20 angcono kunxunguphalo lokudinwa ziyaphuhliswa. Ezi mveliso zisetyenziswa ngokubanzi kwiinkalo ezininzi ezinje ngebhodi yezitshixo yoomatshini bokuzenzekelayo beofisi kunye neenxalenye zerabha zezithuthi zothutho.
Ukuchasana neMitha eqhumayo:
Iirubber eziqhelekileyo ze-silicone (i-dimenthyl silicone rubbers) azibonisi ukumelana ngokugqwesileyo kwimitha ye-radioactive ngokuthelekiswa nezinye iirubber ze-organic. Nangona kunjalo i-methyl phenyl silicone rubbers, kunye ne-phenyl radical ifakiwe kwi-polymer, inokumelana kakuhle nemitha ye-radioactive. Zisetyenziswe njengeentambo kunye nezihlanganisi kwizikhululo zamandla zenyukliya.
Ukuxhathisa kwi-Steam:
Iirubber zesilicone zinokufakwa emanzini okuphantsi malunga ne-1% naxa zibhaptizwa emanzini ixesha elide. Amandla oomatshini bokuqina kunye neempawu zombane ziphantse zachaphazeleka. Ngokubanzi iirubber ze-silicone azonakalisi xa unxibelelana nomphunga, ifuthe liya libalulekile xa uxinzelelo lomphunga lonyuka. I-Siloxane polymer ikhefu phantsi koxinzelelo oluphezulu lwe-steam ngaphezulu kwe-150oC. Le nto inokulungiswa ngohlobo lwe-silicone yerabha, ukhetho lweearhente zokunyanga kunye nonyango lwasemva.
Ukuqhuba kombane:
Umbane ohambisa irubber zerabha zizinto ezenziwa ngerabha ngezinto zombane ezihambisa umbane njengekhabhoni. Iimveliso ezahlukileyo ezinokumelana nombane ukusuka kwi-ohms-cm ezimbalwa ukuya kwi-e + 3 ohms-cm ziyafumaneka. Ngapha koko, ezinye iipropathi ziyathelekiswa nezo zeerubber eziqhelekileyo zesilicone. Ke ngoko zisetyenziswa ngokubanzi njengeendawo zonxibelelwano zebhodi yezitshixo, ngeenxa zonke zezifudumezi kunye nezixhobo zokutywina izinto ezichasayo kunye nezixhobo zombane eziphezulu. Ngokubanzi, iirubber zombane ezihamba ngombane ezikhoyo kwimarike ubukhulu becala ezo zinobungakanani bokubakho kombane ukusukela ku-1 ukuya ku-e + 3 ohms-cm.
Ukuseta ucinezelo:
Xa iirubber ze-silicone zisetyenziswa njengezinto zerabha zokupakisha ezithi zenze ukuxinana okuxineneyo phantsi kwemeko yokufudumeza, ukukwazi ukuphinda ubuye kubaluleke ngakumbi. Iseti yokucinezelwa kweerubber ze-silicone zibekwa etafileni kuluhlu olubanzi lwamaqondo obushushu ukusuka -60oC ukuya ku-250oC. Ngokubanzi rubbers abicah zifuna iposi yokunyanga. Ngokukodwa kwimeko yemveliso yokuvelisa eneseti ephantsi yoxinzelelo. Unyango ngeposi lunqwenelekayo kwaye ukhetho lweearhente ezifanelekileyo zokuqhafaza luyimfuneko.
Ukuqhuba kobushushu:
Ukuqhutywa kwe-thermal ye-silicone yerabha malunga ne-0.5 e + 3 cal.cm.sec. C. Eli xabiso libonisa ukuqhuba kakuhle kwe-thermal ye-silicone rubbers, ke ngoko zisetyenziswa njengamashiti esinki eshushu kunye neeroller zokufudumeza.
Uqine High kunye iinyembezi Amandla:
Ngokubanzi amandla einyembezi zerabha yesilicone emalunga ne-15kgf / cm. Nangona kunjalo, iimveliso ezomeleleyo kunye nezomeleleyo (30kgf / cm ukuya kwi-50kgf / cm) zikwenziwa ukuba zifumaneke ngokuphucula ipolymer kunye nokukhethwa kweefilitha kunye neearhente zokudibanisa. Ezi mveliso zisetyenziselwa ngcono ukuvelisa ukubumba okunzima, okufuna ukomelela okukhulu kweenyembezi, imingxunya yokubumba eneetape ezibuyela umva kunye nokubumba okukhulu.
Ukungenakutsha:
Iirubber zesilicone azitshisi ngokulula nangona zitsaleleke kufutshane nedangatye. Nangona kunjalo, xa bathe babamba umlilo, bahlala betshisa. Ngokudityaniswa komlilo okhawulezayo okomzuzu, iirubber ze-silicone zinokufumana ukungabinamandla kunye nokucima.
Ezi mveliso azikhuphi nawuphi na umsi okanye iigesi eziyityhefu xa zitshisa, njengoko zingenazo naziphi na iikhompawundi zehalogen ezikhoyo kwiirubber ze-organic. Ke ngoko ziyasetyenziswa kwizixhobo zombane zasekhaya kunye noomatshini baseofisini kunye nezinto zesithuba esivaliweyo kwiinqwelomoya, koomgaqo ongaphantsi nakulwakhiwo lwangaphakathi. Ziyeyona mveliso ibalulekileyo kwimicimbi yezokhuseleko.
Ukungena kweRhasi:
Inwebu yeerubhi zesilicone inokugcwala okungcono kweegesi kunye nomphunga wamanzi kunye nokukhetha okungcono xa kuthelekiswa nerabha yendalo.
Ukungena emzimbeni:
Iirubber ze-silicone zihlala zingena emzimbeni. Banazo neepropathi ezinomdla njengoko zingabangeli ukujiya kwegazi ngokulula. Ke ngoko zisetyenziswa njenge-catheters, ifayibha ezingenanto kunye ne-heart-lung lung, i-vaccines, i-stopper yerabha yezonyango kunye neelensi zokuchonga isifo se-ultrasonic.
Ukucaca kunye nokuBala:
Iirubber eziqhelekileyo ze-organic zimnyama ngenxa yokufakwa kwekhabhoni. Ngokuphathelele kwiirubber ze-silicone, kunokwenzeka ukuba kuveliswe irubber ecace gca ngokudibanisa i-silica entle engonakalisi ukubonakala kwe-silicone.
Ngenxa yokusekuhleni okubalaseleyo, ukucoca imibala kulula. Ke iimveliso ezinemibala zinokwenzeka.
Iipropati ezinganyanzelekanga ezingonakalisiyo:
Iirubber zesilicone zingenakhemikhali kwaye zinobumba obuhle kakhulu obukhupha ipropathi. Kananjalo azonakalisi ezinye izinto. Ngenxa yale propati, zisetyenziswa njengemiqulu eqingqiweyo yoomatshini bokufotokopa, imiqulu yokuprinta, amashiti njl.
Olu lwazi lungentla lukholelwa ukuba luchanekile kodwa aluthethi ukuba lubandakanya konke. Njengoko iimeko zomntu ngamnye zichaphazela ukusetyenziswa kwemveliso nganye, ulwazi olukule datha lwedatha lunokubonwa kuphela njengesikhokelo. Luxanduva lomthengi kuphela ukuvavanya iimfuno zakhe, ngakumbi ukuba ngaba iipropathi ezichaziweyo zeemveliso zethu zanele ukusetyenziswa kwakhe.
Ixesha Post: Nov-05-2019