Vim Li Cas Siv Silicone Roj Hmab?

Tshaj tawm los ntawm Nick P thaum Lub Ob Hlis 21, '18

Cov roj hmab rub tawm yog cov roj hmab sib txuas nrog ob qho tib si organic thiab tsis muaj zog, nrog rau cov ntshiab fumed silica ua ob yam tseem ceeb. Lawv muaj ntau tus yam ntxwv uas tsis muaj nyob hauv lwm cov organic rubbers thiab muaj lub luag haujlwm tseem ceeb hauv ntau yam kev lag luam, xws li hluav taws xob, khoom siv hluav taws xob, tsheb, khoom noj khoom haus, kho mob, khoom siv hauv tsev thiab khoom siv lom zem. Roj hmab roj hmab yog qhov sib txawv tshwj xeeb los ntawm cov roj hmab ib txwm nyob hauv qhov qauv txheej txheem ntawm cov polymer muaj cov saw ntev ntawm kev hloov pauv silicone thiab cov pa oxygen. Vim li no cov polymer muaj cov organic thiab inorganic xwm. Qhov tsis muaj kuab paug ua rau cov polymer tiv taus qhov kub thiab muab cov hluav taws xob zoo insulating zog thiab tshuaj inertness, thaum cov khoom siv organic ua rau nws yoog raws.

Yam ntxwv

Heat Resistance
Thaum Tshav Kub Kub:
Cov roj hmab rub tawm yog cov cua sov tiv taus zoo tshaj piv rau cov tshuaj txhuam cov organic. Yuav luag tsis muaj kev hloov pauv hauv cov khoom ntawm 150oC thiab yog li lawv tuaj yeem siv tau yuav luag tas li. Vim tias lawv tiv taus tshav kub zoo heev lawv tau siv dav ua cov khoom siv rau cov khoom siv roj hmab uas tau siv ntawm qhov kub siab.

Heat Resistance
Mob khaub thuas Kuj:
Silicone rubbers yog qhov txias heev tiv taus. Lub ntsiab lus nkig ntawm cov organic rubbers ib txwm yog txog -20oC txog -30oC. Qhov nkig taw ntawm silicone rubbers yog qis li -60oC txog -70oC.

Heat Resistance
Huab Cua Kuj:
Silicone rubbers muaj huab cua tiv taus zoo heev. Nyob rau hauv qhov chaw ib puag ncig ozone uas tau tsim los ntawm kev tso tawm ntawm corona, cov organic pov tseg ib puag ncig tsis zoo heev tab sis cov roj hmab rub tawm tseem yuav luag tsis muaj kev cuam tshuam. Txawm tias nyob rau lub sijhawm ntev raug rau ultraviolet thiab huab cua, lawv lub zog tseem zoo ib yam tsis hloov pauv.

Heat Resistance
Cov Khoom Hluav Taws Xob:
Cov roj hmab rub tawm muaj cov khoom siv hluav taws xob zoo heev thiab ruaj khov nyob rau ntau qhov ntau zaus thiab qhov kub thiab txias. Tsis muaj qhov tsis zoo ntawm cov yam ntxwv tau pom thaum silicone rubbers tau raus rau hauv cov kua. Yog li ntawd lawv yog qhov zoo tshaj plaws los ua hluav taws xob insulators. Hauv tshwj xeeb cov roj hmab rub tawm yog tiv taus tiv taus corona paug lossis hluav taws xob ntawm nws qhov hluav taws xob siab tshaj plaws thiab yog li ntawd tau siv dav ua cov khoom siv rwb thaiv tsev rau qhov hluav taws xob feem.

Heat Resistance
Kev Coj Hluav Taws Xob:
Cov hluav taws xob ua hluav taws xob silicone rubbers yog cov roj hmab sib txuas nrog cov khoom siv hluav taws xob xws li cov pa roj carbon. Ntau yam khoom lag luam nrog hluav taws xob tiv thaiv txij li ob peb ohms-cm mus rau e+3 ohms-cm muaj. Ntxiv mus, lwm cov khoom kuj tseem sib piv rau cov roj hmab zoo li qub. Yog li ntawd lawv tau siv dav raws li cov ntsiab lus tiv toj ntawm cov twj siv hluav taws xob, ib puag ncig cov cua sov thiab ua cov khoom sib khi rau cov khoom tiv thaiv zoo li qub thiab cov hluav taws xob muaj hluav taws xob siab. Feem ntau, hluav taws xob ua hluav taws xob silicone rubbers muaj nyob rau ntawm kev ua lag luam feem ntau yog cov ntim hluav taws xob tiv taus xws li 1 txog e+3 ohms-cm.

Nkees Kuj:
Feem ntau cov roj hmab silicone tsis zoo dua li cov roj hmab organic ib txwm hais txog lub zog hauv kev nyuaj siab xws li qaug zog tiv taus. Txawm li cas los xij, txhawm rau kov yeej qhov tsis xws luag no, rubbers uas yog 8 txog 20 zaug zoo dua ntawm kev qaug zog kuj tau tsim. Cov khoom lag luam no tau siv dav hauv ntau yam xws li cov twj siv hluav taws xob hauv chaw ua haujlwm thiab cov roj hmab ntawm cov tsheb thauj khoom.

Heat Resistance
Kev Tiv Thaiv Kab Mob Kis:
Cov roj hmab silicone ib txwm muaj (dimenthyl silicone rubbers) tsis qhia pom zoo tiv thaiv hluav taws xob hluav taws xob tshwj xeeb piv rau lwm yam tshuaj txhuam cov organic. Txawm li cas los xij methyl phenyl silicone rubbers, nrog phenyl radical tau koom nrog hauv cov polymer, muaj cov tshuaj tiv thaiv zoo rau hluav taws xob hluav taws xob. Lawv tau siv los ua cov kab hluav taws xob thiab cov khoom sib txuas hauv cov chaw siv hluav taws xob nuclear.

Heat Resistance
Kuj rau Chav:
Cov roj hmab silicone muaj cov dej nqus tau tsawg txog li 1% txawm tias thaum lawv raus dej hauv dej ntev. Lub zog siv zog thiab lub zog hluav taws xob yuav luag tsis muaj kev cuam tshuam. Feem ntau cov roj hmab roj hmab tsis ua rau tsis zoo thaum muaj kev sib cuag nrog cov pa, qhov cuam tshuam ua qhov tseem ceeb thaum lub zog ua kom siab zog. Siloxane polymer tawg hauv qab cov pa siab tshaj 150oC. Qhov tshwm sim no tuaj yeem kho tau los ntawm kev tsim cov roj hmab silicone, xaiv cov tshuaj tua kab mob thiab kho tom qab.

Kev Coj Hluav Taws Xob:
Cov hluav taws xob ua hluav taws xob silicone rubbers yog cov roj hmab sib txuas nrog cov khoom siv hluav taws xob xws li cov pa roj carbon. Ntau yam khoom lag luam nrog hluav taws xob tiv thaiv txij li ob peb ohms-cm mus rau e+3 ohms-cm muaj. Ntxiv mus, lwm cov khoom kuj tseem sib piv rau cov roj hmab zoo li qub. Yog li ntawd lawv tau siv dav raws li cov ntsiab lus tiv toj ntawm cov twj siv hluav taws xob, ib puag ncig cov cua sov thiab ua cov khoom sib khi rau cov khoom tiv thaiv zoo li qub thiab cov hluav taws xob muaj hluav taws xob siab. Feem ntau, hluav taws xob ua hluav taws xob silicone rubbers muaj nyob rau ntawm kev ua lag luam feem ntau yog cov ntim hluav taws xob tiv taus xws li 1 txog e+3 ohms-cm.

Compression Teeb:
Thaum cov roj hmab roj hmab siv los ua cov khoom siv roj hmab rau ntim khoom uas tau hloov pauv hloov pauv hauv qhov cua sov, lub peev xwm rov zoo yog qhov tseem ceeb tshwj xeeb. Cov txheej txheej ntawm cov roj hmab rub tawm yog tabled hla ntau qhov kub ntawm -60oC txog 250oC. Feem ntau silicone rubbers yuav tsum tau kho tom qab. Tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm cov khoom tsim khoom nrog cov teeb tsa qis. Kev kho tom qab yog xav tau thiab xaiv cov tshuaj ua kom zoo tshaj plaws yog qhov tsim nyog.

Kev Kub Kub:
Cov thermal conductivity ntawm silicone roj hmab yog li 0.5 e+3 cal.cm.sec. C. Tus nqi no qhia tau zoo tshaj thermal conductivity rau silicone rubbers, yog li ntawd lawv tau siv los ua cua sov los xij thiab cua sov rauv.

Heat Resistance
Siab Tensile thiab Tear Strengt:
Feem ntau lub zog tsim kua muag ntawm cov roj hmab rub tawm yog li 15kgf/cm. Txawm li cas los xij, cov khoom hnyav thiab lub zog tsim kua muag (30kgf/cm txog 50kgf/cm) kuj tseem muaj los ntawm kev txhim kho cov polymer nrog rau xaiv cov muab tub lim thiab cov kab sib txuas sib txuas. Cov khoom no tau siv zoo tshaj plaws los tsim cov pwm nyuaj, uas xav tau lub zog rhuav ntau dua, pwm kab noj hniav nrog thim rov qab thiab cov pwm loj loj.

Heat Resistance
Incombustibility:
Cov roj hmab roj hmab tsis kub hnyiab tau yooj yim txawm tias lawv raug txheeb ze rau nplaim taws. Txawm li cas los xij thaum lawv tua hluav taws, lawv hlawv tas li. Nrog kev koom ua ke ntawm cov nplaim hluav taws kub ib pliag, cov roj hmab rub tawm tuaj yeem muaj peev xwm kis tau qhov tsis txaus ntseeg thiab muaj peev xwm tua tau. 
Cov khoom no tsis tso cov pa luam yeeb lossis cov pa lom thaum lawv hlawv, vim tias lawv tsis suav nrog cov organic halogen sib txuas uas muaj nyob hauv cov tshuaj txhuam hniav organic. Yog li ntawd lawv tau siv hauv cov cuab yeej siv hluav taws xob hauv tsev thiab tshuab hauv chaw ua haujlwm nrog rau cov khoom siv rau qhov chaw kaw hauv dav hlau, cov tsheb nqaj hlau thiab cov tsev sab hauv. Lawv dhau los ua cov khoom tsis tseem ceeb hauv kev nyab xeeb.

Heat Resistance
Kev Tso Cai Roj:
Cov tawv nqaij ntawm cov roj hmab silicone muaj qhov nkag tau zoo dua rau cov pa roj thiab cov pa dej nrog rau kev xaiv zoo dua piv rau cov roj hmab organic.

Heat Resistance
Lub cev tsis muaj zog:
Silicone rubbers feem ntau inert rau physiology. Lawv kuj muaj cov khoom txaus nyiam xws li lawv tsis ua rau cov ntshav coagulation yooj yim. Yog li ntawd lawv tau siv los ua catheters, hollow fibers thiab dag lub plawv-ntsws, txhaj tshuaj tiv thaiv kab mob, siv roj hmab nres thiab tsom iav rau kev kuaj mob ultrasonic.

Heat Resistance
Pob tshab thiab xim:
Cov organic rubbers ib txwm yog xim dub vim suav nrog cov pa roj carbon. Raws li rau cov roj hmab roj hmab, nws muaj peev xwm los tsim cov pob zeb uas muaj pob tshab los ntawm kev sib xyaw cov silica zoo uas tsis ua rau qhov qub pob tshab ntawm silicone.
Vim yog qhov ua tau zoo tshaj plaws, xim los ntawm cov xim yog yooj yim. Yog li cov khoom muaj xim muaj peev xwm ua tau.

Heat Resistance
Cov Khoom Tsis-nplaum Tsis-corrosive:
Cov roj hmab rub tawm yog cov tshuaj tsis zoo thiab muaj cov pwm zoo tso tawm cov cuab yeej. Xws li lawv tsis xeb lwm yam tshuaj. Vim yog cov cuab yeej no, lawv tau siv los ua cov yob ruaj khov ntawm cov tshuab luam ntawv, luam ntawv yob, ntawv thiab lwm yam.

Cov ntaub ntawv saum toj no ntseeg tau tias raug tab sis tsis tau hais kom suav nrog txhua tus. Raws li kev ua haujlwm ntawm tus kheej cuam tshuam rau kev thov ntawm txhua yam khoom, cov ntaub ntawv hauv daim ntawv no tsuas tuaj yeem pom raws li phau ntawv qhia. Nws yog lub luag haujlwm nkaus xwb ntawm cov neeg siv khoom los ntsuas nws tus kheej cov kev xav tau, tshwj xeeb yog cov khoom tshwj xeeb ntawm peb cov khoom tau txaus rau nws lub hom phiaj siv.


Post lub sij hawm: Nov-05-2019