Methyl Silicone Roj yog dab tsi?
Feem ntau, methylsilicone rojyog tsis muaj xim, tasteless, tsis muaj tshuaj lom thiab tsis-volatile kua.Nws yog insoluble hauv dej, methanol lossis ethylene glycol.Nws tuaj yeem cuam tshuam nrog benzene, dimethyl ether, carbon tetrachloride lossis kerosene.Nws yog me ntsis soluble hauv acetone, dioxan, ethanol thiab butanol.Raws li methyl silicone roj, vim hais tias lub zog intermolecular me me, cov saw molecular yog kauv, thiab cov organic pawg tuaj yeem tig tau ywj pheej, nws muaj cov yam ntxwv zoo ntawm kev sib kis, lubricity, siab thiab kub tsis kam, huab cua tsis kam, hluav taws xob tsis kam, high flash point, low deg nro thiab physiological inertia, thiab lwm yam. Nws yog siv dav hauv kev lag luam niaj hnub.tshuajmachinery, hluav taws xob,textile, txheej, tshuaj thiab zaub mov, thiab lwm yam.
Tnws yam ntxwv ntawmMethyl Silicone Roj
Methyl silicone roj muaj kev ua haujlwm tshwj xeeb.
■ Zoo tiv thaiv tshav kub
Hauv silicone roj molecular, cov saw tseem ceeb yog tsim los ntawm -Si-O-Si-, uas muaj cov qauv zoo sib xws nrog inorganic polymer thiab muaj zog sib zog.Yog li nws muaj kev ua tau zoo ntawm kev ua haujlwm kub.
■ Zoo oxidation tsis kam thiab huab cua tsis kam
■ Zoo hluav taws xob insulating kev ua tau zoo
Silicone roj muaj cov khoom zoo heev dielectric.Nrog rau kev hloov pauv ntawm qhov kub thiab txias, nws cov yam ntxwv hluav taws xob hloov me ntsis.Dielectric tas li txo qis thaum kub nce, tab sis qhov kev hloov me me heev.Lub zog ntawm cov roj silicone yog tsawg thiab nce nrog qhov kub thiab txias, tab sis tsis muaj kev cai rau zaus.Lub ntim resistivity txo nrog nce kub.
■ Zoo heev hydrophobicity
Txawm hais tias cov saw tseem ceeb ntawm cov roj silicone yog tsim los ntawm polar bond, Si-O, cov pab pawg tsis-polar alkyl ntawm sab saw yog taw qhia sab nraud los tiv thaiv cov dej molecules los ntawm kev nkag mus rau sab hauv thiab ua lub luag haujlwm hydrophobic.Lub interfacial nro ntawm silicone roj thiab dej yog hais txog 42 dynes / cm2.Thaum diffusing hla iav, vim nws cov dej tsis zoo, cov roj silicone tuaj yeem tsim lub kaum sab xis ntawm 103 °, piv rau paraffin wax.
■ Me me viscosity-kub coefficient
Lub viscosity ntawm silicone roj yog tsawg thiab nws hloov me ntsis nrog kub.Nws muaj feem xyuam nrog cov qauv kauv ntawm silicone roj molecules.Silicone roj yog ib qho zoo tshaj plaws viscosity-kub tus yam ntxwv ntawm txhua yam kua lubricants.Cov yam ntxwv no ua rau muaj kev nkag siab zoo rau cov khoom siv damping.
■ Kev ua haujlwm siab rau compression
Vim nws cov qauv muab kauv thiab loj intermolecular nrug, silicone roj muaj siab compressibility kuj.Siv cov yam ntxwv ntawm cov roj silicone no, nws tuaj yeem siv los ua kua dej.Piv nrog rau txhua yam caij nplooj ntoos hlav, lub ntim tuaj yeem txo qis heev.
■ Tsawg nto nro
Tsawg qhov nro yog cov yam ntxwv ntawm cov roj silicone.Tsawg nto nro qhia tau tias muaj kev ua haujlwm siab.Yog li ntawd, cov roj silicone muaj kev ua haujlwm zoo heev thiab ua kom muaj zog, kev sib cais nrog lwm cov tshuaj thiab kev ua haujlwm lubricating.
■ Non-toxic, non-volatile thiab physiological inertia
Los ntawm qhov kev xav ntawm lub cev ntawm lub cev, siloxane polymer yog ib qho ntawm cov khoom siv tsawg tshaj plaws paub.Dimethyl silicone roj yog inert rau kab mob thiab tsis muaj kev tsis lees paub cov tsiaj txhu.Yog li nws tau siv dav hauv kev phais mob thiab sab hauv tsev kho mob, tshuaj, zaub mov thiab tshuaj pleev ib ce, thiab lwm yam.
■ Lubricity zoo
Silicone roj muaj ntau yam khoom zoo li cov roj nplua nyeem, xws li lub siab flash point, tsis tshua muaj khov taw tes, thermal stability, me me viscosity hloov nrog kub, tsis muaj corrosion ntawm hlau thiab tsis muaj kev cuam tshuam rau roj hmab, yas, xim thiab organic xim zaj duab xis, tsis tshua muaj nto. nro, yooj yim kis tau ntawm cov hlau nto thiab lwm yam.Txhawm rau txhim kho cov hlau rau steel lubricity ntawm silicone roj, lubricating additives uas yuav tsum tau tov nrog silicone roj yuav muab ntxiv.Lub lubricating zog ntawm silicone roj tuaj yeem txhim kho tau zoo los ntawm kev qhia chlorophenyl pab pawg rau hauv cov saw siloxan lossis hloov cov pab pawg dimethyl nrog trifluoropropyl methyl pawg.
Post lub sij hawm: Aug-09-2021