Iyini I-Methyl Silicone Amafutha?
Ngokuvamile, i-methylamafutha abicahuketshezi olungenambala, alunambitheki, olungenabuthi futhi olungaguquguquki. Ayincibiliki emanzini, i-methanol noma i-ethylene glycol. Ingahlanganiswa ne-benzene, i-dimethyl ether, i-carbon tetrachloride noma uphalafini. Incibilika kancane ku-acetone, i-dioxan, i-ethanol ne-butanol. Ngokuqondene nowoyela we-methyl abicah, ngoba amandla e-intermolecular mancane, uchungechunge lwamangqamuzana luyi-spiral, futhi amaqembu e-organic angashintshwa ngokukhululekile, anezici ezinhle kakhulu zokusabalalisa ukusebenza, ukugcoba, ukumelana nokushisa okuphezulu nokuphansi, ukumelana nesimo sezulu, ukumelana nemisebe, indawo ekhanyayo ephezulu, ukushuba kwesimo esiphansi kanye ne-inertia yokuphila, njll. Isetshenziswa kabanzi ezimbonini zansuku zonke.amakhemikhali, imishini, ugesi,izindwangu, ukugqoka, umuthi nokudla, njll.
Tyena Izici zeAmafutha e-Methyl Silicone
Uwoyela we-silicone we-methyl unokusebenza okukhethekile kakhulu.
■ Ukumelana nokushisa okuhle
Kumangqamuzana kawoyela we-silicone, iketango eliyinhloko lakhiwa -Si-O-Si-, elinesakhiwo esifanayo ne-polymer ye-inorganic futhi enamandla amakhulu ebhondi. Ngakho inokusebenza okuhle kakhulu kokumelana nokushisa.
■ Ukumelana kahle ne-oxidation kanye nokumelana nesimo sezulu
■ Ukusebenza kahle kwe-insulating kagesi
Amafutha e-Silicone anezakhiwo ezinhle kakhulu ze-dielectric. Ngokushintsha kwezinga lokushisa nenombolo yomjikelezo, isici sayo sikagesi sishintsha kancane. I-Dielectric njalo iyancipha njengoba izinga lokushisa likhuphuka, kodwa ushintsho luncane kakhulu. Isici samandla samafutha we-silicone siphansi futhi sikhuphuka ngokukhuphuka kwezinga lokushisa, kodwa ayikho imithetho yemvamisa. Ukumelana nevolumu kuyehla ngokukhuphuka kwezinga lokushisa.
■ I-hydrophobicity enhle kakhulu
Nakuba iketango eliyinhloko lamafutha abicah lakhiwe ngebhondi ye-polar, i-Si-O, amaqembu e-alkyl angeyona i-polar ochungechungeni oluseceleni aqondiswe ngaphandle ukuze avimbele ama-molecule amanzi ukuthi angangeni ngaphakathi futhi adlale indima ye-hydrophobic. Ukungezwani phakathi kobuso phakathi kukawoyela we-silicone namanzi cishe kungama-42 dynes/cm. Uma usakazwa phezu kwengilazi, ngenxa yokuxosha amanzi, uwoyela we-silicone ungenza i-engeli yokuthintana engaba ngu-103°, uma kuqhathaniswa nengcina kapharafini.
■ I-coefficient encane ye-viscosity-temperature
I-viscosity kawoyela we-silicone iphansi futhi ishintsha kancane ngokushisa. Ihlobene nesakhiwo esivunguzayo sama-molecule kawoyela we-silicone. Amafutha e-Silicone yiwo anesici esihle kakhulu se-viscosity-temperature phakathi kwazo zonke izinhlobo zezinto zokuthambisa eziwuketshezi. Lesi sici senza umqondo omkhulu kumishini yokudambisa.
■ Ukumelana okuphezulu nokucindezela
Ngenxa yesakhiwo sawo esivunguzayo kanye nebanga elikhulu le-intermolecular, uwoyela we-silicone unokumelana nokucindezelwa okuphezulu. Ukusebenzisa lesi sici samafutha a-silicone, angasetshenziswa njengemithombo yamanzi. Uma kuqhathaniswa nentwasahlobo yemishini, ivolumu ingancishiswa kakhulu.
■ Ukungezwani okuphansi kwendawo
I-low surface tension yisici samafutha abicah. I-low surface tension ikhombisa umsebenzi ophezulu. Ngakho-ke, uwoyela we-silicone unomsebenzi omuhle kakhulu wokuqeda ugwebu kanye nokusebenza kwe-antifoaming, ukusebenza kokuzihlukanisa nezinye izinto kanye nokusebenza kokugcoba.
∎ I-inertia engenabuthi, engaguquguquki kanye neyokuphila
Ngokombono wokuphila, i-siloxane polymer ingenye yezinhlanganisela ezisebenza kancane kakhulu ezaziwayo. Amafutha e-dimethyl abicah ayisebenzi ezintweni eziphilayo futhi ayinakho ukusabela okwenqaba nezilwane. Ngakho-ke isetshenziswe kabanzi emnyangweni wokuhlinza kanye nomnyango wemithi yangaphakathi, imithi, ukudla nezimonyo, njll.
■ Ukuthambisa okuhle
Amafutha e-Silicone anezakhiwo eziningi ezinhle kakhulu njengesithambiso, njengephuzu eliphakeme elikhanyayo, indawo ebandayo ephansi, ukuzinza okushisayo, ukuguquka kwe-viscosity encane ngezinga lokushisa, akukho ukugqwala kwensimbi futhi akukho thonya elibi ku-raber, ipulasitiki, upende kanye nefilimu kapende we-organic, indawo ephansi. ukungezwani, ukusabalalisa kalula endaweni yensimbi nokunye. Ukuze kuthuthukiswe insimbi ku-lubricity yensimbi kawoyela we-silicone, izithasiselo zokugcoba ezingaxutshwa namafutha abicah zinganezelwa. Izici zokugcoba zamafutha we-silicone zingathuthukiswa kakhulu ngokwethula iqembu le-chlorophenyl eketheni le-siloxan noma esikhundleni seqembu le-dimethyl ngeqembu le-trifluoropropyl methyl.
Isikhathi sokuthumela: Aug-09-2021