Ndeupi Musiyano Pakati PeSilicone Rubber Uye EPDM?

Pakusarudza rabha rekushandisa, maInjiniya mazhinji anopedzisira ave kuda kuita sarudzo pakati pekusarudza silicone kana EPDM. Isu zviripachena tine zvatinoda zvesilicone(!) Asi izvi zviviri zvinopindirana sei? Chii chinonzi EPDM uye kana ukazviwana uchida kusarudza pakati pezviviri, unosarudza sei? Heino gwara redu rekukurumidza-moto kuEPDM…

 

Chii chinonzi EPDM?

EPDM inomirira Ethylene Propylene Diene Monomers uye imhando yehigh density synthetic rubber. Haikwanise kushingirira kupisa sesilicone asi inokwanisa kushingirira tembiricha yakakwira kusvika 130°C. Nekuda kweizvozvo inoshandiswa sechikamu mukati meakasiyana maindasitiri anosanganisira maindasitiri, kuvaka uye mota. Mutembiricha yakadzikira, EPDM inosvika pabrittle point pa -40°C.

EPDM inofarirwawo serabha repanze sezvo isingaenderane nemamiriro ekunze kusanganisira acid uye alkali resistance. Saka nekudaro, iwe unozoiwana ichishandiswa kune zvinhu zvakaita semahwindo nemasuo zvisimbiso kana mashizha ekudzivirira mvura.

EPDM zvakare ine yakanaka abrasion, kucheka kukura uye kubvarura kuramba.

 

Chii chimwe chinogona kupa silicone?
Nepo silicone ne EPDM vachigovana akati wandei maficha akadai seyakanakisa kuramba kwezvakatipoteredza, kune zvakare akati wandei misiyano yakakosha uye zvakakosha kubvuma izvi paunenge uchiita sarudzo dzako dzekutenga.

Silicone musanganiswa wekabhoni, hydrogen, okisijeni uye silicone uye musanganiswa uyu unopa huwandu hwezvakanakira izvo EPDM isingaite. Silicone inonyanya kushivirira kupisa, ichikwanisa kutsungirira tembiricha inosvika 230 ° C ichichengetedza maitiro ayo emuviri. Zvakare, iine sterile elastomer uye nekudaro inozivikanwa mukati meindasitiri yezvekudya uye zvinwiwa. Mutembiricha yakaderera silicone inodarikawo EPDM uye haisviki brittle point kusvika -60°C.

Silicone zvakare inotambanudza uye inopa kureba kwakawanda kupfuura EPDM. Inogonawo kugadzirwa kuti ive yakafanana nemisodzi inodzivirira seEPDM. Zvese zviri zviviri izvi zvinoita kuti zvive zvakanaka kushandiswa sevacuum membranes mumashini anoshandiswa kugadzira solar panel uye laminated fenicha, inowanzonzi vacuum forming machines.

Silicone ndiyo yakagadzikana elastomer uye nekudaro vatengi vanonzwa kuti silicone iri nani seyakachengetedzeka yenguva refu mhinduro nekuda kweizvi. Kunyange zvazvo silicone ichionekwa seyakanyanya kudhura kubva kune maviri, EPDM's lifespan inowanzopfupika pane iyo silicone uye saka inofanirwa kutsiviwa mukushandisa kakawanda. Izvi zvinoguma nemutengo wenguva refu unopfuura wesilicone.

Pakupedzisira, nepo EPDM uye silicone ichazvimba kana ikaiswa mumafuta kwenguva yakareba panguva yekupisa kwakanyanya, silicone inopesana nemafuta echikafu pakupisa kwekamuri ndosaka ichishandiswa mukugadzira mafuta echikafu sezvisimbiso uye gaskets yekugadzira michina.

 

Ungasarudza sei pakati pezviviri?
Nepo iyi dhairekitori pfupi ichingopfupisa mimwe misiyano pakati pezviviri nzira yakanakisa yekuona kuti ndeipi rabha yaunoda ndeyekunzwisisa chinangwa chekushandisa uye mashandisiro chaiwo. Kuziva kuti uchada kuishandisa sei, kuti ichange iri pasi pemamiriro api uye kuti unoda kuti iite sei zvinokutendera kuti uve nemaonero akajeka ekuti ungasarudza rabha ripi.

Zvakare, ive shuwa yekutarisa zvinhu zvakaita sesimba, kuchinjika uye huremu izvo zvinhu zvinozoda kumira nekuti izvi zvinogona zvakare kuve zvakakosha kusarudza zvinhu. Paunenge uine ruzivo urwu gwara redu rakazara reSilicone Rubber vs EPDM rinogona kukupa ruzivo rwakadzama rwaunoda kuti uite kutsunga kwako kwekupedzisira.

Kana iwe uchida kukurukura zvaunoda purojekiti neimwe yeboka redu saka mumwe munhu anogara aripo. Ingobata nesu.