Kodi Kusiyana Pakati pa Silicone Rubber ndi EPDM Ndi Chiyani?

Posankha mphira woti mugwiritse ntchito, Mainjiniya ambiri amafunikira kusankha pakati pa kusankha silicone kapena EPDM. Mwachiwonekere tili ndi zokonda za silicone (!) koma kodi zonsezi zimagwirizana bwanji? Kodi EPDM ndi chiyani ndipo ngati mukupeza kuti mukufunika kusankha pakati pa ziwirizi, mumasankha bwanji? Nayi chitsogozo chathu chachangu cha EPDM…

 

EPDM ndi chiyani?

EPDM imayimira Ethylene Propylene Diene Monomers ndipo ndi mtundu wa rabara wopangidwa kwambiri. Sizolimbana ndi kutentha ngati silikoni koma zimatha kupirira kutentha kwambiri mpaka 130 ° C. Chifukwa chake imagwiritsidwa ntchito ngati gawo m'mafakitale osiyanasiyana kuphatikiza mafakitale, zomangamanga ndi magalimoto. M'malo otentha, EPDM imafika pachimake pa -40 ° C.

EPDM imadziwikanso ngati mphira wakunja chifukwa imalimbana ndi nyengo kuphatikiza acid ndi alkali resistance. Mwakutero, mupeza kuti imagwiritsidwa ntchito pazinthu monga mawindo ndi zitseko zosindikizira kapena mapepala oletsa madzi.

EPDM imakhalanso ndi abrasion yabwino, kudula kukula ndi kukana misozi.

 

Kodi silikoni ingapereke chiyani?
Ngakhale silikoni ndi EPDM amagawana zinthu zingapo monga kukana kwachilengedwe, palinso kusiyana kwakukulu ndipo ndikofunikira kuvomereza izi popanga zisankho zanu pogula.

Silicone ndi kusakaniza kwa carbon, haidrojeni, mpweya ndi silikoni ndipo kusakaniza kumeneku kumapereka maubwino angapo omwe EPDM alibe. Silicone imapirira kutentha kwambiri, imatha kupirira kutentha mpaka 230 ° C ndikusunga mawonekedwe ake. Kuphatikiza apo, ndi elastomer yosabala ndipo ndiyotchuka m'makampani azakudya ndi zakumwa. M'malo otentha, silikoni imadutsanso EPDM ndipo sichifika pachimake mpaka -60 ° C.

Silicone imakhalanso yotambasula ndipo imapereka utali wautali kuposa EPDM. Itha kupangidwanso kuti ikhale yolimbana ndi misozi monga EPDM. Mbali zonse ziwirizi zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito ngati ma vacuum nembanemba pamakina omwe amagwiritsidwa ntchito kupanga mapanelo adzuwa ndi mipando ya laminated, yomwe nthawi zambiri imatchedwa kuti vacuum forming machine.

Silicone ndi elastomer yokhazikika kwambiri ndipo chifukwa chake ogula amawona kuti silikoni ndi yabwino ngati yankho la nthawi yayitali chifukwa cha izi. Ngakhale kuti silikoni ikuwoneka ngati yokwera mtengo kwambiri mwa ziwirizi, moyo wa EPDM nthawi zambiri umakhala wamfupi kuposa wa silikoni choncho umayenera kusinthidwa nthawi zambiri. Izi zimabweretsa mtengo wanthawi yayitali kuposa wa silicone.

Pomaliza, pamene onse EPDM ndi silikoni adzatupa ngati atayikidwa mu mafuta kwa nthawi yaitali pa kutentha kwambiri, silikoni ali kukana mafuta chakudya pa firiji ndi chifukwa chake amagwiritsidwa ntchito pokonza mafuta chakudya monga zisindikizo ndi gaskets pokonza makina.

 

Kodi kusankha pakati pa ziwirizi?
Ngakhale kuti kalozera kakang'ono kameneka kamangofotokozera mwachidule kusiyana pakati pa ziwirizi njira yabwino yodziwira mphira yomwe mukufunikira ndikumvetsetsa cholinga chogwiritsira ntchito komanso momwe mungagwiritsire ntchito. Kudziwa momwe mungafune kugwiritsira ntchito, mikhalidwe yomwe idzagwirizane nayo komanso momwe mungafunikire kuti mugwiritse ntchito kudzakuthandizani kukhala ndi maganizo omveka bwino oti musankhe labala.

Komanso, onetsetsani kuti mwaganizira zinthu monga mphamvu, kusinthasintha ndi kulemera kwa zinthu zomwe zidzafunikire kupirira chifukwa izi zingakhalenso zofunikira kusankha zinthu. Mukakhala ndi chidziwitso ichi chiwongolero chathu chokwanira cha Silicone Rubber vs EPDM chingakupatseni chidziwitso chozama chomwe mukufunikira kuti mutsimikizire komaliza.

Ngati mungafune kukambirana zofunikira za polojekiti yanu ndi gulu lathu ndiye kuti wina amakhalapo nthawi zonse. Ingolumikizanani nafe.