Pankhani yosankha zinthu zoyenera pulojekiti yanu, ndikofunikira kuyesa zabwino ndi zoyipa za njira iliyonse. Mu positi iyi yabulogu, tiyerekeza zida ziwiri zomwe zimagwiritsidwa ntchito popanga ndi uinjiniya: rabara ya silicone ndi viton.
Kodi mphira wa silicone ndi viton ndi chiyani?
Rabara ya silicone ndi viton ndi zinthu ziwiri zomwe zimagwiritsidwa ntchito popanga ndi uinjiniya. Zili ndi ubwino ndi zovuta zake, zomwe ziyenera kuganiziridwa posankha kuti ndigwiritse ntchito pa cholinga china.
Rabara ya silicone ndi viton ndi mitundu iwiri yosiyana ya elastomer, kapena mphira wopangira. Zida zonsezi zimagwiritsidwa ntchito nthawi zambiri pamagwiritsidwe pomwe kusinthasintha, kulimba, komanso kukana kutentha ndi mankhwala kumafunikira. Komabe, pali kusiyana kwakukulu pakati pa zipangizo ziwiri zomwe ziyenera kuganiziridwa posankha chinthu chogwiritsira ntchito.
Rabara ya silicone ndi polima wopangidwa ndi silicon ndi maatomu okosijeni. Rabara ya silicone imakhala ndi ntchito zosiyanasiyana chifukwa cha kuphatikiza kwake kwapadera. Imalimbana ndi kutentha kwambiri, kotentha ndi kuzizira, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'malo omwe kutentha kwambiri kumakhala chifukwa. Rabara ya silikoni ilinso ndi zida zabwino kwambiri zotchinjiriza magetsi ndipo imalimbana ndi kuwala kwa UV ndi ozoni, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito panja. Komabe, mphira wa silikoni ulibe mulingo wofanana wa kukana madzi opangidwa ndi petroleum monga momwe viton imachitira.
Viton ndi mphira wopangidwa kuchokera ku fluoroelastomer, yomwe ndi copolymer ya vinylidene fluoride ndi hexafluoropropylene. Vinylidene fluoride ndi mphamvu ya fluorinating, yomwe imapatsa viton kukana kwambiri mafuta, mafuta, ndi madzi ena opangidwa ndi petroleum. Viton imalimbananso ndi kutentha kwambiri, zomwe zimapangitsa kuti ikhale chinthu choyenera kugwiritsidwa ntchito mu gaskets ndi zosindikizira mu injini ndi malo ena otentha kwambiri. Viton sawonongeka mosavuta ngati mphira wa silikoni ukakhala ndi kutentha kwambiri. Komabe, viton ilibe mulingo wofanana wokana kuwala kwa UV ndi ozoni monga momwe mphira wa silikoni umachitira.
Kodi pali kusiyana kotani pakati pa mphira wa silicone ndi viton?
Rabara ya silicone ndi Viton ali ndi zosiyana zingapo zomwe zimawasiyanitsa. Chifukwa chimodzi, mphira wa silikoni umakhala ndi kukana kutentha pang'ono kuposa Viton, ndikupangitsa kuti ikhale yabwino kwa mapulogalamu omwe safuna kukana kutentha kwambiri. Kuphatikiza apo, rabara ya silikoni nthawi zambiri imakhala yosinthika kuposa Viton, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito komwe kusinthasintha ndikofunikira. Pomaliza, mphira wa silikoni nthawi zambiri amawononga ndalama zochepa kuposa Viton, zomwe zimapangitsa kukhala chisankho chopanda ndalama pamagwiritsidwe ambiri.
Viton® ndi mphira wopangidwa bwino kwambiri womwe umagwiritsidwa ntchito kwambiri mu O-rings, dongosolo lamafuta ndi ntchito zowongolera utsi. Viton® ndiyonso yoyenera kwa mafakitale ambiri komanso makina opangira ma waya kumene kukana mafuta, mafuta, mafuta odzola ndi mankhwala amphamvu amafunikira.
Rabara ya silikoni ndi elastomer yopangidwa ndi silikoni—yokha polima—yokhala ndi silicon pamodzi ndi mpweya, kaboni, haidrojeni, ndipo nthawi zina zinthu zina zamankhwala. Mapiritsi a silicone amagwiritsidwa ntchito kwambiri m'makampani, ndipo pali mitundu ingapo. Ma mphira a silicone nthawi zambiri amakhala ma polima a gawo limodzi kapena awiri, ndipo amatha kukhala ndi zodzaza kuti apititse patsogolo zinthu zina.
Ubwino wa rabara ya silicone ndi chiyani?
Rabara ya silicone ili ndi maubwino angapo kuposa mitundu ina ya mphira. Imalimbana ndi kutentha kwakukulu, kotentha ndi kuzizira, ndipo imakhalabe yosinthasintha pa kutentha kosiyanasiyana. Imalimbananso ndi ukalamba, kuwala kwa UV, ozone, ndi oxygen. Rabara ya silicone siwonongeka mosavuta, choncho imakhala ndi moyo wautali.
Ubwino wa viton ndi chiyani?
Viton ndi mphira wopangira womwe umagwiritsidwa ntchito pazinthu zosiyanasiyana zomwe zimafuna kukana kutentha, mankhwala, ndi mafuta. Imakana kwambiri kutentha, mankhwala, ndi mafuta, zomwe zimapangitsa kuti ikhale yabwino kusindikiza ntchito. Viton imalimbananso ndi kuzizira kwambiri kuposa ma rubber ena, kupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'malo ovuta kwambiri.
Kodi mphira wa silicone ndi viton amafananiza bwanji ndi mtengo?
Pali kusiyana kwakukulu pamtengo wa rabara ya silicone ndi viton. Rabara ya silicone ndiyotsika mtengo kuposa viton. Kusiyana kwa mtengo ndi chifukwa cha kusiyana kwa ndalama zopangira. Viton amapangidwa kuchokera kuzinthu zopangira, pomwe mphira wa silicone amapangidwa kuchokera kuzinthu zachilengedwe.
Kodi mphira wa silicone ndi viton amafananiza bwanji ndi kulimba?
Rabara ya silicone ndi viton zonse ndi zida zolimba kwambiri. Komabe, viton ndi yolimba kwambiri kuposa mphira wa silicone. Viton imatha kupirira kutentha kwambiri komanso kugonjetsedwa ndi mankhwala, pamene mphira ya silikoni imakhala yosinthasintha komanso imakhala yochepa kwambiri.
Kodi mphira wa silicone ndi viton amafananiza bwanji ndi kukana mankhwala?
Ngakhale kuti mphira wa silikoni ndi viton zimagonjetsedwa ndi mankhwala ambiri, pali kusiyana kwakukulu pakati pa ziwirizi. Viton nthawi zambiri imagonjetsedwa ndi mafuta ndi mafuta, pamene mphira wa silikoni umagonjetsedwa ndi madzi ndi kutentha. Pankhani ya mankhwala enieni, viton imatha kukana acetic acid, acetone, ndi mafuta amchere, pomwe mphira wa silikoni umatha kukana benzene, Freon, ndi peroxide.
Kodi mphira wa silicone ndi viton amafananiza bwanji ndi kukana kutentha?
Rabara ya silicone imatha kupirira kutentha mpaka 180 ° C (356 ° F), pomwe viton imatha kupirira kutentha mpaka 200 ° C (392 ° F). Pankhani ya kukana kutentha, viton ndiyoyenera kugwiritsa ntchito zomwe zimafunikira nthawi yayitali kutentha kwambiri.
