CHINA NBR & Polyurethane ORINGS FACTORY KUCHOKERA KU NINGBO BODI SEALS CO., LTD

Ngakhale mphira wa nitrile butadiene (NBR) wakhala akugwiritsidwa ntchito kwambiri ndi makina osindikizira amphepo kwazaka zambiri, kupita patsogolo pakupanga chisindikizo cha polyurethane, kukonza ndi kamangidwe kukuwononga kwambiri udindo wa NBR pamakampani.Zikuwonekeratu kuti zinthu zothandiza kwambiri zimaphatikizapo kukana kuvala, kuyanjana kwamadzimadzi, kukana kwa ozoni, mphamvu zamakina, komanso kuthekera kosunga zinthu zonsezi pakutentha kochepa.
Polyurethane yakhala chinthu choyenera kusindikiza ma fani / majenereta akuluakulu, zotengera zazitali komanso zopingasa.Komabe, kungosintha zinthu mumpangidwe womwe ulipo nthawi zambiri sikokwanira.Zisindikizo ziyenera kupangidwa ndi polyurethane m'maganizo.
Njira imodzi yowunikira kulimba kwa ma polyurethanes ndikuyesa kuyesa kofanana ndi ng'oma monga ASTM D5963.Njirayi imagwiritsidwa ntchito poyesa mphira, koma imagwiranso ntchito ku polyurethane, makamaka poyerekeza ndi mavalidwe.Pansipa pali mindandanda yazovala zazinthu zosiyanasiyana zoyesedwa ndi System Seals ku Cleveland.Zindikirani kuti NBR ndi HNBR ali ndi ARI pafupifupi 1.5, pamene polyurethanes ali ndi ARI ya 4 mpaka 8. Izi ndizowongolera mpaka kasanu ndi kamodzi.
Polyurethane imasunga mayendedwe ake a ARI pakapita nthawi komanso pambuyo pokumana ndi madzi osiyanasiyana, makamaka zamadzimadzi zochokera kumafuta.Njira imodzi yodziwira izi ndi zaka za ASTM D5963 kuvala zitsanzo zamadzimadzi pa 100 ° C kwa masiku 90 (80 ° C pamadzi opangidwa ndi madzi) ndikubwereza kuyesanso masiku 30 aliwonse.Pansipa pali zotsatira zofananira, koma kutsimikizira kumalimbikitsidwa pamadzi aliwonse.
Chithunzi 3. Kusungidwa kwa ARI mu NBR ndi hydrolysis-resistant polyurethane pambuyo pokalamba mu mafuta osungunuka amchere pa 100 ° C.
Ngakhale kuti zofotokozera zimasonyeza kugwirizana ndi madzi omalizidwa, kuyezetsa kukalamba kofulumira (kapena zaka zautumiki) kuyenera kudziwa momwe zinthu zimagwirira ntchito komanso kukhazikika kwazinthu zomwe zimakhudzidwa ndi madzi enaake.Zisindikizo za System zimayesa kuyenderana kwamadzimadzi kwa masiku 90 m'malo mwa kuyesa kwa maola 168 chifukwa System Seals imazindikira kusintha kwakukulu kwazinthu zofunikira pambuyo pa maola 168 amadzimadzi.
Makonda a polyurethane amawonetsa kukana kwamadzimadzi poyerekeza ndi NBR mumafuta omwe amapezeka kwambiri pamakampani opanga mphamvu zamagetsi.Pansipa pali tebulo lofananira lamafuta otchuka awa.
NBR imadziwika kuti imatha kutengeka ndi ozonolysis, pomwe mamolekyu a ozoni amathyola zomangira za mankhwala mu NBR yopanda unsaturated.Kuphulika kwa ozoni kumakhala kofala pamene mphira wa nitrile butadiene (NBR) umakhala wopindika ngakhale pang'ono.Njira imodzi ndiyo kubaya sera mu NBR, kupanga chotchinga choletsa ozoni chomwe chimateteza NBR.Tsoka ilo, sera sisintha mgwirizano wamankhwala wa NBR.Ngati NBR ikumana ndi zochitika zachilengedwe zomwe zimachotsa sera, imatha kuwonongekanso.Ma polyurethanes ena apadera omwe amagwiritsidwa ntchito pazisindikizo zamphamvu zamphepo mwachilengedwe amakhala osamva ozoni.
Zotanuka modulus, mphamvu ndi elongation ya polyurethane ndi apamwamba kuwirikiza katatu kuposa NBR zambiri.Zotsatira zake, zisindikizo za polyurethane zimatha kupirira zovuta zamakina komanso kupirira katundu wapamwamba wamakina.
NBR wamba imakhala ndi zotanuka modulus ya 10-15 MPa ndi mphamvu yolimba ya 20 MPa.Ma polyurethanes ambiri amakhala ndi zotanuka modulus ya 45-60 MPa ndi mphamvu yolimba ya 50-60 MPa.Izi zikutanthauza kuti zinthuzo ndizovuta kwambiri kuposa NBR, zomwe zikutanthauza kusungirako mawonekedwe abwino komanso kukana kwambiri kupsinjika.
Mu makina opangira mphepo, kutentha kwakukulu nthawi zambiri sikumakhala vuto.Komabe, kutengera malo ndi kutalika, kutentha kochepa kwa -40 ° C sikwachilendo.Standard NBR imakhala ndi kutentha kochepa kwambiri kwa -20 ° C, ndipo kusanthula kwamphamvu kwamphamvu kwawonetsa kuti mphamvu zambiri zamphepo za polyurethanes sizimakhudzidwa ndi kutentha mpaka -40 ° C.
Polyurethane ndi chisankho chachilengedwe cha zisindikizo zamphamvu zamphepo chifukwa champhamvu zake zamakina, kukana kwa ozone bwino, kutsika kwa mavalidwe komanso kutentha kocheperako.M'munsimu muli mabanja awiri a mapulogalamu omwe polyurethane ali oyenerera bwino.Chithunzi chakumanzere chikuwonetsa kupindika kofananira ndi mawonekedwe amtundu wa polyurethane wokhala ndi chisindikizo.Chithunzi chomwe chili kumanja chikuwonetsa chisindikizo cha System Seals swirl, chosindikizira chachikulu chomwe chimapopera mafuta m'malo osungiramo madzi akamazungulira.
Ngati mukufuna kuthandizira ku Windpower, chonde titumizireni: https://www.bdseals.com kapena www.bodiseals.com.NINGBO BODI SEALS CO., LTD kupanga mitundu yonse ya osiyana apamwamba mphira chisindikizo,okonda ,Gaskets .