Kupopera mbewu kwa polyurethane ndi zida zopopera mankhwala za polyurethane.Chifukwa chuma chazida zopopera mwamphamvu kwambiriamamenyedwera m’kachipinda kakang’ono kosanganikirana ndipo amapota mwamphamvu pa liwiro lalikulu, kusakaniza kuli kwabwino kwambiri.Zinthu zomwe zikuyenda pa liwiro lalikulu zimapanga madontho abwino a nkhungu pamphuno yamfutindikuwapopera mofanana pamwamba pa chinthucho.Kupopera thovu polyurethane ntchito makamaka kuteteza kutentha ndi kusindikiza kuteteza kutentha ndi firiji.Amagwiritsidwa ntchito popaka zida zotsekera zotenthetsera monga akasinja akulu ozungulira ozungulira, zitoliro zazikulu zokhala ndi mawonekedwe apadera, ndi makoma osungira ozizira, ndipo amatha kuzindikira thovu pamalopo.
Mavuto ambiri amakumana nawo pomanga kupopera mbewu mankhwalawa polyurethane, ndiye mavuto awa ndi otani?Kodi zimenezi zinachitika bwanji?
Nthawi zambiri ili ndi vuto la magwiridwe antchito, lomwe limafotokozedwa motere:
| Wamba Vuto | Chifukwa | Lingalirani |
| Pamwamba pa thovu loyipa komanso losakhazikika | Kusauka kwa atomization, makamaka kofala kwambiri ndi opopera mpweya wapakhomo | Kuthamanga kumbuyo kwa compressor ya mpweya ndi mtunda wa mbale yoyambira kumatha kusinthidwa moyenera.Ngati n'kotheka, talikitsani ndi kuchepetsa mpweya wosakaniza mpweya.Kachilombo kakang'ono.Makina opopera mphamvu a polyurethane amatha kusungidwa bwino kutali ndi gawo lapansi. |
| Nthawi yotulutsa thovu mwachangu komanso kukhuthala kwakuda ndi koyera | ||
| Chithovu ndi chofewa kwambiri | polyether kwambiri | Ndibwino kuti tichite mayeso a thovu aulere pamlingo woyenera.Ngati idakali yofewa, mutha kuwonjezera gawo la isocyanate l moyenera.Ngati idakali yofewa, iyenera kufufuzidwa ngati ethylenediamine iyenera kugwiritsidwa ntchito, moyenerera kuonjezera zopangira zomwe zimagwiritsidwa ntchito muzinthu zoyera. |
| thovu ndi crispy
| Madzi ochulukirapo m'dongosolo | Ngati pamwamba ndi brittle, ganizirani ngati kusiyana kwa kutentha kwa zinthu ndi kutentha kozungulira kuli kwakukulu kwambiri, ngati kutentha kwa zinthu kuli kwakukulu, ndipo kutentha kwapakati kumakhala kochepa.Chifukwa china ndi chakuti pali kusiyana kwakukulu mu viscosity pakati pa polyether ndi Isocyanate ndi isocyanate yambiri. |
| Kusiyanitsa kwa viscosity pakati pa polyether ndi Isocyanate ndikokulirapo | ||
| Mphamvu yotsika ya peel pakati pa thovu ndi gawo lapansi | Pamwamba pa gawo lapansi siloyera, ndi fumbi loyandama kapena madontho amafuta | Panalibe kulowa kwa gawo lapansi, ndipo chinyezi pamawonekedwewo chinkawoneka ndi peeling.Kuphatikiza apo, kutentha kwa gawo lapansi ndikotsika kwambiri, ndipo kuthamanga kwa thovu kumathamanga kwambiri.“Kupopera mbewu mankhwalawa” (mwachitsanzo, kupopera mbewu mankhwalawa mocheperapo msanga), koma kupopera mbewu mankhwalawa mochuluka kungayambitsenso minyewa komanso kusenda. |
| kuphulika kuphulika
| Chifukwa otsika digiri ya nthambi ndi magwiridwe antchito a polyether ntchito thovu dongosolo | Sucrose, mannitol akhoza kuwonjezeredwa ngati choyambira cha polyether ngati kuli koyenera.Komanso, moyenerera onjezani kuchuluka kwa zigawo zopopera panthawi yomanga kuti mupewe zochitika zobwerezabwereza |
| kulekana
| Nthawi yotulutsa thovu ndiyothamanga kwambiri kapena pang'onopang'ono | Samalani kuwongolera kuthamanga kwa thovu |
| Mafuta ochulukirapo a silikoni amawonjezedwa pamakina a thovu |
Nthawi yotumiza: Jul-01-2022