Chithovu cha polyurethane ndi polima wapamwamba kwambiri.Chopangidwa kuchokera ku polyurethane ndi polyether chomwe chasakanizidwa mwaukadaulo.Pakadali pano, pali mitundu iwiri ya thovu losinthika komanso thovu lolimba pamsika.Pakati pawo, chithovu cholimba ndi chotsekedwa-maselo, pamene chithovu chosinthika ndi selo lotseguka.Zomangamanga zosiyanasiyana zimakhala ndi magawo osiyanasiyana ogwiritsira ntchito.
Tntchito yake ndi polyurethane thovu
Chithovu cha polyurethane chimagwira ntchito yosokoneza.Kaya ndi thovu lolimba kapena thovu lotha kusintha, zinthu zake ndi zabwino ndipo zimatha kusungidwa.Inde, imathanso kukhala ndi mphamvu yotsekereza mawu, ndipo imatha kugwiritsidwa ntchito m'magawo ena kuti isamveke bwino kwambiri.Low matenthedwe madutsidwe ndi ntchito yabwino kutchinjiriza matenthedwe ntchito.Mu chithovu cholimba cha thovu la polyurethane, pali zinthu zokhala ndi kusungunula kwamafuta ndi ntchito zopanda madzi, zomwe zimachepetsa matenthedwe matenthedwe.M'madera ena, cholumikizira chotsika chotere chimafunikira, ndipo zomatira zina sizoyenera kugwiritsidwa ntchito.
Thentchitochithovu cha polyurethane
Kupulumutsa mphamvu ndi kuteteza chilengedwe.Monga chodzaza, kusiyana kumatha kudzazidwa kwathunthu, ndipo ntchito yomatira imatha kukwaniritsidwa.Pambuyo kuchiritsa, imatha kumamatira mwamphamvu ndipo imakhala ndi moyo wautali wautumiki.
Compression ndi shockproof.Chithovu cha polyurethane chikachiritsidwa kwathunthu, sipadzakhala kusweka, dzimbiri ndi kusenda.Zili ndi mitundu yosiyanasiyana ya ntchito ndi ntchito zosiyanasiyana.Itha kugwiritsidwa ntchito mu mphamvu zatsopano, makampani ankhondo, chithandizo chamankhwala, ndege, zombo, zamagetsi, magalimoto, zida, zida zamagetsi, njanji yothamanga kwambiri, ndi zina zambiri, zokhala ndi ma conductivity otsika, kukana bwino kutentha, komanso kusunga kutentha.Imagwiritsidwa ntchito pamagetsi, magetsi, ndi madera ena, imatha kukana kutentha kwambiri ndikuchita ntchito zoziziritsa kukhosi.
Soundproofing ndi insulating.Pamene thovu la polyurethane litachiritsidwa kwathunthu, likhoza kukhala lopanda chinyezi komanso lopanda madzi.Ngakhale m’malo amdima ndi achinyezi, sipadzakhala mavuto.
Mavuto wamba ndi njira zopewera za thovu la polyurethane
| Vuto Losazolowereka | Zomwe Zingatheke | Njira Zopewera |
| kutayikira thovu |
| 1. Sinthani pulagi ya thovu ndi mphete yakunja ya silicone ya thovu kuti muwonetsetse kuti pulagi ya thovu ndi mbiya zatsekedwa mwamphamvu.2.Sinthani chiŵerengero cha mankhwala a thovu. |
| kuwira | 1. Thovu lambiri.2.Nkhungu yotulutsa thovu imakhala yotayirira ndipo imapunduka ndi mphamvu panthawi yochita thovu. | 1. Sinthani kuchuluka kwa thovu2.Konzani kapena sinthani nkhungu yotulutsa thovu |
| vacuoles | 1. Kuchuluka kwa thovu ndi kochepa2.Chiŵerengero chosayenera cha yankho la katundu ndi otsika thobvu3.Liwiro la thovu ndilothamanga kwambiri, 4. Kutuluka kwa thovu mumgoloku ndikotalika kwambiri. | 1. Onjezani kuchuluka kwa thovu2.Sinthani chiŵerengero cha 3.Sinthani liwiro la thovu 4.Sinthani malo a bowo la jakisoni kapena onjezerani jekeseni kuti mufupikitse kutuluka kwamadzi otulutsa thovu mumgolo. |
| osamata | 1. Pamwamba pa tanki yamkati pali mafuta.Kusalala kwapamwamba kwa liner yamkati kapena khoma lamkati la opaleshoni ndilokwera kwambiri, ndipo kumamatira kwamadzimadzi amadzimadzi ndikosauka3.Kutentha kozungulira ndikotsika kwambiri, ndipo kutentha kwapamtunda kwa yankho la masheya, nkhungu, mbiya ndi zipolopolo ndizotsika kwambiri. | 1. Chotsani madontho amafuta ndi mowa2.Bwezerani liner kapena chipolopolo, kapena chepetsani zofunikira pakumaliza kwa liner (khoma lamkati la chipolopolo)3.Wonjezerani kutentha kozungulira ndikutenthetsanso dongosolo la thovu. |
| Inhomogeneous osakaniza | 1. Kuthamanga kwa jekeseni ndikotsika kwambiri2.Njira yothetsera masheya imakhala yakuda kwambiri kapena kutentha kumakhala kotsika kwambiri, ndipo kutuluka kwake sikukhazikika. | 1. Wonjezerani kuthamanga kwa jekeseni ndikulimbitsa kusakaniza kwa zinthu zakuda ndi zoyera2.Sefa mankhwala a stock solution ndikutsuka mutu wamfuti womwe ukutuluka thobvu nthawi zonse.Onjezani kutentha kwa yankho la stock. |
| kuchepa | 1. Chiŵerengero chosayenera cha stock solution2.Kusakaniza kosagwirizana | 1. Sinthani chiŵerengero cha2.Sakanizani mofanana |
| kusachulukana kosiyana | 1. Kusakanikirana kosafanana2. Kuthamanga kwamadzimadzi otulutsa thovu kumbali iliyonse mu mbiya ndikotalika kwambiri. | 1. Sakanizani mofanana2.Sinthani malo a bowo la jakisoni kapena onjezerani jekeseni kuti mufupikitse kutuluka kwa madzi otulutsa thovu mu mbiya. |
| kusintha | 1. Nthawi yokalamba siikwanira2.Mphamvu ya chipolopolo chakuthupi sikokwanira kufota ndi kupunduka | 1. Wonjezerani nthawi yokalamba2.Kupititsa patsogolo kukana kwa shrinkage kwa zinthu |
Nthawi yotumiza: Jun-23-2022