Pehea e pale ai i ka cavitation i lokomīkini pahu polyurethane
1. E mālama pono i ka ratio a me ka nui o ka injection o ka hopena kumu
E kāohi i ka lakio o nā mea ʻeleʻele, hui pū ʻia ka polyether a me ka cyclopentane.Ma lalo o ke kūlana i hoʻololi ʻole ʻia ka nui o ka injection, inā ʻoi aku ka nui o nā mea ʻeleʻele, e ʻike ʻia ka cavitation, inā ʻoi aku ka nui o ka nui o nā mea keʻokeʻo, e ʻike ʻia nā ʻōhū palupalu, inā nui ka nui o ka cyclopentane, nā ʻōpū. e ʻike ʻia, a inā liʻiliʻi ka hapa, e ʻike ʻia ka cavitation.Inā ʻaʻole kaulike ka hapa o nā mea ʻeleʻele a me ke keʻokeʻo, e hui pū ʻole ʻia a me ka emi ʻana o ka huʻa.

Pono ka nui o ka injection ma muli o nā koi kaʻina.I ka haʻahaʻa ʻana o ka nui o ka injection ma mua o ke kaʻina hana, e haʻahaʻa ka nui o ka hoʻoheheʻe ʻana o ka foam, e haʻahaʻa ka ikaika, a ʻo ke ʻano o ka hoʻopiha ʻana i nā vacuoles incompact.Ke ʻoi aku ka kiʻekiʻe o ka nui o ka injection ma mua o nā koi o ke kaʻina hana, e hoʻonui ʻia ka bubble a me ka leakage, a e deformed ka pahu (puka).
2. Hoomalu wela omīkini pahu polyurethanehe kī i ka hoʻonā ʻana i ka cavitation
Ke kiʻekiʻe loa ka mahana, ikaika ka hopena a paʻakikī ke kāohi.He mea maʻalahi ke ʻike ʻia ʻaʻole kūlike ka hana o ka wai ʻūhū i hoʻokomo ʻia i loko o ka pahu nui.ʻO ka wai ʻōhū i hoʻokomo ʻia ma ka hoʻomaka ʻana ua loaʻa i kahi hopena kemika, a piʻi wikiwiki ka viscosity, a ʻaʻole i pane hou ka wai ʻōpala i hoʻopaʻa ʻia ma hope.ʻO ka hopena, ʻaʻole hiki i ka wai huʻihuʻi i hoʻopaʻa ʻia ma hope e hiki ke hoʻokuʻu i ka wai huʻihuʻi i hoʻokomo mua ʻia i ka hopena mua o ke kaʻina hana huāhuʻu o ka pahu, e hopena i ka cavitation kūloko i loko o ka pahu.
Pono e mālama ʻia nā mea ʻeleʻele a me ke keʻokeʻo i kahi mahana mau ma mua o ka huʻi ʻana, a pono e hoʻomalu ʻia ka mahana hoʻoulu ʻana ma 18 ~ 25 ℃.Pono e hoʻomaluʻia ka mahana o ka umu mua o nā mea hoʻouluʻana ma 30 ~ 50 ℃, a pono e hoʻomaluʻia ka mahana o ka'ōmole ma waena o 35 ~ 45 ℃
Ke haʻahaʻa loa ka mahana o ka huʻihuʻi, ʻilihune ka wai o ka ʻōnaehana wai, lōʻihi ka manawa hoʻōla, ʻaʻole i pau ka hopena, a hiki mai ka cavitation;ke kiʻekiʻe loa ka mahana o ka huʻihuʻi, hoʻololi ʻia ka liner plastik i ka wela, a ʻoi aku ka ikaika o ka ʻōnaehana ʻōhua-wai.No laila, pono e ho'omalu pono 'ia ka mahana o ka hu'a a me ka wela o ka umu.
ʻOi aku i ka hoʻoilo, pono e hoʻomaʻamaʻa mua ʻia ka pahu huʻi, ka umu hoʻomoʻa, ka umu ahi, ka pahu a me ka puka no nā minuke 30 i kēlā me kēia kakahiaka ke wehe ʻia ka laina.Ma hope o ka huʻa ʻana no kekahi manawa i ke kauwela, pono e hoʻomaha ʻia ka ʻōnaehana hū.

Ka Mana Paʻi o ka Mīkini Puka Polyurethane
He haʻahaʻa loa ke kaomi ʻana o ka mīkini hū.ʻAʻole hui like ka ʻeleʻele, keʻokeʻo a me ka cyclopentane, ka mea i hōʻike ʻia e like me ke ʻano like ʻole o ka polyurethane foam, nā ʻūhā nui kūloko, ka ʻūhā ʻana, a me ka ʻūhā palupalu kūloko: ʻike ʻia nā streaks keʻokeʻo, melemele a ʻeleʻele paha ma ka ʻōpala, hāʻule ka pahu.ʻO ke kaomi ʻana o ka mīkini hoʻoulu ʻana he 13 ~ 16MPa