Halayen Fasaha na Fasa Filayen Kumfa Polyurethane
M kumfa polyurethane (PU) rufi abu ne polymer tare da maimaita tsarin naúrar na carbamate sashi, kafa ta hanyar isocyanate da polyol. Saboda kyakkyawan yanayin yanayin zafi da aikin hana ruwa, yana samun aikace-aikace masu yawa a cikin bango na waje da rufin rufin, da kuma a cikin ajiyar sanyi, wuraren ajiyar hatsi, ɗakunan ajiya, bututun, kofofi, tagogi da sauran wurare na musamman na thermal.
A halin yanzu, baya ga rufin rufi da aikace-aikacen hana ruwa, yana kuma yin ayyuka daban-daban kamar wuraren ajiyar sanyi da manyan sinadarai masu matsakaicin girma.
Maɓalli na fasaha don ginin kumfa polyurethane mai tsauri
Ƙwarewar fasahar feshin polyurethane mai tsauri yana haifar da ƙalubale saboda yuwuwar al'amura kamar ramukan kumfa mara daidaituwa. Yana da mahimmanci a haɓaka horar da ma'aikatan gini ta yadda za su iya sarrafa dabarun feshi da ƙware da warware matsalolin fasaha da aka fuskanta yayin gini. Babban ƙalubalen fasaha na aikin feshin gini an fi mai da hankali kan abubuwa masu zuwa:
Sarrafa kan lokacin fari da tasirin atomization.
Samuwar kumfa polyurethane ya ƙunshi matakai guda biyu: kumfa da warkewa.
Daga matakin haɗuwa har sai an daina fadada girman kumfa - wannan tsari ana kiransa kumfa. A wannan lokacin, yakamata a yi la'akari da daidaito a cikin rarraba ramin kumfa lokacin da aka fitar da adadi mai yawa na ester mai zafi a cikin tsarin yayin ayyukan feshi. Daidaiton kumfa da farko ya dogara da dalilai kamar:
1. Material rabo sabawa
Akwai babban bambanci mai yawa tsakanin kumfa da injina ya samar da wanda aka samar da hannu. Yawanci, ma'aunin kayan da aka gyara na inji shine 1: 1; duk da haka saboda bambance-bambancen matakan danko tsakanin farar kayan masana'anta daban-daban - ainihin ƙimar kayan ƙila ba za ta yi daidai da waɗannan ƙayyadaddun ma'auni wanda ke haifar da rarrabuwa a cikin yawan kumfa ba dangane da yawan amfani da fari ko baki.
2.Ambient zafin jiki
Kumfa na polyurethane suna da matukar damuwa ga yanayin zafi; Tsarin kumfa nasu ya dogara sosai akan samun zafi wanda ya fito daga halayen sinadarai guda biyu a cikin tsarin kanta tare da tanadin muhalli.
Lokacin da yanayin yanayi ya yi girma don samar da zafin muhalli - yana haɓaka saurin amsawa wanda ke haifar da cikakken faɗuwar kumfa tare da daidaitattun ɗimbin yawa-zuwa-core.
Akasin haka a ƙananan zafin jiki (misali, ƙasa da 18 ° C), wasu yanayin zafi yana ɓarkewa cikin kewaye yana haifar da tsawan lokaci na warkewa tare da haɓaka ƙimar ƙirƙira ta haka yana haɓaka farashin samarwa.
3. Iska
Yayin aikin fesa, saurin iska ya kamata ya kasance ƙasa da 5m/s; ƙetare wannan ƙofa yana busar da zafin da ake samu wanda ke shafar saurin kumfa yayin da yake sanya saman samfur ɗin karyewa.
4.Base zafin jiki & zafi
Yanayin bangon tushe yana tasiri tasirin kumfa na polyurethane yayin aiwatar da aikace-aikacen musamman idan yanayi & yanayin bangon tushe ya yi ƙasa - saurin sha yana faruwa bayan murfin farko yana rage yawan amfanin ƙasa gabaɗaya.
Don haka rage lokutan hutun azahar yayin gine-gine tare da tsare-tsare na tsare-tsare ya zama mahimmanci don tabbatar da ingantacciyar ƙimar faɗaɗa kumfa polyurethane.
Rigid Polyurethane Foam yana wakiltar samfurin polymer da aka kafa ta hanyar halayen tsakanin abubuwa biyu - Isocyanate & Polyether hade.
Abubuwan da aka gyara na Isocyanate suna amsawa da sauri tare da samar da haɗin urea; karuwa a cikin abun ciki na urea yana haifar da kumfa mai raguwa yayin da ke rage mannewa tsakanin su & substrates don haka dole ne ya zama busassun busassun wuri mai tsabta daga tsatsa / kura / danshi / gurɓatawa musamman guje wa ruwan sama inda raɓa / sanyi gaban yana buƙatar cirewa ta hanyar bushewa kafin a ci gaba.
Lokacin aikawa: Yuli-16-2024