Polyurethane thovu wothandizira
Polyurethane thovu wothandizila ndi mankhwala osakaniza mtanda wa luso aerosol ndi polyurethane thovu technology.There mitundu iwiri ya mayiko siponji pa mtundu chubu ndi mfuti type.Styrofoam ntchito ngati thovu wothandizila kupanga thovu microcellular. Zitha kugawidwa m'mitundu iwiri: mtundu wakuthupi ndi mtundu wamankhwala. Izi zimatengera ngati kupanga gasi ndi njira yakuthupi (Volatilization kapena sublimation) kapena njira yamankhwala (Kuwonongeka kwa kapangidwe ka mankhwala kapena machitidwe ena amankhwala)
Dzina lachingerezi
PU Foam
Zamakono
Ukadaulo wa aerosol ndiukadaulo wa thovu la polyurethane
Mitundu
Mtundu wa chubu ndi mtundu wa mfuti
Mawu Oyamba
Polyurethane thovu wothandizira dzina lonse chigawo chimodzi polyurethane thovu sealant. Mayina ena: thovu wothandizira, styrofoam, PU sealant. English PU FOAM ndi chida chopangidwa ndi kuphatikiza kwaukadaulo wa aerosol ndi ukadaulo wa thovu la polyurethane. Ndi chinthu chapadera cha polyurethane momwe zinthu monga polyurethane prepolymer, chowomba, ndi chothandizira zimadzazidwa ndi aerosol yosagwira ntchito. Zinthuzo zikapopera kuchokera ku tanki ya aerosol, zinthu za thovu ngati polyurethane zidzakula mofulumira ndipo zidzalimba ndikuchitapo kanthu ndi mpweya kapena chinyezi mu gawo lapansi kuti apange foam.Unyinji wa ntchito. Zili ndi ubwino wa kutsogolo kutsogolo, kukulitsa kwakukulu, kuchepa kwazing'ono, etc.Ndipo chithovu chimakhala ndi mphamvu zabwino komanso kumamatira kwambiri. Chithovu chochiritsidwa chimakhala ndi zotsatira zosiyanasiyana monga caulking, kugwirizana, kusindikiza, kutsekemera kwa kutentha, kutsekemera kwa mawu, etc.Ndizinthu zomangira zachilengedwe, zopulumutsa mphamvu komanso zosavuta kugwiritsa ntchito. Ikhoza kugwiritsidwa ntchito kusindikiza ndi plugging, kudzaza mipata, kukonza ndi kugwirizanitsa, kuteteza kutentha ndi kutsekemera kwa mawu, ndipo ndizofunikira makamaka kusindikiza ndi kutseka madzi pakati pa zitseko za pulasitiki kapena aluminium alloy alloy ndi mawindo ndi makoma.
Kufotokozera kwa magwiridwe antchito
Nthawi zambiri, nthawi yowuma pamwamba imakhala pafupifupi mphindi 10 (pansi pa kutentha kwa chipinda 20 ° C). Nthawi youma yonse imasiyanasiyana ndi kutentha ndi chinyezi. Nthawi zonse, nthawi yowuma m'chilimwe imakhala pafupifupi maola 4-6, ndipo zimatenga maola 24 kapena kuposerapo kuti ziume pafupifupi ziro m'nyengo yozizira. akuti moyo wake wautumiki sudzakhala wochepera zaka khumi. The thovu wochiritsidwa amakhalabe elasticity wabwino ndi adhesion mu kutentha osiyanasiyana -10 ℃ ~ 80 ℃. Chithovu chochiritsidwa chimakhala ndi ntchito za caulking, kugwirizana, kusindikiza, ndi zina zotero. Kuphatikiza apo, wothira thovu wa polyurethane amatha kufikira B ndi C grade retardant flame retardant.
Kuipa
1. Polyurethane thovu caulking wothandizira, kutentha ndi mkulu, izo zimayenda, ndipo bata ndi osauka. Osakhazikika ngati thovu lolimba la polyurethane.
2. Polyurethane foam sealant, kuthamanga kwa thovu kumachedwa kwambiri, kumanga malo akuluakulu sikungapangidwe, kutsetsereka sikungathe kuyendetsedwa, ndipo khalidwe la thovu ndilochepa kwambiri.
3. Polyurethane thovu sealant, okwera mtengo
Kugwiritsa ntchito
1. Kuyika kwa zitseko ndi mazenera: Kusindikiza, kukonza ndi kumanga pakati pa zitseko ndi mawindo ndi makoma.
2. Chitsanzo chotsatsa: Chitsanzo, kupanga tebulo la mchenga, kukonza bolodi lachiwonetsero
3. Kutsekereza mawu: Kudzaza mipata yokongoletsa zipinda zolankhulira ndi zipinda zoulutsira mawu, zomwe zimatha kuyimitsa mawu komanso kuletsa mawu.
4. Kulima: Kukonza maluwa, kulima ndi kukongoletsa malo, kuwala ndi kukongola
5. Kukonza tsiku ndi tsiku: Kukonza zibowo, mipata, matailosi apakhoma, matailosi apansi, ndi pansi.
6. Kutsekera kwamadzi: Konzani ndi pulagi kutayikira madzi mapaipi, ngalande, etc.
7. Kulongedza ndi kutumiza: Imatha kukulunga zinthu zamtengo wapatali komanso zosalimba, kupulumutsa nthawi ndi liwiro, kugwedezeka komanso kusagwira ntchito.
Malangizo
1. Musanamangidwe, madontho a mafuta ndi fumbi loyandama pamalo omanga ayenera kuchotsedwa, ndipo madzi pang'ono ayenera kupopera pamalo omanga.
2. Musanagwiritse ntchito, gwedezani tanki yotulutsa thovu ya polyurethane kwa masekondi osachepera 60 kuti muwonetsetse kuti zomwe zili mu tanki ndi zofanana.
3. Ngati mfuti yamtundu wa polyurethane ikugwiritsidwa ntchito, tembenuzirani thanki mozondoka kuti mulumikizane ndi ulusi wamfuti wamfuti, yatsani valavu yotuluka, ndikusintha kayendedwe kake musanapope. Ngati chubu chamtundu wa polyurethane chikugwiritsidwa ntchito, pindani mphuno ya pulasitiki pa ulusi wa vavu, gwirizanitsani chitoliro cha pulasitiki ndi mpatawo, ndipo kanikizani mphunoyo kuti mupondereze.
4. Samalani kuthamanga kwaulendo popopera mankhwala, nthawi zambiri voliyumu ya jakisoni imatha kukhala theka la voliyumu yodzaza yofunikira. Lembani mipata yowongoka kuchokera pansi mpaka pamwamba.
5. Podzaza mipata monga denga, chithovu chosachiritsika chikhoza kugwa chifukwa cha mphamvu yokoka. Ndibwino kuti mupereke chithandizo choyenera mwamsanga mutatha kudzaza, ndikuchotsani chithandizo chithovucho chikachiritsidwa ndikumangirizidwa ku khoma la kusiyana.
6. Chithovucho chidzatulutsidwa pafupifupi mphindi 10, ndipo chikhoza kudulidwa pambuyo pa mphindi 60.
7. Gwiritsani ntchito mpeni kuti mudule chithovu chowonjezera, ndiyeno muvale pamwamba ndi matope a simenti, utoto kapena gel osakaniza.
8. Yezerani chopangira thovu molingana ndi zofunikira zaukadaulo, onjezerani nthawi 80 zamadzi oyera kuti muchepetse kupanga madzi otulutsa thovu; ndiye ntchito makina thovu kuti thovu ndi thovu madzi, ndiyeno kuwonjezera thovu kwa uniformly wosanganiza maginito simenti slurry malinga anakonzeratu kuchuluka Muziganiza wogawana, ndipo potsiriza kutumiza thovu magneti slurry kwa kupanga makina kapena nkhungu kupanga.
Zolemba Zomangamanga:
Kutentha kwanthawi zonse kwa thanki yotulutsa thovu ya polyurethane ndi +5+40 ℃, Kutentha kogwiritsa ntchito bwino +18°+25℃. Pa kutentha kochepa, tikulimbikitsidwa kuika mankhwalawa pa kutentha kosasintha kwa +25 ° + 30 ℃ kwa mphindi 30 musanagwiritse ntchito kuti muwonetsetse kuti ntchito yake ikuyenda bwino. + 80 ℃.
Polyurethane thovu ndi thovu lochiritsa chinyezi. Iyenera kupopera pamtunda wonyowa ikagwiritsidwa ntchito. Kuchuluka kwa chinyezi, mofulumira kuchiritsa.Chithovu chosagwedezeka chikhoza kutsukidwa ndi woyeretsa, pamene chithovu chochiritsidwa chiyenera kuchotsedwa ndi njira zamakina (sanding kapena kudula). Chithovu chochiritsidwa chidzakhala chachikasu pambuyo poyatsidwa ndi kuwala kwa ultraviolet. Ndibwino kuti muvale chithovu chochiritsidwa ndi zipangizo zina (matope a simenti, utoto, etc.). Mukatha kugwiritsa ntchito mfuti yopopera, chonde iyeretseni ndi woyeretsa wapadera nthawi yomweyo.
Mukasintha thanki, gwedezani bwino thanki yatsopano (kugwedezani nthawi zosachepera 20), chotsani thanki yopanda kanthu, ndipo mwachangu m'malo mwa thanki yatsopano kuti doko lolumikizira mfuti la spray lisalimba.
Valve yowongolera otaya ndi choyambitsa chamfuti chopopera imatha kuwongolera kukula kwa kutuluka kwa thovu. Jakisoniyo akasiya, nthawi yomweyo mutseke valavu yothamanga molunjika.
Chitetezo
Chithovu chosachiritsika chimamatirira pakhungu ndi zovala. Musakhudze khungu lanu ndi zovala zanu mukamagwiritsa ntchito. Polyurethane thobvu wothandizira thanki ndi kuthamanga kwa 5-6kg/cm2 (25 ℃) , ndi kutentha sayenera upambana 50 ℃ posungira ndi zoyendera kupewa kuphulika kwa thanki.
Matanki otulutsa thovu a polyurethane ayenera kutetezedwa ku kuwala kwa dzuwa ndipo ana amaletsedwa. Matanki opanda kanthu mukagwiritsidwa ntchito, makamaka akasinja a thovu a polyurethane omwe sanagwiritsidwe ntchito, sayenera kutayidwa. Ndikoletsedwa kuwotcha kapena kuboola akasinja opanda kanthu.
Khalani kutali ndi moto wotseguka ndipo musagwirizane ndi zinthu zoyaka komanso zophulika.
Malo omangawo ayenera kukhala ndi mpweya wabwino, ndipo ogwira ntchito yomanga ayenera kuvala magolovesi ogwira ntchito, maovololo ndi magalasi pomanga, ndipo asasute.
Ngati chithovucho chakhudza maso, chonde sambitsani ndi madzi musanapite kuchipatala kuti mukalandire chithandizo; ikakhudza khungu, mutsuke ndi madzi ndi sopo
Kuchita thovu
1. Njira ya Prepolymer
Njira yopangira thovu isanakwane polima ndi kupanga (zinthu zoyera) ndi (zakuda) kukhala polima poyamba, kenako ndikuwonjezera madzi, chothandizira, surfactant, zowonjezera zina ku pre-polymer, ndi kusakaniza mothamanga kwambiri. Zilowerere, pambuyo kuchiritsa, akhoza kuchiritsidwa pa kutentha
2. Njira ya semi-prepolymer
Njira yotulutsa thovu ya semi-prepolymer ndi kupanga gawo la polyether polyol (zinthu zoyera) ndi diisocyanate (zakuda) kukhala prepolymer, ndikuphatikiza gawo lina la polyether kapena polyester polyol ndi diisocyanate, madzi , Catalysts, surfactants, zowonjezera zina, ndi zina zimawonjezeredwa ndi kusakaniza pansi pa kusonkhezera kothamanga kwa thovu.
3. Njira imodzi yotulutsa thovu
Onjezerani polyether kapena polyester polyol (zinthu zoyera) ndi polyisocyanate (zakuda zakuda), madzi, chothandizira, surfactant, kuwomba wothandizila, zina zowonjezera ndi zipangizo zina mu sitepe imodzi, ndi kusakaniza pansi-liwiro loyambitsa ndiyeno thovu.
Njira imodzi yotulutsa thovu ndi njira yomwe imagwiritsidwa ntchito kwambiri. Palinso njira yopangira thovu pamanja, yomwe ndi njira yosavuta kwambiri. Zida zonse zikayesedwa molondola, zimayikidwa mu chidebe, ndiyeno zipangizozi zimasakanizidwa mofanana ndi jekeseni mu nkhungu kapena malo omwe amafunika kudzazidwa ndi thovu. Zindikirani: Poyeza, polyisocyanate (zakuda) iyenera kuyezedwa komaliza.
Chithovu cholimba cha polyurethane nthawi zambiri chimakhala ndi thovu kutentha kwa firiji, ndipo kuumba kwake kumakhala kosavuta. Malinga ndi kuchuluka kwa makina omanga, amatha kugawidwa m'machitidwe a thovu ndi makina otulutsa thovu. Malinga ndi kukakamizidwa panthawi yotulutsa thovu, imatha kugawidwa kukhala thovu lothamanga kwambiri komanso kutulutsa thovu lotsika. Malinga ndi njira yopangira, imatha kugawidwa kukhala kuthira thovu ndi kupopera thovu.
Ndondomeko
Polyurethane thovu wothandizira adalembedwa ndi Unduna wa Zomangamanga ngati chinthu chomwe chiyenera kukwezedwa ndikugwiritsidwa ntchito munthawi ya "Eleventh Five-year Plan".
Chiyembekezo cha msika
Popeza zinthu za 2000 zidakwezedwa ndikugwiritsidwa ntchito ku China, kufunikira kwa msika kukukulirakulira. Mu 2009, kugwiritsidwa ntchito kwapachaka kwa msika wa zomangamanga kupitilira zitini 80 miliyoni. Ndi kusintha kwa zofunikira zomanga ndikulimbikitsa nyumba zopulumutsa mphamvu, zinthu zoterezi Kuchuluka kwa glutathione kudzawonjezeka pang'onopang'ono m'tsogolomu.
Kunyumba, ukadaulo wopanga ndi kupanga wamtunduwu wapangidwa bwino, zotulutsa thovu zopanda fulorini zomwe siziwononga ozoni wosanjikiza nthawi zambiri zimagwiritsidwa ntchito, ndipo zopangidwa ndi pre-foaming (1) zapangidwa. Kupatula kuti opanga ena amagwiritsabe ntchito zida za valve zomwe zatumizidwa kunja, zida zina zothandizira zidapangidwa kunyumba.
Buku la malangizo
(1) Zomwe zimatchedwa pre-foaming zikutanthauza kuti 80% ya polyurethane thovu wothandizila wakhala thovu pambuyo kupopera mbewu mankhwalawa, ndipo thovu wotsatira ndi kochepa kwambiri.
Izi zimathandiza ogwira ntchito kuti agwire mphamvu ya manja awo akamagwiritsa ntchito mfuti yotulutsa thovu, yomwe ili yosavuta komanso yosavuta komanso yosawononga guluu. Chithovucho chikapopera, guluuyo pang'onopang'ono umakhala wokhuthala kuposa momwe amawombera.
Mwanjira imeneyi, zimakhala zovuta kwa ogwira ntchito kuti agwire mphamvu ya kukoka chowombera m'manja mwawo, ndipo n'zosavuta kutaya guluu, osachepera 1/3 ya zinyalala. Kuphatikiza apo, guluu wowonjezedwa pambuyo pake ndi wosavuta kufinya zitseko ndi mazenera pambuyo pochiritsa, monga guluu wamba mufakitale yamsika.
Nthawi yotumiza: May-25-2021