Polystirene yagutse (EPS), polystirene (XPS) hamwe na polyurethane (PU) kuri ubu ni ibikoresho bitatu kama gakoreshwa cyane cyane mugukingira inkuta zo hanze.Muri byo, PU kuri ubu izwi nkibikoresho byiza byokwirinda kwisi, bifite ubushyuhe buke buke mubikoresho byose byokwirinda.Iyo ubucucike bwa PU bukomeye ari 35 ~ 40 kg / m3, ubushyuhe bwacyo ni 0.018 ~ 0.023W / (mK).Ingaruka yo gukingira ya 25mm yuburebure bwa PU ifuro ihwanye niy'uburebure bwa 40mm ya EPS, ubwoya bwa minisiteri 45mm, ubwoya bwa 380mm cyangwa uburebure bwa 860mm.Kugirango ugere ku ngaruka zimwe, ubwinshi bwacyo ni kimwe cya kabiri cya EPS.

Raporo iherutse kwerekana ko imwe mu mpamvu zatumye ikwirakwizwa ry’umuriro ryihuta mu Isi ya Hangzhou na Snow World ari uko ibikoresho byo mu bwoko bwa PU hamwe n’ibiti by’icyatsi kibisi byifashishijwe mu nyubako bitujuje ibyangombwa bisabwa kugira ngo bidatwikwa ndetse n’umuriro, umwotsi ukwirakwira vuba nyuma yumuriro.Impamvu ya kabiri ni uko ingamba zo gutandukanya umuriro n’ingamba zo gukumira umwotsi hagati ya Hangzhou Ice na Snow World n’utundi turere tw’inyubako zitari zihari.Urukuta rw'imbere rukozwe mu kibaho cya PU sandwich, kandi inzugi zisohoka ni inzugi zashyizwemo ubushyuhe aho kuba inzugi zashyizwe ku muriro, ibyo bikaba byatumye umuriro ukwirakwira vuba mu igorofa rya kabiri nyuma yuko umuriro ubaye.

Imwe mu mpamvu zitera abantu bahitanwa n’uko umuriro umaze gutangira, ibikoresho nka PU n’ibihingwa bya pulasitike byatwitse ahantu hanini, bitanga umwotsi mwinshi w’ubumara bw’ubushyuhe bwo hejuru, kandi umwotsi w’umuriro urekura wakomeje kwegeranya amaherezo utera umwanda, bikaviramo guhitana abantu.

Mu buryo butunguranye, ibikoresho byo kubika PU byabaye intego yo kunengwa maze bigwa mu gihuhusi cyibitekerezo rusange!

Gutekereza kuri iki gice, imvugo ni gato uruhande rumwe, kandi hariho bibiri bidahagije.

Icya mbere: Ibikoresho byo kubika PU hamwe n’ibiti byatsi bya pulasitiki bigereranywa byakoreshejwe mu nyubako ntibyujuje ibyangombwa bisabwa kugira ngo bidacanwa n’umuriro.

Dukurikije ibyiciro bya GB8624-1997 byo gutwika imyitwarire yubaka ibicuruzwa, polyurethane yo mu rwego rwa B2 irashobora kuzamurwa ikagera kuri B1 nyuma yo kongeramo umuriro udasanzwe.Nubwo ibibaho bya PU bifite ibimenyetso biranga ibikoresho kama, birashobora gusa kugera kurwego rwa flame retardant ya B1 mubihe bya tekiniki yubu.Byongeye kandi, haracyari inzitizi za tekiniki ningorane mugutezimbere no gukora imbaho ​​za B1 kurwego rwa PU.PU ikibaho cyakozwe nabashinwa benshi bato bato n'abaciriritse barashobora kugera kurwego rwa B2 cyangwa B3 gusa.Nyamara, inganda nyinshi nini mubushinwa zirashobora kubigeraho.Ikibaho cya PU gikozwe muri polyether hamwe na PMDI (Polymethylene polyphenyl polyisocyanate) kugirango ifate ifuro kandi ishyirwa mubikorwa nka B1 flame-retardant na GB8624-2012.Ibi bikoresho ngengabuzima bikoreshwa cyane cyane mubice byububiko bubika ingufu, ububiko bunini bukonje hamwe nubukonje bukonje.Irashobora kandi gukoreshwa mugukumira umuriro hamwe nubushyuhe bwumuriro mubihingwa nganda, amato, ibinyabiziga, kubaka amazi meza nizindi nzego nyinshi.

Icya kabiri: Umwotsi ukwirakwira vuba nyuma yumuriro nibikoresho bya PU ni uburozi.

Habayeho impaka nyinshi kubyerekeye uburozi bwa polyurethane, cyane cyane iyo impanuka nkibikoresho bya PU byatwitse.Kugeza ubu, polyurethane yakize izwi cyane nkibikoresho bidafite uburozi, kandi bimwe mubikoresho byubuvuzi PU byakoreshejwe mubikoresho byubuvuzi byatewe.Ariko polyurethane idakize irashobora kuba uburozi.Rigid PU ifuro ni ubwoko bwibikoresho bya termosetting.Iyo itwitswe, hejuru ya karubonike iba hejuru yacyo, kandi karubone irashobora kubuza urumuri gukwirakwira.EPS na XPS nibikoresho bya termoplastique bizashonga kandi bitonyanga mugihe uhuye numuriro, kandi ibitonyanga nabyo birashobora gutwikwa.

Umuriro ntuterwa gusa nibikoresho byo kubika.Inyubako zigomba gufatwa nka sisitemu.Imikorere yumuriro wa sisitemu yose ifitanye isano nibintu bitandukanye nko gucunga ubwubatsi no kubungabunga buri munsi.Nta kamaro gake gushimangira buhumyi urwego rwa flame retardant urwego rwibikoresho.“Mu byukuri, ibikoresho ubwabyo ni byiza.Icyangombwa ni ugukoresha neza kandi neza. ”Nko mu myaka myinshi ishize, Li Jianbo, umunyamabanga mukuru wungirije w’ishyirahamwe ry’inganda Polyurethane mu Bushinwa, yari yarashimangiye inshuro nyinshi ibibazo bisa mu mahuriro n’amahugurwa atandukanye.Imicungire y’imyubakire y’akajagari no kugenzura nabi ibicuruzwa bitujuje ibyangombwa kandi bitujuje ibisabwa nibyo bintu nyamukuru bitera inkongi y'umuriro, kandi ntidukwiye gutunga urutoki ibikoresho mugihe habaye ikibazo.Na n'ubu rero, ikibazo kiracyahari.Buhumyi bamenyekanye nkikibazo cyibikoresho bya PU, umwanzuro urashobora kuba uruhande rumwe.

Itangazo: Ingingo yavuzwe kuri https://mp.weixin.qq.com/s/8_kg6ImpgwKm3y31QN9k2w (ihuza umugereka).Gusa kubijyanye no gutumanaho no kwiga, ntugakore izindi ntego zubucuruzi, ntabwo uhagarariye ibitekerezo nibitekerezo byikigo, niba ukeneye gusubiramo, nyamuneka hamagara umwanditsi wambere, niba hari ihohoterwa, nyamuneka twandikire ako kanya kugirango dusibe gutunganya.