Polyurethane yakapfava foam yakatevedzana zvigadzirwa zvinonyanya zvinosanganisira block, inoenderera, chipanje, yakakwira resilience foam (HR), furo reganda, furo rinononoka, furo remicroporous uye semi-rigid-simba rinotora furo.Rudzi urwu rwefuro ruchiri kuita 50% yehuwandu hwe polyurethane chigadzirwa.Kune zvakasiyana-siyana zvezvigadzirwa uye huwandu hwekushandisa huri kuramba huchiwedzera, uye vakabatikana mune dzakasiyana siyana hupfumi hwenyika: midziyo yemumba, mota, kuvandudzwa kwemba, fenicha, zvitima, ngarava, aerospace uye mamwe akawanda minda.Kubva pakatanga PU nyoro furo muma1950, kunyanya mushure mekupinda muzana ramakore rechi21, tekinoroji, akasiyana, uye kubuda kwechigadzirwa zvese zvakasvetuka.Zvinonyanya kukosha zvinosanganisira: zvakatipoteredza PU nyoro furo, kureva girini polyurethane zvigadzirwa;yakaderera VOC kukosha PU nyoro furo;yakaderera atomization PU nyoro furo;mvura yakazara PU nyoro furo;yakazara MDI yakatevedzana furo rakapfava;murazvo unodzoreredza, utsi hwakaderera, yakazara MDI yakatevedzana furo;Zvitsva zvekuwedzera senge reactive polymer catalysts, stabilizers, flame retardants uye antioxidants;polyols ine yakaderera unsaturation uye yakaderera monoalcohol content;Ultra-yakaderera density PU inochinjika furo ine yakanakisa yemuviri zvimiro;low resonance frequency, Low-transfer PU nyoro furo;polycarbonate diol, polye-caprolactone polyol, polybutadiene diol, polytetrahydrofuran uye mamwe ma polyols anokosha;tekinoroji yeCO2 inopupuma tekinoroji, tekinoroji yakaipa yekupupa tekinoroji, nezvimwewo. Muchidimbu, kubuda kwemhando nyowani uye matekinoroji matsva kwakakurudzira kuenderera mberi kwePU nyoro furo.
Furo musimboti
Kuti ugadzire iyo yakanakira PU furo rakapfava rinosangana nezvinodiwa, zvinodikanwa kuti unzwisise iyo kemikari yekuita musimboti wefoam system kuitira kuti usarudze akakodzera makuru uye anobatsira zvinhu mbishi uye maitiro ekugadzira.Kusimukira kweindasitiri yepolyurethane haichisiri nhanho yekutevedzera, asi inowanikwa kuburikidza neyakaomeswa chimiro uye synthesis maitiro zvichienderana nekuita kwekuita kwechigadzirwa chekupedzisira.Polyurethane furo rinotora chikamu mukuchinja kwemakemikari panguva yekugadzira, uye zvinhu zvinokanganisa zvimiro zvefuro zvakaoma, kwete chete zvinosanganisira kemikari yekuita isocyanate, polyether (ester) doro nemvura, asiwo iyo colloid chemistry yekupupa.Kuita kwemakemikari kunosanganisira kuwedzera kweketani, kupupa uye kuyambuka-yakabatana.Izvo zvinokanganisawo chimiro, basa uye uremu hwemamorekuru ezvinhu zvinosanganisirwa mukuita.Iyo general reaction ye synthesis ye polyurethane foam inogona kuratidzwa neinotevera fomula:
Nguva yekutumira: Sep-06-2022