Mafuro anochinjika epolyurethane zvinhu zvinoshandiswa zvakasiyana-siyana mukushandiswa kwakasiyana-siyana, kubva pakuisa fenicha pamipendero kusvika pakugara mumotokari. Kushanda kwemafuro aya kunokanganiswa zvakanyanya nesarudzo yemacatalysts, ayo anodzora maitiro makuru emakemikari panguva yekuumbwa kwefuro. Pakati pemaitiro akakosha anobatanidzwa pane gelation reaction (kuumbwa kwecarbamates) uye furo reaction (kuita pakati pemvura neisocyanates, zvichigadzira urea negasi). Maitiro aya anofanira kuenzaniswa zvakanaka kuti agadzire chimiro chefuro chinodiwa, chingave chesero rakavhurika kana chesero rakavharika.
Chinogadzirisa Mafuro Anochinjika:MXC-A1 (BDMAEE)
MXC-A1, inozivikanwawo seN,N,N',N'-tetramethyl-2,2′-oxybis(ethylamine), ndeimwe yemishonga inoshanda zvikuru yetertiary amine catalysts inoshandiswa mukugadzira furo rinochinjika repolyurethane. Imvura isina ruvara kusvika yeyero zvishoma ine basa guru rekugadzira furo uye sarudzo yekubvisa furo.MXC-A1inonyanya kukurudzira reaction yeurea (water-isocyanate reaction), iyo inokosha pakugadzira furo repolyurethane rakapfava uye rakaoma.
Maitiro makuru ekugadzira furo anogona kupatsanurwa muzvikamu zvinotevera:
- Maitiro eGelation:Kuumbwa kwemacarbamates nekuita ma isocyanates ne hydroxyl (-OH) groups muma polyols.
- Kuita Kwekupupuma:Kuita kwema isocyanates nemvura, zvichikonzera kuumbwa kwema urea negasi mabubbles anowedzera chimiro chefuro.
Kuenzanisa Kugadzikana Kwemafuta uye Kuchinja Kwemafuta
Kubudirira kwechimiro chefuro rinochinjika—ingava rakavhurika (rinobvumira kufamba kwemhepo) kana kuti rakavharika (rinopa insulation iri nani)—kunoenderana nechiyero chiri pakati pegelation rate uye chiyero chekuwedzera kwegasi. Kuenzana uku kunodzorwa nekugadzirisa mhando nehuwandu hwema catalysts uye foam stabilizers muchimiro.
MXC-A1 inonyanya kukodzera kushandiswa kwefoam yakasimba (HR) uye reaction injection molding (RIM) nekuda kwekugona kwayo kukurumidzisa foam reaction uku ichiramba ichidzora zvakakwana maitiro e gelation. Nekudzora huwandu hwe catalyst, vagadziri vanogona kugadzirisa kuenzana pakati pekuumbwa kwegasi uye kusimba kwechimiro chefoam.
Mashandisirwo eMXC-A1 muFlexible Foam
MXC-A1 ine mashandisirwo akawanda mukugadzira mhando dzese dzemafuro epolyurethane, kunyangwe kushanda kwayo kwakanyanya uye kushanda zvakanaka kunoita kuti ive yakakodzera zvigadzirwa zvefuro rakapfava. Mumafuro akasimba, akadai seaya anoshandiswa muzvigaro zvemotokari nemacushion efenicha, MXC-A1 inoita kuti masero acho ave akafanana uye inowedzera kugara kwenguva refu uye kunyaradzwa kwefuro. Inoshandiswawo zvakanyanya muzvigadzirwa zveRIM uko mafuro anochinjika anoda kusangana nezvinodiwa zvemakanika uye zvemuviri.
Mukupedzisa, zvinhu zvinogadzira furo zvakaita seMXC-A1 zvine basa guru mukuita kuti furo rishande zvakanaka. Nekukurudzira kuti furo rishande zvakanaka uye rishande zvakanaka, zvinobvumira vagadziri kugadzirisa chimiro chefuro, kusimba kwaro, uye kugadzikana kwaro zvichienderana nezvinodiwa pakushandisa.
Nguva yekutumira: Ndira-13-2025