Spray polyurethane foam (SPF) chinhu chinodzivirira kupisa chinoshandiswa zvakanyanya mukuvaka nemamwe maindasitiri kuvaka musono uye inoshanda zvakanaka. Kugadzirwa kweSPF musanganiswa wakaoma wemakemikari, rimwe nerimwe rawo rinoita basa rakakosha mukugadzira furo rine hunhu hwakasiyana hwekudzivirira kupisa, kuchinjika uye kunamira. Semupi wezvigadzirwa zve polyurethane catalyst, tinotarisa pakutsigira maitiro akanakisa uye mashandiro emaSPF systems.
Kuumbwa kwePolyurethane Foam
Mafuro akagadzirwa nepolyurethane ane zvinhu zvakakosha zvinoshanda pamwe chete kugadzira furo rinogara kwenguva refu uye rinoshanda. Zvinhu zvikuru zvefuro repolyurethane zvinosanganisira:
1. Resin yePolyol Base:Iyi resin yakagadzirwa nepolyurethane ndiyo inoumba musimboti wechimiro chefuro, ichipa simba uye kutwasuka. Kazhinji, polyether polyols dzinoshandiswa nekuti dzakasimba, hadzidhuri zvakanyanya, uye dzinoenderana nezvimwe zvikamu zvefuro.
2. Copolymer Polyol Resin (Copolyols):MaCopolyol anowanzo wedzerwa kuti awedzere hunhu hwakasiyana, hwakadai sekuchinjika, kusimba, uye kugadzikana, zvichiita kuti furo rishande zvakanaka mumamiriro akasiyana-siyana.
3.Isocyanate (TDI, TM20, kana MDI):MaIsocyanates akadai seToluene Diisocyanate (TDI), Methylenediphenyl Diisocyanate (MDI), kana mamwe maformula akakosha seTM20 akakosha pakuita kwefuro. Anoshanda nemapolyols kugadzira polyurethane uye kugadzira carbon dioxide, iyo inoumba chimiro chefuro. Chimiro ichi chesero chinopa SPF hunhu hwayo hwekudzivirira kupisa uye hwekuchengetedza.
4. Mvura:MuSPF, mvura inoshanda sechinhu chinofefetera chinopindirana neisocyanate, ichiburitsa gasi recarbon dioxide rinobatsira kuwedzera furo uye kugadzira matrix yaro inochengetedza masero. Kune mamwe mashandisirwo chaiwo, hydrofluoroolefins (HFOs) kana mamwe ma assistant blowing agents anogona kushandiswawo kusangana nekushanda kana mwero wezvakatipoteredza.
5. Zvinokonzera:MaCatalyst anoita basa rakakosha mukudzora kumhanya kwemaitiro emakemikari. MaCatalyst akadai seMXC-TuyeMXC-C15Zvinowanzoshandiswa muSPF, zvichipa mashandiro anodzorwa anoita kuti furo rirambe rakanaka. MXC-T, inozivikanwa nekugona kwayo kupindura zvakanaka, uye MXC-C15, iyo inokurudzira kugadzirwa kweurethane, dzakanakira kushandiswa kweSPF inoshanda zvakanyanya.
6.Zvinoshandiswa pakugadzira ma surfactants:Ma-surfactant anodzora kugadzikana kwefuro, saizi yemasero, uye chimiro chose, zvichiita kuti furo rikure zvakaenzana. Ma-surfactant anoshandiswa nesilicone anowanzo shandiswa nekuda kwekushanda kwawo uye kugadzikana kwawo ne polyurethane formulations.
Basa reCatalysts muSPF
Zvinhu zvinogadzirisa zvinhu zvakaita seMXC-T neMXC-C15 zvakakosha kuti SPF ishande zvakanaka, zvichiita kuti irambe ichipora nekukurumidza, irambe ichinamira zvakanaka, uye kuti ishande zvakanaka. Izvi zvinobatsira kuti furo rirambe richikura uye richishanda zvakanaka, zvichiita kuti SPF ikwanise kugadzira insulation yakasimba uye inochengetedza simba, kudzivirira hunyoro, uye kuti chivakwa chirambe chakasimba.
Iyi nzira yakaenzana inoita kuti SPF ive chinhu chinoshamisa chekudzivirira kupisa chinosangana nezvinodiwa zvekugara, zvemabhizinesi uye zvemaindasitiri. Senyanzvi dze polyurethane catalysts, tinotsigira kugadzirwa kweSPFS dzemhando yepamusoro dzinopa kushanda uye kugara kwenguva refu.
Nguva yekutumira: Mbudzi-12-2024