Mumakore achangopfuura, indasitiri ye polyurethane foam yakaita shanduko huru kuenda kune mhinduro dzinogara kwenguva refu uye dzinochengetedza nharaunda. Pakati padzo, hydrofluorolefin (HFO) blowing agents dzinoonekwa seimwe nzira huru, kunyanya muma closed-cell spray foams. HFO foam agents dziri kushandiswa zvakanyanya senzira inochengetedza nharaunda panzvimbo pe hydrofluorocarbon (HFC) foam agents mu polyurethane spray foam.
Kunzwisisa HFO Foam Agents
HFO, kana kuti hydrofluorolefin, chinhu chinoumbwa nemaatomu ehydrogen, fluorine, uye kabhoni akafanana neHFCS asi chine chimiro chakasiyana chinoderedza kukanganisa kwezvakatipoteredza. Kusiyana neHFC, HFO haina mukana wekudzikisa ozone (ODP) uye mukana wekudzikisa kupisa kwepasi rose (GWP). HFO haina mukana mudiki pakudzikisa kupisa kwepasi rose nekuda kwehupenyu hwayo hupfupi hwemhepo, zvichiita kuti ive sarudzo yefuro respray rine hushamwari kune zvakatipoteredza. Nekubatanidza HFO foaming agents mukugadzira furo respray, vagadziri nevashandisi vekupedzisira vanogona kutsigira nharaunda ine hutano uye kutevedzera mitemo yepasi rose yakanangana nekuderedza kusvibiswa kunokuvadza.
Mabhenefiti Akakosha eHFO muSpray Foams
Kuwedzera kune GWP yavo yakaderera uye ODP isina zero, maHFO anopa mamwe maitiro anobatsira:
- Kufambiswa Kwemagetsi Kwakaderera:Izvi zvinoita kuti mafoam espray akavakirwa paHFO akwanise kushandiswa munzvimbo dzinodzivirira kupisa dziri pedyo nemidziyo yemagetsi newaya.
- Kusapisa:Mafuro eHFO haabatike, zvichiwedzera kuchengetedzeka kwezvivako zvinoshandisa insulation iyi.
- Haisi Chepfu uye Kusagadzikana Kwakaderera:Mishonga inofema yeHFO haina makemikari anonyungudika (VOCs), izvo zvinobatsira kuvandudza kunaka kwemhepo mumba uye zvinoderedza njodzi dzehutano dzinoenderana nekubviswa kwegasi nemakemikari.
- Kutevedzera Mitemo Yezvakatipoteredza:Mahofisi ekuchengetedza nharaunda anotevedzera mitemo yakaoma yezvakatipoteredza, zvichiita kuti ave sarudzo inosarudzwa mukuvaka kwakasimba.
Zvigadziriso zvePolyurethanemuHFO-Based Spray Foams
Zvinhu zvinokonzeresa polyurethaneDzinobatsira zvikuru mukuvandudza mashandiro uye kushanda zvakanaka kwemafuro emvura anopfapfaidzwa eHFO. Dzinobatsira kudzora mwero wekuita pakati peisocyanate nemapolyol, zvichiita kuti furo riporeswe nemazvo uye riwane density inodiwa uye insulating properties. MaCatalysts anoshandiswa neHFO anowanzo sarudzwa nekuda kwekushanda kwawo nema low-emission blowing agents, zvichikonzera kubatana kunoshanda, kukurumidza kupora, uye kugadzikana kwenguva refu kwechimiro.
Mhedziso
Sevatengesi vezvinhu zvinogadzira polyurethane catalysts, tinoziva kukosha kwekutsigira kufambira mberi kusingakuvadzi nharaunda. Kushandisa zvinhu zvinogadzira furo reHFO muma spray foams hakungoenderane nezvinangwa zvepasi rose zvekuchengetedza nharaunda asiwo kunovandudza mashandiro ayo ma HFC foams echinyakare asingakwanise kupa. Nekushandura kushandisa HFO-based spray foams uye optimized catalyst systems, maindasitiri anogona kuderedza zvakanyanya kusimba kwawo kwezvakatipoteredza uku achisangana nemazinga epamusoro ekudzivirira nharaunda uye kugara kwenguva refu.
Nguva yekutumira: Mbudzi-11-2024