Semutengesi anotungamira we polyurethane catalysts, tinofara kuratidza basa guru rinoitwa ne catalysts idzi mukugadzirwa kwe polyurethane foam, chinhu chinoshandiswa zvakasiyana-siyana mumaindasitiri akasiyana-siyana. Zvigadzirwa zvedu, zvinosanganisira MXC-A33, MXC-T nezvimwe zvakasiyana-siyana zve catalysts, chikamu chakakosha chemaitiro ekugadzira polyurethane foam, zvichivimbisa mashandiro anoshanda uye mhedzisiro inoshanda zvakanyanya.
Magadzirirwo Anoitwa Foam yePolyurethane
Foam yepolyurethane inogadzirwa kuburikidza nekuita kwemakemikari pakati pe diisocyanates nema polyols, ese ari maviri anobva mumafuta asina kucheneswa, kunyange zvazvo ma polyols anogonawo kugadzirwa kubva mumafuta echisikigo anogadziriswazve. Kuita uku kunoguma neketani yepolymer inoumba chimiro chikuru chefoam. Kugadzirwa kwefoam yepolyurethane kunosanganisira zvikamu zvitanhatu zvikuru:
- Polyols: Chivako chikuru chefuro, chichiita ma diisocyanates.
- Diisocyanates: Zvinoita kuti zvinhu zvikuru zvisanganiswe nemapolyols kuti zvigadzire furo.
- Zvishandiso zvefuro: Izvi zvinobatsira kuumba chimiro chemasero efuro.
- Zvinoshandisa ma surfactants: Gadzirisa furo panguva yekukura kwaro.
- Zvinokonzera: Kurumidza kuita pakati pemapolyol nemadiisocyanates, zvichiita kuti furo riumbwe zvakanaka.
- Vakaoma: Crosslinkers uye chain extenders zvinoshandiswa kuwedzera kusimba kwefuro uye kushanda zvakanaka.
Kana zvinhu izvi zvikabatanidzwa, zvinoita semakemikari, zvichigadzira kupisa, gasi, uye chimiro chefuro. Zvinhu zvinokatyamadza zvakaita seMXC-A33 yedu neMXC-T zvinoita kuti izvi zviitike, zvichiita kuti pave nemaitiro anodzorwa uye anoshanda.
Mashandisirwo eCatalyst muPolyurethane Foam
Foam yepolyurethane inouya mumhando mbiri huru: yakasimba uye inochinjika. Mashandisirwo ayo anotangira pakuputira zvinhu mukuvaka (rigid foam) kusvika pakushongedza fenicha nemukati memotokari (flexible foam). Zvishandiso zvedu zvakagadzirwa kuti zvienderane nezvinodiwa zvakasiyana-siyana:
-MXC-A33:Chinhu chinobatsira pakugadzira zvinhu chine 33% TEDA (triphenylenediamine) uye 67% DPG (monoconjugated dipropylene glycol), chakagadzirirwa ma polyurethane foams uye polyurethane elastomers. Chinoshandiswa zvakanyanya mu polyurethane foam, coating, uye elastomer yakapfava, yakapfava, yakapfava, uye yakaoma.
-MXC-T:Inoshanda zvakanaka, isina emission amine catalyst inopa reaction curve yakatsetseka uye nekudaro inogona kushandiswa kugadzira mhando dzakasiyana dzepolyurethane foams. Catalytic action yayo inokurudzira reaction ye urea (water-isocyanate), iyo inowanzo sangana ne polymer matrix nekuda kwe active hydroxyl group yayo. Nekuda kweizvi, TMAEA inoshandiswa kupfapfaidza foam insulation, automotive dashboards, nedzimwe nzvimbo dzinoda kunhuhwirira kwakaderera..
Zvinhu zvinogadzira polyurethane zvinoita kuti pave nemhinduro dzakakodzera, hunhu hwefuro hwakanyatsogadziriswa hwakadai sekuwanda, kuomarara, uye kusimba kwechimiro. Kunyatsorongeka uku kunoita kuti furo repolyurethane rikwanise kusangana nezvinodiwa nemaindasitiri emazuva ano, kusanganisira kuvaka, mota, fenicha, uye kurongedza.
Nezvedu
Isu tiri vanotengesa zvinhu zvinogadzira polyurethane catalysts zvine simba, takazvipira kupa mhinduro itsva dzekushandisa mumaindasitiri akasiyana-siyana. Rudzi rwedu rwakakura rwezvigadzirwa runobatsira vagadziri kugadzirisa maitiro ekugadzira furo uku vachisangana nezvinodiwa nenharaunda nemitemo.
Nguva yekutumira: Gumiguru-23-2024