N,N,N',N'-Tetramethylethylenediamine (BDMAEE)** mushonga unoshandiswa zvakanyanyapolyurethane catalystinozivikanwa nekushanda kwayo nesimba uye kushanda kwayo mukugadzira mhando dzakasiyana dzemafuro epolyurethane. Iyi organic compound, ine molecular formula C6H16N2, inoita basa rakakosha mukugadzira mafuro epolyurethane akapfava, anowanzo shandiswa mufenicha, magumbeze, zvigaro zvemotokari, nezvimwe zvinoshandiswa pakunyaradzwa.
Hunhu hweBDMAEE
1. Kushanda Nesimba: BDMAEE imushonga unoshanda zvikuru weamine catalyst, zvichiita kuti pave nekuita pakati peisocyanates nepolyols kuti pave nepolyurethane. Kusimba kwayo kukurumidzisa kugadzirwa kwepolyurethane, zvichiita kuti pave nekuita nekukurumidza uye kwakakwana.
2. Kuenderana: BDMAEE inoenderana nemhando dzakasiyana dzepolyurethane. Inogona kushandiswa pamwe chete nezvimwe zvinhu zvinokonzeresa kugadziridza hunhu hwefuro, hwakadai sekuwanda, kuomarara, uye kusimba.
3. Kusagadzikana: Chinobatidza ichi chine poindi shoma yekufashaira, izvo zvinoita kuti chikwanise kushandiswa chinoda nguva yekupora nekukurumidza. Zvisinei, kusagadzikana uku kunodawo kubatwa nokungwarira kuderedza kusvibiswa kwemhepo uye kuve nechokwadi chekuti kuchengetedzeka panguva yekugadzira.
4. Kugadzikana kweHydrolytic: BDMAEE inozivikanwa nekugadzikana kwayo kwehydrolytic, zvinoreva kuti inoramba ichishanda kunyangwe paine hunyoro. Hunhu uhwu hunobatsira zvikuru munzvimbo dzinogadzirwa hunyoro kana munzvimbo dzinoshandiswa furo rinogona kubatwa nehunyoro.
Nheyo yeKushandisaBDMAEEmuFoam Yakapfava
Kugadzirwa kwefuro rakapfava repolyurethane kunosanganisira kuenzana kwakanaka kwemakemikari uye mashandiro emuviri. BDMAEE inoita basa guru mukuzadzisa hunhu hwefuro hunodiwa kuburikidza nenzira dzinotevera:
1. Kugadzirisa Majekiseni: BDMAEE inokonzera maitiro ekugadzira majekiseni pakati pezvinhu zve polyol ne isocyanate. Maitiro aya anoumba urethane linkages iyo inopa chimiro chefuro. Mwero wekuita majekiseni unokanganisa zvakananga chimiro chesero refuro, huwandu, uye hunhu hwemakanika.
2. Kufemera: Pamusoro pekuita kwegelling, BDMAEE inokonzeresawo kuita kwefemera, uko mvura inosangana neisocyanate kuti ibudise gasi recarbon dioxide. Gasi iri rinoumba mabubbles mukati mepolymer matrix, zvichigadzira chimiro chemasero efoam. Kuenzana pakati pekuita kwefemera nefemera, kunokonzereswa neBDMAEE, kwakakosha kuti pave nechimiro chemasero chakafanana uye hunyoro hunodikanwa.
3. Kugadzirisa Hunhu HweFoam: Nekugadzirisa huwandu hweBDMAEE, vagadziri vanogona kudzora huwandu hwemhinduro, izvo zvinozokanganisa huwandu hwefoam, kusimba kwayo, uye kusimba kwayo. Semuenzaniso, huwandu hwakawanda hweBDMAEE hunogona kutungamira munguva yekupora nekukurumidza uye maumbirwo emasero akapfava, nepo huwandu hwakaderera hunogona kugadzira furo rakapfava uye rakapfava.
4. Kugadzikana uye Kugara Kwakafanana: Kugadzikana kwehydrolytic kweBDMAEE kunoita kuti furo rishande zvakanaka mumhando dzakasiyana dzefuro. Kuvimbika uku kwakakosha pakugadzirwa kukuru uko kufanana kwehunhu hwefuro kwakakosha pakushandiswa kwekupedzisira.
Mhedziso
BDMAEE chinhu chakakosha mukugadzirwa kwefuro rakapfava repolyurethane, zvichipa kushanda zvakanaka, kuenderana, uye kugadzikana. Kugona kwayo kuenzana kwekuita kwegelling nekuputika kunobvumira vagadziri kugadzira furo remhando yepamusoro rine hunhu hwakasiyana hwakagadzirirwa mashandisirwo akasiyana-siyana. Kunzwisisa hunhu uye misimboti yekushandisa yeBDMAEE kunobatsira mukuvandudza maitiro ekugadzira furo, zvichiita kuti zvigadzirwa zvekupedzisira zvishande zvakanaka.
Nguva yekutumira: Chikunguru-08-2024