Basa reGel Catalysts muPolyurethane: Kunzwisisa MXC-T12 (DBTDL) muGelling Reaction

Chii chinonzi Gel Catalyst?

Iyogel chinowedzera simbamu polyurethane chemistry chinhu chinokurumidza kuita pakati peisocyanateuyepolyol, uye polyurethane bonds dzakagadzirwa dzinopa chimiro chekupedzisira chechinhu chacho. Kuita uku kwakakosha mukugadzirwa kwepolyurethane nekuti ndiko kunosarudzahunhu hwemakanikauyekugadzikanayefuro kana kuti coating inobuda. Gel catalyst inokurudzira "cross-linking" kana "hardening" phase, inowanzonzi gelling reaction, pane blowing catalyst inobatsira kuita pakati peisocyanate nemvura, kuburitsa carbon dioxide, uye kuwedzera kwefuro.

Maitiro Ekuita MuGel Catalyst

1. Kushanda kwePolyol neIsocyanate:Zvishandiso zvegel, zvakaita sedibutyltin dilaurate (DBTDL)muMXC-T12, shandisa mapoka ehydroxyl mumapoka epolyol neisocyanate. Izvi zvinoderedza simba rinotadzisa kurwisa kwe nucleophilic kweboka repolyol rehydroxyl pacarbon yeisocyanate.
2. Kuumbwa kweUrethane Linkages:Chinokonzeresa kugadzirwa kweurethane bonds nekukurumidzisa reaction kinetics. Izvi zvinotungamira pakusanganiswa kwepolymer chains, izvo zvinowedzera viscosity uye zvinoomesa zvinhu.
3. Kugadzirisa Kusarudza: DBTDL (MXC-T12)inosarudza kunemaitiro ejeliuye inoita kuti kupora kuve kwakafanana. Hazvikurudzire zvakanyanya mhedzisiro dzakadai se trimerization ye isocyanates, zvichiita kuti chigadzirwa chive nehunhu hwaunoda.

Kushandiswa kweMXC-T12 (DBTDL) seGel Catalyst

MXC-T12 inoshandiswa zvakanyanya mumasisitimu epolyurethane uko kunyatsojeka uye kudzora maitiro egel kwakakosha. Heano mabasa ayo mumamiriro akasiyana ekushandiswa:

1.Furo repfapfaidzo:

MXC-T12 inoita kuti masero akwanise kupora nekukurumidza uye anobatanidza zvinhu zvakafanana mumidziyo yepurasitiki yakavharwa kana yakavhurika.

Inoenzanisa mashandiro ari pakati pekuwedzera (kuvhuvhuta) nekuomesa (gelling), zvichiita kuti furo riwane hunhu hwaunoda hwekuvaka.

2.Mapendi uye Zvinonamira:

Mumachira, MXC-T12 inoita kuti pave nekupenya kwakaenzana, zvichiita kuti pave nepamusoro pakanaka uye pakasimba.

Kune zvinonamatira, zvinovimbisa kubatana kwakasimba nekukurumidzisa gelling reaction kuti pave nekubatana kwakanyanya.

3.Mafuro Akasimba Uye Anochinjika:

Kune furo rakasimba, MXC-T12 inobatsira kuwana kugadzikana kwakasimba uye simba rekumanikidza.

Mumafuro anochinjika, inoita kuti ganda rirambe richigadzikana uye richipfava nekudzora kuumbwa kweurethane.

Maitiro ekuita zvinhu neMXC-T12

1. Chipimo Chishoma, Basa Rakawanda:MXC-T12 inoshanda zvakanaka kana paine huwandu hwakaderera, ichipa kutonga kwakanaka pamusoro pemaitiro ekuita.
2. Kurapa Kwekumashure:MXC-T12 inoita kuti irambe ichipora kunyangwe mushure mechikamu chekutanga chekugadzirisa, zvichibatsira pakugadzikana kwekupisa uye simba remuchina.
3. Kugadzikana kweHydrolytic:Inoramba ichishanda zvakanaka munzvimbo dzine hunyoro, zvichiita kuti ikwanise kushandiswa mumvura kana munyoro.

Muchidimbu,MXC-T12 (DBTDL)inoita basa rakakosha senzira yekuwedzera gel mu polyurethane systems nekubatsira kubatanidza zvinhu nemazvo. Kushanda kwayo zvakanaka uye kusarudza kunoita kuti ive sarudzo yakakura yekushandiswa kunoda kugara kwenguva refu, kugadzikana, uye kushanda nguva dzose, zvakaita sema spray furo, coatings, uye glues.