Zvishandiso zvepolyurethane zvinoita basa guru mukugadzirwa kwezvinhu zvepolyurethane, izvo zvinoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana nekuda kwekushanda kwazvo uye kugona. Zvishandiso izvi zvinokurumidzisa makemikari ari pakati pemapolyol nemaisocyanates kuti zvigadzire mapolyurethane foam, coatings, elastomers, adhesives, uye sealants. Kusarudzwa kwezvishandiso zvinokanganisa kwete chete reaction rate asiwo hunhu hwekupedzisira hwechigadzirwa chepolyurethane, zvichiita kuti ive chinhu chakakosha mukugadzira mafoam emhando yepamusoro.
Mhando dzePolyurethane Catalysts
Zvishandiso zvepolyurethane zvinogona kupatsanurwa muzvikamu zviviri zvikuru:zvinokonzeresa zvinobva kumaamineuyezvinokonzeresa zvakagadzirwa nesimbi.
- Zvinokonzera Amine
MaAmine catalysts anoshandiswa zvakanyanya mukugadzira furo repolyurethane. Anokurudzira kuvhuvhuta uye kuita gelling reactions. Zvimwe zvemaAmine catalysts zvakajairika zvinosanganisira:- MaAmine epamusoro: Izvi zvinosimudzira kuvhuvhuta, izvo zvinogadzira chimiro chemasero efuro. Mienzaniso inosanganisira MXC-37 (CAS 1704-62-7), iyo inoshandiswa mu ester-based stabilizer soft foams uye microcellular foams.
- Kufuridza macatalyst: Izvi zvinobatsira kudzora furo rinobuda, kunyanya kana mvura ikashandiswa pamwe chete, sezvinoonekwa muMXC-R40.
- Zvinokonzera kucheneswa kwemafuta: Zvishandiso zvemaamine zvakagadzirwa neMXC-TMA zvinokurudzira kuumbwa kwepolyisocyanurates, izvo zvakakosha mukugadzirwa kwemafuro akaomarara ane simba rekudzivirira moto.
- Zvinokonzera Simbi
Zvishandiso zvesimbi zvinowanzo shandiswa kuwedzera maitiro ekugadzira gelling, zvichiita kuti furo rive rakanaka. Zvinhu zvinoshandisa simbi zvinosanganisira:- Zvinokonzera simba zvakagadzirwa netin: MXC-T12, inozivikanwawo se dibutyltin dilaurate (CAS 1185-81-5), inoshandiswa zvakanyanya nekuda kwekugona kwayo kuvandudza nguva isingabatike uye hunhu hwemakanika mufoam inochinjika uye yakasimba.
- Dzimwe nzira dzisiri dzesimbi: Mukupindura kunetseka kwezvakatipoteredza, zvinhu zvinokonzeresa simbi zvisina tin zvakaita seMXC-B20, zvinotsiva mercury uye zvinhu zvinokonzeresa simbi zvine lead, zvave kufarirwa. Izvi zvinonyanya kukodzera kushandiswa kwefuro rinochinjika uye re microcellular, zvichipa kunonoka kwekusimba uye kupora kwakanaka pasina kusvibisa kunokuvadza.
Mabasa Akakosha ePolyurethane Catalysts
Zvishandiso zvepolyurethane zvinonyanya kukonzera maitiro maviri panguva yekuumbwa kwefuro:kuvhuvhuta kwemhepouyemaitiro e gelling.
- Kurwisa Kupindura: Uku kuumbwa kwemabubble egasi mukati memusanganiswa wekuita, zvichigadzira chimiro chemasero efuro chakavhurika kana chakavharwa. Macatalyst anokurumidza kufefetera anoita kuti masero awedzere kukura zvakanaka uye agadzireke.
- Maitiro eGelling: Uku ndiko kuita pakati pemapolyol nemaisocyanates, zvichigadzira musana wepolymer wepolyurethane. Zvishandiso zvesimbi zvakaita seMXC-41 neMXC-15 zvinoshanda zvikuru mukusimudzira kuita uku, zvichikonzera kuti pave nechimiro chefuro chakasimba uye chinogara kwenguva refu.
Mashandisirwo ePolyurethane Catalysts
Mhando chaiyo ye polyurethane catalyst inoshandiswa inogona kusiyana zvichienderana nehunhu hwaunoda hwechigadzirwa chekupedzisira chefuro. Heano mamwe mashandisirwo akajairika:
- Mafuro Anochinjika
Mafuro epolyurethane anochinjika anoshandiswa mufenicha, matiresi, uye mukati memotokari. Macatalyst akadai seMXC-37 neMXC-R40 akagadzirwa kuti aenzane nekubhururuka uye kuita gelling reactions, zvichiita kuti furo rive nekusimba kwakakodzera, kupfava, uye kugara kwenguva refu. - Mafuro Akasimba
Mafuro epolyurethane akasimba anoshandiswa sechinodzivirira kupisa mukuvaka nemidziyo yemagetsi. MaCatalyst akadai seMXC-15 neMXC-41 akanakira kugadzira mafuro ane chimiro chakasimba uye hunhu hwakanaka hwekudzivirira kupisa, anoshandiswa zvakanyanya mumafuro espray nemapaneru. - Mafuro Akakosha
Mamwe macatalyst epolyurethane, akadai seMXC-TMA, anoshandiswa mukugadzira mafoam epolyisocyanurate (PIR). Mafoam ePIR ane simba rekudzivirira moto uye kugadzikana kwekupisa, zvichiita kuti akwanise kushandiswa mukudzivirira kupisa kwepamusoro-soro. - Zvikamu zveMotokari
Indasitiri yemotokari inoshandisa ma polyurethane furo mumadhibhodhi, macushion ezvigaro, uye mapaneru emukati. Macatalyst akadai seMXC-T9, ane simba rayo guru uye hunhu hwayo hushoma hwemunhuwi, akakodzera kushandiswa uku.
Kufunga Nezvezvakatipoteredza uye Mutemo
Sezvo kunetseka nezvezvakatipoteredza kuri kuwedzera, kudiwa kwekuburitsa hutsi hwakaderera, kunhuhwirira kushomamacatalyst epolyurethane. Macatalyst asina utsi akadai seMXC-37 neMXC-B20 ari kuwedzera kufarirwa nekuda kwekukwanisa kwawo kuderedza kuburitswa kwemhepo inoputika (VOC) uku achiramba achishanda zvakanaka. Pamusoro pezvo, macatalyst asiri etin ari kuwana simba sezvo masangano anotonga achiisa mitemo yakaoma pakushandiswa kwesimbi dzinorema mukugadzira furo.
Mhedziso
Zvishandiso zvepolyurethane catalysts ndizvo zvinozivikanwa zvikuru pakusimbaradza uye kunaka kwemafuro epolyurethane nezvimwe zvigadzirwa. Kugona kwavo kudzora nekugadzirisa maitiro ekuita kwakakosha pakuona kuti vagadziri vanosangana nezvinodiwa neindasitiri zvezvigadzirwa zvinoshanda zvakanyanya, zvinogara kwenguva refu, uye zvine hushamwari kune zvakatipoteredza. Nekufambira mberi kuri kuitwa muhunyanzvi hwekugadzira zvinhu, indasitiri yepolyurethane yakagadzirira kuramba iine hunyanzvi uye kugara kwenguva refu mumakore anotevera.
Nguva yekutumira: Ndira-15-2025