Mafuro ePolyurethane (PU) anoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana nekuda kwehunhu hwawo hwakasiyana-siyana, hwakadai sekuputira, kufukidza, uye kusimba kwechimiro. Kushanda kwemafuro aya kunonyanya kuenderana nerudzi rwefuro riri kugadzirwa, kungave riri remaseru akavhurika kana kuti remaseru akavharika, uye sisitimu ye catalytic inoshandiswa kudzora reaction kinetics panguva yekuumbwa kwefuro.Zvinhu zvinokonzeresa polyurethaneinoita basa guru mukugadzirisa zviyero zvemasero akavhurika kuenda kumasero akavharika, ichiva nechokwadi chekuti furo rinosangana nezvinodiwa zvekushandisa. Chinyorwa chino chinoongorora mhedzisiro ye polyurethane catalysts pamhando dzakasiyana dzemafuro e polyurethane uye kuti ma catalysts akaita seMXC-DPA anogona kushandiswa sei kugadzirisa hunhu hwefuro.
Mhando dzePolyurethane Foams
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Mafuro Akavhurika Masero:
- Mafuro emasero akavhurika ane chimiro apo masero kana mabhuru ari mukati mefuro akabatana, zvichibvumira mhepo kuyerera nepakati pawo. Mafuro aya akareruka, ane hunhu hwakanaka hwekupinza ruzha, uye anoshandiswa zvakanyanya mukudzivirira ruzha, kufukidza, uye kunyaradza.
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Mafuro Emasero Akavharwa:
- Kusiyana neizvi, furo remasero akavharwa rine masero akaparadzana akazadzwa negasi, zvichiita kuti ave akaomarara, akasimba, uye ane hunhu hwakanaka hwekudzivirira kupisa. Anowanzo shandiswa muzvinhu zvakaita semapaneru ekudzivirira kupisa, kuputira furo respray, uye kurongedza uko simba, kuramba hunyoro, uye kuputira kupisa zvakakosha.
Basa reCatalysts mukugadzira Foam
MaCatalyst akakosha mukugadzirwa kwefuro repolyurethane sezvo achikurumidzisa mashandiro ari pakati pemapolyol nemaisocyanates, zvichiita kuti urethane neurea linkages zviite nyore. Rudzi uye huwandu hwemaCatalysts hunosarudza mwero wemaitiro maviri makuru:
- Maitiro eGelation: Kuita uku kunotungamira pakuumbwa kwecheni dzepolymer dzinopa furo chimiro charo chechimiro.
- Maitiro Anoshamisa: Kuita uku kunogadzira maburi egasi anogadzira chimiro chesero refuro, ringave rakavhurika kana kuti rakavharika.
Nekugadzirisa kuenzana kuripo pakati pemaitiro maviri aya, ma catalyst anogona kukanganisa chimiro chemasero, huwandu hwefuro, uye hunhu hwemakanika, nokudaro zvichikanganisa kana furo racho richava nechimiro chemasero akavhurika kana kuti akavharika.
Zvishandiso zveMafuro Emasero Akavhurika uye Akavharwa
Mumafuro emasero akavhurika, zvakakosha kushandisa macatalyst anobvumira gelation yakakwana ukuwo uchiita kuti reaction inoputika igadzire chimiro chemasero chine maburi uye chakabatana. Macatalyst ane simba rakanaka pa gelation uye furo anoita kuti furo risanyanye kuomarara uye anochengetedza kuchinjika uye hunhu hwekubata ruzha. Mumafuro emasero akavharika, gelation inokurumidza inowanzodiwa kuti ibate gasi mukati memasero, zvichikonzera chimiro chakasimba, chinodzivirira kupisa.
Zvinhu zvinokonzeresa polyurethane zvakaita seMXC-DPA(N-(3-dimethylaminopropyl)-N,N'-diisopropanolamine, CAS 63469-23-8) dzakakodzera zvakanyanya kushandiswa kunoda kudzora kwakaringana pamusoro pemaitiro aya. MXC-DPA chinhu chinobatsira kuburitsa utsi hushoma chinopagelation yakanaka uye kuyerera kwemvura, zvichiita kuti ive yakanaka pakudzora marongerwo emasero uye kuumbwa kwefuro mumafuro emasero akavhurika nemasero akavharika.
MXC-DPAmuZvishandiso zveFoam yeOpen-Cell neClosed-Cell
IyoMXC-DPACatalyst inonyanya kushandiswa mu ether-based stabilizers dzefuro rakapfava, furo rakaumbwa rine simba repamusoro (HR), furo re microcellular, elastomers, uye furo rakapfava rekuisa. Kubuda kwakaderera, pamwe chete nefuro rayogelation yakanaka uye kuyerera kwemvura, ita kuti ive sarudzo inoshandisika pakugadzirisa chimiro chemasero efoam.
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Mafuro Akavhurika Masero:
- Mumashandisirwo akaita seHR molded soft foam uye microcellular foam, MXC-DPA inowedzera gelation yefuro uku ichibvumira kukura kwakadzorwa kwemasero efuro. Izvi zvinoguma nemafuro akapfava, anochinjika ane maumbirwo emasero akavhurika, ayo akakosha kumashandisirwo anoda kufema zvakanaka, kunyaradzwa, uye kunyudzwa kweruzha.
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Mafuro Emasero Akavharwa:
- Kune mafoam ane masero akavharwa, akadai seaya anoshandiswa mukushandisa mapurasitiki akaomarara, MXC-DPA inobatsira kuwana huwandu hwefoam hunodiwa uye kuomarara nekukurudzira kukurumidza kuyerera, kubata gasi mukati memasero uye kugadzira chipingamupinyi chakasimba, chinodzivirira. Kuyerera kwayo kunoita kuti furo izadze mapundu zvakaenzana, zvichiita kuti ive yakakodzera kushandiswa kunoda kurongeka kwehukuru uye simba rechimiro.
Kugadzirisa Mashandisirwo Emasero Akavhurika Nemasero Akavharika NemaCatalysts
Mafomu epolyurethane anogona kugadziriswa nekugadzirisa mhando dze catalyst uye dosages, zvichikanganisa kuenzana pakati pehuwandu hwemasero akavhurika nemasero akavharika.MXC-DPAinonyanya kushanda pakupa maformulator mukana wekugadzirisa hunhu hwefuro nekudzora mwero wekuita kwezvikamu zvepolyol neisocyanate.
Semuenzaniso, kuwedzera huwandu hweMXC-DPA kunogona kukurumidzisa gelation reaction, zvichikurudzira kuumbwa kwemasero akawanda akavharwa uye zvichikonzera furo rakaoma uye rakaoma. Kusiyana neizvi, kuderedza huwandu hwe catalyst kana kuisanganisa ne blowing catalyst kunogona kutungamira kune akawanda ma open-cell structures, zvichigadzira furo rakapfava uye rine maburi akawanda.
Mhedziso
Zvishandiso zvepolyurethane zvinoita basa rakakosha pakuona hunhu hwekupedzisira hwemafuro epolyurethane nekudzora kuenzana pakati pekuchinja kweganda uye kufefetera. Ingave yefuro remasero akavhurika anoshandiswa mukudzivirira ruzha uye kunyaradza kana furo remasero akavharika akagadzirirwa kudzivirira kutonhora nekurongedza, zvishandiso zvakaita seMXC-DPAVanopa vagadziri mukana wekugadzirisa hunhu hwefuro kuti huenderane nezvinodiwa zvekushanda.
Sechinoburitsa hutsi hushoma uye chinoburitsa hutsi hwakanyanya, MXC-DPA yakakodzera mafoam epolyurethane akavhurika neakavharika, zvichiita kuti ive chishandiso chakakosha kune vanogadzira foam vari kutsvaga kushanda zvakanaka mumashandisirwo akasiyana-siyana. Nekugadzirisa huwandu hwemafoam, vagadziri vanogona kudzora huwandu hwemafoam akavhurika neakavharika, vachipa mhinduro dzakagadzirirwa maindasitiri kubva kumotokari kusvika kuvaka nekurongedza.
Nguva yekutumira: Ndira-14-2025