Desmodur RE, yomwe imadziwikanso kuti CAS 2422-91-5, ndi yosunthika komanso yogwiritsidwa ntchito kwambiri. Chifukwa cha ntchito zake zabwino komanso zabwino, zakhala zikugwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana. Munkhaniyi, tikuwunika momwe Desmodur amagwiritsidwira ntchito ndikupeza chifukwa chake imatchuka kwambiri ndi opanga.
Desmodur RE ndi m'gulu la ma diisocyanates onunkhira, omwe amagwiritsidwa ntchito kwambiri popanga zokutira za polyurethane, zomatira ndi zomata. Ndi madzi amadzimadzi opepuka achikasu kupita ku amber opangidwa ndi kusakaniza kwa ma isomers okhala ndi mankhwala ofanana. Chofunikira chachikulu cha Desmodur RE ndi toluene diisocyanate (TDI), yomwe imagwiritsidwa ntchito kwambiri popanga thovu la polyurethane.
Chimodzi mwazogwiritsa ntchito kwambiriDesmodur REndi kupanga zokutira polyurethane. Zovala za polyurethane zimapereka chitetezo chabwino ku dzimbiri, nyengo ndi abrasion. Amadziwika kuti ndi olimba kwambiri komanso amachita bwino kwambiri m'malo ovuta. Desmodur RE ndi gawo lofunikira pamapangidwe awa opaka, kuwapatsa kulimba, kumamatira komanso kukana mankhwala.
Ntchito ina yofunika ya Desmodur RE ndikupanga zomatira za polyurethane. Zomatira za polyurethane zimagwiritsidwa ntchito kwambiri m'mafakitale amagalimoto, zomangamanga ndi mipando chifukwa champhamvu komanso kusinthasintha kwawo. Desmodur RE imathandizira kulimba kwa zomatira za polyurethane, kuwalola kuti azitsatira magawo osiyanasiyana monga zitsulo, pulasitiki ndi matabwa. Izi zimawapangitsa kukhala abwino kwa lamination, kugwirizana ndi kusindikiza ntchito.
Desmodur RE imagwiritsidwanso ntchito popanga polyurethane elastomers. Ma polyurethane elastomers amawonetsa zinthu zabwino zamakina monga kutsika kwambiri, kukana misozi komanso kukana abrasion. Amagwiritsidwa ntchito m'mafakitale monga nsapato, magalimoto ndi mafakitale. Desmodur RE imagwira ntchito yofunika kwambiri pakuphatikizika kwa ma elastomers awa, kuwapatsa mphamvu zolimba komanso zotalikirapo.
Komanso,Desmodur REamadziwika chifukwa cha kuchiritsa kwake mwachangu. Izi zikutanthauza kuti imatha kulumikizana mwachangu ndi ma polyols kuti apange network yolimba ya polyurethane. Kuchiritsa mwachangu ndikofunikira kwambiri m'mafakitale omwe amafunikira nthawi yosinthira mwachangu, monga zamagalimoto kapena zomanga. Kuphatikiza apo, Desmodur RE imagwirizana bwino ndi ma polyols osiyanasiyana, zomwe zimapangitsa opanga kupanga mawonekedwe azinthu zawo malinga ndi zofunikira zenizeni.
Pomaliza, Desmodur RE (CAS 2422-91-5) ndi gulu lomwe limagwiritsidwa ntchito kwambiri ndi ntchito zambiri m'mafakitale monga zokutira, zomatira ndi elastomers. Makhalidwe ake apadera, kuphatikiza kuuma kowonjezereka, kumamatira komanso kuchiritsa mwachangu, kumapangitsa kukhala chisankho chodziwika bwino pakati pa opanga. Kaya akupereka chitetezo cha dzimbiri kudzera mu zokutira za polyurethane, kupeza zomangira zolimba mu zomatira, kapena kukulitsa luso lamakina a elastomers, Desmodur RE yatsimikizira kukhala gawo lofunikira popanga zida zogwira ntchito kwambiri.
Nthawi yotumiza: Aug-18-2023