Hei whakaiti i ngā utu hua, hei whakatutuki hoki i ngā mahi whai hua ake,kirihou polyurethaneKa taea te whakamahi i ngā elastomers hei whakapakeke hei whakapakeke i ngā rauemi rapa thermoplastic me ngā rauemi rapa kua whakarerekētia.
Nā te meapolyurethaneHe pūmua tino pōro, ka taea te hototahi ki ngā kapia pōro, ki ngā rapa rānei, pērā i te wā e whakamahia ana me te polyethylene chlorinated (CPE) hei whakaputa hua hauora; Mā te whakaranu ki te ABS ka taea te whakakapi i te whakamahinga o ngā kirihou thermoplastic hangarau; Ina whakamahia me te polycarbonate (PC), he āhuatanga ōna pērā i te ātete hinu, te ātete wahie, me te ātete pānga, ā, ka taea te whakamahi hei hanga tinana waka; Mā te whakaranu ki te polyester ka taea te whakapai ake i tōna kaha; Hei tāpiri, ka taea te hototahi ki te polyvinyl chloride, te polyoxymethylene (POM), te polyvinylidene chloride rānei; Ka taea te hototahi ki te polyurethane polyester me te 15% rapa nitrile, te 40% rapa nitrile/polyvinyl chloride rānei; Ka taea hoki te hototahi ki te polyether polyurethane me te 40% rapa nitrile/polyvinyl chloride hei whakapiripiri; Ka taea hoki te hototahi ki ngā copolymers acrylonitrile styrene (SAN); Ka taea e ia te hanga i tētahi hanganga whatunga whakauru (IPN) me ngā polysiloxanes tauhohe. Kua oti kē te hanga mana te nuinga o ngā piripiri whakaranu kua whakahuatia ake nei.
I ngā tau tata nei, kua piki haere te nui o ngā rangahau mō te whakapakari i te POM mā teTe Whare Tiaki Tamarikii Haina. Ko te whakaranu o te TPU me te POM ehara i te mea ka whakapai ake i te ātete pāmahana teitei me ngā āhuatanga miihini o te TPU, engari ka tino whakapakari hoki i te POM. Kua whakaatuhia e ētahi kairangahau i roto i ngā whakamātautau pakaru kume, ki te whakatauritea ki te matrix POM, ka huri ngā koranu POM me te tāpiri TPU mai i te pakaru pakarukaru ki te pakaru ngāwari. Mā te tāpiri o te TPU ka whakawhiwhia hoki te POM ki te mahi mahara āhua. Ko te rohe tioata o te POM hei wāhanga pumau o te koranu mahara āhua, ko te rohe koretake o te TPU me te POM hei wāhanga whakahurihuri. Ina 165 ℃ te pāmahana urupare whakaora, ā, ko te wā whakaora he 120 s, ka eke te tere whakaora o te koranu ki runga ake i te 95%, ā, ko te pānga whakaora te mea pai rawa atu.
He uaua te hototahi o te TPU ki ngā rauemi polymer kore-polar pērā i te polyethylene, te polypropylene, te rapa ethylene propylene, te rapa butadiene, te rapa isoprene, te paura rapa para rānei, ā, kāore e taea te whakaputa rauemi hiato me te mahi pai. Nō reira, he maha ngā wā ka whakamahia ngā tikanga maimoatanga mata pērā i te plasma, te tukunga korona, te matū mākū, te paninga tuatahi, te mura, ngā hau tauhohe rānei mō ēnei mea whakamutunga. Hei tauira, ka taea e ngā kamupene hua hau me ngā kamupene matū o Amerika te whakapai ake i te modulus piko, te kaha kume, me te ātete kakahu o te paura polyethylene taumaha ngota tino teitei me te taumaha ngota o te 3-5 miriona i muri i te maimoatanga mata hau hohe F2/O2, me te tāpiri atu ki ngā elastomers polyurethane i te ōwehenga 10%. Hei tāpiri, ka taea te whakamahi i te maimoatanga mata hau hohe F2/O2 ki ngā muka poto roa kua whakaritea me te roa o te 6-35mm kua whakahuatia i runga ake nei, ka taea te whakapai ake i te pakari me te pakari haehae o te rauemi hiato.
Wā tuku: Hanuere-19-2024