Kia Mārama ki te Pakari, te Pūmau me te Ātete Pānga o ngā Kirihou

Ko te "pakari" e pā ana ki te nui o te kaha e hiahiatia ana mō te whakarerekētanga kotahi o te mea; ko te "ngāwari" e pā ana ki te nui o te whakarerekētanga o te mea i raro i te kaha kotahi. Ko te nui ake o te "pakari", ko te iti ake o te whakarerekētanga ka puta; ko te nui ake o te "ngāwari", ko te ngāwari ake ki te whakarerekētanga. He ngohengohe te rauemi he pakari pai, ā, he nui ake te toronga kume i te whati me te kaha pānga, ko te pakeke, te kaha kume me te modulus tensile tensile he iti ake.

E kitea ana i te whakaahuatanga i runga ake nei, he rerekē te pakari me te pakari, engari mō ngā kirihou kua whakarerekētia, he hononga tetahi ki tetahi. Hei tauira, ina pakari ake ngā kirihou kua whakapakaritia ki te muka karāhe, ka piki ake pea te kaha kume me te kaha pānga.

Me pēhea te whakapai ake i te pakari o te kirihou?

Kua kitea mā te whakanui ake i te pakari o te kapia matrix ka taea te whakapai ake i te pānga whakapakari o ngā kirihou whakapakari.

He maha ngā huarahi hei whakapakari, pērā i te whakanui ake i te taumaha ngota o te kapia matrix hei whakawhāiti i te tohatoha taumaha ngota, te whakahaere rānei i te whakatiotanga, te kaha whakatiotanga, te rahi me te āhua o te tioata hei whakapai ake i te pakari.

Me pēhea te wehewehe i te kirihou e whakamahia whānuitia ana hei whakapakari tinana?

• Kua whakapakeketia te elastomer rapa
EPR (rua ethylene-propylene), EPDM (EPDM), rapa butadiene (BR), rapa maori (NR), rapa isobutene (IBR), rapa nitrile (NBR), me ētahi atu. He pai mō ngā whakarerekētanga whakapakari kapia kirihou katoa;

• Kua whakapakeketia ngā elastomers thermoplastic
SBS, SEBS, POE, TPO, TPV, me ētahi atu. Mō te whakapakari i te polyolefin, i te kapia kore-porora rānei, mō te whakapakari i te polyester, te polyamide me ētahi atu polymer kei roto ngā rōpū mahi porora me tāpiri he hototahi;

• He copolymer anga-matua kua whakapakeketia me te terpolymer tauhohe
ACR (acrylate), MBS (methyl acrylate-butadiene-styrene copolymer), PTW (ethylene-butyl acrylate-glycidyl methacrylate copolymer), E-MA-GMA (ethylene-methyl acrylate-glycidyl methacrylate copolymer), me ētahi atu. Whakamahia mō te hanga kirihou me te whakapakari i te koranu polymer ātete pāmahana teitei;

• Whakakahangia mā te whakaranu i ngā kirihou pakari teitei
PP/PA, PP/ABS, PA/ABS, HIPS/PPO, PPS/PA, PC/ABS, PC/PBT, me ētahi atu. He huarahi nui te hangarau koranu polima hei whakaritengā kirihou hangarau pakari teitei.

• Ētahi atu huarahi hei whakapakari
Te whakapakeketanga o ngā matūriki nano (pērā i te nano-cacO3), te whakapakeketanga o te kapia sarin (Dupont metal ionomer), me ētahi atu.