ʻElua ʻano resins i hoʻohana ʻia e hana i nā composites: thermoset a me thermoplastic. ʻO nā resins Thermoset ka resins maʻamau loa, akā ke loaʻa hou nei ka hoihoi i nā resins thermoplastic ma muli o ka hoʻonui ʻia ʻana o ka hoʻohana ʻana i nā composites.
Paʻakikī nā resins Thermoset ma muli o ke kaʻina hana hoʻōla, kahi e hoʻohana ai i ka wela e hana i nā polymers i hoʻopili nui ʻia me nā pilina paʻa insoluble a infusible paha ʻaʻole e heheʻe i ka wā e wela ai. ʻO nā resins Thermoplastic, ma ka ʻaoʻao ʻē aʻe, he mau lālā a kaulahao paha o nā monomers e palupalu i ka wā e wela ai a paʻa i ka wā e hoʻomaʻalili ʻia ai, kahi hana hoʻohuli ʻole ʻia ʻaʻole pono ka loulou kemika. I ka pōkole, hiki iā ʻoe ke hoʻoheheʻe hou a hoʻoponopono hou i nā resins thermoplastic, akā ʻaʻole nā resins thermoset.
Ke ulu nei ka hoihoi i nā composites thermoplastic, ʻoi aku hoʻi i ka ʻoihana kaʻa.
Nā Pōmaikaʻi o nā Resin Thermosetting
ʻO nā resins Thermoset e like me ka epoxy a i ʻole polyester ka mea i makemake nui ʻia i ka hana ʻana i nā composite ma muli o ko lākou viscosity haʻahaʻa a me ke komo maikaʻi loa i loko o ka pūnaewele fiber. No laila hiki ke hoʻohana i nā fibers hou aʻe a hoʻonui i ka ikaika o ka mea composite i hoʻopau ʻia.
ʻO ka hanauna hou loa o nā mokulele e hoʻokomo pinepine i nā ʻāpana composite ma mua o 50 pakeneka.
I ka wā o ka pultrusion, ua hoʻoluʻu ʻia nā olonā i loko o kahi resin thermoset a waiho ʻia i loko o kahi ʻōmole wela. Hoʻāla kēia hana i kahi hopena hoʻōla e hoʻololi i ka resin kaumaha molekala haʻahaʻa i loko o kahi ʻano pūnaewele ʻekolu-dimensional paʻa kahi i hoʻopaʻa ʻia ai nā olonā i loko o kēia pūnaewele i hoʻokumu hou ʻia. ʻOiai ʻo ka hapa nui o nā hopena hoʻōla he exothermic, hoʻomau kēia mau hopena ma ke ʻano he kaulahao, e hiki ai ke hana nui. Ke hoʻopaʻa ʻia ka resin, hoʻopaʻa ka ʻano ʻekolu-dimensional i nā olonā ma kahi a hāʻawi i ka ikaika a me ka paʻakikī i ka composite.
Ka manawa hoʻouna: ʻOkakopa-19-2022
