Ua hoʻomākaukau ʻia nā membrane fiber PTFE e ke kaʻina ʻōwili wela a me ka hoʻolālā orthogonal.Ua hoʻohana ʻia ka scanning electron microscope (SEM) e nānā i ka morphology ili o ka membrane fiber, a ua hoʻāʻo ʻia a loiloi ʻia kona mānoanoa, permeability, aperture, porosity, tensile properties, acid and alkali corrosion resistance.
1. Hoʻolālā a mewaiwai o PTFEʻolokaʻa ʻili wela
Ua hoʻomākaukau ʻia nā membrane fiber PTFE e ke kaʻina ʻōwili wela a me ka hoʻolālā orthogonal.Ua hoʻohana ʻia ka scanning electron microscope (SEM) e nānā i ka morphology ili o ka membrane fiber, a ua hoʻāʻo ʻia a loiloi ʻia kona mānoanoa, permeability, aperture, porosity, tensile properties, acid and alkali corrosion resistance.Ua hōʻike nā hualoaʻa i ka PTFE wela-'ōwili fiber film mānoanoa he 0.12 ~ 0.15 mm, permeability i 80 ~ 101 mm / s, pore anawaena he 14 ~ 17 ms, porosity ua 14.57% ~ 27.04%, fracture ikaika 38 ~ 59 N, ʻO ka lōʻihi o ka wā haʻihaʻi he 30% ~ 38%. Ma nā ʻano 9 o nā membrane fiber, aia nō ka nui o nā hale fibrous koe wale nō ka hoʻoheheʻe ʻana o ka fiber ma kekahi mau ʻili.Ma hope o ka hoʻomaʻamaʻa ʻana i ka waikawa a me ka alkali, ʻaʻole i hoʻololi ʻia nā waiwai tensile o ka membrane fiber.Wahi a nā hopena hoʻokolohua orthogonal, ʻo ka fiber mesh density ka mea nui loa i ka mānoanoa, permeability, pore diameter a me nā waiwai tensile o ka fiber membrane, a me ka hoʻonui ʻana o ka fiber mesh density, ka permeability a me ka diameter pore o ka fiber membrane e emi iho. , oiai ka mānoanoa a me ka ikaika haki.
2. Nā waiwai o ka polytetrafluoroethylene i hoʻololi ʻia epdm rubber
Hoʻololi ʻia ʻo EPDM e polytetrafluoroethylene (PTFE) a me ka nano silicon dioxide (SiO2) i hoomakaukauia e ka vulcanization.ʻO ka nānā ʻana i ka microscope electron a me ka spectrum infrared i hōʻike i ka PTFE a me ka EPDM i kūpono maikaʻi.Hōʻike ka hoʻāʻo DSC he ʻano wela hoʻololi aniani ʻokoʻa ka composite.Ke hoʻohui ʻia ʻo PTFE i 5 mau ʻāpana, ʻoi aku ka maikaʻi o ka PTFE a me EPDM.I kēia manawa, hiki i nā mea mechanical o epdm-ptfe ke kiʻekiʻe loa, a ʻo kona ikaika tensile, elongation i ka haki, paʻakikī a me ka ikaika o ka waimaka he 22.42mpa, 588.91%, 82.0° a me 49.60 kN / m.Hōʻike ka loiloi Thermogravimetric a me nā hoʻokolohua kahiko e hoʻomaikaʻi ʻia ka ʻelemakule a me ka pale wela o PTFE.Ua hoʻomaikaʻi maikaʻi ʻia nā waiwai mechanical o EPDM ma hope o ka hoʻohui ʻana i nā ʻāpana 5 o nano SiO2.
3. Ka 'ano a me ka waiwai o ka polytetrafluoroethylene/polypropylene hybrid melt jet filter material.
I mea e hoʻolōʻihi ai i ka manawa mālama o ka static charge ma ka ʻili o ka polypropylene (PP) melt-blown material, ua hoʻomaikaʻi ʻia ka nui o ka mālama ʻana o ka static charge e ka organik hybridization.I ka hoʻokolohua, ua hui pū ʻia ka PTFE ultrafine pauka a me ka ʻāpana PP e granulate i kekahi ʻāpana, a ua loaʻa nā mea nonwoven like ʻole ma ke kaʻina hana hoʻoheheʻe melt-jet.Ua aʻo ʻia ke ʻano a me ka hana o nā mea i ulana ʻole ʻia, e like me ka morphology, micropores, electrostatic potential and filtration efficiency, a ua hoʻohana ʻia ka ʻenehana electret corona waho e hana i ka ʻili o ka mea e lawe i ka static charge.Hōʻike nā hopena hoʻāʻo i ka hoʻohui ʻana i ka PTFE hiki ke hoʻomaikaʻi maikaʻi i ka hiki ke hoʻonui i ka hiki ke mālama ʻia o ka melt-jet PP nonwoven material, a i ka wā he 0.1% ka hapa nui o ka PTFE, ʻo ka volta static surface ka mea kiʻekiʻe loa, ʻo ka hana kānana ka mea maikaʻi loa a me ka static. ʻoi aku ka maikaʻi o ka hoʻopaʻa kālā.
Ka manawa hoʻouna: Jun-28-2019