Ma ke kaʻina hana oPP lole ʻaʻole i ulana ʻia, hiki i nā mea like ʻole ke hoʻopili i nā waiwai kino o ka huahana. ʻO ke kālailai ʻana i ka pilina ma waena o kēia mau mea a me ka hana huahana e kōkua i ka hoʻomalu pono ʻana i nā kūlana kaʻina hana a loaʻa i ka kiʻekiʻe kiʻekiʻe a pili nui i nā huahana lole PP non-woven. Ma lalo iho nei, e kālailai pōkole ka mea hoʻoponopono lole ʻole o Chengxin i nā kumu hoʻohālikelike nui i nā waiwai kino o nā lole i ulana ʻole ʻia PP, a kaʻana like me nā mea a pau:
1. Heehee helu helu a me molecular puunaue kaumaha o PP non-woven lole polypropylene chips
ʻO nā hōʻailona koʻikoʻi nui o nā ʻāpana polypropylene ʻo ke kaumaha molekala, ka hāʻawi ʻana i ke kaumaha molecular, maʻamau, melt index, a me ka ʻiʻo lehu. ʻO nā pāpaʻi PP i hoʻohana ʻia no ka wili ʻana he molekala kaumaha ma waena o 100000 a me 250000, akā ua hōʻike ka hana i nā waiwai rheological o ka heheʻe ʻoi aku ka maikaʻi i ka wā o ke kaumaha o ka polypropylene ma kahi o 120000, a ʻoi aku ka kiʻekiʻe o ka wikiwiki o ka milo. ʻO ka helu heheʻe he ʻāpana e hōʻike ana i nā waiwai rheological o ka heheʻe, a me ka helu heheʻe o nā ʻāpana polypropylene i hoʻohana ʻia nospunbondʻO ka maʻamau ma waena o 10 a me 50. I ka wā o ke kaʻina wili, loaʻa i ka filament hoʻokahi kiʻi kahe ea, a ua kaupalena ʻia ka lākiō huki o ka filament e nā waiwai rheological o ka heheʻe.
ʻO ka nui o ka paona molekala, ʻo ia ka liʻiliʻi o ka helu heheʻe, ʻoi aku ka ʻilihune o kāna mau waiwai rheological. ʻO ka liʻiliʻi o ka lākiō kikoo i loaʻa i ka filament, ʻoi aku ka nui o ka nui o ka fiber o ka filament i loaʻa ma lalo o ka nui o ka heheʻe i hoʻokuʻu ʻia mai ka spinneret, ka hopena i ka manaʻo lima paʻakikī no ka lole i ulana ʻole ʻia PP. Inā kiʻekiʻe ka helu hoʻoheheʻe, emi ka viscosity o ka hoʻoheheʻe ʻana, maikaʻi nā waiwai rheological, a emi ke kū'ē i ka hoʻolōʻihi ʻana. Ma lalo o nā kūlana kikoo like, hoʻonui ka nui o ka hoʻolōʻihi. Ke piʻi aʻe ka hoʻonohonoho ʻana o nā macromolecules, e hoʻonui ʻia ka ikaika haʻihaʻi o ka lole PP non-woven, a e emi ka nui o ka fiber o ka filament, e hopena i kahi ʻano palupalu o ka lole. Ma lalo o ke kaʻina hana hoʻokahi, ʻoi aku ka kiʻekiʻe o ka helu heheʻe o ka polypropylene, ʻoi aku ka liʻiliʻi o kona nui fiber, a ʻoi aku ka ikaika o ka haki.
Ana pinepine 'ia ka puunaue kaumaha mole e ka ratio (Mw/Mn) o ka awelika kaumaha molecular weight (Mw) i ka helu awelika kaumaha molekala (Mn) o ka polymer, i ike ia ka waiwai mahele kaumaha mole. ʻOi aku ka liʻiliʻi o ka waiwai o ka hāʻawi ʻana i ke kaumaha o ka molekala, ʻoi aku ka paʻa o nā waiwai rheological o kona heheʻe, a ʻoi aku ka paʻa o ke kaʻina wili, ʻo ia ka mea e hoʻomaikaʻi ai i ka wikiwiki wili. Loaʻa iā ia ka elasticity melt haʻahaʻa a me ka viscosity tensile, hiki ke hōʻemi i ke koʻikoʻi o ka wili, e maʻalahi ka PP a maʻalahi, a loaʻa i nā finer denier. Eia kekahi, maikaʻi ke kūlike o ka hoʻokumu pūnaewele, me ka manaʻo lima maikaʻi a me ke kūlike.
2. PP non-woven lole wili wela
ʻO ka hoʻonohonoho ʻana o ka mahana wili e pili ana i ka helu hehee o ka mea maka a me nā koi no nā waiwai kino o ka huahana. ʻOi aku ka kiʻekiʻe o ka helu hehee o ka mea maka, ʻoi aku ka kiʻekiʻe o ka mahana wili e pili ana, a ʻo ia hoʻi. Pili pono ka mahana wili i ka viscosity o ka heheʻe, a haʻahaʻa ka mahana. He kiʻekiʻe ka viscosity o ka hoʻoheheʻe ʻana, e paʻakikī ai ka wili a hiki i ka hana ʻana i nā fila haʻihaʻi, ʻoʻoleʻa a paʻa paha, e pili ana i ka maikaʻi o ka huahana. No laila, i mea e hōʻemi ai i ka viscosity o ka heheʻe a hoʻomaikaʻi i kona mau waiwai rheological, ʻae ʻia ke ʻano o ka hoʻonui ʻana i ka mahana. He hopena koʻikoʻi ka mahana wili i ke ʻano a me nā waiwai o nā fiber. ʻO ka haʻahaʻa o ka wela o ka wili, ʻoi aku ka kiʻekiʻe o ka tensile viscosity o ka heheʻe, ʻoi aku ka nui o ke kūpaʻa ʻana, a ʻoi aku ka paʻakikī o ke kikoo ʻana i ka filament e loaʻa ai ka nui o ka fiber.
Ka manawa hoʻouna: Mar-16-2024