ʻO ka hoʻoheheʻe ʻana o ka polypropylene i ulana ʻole ʻia
He lole i ulana ʻole ʻia
Nānā nui
ʻO nā hoʻohana ʻokoʻa a i ʻole nā pae o nā masks pale a me nā lole e hoʻohana i nā mea like ʻole a me nā ʻano hoʻomākaukau, e like me ke kiʻekiʻe kiʻekiʻe o nā masks pale lapaʻau (e like me N95) a me nā lole pale, ʻekolu a ʻelima mau ʻāpana o ka mea i ulana ʻole ʻia, ʻo ia hoʻi ka hui ʻana o SMS a SMMMS.
ʻO ka hapa nui o kēia mau mea pale ʻo ia ka papa pale, ʻo ia hoʻi melt-blown non-woven layer M, ʻoi aku ka maikaʻi o ke anawaena fiber o ka papa, 2 ~ 3μm, he hana koʻikoʻi ia i ka pale ʻana i ka infiltration o ka bacteria a me ke koko. . Hōʻike ka lole microfiber i kāna kānana maikaʻi, ka ea permeability a me ka adsorbability, no laila hoʻohana nui ʻia i nā mea kānana, nā mea wela, ka maʻemaʻe olakino a me nā māla ʻē aʻe.
ʻO ka polypropylene hehee i puhi ʻole i ka ʻenehana hana lole a me ka hana
ʻO ka hoʻoheheʻe ʻana i ka lole i ulana ʻole ʻia he polymer resin slice ka hānai ʻana → hoʻoheheʻe ʻia → hoʻoheheʻe ʻia ka holoi ʻana i ka haumia → hoʻoheheʻe ʻana i ka pauma ka ana pololei ʻana → spinet → mesh → wili ʻaoʻao → ka hana huahana.
ʻO ke kumu o ka hoʻoheheʻe ʻana i ka hoʻoheheʻe ʻana ʻo ia ka extrude polymer hehee mai ka puka spinneret o ke poʻo make e hana i kahi kahe lahilahi o ka heheʻe. I ka manawa like, e kahe ana ka ea kiʻekiʻe a me ka wela ma nā ʻaoʻao ʻelua o ka puka spinet a hohola i ke kahawai heheʻe, a laila hoʻomaʻemaʻe ʻia i nā filament me ka fineness o 1 ~ 5μm wale nō. Huki ʻia kēia mau filament i nā pulu pōkole ma kahi o 45mm e ke kahe wela.
I mea e pale aku ai i ka puhi ʻana o ka ea wela i ka pulupulu pōkole, ua hoʻonohonoho ʻia kahi mea hoʻoheheʻe ʻia (ma lalo o ka pale coagulation) e hōʻiliʻili pono i ka microfiber i hana ʻia e ka ea wela kiʻekiʻe. ʻO ka hope, hilinaʻi ia i ka paʻa ponoʻī e hana i ka lole i ulana ʻole ʻia.
Nā palena kaʻina hana nui:
Nā waiwai o ka polymer maka mea: me ka rheological waiwai o ka resin maka mea, lehu maʻiʻo, pili molecular lehulehu mahele, etc. Ma waena o lākou, rheological waiwai o ka maka, ka mea nui index, maʻamau i hōʻike 'ia e hehee ai index (MFI). ʻOi aku ka nui o ka MFI, ʻoi aku ka maikaʻi o ka hoʻoheheʻe ʻana o ka wai o ka mea, a me ka hope. ʻO ka haʻahaʻa haʻahaʻa o ke kaumaha o ka resin, ʻoi aku ka kiʻekiʻe o ka MFI a me ka haʻahaʻa o ka viscosity heheʻe, ʻoi aku ka maikaʻi no ka hoʻoheheʻe ʻana i ka hoʻoheheʻe ʻana me ka maikaʻi ʻole. No ka polypropylene, pono ka MFI ma ka laulā o 400 ~ 1800g / 10mIN.
I ke kaʻina hana o ka hoʻoheheʻe ʻana i ka hoʻoheheʻe ʻana, ua hoʻoponopono ʻia nā ʻāpana e like me ke koi o nā mea maka a me nā huahana ka mea nui:
(1) Hoʻoheheʻe ʻia ka nui o ka extrusion i ka wā e mau ai ka mahana, piʻi ka nui o ka extrusion, piʻi ka nui o ka melt blown nonwoven, a piʻi ka ikaika (e emi iho ma hope o ka hiki ʻana i ka waiwai kiʻekiʻe). ʻO kona pilina me ke anawaena fiber linearly piʻi, nui ka nui o ka extrusion, piʻi ke anawaena fiber, emi ka helu kumu a emi ka ikaika, emi ka māhele paʻa, kumu a me ka siliki, no laila e emi iho ka ikaika pili o ka lole i ulanaʻoleʻia. .
(2) ʻAʻole pili wale ka mahana o kēlā me kēia wahi o ka wili i ka maʻalahi o ke kaʻina wili, akā pili pū kekahi i ke ʻano, ka manaʻo a me ka hana o ka huahana. He kiʻekiʻe loa ka mahana, aia ka "SHOT" block polymer, piʻi ka hemahema o ka lole, piʻi ka fiber haʻihaʻi, ʻike ʻia "lele". Hiki i nā hoʻonohonoho wela kūpono ke hoʻopaʻa ʻia ke poʻo sprinkler, hoʻopau i ka lua spinneret, a hōʻino i ka mea hana.
(3) Hōʻike maʻamau ka mahana wela o ka ea wela e ka wikiwiki o ka ea wela (ka puʻe), he hopena pololei i ka maikaʻi o ka fiber. I ka hihia o nā ʻāpana ʻē aʻe, e hoʻonui i ka wikiwiki o ka ea wela, ka hoʻomāhuahua ʻana o ka fiber, ka hoʻonui ʻana o ka node fiber, ka ikaika like, ka piʻi ʻana o ka ikaika, ka manaʻo ʻole i ulana ʻia e lilo i palupalu a maʻalahi. Akā ʻoi aku ka nui o ka wikiwiki, maʻalahi ke ʻike ʻia "lele", pili i ke ʻano o ka lole i ulana ʻole ʻia; Me ka emi ʻana o ka velocity, piʻi ka porosity, hoʻemi ke kūpaʻa kānana, akā e emi ana ka pono o ka kānana. Pono e hoʻomaopopoʻia e pili ana ka mahana wela i ka wela hoʻoheheʻe, iʻole e hanaʻia ka ea a e pōʻino ka pahu.
(4) Ka wela heheʻe ʻO ka wela hoʻoheheʻe, ʻike ʻia hoʻi ʻo melt head temperature, pili loa i ka melt fluidity. Me ka piʻi ʻana o ka mahana, ʻoi aku ka maikaʻi o ka wai hoʻoheheʻe, emi ka viscosity, ʻoi aku ka maikaʻi o ka fiber a ʻoi aku ka maikaʻi o ka lokahi. Eia nō naʻe, ʻo ka haʻahaʻa o ka viscosity, ʻoi aku ka maikaʻi, haʻahaʻa haʻahaʻa loa, e hoʻoulu i ka huki nui ʻana, maʻalahi ka haʻihaʻi ʻana o ka fiber, ʻaʻole hiki ke hōʻiliʻili ʻia ke kūkulu ʻana o ka microfiber ultra-pōkole i ka lewa.
(5) Loaʻa ka mamao Loaʻa ka mamao (DCD) pili i ka mamao ma waena o ka spinneret a me ka pale mesh. He mea koʻikoʻi ko kēia ʻāpana i ka ikaika o ka fiber mesh. Me ka hoʻonui ʻana o DCD, emi ka ikaika a me ka ʻoʻoleʻa kulou, e emi ana ke anawaena o ka fiber, a e emi ana ke kiko paʻa. No laila, palupalu a palupalu ka lole i ulana ʻole ʻia, piʻi ka permeability, a me ka emi ʻana o ke kūpaʻa kānana a me ka pono o ka kānana. Ke lōʻihi ka lōʻihi, e hoʻemi ʻia ke kiʻi o ka fiber e ke kahe ʻana o ka ea wela, a e hoʻopili ʻia ka entanglement ma waena o nā fibers i ke kaʻina hana, e loaʻa ai nā filament. Ke liʻiliʻi loa ka loaʻa ʻana, ʻaʻole hiki ke hoʻomaʻalili ʻia ka fiber, ka hopena i ka uea, ke emi nei ka ikaika o ka lole i ulana ʻole ʻia, piʻi ka brittleness.
