Pehea e hoʻomaikaʻi ai i ka pono kānana o ka lole meltblown?

Ma ke ʻano he kumu kumu o nā maka lapaʻau, ʻo ka hoʻomaʻamaʻa kānana ʻana o ka lole meltblown e pili pono i ka hopena pale o nā masks. Nui nā mea e pili ana i ka hana kānana ʻana o nā lole hoʻoheheʻe ʻia, e like me ke ʻano o ka laina laina fiber, ke ʻano o ka fiber mesh, ka mānoanoa, a me ka nui.

Eia naʻe, ma ke ʻano hemea kānana eano nā masks, inā paʻa loa ka mea, liʻiliʻi nā pores, a kiʻekiʻe loa ke kūʻē ʻana o ka hanu, ʻaʻole hiki i ka mea hoʻohana ke hoʻoheheʻe i ka ea, a nalowale ka waiwai o ka mask.

Pono kēia i ka mea kānana ʻaʻole wale e hoʻomaikaʻi i kona pono kānana, akā e hōʻemi hoʻi i kona kūʻē ʻana i ka hanu e like me ka hiki, a ʻo ke kūʻē ʻana o ka hanu a me ka pono kānana he mea kūʻē. ʻO ke kaʻina hana hoʻoponopono electrostatic polarization ʻo ia ke ala maikaʻi loa e hoʻoponopono ai i ka kūʻē ʻana ma waena o ke kū ʻana o ka hanu a me ka pono kānana.

ʻO ka mīkini kānana o ka lole meltblown

Ma ka mīkini kānana o nā mea kānana hoʻoheheʻe ʻia, ʻo nā mīkini i ʻike maʻamau ʻia me ka diffusion Brownian, interception, inertial collision, gravity settling, a me electrostatic adsorption. Ma muli o ka ʻoiaʻiʻo ʻo nā kumu mua ʻehā he mau pale mechanical āpau, hiki ke hōʻuluʻulu ʻia ke ʻano kānana o nā lole meltblown e like me nā pale mechanical a me ka electrostatic adsorption.

Keakea mīkini

Ka awelika fiber anawaena opolypropylene meltblown lolehe 2-5 μm, a hiki ke ālai ʻia nā droplets me ka nui o ka nui ma mua o 5 μm i ka lewa e ka meltblown fabric.

Ke emi iho ke anawaena o ka lepo ma lalo o 3 μm, ua hoʻonohonoho pono ʻia nā fibers i loko o ka lole hoʻoheheʻe ʻia a hoʻopili ʻia e hana i kahi papa kānana kānana multi curved channel. Ke hele nā ​​ʻāpana i nā ʻano ʻano o nā ala curved a i ʻole nā ​​​​alanui, hoʻopili ʻia ka lepo maikaʻi ma ka ʻili fiber e ka mechanical filtration van der Waals force.

Ke nui ka nui o ka nui a me ka wikiwiki o ka ea, hoʻokokoke ka ea i ka mea kānana a keakea ʻia, e hoʻoheheʻe ʻia a puni, ʻoiai e hemo nā ʻāpana mai ke kahawai ma muli o ka inertia a kū pololei me nā fibers, hopu ʻia.

Ke liʻiliʻi ka nui o ka ʻāpana a me ka haʻahaʻa o ke kahe ʻana, hoʻopuehu nā ʻāpana ma muli o ka neʻe ʻana o Brownian a hui pū me nā fibers e hopu ʻia.

Electrostatic adsorption

Electrostatic adsorption e pili ana i ka hopu ʻana i nā ʻāpana e ka Coulomb ikaika o nā fila i hoʻopaʻa ʻia (polarizations) i ka wā e hoʻopiʻi ʻia ai nā fibers o ka mea kānana. Ke hele ka lepo, bacteria, virus a me nā mea ʻē aʻe i loko o ka mea kānana, ʻaʻole hiki i ka ikaika electrostatic ke huki pono wale i nā ʻāpana i hoʻopiʻi ʻia, akā hopu pū kekahi i nā ʻāpana kūʻokoʻa polarized ma o ka hopena induction electrostatic. Ke piʻi aʻe ka mana electrostatic, ʻoi aku ka ikaika o ka hopena adsorption electrostatic.

Introduction to Electrostatic Electrification Process

Ma muli o ka pono kānana o nā lole i ulana ʻole ʻia meltblown ma lalo o 70%, e hilinaʻi wale ana i ka hopena mechanical barrier o nā ʻāpana ʻekolu-dimensional aggregates o nā fibers me nā fibers maikaʻi, nā liʻiliʻi liʻiliʻi, a me nā porosity kiʻekiʻe i hana ʻia e nā meltblown ultrafine fibers ʻaʻole lawa. No laila, hoʻohui pinepine nā mea kānana meltblown i nā hopena electrostatic charge i ka meltblown fabric ma o ka ʻenehana polarization electrostatic, me ka hoʻohana ʻana i nā ʻano electrostatic e hoʻomaikaʻi ai i ka pono kānana, e hiki ai ke hoʻokō i ka 99.9% a 99.99% ka pono kānana. Hiki i kahi ʻāpana lahilahi ke kūpono i nā kūlana i manaʻo ʻia, a haʻahaʻa hoʻi ke kū ʻana o ka hanu.

I kēia manawa, ʻo nā kumu nui o ka polarization electrostatic e pili ana i ka electrospinning, corona discharge, friction induced polarization, thermal polarization, a me ka haʻahaʻa haʻahaʻa electron beam bombardment. I waena o lākou, ʻo ka hoʻokuʻu corona i kēia manawa ke ʻano polarization electrostatic maikaʻi loa.

ʻO ke ʻano o ka hoʻokuʻu ʻana o ka corona he ʻano ia o ka hoʻouka ʻana i ka mea hoʻoheheʻe ʻia ma o hoʻokahi a ʻoi aku paha o nā pūʻulu o nā electrodes koʻikoʻi (voltage maʻamau 5-10KV) o kahi mea hana electrostatic ma mua o ka wili ʻana i ka meltblown fiber mesh. Ke hoʻohana ʻia ka uila kiʻekiʻe, hoʻopuka ka ea ma lalo o ka piko o ka nila i ka corona ionization, ka hopena o ka hoʻokuʻu ʻana i ka wahi. Hoʻokomo ʻia nā mea lawe ma ka ʻili o ka lole hoʻoheheʻe ʻia ma lalo o ka hana o ke kahua uila, a e hoʻopaʻa ʻia kekahi mau mea lawe i nā pahele o nā ʻāpana makuahine paʻa i ka hohonu o ka ʻili, e hana ana i ka lole hoʻoheheʻe i mea kānana no ke kino paʻa.

Hiki ke kiʻi ʻia ka hoʻonui ʻana i ka ʻili o ka lole meltblown ma o ke ʻano hoʻokuʻu corona no ka mālama ʻana i ka electrostatic discharge, akā i mea e pale ai i ka palaho o kēia waihona electrostatic, pono ke ʻano a me ke ʻano o ka meltblown electrode material e kūpono i ka mālama ʻana. Hiki ke hoʻokō ʻia ke ala e hoʻomaikaʻi ai i ka hiki ke hoʻopaʻa kālā o nā mea electret ma ka hoʻokomo ʻana i nā mea hoʻohui me nā waiwai mālama mālama e hoʻohua i nā pahele uku a hopu i nā uku.

No laila, ke hoʻohālikelike ʻia me nā laina hana hoʻoheheʻe maʻamau, ʻo ka hana ʻana o nā mea hoʻoheheʻe ʻia no ka kānana ea e pono ai ka hoʻohui ʻana o nā mea hoʻokuʻu electrostatic kiʻekiʻe i ka laina hana, a me ka hoʻohui ʻana o ka masterbatch polar e like me nā ʻāpana tourmaline i ka mea hana polypropylene (PP).

ʻO nā kumu nui e pili ana i ka hopena o ka mālama electrospinning ma nā lole meltblown

1. Nā kūlana hoʻouka: ka manawa hoʻouka, ka lōʻihi o ka hoʻoukaʻana, ka uila uila;

2. Mānoanoa;

3. Nā mea uila.

Dongguan Liansheng Non ulana 'enehana Co., Ltd.ua hoʻokumu ʻia ma Mei 2020. He ʻoihana hana lole lole ʻaʻole i ulana nui ʻia e hoʻohui i ka noiʻi a me ka hoʻomohala ʻana, ka hana ʻana, a me ke kūʻai aku. Hiki iā ia ke hana i nā kala like ʻole o ka PP spunbond non-woven fabrics me ka laulā o lalo o 3.2 mika mai 9 grams a 300 grams.