Chisankho chatsopano chamankhwala chobiriwira: Nsalu ya PLA ya spunbond yosasinthika imatsegula nthawi yoteteza chilengedwe pazinthu zotayidwa zachipatala.

Chithandizo chamankhwala chobiriwira ndi njira yofunika kwambiri yachitukuko masiku ano, komanso kutuluka kwabiodegradable PLA (polylactic acid) spunbond nsalu nonwovenimapereka mwayi watsopano wochepetsera kupsinjika kwa chilengedwe komwe kumachitika chifukwa cha zinyalala zachipatala.

Ntchito zamankhwala za nsalu za PLAT spunbond

Nsalu ya PLA spunbond yawonetsa kuthekera m'magawo angapo azachipatala chifukwa cha mawonekedwe ake:

Zida zodzitetezera: Nsalu za PLA za spunbond zingagwiritsidwe ntchito popanga mikanjo ya opaleshoni, ma drapes opangira opaleshoni, matumba ophera tizilombo toyambitsa matenda, ndi zina zotero. Kafukufukuyu adapanganso PLA yochokera ku SMS (spunbond meltblown spunbond) zipangizo zamapangidwe, zomwe zingagwiritsidwe ntchito pazida zotetezera zachipatala zomwe zimafuna kusefera kwakukulu.

Mankhwala oletsa mabakiteriya: Powonjezera ma inorganic antibacterial agents monga nano zinc oxide (ZnO) ku PLA, nsalu zopanda nsalu zokhala ndi antibacterial zokhalitsa komanso zotetezeka zimatha kukonzedwa. Mwachitsanzo, pamene ZnO zili ndi 1.5%, mlingo wa antibacterial motsutsana ndi Escherichia coli ndi Staphylococcus aureus ukhoza kufika pa 98%. Zogulitsa zamtunduwu zitha kugwiritsidwa ntchito munthawi zomwe zimakhala ndi zofunikira kwambiri za antibacterial, monga zovala zachipatala, machira otayika, ndi zina zambiri.

Zonyamula zachipatala ndi zida zomangira: Nsalu zosalukidwa za PLA zitha kugwiritsidwa ntchito pakuyika matumba a zida zamankhwala. Mpweya wake wabwino umalola kuti mipweya yotseketsa ngati ethylene oxide kulowa, ndikutsekereza tizilombo tating'onoting'ono. PLA nanofiber membrane itha kugwiritsidwanso ntchito pazinthu zosefera zapamwamba.

Zopindulitsa zachilengedwe ndi zovuta

Phindu lalikulu la chilengedwe: Kugwiritsa ntchito nsalu za PLA spunbond kumathandiza kuchepetsa kugwiritsidwa ntchito kwa mafuta a petroleum ndi mankhwala otayika. Ikatayidwa, imatha kuwonongedwa kwathunthu pansi pamikhalidwe ya kompositi, kutenga nawo gawo pakuyenda kwachilengedwe, ndikuthandizira kuchepetsa kusungidwa kwa chilengedwe komanso "kuipitsa koyera" kwa zinyalala zachipatala.

Mavuto omwe akukumana nawo: Kukwezeleza kwa nsalu ya PLA spunbond mu zamankhwala kumakumanabe ndi zovuta zina. Mwachitsanzo, zida zoyera za PLA zimakhala ndi zovuta monga hydrophobicity yamphamvu, mawonekedwe osasunthika, ndipo zimafunikira kukonza kukana kutentha. Komabe, nkhanizi zikuyankhidwa pang'onopang'ono kudzera mukusintha kwazinthu komanso kukonza njira. Pokonzekera PLA copolymer ulusi, mayamwidwe awo chinyezi ndi kukana kutentha akhoza bwino. Kuphatikiza PLA ndi ma biopolymers ena monga PHBV kwatsimikiziridwa kuti ndi njira yabwino yopititsira patsogolo mawonekedwe ake amakina ndi kusinthika kwake.

Chitukuko chamtsogolo

Kukula kwamtsogolo kwa nsalu ya PLA spunbond mu zamankhwala kungakhale ndi izi:

Kusintha kwazinthu kukupitilirabe kuzama: M'tsogolomu, kafukufuku apitiliza kukulitsa mawonekedwe a nsalu ya PLA spunbond kudzera mu copolymerization, kusakaniza, ndi kuwonjezera zowonjezera (monga kugwiritsa ntchito ma unyolo owonjezera ndi ma antioxidants kuti apititse patsogolo kusinthika kwa PLA), monga kuwongolera kusinthasintha kwake, kupuma kwake, komanso kupezeka kwa chinyezi, kuti akwaniritse zofunikira zachipatala.

Kulimbikitsana kwa mafakitale ndi ukadaulo: Kupititsa patsogolo kwaPLA spunbond nsaluzimadalira kuphatikiza kwamakampani, maphunziro, ndi kafukufuku kuti alimbikitse kupita patsogolo kwaukadaulo wofunikira komanso kukulitsa kukula kwa mafakitale. Izi zikuphatikiza kukhathamiritsa kusungunuka kwa ma copolyesters a PLA ndikupanga matekinoloje opitilira muyeso opanga ma PLA potengera ma SMS.

Kuthamangitsidwa kwapawiri kwa mfundo zothandizira ndi kufunikira kwa msika: Ndi kutulutsidwa kwa "mapulani oletsa pulasitiki" ku Hainan ndi madera ena, komanso kutsindika kwapadziko lonse pa chitukuko chokhazikika ndi chuma chozungulira, ndondomeko zoyenera zachilengedwe zidzapitiriza kupanga msika waukulu wa zinthu zomwe zingawonongeke.

Chidule

Nsalu yowonongeka ya PLA ya spunbond, yokhala ndi ubwino wake woteteza chilengedwe chobiriwira, zipangizo zongowonjezwdwa, kuwonongeka kwachilengedwe, ndi kuthekera kogwira ntchito, imapereka chisankho chatsopano kwamakampani azachipatala kuti achepetse zovuta zachilengedwe ndipo akuyembekezeka kuyambitsa nthawi yoteteza chilengedwe pazinthu zotayidwa zachipatala.

Ngakhale kuwongolera kosalekeza kumafunikabe pakuchita zinthu ndi kuwongolera mtengo, ndi kupita patsogolo kwaukadaulo, kukhwima kwamakampani, komanso kukwezeleza malamulo achilengedwe, chiyembekezo chogwiritsa ntchito nsalu ya PLA spunbond m'munda wachipatala ndi chosangalatsa kwambiri.

Ndikukhulupirira kuti zomwe zili pamwambazi zingakuthandizeni kumvetsetsa bwino nsalu za PLA spunbond. Ngati muli ndi chidwi choonjezera pa mitundu yeniyeni ya mankhwala a PLA, monga zovala zotetezera kwambiri kapena zovala za antibacterial, tikhoza kupitiriza kufufuza.

Dongguan Liansheng Non Woven Technology Co., Ltd.idakhazikitsidwa mu Meyi 2020. Ndi bizinesi yayikulu yopanda nsalu yopanga nsalu kuphatikiza kafukufuku ndi chitukuko, kupanga, ndi malonda. Itha kupanga mitundu yosiyanasiyana ya nsalu za PP spunbond zosalukidwa ndi m'lifupi mwake osakwana 3.2 metres kuchokera pa 9 magalamu mpaka 300 magalamu.