Nekuvandudzwa kwehupenyu hwevanhu uye ruzivo rwehutano, indasitiri yezvigadzirwa zvekurapa zvinoraswa inokura nekukurumidza. Masks anofungidzirwa kusvika mabhiriyoni zana nemakumi maviri nemapfumbamwe akashandiswa nekugadziriswa mwedzi wega wega kubva pakatanga kubuda COVID-129. Zvinhu zvakakosha zvezvigadzirwa izvi hazvisi-biodegradable polypropylene (PP) uye polyethylene terephthalate (PET) fiber nonwovens, izvo zvinokonzera kukanganisa kusingaverengeki kune zvakatipoteredza uye ecosystems. Munguva pfupi yadarika, zvinodikanwa kugadzira zvigadzirwa zvehutsanana zvinoraswa nekushambadzwa kwezvirambidzo zvepurasitiki kana kurambidzwa munyika dzakasiyana siyana nematunhu.

Cellulose ndeimwe yezvakanyanya kuwanda pasi pano, inogona kudzokororwa uye inogona kuparara. Cellulose nonwovens yakashandiswa zvakanyanya mukutarisira kwemunhu, zvizorwa, zvekurapa uye mamwe minda nekuda kwekunaka kwemhepo uye kuchengetwa kwemvura. Nekudaro, cellulose nonwoven jira harina kukodzera kushandiswa zvakananga mune absorptive sanitary zvigadzirwa, nekuti basa guru rerudzi urwu rwechigadzirwa nderekusimudzira kukurumidza kupinza kwemvura mukati meiyo absorption core layer uye zvinodzivirira kudzivirira backosmosis. Basa rezvinhu zvayo zvepamusoro harisi kungobatwa chete nekugadzirwa kwayo kwechimiro chemuviri, asiwo kune chokuita nehydrophilicity. Pamusoro pezvo, kufema ndechimwe chinhu chakakosha chekushandisa kwechigadzirwa, sezvo hunyoro uye kupisa kunogadzirwa nemuviri kunofanirwa kuramba kuchidonhedzwa kuburikidza nemapores anofema kuchengetedza ganda rakaoma uye rakasununguka. Naizvozvo, zvakakosha zvikuru kugadzira cellulose nonwovens ane ese ari hydrophobic uye yakanaka mhepo permeability.

Munguva pfupi yapfuura, Chikwata chekutsvagisa kubva kuDonghua University chakaburitsa bepa rine musoro unoti "Hydrophobic, Breathable cellulose nonwoven for Disposable Hygiene Applications" chinyorwa. Chikwata chekutsvagisa chakakurudzira nzira yakapusa uye inoshanda imwe-nhanho inoshandura zvinobudirira hydrophilic cellulose nonwoven substrate kuita jira rine hydrophobic (mvura yekubata Angle 130 -- 135 °) nekuunza matatu hydrophobic anoshanda mapoka mune cellulose chimiro. Zvinotonyanya kukosha, nekugadzirisa kusungirirwa kwekugadzirisa uye kugadzirisa rudzi uye dhigirii yekutsiva isocyanate, mhepo inoputika yemucheka wakagadziridzwa inogona kuchengetedzwa zvakanaka (± 6%). Mhedzisiro yemhando dzemodhifita uye kutarisisa pane machira magadzirirwo uye akakosha zvivakwa (hydrophobicity, mhepo permeability, kuputsa simba, kuchinjika) zvakaongororwa zvakarongeka.

Mhedzisiro yacho yakaratidza kuti matatu mono-isocyanates (tert-butylisocyanate TBIS, m-toluene isocyanate MTIS uye 3-isocyanate propyl trimethoxysilane ISPTMOS) zvakabatanidzwa zvakabudirira pa cellulose nedanho rimwe chete ammonia esterification. Nekugadzirisa dhigirii yekutsiviwa kwemapoka e-hydrophobic, iyo inherent air permeability yemachira e-hydrophobic inochengetwa padanho rakanakisa (1300-1400 mm / s). Iyo yekubata Angle ye cnW-TBIS (5 wt%) yakagadziridzwa jira ndeye 132.5 °, iri 5.9% yakakwirira kupfuura iyo yekutanga jira (1337 mm / s). Iyo yekubata Angle ye cnW-MTIS (1 wt%) uye CNW-ISPTMOS (0.5 wt%) yakagadziridzwa machira ndeye 132.7 ° uye 134.2 °, zvichiteerana, uye kupenya kwemhepo kwakadzikira zvishoma pane iyo yekutanga jira. Mukuwedzera, simba rekuputsika remachira aya rakakura kudarika 80 N / 5cm, uye kushanduka kwakafanana neiyo yemucheka wepakutanga. Iyo inogona kuzadzisa zvinodiwa zvekuita zveabsorptive sanitary zvigadzirwa.

Uye zvakare, iyo hydrophobicity uye kupenya kwemhepo kunogona kugadziridzwa kune akasiyana marudzi emachira e cellulose kune imwe nhanho. Iyi nzira ine kutungamira kukosha kune mushure mekupedzisira nhanho yeasina wovens.

Zvese zvigadzirwa zvekambani yedu zvinosimbiswa ne GRS (chitupa chiri pamufananidzo), sekuti polyester rubber shinda 1205050/1207575,high twist polyester yarn 75/36 100TPM,polyester shinda 1000d.