Polypropylene (PP) jira risiri rakarukwa rinoshandiswa zvakanyanya nekuda kwekuita kwayo kwakanaka, nzira dziri nyore dzekugadzirisa, uye mutengo wakaderera. Kunyanya mumakore achangopfuura, yakashandiswa zvakanyanya muminda yakadai sehutano, zvipfeko, kurongedza zvinhu, zvekupukuta, zvekufukidzira zvekurima, geotextiles, maindasitiri kusefa zvinhu, nezvimwewo, uye ine maitiro ekutsiva ayo echinyakare zvinhu.
Nekuda kweiyo isiri-polar dhizaini yePP, iyo isinganyanye ine hydrophilic mapoka, PP isiri-yakarukwa jira harina kunyura kwemvura kuita. Hydrophilic kugadziridzwa kana kupedzisa kwakakosha kugadzira hydrophilic PP nonwoven machira.
I. Nzira yekugadzirira machira e-hydrophilic asina kuruka
Kuti uvandudze hydrophilicity yePP nonwoven machira, pane kazhinji nzira mbiri dzekuvandudza kunyorova kwavo kwepamusoro: kugadziridzwa kwemuviri uye kugadzirwa kwemakemikari.
Kemikari inogadziriswa inonyanya kushandura mamolecular chimiro chePP uye inowedzera hydrophilic mapoka kune macromolecular cheni, nekudaro ichichinja hygroscopicity yayo. Kune kunyanya nzira dzakadai secopolymerization, kubatanidza, kubatanidza, uye chlorination.
Kuchinja kwemuviri kunonyanya kushandura chimiro chepamusoro chemamorekuru kuti avandudze hydrophilicity, kunyanya kuburikidza nekusanganisa kuchinjika (kusati kwatenderera) uye kuchinjika kwepasi (mushure mekutenderera).
II. Yakasanganiswa shanduko (kutenderera pre modification)
Zvinoenderana neakasiyana ekuwedzera nguva dzeakagadziridzwa ekuwedzera, anogona kukamurwa kuita masterbatch nzira, yakazara granulation nzira, uye spin coating agent jekiseni nzira.
(1) Yakajairika ruvara masterbatch nzira
Iyi inzira yakakosha yekugadzira machira e hydrophilic asiri akarukwa nevagadziri vemachira asina kuruka.
Chekutanga, akajairwa hydrophilic ekuwedzera anogadzirwa kuita jellyfish zvimedu nevagadziri vehuni, uye obva asanganiswa nePP kutenderera kugadzira jira.
Zvakanakira: Kugadzirwa kwakareruka, hapana chikonzero chekuwedzera chero midziyo, yakakodzera kune diki batch kugadzirwa kwemombe, kuwedzera kune yakasimba hydrophilic durability.
Kuipa: Kunonoka hydrophilicity uye kusashanda zvakanaka kwekugadzirisa, kunowanzo shandiswa mukuruka machira. Mutengo wepamusoro, 2 kusvika ku3 nguva dzakakwirira pane kuchinjwa kwepasi.
Urombo husina kunaka hunoda kugadziriswa kwemaitiro. Vamwe vatengi vakaparadza matani mashanu ejira kubva kumafekitori maviri emavara masterbatch vasina kugadzira zvigadzirwa zvapera.
(2) Full granulation nzira
Sanganisa iyo modifier, PP zvimedu, uye zvinowedzerwa zvakaenzana, zvigovere pasi pescrew kuti ibudise hydrophilic PP zvidimbu, wobva wanyungudusa nekuzviputira mumucheka.
Zvakanakira: Yakanaka processability, inogara kwenguva refu mhedzisiro, uye inogona kushandiswazve jira.
Zvakaipa: Yekuwedzera screw extruder midziyo inodiwa, zvichikonzera mutengo wepamusoro patani uye inononoka hydrophilicity, zvichiita kuti ingokodzera kugadzirwa kwakakura.
(3) Fangqian Jekiseni
Wedzera zvakananga hydrophilic reagents, kureva hydrophilic polymers, kune guru guru remachira asiri akarukwa uye sanganisa iwo nePP melt kuitira kutenderera kwakananga.
Zvakanakira: Mhedzisiro yacho inogara kwenguva refu uye jira rinogona kushandiswa zvakare.
Zvakaipa: Nekuda kwekusakwanisa kusanganisa zvakaenzana, kutenderera kunowanzo kuoma uye kunoshaya kufamba.
III. Surface hydrophilic kupedzisa (mushure mekutenderera kurapwa)
Hydrophilic finishing inzira yakapfava, inoshanda, uye isingadhuri yekugadzira machira e hydrophilic asiri akarukwa. Vazhinji vevagadziri vedu vasina kurukwa machira vanonyanya kushandisa nzira iyi. Nzira huru ndeyotevera:
Pamhepo spunbond inopisa-yakakungurutswa isina-yakarukwa jira - roller coating kana mvura yekupfapfaidza hydrophilic agent - infrared kana mhepo inopisa.
Zvakanakira: Hapana nyaya dze spinnability, inokurumidza hydrophilic mhedzisiro yejira risiri rakarukwa, kushanda kwakanyanya, mutengo wakaderera, iri 1/2-1/3 yemutengo weyakajairwa ruvara masterbatch. Inokodzera kugadzirwa kukuru;
Kukanganisa: Zvinoda kutengwa kwezvinhu zvakasiyana-siyana zvekugadzirisa, izvo zvinodhura. Mushure mekugeza katatu, nguva yekupinda kwemvura inowedzera kusvika ka15. Kutadza kuzadzisa zvinodiwa zvekushandisazve;
Kugadzirwa kwakawanda;
Zvakanakira nekuipira kweiyi nzira inoona kuti inonyanya kushandiswa kune zvinoraswa zvigadzirwa zvinoda yakakwira permeability uye hydrophilicity, senge zvinhu zvehutsanana, manapukeni, sanitary napkins, nezvimwe.
Ⅳ.Kushandisa Complex Hydrophilic Particle PPS03 Method
Tichifunga zvakanakira nekuipira kwe (-) uye (ii) nzira, inosanganiswa hydrophilic amai particle PPS030 yakagadzirwa.
Iyi mhando yejellyfish particle ine hunhu hwepakati dosage (yakafanana neyakajairwa jellyfish particles), kukurumidza kuita, kukurumidza kupararira mhedzisiro, hunhu hwakanaka, hunogara kwenguva refu, kugeza kwakanaka kuramba, asi mutengo wakakwira zvishoma (wakafanana neakajairwa jellyfish particles).
Yakanaka spinnability, hapana chikonzero chekugadzirisa maitiro ekugadzira.
Inokodzera kugadzirwa kwebatch diki uye yakakwira yekuwachisa kuramba, zvigadzirwa zvinogona kushandiswa zvakare semasango uye machira ekurima.
Iwo makuru ekuongorora zviratidzo zve hydrophilic PP isiri-yakarukwa jira rinosanganisira kunyudza mvura, yekubata kona, uye capillary maitiro.
(1) Chiyero chekunyura kwemvura: inoreva huwandu hwemvura inonyudzwa pachikamu chemachira e hydrophilic nonwoven jira mukati menguva yakajairwa kana nguva inodiwa kunyorovesa zvizere zvinhu. Iyo yakakura kunyura kwemvura, zviri nani kuita.
(2) Bata angle nzira: Isa hydrophilic PP jira risiri rakarukwa pane yakachena uye yakatsetseka girazi ndiro, riise sandara pachoto, uye rega rinyunguduke. Mushure mekunyunguduka, bvisa ndiro yegirazi uye uitonhodze zvagara kusvika kukushisa kwekamuri. Pima iyo equilibrium yekubata kona uchishandisa yakananga nzira dzekuyedza. Iyo idiki iyo yekuona kona, zviri nani. (PP isiri-yakarukwa jira isina hydrophilic kurapwa mushure mekusvika anenge 148 ° C).
Nguva yekutumira: Zvita-04-2023