Polypropylene inonyunguduka yakavhuvhuta isiri-yakarukwa kugadzirwa kwejira
Nyunguduka jira risingarukwa
Overview
Kushandiswa kwakasiyana kana mazinga emasiki ekudzivirira uye zvipfeko zvinoshandisa zvinhu zvakasiyana-siyana uye nzira dzekugadzirira, seyepamusoro-soro yemasiki ekudzivirira ekurapa (akadai seN95) uye zvipfeko zvekudzivirira, matatu kusvika mashanu akaturikidzana easina kurukwa machira anoumbwa, anoti SMS kana SMMMS musanganiswa.
Iyo inonyanya kukosha yeiyi midziyo yekudzivirira ndeye barrier layer, iyo inonyungudika-inoputika isina-yakarukwa layer M, iyo fiber dhayamita yedhizari yakanaka, 2 ~ 3μm, inoita basa rakakosha mukudzivirira kupinza kwebhakitiriya neropa. .Iro jira remicrofiber rinoratidza sefa yakanaka, kufema kwemhepo uye kushambadza, saka rinoshandiswa zvakanyanya mukusefa zvinhu, zvinhu zvinopisa, hutsanana hwekurapa uye mamwe minda.
Polypropylene inonyungudika yakavhuvhuta isiri-yakarukwa machira ekugadzira tekinoroji uye maitiro
Kunyunguduka kusinga kurukwa machira ekugadzira machira anowanzo kuve epolymer resin chidimbu chekudyisa → nyungudutsa extrusion → nyungudutsa tsvina kusefa → metering pombi yakarurama metering → spinet → mesh → kumucheto kupeta → kugadzirisa chigadzirwa.
Iyo musimboti wekunyungudika kufefetera maitiro ndeyekuburitsa polymer kunyungudika kubva ku spinneret gomba remusoro wekufa kuita kuyerera kwakatetepa kwekunyungudika.Panguva imwecheteyo, mhepo yepamusoro-soro uye yepamusoro-soro inoyerera kumativi ose e-spinet hole sprays uye inotambanudza rukova rwakanyunguduka, iyo inobva yanatswa kuva filaments neine fineness ye 1 ~ 5μm chete.Mafilamende aya anobva adhonzwa kumafaibha mapfupi angaita 45mm nekuyerera kwemafuta.
Kuti udzivise mhepo inopisa kubva pakuvhuvhuta iyo pfupi fiber yakaparadzana, mudziyo wekutsvaira wevacuum unogadzwa (pasi peiyo coagulation skrini) kuti uunganidze zvakaenzana microfiber inoumbwa nekumhanya-mhanya kwemhepo inopisa.Chekupedzisira, inotsamira pakuzvinamira pakugadzira jira risina kuruka rinonyungudutswa.
Main process parameters:
Zvinhu zvepolymer raw materials: zvinosanganisira rheological properties ye resin raw materials, ash content, hama molecular mass distribution, etc. Pakati pavo, rheological properties yeraw materials ndiyo inonyanya kukosha indekisi, inowanzoratidzwa ne melting index (MFI).Iyo yakakura iyo MFI, zviri nani kunyungudika kwemvura yezvinhu, uye zvinopesana.Iyo yakadzikira iyo molecular huremu hweiyo resin zvinhu, iyo yakakwira iyo MFI uye yakadzika iyo yakanyunguduka viscosity, iyo inonyanya kukodzera kunyunguduka kuvhuvhuta maitiro nekutadza kunyora.Kune polypropylene, iyo MFI inodiwa kuti ive pakati pe400 ~ 1800g / 10mIN.
Mukuita kwekunyungudusa kuvhuvhuta kugadzirwa, maparamendi akagadziridzwa zvichienderana nekudiwa kwezvinhu zvakagadzirwa uye zvigadzirwa zvinonyanya zvinosanganisira:
(1) Sungunusa extrusion uwandu kana tembiricha isingaperi, iyo extrusion huwandu hunowedzera, iyo yakanyungudutswa inoputika nonwoven yakawanda inowedzera, uye simba rinowedzera (rinoderera mushure mekusvika peak kukosha).Hukama hwayo nefiber dhayamita mutsara hunowedzera, huwandu hweextrusion hwakawandisa, iyo fiber dhayamita inowedzera, nhamba yemidzi inoderera uye simba rinoderera, chikamu chekubatanidza chinoderera, chichikonzera uye silika, saka simba rehukama rejira risiri rakarukwa rinoderera. .
(2) tembiricha yenzvimbo yega yega screw haina hukama chete nekutsetseka kweiyo kutenderera maitiro, asi zvakare inokanganisa kutaridzika, kunzwa uye kuita kwechigadzirwa.Tembiricha yakakwira zvakanyanya, pachave ne "SHOT" block polymer, machira akaremara anowedzera, akatyoka fiber kuwedzera, kuoneka "kubhururuka".Tembiricha isina kufanira Settings inogona kukonzera kuvharika kwemusoro wesprinkler, kupera simba re spinneret, uye kukuvadza mudziyo.
(3) Tambanudza tembiricha yemhepo inopisa Kutambanudza tembiricha yemhepo inopisa kunowanzo kuratidzwa nekupisa kwemhepo (kudzvanywa), kune kukanganisa kwakananga pakunaka kwefiber.Panyaya yemamwe maparamendi akafanana, wedzera kumhanya kwemhepo inopisa, fiber kuonda, fiber node inowedzera, yunifomu simba, simba rinowedzera, isina-yakarukwa kunzwa inova yakapfava uye yakatsetseka.Asi kumhanya kwakakurisa, nyore kuoneka "kubhururuka", kunokanganisa kutaridzika kwejira risiri rakarukwa;Nekuderera kwevelocity, iyo porosity inowedzera, kupikisa kwesefa kunoderera, asi kusefa kwakanaka kunoderera.Izvo zvinofanirwa kucherechedzwa kuti kupisa kwemhepo kunopisa kunofanirwa kunge kuri pedyo nekunyunguduka kunyungudika, kana zvisina kudaro kubuda kwemhepo kunogadzirwa uye bhokisi richakuvadzwa.
(4) Kunyunguduka tembiricha Kunyunguduka tembiricha, inozivikanwawo sekunyunguduka kwemusoro tembiricha, ine hukama zvakanyanya nekunyunguduka kwemvura.Nekuwedzera kwekushisa, iyo yakanyunguduka fluidity inova nani, viscosity inoderera, iyo fiber inova yakanaka uye kufanana kunova nani.Zvisinei, iyo yakaderera viscosity, zviri nani, yakaderera viscosity, inokonzera kuwandisa kunyora, fiber iri nyore kuputsa, kuumbwa kwe-ultra-short microfiber inobhururuka mumhepo haigoni kuunganidzwa.
(5) Kugamuchira chinhambwe Kugamuchira chinhambwe (DCD) zvinoreva chinhambwe chiri pakati pespinneret neketeni remambure.Iyi parameter ine yakanyanya kukosha pesvedzero pakusimba kwefiber mesh.Nekuwedzera kweDCD, simba uye kupfugama kuomarara kunoderera, iyo fiber dhayamita inoderera, uye nzvimbo yekubatanidza inoderera.Naizvozvo, jira risiri rakarukwa rakapfava uye rakapfava, iyo permeability inowedzera, uye kupikisa kwesefa uye kusefa kwakanaka kunoderera.Kana kureba kwakanyanyisa, kunyorwa kwefiber kunoderedzwa nemhepo inopisa inoyerera, uye kusungirirwa kuchaitika pakati pemafibhi mukugadzirisa kwekunyora, zvichiita kuti filaments.Kana iyo nzvimbo yekugamuchira iri diki kwazvo, iyo fiber haigone kutonhodzwa zvachose, zvichikonzera waya, isina-yakarukwa jira simba rinoderera, brittleness inowedzera.
