Suko inyanzvi PP yakanyunguduka-inoputika michina inogadzira uye mutengesi uye isu takagadzirisa akawanda mashini ekumisheni matambudziko kune vatengi vedu.Isu takanga tapfupikisa matambudziko akasiyana-siyana angangoitika panguva yekunyunguduka kwemuchina wekumisikidza, uye tikagovana navo neshamwari dzese muindastiri.
Nekupararira kweCOVID 19munyika, sechinhu chakakosha chemishonga yekudzivirira kumeso masks - thejira rakanyunguduka, yave protagonist yemusika weCOVID-19 denda.
Iyo yakanyungudutswa inogadzirwa kuburikidza nemhepo inopisa-inomhanya inoyerera kuti ikurumidze kutambanudza uye kuomesa iyo polymer kunyunguduka ichangobva kuburitswa kuita nzira yekutenderera.Zvakanakira ndezvekuti kuyerera kwemaitiro kupfupi, uye jira risiri rakarukwa rinogona kugadzirwa zvakananga nekutenderera.Izvo zvakashata ndezvekuti michina inoda kutumirwa.
Suko inyanzviPP michina yakanyungudukakugadzira uye mutengesi uye isu takagadzirisa akawanda mashini ekumisheni matambudziko kune vatengi vedu.
Takanga tapfupikisa matambudziko akasiyana-siyana angangoitika panguva yekumisikidzwa kwemuchina, uye tikagovana navo neshamwari dzese muindastiri.
Sumo pfupizveMelt-blown Machine
Iyo polymer yakanyungudutswa yakanyungudutswa nescruder extruder inopfapfaidzwa nemhepo inomhanya-mhanya uye yakanyanya-tembiricha kuitira kuti rukova rwekunyunguduka rwakatambanudzwa zvakanyanya kuumba ultra-fine fibers.Aya ma-ultra-fine faibha anomonererwa pamurora kuti aumbe jira resefa risiri rakarukwa.
Kuyerera kwemaitiro: polymer poda kudya → nyunguduka extrusion → faibha kuumbwa → faibha kutonhora → inonamira inosimbisa → yakatemwa inomonereka → isina-yakarukwa sefa jira.
Nhanho dzeMelt-blownMachineComissioning
1. Isa pane tembiricha yepamusoro uye kumanikidzwa kwemhepo kuita kuti muchina wakanyunguduka upfapfaidze jira rakapfava.
2. Zvadaro gadzirisa kutonhora kwekufa uye mhepo inopisa kusvikira jira rinonzwa rakaoma.
3. Rekodha tembiricha yekufa uye tembiricha yenzvimbo yega yega screw.
4. Gadzirisai kudzvanywa kwemhepo, screw speed uye melt extrusion amount kuti jira ripfave zvakare.
5. Rongedza kumhanya kwemhepo kuti uremu hwejira husvike pachiyero.
6. Wedzera ma electrets maviri maererano nekumhanya kwemuunganidzi wejira.Kazhinji, electret iri 5-7 cm kure nemucheka, uye iyo static voltage ndeye 40kv-60kv.Kana kumhanya kwemuunganidzi wejira kuchinonoka, ingo wedzera static electret.
Pakutanga Parameter Settings
1. Kupisa tembiricha: isa 190 ℃ munzvimbo yekutanga, 200 ℃ munzvimbo yechipiri, 210 ℃ munzvimbo yechitatu, nezvimwe.
2. Die musoro tembiricha: 250 ℃ (kazhinji 240-255 ℃).
3. Heating pasuru tembiricha: mukati tembiricha 300 ℃, outlet inopisa mhepo tembiricha 270 ℃.
4. Quick fiber net change, metering pump, die head filter: 240 ℃.
5. Kupisa kwemhepo kunopisa: 0.2-0.4MPa.General yakakwira-yakanyungudika PP zvinhu, iyo mhepo yekumanikidza inogona kuiswa pa 0.2-0.3MPa.Kudzvinyirirwa kwemhepo kwezvinhu zvakatenderedza 1300 kunogona kunge kwakakwira.Seta kudzvanywa kwemhepo zvinoenderana nemashini akasiyana-siyana anonyunguduka uye misoro inofa.
6. Mucheka wakanyunguduka unounganidza kure: 15-25 cm, kunyanya ndeye 15-20 cm.
7. Ukuru hwekubuda kwemhepo hwakafanana nekureba kubva kumucheto wepinneret kusvika kune ndege, 1-2mm.
8. The screw speed ine mwero kana diki (diki mhepo mhepo, diki extrusion vhoriyamu, mhepo huru yemhepo, yakakura extrusion volume).
Kunze kubata
1. Kana jira rakanyunguduka richiri risina kupfava pasi pekushisa kwakanyanya kwekushisa, matambudziko anogona kusanganisira: a.tembiricha sensor dambudziko;b.dambudziko rekudzora tembiricha.Kana matambudziko maviri aya akabviswa, unogona kuwedzera tembiricha kusvika jira rakapfava rakanyungudutswa rabuda.Ziva kuti tembiricha yakawandisa inokonzeresa crystallization phenomena.
2. Midziyo mikuru yakanyunguduka inoshandisa zvinhu zvakanyunguduka zvine kunyunguduka kunosvika 1500, uye midziyo midiki inogona kushandisa zvinhu zvinonyunguduka zvakapoteredza 1300.
3. Kana tembiricha yekufa ikaiswa panenge 210-230 ℃, uye mhepo yekumanikidza iri pasi pe0.2Mpa, muchina unenge uine chiitiko chechinhu chinobhururuka, chinogona kunge chisina kujairika mune zvinotevera: a.tembiricha sensor dambudziko;b.dambudziko remhepo yemhepo;c.saizi uye kona yemhepo yekubuda nayo hazvina kujairika.
4. Kana jira rakanyunguduka richiri risina kunyorova kana kuti rinotanga kuva brittle kana rinowedzerwa kune yakanyanya kupisa, jira rinotanga kunyorova mushure mekuwedzera kuwedzera kwekushisa kwekugadzirisa.Zvizhinji zvezvikonzero matambudziko emuchina wakanyunguduka.Inokurudzirwa kuonana nemugadziri wemidziyo.Zvechokwadi, zvinodiwawo kutonga kunze kwekuti kune matambudziko makuru ehutano nezvinhu.
5. Kuwedzerwa kwe electret master batch mukugadzirwa kunowanzoda kwakakodzera process parameter kugadzirisa kuti ienderane nayo.Uchishandisa akasiyana electret master batches, iyo process parameter marongero eiyo yakafanana melt-blown muchina akasiyana.Iwe unogona kutarisa kune iri pamusoro pekugadzirisa maitiro kugadzirisa jira rakanyungudutswa kune yakanakisa mamiriro, uye wozoenzanisa uye kuyedza kuita.
6. Kuwanda kwehuwandu hwe electret master batch, zviri nani iyo electrostatic effect.Asi mushure mekusvika 6%, mhedzisiro yacho yakawedzera.Iyo yakakwirira yereshiyo yekuwedzera, iyo yakakura mhedzisiro payakapedzwa yakanyungudutswa isina-yakarukwa jira.
Chirevo chectrostatic attenuation
- Mushure mekunge jira rakanyungudutswa rabatwa neelectret, ese eelectret master batch uye PP zvinhu zvinogona kubhadhariswa nemagetsi akamira.Iyo static magetsi pa electret master batch ine shoma shoma yekuwedzera inogona kuwedzera yakagadzikana yekusefa mwero neinenge 10-20%, kuora kunonoka zvakanyanya pasi pekurongedza uye kuchengetedza mamiriro.
2. Kuderera kwehuwandu hwekusefa kunowanzo kukonzerwa nehuwandu hwemagetsi emagetsi attenuation ye static electret uye yakawanda ye melt blown pp.
3. Mamwe machira akanyunguduka akapfava asi kusimba kwawo hakuna kukwana.Sezvo nguva yekuchengetedza ichiwedzera, machira anozoita brittle.Uye zviri nyore kukonzera kudzikira kweyero yekusefa.Aya machira anonyungudutswa anowanzo kugadzirwa pasi pemamiriro ekushisa kwakanyanya kufa uye kupisa kwemhepo.
4. Kusagadzikana filtration rate inogona kuchinjwa nekutevera nzira idzi.Chekutanga pane zvese, pasina kuwedzera electret master batch uye electret kurapwa, gadzira jira rakanyungudutswa nepamusoro pekutanga kusefa kwemuviri.Pahwaro uhwu, hapana kurapwa kwe electret kunogona kuwedzerwa, ingo wedzera electret master batch kuyedza mutsauko mukusefa rate.Nekuti yakanaka electret master batch inogona kuburitsa magetsi akamira panguva yekupepetwa kwemhepo pasina electret kurapwa, iyo inogona kuvandudza mwero wekusefa kwejira rakanyungudutswa.
5. Muviri wefiltration rate yemucheka wakanyunguduka ndiyo nheyo, uye electret master batch ndiyo kiyi kuitira kuti kunyatsogadzikana kwefiltration kubudirira kunogona kuwanikwa.
6. Muchina wakasiyana wakanyunguduka unogona kuita jira rakasiyana-siyana rakanyunguduka, kunyanya kunaka kwekufa.Mimwe muchina unonyungudika unongokwanisa kuwana 85% yekusefa.Kana iwe uchida kusvika 90% kana kupfuura, iwe unoda yepamusoro mhando PP zvinhu.
Kugadzirisa nzira yekunyunguduka-inoputikajirakuva brittle uye yakaoma
1. Kubva pamushini wakanyunguduka, unonyanya kukonzerwa nezvikonzero zvinotevera: a.kuruka zvisina kuenzana, b.kusaenzana kwekupisa kupisa kunokonzerwa nekusakwana kwakashata kwemhepo kudzoka kwemhepo, uye kushushikana kwemukati kunokonzera brittleness.Kuwedzera huwandu hwemhepo yemhepo inotonhora, kugadzirisa kunyunguduka kweiyo extruder, uye kugadzirisa kutonhora kwemhepo inopisa kunogona kuvandudza dambudziko iri.
2. Kubva pakuona kwezvinhu zvePP, shandisa yakaderera-yakanyunguduka grease PP zvinhu zvinogona kuita kuti spinner iwedzere.Mushure mekutonhora uye crystallization zvachose, ichaita kuti jira rakanyungudutswa rive brittle uye rakaoma.Kufarirwa kunopiwa kune zvinhu zvakanyunguduka zvine index yakanyunguduka inenge 1500. Iyo filaments yakaonda, yakapfava uye yakaenzana yakagoverwa, uye iyo inoguma yakanyungudutswa yakanyoroveswa.
3. Kana muvambi weperoxide process mukugadzirwa kwezvinhu zvakanyunguduka hazvina kunyatsogadziriswa, jira rinowanzoita brittle uye zvakaoma matambudziko.Kana iyo PP zvinhu uye tembiricha yekugadziridza yakakwira zvakanyanya, ichave yakanyanyisa mukati meiyo screw uye yakanyanya kuderedzwa nemafuta.Mukugadzira zvinhu, maitiro eperoxide anoda kupedzisa kutyora kwema molecular cheni isati yaburitswa, kudzivirira chechipiri chasara kupinda mukati mejira risiri rakarukwa screw kuti ienderere mberi nekuita.Izvi zvinoda musanganiswa wakanaka werecipe control uye screw equipment.
4. Iko hakuna kudzoka kwemhepo fan yekuunganidza ne roller.Mushure mekuputika, kutonhora kwejira rakanyunguduka rakakwirira uye kupisa hakugoni kukurumidza kupera.Mushure mekutonhora, inova brittle.
5. Pamichina miduku yakanyunguduka, dambudziko re brittleness uye kuomarara rinogona kugadziriswa nekusarudza komputa formula PP raw materials.
Nzira yekuvandudza kuoma kweyakanyunguduka jira
1. Deredza jira rinonyunguduka rinogamuchira kure uye gadzirisa kuyerera kwemhepo inopisa kana tembiricha zvakakodzera.Kana iyo ambient tembiricha yakawandisa, unogona kuwedzera kusveta kwepasi.
2. Deredzai extrusion speed uye kuderedza kubudiswa.
3. Wedzera hunyoro hwefiber uye kuderedza kutenderera ambient tembiricha.
4. Adopt PP zvinhu zvemusanganiswa formula.
Zviri pamusoro apa ipfupiso yezvakaitika zvemushandi wedu.Ehe, matambudziko uye nzira dzekugadzirisa melt-blown muchina zvakanyanya kupfuura izvo zviri pamusoro.Kana uine chero mibvunzo pamushini uye zvinhu, unogona kutibata [email protected]
Nguva yekutumira: May-17-2020