1. Nhamba yekusviba
Nhamba ye viscosity inoratidza avhareji yehuremu hwemamorekuru e resin uye ndiyo hunhu hukuru hwekusarudza rudzi rwe resin. Hunhu uye mashandisirwo e resin zvinosiyana zvichienderana nekusimba kwayo. Sezvo mwero we polymerization ye resin yePVC uchiwedzera, hunhu hwemakanika hwakadai sesimba rekudhonza, simba rekukanganisa, simba rekupwanyika, uye kureba pakuputsika hunowedzera, nepo simba remubereko richiderera. Mhedzisiro yekutsvagisa inoratidza kuti sezvo mwero we polymerization yePVC processing aids uchiwedzera, hunhu hwekutanga hwe resin hunovandudzika, nepo mashandiro ekugadzirisa uye maitiro e rheological achiderera. Zvinogona kuonekwa kuti kugoverwa kwehuremu hwemamorekuru kwePVC resin kune hukama hwepedyo nekugadzirwa kwepurasitiki uye mashandiro echigadzirwa.
2. Kuwanda kwezvimedu zvisina kuchena (madotsi matema neyero)
Zvidimbu zvisina kuchena chimwe chezviratidzo zvakakosha zvekuongorora resin yePVC. Zvinhu zvikuru zvinokanganisa chiratidzo ichi ndeizvi: chekutanga, zvinhu zvakasara pamadziro ekufukidza kettle yepolymerization hazvina kugezwa zvakanaka uye zvinhu zvakasvibiswa zvakasvibiswa netsvina; chechipiri, kupfeka kwemuchina kwakasanganiswa netsvina uye kushanda zvisina kunaka kunounza tsvina; Mukugadzirwa kwepurasitiki, kana paine zvidimbu zvakawandisa zvisina kuchena, zvichava nemigumisiro yakaipa pakushanda nekushandiswa kwezvigadzirwa zvePVC zvinogadzirwa. Semuenzaniso, mukugadzirwa uye kuumbwa kwemaprofiles, kune tsvina dzakawanda, izvo zvinogona kukonzera kuti mavara aoneke pamusoro peprofile, nokudaro zvichideredza kutaridzika kwechigadzirwa. Pamusoro pezvo, nekuda kwekusagadzirwa kwezvidimbu zvisina kuchena kana simba shoma pasinei nekugadzirwa kwepurasitiki, hunhu hwemuchina hwechigadzirwa hunoderera.
3. Kusagadzikana (kusanganisira mvura)
Chiratidzo ichi chinoratidza kudzikira kwehuremu hwe resin mushure mekupiswa patembiricha yakati. Huremu hushoma hwezvinhu zvinoshanduka hunogona kugadzira magetsi asingachinji, izvo zvisingakodzeri mashandiro ekudyisa panguva yekugadzirisa nekuumba; Kana huremu hunoshanduka hukanyanya, resin inowanzo kuungana uye kusayerera zvakanaka, uye mabhuru anogadzirwa zviri nyore panguva yekugadzira nekuumba, izvo zvine mhedzisiro yakaipa pamhando yechigadzirwa.
4. Kuwanda kuri pachena
Huremu hunoonekwa pahuremu hwePVC resin powder husingamanikidzwi. Hune chekuita nechimiro cheparticle, avhareji yehukuru hweparticle, uye kugoverwa kweparticle size yeresin. Huremu hushoma, huwandu hukuru, kukurumidza kunyudzwa kweplasticizers, uye nyore kugadzira. Kusiyana neizvi, huwandu hwakawanda hweparticles uye huwandu hudiki zvinotungamira mukunyudzwa kwePVC processing aid. Pakugadzira zvigadzirwa zvakaoma, zvinodiwa zvemamorekuru huremu hazvina kukwira, uye maplasticizers haawanzo kuwedzerwa panguva yekugadzira. Naizvozvo, porosity yeparticles yeresin inofanirwa kunge yakaderera, asi pane chinodiwa kuti resin iome, saka huwandu hunoonekwa hweresin hwakakwirawo.
5. Kunyudzwa kwepurasitiki kweresin
Huwandu hwePVC hunobatsira mukugadzirisa hunoratidza mwero wemaburi ari mukati mezvimedu zve resin, nekukwira kwemafuta uye maburi makuru. Resin inonwisa mapurasitiki nekukurumidza uye ine mashandiro akanaka ekugadzirisa. Pakuumbwa kwe extrusion (senge ma profiles), kunyangwe chinodiwa chekuva nemaburi e resin chisina kukwira zvakanyanya, maburi ari mukati mezvimedu ane mhedzisiro yakanaka ye adsorption pakuwedzerwa kwezvimedu panguva yekugadzirisa, zvichikurudzira kushanda kwezvimedu.
6. Kuchena
Kuchena kunoratidza chitarisiko neruvara rweresin, pamwe nekuora kunokonzerwa nekusagadzikana kwekupisa kana nguva yakareba yekuchengeta, zvichikonzera kudzikira kukuru kwechena. Kuchena kwacho kune simba guru pakuramba kwemiti nezvigadzirwa.
7. Zvasara zve vinyl chloride
VCM residue inoreva chikamu cheresin chisina kunyungudutswa kana kunyungudutswa mu polyethylene monomer, uye kugona kwayo kunyungudutswa kunosiyana zvichienderana nerudzi rweresin. Muzvinhu chaizvo zveVCM residue, zvinhu zvikuru zvinosanganisira tembiricha yakaderera yetower yekubvuta, mutsauko wakanyanya mutower, uye chimiro chisina kunaka che resin particle, zvese izvi zvinogona kukanganisa kusvibiswa kweVCM residue, chinova chiratidzo chekuyera huwandu hwehutsanana hweresin. Kune zvigadzirwa zvakakosha, zvakaita se tin foil hard transparent film packaging bags dzemishonga yekurapa, huwandu hweVCM hweresin hwasara hahusviki padanho repamusoro (pasi pe 5PPM).
8. Kugadzikana kwekupisa
Kana mvura iri mumonomer yakakwira zvakanyanya, inoburitsa acidity, inoparadza michina, inoumba sisitimu yesimbi inogadzirisa makemikari, uye pakupedzisira inokanganisa kugadzikana kwekupisa kwechigadzirwa. Kana hydrogen chloride kana free chlorine iri mumonomer, ichava nemigumisiro yakaipa pakuita kwepolymerization. Hydrogen chloride inowanzo kuumbwa mumvura, izvo zvinoderedza pH kukosha kwepolymerization system uye zvinokanganisa kugadzikana kwepolymerization system. Pamusoro pezvo, huwandu hwakawanda hweacetylene mumonomer yechigadzirwa hunokanganisa kugadzikana kwekupisa kwePVC pasi pesimba re synergistic reacetaldehyde nesimbi, izvo zvinokanganisa mashandiro ekugadzirisa kwechigadzirwa.
9. Sefa zvasara
Chinosara musefa chinoratidza mwero wehukuru hwezvimedu zvisina kuenzana zveresin, uye zvinhu zvikuru zvinopesvedzera huwandu hwechinopararira mufomura yepolymerization uye mhedzisiro yekusanganisa. Kana zvimedu zveresin zvakakora zvakanyanya kana kuti zvakapfava zvakanyanya, zvinokanganisa giredhi reresin uye zvine simba pakugadzirisa chigadzirwa chinotevera.
10. "Ziso reHove"
"Hove eye", inozivikanwawo se crystal point, inoreva zvidimbu zve resin zvinoonekera zvisina kugadzirwa nepurasitiki pasi pemamiriro ezvinhu akajairwa ekugadzirisa thermoplastic. Mhedzisiro mukugadzirwa chaiko. Chinhu chikuru che "fish eye" ndechekuti kana huwandu hwezvinhu zvinofashaira zvakanyanya mu monomer hwakakwira, hunonyungudutsa polymer iri mukati mezvidimbu panguva ye polymerization process, hunoderedza porosity, hunoita kuti zvidimbu zviome, uye hunova "fish eye" yenguva pfupi panguva yekugadzirwa kwepurasitiki. Chinotangisa chinogoverwa zvisina kuenzana mumadonhwe emafuta e monomer. Mu polymerization system ine kutamiswa kwekupisa kusina kuenzana, kuumbwa kwe resin ine huremu husina kuenzana, kana kusachena kwe reactor panguva yekudya, residual resin, kana kunamira zvakanyanya kwe reactor zvinhu zvese zvinogona kukonzera "fisheye". Kuumbwa kwe "fish eyes" kunokanganisa zvakananga mhando yezvigadzirwa zvePVC, uye mukugadzirisa kunotevera, kuchakanganisa runako rwepamusoro rwezvigadzirwa. Zvichaderedzawo zvakanyanya hunhu hwemakanika senge simba rekusunga uye kureba kwezvigadzirwa, izvo zvinogona kutungamira nyore nyore mukuboorwa kwemafirimu epurasitiki kana machira, kunyanya zvigadzirwa zve cable, izvo zvichakanganisa hunhu hwavo hwekudzivirira magetsi. Ndiyo imwe yezviratidzo zvakakosha mukugadzirwa kweresin uye kugadziriswa kwepurasitiki.
Nguva yekutumira: Chikumi-12-2024
