Pepa repurasitiki, seyakakosha maindasitiri uye vatengi zvinyorwa, inoshandiswa zvakanyanya mukuvaka, kurongedza, kushambadzira, kumakemikari, uye mamwe minda. Kuita kwayo kwakasiyana-siyana uye zvekushandisa zvinonyanya kutsanangurwa nekuumbwa kwayo uye kusarudzwa kwezvinhu. Chinyorwa ichi chichaongorora nzira dzekutanga dzepurasitiki uye kurukurai maitiro ayo anogadzira, kiyi zvinhu zvakabikwa, uye zvakakosha zvehunyanzvi zvinyorwa zvakadzama, uchivavarira kupa zvinonzi maindasitiri ane hukama.
I. Basic Composition nheyo dzepurasitiki pepa
Pepa repurasitiki rinonyanya kugadzirwa kubva kumusoro {} molecular polymers (epurasitiki resins) akagadziriswa kuburikidza nenzira dzemuviri kana makemikari. Izvo zvikamu zvisingabvumirani zvinosanganisira chigadziko chesin, vanowedzera, uye zvinhu zvebetsero. Iyo base resin inosarudza iyo bheji rezvinyorwa zvekutanga zvemukati, kupisa kupesana, uye kudzikama kwemakemikari. Zvakajairika sosi inobatanidza inosanganisira polyethyle (pe), polypropylene (PP), phongo), phong) {} styrene copolymer (abs).
Kuzvidzwa kunoshandiswa kuti ugadzirise chaiyo sheet sheet midziyo, yakadai se:
1. Plasticzeters: Kuvandudza kuchinjika, zvinowanzoshandiswa muPVC mashiti;
2.
3. Mafirita: Akaita seclicum carbonate uye talc, kuderedza mari uye kugadzirisa kuomarara;
4. Murazvo unodzoreredza: Simbisa kudzima moto, zvakakodzera kushandiswa mukuvaka uye maindasitiri yemagetsi;
5. Vatariri: Ipa sheets rwiyo rwechinyakare yeaesthetics kana logos.
Ii. Main main nzira dzekuumbwa dzemapurasitiki mashitsi
Papurasitiki pepa inogadzira maitiro akasiyana, uye nzira dzakasiyana dzakanangana zvakananga kufanana, kurongeka kwakashata, uye kugona kugadzirwa. Izvi zvinotevera ndedzimwe nzira dzinowanzoitika:
1. Extrussion
Kuwedzeredza ndeimwe yeanonyanya kushandiswa maitiro ekugadzira mashitsi epurasitiki. Maitiro acho anosanganisira kusanganisa resin pellets ane zvinowedzera, nekuvanyungudika uye nekuzvinyudza, uye nekuputira. Iyi nzira yakakodzera kune thermoplastics yakadai sePE, mapeji, uye PVC. Iyo inopa zvakanakira kuenderera mberi kugadzirwa uye mutengo wakaderera, asi kusagadzikana kwakakora kwakakanganiswa zvakanyanya nekuumbwa kweumbi.
2. Calendering
Iyo nzira yekukara inoshandisa akawanda rollers ine gakava rinodzorwa kuti adzorere mapurasitiki akaumbwa mumashiti akaonda. Maitiro aya akakodzera kune zvigadzirwa zvakaita sePVC uye abs, kugadzira yakakwira {} gloss, yakaderera-}}}}}}}}}}} Kwakanaka kwazvo pane yakakwira kumeso kumeso, asi zvinoda zvakakosha zvekudyara mari uye zvine zvinodiwa zvakanyanyisa pane zvakabikwa pazvinhu zvezvinhu zvinoyerera.
3. Kupisa kupisa
Kupisa kudzvanywa kwakakodzera kune iyo inrmosking mapurasitiki (senge phenolic resins) kana yakakura, matanga matanga. Prepreg kana poow lake zvinhu zvigadzirwa zvinoiswa muumbi uye kurapwa pasi pekupisa kwakanyanya uye nekumanikidza kwakanyanya. Iyi nzira inoshanduka zvakanyanya uye inogona kuburitsa mashizha nemhando dzakaomarara, asi inopa kuderera kwekugadzira uye kwakanyanya simba rekushandisa.
4. Coextrusion uye multilayer composite technologies
Kuti uwedzere kuita kwakazara kwemashiti, maitiro emazuva ano kazhinji anoshandisa mugove kana kuomesa. Semuenzaniso, kupfeka {{1} kudzikisira layer uye barrier layer kunogona kuvezwa neine substrate layer kuti ugadzire yakakwira {} performance composite mashitsi. Coextrusion inoshandisa akawanda ekutora ekutengesa kuti afadze zvinhu zvine unison, kugadzira yakawanda - layer zvivakwa mune imwechete maitiro. Iyo inoshandiswa zvakanyanya muhombe
III. Key Technical Points uye mhando yekudzora
Kuumbwa uye mhando yezvishandiso zvepurasitiki zvinokurudzirwa nezvinhu zvakawanda, zvinosanganisira zvidhori zvezvinyorwa, kuita paramita, uye nekujeka kwemidziyo. Key Kudzora Pfungwa zvinosanganisira:
• Tembiricha yekudziya: Kunyanya kunyima melt tembiricha kunogona kutungamira mukuora, uku kwakanyanya kupisa kwemicheka kunogona kukanganisa kuyerera;
• Dzimba dzekumanikidza: Inovimbisa yunifomu yekugovera yunifomu, kudzivirira mabhuruu uye kusingaenzaniswi.
• Kutonhora Kuroora: Inobata Iro Bheji Crystallinity uye Dimensional Kugadzikana;
• Post {{0} kugadzira maitiro, akadai seUV yekuvhara uye kudhinda kwepamusoro, kunogona kuwedzera kuwedzera kushanda.
Iv. Mhedziso
Iyo nzira yekunyora yePurasitiki yeti pepa inoda kuti ishandurwe yekushandisa zvichienderana nesarudzo yekushandisa. Kubva kuKutswa kwekutanga uye kuchinjanisa kuenda kuPamberi Coextrusion uye kuunza matekinoroji, maitiro ega ega ane zvakanakira zvakasiyana uye chiyero chekushandisa. Mune ramangwana, nekutanga kwezvinhu zvinoshamisa zvemamiriro ezvinhu (senge bio {{2}
