Pane zvikamu zvitanhatu zvikuru zvemapurasitiki anowanzo shandiswa, polyester (PET polyethylene terephthalate), high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS).
Asi, unoziva nzira yekuziva mapurasitiki aya?Nzira yekuvandudza sei "meso ako anopisa"?Ini ndichakudzidzisa dzimwe nzira dzinoshanda, hazvina kuoma kuziva mapurasitiki anowanzoshandiswa mumasekondi!
Pane angangoita nzira dzinotevera dzekuziva mapurasitiki: chitarisiko chekuonekwa, chitupa chekupisa, density identification, melt identification, solvent identification, nezvimwe.
Nzira mbiri dzekutanga dziri nyore uye dziri nyore kushandisa, uye dzinokwanisawo kuziva marudzi aya emapurasitiki zvakanaka.Iyo density yekuzivisa nzira inogona kuisa mapurasitiki uye inowanzo shandiswa mukugadzira maitiro.Naizvozvo, pano isu tinonyanya kusuma vatatu vavo.
Plastiki yega yega ine hunhu hwayo, ine mavara akasiyana, gloss, pachena,kuoma, etc. Chitarisiko chiziviso ndechekusiyanisa marudzi akasiyana zvichienderana nechitarisiko maitirozvepurasitiki.
Tafura inotevera inoratidza maitiro ekuonekwa kwemapurasitiki akawanda akajairika.Vashandi vane ruzivo rwekugadzirisa vanogona kunyatsosiyanisa marudzi emapurasitiki zvichienderana neaya maitiro ekuonekwa.
Kuonekwa kwekuzivikanwa kwemapurasitiki akawanda anowanzo shandiswa
1. Polyethylene PE
Zvinhu: Kana isina ruvara, ichena semukaka, inopenya, uye namo;chigadzirwa chinonzwa chakatsetseka kana chabatwa neruoko, chakapfava uye chakaoma, uye chakareba zvishoma.Kazhinji, low-density polyethylene yakapfava uye ine pachena zvirinani, nepo high-density polyethylene yakaoma.
Zvigadzirwa zvakajairika: firimu repurasitiki, mabhegi, pombi dzemvura, madhiramu emafuta, mabhodhoro echinwiwa (mabhodhoro emukaka ecalcium), zvinodiwa zvezuva nezuva, nezvimwe.
2. Polypropylene PP
Properties: Ichena, inopenya uye yakisi kana isina ruvara;yakareruka kupfuura polyethylene.Iko kujeka zvakare kuri nani pane polyethylene uye yakaoma kupfuura polyethylene.Yakanakisa kupisa kupisa, kugona kufema zvakanaka, kupisa kupisa kusvika 167°C.
Zvigadzirwa zvakajairika: mabhokisi, mbiya, mafirimu, fenicha, mabhegi akarukwa, mabhodhoro kepisi, mabhampa emota, nezvimwe.
3. Polystyrene PS
Properties: Transparent kana isina ruvara.Chigadzirwa chacho chichaita ruzha rwesimbi painodonhedzwa kana kurohwa.Iine gloss yakanaka uye yakajeka, yakafanana negirazi.Iyo ine brittle uye iri nyore kutyora.Iwe unogona kukwenya pamusoro pechigadzirwa neminwe yako.Modified polystyrene is opaque.
Zvigadzirwa zvakajairika: zvekunyorera, makapu, midziyo yechikafu, midziyo yemumba, midziyo yemagetsi, nezvimwe.
4. Polyvinyl chloride PVC
Zvivakwa: Ruvara rwepakutanga rwakati yero, kupenya uye kupenya.Kujeka kuri nani pane polyethylene uye polypropylene, asi yakaipisisa kupfuura polystyrene.Zvichienderana nehuwandu hwezvinowedzera zvinoshandiswa, zvakakamurwa kuva PVC yakapfava uye yakaoma.Zvigadzirwa zvakapfava zvinochinjika uye zvakaoma, uye zvinonzwa zvakanamira.Zvigadzirwa zvakaomarara zvine kuoma kwakakwira kupfuura yakaderera-density polyethylene asi yakaderera pane polypropylene, uye kuchena kuchaitika pamabhendekete.Inogona chete kumira kupisa kusvika 81°C.
Zvigadzirwa zvakajairika: masosi eshangu, matoyi, waya sheaths, magonhi nemahwindo, zvekunyora, midziyo yekurongedza, nezvimwe.
5. Polyethylene terephthalate PET
Zvivakwa: Kujeka kwakanyanya, kusimba kuri nani uye kusimba kupfuura polystyrene uye polyvinyl chloride, isiri nyore kuputsika, yakatsetseka uye inopenya pamusoro.Inopesana neasidhi uye alkali, isingadziviriri kune tembiricha yakakwira, iri nyore kukanganisa (inogona chete kumira tembiricha iri pasi pe69 ° C).
Zvigadzirwa zvakajairika: kazhinji zvigadzirwa zvemabhodhoro: Mabhodhoro eCoke, mabhodhoro emvura yemamineral, nezvimwe.
pamusoro pe
Iwo matanhatu anowanzo shandiswa mapoka emapurasitiki anogonawo kuzivikanwa nerecycling marks.Mucherechedzo wekudzokorodza kazhinji uri pazasi pemudziyo.Mucherechedzo weChinese inhamba ine manhamba maviri ine "0" kumberi.Mucherechedzo wekunze idijiti imwe chete isina "0".Nhamba dzinotevera dzinomiririra mhando imwechete yepurasitiki.Zvigadzirwa kubva kune vagadziri venguva dzose vane chiratidzo ichi.Kuburikidza nemucherechedzo wekudzokorodza, mhando yepurasitiki inogona kunyatsozivikanwa.
Kune akajairwa emhando dzepurasitiki, nzira yekupisa inogona kushandiswa kuaziva zvakanyanya.Kazhinji, iwe unofanirwa kuve nehunyanzvi mukusarudza uye kuve natenzi kuti akutungamirire kwenguva yakati rebei, kana iwe unogona kuwana akasiyana mapurasitiki uye kuitisa kuyedza kupisa uri wega, uye iwe unogona kuzvigona nekuzvienzanisa nekuzvibata nemusoro kakawanda.Hapana nzira yekudimbudzira.Kutsvaga.Ruvara uye kunhuwa kwemurazvo panguva yekupisa uye nyika mushure mekusiya moto inogona kushandiswa sehwaro hwekuzivikanwa.
Kana rudzi rwepurasitiki rusingagoni kusimbiswa kubva kune chiitiko chekupisa, sampuli dzemhando dzepurasitiki dzinozivikanwa dzinogona kusarudzwa kuti dzienzaniswe nekuzivikanwa kwemigumisiro iri nani.
Plastics ane density dzakasiyana, uye kunyura kwavo uye kuyerera kwavo zviitiko mumvura uye mamwe mhinduro zvakasiyana.Mhinduro dzakasiyana dzinogona kushandiswa kuitasiyanisa marudzi akasiyana.Kuwanda kwemapurasitiki anowanzo shandiswa uye kuwanda kwezvinwiwa zvinowanzo shandiswa zvinoratidzwa mutafura iri pazasi.Zvinwiwa zvakasiyana zvinogona kusarudzwa zvichienderana nemhando dzekuparadzanisa.
PP uye PE inogona kugezwa kubva kuPET nemvura, uye PP, PE, PS, PA, uye ABS inogona kugezwa kunze nesaturated brine.
PP, PE, PS, PA, ABS, uye PC inogona kuyangarara kunze ine saturated calcium chloride aqueous solution.PVC chete ine density yakafanana nePET uye haigone kupatsanurwa kubva kuPET nenzira yekuyangarara.
Nguva yekutumira: Nov-30-2023