Plastiki chinhu chatinowanzoshandisa muhupenyu hwedu hwezuva nezuva. Zvidiki semabhegi epurasitiki, mabhodhoro evana, mabhodhoro ezvinwiwa, mabhokisi emasikati, kuputira epurasitiki, yakakura seyekurima firimu, fanicha, midziyo yemagetsi, kudhinda kwe3D, uye kunyangwe maroketi nezvombo zvinokandwa.
Plastiki ibazi rakakosha rezvinhu zvakagadzirwa nepolymer zvinhu, zvine mhando dzakawanda, goho rakakura uye mafomu akapamhama. Kune akasiyana epurasitiki, anogona kuiswa munzvimbo dzinotevera:
1. Zvinoenderana nehunhu paunopisa, mapurasitiki anogona kukamurwa kuita nesainzi yethermoplastics uye neshemosmetting maererano nemaitiro avo kana vachipisa.
2. Zvinoenderana nerudzi rwekuita panguva yekutanga kwesini mupurasitiki, iyo resini inogona kuganhurwa mumapurasitiki epurasitiki uye mapurasitiki ane polycondense;
3. Zvinoenderana nehurongwa hweiyo resin macromolecule, mapurasitiki anogona kukamurwa kuita mhando mbiri: amorphous plastiki uye crystalline mapurasitiki;
4. Zvinoenderana nezviyero zvekushanda pamwe nekushandisa, mapurasitiki anogona kukamurwa kuita mapurasitiki, mapurasitiki enjiniya, uye mapurasitiki akakosha.
Pakati pavo, epurasitiki-echinangwa mapurasitiki ndiwo anonyanya kushandiswa muhupenyu hwedu hwezuva nezuva. General-chinangwa mapurasitiki anoreva mapurasitiki ane hombe ekugadzira vhoriyamu, yakafara kupa, yakaderera mutengo uye inokodzera yakakura-pamwero mafomu. General-chinangwa mapurasitiki ane akanaka kuumbwa processability, uye inogona kuumbwa muzvigadzirwa zvakasiyana zvinangwa nemaitiro akasiyana. General-chinangwa mapurasitiki anosanganisira polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile / butadiene / styrene (ABS).
Ino nguva ini ndinonyanya kutaura nezve izvo zvikuru zvivakwa uye mashandisiro e polyethylene (PE). Polyethylene (PE) ine yakanakisa yekugadzirisa uye yekushandisa zvivakwa, ndiyo inonyanya kushandiswa zvakasiyana siyana mukugadzirwa kwesimbi, uye kugona kwayo kugadzirwa kwave nenguva kuverengera kutanga pakati pemarudzi ese epurasitiki. Polyethylene resin inonyanya kusanganisira yakaderera-density polyethylene (LDPE), mitsara yakaderera-density polyethylene (LLDPE), uye yakakwirira-density polyethylene (HDPE).
Polyethylene inoshandiswa zvakanyanya munyika dzakasiyana siyana, uye firimu ndiyo mushandisi wayo mukurusa. Iyo inoshandisa ingangoita 77% yepasi-density polyethylene uye 18% yeiyo yakakwira-density polyethylene. Uye zvakare, jekiseni zvigadzirwa zvakaumbwa, mawaya netambo, zvigadzirwa zvine mhango, nezvimwewo zvese zvinotora yavo yekushandisa chimiro Chikuru chiero. Pakati peshanu zvakajairika-chinangwa resini, iko kushandiswa kwe PE chinotanga kutanga. Polyethylene inogona kuumbika kuumbwa kugadzira akasiyana mabhodhoro, magaba, maindasitiri matangi, emabhariri uye nezvimwe midziyo; jekiseni rakaumbwa kugadzira hari dzakasiyana siyana, madhiramu, mabhasiketi, mabhasiketi, mabhasikiti nemimwe midziyo yemazuva ese, masundries ezuva nezuva nemidziyo, nezvimwe; extrusion kuumbwa Gadzira ese marudzi emapombi, mabhanhire, tambo, monofilaments, nezvimwewo. Pamusoro pezvo, inogona zvakare kushandiswa kugadzira waya uye tambo yekupfeka zvinhu uye mapepa ekugadzira. Pakati pekushandisa kwakawanda, iwo maviri makuru vatengi nzvimbo dze polyethylene mapombi uye mafirimu. Nekuvandudzwa kwekuvakwa kwemaguta, firimu rekurima uye dzakasiyana chikafu, machira uye maindasitiri ekuputira maindasitiri, kuvandudzwa kweminda iyi miviri kwave kuwedzera nekuwedzera.
