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Ndeapi marudzi epurasitiki modification nzira?
2021-03-08 22:40  Click:531

1. Tsanangudzo yepurasitiki:

Plastiki chinhu chine yakakwirira polymer sechinhu chikuru chinhu. Iyo inoumbwa neyakagadzirwa resin uye mafillers, plasticizers, stabilizers, lubricants, pigments uye zvimwe zvinowedzera. Iyo iri mune yakasviba mamiriro panguva yekugadzira uye kugadzirisa kugadzirisa modelling, Inopa yakasimba chimiro kana iko kugadzirisa kwapera. Chinhu chikuru chepurasitiki is synthetic resin. "Resin" inoreva polymer repamusoro-soro risina kusanganiswa nezvakawedzerwa zvakasiyana. Iyo resin inosvika 40% kusvika 100% yehuremu hwese hwepurasitiki. Izvo zvakakosha zveplastics zvinonyanya kutemerwa neiyo midziyo yeineti, asi zvinowedzerawo zvinoita basa rakakosha.

2. Zvikonzero zvekushandurwa kwepurasitiki:

Izvo zvinonzi "plastiki modification" inoreva nzira yekuwedzera imwe kana zvimwe zvimwe zvinhu mupurasitiki resin kuti ichinje mashandiro ayo epakutanga, kugadzirisa imwe kana zvimwe zvinhu, uye nokudaro kuzadzisa chinangwa chekuwedzera kukura kwayo kwekushandisa. Zvinhu zvakagadziridzwa zvepurasitiki zvakabatana zvinonzi "mapurasitiki akachinjwa".

Kugadziriswa kwepurasitiki kunoreva kushandura zvivakwa zvemapurasitiki munzira inotarisirwa nevanhu kubudikidza nemuviri, makemikari kana nzira mbiri, kana kudzikisa zvakanyanya mutengo, kana kugadzirisa zvimwe zvinhu, kana kupa mapurasitiki Basa idzva rechinhu. Iyo yekushandurwa maitiro inogona kuitika panguva yekushandurwa kweiyo synthetic resin, ndiko kuti, makemikari ekushandurwa, senge copolymerization, kubatanidza, crosslinking, nezvimwewo, zvinogona kuitiswa panguva yekugadziriswa kweyakagadzirwa resin, ndiko kuti, kuchinjwa kwemuviri, senge kuzadza uye kubatanidza polymerization. Kusanganisa, kusimudzira, nezvimwe.

3.Mhando dzepurasitiki modification nzira:

1) Kusimbisa: Chinangwa chekuwedzera kuomarara uye simba rezvinhu zvinoitwa nekuwedzera mafirita kana maflaya mafirita akadai segirazi faibha, kabhoni faibha, uye mica upfu, senge girazi faibha yakasimbisa nylon inoshandiswa muzvishandiso zvemagetsi.

2) Kubata: Chinangwa chekuvandudza kuomarara uye simba repurasitiki kunoitwa nekuwedzera rabha, thermoplastic elastomer uye zvimwe zvinhu mupurasitiki, senge yakasungwa polypropylene inowanzo shandiswa mumotokari, midziyo yemumba uye zvinoshandiswa mumaindasitiri.

3) Kubatanidza: zvakafanana kusanganisa maviri kana anopfuura asingakwani anowirirana epolymer zvigadzirwa kuita macro-inoenderana uye micro-chikamu-chakaparadzaniswa musanganiswa kuzadzisa zvimwe zvinodiwa maererano nemuviri uye zvemagetsi zvivakwa, oparesheni zvivakwa, uye kugadzirisa zvivakwa. Nzira inodikanwa.

4) Kuzadza: Chinangwa chekuvandudza epanyama uye echimakanika zvivakwa kana kudzikisa mutengo kunoitwa nekuwedzera mafiringi kune epurasitiki.

5) Dzimwe shanduko: senge kushandiswa kweanodzora mafafitera kudzikisa kusagadzikana kwemagetsi kwepurasitiki; iyo yekuwedzera antioxidants uye yakajeka stabilizers yekuvandudza mamiriro ekunze kusagadzikana kwechinhu; kuwedzerwa kwemavara uye dhayi kuti uchinje ruvara rwezvinhu; kuwedzerwa kwemafuta ekunze nekunze ekugadzira iwo mashandiro Kugadziriswa kwekuita kweiyo semi-crystalline plastiki yakagadziridzwa; iyo nucleating mumiriri inoshandiswa kushandura macristalline maitiro eiyo semi-crystalline plastiki kuvandudza ayo mechiki uye oparesheni zvivakwa.
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