Izindaba Zenkampani

Yiziphi izindlela ezijwayelekile zokubumba ipulasitiki?

I-1) Ukwelashwa kwangaphambili (ukomisa ngepulasitiki noma ukufaka ukwelashwa ngaphambi kokushisa)

2) Ukwakha

3) Umshini (uma kudingeka)

4) Ukuthinta kabusha (de-flashing)

5) Umhlangano (uma kunesidingo) Qaphela: Izinqubo ezinhlanu ezingenhla kufanele zenziwe ngokulandelana futhi azikwazi ukuhlehliswa.

Izici ezithinta ukunemba kobukhulu bokubumba kwepulasitiki:

1) Umthelela wesilinganiso sokuncipha kwezinto ezingavuthiwe

Uma kukhulu ukushwabana kwempahla eluhlaza, kuyancipha ukunemba komkhiqizo. Ngemuva kokuthi izinto zepulasitiki ziqiniswe noma ziguqulwe ngokugcwaliswa kwe-inorganic, izinga layo lokunciphisa lizoncishiswa kakhulu izikhathi ezingu-1-4. Izimo zokucutshungulwa kwePlastiki (izinga lokupholisa nokucindezela komjovo, izindlela zokucubungula, njll.), ukwakheka komkhiqizo kanye nokwakheka kwesikhunta nezinye izici. Ukunemba kokubumba kwezindlela ezihlukene zokubumba kuhlelwe ngendlela eyehlayo: ukubumba umjovo > i-extrusion > i-injection blow blowing > i-extrusion blow molding > ukucindezela ukucindezela > ukubumba kwekhalenda > ukwakhiwa kwe-vacuum

2) Umthelela wokukhasa okuluhlaza (i-creep yi-deformation yomkhiqizo ngaphansi kwengcindezi). Okujwayelekile: Izinto zePlastiki ezinokumelana okuhle kokukhasa: i-PPO, i-ABS, i-PC namapulasitiki alungisiwe aqinisiwe noma agcwaliswe. Ngemuva kokuthi izinto zepulasitiki ziqiniswe noma ziguqulwe ngokugcwaliswa kwe-inorganic, ukumelana kwayo kwe-creep kuzothuthukiswa kakhulu.

3) Umthelela wokunwetshwa komugqa wezinto zokusetshenziswa: i-linear expansion coefficient (i-thermal expansion coefficient)

I-4) Umthelela wezinga lokumuncwa kwamanzi lezinto zokusetshenziswa: Ngemva kokumunca amanzi, umthamo uzokhula, okuholela ekwandeni kosayizi, okuthinta kakhulu ukunemba kobukhulu bomkhiqizo. (Ukumuncwa kwamanzi kwezinto zokusetshenziswa kuzophinde kube nomthelela omubi ezintweni ezibonakalayo nezokusebenza zezinto zokusetshenziswa ngemuva kokuthi zicutshungulwe zaba izingxenye.)

Amapulasitiki anokumunca amanzi aphezulu: njenge-PA, i-PES, i-PVA, i-PC, i-POM, i-ABS, i-AS, i-PET, i-PMMA, i-PS, i-MPPO, i-PEAK Naka izimo zokugcina nokupakisha zala mapulasitiki.

5) Umthelela wokuvuvukala kwezinto zokusetshenziswa Qaphela! ! Ukumelana ne-solvent yezinto ezingavuthiwe kuzothinta kakhulu ukunemba kobukhulu bomkhiqizo kanye nezakhiwo zomzimba nezomshini zomkhiqizo. Ngemikhiqizo yepulasitiki ethintana nemidiya yamakhemikhali, sebenzisa izinto zepulasitiki imidiya yazo engeke ibangele ukuthi zivuvuke.

6) Ithonya lokugcwalisa: Ngemuva kokuthi izinto zepulasitiki ziqiniswe noma zilungiswe ngokugcwaliswa kwe-inorganic, ukunemba kobukhulu bomkhiqizo wepulasitiki kungathuthukiswa.