Mitundu yosiyanasiyana ya pulasitiki imatsimikizira kugwiritsidwa ntchito kwake m'makampani.Ndi kupita patsogolo kwaukadaulo, kafukufuku wokhudza kusintha kwa pulasitiki sanayime.Kodi mapulasitiki ali ndi mawonekedwe otani?
1. Mapulasitiki ambiri ndi opepuka, osasunthika, ndipo sachita dzimbiri;
2. Kukana kwamphamvu kwabwino;
3. Ili ndi kuwonekera bwino komanso kukana kuvala;
4. Kutsekemera kwabwino komanso kutsika kwamafuta otsika;
5. Maonekedwe ambiri ndi colorability ndi zabwino, ndipo mtengo processing ndi otsika;
6. Mapulasitiki ambiri amakhala ndi kutentha kosasunthika, kuwonjezereka kwa kutentha kwapamwamba komanso kosavuta kuyaka;
7. Kusakhazikika bwino komanso kosavuta kupunduka;
8. Mapulasitiki ambiri amakhala ndi kukana kutentha kochepa, amakhala osasunthika pa kutentha kochepa komanso kosavuta kukalamba;
9. Mapulasitiki ena amasungunuka mosavuta mu zosungunulira.
10. Pulasitiki akhoza kugawidwa m'magulu awiri: thermosetting ndi thermoplastic.Zakale sizingapangidwenso kuti zigwiritsidwe ntchito, ndipo zotsirizirazi zikhoza kupangidwanso.Thermoplasticity imakhala ndi kutalika kwakukulu kwa thupi, nthawi zambiri 50% mpaka 500%.Mphamvu sizimasiyana motsatira mzere pamatali osiyanasiyana.
Pali mitundu iwiri ya mamolekyu a mapulasitiki: yoyamba ndi yozungulira, ndipo polima yomwe ili ndi dongosololi imatchedwa mzere wa polima;chachiwiri ndi mawonekedwe a thupi, ndipo polima pawiri ndi dongosolo limeneli amatchedwa pawiri.Ndi gulu la polima lambiri.Ma polima ena ali ndi maunyolo a nthambi, otchedwa ma polima a nthambi, omwe ndi amtundu wa mzere.Ngakhale ma polima ena ali ndi maulalo pakati pa mamolekyu, koma maulalo ocheperako, omwe amatchedwa mawonekedwe a network, ndi a thupi.
Zomanga ziwiri zosiyana, zosonyeza zinthu ziwiri zosiyana.Liniya dongosolo, Kutentha akhoza kusungunuka, zochepa kuuma ndi brittleness.Mapangidwe a thupi ali ndi kuuma kwakukulu ndi brittleness.Pulasitiki ili ndi mitundu iwiri ya ma polima, ma thermoplastics opangidwa ndi ma polima amzere, ndi mapulasitiki otenthetsera opangidwa ndi ma polima ambiri.
Nthawi yotumiza: Jul-23-2022