Enqubweni yokwenza izinto zokusetshenziswa zepulasitiki zepulasitiki, okukodwa noma ngaphezulu kwezimo ezilandelayo kuvame ukwenzeka, njenge-rheology yama-polymers kanye nezinguquko zezakhiwo zomzimba namakhemikhali, ezivame ukubonakaliswa yilezi zakhiwo ezilandelayo:
1. I-Fluidity: I-fluidity ye-thermoplastics ngokuvamile inganqunywa kusukela ochungechungeni lwezinkomba ezifana nesisindo se-molecular, inkomba yokuncibilika, ubude be-Archimedes spiral flow length, i-viscosity ebonakalayo kanye nesilinganiso sokugeleza (ubude benqubo/ubukhulu bodonga lwepulasitiki).hlaziya.
2. I-Crystallinity: Into ebizwa ngokuthi i-crystallization phenomenon ibhekisela esenzweni sokuthi ama-molecule epulasitiki ashintsha kusukela ekuhambeni okukhululekile futhi aphazamiseke ngokuphelele kuma-molecule ayeka ukunyakaza okukhululekile futhi ahlelwe endaweni emile kancane ukuze akhe imodeli yokubonisa i-molecular kusuka kokuncibilikisiwe. isho ukufingqa.
3. Ukuzwela ukushisa: Ukuzwela ukushisa kusho ukuthi amanye amapulasitiki azwela kakhulu ukushisa.Uma isikhathi sokushisa siside ekushiseni okuphezulu noma umphumela wokugunda umkhulu, izinga lokushisa lempahla liyakhula futhi lijwayele ukuguquguquka nokubola.Lapho amapulasitiki angezwani nokushisa ebola, kukhiqizwa izinto ezinjengama-monomer, amagesi, nezinto eziqinile.Ikakhulukazi, amanye amagesi abolile ayacasula, ayagqwala noma anobuthi emzimbeni womuntu, amathuluzi, kanye nesikhunta.
4. I-hydrolysis elula: Ngisho noma amanye amapulasitiki equkethe amanzi amancane kuphela, azobola ngaphansi kwezinga lokushisa eliphezulu, ukucindezela okukhulu, futhi le ndawo ibizwa ngokuthi i-hydrolysis elula.Lawa mapulasitiki (afana ne-polycarbonate) kufanele ashiswe ngaphambili futhi omiswe
5. Ukuqhekeka kokucindezeleka: Amanye amapulasitiki azwela ukucindezeleka, futhi athambekele ekucindezelekeni kwangaphakathi ngesikhathi sokubunjwa, okuyi-brittle futhi kulula ukuqhekeka, noma izingxenye zepulasitiki ziqhekeka ngaphansi kwesenzo samandla angaphandle noma i-solvent.Lesi simo sibizwa ngokuthi i-stress cracking.
6. Ukuphuka kwe-Ncibilikisa: I-polymer encibilika ngezinga elithile lokugeleza idlula imbobo yombhobho ezingeni lokushisa elingashintshi.Lapho izinga lokugeleza lidlula inani elithile, ukuqhekeka okusobala okunqamulayo kwenzeka endaweni encibilikayo, okubizwa ngokuthi ukuphuka kwencibilika.Uma izinga lokuncibilika likhethiwe Lapho ukhiqiza izinto zokusetshenziswa zepulasitiki zekhwalithi ephezulu, imibhobho, izigijimi, nezimbobo zokuphakelayo kufanele zikhuliswe ukuze kuncishiswe isivinini somjovo nokucindezela, futhi kwandise izinga lokushisa lempahla.
Izithenjwa
[1] Zhong Shuheng.Ukwakheka Kombala.I-Beijing: I-China Art Publishing House, ngo-1994.
[2] Iculo elithi Zhuoyi et al.Plastic izinto zokusetshenziswa kanye izithasiselo.I-Beijing: I-Science and Technology Literature Publishing House, ngo-2006.
[3] Wu Lifeng et al.I-Masterbatch User Manual.I-Beijing: Chemical Industry Press, 2011.
[4] U-Yu Wenjie et al.Izithasiselo zePlastiki kanye Nobuchwepheshe Bokuklama Ukuklama.Uhlelo lwesi-3.I-Beijing: Chemical Industry Press, 2010.
[5] Wu Lifeng.I-Plastic Coloring Formulation Design.Uhlelo lwesi-2.I-Beijing: Chemical Industry Press, 2009
Isikhathi sokuthumela: Jun-18-2022