izindaba

I-resin matrix yama-thermoplastic composites ihlanganisa amapulasitiki ajwayelekile nakhethekile obunjiniyela, kanti i-PPS iwuphawu olujwayelekile lwamapulasitiki obunjiniyela akhethekile, aziwa kakhulu ngokuthi “igolide lepulasitiki”. Izinzuzo zokusebenza zifaka phakathi izici ezilandelayo: ukumelana nokushisa okuhle kakhulu, izakhiwo ezinhle zemishini, ukumelana nokugqwala, kanye nokuzisha kuze kufike ezingeni le-UL94 V-0. Ngenxa yokuthi i-PPS inezinzuzo zokusebenza ezingenhla, futhi uma iqhathaniswa nezinye amapulasitiki obunjiniyela be-thermoplastic asebenza kahle kakhulu, inezici zokucutshungulwa okulula kanye nezindleko eziphansi, ngakho-ke isibe yi-resin matrix enhle kakhulu yokukhiqiza izinto ezihlanganisiwe.

Izinto ezihlanganisiwe ze-PPS kanye ne-fiber yengilazi emfushane (SGF) zinezinzuzo zamandla aphezulu, ukumelana nokushisa okuphezulu, ukuvimbela ilangabi, ukucutshungulwa okulula, izindleko eziphansi, njll.
Izinto ezihlanganisiwe ze-PPS ezinde ze-fiber yengilazi (LGF) zinezinzuzo zokuqina okuphezulu, ukugoba okuphansi, ukumelana nokukhathala, ukubukeka okuhle komkhiqizo, njll. Zingasetshenziswa kuma-impeller, ama-casing e-pump, ama-joints, ama-valve, ama-impeller e-chemical pump kanye nama-casing, ama-impeller amanzi okupholisa kanye nama-Shells, izingxenye zemishini yasekhaya, njll.

Ngakho-ke yimiphi umehluko oqondile ezimpahleni ze-short glass fiber (SGF) kanye ne-long glass fiber (LGF) reinforced PPS composites?

Izakhiwo eziphelele ze-PPS/SGF (i-short glass fiber) composites kanye ne-PPS/LGF (long glass fiber) composites ziqhathanisiwe. Isizathu sokuthi inqubo yokufakelwa kwe-melt isetshenziswe ekulungiseleleni i-screw granulation ukuthi ukufakwa kwe-fiber bundle kutholakala ku-impregnation mold, futhi i-fiber ayonakaliswa. Okokugcina, ngokuqhathanisa idatha yezakhiwo zemishini zalezi zinto ezimbili, inganikeza ukwesekwa kobuchwepheshe kubasebenzi besayensi nobuchwepheshe abaseceleni kohlelo lokusebenza lapho bekhetha izinto.

Ukuhlaziywa kwezakhiwo zemishini
Imicu yokuqinisa efakwe ku-resin matrix ingakha uhlaka olusekelayo. Lapho izinto ezihlanganisiwe zingaphansi kwamandla angaphandle, imicu yokuqinisa ingathwala ngempumelelo indima yemithwalo yangaphandle; ngesikhathi esifanayo, ingamunca amandla ngokuqhekeka, ukuguqulwa, njll., futhi ithuthukise izakhiwo zemishini ze-resin.

Lapho okuqukethwe yifayibha yengilazi kukhuphuka, imicu yengilazi eminingi ezintweni ezihlanganisiwe ibhekana namandla angaphandle. Ngesikhathi esifanayo, ngenxa yokwanda kwenani lemicu yengilazi, i-resin matrix phakathi kwemicu yengilazi iba mncane, okuyinto ekhuthaza kakhulu ukwakhiwa kohlaka oluqinisiwe lwefayibha yengilazi; ngakho-ke, ukwanda kokuqukethwe kwefayibha yengilazi kwenza izinto ezihlanganisiwe zikwazi ukudlulisa ukucindezeleka okwengeziwe kusuka ku-resin kuya kufayibha yengilazi ngaphansi komthwalo wangaphandle, okuthuthukisa ngempumelelo izakhiwo zokubopha nokugoba kwezinto ezihlanganisiwe.
Izakhiwo zokubopha kanye nokuguquguquka kwezakhi ze-PPS/LGF ziphakeme kunezakhi ze-PPS/SGF. Uma ingxenye enkulu yefayibha yengilazi ingu-30%, amandla okubopha kwezakhi ze-PPS/SGF kanye ne-PPS/LGF angama-110MPa kanye ne-122MPa, ngokulandelana; Amandla okubopha yi-175MPa kanye ne-208MPa, ngokulandelana; i-flexural elastic moduli ingu-8GPa kanye ne-9GPa, ngokulandelana.
Amandla okuthamba, amandla okugoba kanye ne-flexural elastic modulus yama-composites e-PPS/LGF anyuswe ngo-11.0%, 18.9% kanye no-11.3%, ngokulandelana, uma kuqhathaniswa nama-composites e-PPS/SGF. Izinga lokugcina ubude be-fiber yengilazi ezintweni ezihlanganisiwe ze-PPS/LGF liphakeme. Ngaphansi kokuqukethwe okufanayo kwe-fiber yengilazi, izinto ezihlanganisiwe zinokumelana nomthwalo okuqinile kanye nezakhiwo ezingcono zemishini.