Ngenxa yepulasitiki ye-elekthronikhi, izingxenye zezimoto, nezingxenye zezimoto, izidingo eziphakeme zibekwe ekusebenzeni kwenayiloni kanye nokumelana nokushisa okuphezulu.Lokhu kwavula isethulo socwaningo nokuthuthukiswa kanye nokusetshenziswa kwenayiloni enezinga lokushisa eliphezulu.
Ifayibha yengilazi egeleza kakhulu eqiniswe emazingeni okushisa aphezulu enayiloni i-PPA ingenye yezinhlobo ezintsha ezidonse ukunaka okukhulu, futhi ingenye yezinto ezintsha ezikhula ngokushesha nezingabizi kakhulu.I-fibre yengilazi eqiniswe ekushiseni okuphezulu kwento eyinhlanganisela enayiloni esekelwe kumazinga okushisa aphezulu enayiloni i-PPA kulula ukwenza ukunemba okuphezulu, ukumelana nokushisa okuphezulu kanye nemikhiqizo yamandla aphezulu.Ikakhulukazi emikhiqizweni ye-peripheral yenjini yezimoto, edinga ukubhekana nezidingo zokuguga eziqinile, inayiloni enezinga eliphezulu lokushisa kancane kancane isibe yisinqumo esingcono kakhulu sezinto ezisetshenziswayo zenjini yezimoto.Yinieyingqayizivelemayelana nezinga lokushisa eliphezulu inayiloni?
1, Amandla amahle kakhulu wemishini
Uma kuqhathaniswa nenayiloni ye-aliphatic yendabuko (PA6/PA66), inayiloni yokushisa ephezulu inezinzuzo ezisobala, ezibonakala ngokuyinhloko ezintweni eziyisisekelo zomshini womkhiqizo kanye nokumelana nokushisa kwawo.Uma kuqhathaniswa namandla ayisisekelo emishini, inayiloni yokushisa ephezulu inomucu wengilazi ofanayo endaweni.Iphakeme ngo-20% kunenayiloni ye-aliphatic yendabuko, enganikeza izixazululo ezingasindi kakhulu ezimotweni.
I-automotive thermostatic housing eyenziwe enayiloni lokushisa eliphezulu.
2, Ukusebenza kokuguga kokushisa okuphezulu kakhulu
Ngaphansi kwesisekelo sokushisa kwe-thermal deformation engu-1.82MPa, inayiloni yokushisa ephezulu engu-30% ye-glass fiber eqinisiwe ingafinyelela ku-280 °C, kuyilapho i-aliphatic PA66 30% GF yendabuko icishe ibe ngu-255 °C.Uma izidingo zomkhiqizo zikhuphuka zifike ku-200 °C, kuba nzima ngamanayiloni e-aliphatic endabuko ukuhlangabezana nezidingo zomkhiqizo, ikakhulukazi imikhiqizo ye-peripheral yenjini ibilokhu ikwizinga lokushisa eliphezulu kanye nezinga lokushisa eliphezulu isikhathi eside.Endaweni emanzi, futhi kufanele imelane nokugqwala kwamafutha ayimishini.
3, Ukuzinza okuhle kakhulu kwe-dimensional
Izinga lokumunca amanzi linayiloni aliphatic liphezulu uma kuqhathaniswa, futhi izinga lokumunca amanzi agcwele lingafinyelela ku-5%, okuholela ekuzinzeni okuphansi kakhulu komkhiqizo, okungafaneleki kakhulu kweminye imikhiqizo enembayo ephezulu.Ingxenye yamaqembu e-amide enayiloni yokushisa okuphezulu iyancishiswa, izinga lokumunca amanzi liphinde libe uhhafu walelo lenayiloni ye-aliphatic evamile, futhi ukuzinza kwe-dimensional kungcono.
4, Ukumelana kwamakhemikhali okuhle kakhulu
Njengoba imikhiqizo yangaphandle yezinjini zezimoto ivamise ukuthintana nama-ejenti amakhemikhali, izidingo eziphakeme zibekwa ekumelaneni kwamakhemikhali ezinto zokwakha, ikakhulukazi ukugqwala kukaphethiloli, isiqandisi namanye amakhemikhali kunomphumela ogqwalile obonakalayo ku-aliphatic polyamide, kuyilapho izinga lokushisa eliphakeme Ikhemikhali ekhethekile. Ukwakheka kwenayiloni kwenza lokhu kushiyeka, ngakho ukubonakala kwenayiloni enezinga eliphezulu lokushisa kuye kwakhuphula indawo yokusebenzisa injini ezingeni elisha.
Izembozo zekhanda le-cylinder zezimoto ezenziwe inayiloni yokushisa okuphezulu.
Izicelo zemboni yezimoto
Njengoba i-PPA inganikeza izinga lokushisa lokuhlanekezela ukushisa elingaphezu kuka-270°C, iyipulasitiki yobunjiniyela efanelekile yezingxenye ezikwazi ukumelana nokushisa embonini yezimoto, yemishini, nekagesi/ezikagesi.Ngesikhathi esifanayo, i-PPA nayo ilungele izingxenye okufanele zigcine ubuqotho besakhiwo emazingeni okushisa aphezulu esikhashana.
Ihood yezimoto eyenziwe inayiloni yokushisa okuphezulu
Ngaso leso sikhathi, ukufakwa kwepulasitiki kwezingxenye zensimbi njengezinhlelo zikaphethiloli, amasistimu wokukhipha umoya, nezinhlelo zokupholisa eduze kwenjini kuthathelwe indawo ama-thermosetting resins ukuze zigaywe kabusha, futhi izidingo zezinto zokwakha ziqine kakhulu.Ukumelana nokushisa, ukuqina, nokumelana namakhemikhali kwamapulasitiki obunjiniyela benjongo evamile edlule akusakwazi ukuhlangabezana nezidingo.
Ngaphezu kwalokho, uchungechunge lwenayiloni lokushisa eliphezulu lugcina izinzuzo ezaziwa kakhulu zamapulasitiki, okungukuthi ukucutshungulwa kalula, ukusika, ukuklama kalula kwezingxenye eziyinkimbinkimbi ezihlanganisiwe ezisebenzayo, nokunciphisa isisindo nomsindo kanye nokumelana nokugqwala.
Njengoba inayiloni yokushisa ephezulu ingamelana namandla aphezulu, izinga lokushisa eliphezulu nezinye izindawo ezinokhahlo, ifaneleka kakhulu ku-eizindawo zenjini (njengamakhava enjini, amaswishi nezixhumi) kanye nezinhlelo zokudlulisela (ezifana namakheji anamakheji), amasistimu omoya (njengesistimu yokulawula umoya we-exhaust air) kanye nemishini yokudonsa umoya.
Noma kunjalo, izici ezinhle kakhulu zenayiloni yokushisa okuphezulu zingaletha izinzuzo eziningi kubasebenzisi, futhi lapho uguqulela kusuka ku-PA6, PA66 noma PET/PBT materials kuya ku-PPA, asikho isidingo sokushintsha isikhunta, njll., ngakho-ke ilungele izinhlelo zokusebenza ezihlukahlukene. edinga ukumelana nokushisa okuphezulu.Kunamathemba abanzi.
Isikhathi sokuthumela: 18-08-22