I-ABS
Ukusebenza kwe-ABS
I-ABS yakhiwe ama-monomers amakhemikhali amathathu i-acrylonitrile, i-butadiene ne-styrene. Ngokombono we-morphology, i-ABS iyimpahla engeyona ikristalu, enamandla amakhulu emishini kanye nokusebenza okuhle "okuqinile, okuqinile, kwensimbi" okuphelele. I-amorphous polymer, i-ABS iyipulasitiki yobunjiniyela evamile, ukuhlukahluka kwayo, ukusetshenziswa okubanzi, eyaziwa nangokuthi "ipulasitiki evamile", i-ABS kulula ukumunca umswakama, amandla adonsela phansi athile angu-1.05g/cm3 (isinda kancane kunamanzi), ukushwabana okuphansi. isilinganiso (0.60%), usayizi ozinzile, ukucubungula ukubumba okulula.
Izici ze-ABS zincike kakhulu kwisilinganiso sama-monomers amathathu kanye nesakhiwo samangqamuzana ezigaba ezimbili. Lokhu kuvumela ukuguquguquka okukhulu ekwakhiweni komkhiqizo, futhi ngaleyo ndlela kukhiqiza amakhulukhulu ezinto ezihlukile zekhwalithi ye-ABS emakethe. Lezi zinto ezihlukile zekhwalithi zinikeza izici ezihlukene, ezifana nokumelana nomthelela ophakathi kuya phezulu, ukwehla okuphansi kuya kokuphezulu nezici zokuhlanekezela kwezinga lokushisa eliphezulu. Izinto ze-ABS zinokusebenza okuhle kakhulu, izici zokubukeka, ukukhasa okuphansi, ukuqina okuhle kakhulu kobukhulu namandla omthelela aphezulu.
I-ABS iyinhlaka ekhanyayo ephuzi eyimbudumbudu noma yobuhlalu ecwebezelayo, engenabuthi, ayinambitheki, imunca amanzi aphansi, inezici ezinhle zomzimba nezemishini, ezifana nezakhiwo zikagesi ezinhle kakhulu, ukumelana nokugqokwa, ukuzinza kwe-dimensional, ukumelana namakhemikhali kanye nokucwebezela kwendawo, futhi kulula ukusetshenzwa. kanye nefomu. Ukungalungi ukumelana nesimo sezulu, ukumelana nokushisa kubi, futhi kuyavutha.
Izici zenqubo ye-ABS
I-ABS ine-hygroscopiness ephezulu kanye nokuzwela komswakama. Kumele yomiswe ngokuphelele futhi ishiswe ngaphambili ngaphambi kokwakhiwa nokucutshungulwa (yomiswe ku-80~90C okungenani amahora ama-2), futhi okuqukethwe komswakama kulawulwa ngaphansi kuka-0.03%.
I-viscosity encibilikayo ye-ABS resin ayizweli kangako izinga lokushisa (ihlukile kwamanye ama-amorphous resins). Yize izinga lokushisa lomjovo le-ABS liphakeme kancane kunele-PS, alikwazi ukuba nobubanzi obubanzi bokufudumala njenge-PS. I-viscosity ye-ABS ayikwazi ukuncishiswa ngokushisa okuyimpumputhe. I-liquidity ye-ABS ingathuthukiswa ngokukhuphula ijubane lesikulufu noma ingcindezi yomjovo. Ukushisa okujwayelekile kokucubungula ku-190-235 ℃ kufanelekile.
I-viscosity encibilikayo ye-ABS iphakathi, iphakeme kunaleyo ye-PS, HIPS ne-AS, futhi ingcindezi yomjovo ephezulu (ibha engu-500-1000) iyadingeka.
Impahla ye-ABS enesivinini sokujova esimaphakathi nesiphezulu inomphumela ongcono. (ngaphandle uma ukubunjwa kuyinkimbinkimbi futhi izingxenye ezincane zodonga zidinga izinga lomjovo eliphezulu), umkhiqizo kulula ukukhiqiza imigqa yegesi emlonyeni.
Izinga lokushisa lokubumba i-ABS liphezulu, izinga lokushisa layo lesikhunta ngokuvamile lilungiswa ku-25-70 ℃. Lapho ukhiqiza imikhiqizo emikhulu, izinga lokushisa lesikhunta esingaguquki (isikhunta sangaphambili) ngokuvamile liphakeme kancane kunesikhunta esinyakazayo (isikhunta sangemuva) esifanelekile esingaba ngu-5 ℃. (Izinga lokushisa lesikhunta lizothinta ukuphela kwezingxenye zepulasitiki, izinga lokushisa eliphansi lizoholela ekuqedeni okuphansi)
I-ABS akufanele ihlale emgqonyeni wokushisa okuphezulu isikhathi eside (ngaphansi kwemizuzu engama-30), ngaphandle kwalokho kulula ukubola nokuphuzi.
Ibanga lohlelo lokusebenza olujwayelekile
Ezezimoto (amaphaneli amathuluzi, izicabha zokucathula amathuluzi, amakhava amasondo, amabhokisi abonisa ukukhanya, njll.), iziqandisi, amathuluzi anamandla aphezulu (izomisa izinwele, izixube, amaprosesa okudla, okokugunda utshani, njll.), amakesi ocingo, amakhibhodi omshini wokubhala, izimoto zokungcebeleka ezifana njengezinqola zegalofu kanye nezileji zejethi nokunye.
PMMA
Ukusebenza kwe-PMMA
I-PMMA i-amorphous polymer, eyaziwa ngokuthi i-plexiglass. Ukukhanya okuhle kakhulu, ukumelana nokushisa okuhle (izinga lokushisa elishisayo le-98 ℃), elinezici ezinhle zokumelana nomthelela, imikhiqizo yayo yamandla aphakathi nendawo, ubulukhuni obuphansi bendawo, kulula ukuklwejwa izinto eziqinile nokushiya iminonjana, uma kuqhathaniswa ne-PS, akulula crack, amandla adonsela phansi athile angu-1.18g/cm3. I-PMMA inezinto ezinhle kakhulu zokubona kanye nokumelana nesimo sezulu. Ukungena kokukhanya okumhlophe kuphezulu njengo-92%. Imikhiqizo ye-PMMA ine-birefringence ephansi kakhulu, elungele ukukhiqizwa kwamadiski evidiyo. I-PMMA inezici zokukhuphuka kwezinga lokushisa kwegumbi. Ngokukhula komthwalo nesikhathi, ukuqhekeka kwengcindezi kungabangelwa.
Izici zenqubo ye-ABS
Izidingo zokucubungula i-PMMA ziqinile kakhulu, izwela kakhulu emanzini nasezingeni lokushisa, ngaphambi kokucutshungulwa ukuze yome ngokuphelele (izimo ezinconyiwe zokomisa ezingama-90 ℃, amahora ama-2 kuye kwangama-4), i-viscosity yokuncibilika kwayo inkulu, idinga ukwakhiwa phezulu (225). -245 ℃) kanye nengcindezi, izinga lokushisa lokufa ngo-65-80 ℃ lingcono. I-PMMA ayizinzile kakhulu, futhi ukuwohloka kungabangelwa izinga lokushisa eliphezulu noma ukuhlala isikhathi eside ekushiseni okuphezulu. Isivinini sesikulufu akufanele sibe sikhulu kakhulu (60% noma ngaphezulu), izingxenye eziwugqinsi ze-PMMA zibonakala kalula "i-cavity", zidinga ukuthatha isango elikhulu, "izinga lokushisa eliphansi lempahla, izinga lokushisa eliphakeme lokufa, isivinini esisheshayo" indlela yokujova ukuze icutshungulwe.
Ibanga lohlelo lokusebenza olujwayelekile
Imboni yezimoto (imishini yezibani zesignali, iphaneli yensimbi nokunye), imboni yezemithi (isitsha sokugcina igazi nokunye), ukusetshenziswa kwezimboni (i-video disc, isihlakala esikhanyayo), izimpahla zabathengi (izinkomishi zeziphuzo, izinto zokubhala nokunye).
Isikhathi sokuthumela: 23-11-22