1. Indima yezinto zokugcwalisa
Engeza izihlungi ezifana ne-calcium carbonate, ubumba, i-aluminium hydroxide, ama-flakes engilazi, ama-microbeads engilazi, kanye ne-lithopone kunhlaka ye-polyester futhi ukuhlakaze ukuze udale ingxube ye-resin.Umsebenzi wayo umi kanje:
(1) Yehlisa izindleko zezinto ze-FRP (njenge-calcium carbonate nobumba);
(2) Yehlisa izinga lokushwabana lokuphulukisa ukuze kuvinjwe imifantu nokuwohloka okubangelwa ukuncipha (okufana ne-calcium carbonate, i-quartz powder, i-glass microspheres, njll.);
(3) Thuthukisa i-resin viscosity ngesikhathi sokubumba futhi uvimbele ukuconsa kwe-resin.Kodwa-ke, kufanele kuqashelwe ukuthi ukwanda ngokweqile kwe-viscosity ngezinye izikhathi kungaba yingozi;
(4) Ukungabi sobala kwemikhiqizo eyenziwe (njenge-calcium carbonate nobumba);
(5) Ukwenziwa mhlophe kwemikhiqizo eyenziwe (njenge-barium sulfate ne-lithopone);
(6) Thuthukisa ukumelana nokugqwala kwemikhiqizo eyenziwe (i-mica, amashidi engilazi, njll.);
(7) Thuthukisa ukumelana nelangabi kwemikhiqizo eyakhiwe (i-aluminium hydroxide, i-antimony trioxide, ipharafini ene-chlorinated);
(8) Thuthukisa ubulukhuni nokuqina kwemikhiqizo eyenziwe (njenge-calcium carbonate, i-glass microspheres, njll.);
(9) Thuthukisa amandla emikhiqizo eyenziwe (impushana yengilazi, imicu ye-potassium titanate, njll.);
(10) Thuthukisa izinto ezingasindi kanye nezifakwayo zemikhiqizo ebunjiwe (ama-microsphere ahlukahlukene);
(11) Nikeza noma wandise i-thixotropy yezingxube ze-resin (njenge-ultrafine anhydrous silica, i-glass powder, njll.).
Kungabonakala ukuthi inhloso yokwengeza ama-fillers kuma-resin ahlukahlukene, ngakho-ke kubalulekile ukukhetha ama-fillers afanelekile ngokuvumelana nezinhloso ezahlukene ukuze usebenzise ngokugcwele indima yokugcwalisa.
2. Izinyathelo zokuqapha ekukhetheni nasekusetshenzisweni kokugcwalisa
Kunezinhlobo ezahlukene zokugcwalisa.Ngakho-ke, kubalulekile ukukhetha uhlobo olufanele lokugcwalisa kanye nebanga ngenjongo yokusetshenziswa, okuhamba ngaphandle kokusho.Izinyathelo zokuqapha ezijwayelekile lapho ukhetha ama-fillers akukona nje ukukhetha izinhlobonhlobo ngezindleko ezinqunywe kusengaphambili nokusebenza, kodwa futhi nokunaka amaphuzu alandelayo:
(1) Inani le-resin elimuncwa kufanele libe elilinganiselwe.Inani le-resin elimunnyiwe linomthelela omkhulu ku-viscosity yezingxube ze-resin.
(2) I-viscosity yengxube ye-resin kufanele ifanele umsebenzi wokubumba.Ukulungiswa okuningana ku-viscosity yezingxube ze-resin kungenziwa ngokuhlanjululwa nge-styrene, kodwa ukwengeza izigcwalisi eziningi kakhulu nokuhlanjululwa nge-styrene kuzoholela ekwehleni kokusebenza kwe-FRP.I-viscosity yezingxube ze-resin ngezinye izikhathi ithinteka kakhulu inani lokuxuba, izimo zokuxuba, noma ukungezwa kwezilungisi ze-filler surface.
(3) Izici zokuphulukisa zengxube ye-resin kufanele zifanele izimo zokubumba.Izici zokuphulukisa zezingxube ze-resin ngezinye izikhathi zithonywa isigcwalisi ngokwaso noma umswakama okhangisiwe noma oxubile nezinto zangaphandle kusigcwalisi.
(4) Ingxube ye-resin kufanele ihlale izinzile isikhathi esithile.Ngokwenzeka kokuxazulula kanye nokuhlukaniswa kwama-fillers ngenxa yokuma, ngezinye izikhathi kungase kuvinjwe ngokunikeza i-resin nge-thixotropy.Kwesinye isikhathi, indlela yokugwema ukunyakaziswa kwemishini okumile nokuqhubekayo isetshenziselwa futhi ukuvimbela ukuxazululwa kwama-fillers, kepha kulokhu, kuyadingeka ukucabangela ukuvimbela ukuxazululwa nokuqoqwa kwama-filler epayipini elisuka esitsheni esiqukethe i-mixer kuya ekwakheni. indawo.Uma ama-microbead filler athile ethambekele ekuhlukaniseni phezulu, kuyadingeka ukuphinda uqinisekise ibanga.
(5) Ukungena kwengxube ye-resin kufanele kulungele izinga lobuchwepheshe lomsebenzisi.Ukwengezwa kwama-filler ngokuvamile kunciphisa ukucaca kwengxube ye-resin futhi kunciphisa ukudumba kwe-resin ngesikhathi sokubekwa.Ngakho-ke, ukukhulelwa, ukusebenza kokukhipha amagwebu, nokwahlulela ngesikhathi sokubunjwa sekunzima.Lezi zici kufanele zicatshangelwe ukuze kunqunywe isilinganiso sengxube ye-resin.
(6) Kufanele kuqashelwe amandla adonsela phansi athile engxube ye-resin.Lapho kusetshenziswa okokugcwalisa njengezinto ezikhulayo zokunciphisa izindleko zezinto ezibonakalayo, amandla adonsela phansi engxube ye-resin ayakhuphuka uma kuqhathaniswa nenhlaka, kwesinye isikhathi angafinyeleli inani elilindelekile lokunciphisa izindleko zezinto ezibonakalayo.
(7) Umthelela wokuguqulwa kwendawo yezigcwalisi kufanele uhlolwe.Izilungisi ze-filler surface ziyasebenza ekwehliseni i-viscosity yezingxube ze-resin, futhi izilungisi ezihlukile kwesinye isikhathi zingathuthukisa amandla emishini ngaphezu kokumelana namanzi, ukumelana nesimo sezulu, nokumelana namakhemikhali.Kukhona futhi izinhlobo zokugcwalisa eziye zaphathwa ngaphezulu, futhi ezinye zisebenzisa lokho okubizwa ngokuthi "indlela yokuxuba yonke" ukuze kulungiswe indawo yokugcwalisa.Okusho ukuthi, lapho kuhlanganiswa izingxube ze-resin, izigcwalisi nezilungisi zengezwa ndawonye ku-resin, ngezinye izikhathi umphumela muhle kakhulu.
(8) Ukukhipha amagwebu engxubeni ye-resin kufanele kwenziwe kahle.Izigcwalisi zivame ukusetshenziswa ngendlela yama-micro powders nezinhlayiya, ezinendawo enkulu kakhulu ethize.Ngesikhathi esifanayo, kunezingxenye eziningi lapho ama-micro powders nezinhlayiya zihlangana ndawonye.Ukuze uhlakaze lezi zigcwalisi ku-resin, inhlaka idinga ukunyakaziswa okukhulu, futhi umoya udonselwa enhlanganisweni.Ngaphezu kwalokho, umoya uphinde udonswe kumthamo omkhulu wama-fillers.Ngenxa yalokho, inani lomoya elingenakucatshangwa laxutshwa kungxube ye-resin elungiselelwe, futhi kulesi simo, i-FRP etholwe ngokuyihlinzeka ngokubunjwa ijwayele ukukhiqiza amabhamuza nama-voids, ngezinye izikhathi yehluleka ukufeza ukusebenza okulindelekile.Uma kungenakwenzeka ukukhipha amagwebu ngokugcwele ngokuma unganyakazi ngemva kokuxuba, ukuhlungwa kwesikhwama sikasilika noma ukunciphisa ukucindezela kungasetshenziswa ukususa amabhamuza.
Ngaphezu kwamaphuzu angenhla, izinyathelo zokuvimbela uthuli kufanele futhi zithathwe endaweni yokusebenza lapho usebenzisa ama-fillers.Izinto ezifana ne-ultrafine particulate silica eyakhiwe nge-silica yamahhala, i-alumina, umhlaba we-diatomaceous, amatshe aqandisiwe, njll. ahlukaniswa njengothuli Lwekilasi I, kuyilapho i-calcium carbonate, impushana yengilazi, ama-flakes engilazi, i-mica, njll. ihlukaniswa njengothuli Lwesigaba II.Kukhona nemithethonqubo mayelana nokuhlushwa okulawulwayo kwama-micro powders ahlukahlukene emkhathini wemvelo.Imishini yokukhipha umoya wendawo kufanele ifakwe futhi okokuvikela abasebenzi kufanele kusetshenziswe ngokuqinile lapho kusingathwa lawo mafayili ayimpushana.
Isikhathi sokuthumela: Feb-18-2024
