I-BMC isifinyezo segama elithiInhlanganisela Yokubumba OkukhuluNgesiNgisi, igama lesiShayina yi-Bulk Molding Compound (ebizwa nangokuthi: i-polyester engagcwalisiwe ingilazi ye-fiber eqiniswe i-Bulk Molding Compound) yi-resin ewuketshezi, i-agent encishisiwe ephansi, i-agent exhumanisayo, i-initiator, i-filler, ama-flakes e-fiber engilazi afushane kanye nezinye izingxenye zengxube ebonakalayo yenkimbinkimbi, ezimweni zokushisa nengcindezi, ukuhlangana kwe-polyester engagcwalisiwe ne-styrene, kwenzeka ukusabela kwe-polymerization. Ngaphansi kokushisa nengcindezi, i-polyester engagcwalisiwe ne-styrene kuxhumene futhi kuphulukiswe nge-polymerization reaction. Izakhiwo zayo ezinhle kakhulu zemishini kanye nezakhiwo zikagesi ezinhle kakhulu, kanye nokumelana nokushisa kanye nezakhiwo ezinhle zokucubungula kusetshenziswa kabanzi ezintweni zikagesi, izinsimbi, ukukhiqizwa kwezimoto, izindiza, ezokuthutha, izimboni zokwakha.
Uhlelo lokwakha
1. I-resin ye-polyester engagcwalisiwe: ene-resin ekhethekile ye-smc/bmc, ikakhulukazi i-m-phenyl up, ukumelana nokushayisana, ukumelana nokugqwala, ukumelana ne-arc, efanelekile ekukhiqizweni kwemikhiqizo ye-block noma ye-anisotropic
2. I-ejenti yokuxhumanisa; nge-styrene ye-monomer, inani elifinyelela ku-30% ~ 40%, kuye ngokuqukethwe kwezibopho eziphindwe kabili ku-polyester engagcwalisiwe kanye nengxenye yezibopho eziphindwe kabili ze-trans kanye nezibopho eziphindwe kabili ze-cis, ingxenye ephezulu yama-monomer axhumanisayo, angathola ukuphulukiswa okuphelele.
3. I-initiator ene-ejenti yokwelapha yokushisa okuphezulu, i-tert-butyl peroxybenzoate (TBBB) ingeye-ejenti yokwelapha yokushisa okuphezulu evame ukusetshenziswa, izinga lokushisa lokubola koketshezi elingu-104 degrees lokushisa lokubumba elingu-135 kuya ku-160 degrees.
4. I-ejenti yokuncipha okuphansi evame ukusetshenziswa ama-resin e-thermoplastic, ukusetshenziswa kokukhulisa ukushisa ukuze kulungiswe ukufinyela kokubumba. Ngokuvamile, izinga lokuncipha kwemikhiqizo kufanele lilawulwe ku-0.1 ~ 0.3%, ngakho-ke umthamo kufanele ulawulwe ngokuqinile.
5. Izinto zokuqinisa: ngokuvamile kusetshenziswa ukuhlanganisa okucutshungulwa ngemicu emifushane engu-6 ~ 12mm ubude 6 okubamba umlilo kusetshenziswa i-Al2O3.3H2O, okunezela inani elincane lokubamba umlilo okusha okuqukethe i-phosphorus, i-alumina enamanzi nayo idlala indima yokugcwalisa 7. Ama-filler anganciphisa izindleko zokuthuthukisa izakhiwo zikagesi kanye nokubambezeleka komlilo. I-Calcium carbonate iyi-filler esetshenziswa isikhathi eside kakhulu enomsebenzi omuhle jikelele, ngokuvamile ngesimo se-micropowder encane ngemva kokwelashwa kokuhlanganisa bese ingezwa.
Inqubo ye-BMC
1. Naka ukulandelana kokufaka izinto. Uma kuxutshwe emshinini wokuxova wohlobo lwe-z, umshini wokuxova unedivayisi yokushisa, kungakhathaliseki ukuthi ukuxuba kuyafana kungabonakala kunamathisela umbala noma umbala wekhabhoni ofanele ngokulinganayo, cishe imizuzu eyi-15 ~ 18
2. I-fiber yengilazi emfushane yokuhlanganisa okokugcina, kusenesikhathi ukuhlanganisa inani elikhulu lemicu ephukile, ethinta amandla e-fiber
3. Izinto ze-BMC kumele zigcinwe ezingeni lokushisa eliphansi, ngokuvamile kuma-degree Celsius ayi-10, izinga lokushisa liphezulu, i-resin engagcwele kulula ukuyihlanganisa nokuyilungisa, bese kucubungula ubunzima bokubumba.
4. Izinga lokushisa lokubumba: ama-degrees angu-140 noma ngaphezulu, izinga lokushisa lokubumba eliphezulu neliphansi lingama-degrees angu-5 ~ 10, ingcindezi yokubumba ingama-7mpa noma ngaphezulu, isikhathi sokubamba singama-40 ~ 80s/mm
Ukuxilongwa kwezimboni
1. Ukuqhekeka komkhiqizo: inkinga yokuqhekeka komkhiqizo ivamile, ikakhulukazi ezimweni zokushisa eziphansi zasebusika. Lokhu okubizwa ngokuthi ukuqhekeka kubhekisela emikhiqizweni ngokucindezeleka kwangaphakathi, umthelela wangaphandle noma izimo zemvelo kanye neminye imiphumela ebusweni noma emifantwini yangaphakathi.
2. Isixazululo; ikakhulukazi kusukela ezintweni zokusetshenziswa, isilinganiso kanye nenqubo yokuxazulula.
2.1 Ukukhethwa nokucutshungulwa kwezinto zokusetshenziswa
1) I-Resin iyi-matrix ye-bmc, i-resin ye-polyester engagcwali, i-ester ye-vinyl,i-resin ye-phenolic, i-melamine, njll. I-Resin iwumkhiqizo ophilisayo, onamandla ayisisekelo. Ngakho-ke, ukusetshenziswa kwe-smc/bmc ekhethekile ye-resin, kuyi-resin yohlobo lwe-m-phenylene, i-m-phenylene resin kune-o-phenylene enobuthi obuphezulu, ngakho-ke ngaphezu kwe-resin ngokwayo, ukuncipha kuncane, kungamukela ama-monomers amaningi axhumanisayo, ukuze ubuningi bobuningi bukhuphuke, izinga lokuncipha linciphe.
(2) engeza i-composite shrinkage agent ephansi; i-polyester resin engagcwalisiwe inciphisa izinga lokuncishiswa elifika ku-5 ~ 8%, engeza ukuncishiswa okuhlukahlukene kokugcwalisa kusengaphezu kuka-3%, imikhiqizo ngokuvamile inciphisa izinga lokuncishiswa elingaphezu kuka-0.4% ukuze iqhekeke, ngakho-ke engeza ama-thermoplastic resin, ukusetshenziswa kwama-thermoplastic resin ukuqeda ukwanda kokushisa kokuncishiswa kokwelapha kwezingxenye. I-pmma, i-ps add kanye ne-monomer styrene ukuxuba nokuhlakazeka kwe-styrene kungcono, ukungezwa kwe-pmma Ukuqeda kungcono. Ukuncishiswa komkhiqizo kungalawulwa ku-0.1 ~ 0.3%.
(3) isigcwalisi, isivimbeli somlilo, i-fiber yengilazi; ubude be-fiber yengilazi – ngokuvamile 6 ~ 12mm, ngezinye izikhathi ukuze kuhlangatshezwane nezakhiwo eziphezulu zemishini zibe ngu-25mm; ukuze kuhlangatshezwane nezidingo zokugeleza kokubumba, kube ngu-3mm. Okuqukethwe kwe-fiber yengilazi kuvame ukuba ngu-15% ~ 20%; emikhiqizweni esebenza kahle, kube ngu-25%. Okuqukethwe kwe-fiber yengilazi ye-BMC kuphansi kune-SMC, ungangeza isigcwalisi esengeziwe, ngakho-ke izindleko ziphansi ukuze kwenziwe isigcwalisi se-inorganic. Kuphansi ukuze kwenziwe isigcwalisi se-inorganic, isivimbeli somlilo, i-fiber yengilazi kanye ne-resin kunenhlanganisela yamakhemikhali phakathi kokusetshenziswa okujwayelekile kwe-agent yokuhlanganisa i-silane ngaphambi kokuxuba, evame ukusetshenziswa i-KH-560, umphumela we-KH-570 muhle ukujoyina izinto eziqinile, izinto ezi-micronized, njenge-calcium carbonate esindayo enebanga le-micronized, usayizi wezinhlayiya 1 ~ 10um (okulingana ne-mesh engu-1250)
2.2 Izidingo zokulinganisa i-BMC I-resin yesisekelo se-Bmc, inani alikwazi ukuba ngaphansi kuka-20%, inani layo lokuqala elihlobene nenani le-ejenti yokuxhumanisa ngokuyisisekelo akudingeki ukuthi lingeze inani le-ejenti yokuxhumanisa okuqukethwe kwe-resin elibalwe ku-35%, ngaphezu kwenani le-ejenti yokuncipha ephansi ukujoyina kuncike enanini le-resin. Ukusetshenziswa kwe-ejenti yokwelapha eshisa kakhulu i-TBPB, i-filler kanye ne-flame retardant (i-aluminium hydroxide) ukujoyina inani eliphelele elingaba ngu-50% kufanelekile, kuphindwe kabili kune-resin, amandla esakhiwo amaningi kakhulu ukujoyina awonakele, kulula ukuwaqhekeza!
2.3 Izimo zenqubo yokukhiqiza
(1) ukuxuba, okokuqala, lapho kuhlanganiswa izinto ezizoxutshwa ngokulinganayo, impuphu kuqala yengeza amandla adonsela phansi amancane athile, bese ingeza amandla adonsela phansi amakhulu athile, uketshezi luxutshwa kuqala bese lufakwa, isiqalo singesokugcina esizongezwa, i-thickener kufanele ifakwe ngaphambi kokuxubha i-resin paste ne-polystyrene. I-fiber yengilazi ifakwa ngamaqoqo
(2) izimo zenqubo yokubumba: amapharamitha enqubo yokubumba athinta ngqo umkhiqizo ukuthi muhle noma mubi. Ngokuvamile ngokwanda kwengcindezi yokubumba, ukuncipha kwehla. Izinga lokushisa lokubumba liphezulu kakhulu lizokwakha umugqa wokuhlangana kobuso, izinto azifani, ukucindezeleka kwangaphakathi kuhlukile, kulula ukuqhekeka. Ukubamba ingcindezi isikhathi eside kuzosiza ekuvimbeleni ukuqhekeka kwezingxenye.
(3) uhlelo lokushisa ngaphambi kokushisa: izingxenye ezisezingeni lokushisa eliphansi kulula ukuziqhekeza. Ngakho-ke, izinto kufanele zishiswe kusengaphambili
Isikhathi sokuthunyelwe: Juni-10-2025
