ʻO BMC kahi pōkole oPahu Hoʻoheheʻe Nuima ka ʻōlelo Pelekania, ʻo ka inoa Kina ʻo Bulk Molding Compound (i kapa ʻia hoʻi: unsaturated polyester glass fiber reinforced Bulk Molding Compound) e ka wai resin, haʻahaʻa shrinkage agent, crosslinking agent, initiator, filler, short-cut glass fiber flakes a me nā mea ʻē aʻe o ka hui kino o ka paʻakikī, i ke ʻano o ka mahana a me ke kaomi, ka crosslinking o unsaturated polyesterization a me styrene reaction. Ma lalo o ka mahana a me ke kaomi, ua hoʻopili ʻia ka polyester unsaturated a me ka styrene a hoʻōla ʻia e ka hopena polymerization. ʻO kāna mau waiwai mechanical maikaʻi loa a me nā waiwai uila maikaʻi loa, a me ka wela wela a me nā waiwai hana maikaʻi e hoʻohana nui ʻia i nā mea uila, nā mea kani, ka hana kaʻa, ka mokulele, ka halihali, nā ʻoihana kūkulu.
Pūnaehana hana
1. Unsaturated polyester resin: me ka smc / bmc resin kūikawā, ka nui o ka m-phenyl up, ke kū'ē i ka hopena, ke kū'ēʻana i ka'ōpala, ke kū'ē arc, kūpono no ka hanaʻana i nā mea'āpana a iʻole nā mea anisotropic.
2. Mea hoʻopili crosslinking; me ka monomer styrene, ka nui o ka up30% ~ 40%, e pili ana i ka maʻiʻo o nā paʻa pālua i ka polyester unsaturated a me ka hapa o nā paʻa pālua trans a me nā paʻa ʻelua cis, kiʻekiʻe o nā monomers crosslinking, hiki ke loaʻa i ka ho'ōla piha loa.
3. ʻO ka mea hoʻomaka me ka lāʻau lapaʻau wela kiʻekiʻe, tert-butyl peroxybenzoate (TBPB) ʻo ia ka mea hoʻohana maʻamau kiʻekiʻe wela ho'ōla lāʻau, wai decomposition wela o 104 degere molding wela o 135 a 160 degere.
4. Hoʻohana maʻamau ka mea hoʻohaʻahaʻa haʻahaʻa i nā resins thermoplastic, ka hoʻohana ʻana i ka hoʻonui ʻana i ka wela e hoʻopau i ka ʻoki ʻana. ʻO ka maʻamau, pono e hoʻomalu ʻia ka shrinkage rate o nā huahana ma 0.1 ~ 0.3%, no laila e hoʻomalu pono ʻia ka dosage.
5. Mea hoʻoikaika: hoʻohana maʻamau ka hoʻopili ʻana i hoʻopaʻa ʻia 6 ~ 12mm lōʻihi pōkole 6 flame retardant me ka hoʻohana ʻana i ka Al2O3.3H2O-based, hoʻohui i kahi liʻiliʻi o ka phosphorus-containing flame retardant, hydrated alumina pū kekahi i ke kuleana o ka filler 7. Hiki i nā mea hoʻopihapiha ke hoʻemi i ke kumukūʻai o ka hoʻomaikaʻi ʻana i nā waiwai uila a me ke ahi retardancy. ʻO ka calcium carbonate ka mea hoʻopihapiha lōʻihi loa me ka hana holoʻokoʻa maikaʻi, ma ke ʻano he ʻano maikaʻi, micropowder ma hope o ka hoʻopili ʻana a hoʻohui ʻia.
Kaʻina BMC
1. E hoʻolohe i ke kaʻina o ka hoʻohui ʻana i nā mea. Hoʻohui ʻia i ka mīkini kneading z-type, he mea hoʻomehana ka mīkini kneading, inā ʻaʻole like ka hui ʻana e hiki ke ʻike ʻia i ka paʻi kala a i ʻole ke kala kalapona i kūpono, ma kahi o 15 ~ 18 mau minuke.
2. pōkole-ʻoki aniani pulupulu e hui i ka hope, mua e hui i ka nui o ka nahaha ana, e pili ana i ka ikaika o ka.
3. Pono e mālama ʻia nā mea BMC ma kahi haʻahaʻa haʻahaʻa, maʻamau ma 10 degere Celsius, kiʻekiʻe ka mahana, maʻalahi ka resin unsaturated i ka hoʻopili ʻana a me ka ho'ōla ʻana, a laila hoʻoponopono i nā pilikia paʻakikī.
4. Molding wela: 140 degere a pēlā, ka luna a me ka lalo o ka wela wela 5 ~ 10 degere, hoʻoheheʻe kaomi 7mpa a pēlā, paʻa manawa 40 ~ 80s / mm
ʻIke ʻenehana
1. ʻO ka māhā ʻana o ka huahana: ʻoi aku ka maʻamau o ka pilikia ma ka hoʻoilo. ʻO ka mea i kapa ʻia ʻo cracking e pili ana i nā huahana e ke koʻikoʻi o loko, ka hopena o waho a i ʻole nā kūlana kaiapuni a me nā hopena ʻē aʻe ma ka ʻili a i ʻole nā māwae i loko.
2. Hoʻonā; mai nā mea maka, ka like a me ke kaʻina hana e hoʻoponopono ai.
2.1 Ke koho a me ka hana ʻana i nā mea maka
1) ʻO Resin ka matrix o bmc, unsaturated polyester resin, vinyl ester,phenolic resin, melamine, etc. ʻO Resin ka ho'ōla huahana, me ka ikaika kumu. No laila, ʻo ka hoʻohana ʻana i ka resin kūikawā smc / bmc, he resin m-phenylene type, resin m-phenylene ma mua o ke ʻano o-phenylene o ka viscosity kiʻekiʻe, no laila, ma ka hoʻohui ʻana i ka resin ponoʻī liʻiliʻi, hiki ke ʻae i nā monomers crosslinking hou aʻe, no laila e hoʻonui ʻia ka nui o ka density, hoʻemi ka shrinkage rate.
(2) hoʻohui i ka mea hoʻohui haʻahaʻa haʻahaʻa; unsaturated polyester resin curing contraction rate a hiki i 5 ~ 8%, e hoʻohui i nā ʻano like ʻole o ka hoʻopiha piha ʻana i ʻoi aku ma mua o 3%, ʻoi aku ka nui o nā huahana i ʻoi aku ma mua o 0.4% e haki, no laila e hoʻohui i nā resins thermoplastic, ka hoʻohana ʻana i nā resins thermoplastic e hoʻopau i ka hoʻonui wela o ka hoʻōla ʻana o nā ʻāpana. pmma, ps hoʻohui a me ka monomer styrene hui ʻana a me ka hoʻoheheʻe ʻana o ka maikaʻi, ka hoʻohui ʻana o ka pmma ʻOi aku ka maikaʻi. Hiki ke hoʻopaʻa ʻia ka shrinkage huahana ma 0.1 ~ 0.3%.
(3) ka mea hoʻopiha, ka lapalapa ahi, ka fiber aniani; aniani fiber lōʻihi - maʻamau 6 ~ 12mm, i kekahi manawa e hālāwai me ka kiʻekiʻe mechanical waiwai i 25mm; i mea e hoʻokō ai i nā koi o ka molding fluidity, i 3mm. aniani puluniu maʻiʻo mea maʻamau 15% ~ 20%; no nā huahana kiʻekiʻe, i 25%. ʻOi aku ka haʻahaʻa o ka BMC aniani fiber ma mua o ka SMC, hiki iā ʻoe ke hoʻohui i ka hoʻopiha piha, no laila ʻoi aku ka haʻahaʻa o ke kumukūʻai i mea e hana ai i ka mea hoʻopihapiha inorganic. ʻO ka mea haʻahaʻa i mea e hana ai i ka mea hoʻopihapiha inorganic, flame retardant, aniani fiber a me ka resin he hui kemika ma waena o ka hoʻohana maʻamau o ka hoʻohana ʻana i ka silane coupling agent treatment ma mua o ka hui ʻana, hoʻohana maʻamau ʻia ka KH-560, KH-570 hopena maikaʻi e hui pū me nā mea paʻa, nā mea micronized, e like me ka calcium carbonate kaumaha me ka micronized grade, ka nui o ka nui (12 ~ 100um).
2.2 BMC proportioning koi Bmc base resin, ʻaʻole hiki ke emi iho ka nui ma mua o 20%, ʻo ka nui o ka mea hoʻomaka e pili ana i ka nui o ka crosslinking agent basically ʻaʻole pono e hoʻohui i ka nui o ka crosslinking agent i loko o ka resin content i helu ʻia no 35%, me ka nui o ka haʻahaʻa shrinkage agent e hui pū me ka nui o ka resin. ʻO ka hoʻohana ʻana i ka lāʻau lapaʻau kiʻekiʻe TBPB, filler a me ke ahi retardant (aluminum hydroxide) e hui pū me ka huina o 50% ʻoi aku ka kūpono, ʻelua ʻoi aku ka nui o ka resin, ʻoi aku ka nui o ka hui ʻana i ka ikaika o ka hale ua poino, maʻalahi e haki!
2.3 Nā kūlana kaʻina hana
(1) ka hui ʻana, ʻo ka mea mua, i ka hui ʻana i ka mea e hui like ʻia, e hoʻohui mua ka pauka i kahi umekaumaha kikoʻī liʻiliʻi, a laila e hoʻohui i kahi umekaumaha kikoʻī nui, hui mua ka wai a laila hoʻohui ʻia, ʻo ka mea hoʻomaka ka mea hope e hoʻohui ʻia, pono e hoʻohui ʻia ka mānoanoa ma mua o ka pā resin a me ka kāwili ʻana i ka polystyrene. Hoʻohui ʻia ka fiber aniani i nā pūʻulu
(2) nā kūlana kaʻina hana: pili pono nā ʻāpana kaʻina hana i ka huahana maikaʻi a maikaʻi ʻole paha. ʻO ka maʻamau me ka piʻi ʻana o ke kaomi molding, e emi ana ka emi ʻana. ʻO ke kiʻekiʻe loa ka mahana o ka mold e hana i kahi laina fusion surface, ʻaʻole like ka mea, ʻokoʻa ke koʻikoʻi o loko, maʻalahi ke haki. ʻO ka paʻa ʻana i ke kaomi no ka hoʻolōʻihi ʻana i ka manawa kūpono i ka pale ʻana i ka haki ʻana o nā ʻāpana.
(3) preheating insulation nenoaiu: haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa. No laila, pono e hoʻomaʻamaʻa mua ʻia ka mea
Ka manawa hoʻouna: Jun-10-2025
