BMC bụ mkpọbiri nkeNnukwu ihe eji akpụzi iheN'asụsụ Bekee, aha ndị China bụ Bulk Molding Compound (a na-akpọkwa ya: unsaturated polyester glass fiber ekwadoro Bulk Molding Compound) site na resin mmiri mmiri, ihe na-eme ka ọ dị ala, ihe na-ejikọ eriri, ihe na-eme ka ihe dị n'ime ya, ihe na-eme ka ihe dị n'ime ya dị mkpụmkpụ na ihe ndị ọzọ dị na ngwakọta anụ ahụ nke mgbagwoju anya ahụ, n'ọnọdụ okpomọkụ na nrụgide, njikọ nke unsaturated polyester na styrene, mmeghachi omume polymerization na-eme. N'okpuru okpomọkụ na nrụgide, polyester na styrene nke unsaturated na-ejikọta ma gwọọ site na mmeghachi omume polymerization. Njirimara igwe ya dị mma na ihe onwunwe eletriki dị mma, yana iguzogide okpomọkụ na ihe nhazi dị mma ka ejiri ya mee ihe n'ọtụtụ ebe na ngwa eletriki, ngwaọrụ, mmepụta ụgbọala, ụgbọelu, njem, ụlọ ọrụ owuwu.
Sistemụ nhazi
1. Resin polyester na-enweghị afọ ojuju: nwere resin pụrụ iche nke smc/bmc, ọkachasị m-phenyl elu, iguzogide mmetụta, iguzogide nchara, iguzogide arc, dabara adaba maka mmepụta nke ngwaahịa ngọngọ ma ọ bụ anisotropic
2. Ihe na-ejikọ njikọ; na monomer styrene, ọnụọgụ nke ihe ruru 30% ~ 40%, dabere na ọdịnaya nke ihe abụọ dị na polyester na-enweghị afọ ojuju na oke nke ihe abụọ trans na ihe abụọ cis, oke nke monomers na-ejikọ njikọ, nwere ike nweta ọgwụgwọ zuru oke karịa.
3. Ihe mmalite nwere ihe na-agwọ okpomọkụ dị elu, tert-butyl peroxybenzoate (TBBB) bụ nke ihe na-agwọ okpomọkụ dị elu a na-ejikarị eme ihe, okpomọkụ nke mmiri mmiri nke ogo 104 nke okpomọkụ ịkpụzi nke ogo 135 ruo 160.
4. Ihe na-eme ka obere ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ọ ghara ịdị mma, nke a na-ejikarị eme ka okpomọkụ gbasaa iji belata mkpụkọ ihe e ji akpụ ihe. N'ozuzu, a ga-achịkwa ọnụego mkpụkọ nke ngwaahịa ahụ na 0.1 ~ 0.3%, yabụ a ga-achịkwa usoro onunu ogwu ahụ nke ọma.
5. Ihe ndị e ji eme ka ihe sie ike: njikọta ejiri eme ihe nke a na-ejikarị eme ihe 6 ~ 12mm eriri dị mkpụmkpụ 6 na-egbochi ire ọkụ site na iji Al2O3.3H2O, na-agbakwunye obere ihe mgbochi ire ọkụ ọhụrụ nwere phosphorus, alumina mmiri mmiri na-arụkwa ọrụ dị ka ihe nzacha 7. Ihe nzacha nwere ike ibelata ọnụ ahịa imeziwanye ihe onwunwe eletriki na mgbochi ire ọkụ. Calcium carbonate bụ ihe nzacha kachasị ogologo ejiri mee ihe nke nwere ezigbo arụmọrụ zuru oke, n'ozuzu ya n'ụdị obere ntụ ntụ mgbe ejiri ya mee ihe wee tinye ya.
Usoro BMC
1. Lezienụ anya na usoro ihe ndị e ji etinye ihe. A gwakọtara ya na igwe ịkpụcha ihe ụdị z, igwe ịkpụcha ihe nwere ngwaọrụ ikpo ọkụ, ma ngwakọta ahụ hà nhata, enwere ike ịhụ mado agba ma ọ bụ agba carbon dabara adaba, ihe dị ka nkeji 15 ~ 18.
2. Eriri iko dị mkpụmkpụ iji jikọta nke ikpeazụ, n'oge iji jikọta ọtụtụ eriri ndị gbajiri agbaji, na-emetụta ike nke
3. A ga-echekwa ihe BMC n'okpomọkụ dị ala, nke na-abụkarị ogo Celsius 10, okpomọkụ dị elu, resin a na-anaghị ejupụta na ya dị mfe ijikọ ma gwọọ, wee dozie nsogbu nhazi ịkpụzi.
4. Okpomọkụ ịkpụzi: ogo 140 ma ọ bụ karịa, okpomọkụ ebu elu na nke ala 5 ~ ogo 10, nrụgide ịkpụzi 7mpa ma ọ bụ ihe dị ka ya, oge ijide 40 ~ 80s/mm
Nchọpụta ụlọ ọrụ mmepụta ihe
1. Mgbawa ngwaahịa: nsogbu ịgbawa ngwaahịa bụ ihe a na-ahụkarị, ọkachasị n'ọnọdụ okpomọkụ dị ala n'oge oyi. Ihe a na-akpọ mgbawa na-ezo aka na ngwaahịa ndị sitere na nrụgide dị n'ime, mmetụta mpụga ma ọ bụ ọnọdụ gburugburu ebe obibi na mmetụta ndị ọzọ na elu ma ọ bụ mgbawa dị n'ime.
2. Ngwọta; kpọmkwem site na ihe ndị e ji arụ ọrụ, nha na usoro a ga-esi dozie.
2.1 Nhọrọ na nhazi nke ihe eji arụ ọrụ
1) Resin bụ matrix nke BMC, resin polyester na-enweghị afọ ojuju, vinyl ester,resin phenolic, melamine, wdg. Resin bụ ihe na-agwọ ngwaahịa ahụ, nke nwere ike dị mkpa. Ya mere, ojiji nke resin pụrụ iche nke smc/bmc, bụ resin ụdị m-phenylene, resin m-phenylene karịa ụdị o-phenylene nke viscosity dị elu, yabụ na mgbakwunye na resin n'onwe ya, shrinkage dị obere, nwere ike ịnabata monomers ndị ọzọ na-ejikọ ọnụ, nke mere na njupụta nke njupụta na-abawanye, ọnụego shrinkage na-ebelata.
(2) tinye ihe mejupụtara obere ihe na-ebelata okpomọkụ; unsaturated polyester resin curing rate contraction nke ruru 5 ~ 8%, tinye ụdị ihe na-emeju ihe ka karịrị 3%, ngwaahịa na-enwekarị 0.4% na-ebelata ọsọ ha, yabụ tinye thermoplastic resins, iji thermoplastic resins iji wepụ mgbasawanye okpomọkụ nke thermal contraction nke akụkụ ndị ahụ. pmma, ps add na monomer styrene agwakọta na mgbasa nke ka mma, mgbakwunye nke pmma . Mmecha ka mma. Enwere ike ijikwa 0.1 ~ 0.3%.
(3) ihe na-emeju ihe, ihe na-egbochi ire ọkụ, eriri iko; ogologo eriri iko - n'ozuzu ya bụ 6 ~ 12mm, mgbe ụfọdụ iji mezuo ihe ndị dị elu nke igwe ruo 25mm; iji mezuo ihe achọrọ maka ịkpụzi mmiri, ruo 3mm. Ọdịnaya eriri iko na-abụkarị 15% ~ 20%; maka ngwaahịa arụmọrụ dị elu, ruo 25%. Ọdịnaya eriri iko BMC dị ala karịa SMC, ị nwere ike itinye ihe na-emeju ihe, yabụ ọnụ ahịa ya dị ala iji mee ihe na-emeju ihe na-adịghị mma. Dị ala iji mee ka ihe na-emeju ihe na-adịghị mma, ihe na-eme ka ire ọkụ, eriri iko na resin nwee ngwakọta kemịkalụ n'etiti ojiji izugbe nke ọgwụgwọ ihe na-ejikọ silane tupu agwakọta ya, mmetụta KH-560, KH-570 a na-ejikarị eme ihe dị mma iji jikọta ihe siri ike ndị ahụ dị mma, ihe ndị a na-eme ka micronized dị, dị ka calcium carbonate dị arọ nwere ọkwa micronized, nha ihe 1 ~ 10um (dakọtara na 1250 mesh)
2.2 Ihe achọrọ maka nhazi BMC Resin ntọala Bmc, ego ahụ enweghị ike ịbụ ihe na-erughị 20%, ego mmalite ya metụtara ego nke ihe na-ejikọ njikọ n'ụzọ bụ isi anaghị etinyekwu ego nke ihe na-ejikọ njikọ n'ime ọdịnaya resin ruru 35%, na mgbakwunye na ego nke ihe na-ebelata njikọta dị ala dabere na ego resin. Ojiji nke ihe na-agwọ okpomọkụ dị elu TBPB, ihe na-ejupụta na ihe na-egbochi ọkụ (aluminum hydroxide) iji jikọta mkpokọta ihe dị ka 50% kwesịrị ekwesị, ọ dị okpukpu abụọ karịa resin, oke iji jikọọ ike nke ihe owuwu ahụ mebiri emebi, ọ dị mfe ịgbawa!
2.3 Ọnọdụ usoro mmepụta
(1) ịgwakọta, nke mbụ, mgbe a na-agwakọta ihe a ga-agwakọta nke ọma, ntụ ntụ ahụ na-ebu ụzọ tinye obere ike ndọda kpọmkwem, wee tinye nnukwu ike ndọda kpọmkwem, a na-ebu ụzọ gwakọta mmiri mmiri ahụ wee tinye ya, ihe na-amalite bụ nke ikpeazụ a ga-agbakwunye, a ga-etinye ihe na-eme ka ọ sie ike tupu e jiri resin mado ya na polystyrene gwakọta ya. A na-agbakwunye eriri iko n'otu n'otu.
(2) ọnọdụ usoro ịkpụzi: paramita usoro ịkpụzi na-emetụta ngwaahịa ahụ nke ọma ma ọ bụ nke ọjọọ. Ọtụtụ mgbe, ka nrụgide ịkpụzi na-abawanye, mbelata na-ebelata. Okpomọkụ ebu dị oke elu ga-emepụta ahịrị njikọta elu, ihe ahụ adịghị otu, nrụgide dị n'ime dị iche, ọ dị mfe ịgbawa. Ijide nrụgide maka oge kwesịrị ekwesị na-enyere aka igbochi mgbawa nke akụkụ ahụ.
(3) sistemụ mkpuchi tupu oge eruo: akụkụ okpomọkụ dị ala dị mfe ịgbawa. Ya mere, a ga-ekpo ọkụ ihe ahụ ọkụ.
Oge ozi: Juun-10-2025
