BMC bụ mkpọmkpọ nke plastik thermosetting polyester nke e ji eriri iko mee ka ọ sie ike, ọ bụkwa ụdị plastik thermosetting nke a na-ejikarị eme ihe ugbu a.
Atụmatụ na ngwa BMC
BMC nwere ezigbo ihe onwunwe anụ ahụ, eletriki na igwe, ya mere o nwere ọtụtụ ojiji, dịka imepụta akụkụ igwe dịka paịpụ nnabata, mkpuchi valvụ, na mkpuchi oghere na rim nke a na-ejikarị eme ihe. A na-ejikwa ya nke ọma na ụgbọelu, ihe owuwu, arịa ụlọ, ngwa eletriki, wdg, nke chọrọ iguzogide ala ọma jijiji, mgbochi ire ọkụ, ịma mma na ogologo oge.
Njirimara Nhazi BMC
1. Mmiri mmiri: BMC nwere ezigbo mmiri mmiri ma nwee ike ịnọgide na-enwe ezigbo mmiri mmiri n'okpuru obere nrụgide.
2. Ọgwụgwọ: Ọsọ ọgwụgwọ nke BMC dị ngwa ngwa, oge ọgwụgwọ ahụ bụkwa sekọnd 30-60/mm mgbe okpomọkụ ịkpụzi ya dị 135-145°C.
3. Ọkwa mbelata: Ọkwa mbelata nke BMC dị obere nke ukwuu, n'etiti 0-0.5%. Enwere ike ịgbanwe ọnụego mbelata site na itinye ihe mgbakwunye dịka ọ dị mkpa. Enwere ike kewaa ya n'ọkwa atọ: enweghị mbelata, obere mbelata, na nnukwu mbelata.
4. Agba agba: BMC nwere ezigbo agba agba.
5. Ihe ọghọm: oge ịkpụzi ya dị ogologo, burr ngwaahịa ahụ buru ibu nke ukwuu.
Nhazi mkpakọ BMC
Nhazi BMC nke a na-akpọ "compression molding" bụ itinye obere ihe mejupụtara ihe e ji akpụ akpụ (agglomerate) n'ime ihe e ji akpụ akpụ, mee ka ọ dị ọkụ, wee mee ka ọ sie ike ma kpụọ ya. Usoro a kapịrị ọnụ bụ ịtụ → inye nri → ịkpụ akpụ → ijupụta (agglomerate ahụ nọ n'okpuru nrụgide Ọ na-asọ ma na-ejupụta ebu ahụ dum) → ịcha → (a gwọrọ ya nke ọma mgbe ọ debechara ya na nrụgide na okpomọkụ edobere maka oge ụfọdụ) → imepe ebu ahụ ma wepụ ngwaahịa ahụ → ịcha achịcha ahụ, wdg. → ngwaahịa emechara.
Ọnọdụ usoro nhazi mkpakọ BMC
1. Nrụgide ịkpụzi: 3.5-7MPa maka ngwaahịa nkịtị, 14MPa maka ngwaahịa nwere ihe achọrọ elu dị elu.
2. Okpomọkụ ịkpụzi: Okpomọkụ ebu na-adịkarị 145±5°C, a pụkwara ibelata okpomọkụ ebu a kapịrị ọnụ site na 5-15°C maka ịkwatu ya.
3. Ọsọ mkpụchi ebu: a pụrụ imecha mkpụchi ebu kacha mma n'ime sekọnd iri ise.
4. Oge ọgwụgwọ: Oge ọgwụgwọ nke ngwaahịa ahụ nwere ọkpụrụkpụ mgbidi nke 3mm bụ nkeji atọ, oge ọgwụgwọ nke nwere ọkpụrụkpụ mgbidi nke 6mm bụ nkeji 4-6, oge ọgwụgwọ nke nwere ọkpụrụkpụ mgbidi nke 12mm bụ nkeji 6-10.
Oge ozi: Mee-13-2021
