Ụkpụrụ Nhazi na Ọrụ:
Ihe nnwale ọsọ agbaze agbaze bụ ụdị mita plastik extrusion. N'okpuru ọnọdụ okpomọkụ akọwapụtara, a na-ekpo ọkụ ihe nlele a ga-anwale ruo mgbe ọ gbazere agbaze site na ọkụ dị elu. A na-ewepụta ihe nlele agbaze agbaze site na obere oghere nke dayameta akọwapụtara n'okpuru ibu arọ akọwapụtara. N'ime mmepụta plastik nke ụlọ ọrụ mmepụta ihe na nyocha nke ụlọ ọrụ nyocha sayensị, a na-ejikarị "ọsọ agbaze agbaze (oke)" anọchite anya mmiri mmiri, viscosity na ihe ndị ọzọ dị na ihe polymer na steeti agbaze agbaze. Ihe a na-akpọ ndeksi agbaze na-ezo aka na nkezi ibu nke akụkụ ọ bụla nke ihe nlele a gbazere agbaze agbanwere na ọnụọgụ mwepụ n'ime nkeji iri.
A na-egosi ngwa MFR maka ọsọ mmiri ịgbaze (oke), nke bụ: gram kwa nkeji iri (g/min).
Usoro ahụ bụ:
MFR(θ, mnom) = tref . m / t
Ebe: θ —- okpomọkụ nnwale
Mnom— - ibu aha (Kg)
m —- nkezi oke nke mbepụ, g
tref —- oge ntụaka (nkeji 10), S (600s)
t ——- oge nke njedebe, s
Ihe atụ:
A na-egbutu otu ìgwè ihe atụ plastik kwa sekọnd iri atọ, ihe si na oke nke akụkụ nke ọ bụla pụta bụ: 0.0816 grams, 0.0862 grams, 0.0815 grams, 0.0895 grams, 0.0825 grams.
Uru nkezi m = (0.0816 + 0.0862 + 0.0815 + 0.0895 + 0.0825) ÷ 5 = 0.0843 (grams)
Tinye usoro ahụ n'ime usoro: MFR = 600 × 0.0843 / 30 = 1.686 (grams kwa nkeji 10)