(中南大學(xué) 粉末冶金國(guó)家重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083)
摘 要: 對(duì)粉末注射成形粘結(jié)劑組分的熱力學(xué)參數(shù)進(jìn)行了計(jì)算，并通過(guò)實(shí)驗(yàn)觀察得到了組分相容性的判據(jù)。分別以PVB，EVA，PMMA為高分子組分，討論了它們與低分子量組分PEG的相容性，并通過(guò)混煉機(jī)混煉和偏光顯微鏡觀察，得到了ΔG/T＜1.5可工藝相容、ΔG/T＞3.0工藝不相容的熱力學(xué)判據(jù)。
關(guān)鍵字: 粉末注射成形; 熱力學(xué); 相容性; 粘結(jié)劑
for powder injection molding
（State Key Laboratory for Powder Metallurgy,
Central South University, Changsha 410083, P.R.China）
Abstract:Thermodynamic parameters of binder ingredients for powder injection molding were calculated. These ingredients of binder were mixed in order to get a means to determine theoretically the compatibility of ingredients. Polymers, such as PVB, EVA and PMMA were used respectively to mix with PEG. The micrograph of PEG-PMMA mixtures is also adopted to certify that when ΔG/T＜1.5, binder ingredients are compatible, while ΔG/T＞3.0, binder ingredients are incompatible.
Key words: powder injection molding； thermodynamics； compatibility； binder
