Three-tower continuous distillation process of ethyl acetate from aldehyde condensation and purification by gas-phaseoxidation of acetic acid and ethylene were also discussed.
Gas-phaseoxidation treatment resulted in distrihution of some micro-pores and ditches at the carbon fiber surface and led to stress concentration therefore, the composite strength was not high.
结果表明：空气氧化处理碳纤维表面形成微孔和刻蚀沟槽，容易形成应力集中，复合材料的强度不高；
3
Based on different physical and chemical properties of components in synthetic rod, a new purification process for synthetic diamond by gasphaseoxidation method is proposed.