本文選題：表面接觸角 + 表面自由能�。� 參考：《中國塑料》2017年03期

【摘要】：通過接枝苯乙烯對秸稈粉表面進(jìn)行改性,采用毛細(xì)管上升法測定了秸稈粉、改性秸稈粉的表面接觸角,依據(jù)Washburn方程和Owens法,求解2種秸稈粉的表面自由能及其極性和非極性分量,并通過電子拉伸試驗(yàn)機(jī)、掃描電子顯微鏡研究了不同秸稈粉對木塑復(fù)合材料力學(xué)性能、微觀形貌的影響。結(jié)果表明,改性秸稈粉的表面自由能為24.77 mN/m,體現(xiàn)分子色散力的非極性分量為19.79 mN/m;而秸稈粉的表面自由能為18.90 mN/m,其非極性分量為3.75 mN/m,說明接枝共聚可有效地改善秸稈粉的表面極性;與聚合物復(fù)合時(shí),改性秸稈粉比秸稈粉具有更好的界面融合性,改性秸稈粉在基體中的分散性優(yōu)于秸稈粉。
[Abstract]:The surface contact angle of straw powder and modified straw powder were determined by capillary rising method. According to Washburn equation and Owens method, the surface contact angle of straw powder was determined by grafting styrene. The surface free energy, polar and nonpolar components of the two kinds of straw powder were calculated. The effects of different straw powder on the mechanical properties and micromorphology of wood-plastic composites were studied by means of electron tensile testing machine and scanning electron microscope. The results show that The surface free energy of modified straw powder is 24.77 mn / m, and the non-polar component of molecular dispersion force is 19.79 mn / m, while the surface free energy of straw powder is 18.90 mn / m and its non-polar component is 3.75 mn / m, which indicates that graft copolymerization can effectively improve the surface polarity of straw powder. When composite with polymer, modified straw powder has better interfacial fusion than straw powder, and the dispersion of modified straw powder in matrix is better than that of straw powder.
【作者單位】： 泰山醫(yī)學(xué)院化學(xué)與制藥工程學(xué)院;
【基金】：國家級大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃項(xiàng)目(201510439033) 泰安市科技引導(dǎo)計(jì)劃(2016GX1019) 山東省安監(jiān)局課題(201548)
【分類號】：TB332

【參考文獻(xiàn)】

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