CAJ | 학술논문

利用高压毛细管流变仪研究了纳米CaCO3和微米CaCO3分别单独填充和复配填充聚丙烯（PP）体系的流变行为。对纳米CaCO3填充PP体系,CaCO3的加入使体系的表观黏度（ηa）下降,但随着CaCO3的质量分数增加,ηa呈上升趋势。当CaCO3的质量分数为10%时,两种微米CaCO3（1.8μm和25μm）填充体系的ηa接近,但低于纳米CaCO3填充体系的;随着CaCO3的质量分数增加（如30%）,三种体系的ηa接近。对纳米CaCO3和微米CaCO3复配填充PP体系,CaCO3的总质量分数为10%时,当微米CaCO3的质量低于CaCO3总质量的50%时,体系的ηa与纳米CaCO3单独填充体系相比呈显著下降;但随着CaCO3的总质量分数增加,ηa下降的幅度变小。
이용고압모세관류변의연구료납미CaCO3화미미CaCO3분별단독전충화복배전충취병희（PP）체계적류변행위。대납미CaCO3전충PP체계,CaCO3적가입사체계적표관점도（ηa）하강,단수착CaCO3적질량분수증가,ηa정상승추세。당CaCO3적질량분수위10%시,량충미미CaCO3（1.8μm화25μm）전충체계적ηa접근,단저우납미CaCO3전충체계적;수착CaCO3적질량분수증가（여30%）,삼충체계적ηa접근。대납미CaCO3화미미CaCO3복배전충PP체계,CaCO3적총질량분수위10%시,당미미CaCO3적질량저우CaCO3총질량적50%시,체계적ηa여납미CaCO3단독전충체계상비정현저하강;단수착CaCO3적총질량분수증가,ηa하강적폭도변소。
Rheological behaviors of polypropylene（PP） filled with calcium carbonate（CaCO3） of nanoparticles and micron particles and their size to size assembling respectively were studied by capillary rheometry.The apparent viscosity（ηa） of PP filled with CaCO3 nanoparticles firstly decreased with the addition of CaCO3 and then increased with increasing the mass fraction.The ηa of PP filled with micron CaCO3 of varying particle size（1.8 μm and 25 μm） were similar,but lower than that of PP filled with CaCO3 nanoparticles at the mass fraction of 10 %,with increasing the mass fraction of CaCO3（i.e.30 %）,the ηa of different systems got close.For PP filled with CaCO3 of nanoparticles and micron particles in size to size assembling,while the mass of micron particles in fillers mass below 50 %,the ηa decreased sharply comparing to PP filled with nanoparticles solely at the mass fraction of 10%,however,with the rise of filler＇s mass fraction,the extent of the decrease of ηa reduced.