CAJ | 학술논문

首先拟定了液态簧振动力学谱仪（RMS-L）测量液态复杨氏模量重复性的验证方案，即选取甘油作为验证材料，验证参量为对应于甘油液体的仪一弛豫过程的复杨氏模量．然后，选取了16个甘油样品，并分别对每一个样品进行一次从室温至-120K的降温和升温循环测量．实验结果表明，16个甘油样品的α-弛豫过程所对应的储能和损耗模量相差较小，16个甘油样品中，对应于α-弛豫过程的损耗模量峰的半高宽的相对标准偏差仅为4％，样品最大相对偏差也只有6％，表明本课题组自制的RMS-L测量的重复性相当好．另外，在本文所用2．42-4．36mg质量范围内，并未发现损耗模量峰的半高宽与样品质量有明确的依赖性．值得指出的是，在238K附近，还发现一个微妙的新过程，其储能模量的变化为α-弛豫的-5％，其物理起源仍不清楚．
수선의정료액태황진동역학보의（RMS-L）측량액태복양씨모량중복성적험증방안，즉선취감유작위험증재료，험증삼량위대응우감유액체적의일이예과정적복양씨모량．연후，선취료16개감유양품，병분별대매일개양품진행일차종실온지-120K적강온화승온순배측량．실험결과표명，16개감유양품적α-이예과정소대응적저능화손모모량상차교소，16개감유양품중，대응우α-이예과정적손모모량봉적반고관적상대표준편차부위4％，양품최대상대편차야지유6％，표명본과제조자제적RMS-L측량적중복성상당호．령외，재본문소용2．42-4．36mg질량범위내，병미발현손모모량봉적반고관여양품질량유명학적의뢰성．치득지출적시，재238K부근，환발현일개미묘적신과정，기저능모량적변화위α-이예적-5％，기물리기원잉불청초．
According to the measurement principle of reed-vibration mechanical spectroscopy for liquids （RMS-L）, a checkout protocol for measurement repetitions of the RMS-L was first studied out, i.e. glycerol and the complex Young＇s moduli of its m-relaxation were chosen as the checkout material and quantity, respectively. Afterward, 16 glycerol liquid samples were used, and measurements of cooling and heating cycles from room temperature to about the nitrogen liquefying point were done for each sample. The experimental results indicate that the differences of the energy-storing and loss moduli of α-relaxation for the 16 samples are quite small, and specifically, the relative standard and maximum deviations of the half-width of the α-relaxation peak are only 4% and 6%, respectively. Moreover, the half-width has no clear mass dependence of the samples from 2.42 to 4.36mg. It is worthy to point out that a new subtle process was discovered near 238K whose amplitude is only about 5% of the α-relaxation, and its physical origin is still not clear.