论文部分内容阅读
用脉冲谱仪在室温下测量了不同链节结构的聚丁二烯固体核磁共振氢谱,谱图的差异明显可见。报导了由星型支化样品核磁共振谱分解得到的二个洛伦茨峰的化学位移及强度参数的温度依赖关系。 通过测量掺入不同性质炭黑的高顺聚丁二烯样品的FID信号与温度的关系,研究了炭黑与橡胶的相互作用,实验结果表明,不能肯定炭黑对橡胶补强作用的“双壳层模型”。很可能这种补强作用是由于炭黑的加入产生的相分散均匀化的结果,
Nuclear magnetic resonance (NMR) spectra of polybutadiene with different chain-link structures were measured at room temperature using a pulse spectrometer. The differences of the spectra were clearly visible. The temperature dependence of the chemical shifts and intensity parameters of the two Lorentz peaks obtained from the nuclear magnetic resonance spectroscopy of star-branched samples is reported. The interaction between carbon black and rubber was studied by measuring the relationship between the FID signal and the temperature of high-cis-polybutadiene samples doped with different types of carbon black. The experimental results show that it is not possible to confirm the effect of carbon black on the “bivalve model”. It is likely that this reinforcing effect is the result of phase dispersion homogenization due to the addition of carbon black,