MECHANICAL-PROPERTIES OF NYLON 6-CLAY HYBRID
MECHANICAL-PROPERTIES OF NYLON 6-CLAY HYBRID
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DOI：
10.1557/jmr.1993.1185
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发表时间：
1993-05-01
影响因子：
2.7
通讯作者：
KAMIGAITO, O
中科院分区：
文献类型：
--
作者：
KOJIMA, Y;USUKI, A;KAMIGAITO, O
合成了各种尼龙6-粘土杂化物，如尼龙6与蒙脱土和皂石的硅酸盐层的分子复合物，NCH和NCHP。为了估计这些混合动力车的机械性能，进行了拉伸，弯曲，冲击和热变形测试。发现NCH在强度和模量方面上级，并且在冲击强度方面与尼龙6相当。NCH（蒙脱土：4.7wt. %）为152 ℃，比尼龙6高87 ℃。在NCHP中，皂石对这些力学性能的提高作用较小。NCH和NCHP的模量和热变形温度随粘土矿物含量的增加而增加。结果发现，这些性能很好地描述了从在玻璃化转变温度下的储能和损耗模量计算的约束区域的贡献。根据弹性模量的混合定律，在120 ℃下的模量E和约束区域C的分数之间获得以下表达式，E（n）= E（c）n。C，其中n和E（c）（受约束区域的模量）的值分别为0.685和1.02 GPa。
Various nylon 6-clay hybrids, such as molecular composites of nylon 6 and silicate layers of montmorillonite and saponite, NCH's and NCHP's, respectively, have been synthesized. To estimate the mechanical properties of these hybrids, tensile, flexural, impact, and heat distortion tests were carried out. NCH was found superior in strength and modulus and comparable in impact strength to nylon 6. The heat distortion temperature (HDT) of NCH (montmorillonite: 4.7 wt. %) was 152-degrees-C, which was 87-degrees-C higher than that of nylon 6. In NCHP, saponite had a smaller effect on the increase of these mechanical properties. The modulus and HDT of NCH and NCHP increased with an increase in the amount of clay minerals. It was found that these properties were well described by the contribution of the constrained region calculated from the storage and loss modulus at the glass transition temperature. According to the mixing law on elastic modulus, the following expression was obtained between the modulus E at 120-degrees-C and the fraction of the constrained region C, E(n) = E(c)n . C, where the values of n and E(c) (modulus of the constrained region) were 0.685 and 1.02 GPa, respectively.