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利用自行设计制造的微纳层叠挤出成型设备制备了不同基体材料的9层MMT含量为3%的试样。通过SEM、TEM和WAXD测试,研究了基体不同物化性质对MMT在基体组份中分散取向的影响。结果表明:对于不同基体材料PP(K7708),PP(T30S),LLDPE(DFDA7042)和HDPE(7000F)9层MMT含量为3%的MMT纳米复合材料,不同基体高分子物理与化学性质对MMT的分散取向效果不同;基体材料熔体黏度高、分子链结构单一的能促进MMT剥离分散;通过改变基体材料可以达到MMT在基体材料中可控取向分散的目的,其中,在以HDPE(7000F)为基体组份中,被剥离的MMT以单片形式分散在基体组份中的数量最多。
The samples with 9 layers MMT content of 3% were prepared with different substrate materials by using micromanipulation extrusion molding equipment designed and manufactured by ourselves. The effects of different physico-chemical properties of matrix on the dispersion of MMT in the matrix were investigated by SEM, TEM and WAXD. The results show that the physical and chemical properties of MMT nanocomposites with different substrate matrix MMP content of 3% for PP (K7708), PP (T30S), LLDPE (DFDA7042) and HDPE (7000F) The orientation of MMT is different; the high melt viscosity of the matrix material and the single molecular chain structure promote the delamination and dispersion of the MMT; the controlled orientation dispersion of the MMT in the matrix material can be achieved by changing the matrix material. Among them, In the matrix component, the stripped MMT is monolithically dispersed in the matrix component in the largest amount.