In order to improve the strength and resistance of ordinary nonel tubes, calcium sulfate whiskers (CSW, treated with silane coupling agent) and maleic anhydride grafted polyethylene (PE-g-MAH) are used to control the wall material of the nonel tube that the blending of the low-density polyethylene was enhanced. The effects of mass fraction of CSW or PE-g-MAH on the tensile properties, interfacial structure, melting and crystallization characteristics, and thermal decomposition behavior of the composite system were studied, and the thermal decomposition kinetics were calculated. The results show that, relative to pure LDPE, the strength of LDPE/CSW (85/15) is increased by 7.58%, and the strength of LDPE/CSW/PE-g-MAH (84/15/1) is increased by 7.58%. The addition of CSW or PE-g-MAH has gradually changed the fracture mode of the LDPE matrix. Thermal analysis shows that CSW can reduce the crystallinity of LDPE. The melting and crystallization characteristics of LDPE/CSW/PE-g-MAH composites have little effect, but the thermal decomposition stability is improved. The kinetic analysis showed that the reaction order (n) was around 1, CSW could improve LDPE/CSW thermal decomposition activation energy, and PE-g-MAH increased the thermal decomposition activation energy of LDPE/CSW/PE-g-MAH.

中文翻译：

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CSW / PE-g-MAH法研究诺涅尔管壁材料的掺合。

为了提高普通诺涅尔管的强度和抵抗力，使用硫酸钙晶须（CSW，用硅烷偶联剂处理）和马来酸酐接枝聚乙烯（PE-g-MAH）来控制诺涅尔管的壁材料。低密度聚乙烯的共混增强。研究了CSW或PE-g-MAH的质量分数对复合体系拉伸性能，界面结构，熔融和结晶特性以及热分解行为的影响，并计算了热分解动力学。结果表明，相对于纯LDPE，LDPE / CSW（85/15）的强度提高了7.58％，而LDPE / CSW / PE-g-MAH（84/15/1）的强度提高了7.58％。加入CSW或PE-g-MAH逐渐改变了LDPE基质的断裂模式。热分析表明，CSW可以降低LDPE的结晶度。LDPE / CSW / PE-g-MAH复合材料的熔融和结晶特性影响不大，但提高了热分解稳定性。动力学分析表明，反应级数（n）约为1，CSW可以提高LDPE / CSW的热分解活化能，而PE-g-MAH可以提高LDPE / CSW / PE-g-MAH的热分解活化能。