CAJ | 학술논문

结合介观动力学方法和三维弹簧格子模型，研究了嵌段共聚物相容剂对相容性较差的聚合物二元共混体系力学性能的影响。在适当范围内不断增加嵌段共聚物相容剂的用量，研究了相容剂含量对体系杨氏模数及拉伸强度的影响，同时也对不同体系材料的破碎位点进行了分析。结果表明，未加入相容剂的二元共混体系在拉伸模拟中表现出较低的拉伸强度，而适量添加相容剂可以显著提升材料的拉伸强度，随着相容剂含量的增加，共混体系的破碎位点会发生转移并最终改善材料的整体性能。而相容剂的加入对体系杨氏模数的影响较小。该连续模拟方法为关联聚合物复合体系的微观结构和宏观力学性能提供了一条高效的途径。
결합개관동역학방법화삼유탄황격자모형，연구료감단공취물상용제대상용성교차적취합물이원공혼체계역학성능적영향。재괄당범위내불단증가감단공취물상용제적용량，연구료상용제함량대체계양씨모수급랍신강도적영향，동시야대불동체계재료적파쇄위점진행료분석。결과표명，미가입상용제적이원공혼체계재랍신모의중표현출교저적랍신강도，이괄량첨가상용제가이현저제승재료적랍신강도，수착상용제함량적증가，공혼체계적파쇄위점회발생전이병최종개선재료적정체성능。이상용제적가입대체계양씨모수적영향교소。해련속모의방법위관련취합물복합체계적미관결구화굉관역학성능제공료일조고효적도경。
The compatibilizing effects of the addition of a block copolymer on the mechanical properties of immiscible polymer blends were studied using a combined simulation method;this method used MesoDyn to determine the morphology and a probabilistic lattice spring model (LSM) to determine the mechanical properties. The mechanical properties, including the Young's modulus, tensile strength, and fracture position, were analyzed as a function of the concentration of the additive. The simulation results showed that the polymer blends without any compatibilizer had poor mechanical properties, compared with the original components, primarily because of the lack of stress transfer across the sharp interface. The tensile strength increased dramatical y with the addition of the compatibilizer. The fracture position moved from the interface further into the matrix with increases in the volume fraction of the compatibilizer, leading to the enhancement of the tensile strength. The Young's modulus varied slightly with increases in the concentration of the additive. These studies provide an efficient path for the correlation of the complex morphologies of polymer blends with their mechanical response.