Abstract

Questions of the influence of the particle size of solid fillers on the packing density and the maximum filler fraction (φ_m) in dispersion-filled polymer composite materials (DFPCMs) are studied. The dependence of the parameter φ_m from the diameter of solid particles of fillers is given. It is shown that, for large particles (over 50 μm), φ_m in DFPCMs can reach ~0.64 vol/vol and, for nanoparticles (1–100 nm), it can reach no more than ~0.255 vol/vol. For deformable-under-pressure and gaseous particles, as well as for dense compositions of fillers, the value of parameter φ_m in DFPCMs can reach ~0.90–0.94 vol/vol. The relationship between the size of particles and their packing and the generalized parameter of the dispersed structure Θ has been established, which makes it possible to classify the type of materials under consideration with different particle sizes according to the structural principle and establish their type of structural organization (dilute, low-filled, medium-filled, highly filled, and ultra-high-filled systems), which determines the properties of composites. An algorithm is proposed for calculating the content of filler and compositions of DFPCMs with different particle sizes, natures, and deformability of particles for the design of various types of composite structures and technological and operational properties.

中文翻译：

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不同类型结构和性能的填充聚合物复合材料的填料粒径，包装和组成

摘要

固体填料对堆积密度的颗粒尺寸和最大填料分数（φ的影响的问题，_米中填充分散体的聚合物复合材料（DFPCMs））进行了研究。的参数φ的依赖性_米从填料的固体颗粒的直径给定。据表明，对于大颗粒（超过50微米），φ_米在DFPCMs可达到〜0.64体积/体积，并且对于纳米颗粒（1-100纳米），它可以达到不超过0.255〜体积/体积。对于可变形-下压力和气态粒子，以及用于填料的致密组合物中，参数的值φ_米DFPCM中的体积可以达到约0.90–0.94 vol / vol。已经建立了颗粒尺寸及其堆积与分散结构的广义参数之间的关系，这使得可以根据结构原理对考虑不同粒径的材料类型进行分类，并确定其结构类型。组织（稀，低填充，中填充，高填充和超高填充系统），它决定了复合材料的性能。提出了一种算法，用于计算填料的含量和具有不同粒径，性质和颗粒可变形性的DFPCM的组成，以设计各种类型的复合结构以及技术和操作性能。