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Keywords Microcellular foams;Extrusion;Homogeneous polymer gas phase; 微孔塑料;挤出成型;聚合物-气体均相体系;
Keywords microcellular foam plastics;continuous extrusion;injection molding;supercritical carbon dioxide; 微孔发泡塑料;连续挤出;注射成型;超临界二氧化碳;
Keywords microcellular foaming;montmorillonite;interphase;nucleation; 微孔发泡;蒙脱土;界面成核;
Microcellular foams are newly developed materials characterized by the presence of multiple small cells. 微孔发泡塑料是一种内部含有很多小泡孔的新型材料，具有很多优异性能。
By this special way, the formation of microcellular foams can be tested on-line and in time. 采用这一方法可直观地观察气泡的成核和气泡的生长状况,从而达到对微孔泡沫塑料的成型进行在线实时检测的目的。
Introduce the characteristics and application range of microcellular foams, analyse the technological study situation at home and abroad. 介绍了微孔泡沫塑料的特点及其应用,分析了国内外对微孔泡沫塑料的研究现状。
Microcellular foams of polypropylene/high-density polyethylene(PP/HDPE) blend and its nanocomposites were prepared using high-pressure vessel. 通过间歇法制备了聚丙烯(PP)/高密度聚乙烯(HDPE)共混物及其纳米复合材料的微孔塑料。
The method can control the density and aperture of the foams, thus the microcellular foams can be produced by the subsistent extruder. 此方法可以有效控制发泡材料泡孔密度和泡孔孔径范围，并可以应用现有挤出机，降低设备成本。
The aim of the introdution is to arouse the attention to this wildly applied and friendly environmental material,so as to promote further developments of microcellular foams. 目的是通过介绍引起人们对这种应用广泛、环境友好新材料的重视,从而促进对微孔泡沫塑料进一步的研究和开发。
Introduce the application of the optical image technology in the study of formation of microcellular foams to observe the nucleation and growth of bubbles. 提出了在微孔泡沫塑料的成型研究中,利用光学成像技术来观察挤出熔体中的发泡情况的方法。
The merit,usage of microcellular foam plastics and the importance of nucleation nozzle in the processing is generalized. 概括了微孔塑料的优点、用途及成核喷嘴对加工过程的重要作用;
Ultra thin wave absorptive structural boards were prepared by technologies for surficial microcellular foam,carbon fiber coated interlayer and glassfiber reinforced plastics. 通过表层微孔发泡以及内层喷涂碳纤维工艺,以玻璃钢复合成型为基础制备了超薄吸波结构板材。
By now, the main technologies used to manufacture microcellular foams are periodic means, improved batch means, injection molding means, pressure molding means and continuous extrusive means. 目前微孔泡沫塑料的主要成型方法有间歇成型法、注射成型法、模压成型法和连续挤出成型法等。
Keywords nucleation density;nucleation time;microcellular foam; 成核密度;成核时间;微孔塑料;
The mathematical model of cell size growth during microcellular foam injection molding process was studied, and the mathematical relationship between process parameters and cell size was established. 摘要研究了微细发泡注塑成型工艺中微泡长大的数学模型，建立了成型工艺和微泡尺寸之间的数学关系。
In this paper the PP/POE/ Talc microcellular foam composites were prepared by the two methods of injection-molding-two times opening mold molding method and unclenching molding method. 本文通过二次开模法和松退法注射成型工艺制备出PP/POE/滑石粉复合发泡体系。
The production technology of PVC wood/plastics composite microcellular foam products were introduced from the aspect of raw material choice,the formula determines,technological requirement and so on. 实际结合理论系统的在原料选择、配方确定、工艺要求等方面介绍了PVC木塑复合微孔发泡材料挤出成型的生产技术及一些注意事项。
The properties,formation theory and technologies of microcellular foam plastics are introduced,and the technological difficulties in the formation of microcellular foam plastics are analysed. 详细介绍了微孔泡沫塑料的性能、成型原理和成型技术,具体分析了微孔泡沫塑料成型的技术难点。
Keywords microcellular plastics;continuous extrusion; 微孔塑料;连续挤出;
The progress of research on preparing methods of microcellular PC foams was summarized, including batch microcellular foaming,continuous extrusion and mould pressing . 阐述了聚碳酸酯(PC)微孔泡沫塑料的制备方法,包括间歇成型法、连续挤出成型法、模压成型法;