1) cell nucleation
气泡成核
1.
Disadvantages of classical theory of cell nucleation in motion polymer melt were analyzed.
分析了经典成核理论对于动态聚合物熔体中气泡成核的局限性 ;概括了剪切流场中气泡成核的研究进展 ,并对剪切流场中泡核拉伸模型、空穴成核模型进行了详细的分析和讨论 ,指出了其对气泡成核过程解释的不足 ;介绍了最新的气泡成核中的剪切能成核理论 ,该理论较完善地解释了剪切流场中气泡成核过程 ;最后指出了气泡成核研究的发展方向。
2.
So far, the emphasis of study in this field has transformed from cell nucleation and growth theory to many factors affecting the extrusion system,so as to better control the cell density, cell distribution and cell size.
针对微孔塑料挤出的全过程,对影响气泡成核、成长及泡孔密度的诸多因素如预定型压力、熔体温度、粘度、气泡界面张力、定型卷取速度。
3.
The influence of technological condition on cell nucleation was studied in microcellular plastics extrusion processing for supercritical CO2/PS by a finite element method CFD.
通过CFD软件对超临界CO2/PS均相熔体在快速降压口模中流动状态的数值模拟,研究了工艺参数对CO2/PS均相熔体气泡成核的影响。
2) bubble nucleation
气泡成核
1.
Study of Bubble Nucleation Theory under Shearing Flow;
剪切流场中气泡成核理论的研究
2.
The influence of tension effect on the polymer's freedom volume and as a result of it on the bubble nucleation when extrusion and foaming molding with supercritical CO2 fluid as foaming agent are analyzed.
分析采用超临界CO_2流体挤出发泡成型时拉伸作用对聚合物分子自由体积的影响,以及由此引起的对气泡成核的影响。
3.
In the foam process of cellular plastics, bubble nucleation has decisive effect on cell density and cell distribution, so it is the crucial factor to control the foam quality.
前人对泡沫塑料气泡成核过程的研究基本上都是以经典成核理论为基础进行的。
3) bubble nucleation
气泡核形成
4) bubbled nucleation
气泡核
5) bubble nucleus
气泡核
1.
The addition of nuclcant agent N in synthesizing Expanded Polystyrene(EPS) to improve bubble quality of EPS was introduced, Studying and analyzing the bubble holes, photos of EPS proved that nucleant agent had an effect of producing large quantities of bubble nucleus, made the bubble holes close and even and improved bubble times.
通过EPS的发泡泡孔照片的研究分析,证明了成核剂N具有形成大量气泡核的作用,使泡孔细密均匀,发泡倍率提高,并确认了添加量在1000ppm至4000 ppm之间效果最好。
2.
The stability of a bubble nucleus in surface reentrant is analyzed.
系统地分析了气泡核在表面凹腔内的生长和收缩过程，通过对气泡核平衡机理的探讨，获得了修正的稳定性判据，进而研究沸腾起始及空腔钝化的条件。
6) bubble chamber
[核]气泡室
补充资料：成核
分子式：
CAS号：
性质：形成矿物晶体的最初阶段(形成晶核)的过程。其中，由均匀过饱和溶液中自发形成晶核称为均相成核，而在亚稳态溶液中放入晶种促进成核称为次级成核。借助某些固相基质表面促进晶核形成称为异相成核。异相成核是生物体内无机矿物形成的主要方式。
CAS号：
性质：形成矿物晶体的最初阶段(形成晶核)的过程。其中，由均匀过饱和溶液中自发形成晶核称为均相成核，而在亚稳态溶液中放入晶种促进成核称为次级成核。借助某些固相基质表面促进晶核形成称为异相成核。异相成核是生物体内无机矿物形成的主要方式。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条