Investigation on the cell nucleation and cell growth in microcellular foaming by means of temperature quenching
文献类型：期刊论文
| 作者 | Sun, XH; Liu, HJ; Li, G; Liao, X; He, JS |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2004-07-05 |
| 卷号 | 93期号:1页码:163-171 |
| 关键词 | Microcellular Foaming Supercritical Co2 Nucleation Growth Structure |
| ISSN号 | 0021-8995 |
| DOI | 10.1002/app.20445 |
| 英文摘要 | The cell nucleation and real-time cell growth with increasing cell growth time in microcellular foaming were investigated by means of temperature quenching in a supercritical CO2 pressure-quench process. Samples of uniform size and shape were saturated in a vessel under conditions of 100 - 180degreesC and 30 MPa, and then depressurized to the atmosphere in 10 s. After depressurization, these samples were removed from the vessel at prescribed intervals, and immediately immersed in an ice-water slurry to obtain foamed samples with various cell growth times. It was found that the nucleation density is closely correlated to the gas absorption capacity of the polymer matrix, so that the final cell density should not be adopted as the nucleation density, as done commonly. The change of cell structure and mass density with increasing cell growth time was dominated by gas diffusion behavior, which was strongly influenced by the temperature. The final cell structure was mainly determined by the cell growth step, where gas diffusion played a key role. The final cell density was in direct proportion to the gas remaining in the substrate, which ranged from 6.0 x 10(9) to 4.7 x 10(6) cells/cm(3). (C) 2004 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000221303800020 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55611]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | He, JS |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, XH,Liu, HJ,Li, G,et al. Investigation on the cell nucleation and cell growth in microcellular foaming by means of temperature quenching[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2004,93(1):163-171. |
| APA | Sun, XH,Liu, HJ,Li, G,Liao, X,&He, JS.(2004).Investigation on the cell nucleation and cell growth in microcellular foaming by means of temperature quenching.JOURNAL OF APPLIED POLYMER SCIENCE,93(1),163-171. |
| MLA | Sun, XH,et al."Investigation on the cell nucleation and cell growth in microcellular foaming by means of temperature quenching".JOURNAL OF APPLIED POLYMER SCIENCE 93.1(2004):163-171. |
入库方式： OAI收割
来源：化学研究所
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