Polystyrene Foam with High Cell Density and Small Cell Size by Compression-Injection Molding and Core Back Foaming Technique: Evolution of Cells in Cavity

2018 ◽  
Vol 303 (9) ◽  
pp. 1800110 ◽  
Author(s):  
Tiantian Bai ◽  
Binbin Dong ◽  
Mengjun Xiao ◽  
Hu Liu ◽  
Ning Wang ◽  
...  
Keyword(s):  
Injection Molding ◽  
Cell Size ◽  
Cell Density ◽  
High Cell Density ◽  
Small Cell ◽  
High Cell ◽  
Polystyrene Foam ◽  
Small Cell Size

Design for Noise Reduction of the Interior of Building Using Microcellular Foamed Plastics

2012 ◽  
Vol 184-185 ◽  
pp. 936-939
Author(s):  
Hak Bin Kim ◽  
Earl Han ◽  
Sung Woon Cha
Keyword(s):  
Noise Suppression ◽  
High Cell Density ◽  
High Strength ◽  
Small Cell ◽  
Building Industry ◽  
Material Strength ◽  
Low Density ◽  
High Cell ◽  
Small Cell Size ◽  
Foamed Plastics

The microcellular foamed plastics (MCPs) have high material strength, a relatively small cell size, and a high cell density in comparison with conventional foamed plastics. In particular, the small size of cell in MCPs makes many applications possible in a range of fields. Its high reflectivity enables its application as a reflector that is a part of the back light unit in the LED industry. Thanks to its low density and high strength, MCPs can be used as diaphragm in speakers. They also have many other uses. MCPs show a noise suppression property which allows them to be used in the building industry. A soundproofing plate made of MCPs exhibits a better soundproofing property in comparison with a soundproofing plate made of ordinary plastic. In this study, the author manufactured a soundproofing plate using microcellular foamed polypropylene (PP) and assessed the properties of the absorbing and proofing sound. As a result, the findings showed the possibility of using MCPs as a soundproofing plate in the building industry.

Effect of Formula on Microcellular Unsaturated Polyester

2013 ◽  
Vol 634-638 ◽  
pp. 950-954
Author(s):  
Xue Ni Zhao ◽  
Peipei Zhai ◽  
Jianpeng He ◽  
Wei Ren
Keyword(s):  
Cell Size ◽  
Cell Density ◽  
High Cell Density ◽  
Unsaturated Polyester ◽  
Curing Agent ◽  
Average Cell Size ◽  
Average Cell ◽  
Small Cell Size ◽  
Strong Compression ◽  
Styrene Content

Formula for microcellular unsaturated polyester using chemical foaming method was studied. With the increase of NaHCO3 content, the cell size of microcellular unsaturated polyester slightly decreased with the increase of styrene content in the range of 1-2 %. The cell size increased in the range of 2-4 %. With the increase of curing agent content, the cell size increased in the range of 0.5-0.9 % and decreased in the range of 0.9-1.3 %. The cell size decreased with the increase of styrene content in the range of 30-40 %. The cell size had little variation when styrene content was in the range of 40-50 %. The average cell size and cell density of microcellular unsaturated polyester were strongly affected by accelerant content. The cell size decreased with the increase of accelerant content. The opposite was for the cell density. The microcellular unsaturated polyester prepared at 2% NaHCO3, 0.3% accelerantt, 0.9% curing agent, 40% styrene had the small cell size, high cell density, and strong compression strength.

High cell density cultivation of anchorage-dependent cells using a novel macroporous cellulosic support

1992 ◽  
Vol 74 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Tatsuya Ogawa ◽  
Masamichi Kamihira ◽  
Shuji Terashima ◽  
Kimiaki Yasuda ◽  
Shinji Iijima ◽  
...  
Keyword(s):  
Cell Density ◽  
High Cell Density ◽  
High Cell ◽  
High Cell Density Cultivation
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