Extrusion foaming behavior of a polypropylene/nanoclay microcellular foam

2016 ◽  
Vol 133 (41) ◽  
Author(s):  
Mingyi Wang ◽  
Linsheng Xie ◽  
Bo Qian ◽  
Yulu Ma ◽  
Nanqiao Zhou
Keyword(s):  
Microcellular Foam ◽  
Foaming Behavior ◽  
Extrusion Foaming

Excellent properties and extrusion foaming behavior of PPC/PS/PTFE composites with an in situ fibrillated PTFE nanofibrillar network

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 3176-3185 ◽  
Author(s):  
Xiang-Fang Peng ◽  
Kai-Can Li ◽  
Hao-Yang Mi ◽  
Xin Jing ◽  
Bin-Yi Chen
Keyword(s):  
Propylene Carbonate ◽  
Foaming Ability ◽  
Multiphase Composites ◽  
Foaming Behavior ◽  
Extrusion Foaming ◽  
Ptfe Composites ◽  
Poly Propylene

In this work, we compounded polystyrene (PS) and polytetrafluoroethylene (PTFE) with poly(propylene carbonate) (PPC) to prepare multiphase composites that possess special properties and to improve the extrusion foaming ability of PPC.

Extrusion Foaming Behavior of PBT Resins

2006 ◽  
Vol 42 (2) ◽  
pp. 165-176 ◽  
Author(s):  
B. Jeong ◽  
M. Xanthos ◽  
Y. Seo
Keyword(s):  
Foaming Behavior ◽  
Extrusion Foaming

Extrusion foaming behavior of wood plastic composites based on PP/POE blends

2019 ◽  
Vol 6 (11) ◽  
pp. 115345 ◽  
Author(s):  
Suwei Wang ◽  
Ping Xue ◽  
Mingyin Jia ◽  
Ke Chen
Keyword(s):  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Foaming Behavior ◽  
Extrusion Foaming

Study on Foaming Behavior of Microcellular PP/Inorganic Powder Composites

2011 ◽  
Vol 686 ◽  
pp. 454-460 ◽  
Author(s):  
Wei Gong ◽  
Chun Zhang ◽  
Jie Yu ◽  
Jian Hua Zhu ◽  
Li He
Keyword(s):  
Powder Material ◽  
Composite System ◽  
Nucleation Theory ◽  
Cell Diameter ◽  
Interfacial Behavior ◽  
Microcellular Foam ◽  
One Dimensional ◽  
Foaming Behavior ◽  
Powder Composites ◽  
Mica Composite

The modified inorganic powder material (one-dimensional MgSO4whisker, two-dimensional Mica, zero-dimensional SiO2) was added into polypropylene with 5% wt. The microcellular foam PP composite was prepared under the condition of twice-open mold. According to the principle of interfacial adhesion，Liquid-solid interface free energy of PP composite system was calculated by means of the contact angle. Based on heterogeneous nucleation theory, foaming behavior of microcellular foam material was characterized quantitatively by interfacial behavior. The effects of different inorganic powder material on foaming behavior were analyzed in microcellular foam polypropylene. The results indicated that the minimum nucleation energy barrier of PP/Mica composite system is 46.94N.mwith the nucleation rate in 5.53×1011. After foaming, the cell diameter of the composite is 22.1μm and the cell density is 6.92×108months/cm3.

Mechanical anisotropy of PS/CO2 microcellular foam sheet prepared by foaming extrusion

2016 ◽  
Vol 54 (1) ◽  
pp. 87-101 ◽  
Author(s):  
Joël Reignier ◽  
Richard Gendron
Keyword(s):  
Mechanical Behavior ◽  
Cell Walls ◽  
Shape Anisotropy ◽  
Mechanical Anisotropy ◽  
Preferential Orientation ◽  
Polystyrene Foam ◽  
Machine Direction ◽  
Microcellular Foam ◽  
Blowing Agent ◽  
Extrusion Foaming

Microcellular polystyrene foam sheets prepared by extrusion foaming with CO2 as the blowing agent were found to exhibit a significant anisotropy in mechanical behavior which could not be explained solely by the shape anisotropy of the cells and/or the preferential orientation of polystyrene molecules in the machine direction. Surprisingly, samples allowed to fully relax were still found to maintain part of their mechanical anisotropy, which was attributed to the weakness of the cell walls perpendicular to machine direction.

Effects of Nanoclay and CO2 Content on Foaming Behaviors of PP/PS Alloys

2014 ◽  
Vol 898 ◽  
pp. 107-110
Author(s):  
Ming Yi Wang ◽  
Ru Min Zhu ◽  
Nan Qiao Zhou ◽  
Chul B. Park
Keyword(s):  
Population Density ◽  
Cell Size ◽  
Cell Population ◽  
Foaming Agent ◽  
Foaming Process ◽  
Microcellular Foaming ◽  
Foaming Behavior ◽  
Extrusion Foaming

Microcellular foaming behavior of polypropylene/polystyrene (PP/PS) composites with or without the addition of nanoclay was compared in an extrusion foaming process by using supercritical CO2 as the foaming agent. The influence of CO2 content on foaming of the composites was investigated in the study. Our experiment results demonstrated that the introduction of nanoclay dramatically improved the foaming of the PP/PS blends with increased cell-population density and decreased cell size. With the increase of CO2 injected in the foaming process, cell-population density of the foam samples further increased.

Foaming behavior of microcellular foam polypropylene/modified nano calcium carbonate composites

2012 ◽  
Vol 128 (6) ◽  
pp. 3639-3651 ◽  
Author(s):  
Jie Ding ◽  
Junnan Shangguan ◽  
Weihua Ma ◽  
Qin Zhong
Keyword(s):  
Calcium Carbonate ◽  
Microcellular Foam ◽  
Foaming Behavior

scholarly journals Effect of Compatibility on the Foaming Behavior of Injection Molded Polypropylene and Polycarbonate Blend Parts

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 300 ◽  
Author(s):  
Bei Su ◽  
Ying-Guo Zhou ◽  
Bin-Bin Dong ◽  
Cao Yan
Keyword(s):  
Morphological Structure ◽  
Potential Method ◽  
Grafted Polymers ◽  
Dynamic Mechanical Analyzer ◽  
Blowing Agent ◽  
Cell Nucleation ◽  
Foaming Behavior ◽  
Thermal Features ◽  
Injection Molded ◽  
Scanning Electron

To improve the foaming behavior of a common linear polypropylene (PP) resin, polycarbonate (PC) was blended with PP, and three different grafted polymers were used as the compatibilizers. The solid and foamed samples of the PP/PC 3:1 blend with different compatibilizers were first fabricated by melt extrusion followed by injection molding (IM) with and without a blowing agent. The mechanical properties, thermal features, morphological structure, and relative rheological characterizations of these samples were studied using a tensile test, dynamic mechanical analyzer (DMA), scanning electron microscope (SEM), and torque rheometer. It can be found from the experimental results that the influence of the compatibility between the PP and PC phases on the foaming behavior of PP/PC blends is substantial. The results suggest that PC coupling with an appropriate compatibilizer is a potential method to improve the foamability of PP resin. The comprehensive effect of PC and a suitable compatibilizer on the foamability of PP can be attributed to two possible mechanisms, i.e., the partial compatibility between phases that facilitates cell nucleation and the improved gas-melt viscosity that helps to form a fine foaming structure.

Sign in / Sign up

Export Citation Format

Share Document