Microstructure and Properties of Microcellular Poly (phenylene sulfide) Foams by Mucell Injection Molding

A series of microcellular poly (phenylene sulfide) (PPS) foams were prepared by Mucell injection molding. The cell structure, mechanical properties, crystallization behavior and dielectric property of microcellular PPS foams were systemically investigated. The results showed that the longer the length of flow passage of injection mold, the larger cell size of microcellular PPS foams. The injection parameter of shot size played an important role in relative density of microcellular PPS foams. When the relative density of microcellular PPS foam reached to 0.658, the tensile strength, flexural strength and impact strength of PPS foam materials achieved 10.82 MPa, 52.99 MPa and 0.305 J/cm2, respectively. Meanwhile, with the relative density decreasing, the dielectric constant of PPS foam materials reduced, while the volume resistivity of its uprated.

[1]  Shyh-Shin Hwang,et al.  Shrinkage study of textile roller molded by conventional/microcellular injection-molding process☆ , 2008 .

[2]  L. Gibson,et al.  Uniaxial strength asymmetry in cellular materials: An analytical model , 1998 .

[3]  Andrzej K. Bledzki,et al.  Injection moulded microcellular wood fibre-polypropylene composites , 2006 .

[4]  Matthias Wessling,et al.  Microcellular Foaming of Amorphous High-Tg Polymers Using Carbon Dioxyde , 2001 .

[5]  J. Seo,et al.  Bubble Nucleation and Growth in Microcellular Injection Molding Processes , 2008 .

[6]  L. Turng,et al.  Microcellular injection-molding of polylactide with chain-extender , 2009 .

[7]  N. Suh,et al.  The viscoelastic behavior of microcellular plastics with varying cell size , 1995 .

[8]  K. Shakesheff,et al.  Characterisation of microcellular foams produced from semi-crystalline PCL using supercritical carbon dioxide , 2006 .

[9]  G. Caneba,et al.  Extrusion with Carbon Dioxide (CO2) and Characterization of ABS/Mg (OH)2/Nanoclay Composites , 2012 .

[10]  J. Seo,et al.  Effects of Repeated Microcellular Foaming Process on Cell Morphology and Foaming Ratio of Microcellular Plastics , 2011 .

[11]  J. Colton.  THE NUCLEATION OF MICROCELLULAR FOAMS IN SEMI CRYSTALLINE THERMOPLASTICS , 1989 .

[12]  L. Turng,et al.  The Microcellular Injection Molding of Low-Density Polyethylene (LDPE) Composites , 2010 .

[13]  L. Turng,et al.  Study of injection molded microcellular polyamide-6 nanocomposites , 2004 .

[14]  S. Yamasaki,et al.  Polyethylene ionomer-based nano-composite foams prepared by a batch process and MuCell® injection molding , 2010 .

[15]  Chul B. Park,et al.  Effect of the crystallinity and morphology on the microcellular foam structure of semicrystalline polymers , 1996 .

[16]  Zhongyuan Lu,et al.  Investigation on the crystallization behavior of poly(ether ether ketone)/poly(phenylene sulfide) blends , 2008 .

[17]  Chul B. Park,et al.  A microcellular processing study of poly(ethylene terephthalate) in the amorphous and semicrystalline states. Part I: Microcell nucleation , 1996 .

[18]  Zhongyuan Lu,et al.  Non-Isothermal Crystallization of High-Impact Polystyrene/Poly(Phenylene Sulfide) Blends , 2008 .

[19]  Chul B. Park,et al.  A microcellular processing study of poly(ethylene terephthalate) in the amorphous and semicrystalline states. Part II: Cell growth and process design , 1996 .

[20]  S. Chen,et al.  Using thermally insulated polymer film for mold temperature control to improve surface quality of microcellular injection molded parts , 2008 .

[21]  Jonathan S. Colton,et al.  The nucleation of microcellular thermoplastic foam with additives: Part I: Theoretical considerations , 1987 .

[22]  Zhongyuan Lu,et al.  Investigation on the Isothermal Crystallization of Poly(phenlene sulfide) by Rheology and Polarized Light Microscopy , 2008 .

[23]  Bao-ku Zhu,et al.  Polyimide foams with ultralow dielectric constants , 2006 .

[24]  N. Suh,et al.  A process for making microcellular thermoplastic parts , 1990 .

[25]  Mingjun Yuan,et al.  Microstructure and mechanical properties of microcellular injection molded polyamide-6 nanocomposites , 2005 .

[26]  Biqin Wang,et al.  Microcellular thin PET sheet foam preparation by compression molding , 2004 .

[27]  J. Yeh,et al.  Effect of organoclay on the mechanical/thermal properties of microcellular injection molded PBT–clay nanocomposites , 2009 .

[28]  Vipin Kumar,et al.  Microcellular and nanocellular solid-state polyetherimide (PEI) foams using sub-critical carbon dioxide II. Tensile and impact properties , 2011 .