Heterogeneous dispersion of the compatibilizer in the injection molding of polyamide 6/polypropylene blends

2009 ◽  
Vol 113 (1) ◽  
pp. 299-305 ◽  
Author(s):  
Wei Yang ◽  
Xue-Gang Tang ◽  
Bang-Hu Xie ◽  
Yong-Ping Zhu ◽  
Ming-Bo Yang ◽  
...  
Keyword(s):  
Injection Molding ◽  
Polyamide 6 ◽  
Polypropylene Blends

Effects of molding on property of thermally conductive and electrically insulating polyamide 6–based composite

2018 ◽  
Vol 32 (9) ◽  
pp. 1190-1203 ◽  
Author(s):  
Xuping Yang ◽  
Wenbin Yang ◽  
Jinghui Fan ◽  
Juying Wu ◽  
Kai Zhang
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Injection Molding ◽  
Annealing Time ◽  
Polyamide 6 ◽  
Molding Pressure ◽  
Hot Press ◽  
Molding Method ◽  
Thermally Conductive ◽  
Press Molding

Thermally conductive and electrically insulating polyamide 6 (PA6) matrix quaternary composites were prepared by hot press molding and injection molding, respectively. The quaternary composites were composed of zero-dimensional aluminum oxide particle, one-dimensional silicon carbide whisker, two-dimensional flake graphite, and PA6 resin matrix. Morphology, structure, density, thermal conductivity, volume electrical resistivity, and tensile strength of two types of composites were characterized by scanning electron microscopy, X-ray diffractometer, thermal conductivity tester, high resistance micro-current tester, and tensile tester. The results showed that crystallinity, thermal conductivity, density, and tensile strength of hot press molding samples were superior to those of samples made by injection molding method. This is due to that hot press molding method can provide higher molding pressure and longer annealing time than injection molding. The mechanism could be explained that the performances of the composites were promoted by increasing molding pressure and annealing time.

Investigation the Ultrasonic Injection Molding of Polyamide 6

2021 ◽  
pp. 41-48
Author(s):  
Thanh-Hai Nguyen ◽  
Tran Long Vu ◽  
Vo Van Duy Phong ◽  
Tra Ngoc Tien Dat ◽  
Anh Van Nguyen ◽  
...  
Keyword(s):  
Injection Molding ◽  
Polyamide 6

Anisotropic multilayer conductive networks in carbon nanotubes filled polyethylene/polypropylene blends obtained through high speed thin wall injection molding

Polymer ◽  
2013 ◽  
Vol 54 (23) ◽  
pp. 6425-6436 ◽  
Author(s):  
Feilong Yu ◽  
Hua Deng ◽  
Qin Zhang ◽  
Ke Wang ◽  
Chaoliang Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Injection Molding ◽  
High Speed ◽  
Thin Wall ◽  
Wall Injection ◽  
Polypropylene Blends

Visualization of particles arrangement during filling stage of polyamide 6 - metal insert injection molding

2019 ◽  
Vol 59 (s2) ◽  
pp. E271-E278 ◽  
Author(s):  
Karol Bula ◽  
Justyna Szymańska ◽  
Tomasz Sterzyński ◽  
Adam Piasecki ◽  
Roman Wróblewski
Keyword(s):  
Injection Molding ◽  
Polyamide 6 ◽  
Metal Insert ◽  
Filling Stage

Alternating multilayer structure of polyethylene/polypropylene blends obtained through injection molding

2011 ◽  
pp. n/a-n/a ◽  
Author(s):  
Kun Jiang ◽  
Feilong Yu ◽  
Hongwei Bai ◽  
Jian Gao ◽  
Hua Deng ◽  
...  
Keyword(s):  
Injection Molding ◽  
Multilayer Structure ◽  
Polypropylene Blends

scholarly journals Vibration and Sound Response of Glass-Fiber-Reinforced Polyamide 6 Using Microcellular-Foaming-Process-Applied Injection Molding Process

Polymers ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 173
Author(s):  
Hyun Keun Kim ◽  
Jaehoo Kim ◽  
Donghwi Kim ◽  
Youngjae Ryu ◽  
Sung Woon Cha
Keyword(s):  
Injection Molding ◽  
Glass Fiber ◽  
Natural Frequency ◽  
Damping Ratio ◽  
Polyamide 6 ◽  
Injection Molding Process ◽  
Molding Process ◽  
Response Characteristics ◽  
Foaming Process ◽  
Microcellular Foaming

In this study, the vibration and sound response characteristics of composites produced via injection molding applied with a microcellular foaming process (MCPs) were improved. The study was conducted using PA6 and glass fiber composites, which are representative thermoplastic engineering plastics. Two types of specimens were used: a plate specimen to confirm the basic sound and vibration characteristics, and a large roof-rack specimen from an actual vehicle with a complex shape. The frequency response function curve was calculated by conducting an impact test, and natural frequency and damping ratio were measured based on the curve. The results confirmed that, in the case of a specimen manufactured through the injection molding process to which MCPs were applied, the natural frequency was lowered, and the damping ratio decreased. The degree of change in the natural frequency and damping ratio was confirmed. To determine the cause of the change in the natural frequency and damping ratio, the mode shape at the natural frequency of each specimen was measured and the relationship was confirmed by measuring the density and the elastic modulus of the composite. In addition, the usability of the specimens to which MCPs were applied was verified by conducting impact strength and tensile strength tests.

Polyamide 6 (PA6) /polyethylene terephthalate (PET) blends with gradient and encapsulation structure developed by injection molding

Polymer ◽  
2019 ◽  
Vol 180 ◽  
pp. 121679 ◽  
Author(s):  
Yan Yan ◽  
Yan-Hao Huang ◽  
Yue Wang ◽  
Zhi-Chao Xiao ◽  
Ming-Bo Yang
Keyword(s):  
Injection Molding ◽  
Polyethylene Terephthalate ◽  
Polyamide 6

scholarly journals Effect of the Compounding Conditions of Polyamide 6, Carbon Fiber, and Al2O3 on the Mechanical and Thermal Properties of the Composite Polymer

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3047 ◽  
Author(s):  
Young Shin Kim ◽  
Jae Kyung Kim ◽  
Euy Sik Jeon
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Injection Molding ◽  
Mechanical Strength ◽  
Melt Flow Index ◽  
Polyamide 6 ◽  
Extrusion Process ◽  
Flow Index ◽  
Process Conditions ◽  
Mechanical And Thermal Properties

Among the composite manufacturing methods, injection molding has higher time efficiency and improved processability. The production of composites via injection molding requires a pre-process to mix and pelletize the matrix polymer and reinforcement material. Herein, we studied the effect of extrusion process conditions for making pellets on the mechanical and thermal properties provided by injection molding. Polyamide 6 (PA6) was used as the base, and composites were produced by blending carbon fibers and Al2O3 as the filler. To determine the optimum blending ratio, the mechanical properties, thermal conductivity, and melt flow index (MI) were measured at various blending ratios. With this optimum blending ratio, pellets were produced by changing the temperature and RPM conditions, which are major process variables during compounding. Samples were fabricated by applying the same injection conditions, and the mechanical strength, MI values, and thermal properties were measured. The mechanical strength increased slightly as the temperature and RPM increased, and the MI and thermal conductivity also increased. The results of this study can be used as a basis for specifying the conditions of the mixing and compounding process such that the desired mechanical and thermal properties are obtained.

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