会议论文详细信息
International Research and Innovation Summit 2017
Experimental validation on the effect of material geometries and processing methodology of Polyoxymethylene (POM)
Hafizzal, Y.^1 ; Nurulhuda, A.^2 ; Izman, S.^1 ; Khadir, A.Z.A.^1
Departments of Mechanical Engineering, Universiti Teknologi Malaysia, UTM Skudai, Johor
81310, Malaysia^1
Quality Engineering Department, Universiti Kuala Lumpur (UniKL), Malaysian Institute of Industrial Technology, Persiaran Sinaran Ilmu, Bandar Seri Alam, Johor
81750, Malaysia^2
关键词: Chemical compositions;    Decomposition temperature;    Experimental validations;    Material integrity;    Polymer chain length;    Thermal properties of materials;    Thermo-mechanical degradation;    Volatile organic compound (VOC);   
Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/226/1/012158/pdf
DOI  :  10.1088/1757-899X/226/1/012158
来源: IOP
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【 摘 要 】

POM-copolymer bond breaking leads to change depending with respect to processing methodology and material geometries. This paper present the oversights effect on the material integrity due to different geometries and processing methodology. Thermo-analytical methods with reference were used to examine the degradation of thermomechanical while Thermogravimetric Analysis (TGA) was used to judge the thermal stability of sample from its major decomposition temperature. Differential Scanning Calorimetry (DSC) investigation performed to identify the thermal behaviour and thermal properties of materials. The result shown that plastic gear geometries with injection molding at higher tonnage machine more stable thermally rather than resin geometries. Injection plastic gear geometries at low tonnage machine faced major decomposition temperatures at 313.61°C, 305.76 °C and 307.91 °C while higher tonnage processing method are fully decomposed at 890°C, significantly higher compared to low tonnage condition and resin geometries specimen at 398°C. Chemical composition of plastic gear geometries with injection molding at higher and lower tonnage are compare based on their moisture and Volatile Organic Compound (VOC) content, polymeric material content and the absence of filler. Results of higher moisture and Volatile Organic Compound (VOC) content are report in resin geometries (0.120%) compared to higher tonnage of injection plastic gear geometries which is 1.264%. The higher tonnage of injection plastic gear geometry are less sensitive to thermo-mechanical degradation due to polymer chain length and molecular weight of material properties such as tensile strength, flexural strength, fatigue strength and creep resistance.

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