Use of the Taguchi Method for Optimization of Poly (Butylene Terephthalate) and Poly (Trimethylene Terephthalate) Blends through Injection Molding

Zaverl, Matthew; Misra, Manjusri; Mohanty, Amar K.

doi:10.3139/217.2714

Cited by 12 publications

(9 citation statements)

References 24 publications

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“…[7][8][9][10][11] As a s e m i -c r y s t a l l i n e p o l y m e r , p o l y ( b u t y l e n e terephthalate) (PBT) has been widely used due to its advantages of certain rigidity, high crystallization rate, fatigue resistance, heat resistance and solvent resistance. [12][13][14] However, PBT has the disadvantage of insufficient toughness, especially the notched impact strength is not enough, and is limited in some applications. In order to improve its toughness, more attention has been paid in recent years.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ethylene–Butylacrylate–Glycidyl Methacrylate on Compatibility Properties of Poly (butylene terephthalate)/ Thermoplastic Polyurethane Blends

Zou¹,

Huang²,

Zeng³

et al. 2020

ES Energy Environ.

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Different proportions of poly (butylene terephthalate) (PBT)/thermoplastic polyurethane (TPU)/poly (ethylene-butylacrylate-glycidyl methacrylate) (PTW) blends were prepared by extrusion and injection molding. In this study, the PTW effect on compatibility properties of PBT/TPU blends was investigated from morphology, mechanical and thermal properties of the blends. Infrared spectroscopy indicated that there were reactions between the hydroxyl or carboxyl groups in PBT and a small portion of the epoxy groups in PTW during melt blending, and these reactions benefitted PTW and PBT to form grafted structures, which were conducive to viscosity increase and affected the crystallization of the blend. The morphological images obtained by scanning electron microscopy showed that in the PBT/TPU/PTW blend, the TPU particles, as the dispersed phase, were well distributed, and the phase interface between TPU and PBT became less and less obvious as the PTW content increased. It was proved that the melting point (Tm) and the crystallization temperature (Tc) of the blend decreased with the PTW content increase by the differential scanning calorimetry. It was shown by the dynamic mechanical thermal analysis spectra that the compatibility of PBT/TPU blends was enhanced by the addition of PTW. Mechanical property measurements indicated that PTW could result in a significant increase in impact strength by about 315%, while the flexural and tensile strength of PBT/TPU blends were decreased slightly.

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Section: Introductionmentioning

confidence: 99%

Effect of Ethylene–Butylacrylate–Glycidyl Methacrylate on Compatibility Properties of Poly (butylene terephthalate)/ Thermoplastic Polyurethane Blends

Zou¹,

Huang²,

Zeng³

et al. 2020

ES Energy Environ.

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“…Polymer blending is one of the major techniques which can overcome these limitations. Through polymer blending it is possible to develop new and novel materials with attractive properties . There are several studies which have reported substantial improvement in mechanical, thermal, and barrier properties in blends compared to their individual polymers.…”

Section: Introductionmentioning

confidence: 99%

Selective Localization of MWCNT in Poly (Trimethylene Terephthalate)/Poly Ethylene Blends: Theoretical Analysis, Morphology, and Mechanical Properties

Kunjappan

Ramachandran

Padmanabhan

et al. 2018

Macromolecular Symposia

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Theoretical analysis is carried out to predict the nature of selective localization of multi‐walled carbon nanotubes (MWCNTs) in poly(trimethylene terephthalate/polyethylene (PTT/PE) blends. In agreement with theoretical data experimental results clearly indicate that MWCNT prefers to get associated with PTT phase than with PE. Molecular interactions responsible for such selective localization of MWCNT to PTT component can be attributed to mutual and collective π–π interactions possible between the aromatic moieties present in PTT and MWCNT. In addition, the reinforcing effect of MWCNT in the PTT/PE system was determined using tensile analysis and the morphological features of blends and blend nanocomposites are studied using scanning electron microscope (SEM). Compared to the PTT/PE blend system MWCNT incorporated blend nanocomposites show better mechanical properties. The elongation at break of the blend system is seen to rise with increasing amount of PE content. Among various blend nanocomposites, we have investigated the nanocomposites with higher PTT content show higher tensile strength and Young's modulus. The blend nanocomposite with 90/10/1 composition shows 12% increment in Young's modulus and as much as 80% increment in tensile strength compared to 90/10 blend system which signifies the role MWCNT plays in the blend system.

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“…where y i is the OPD, LCD, or gray relational grade (see Section 3.3); y is the mean of y i , and n is the number of measured points in each trial. [29][30][31]…”

Section: Taguchi Optimization Analysismentioning

confidence: 99%

“…The aim of the Taguchi analyses was to minimize the OPD and LCD properties of the de‐molded PLA. Thus, for each optimization objective (i.e., OPD or LCD), the quality of the experimental outcome for each run in the Taguchi OA was evaluated using the following larger‐the‐better signal‐to‐noise ratio (S/N) characteristic:

S / N = - 10 \log ({\overset{y}{true}}^{2} + S_{n}^{2}),

S_{n} = \sqrt{\frac{\sum_{i = 1}^{n} {(y_{i} - \overset{true¯}{y})}^{2}}{n}},

where

y_{i}

is the OPD, LCD, or gray relational grade (see Section 3.3);

\overset{true¯}{normaly}

is the mean of

y_{i}

, and n is the number of measured points in each trial 29–31 …”

Section: Simulation Analysis Optimization Framework and Verification ...mentioning

confidence: 99%

Injection‐compression molding process on optical quality optimization of plastic lens array

Lin,

Lin

2023

Polymers for Advanced Techs

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Plastic lens arrays (PLAs) have the advantages of a light weight and a compact size. However, their optical performance is often degraded by warpage, caused by the accumulation of residual stress during the injection molding process. Accordingly, the present study employs mold flow analysis simulations and a Taguchi‐Gray relational analysis (GRA) framework to optimize the processing parameters of the injection compression molding (ICM) process. The analyses focus specifically on the effects of the mold temperature, melt temperature, injection velocity, packing pressure, packing time, and compression gap on the optical path difference (OPD) and lens center displacement (LCD) of the fabricated lens array. The results confirm that the optimized processing parameters significantly improve the OPD, LCD, birefringence, and imaging properties of the PLA compared to those of a PLA fabricated using standard molding conditions.

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Use of the Taguchi Method for Optimization of Poly (Butylene Terephthalate) and Poly (Trimethylene Terephthalate) Blends through Injection Molding

Cited by 12 publications

References 24 publications

Effect of Ethylene–Butylacrylate–Glycidyl Methacrylate on Compatibility Properties of Poly (butylene terephthalate)/ Thermoplastic Polyurethane Blends

Effect of Ethylene–Butylacrylate–Glycidyl Methacrylate on Compatibility Properties of Poly (butylene terephthalate)/ Thermoplastic Polyurethane Blends

Selective Localization of MWCNT in Poly (Trimethylene Terephthalate)/Poly Ethylene Blends: Theoretical Analysis, Morphology, and Mechanical Properties

Injection‐compression molding process on optical quality optimization of plastic lens array

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