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Crystallinity Change And Reduced Warpages On Thin Walled Parts-the Effect Of Nano Fumed Silica On Polyacetal

S. Saravanan, C. Kailasanathan, Elango Natarajan, Anbarasan Ramasamy
Published 2020 · Materials Science

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Polyacetal is widely used in thin walled injection moulding due to its high mechanical properties. But, its widespread application is limited due to volumetric shrinkage and warpage. The investigations on reducing warpage on Polyacetal is attempted by incorporating nano fumed silica of 1 wt% to 5 wt% as a nucleating agent. The crystallinity study shows that the crystallization rate is increased with the addition of fumed silica up to 4 wt%, beyond which it is reduced. The increased warpage and tensile strength are observed with increase in crystallinity. The tensile strength of PA/5 wt% FS nanocomposite is 1.79% lesser than PA/4 wt% FS nanocomposite, but still 2.5% higher than neat PA. The effect of the filler on surface roughness and optical properties such as haze and gloss are also studied. The micro voids are steadily increased as filler loading increases. Hence, the surface roughness increases uniformly upon increase of filler and it does not depend on crystallinity but depends on growth of micro voids. Furthermore, the microscopic analysis is carried out through FTIR, XRD and SEM and discussed. It is concluded from the above analysis that 5 wt% of FS loading into PA reduces warpage of the thin walled parts with a gain of mechanical strength than neat PA.
This paper references
Infra red study on the conforma- tional regularity in needle-like and other Polyoxymethylene
M Shimomura (1982)
10.1016/0032-3861(82)90090-8
Infra-red study on the conformational regularity in needle-like and other polyoxymethylene crystals
Masaki Shimomura (1982)
10.1007/s10965-019-1869-3
Numerical simulation on crystallization-induced warpage of injection-molded PP/EPDM part
X. Li (2019)
10.2320/MATERTRANS.45.1027
Experimental relationships between surface roughness, glossiness and color of chromatic colored metals
M. Yonehara (2004)
10.1007/S00170-010-3106-4
Warpage phenomenon of thin-wall injection molding
Y. Chiang (2011)
10.1002/POL.1963.100010510
Structure of the normal crystal form of polyoxymethylene
G. Carazzolo (1963)
10.1002/PEN.20377
Nucleation effect of polyamide on polyoxymethylene
Y. Hu (2005)
10.1002/PEN.21322
Warpage–crystallinity relations in rotational molding of polypropylene
T. Glomsaker (2009)
10.1007/s10965-011-9775-3
The influence of molecular weight on the properties of polyacetal/hydroxyapatite nanocomposites. Part 1. Microstructural analysis and phase transition studies
K. Pielichowska (2012)
10.1016/J.MATDES.2017.12.048
Thin-wall injection molding of polystyrene parts with coated and uncoated cavities
Davide Masato (2018)
A (2019) An analysis of me- chanical and viscoelastic behaviour of nano-SiO2 dispersed epoxy composites. Silicon 12:2465–2477
SK Singh (2019)
10.1002/PEN.20083
Optimal process conditions of shrinkage and warpage of thin‐wall parts
S. J. Liao (2004)
10.1002/APP.44625
The morphology evolution and crystallization behavior of microinjection molded polyoxymethylene/molybdenum disulfide nanocomposite
Sen Yang (2017)
10.1016/J.EURPOLYMJ.2006.01.012
Effects of surface modification of fumed silica on interfacial structures and mechanical properties of poly(vinyl chloride) composites
S. Sun (2006)
10.1002/PEN.760351505
Experimental and theoretical studies of shrinkage, warpage, and sink marks of crystalline polymer injection molded parts
R. Chang (1995)
10.1002/APP.27577
Effects of fumed silica on the crystallization behavior and thermal properties of poly(hydroxybutyrate‐co‐hydroxyvalerate)
P. Ma (2008)
NK (2020) A thermoplastic polyurethane /nanosilica composite via melt mixing process and its properties. Silicon
C Saha (2020)
10.1007/978-981-13-2718-6_7
Numerical Investigation of the Behaviour of Thin-Walled Metal Tubes Under Axial Impact
L. P. J. Lal (2019)
10.1007/s12633-019-00335-x
An Analysis of Mechanical and Viscoelastic Behaviour of Nano-SiO2 Dispersed Epoxy Composites
S. K. Singh (2019)
10.1016/0032-3861(88)90346-1
Vibrational spectroscopic study on trigonal polyoxymethylene and polyoxymethylene-d2 crystals
Masaki Shimomura (1988)
10.1016/J.POLYMER.2011.07.041
Fumed silica filled poly(dimethylsiloxane-urea) segmented copolymers: Preparation and properties
E. Yilgor (2011)
Pegoretti A (2017) Effects of Fumed silica and draw ratio on Nano composite polypropylene fibers
L Fambri (2004)
10.1177/0892705712443251
The effect of CF and nano-SiO2 modification on the flexural and tribological properties of POM composites
Xu Zhao-hong (2014)
10.1002/PI.2057
Morphology control of polyoxy‐methylene/thermoplastic polyurethane blends by adjusting their viscosity ratio
Z. Cheng (2006)
10.1002/pol.20200001
Synergistic effect of thermoplastic phenolic resin and multiwalled carbon nanotubes on the crystallization of polyoxymethylene
M. Xue (2020)
10.1016/J.ICHEATMASSTRANSFER.2014.12.008
Warpage control of thin-walled injection molding using local mold temperatures ☆
Shih-Chih Nian (2015)
Structure and mechanical properties of polyoxymethylene/multi-walled carbon nano tube composites
X Zhao (2011)
10.1002/PEN.24489
Toughened polyoxymethylene by polyolefin elastomer and glycidyl methacrylate grafted high density polyethylene
Wenqing Yang (2017)
10.1177/8756087905057247
Surface Haze and Surface Morphology of Blown Film Compositions
R. Patel (2005)
10.1002/9781118914458
Polyoxymethylene Handbook: Structure, Properties, Applications and their Nanocomposites
S. Lüftl (2014)
10.1002/APP.30425
Nucleating polymer crystallization with poly(tetrafluoroethylene) nanofibrils
K. Bernland (2009)
10.1007/978-81-322-1871-5
Innovative Design, Analysis and Development Practices in Aerospace and Automotive Engineering
R. Bajpai (2014)
10.1002/POL.1960.1204414325
Molecular configuration of polyoxymethylene
H. Tadokoro (1960)
10.1111/J.1460-2695.1997.TB00324.X
FATIGUE AND FRACTURE IN POLYACETAL RESINS
A. Lazzeri (1997)
Experimental and theoretical studies of shrinkage, warpage, and sink marks of crystalline polymer injec- tion molded parts
RY Chang (1995)
10.24247/IJMPERDAUG201880
Multi Wall Carbon Nanotube Reinforced Silicone for Aerospace Applications
A. Golshahr (2018)
10.1007/s12633-020-00487-1
A Thermoplastic Polyurethane /Nanosilica Composite via Melt Mixing Process and its Properties
C. Saha (2020)
10.1007/s10965-020-2012-1
Effects of sepiolite on crystallization behaviors and properties of sepiolite/polyoxymethylene composites
Aijuan Sun (2020)
Flow-induced crystal- lization of high-density polyethylene: the effects of shear and uni- axial extension
M Derakhshandeh (2012)
10.1016/S0040-6031(02)00186-7
Segmental dynamics in poly(oxymethylene) as studied via combined differential scanning calorimetry/creep rate spectroscopy approach
V. Bershtein (2002)
10.1007/978-3-540-49076-0_3
PREPARATION AND PROPERTIES
M. Flegel (1975)
10.5937/ZASMAT1504457J
High gloss finish: The impact of surface roughness on gloss
M. Jaić (2015)
10.3389/fmats.2015.00023
In situ Observation of Nucleated Polymer Crystallization in Polyoxymethylene Sandwich Composites
M. Šlouf (2015)
Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations
10.1002/APP.10203
Impact modification of polyacetal by thermoplastic elastomer polyurethane
M. Mehrabzadeh (2002)
10.1155/2017/6193961
The Effect of High Loaded Multiwall Carbon Nanotubes in Natural Rubber and Their Nonlinear Material Constants
N. Elango (2017)
Fatigue fracture engineer- ing
A Lazzeri (1997)
The effects of surface roughness on low haze ultrathin nano composite films
V Kanniah (2013)
10.3390/polym9020041
Effects of Fumed Silica and Draw Ratio on Nanocomposite Polypropylene Fibers
L. Fambri (2017)
10.1016/J.TSF.2013.04.126
The effects of surface roughness on low haze ultrathin nanocomposite films
Vinod Kanniah (2013)
Fatigue fracture engineer
J KingaPielichowska (2012)
10.1002/PEN.10887
Crystallization characteristics of polyoxymethylene with attapulgite as nucleating agent
W. Xu (2001)
10.1177/0892705714556828
The mechanical properties of carbon fiber-reinforced polyoxymethylene composites filled with silaned nano-SiO2
G. Tang (2016)
10.1177/1477760619855078
Prediction of surface quality and optimization of process parameters in drilling of Delrin using neural network
V. Kaviarasan (2019)
10.1016/J.POLYMERTESTING.2016.11.033
The rheological and crystallization behavior of polyoxymethylene
F. D. Santis (2017)
10.1155/2014/782618
Studies on Mechanical, Thermal, and Morphological Properties of Glass Fibre Reinforced Polyoxymethylene Nanocomposite
K. M. Babu (2014)
10.1007/s00397-011-0605-7
Flow-induced crystallization of high-density polyethylene: the effects of shear and uniaxial extension
Maziar Derakhshandeh (2011)
10.1016/J.POLYMDEGRADSTAB.2007.02.024
Property changes in polyoxymethylene (POM) resulting from processing, ageing and recycling
Vasiliki-Maria Archodoulaki (2007)
10.1002/PC.23496
Rheological and dynamic mechanical characteristics of rotationally moldable linear low‐density polyethylene fumed silica nanocomposites
V. GirishChandran (2016)
10.1109/ACCESS.2018.2869040
Enhanced Multi-Objective Teaching-Learning-Based Optimization for Machining of Delrin
E. Natarajan (2018)
10.1080/03602559.2015.1132466
Review on the Effects of Process Parameters on Strength, Shrinkage, and Warpage of Injection Molding Plastic Component
M. Mohan (2017)
10.1016/J.COMPOSITESB.2011.01.002
Structure and mechanical properties of polyoxymethylene/multi-walled carbon nanotube composites
X. Zhao (2011)
High-gloss coatings - the effect of surface roughness on gloss
J Milan (2015)
The morphology evolu- tion and crystallization behavior of microinjection molded polyoxymethylene/molybdenum disulfide nano composite
S Yang (2017)



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