Durability of nanolayer Ti-Al-O-N hard coatings under simulated polycarbonate melt processing conditions

2021 ◽  
Author(s):  
T. Broegelmann ◽  
Kirsten Bobzin ◽  
Guido Grundmeier ◽  
Teresa de los Arcos ◽  
N. C. Kruppe ◽  
...  
Keyword(s):  
Melt Processing ◽  
Hard Coatings ◽  
Processing Conditions

scholarly journals A Statistical Analysis on the Effect of Antioxidants on the Thermal-Oxidative Stability of Commercial Mass- and Emulsion-Polymerized ABS

Polymers ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 25 ◽  
Author(s):  
Rudinei Fiorio ◽  
Dagmar D’hooge ◽  
Kim Ragaert ◽  
Ludwig Cardon
Keyword(s):  
Statistical Analysis ◽  
Oxidative Stability ◽  
Synergetic Effect ◽  
Acrylonitrile Butadiene Styrene ◽  
Melt Processing ◽  
Processing Conditions ◽  
Melt Blending ◽  
Thermal Oxidative Stability ◽  
Industrial Context ◽  
Butadiene Styrene

In the present work, statistical analysis (16 processing conditions and 2 virgin unmodified samples) is performed to study the influence of antioxidants (AOs) during acrylonitrile-butadiene-styrene terpolymer (ABS) melt-blending (220 °C) on the degradation of the polybutadiene (PB) rich phase, the oxidation onset temperature (OOT), the oxidation peak temperature (OP), and the yellowing index (YI). Predictive equations are constructed, with a focus on three commercial AOs (two primary: Irganox 1076 and 245; and one secondary: Irgafos 168) and two commercial ABS types (mass- and emulsion-polymerized). Fourier transform infrared spectroscopy (FTIR) results indicate that the nitrile absorption peak at 2237 cm−1 is recommended as reference peak to identify chemical changes in the PB content. The melt processing of unmodified ABSs promotes a reduction in OOT and OP, and promotes an increase in the YI. ABS obtained by mass polymerization shows a higher thermal-oxidative stability. The addition of a primary AO increases the thermal-oxidative stability, whereas the secondary AO only increases OP. The addition of the two primary AOs has a synergetic effect resulting in higher OOT and OP values. Statistical analysis shows that OP data are influenced by all three AO types, but 0.2 m% of Irganox 1076 displays high potential in an industrial context.

Effect of melt processing conditions on the extent of exfoliation in organoclay-based nanocomposites

Polymer ◽  
2001 ◽  
Vol 42 (23) ◽  
pp. 9513-9522 ◽  
Author(s):  
H.R. Dennis ◽  
D.L. Hunter ◽  
D. Chang ◽  
S. Kim ◽  
J.L. White ◽  
...  
Keyword(s):  
Melt Processing ◽  
Processing Conditions

scholarly journals Effects of melt-processing conditions on the quality of poly(ethylene terephthalate) montmorillonite clay nanocomposites

2002 ◽  
Vol 40 (23) ◽  
pp. 2661-2666 ◽  
Author(s):  
Cher H. Davis ◽  
Lon J. Mathias ◽  
Jeffrey W. Gilman ◽  
David A. Schiraldi ◽  
J. Randy Shields ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Melt Processing ◽  
Montmorillonite Clay ◽  
Clay Nanocomposites ◽  
Processing Conditions ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

scholarly journals The Effect of SEBS/Halloysite Masterbatch Obtained in Different Extrusion Conditions on the Properties of Hybrid Polypropylene/Glass Fiber Composites for Auto Parts

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3560
Author(s):  
Zina Vuluga ◽  
Catalina-Gabriela Sanporean ◽  
Denis Mihaela Panaitescu ◽  
George Mihail Teodorescu ◽  
Mihai Cosmin Corobea ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Halloysite Nanotubes ◽  
Melt Processing ◽  
Processing Conditions ◽  
Twin Screw Extruders ◽  
Glass Fiber Composites ◽  
Twin Screw ◽  
Linear Poly ◽  
Lower Temperature

Masterbatches from a linear poly[styrene-b-(ethylene-co-butylene)-b-styrene] (SEBS) and halloysite nanotubes (HNT-QM) were obtained in different conditions of temperature and shear using two co-rotating twin-screw extruders. The influence of screw configuration and melt processing conditions on the morpho-structural, thermal and mechanical properties of masterbatches at macro and nanoscale was studied. A good dispersion of halloysite nanotubes and better thermal stability and tensile and nanomechanical properties were obtained at a lower temperature profile and higher screw speed. The effect of masterbatches, the best and worst alternatives, on the properties of a polypropylene (PP)–glass fiber (GF) composite was also evaluated. Double hardness, tensile strength and modulus and four times higher impact strength were obtained for PP/GF composites containing masterbatches compared to pristine PP. However, the masterbatch with the best properties led further to enhanced mechanical properties of the PP/GF composite. A clear difference between the effects of the two masterbatches was obtained by nanoindentation and nanoscratch tests. These analyses proved to be useful for the design of polymer composites for automotive parts, such as bumpers or door panels. This study demonstrated that setting-up the correct processing conditions is very important to obtain the desired properties for automotive applications.

Effect of low-molar-mass liquid crystal on the melt processing conditions of polycarbonate using single screw extruder

2009 ◽  
Vol 113 (2) ◽  
pp. 752-756 ◽  
Author(s):  
Supaluk Khunprasert ◽  
Supakanok Thongyai ◽  
Wannee Chinsirikul ◽  
Sirirat Wacharawichanant
Keyword(s):  
Liquid Crystal ◽  
Molar Mass ◽  
Melt Processing ◽  
Processing Conditions ◽  
Screw Extruder ◽  
Single Screw ◽  
Single Screw Extruder

Effects of melt processing conditions on photo-oxidation of PP/PPgMA/OMMT composites

2010 ◽  
Vol 95 (9) ◽  
pp. 1800-1809 ◽  
Author(s):  
S. Aslanzadeh ◽  
M. Haghighat Kish ◽  
A.A. Katbab
Keyword(s):  
Melt Processing ◽  
Processing Conditions ◽  
Photo Oxidation
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