Mechanical properties and flame retardancy of PLA composites containing zinc oxide and chain extender

2021 ◽  
pp. 50987
Author(s):  
Yajun Chen ◽  
Jingxiu He ◽  
Lifeng Xu ◽  
Bo Xu ◽  
Lijun Qian
Keyword(s):  
Mechanical Properties ◽  
Zinc Oxide ◽  
Flame Retardancy ◽  
Chain Extender

scholarly journals The flame retardancy and rheological properties of PA6/MCA modified by DOPO-based chain extender

RSC Advances ◽  
2017 ◽  
Vol 7 (32) ◽  
pp. 19593-19603 ◽  
Author(s):  
Jianan Cai ◽  
Alvianto Wirasaputra ◽  
Yaming Zhu ◽  
Shumei Liu ◽  
Yubin Zhou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rheological Properties ◽  
Flame Retardancy ◽  
Chain Extender ◽  
Chain Extension ◽  
P Addition

Addition of DOPO-based chain extender (DEP) simultaneously enhanced the flame retardancy and mechanical properties of PA6/MCA through chain extension and coaction in flame-retarding.

Ionic liquid modified graphene oxide for enhanced flame retardancy and mechanical properties of epoxy resin

2021 ◽  
pp. 50757
Author(s):  
Mei Wan ◽  
Jiahui Shen ◽  
Chunfeng Sun ◽  
Ming Gao ◽  
Lina Yue ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Graphene Oxide ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Modified Graphene Oxide ◽  
Modified Graphene

Mechanical properties of silty clay soil treated with a mixture of lime and zinc oxide nanoparticles

2021 ◽  
Vol 281 ◽  
pp. 122548
Author(s):  
Mahdi Khodaparast ◽  
Ali M. Rajabi ◽  
Mostafa Mohammadi
Keyword(s):  
Mechanical Properties ◽  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Clay Soil ◽  
Oxide Nanoparticles ◽  
Silty Clay ◽  
Silty Clay Soil

Expanded vermiculite-filled flexible polymer composites

2021 ◽  
pp. 009524432110290
Author(s):  
Mukaddes Sevval Cetin ◽  
Ozan Toprakci ◽  
Omer Suat Taskin ◽  
Abdullah Aksu ◽  
Hatice Aylin Karahan Toprakci
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Contact Angle ◽  
Polymer Composites ◽  
Flame Retardancy ◽  
Composite Films ◽  
Filler Concentration ◽  
High Shear ◽  
Flexible Polymer ◽  
Shear Mixing

This study focuses on the fabrication and characterization of vermiculite-filled flexible polymer composites. Exfoliated vermiculite was incorporated into triblock thermoplastic elastomer copolymer, styrene- b-(ethylene- co-butylene)- b-styrene (SEBS), at various levels from 1 to 15 wt% by a high shear mixer. The composite films were obtained by the combination of solvent casting and compression molding. The morphological, structural, thermal, and mechanical properties and contact angle of the composites were determined. Some micro-morphological differences were observed between the samples and the difference was assumed to be caused by high shear mixing and filler concentration. High shear mixing was found effective in terms of the detachment of vermiculite layers at all concentrations. However, at low filler loading, that behavior was more obvious. At 1 wt% filler concentration, mechanical properties increased that was probably caused by good filler-matrix interaction stemmed from smaller particle size. At higher vermiculite concentrations, fillers found to show agglomerations that led to a decrease in mechanical strength and strain at break. Elastic and secant modulus showed an increasing trend. Contact angle measurements were carried out to determine the oleophilic character of the samples. An increase in the vermiculite content resulted in higher oleophilic character and the lowest contact angle was obtained at 15 wt% VMT loading. In addition to these, thermal stability, thermal dimensional stability and flame retardancy were improved by the incorporation of VMT. 15 wt% vermiculite-filled sample showed the best performance in terms of thermal stability and flame retardancy.

An efficient method to improve simultaneously the water resistance, flame retardancy and mechanical properties of POE intumescent flame-retardant systems

RSC Advances ◽  
2015 ◽  
Vol 5 (21) ◽  
pp. 16328-16339 ◽  
Author(s):  
Rui-Min Li ◽  
Cong Deng ◽  
Cheng-Liang Deng ◽  
Liang-Ping Dong ◽  
Hong-Wei Di ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Efficient Method ◽  
Water Resistance ◽  
Intumescent Flame Retardant

The water resistance, flame retardancy and mechanical properties of POE intumescent flame-retardant systems were improved simultaneously.

Thermoplastic urethane elastomers IV. Effects of cycloaliphatic chain extender on dynamic mechanical properties

1975 ◽  
Vol 15 (9) ◽  
pp. 646-650 ◽  
Author(s):  
C. G. Seefried ◽  
J. V. Koleske ◽  
F. E. Critchfield ◽  
J. L. Dodd
Keyword(s):  
Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Chain Extender ◽  
Dynamic Mechanical

scholarly journals Progress in Biodegradable Flame Retardant Nano-Biocomposites

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 741
Author(s):  
Zorana Kovačević ◽  
Sandra Flinčec Grgac ◽  
Sandra Bischof
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Circular Economy ◽  
Nanocomposite Materials ◽  
Thermal And Mechanical Properties ◽  
Specific Group ◽  
New Class ◽  
Research Initiatives ◽  
Positive Properties

This paper summarizes the results obtained in the course of the development of a specific group of biocomposites with high functionality of flame retardancy, which are environmentally acceptable at the same time. Conventional biocomposites have to be altered through different modifications, to be able to respond to the stringent standards and environmental requests of the circular economy. The most commonly produced types of biocomposites are those composed of a biodegradable PLA matrix and plant bast fibres. Despite of numerous positive properties of natural fibres, flammability of plant fibres is one of the most pronounced drawbacks for their wider usage in biocomposites production. Most recent novelties regarding the flame retardancy of nanocomposites are presented, with the accent on the agents of nanosize (nanofillers), which have been chosen as they have low or non-toxic environmental impact, but still offer enhanced flame retardant (FR) properties. The importance of a nanofiller’s geometry and shape (e.g., nanodispersion of nanoclay) and increase in polymer viscosity, on flame retardancy has been stressed. Although metal oxydes are considered the most commonly used nanofillers there are numerous other possibilities presented within the paper. Combinations of clay based nanofillers with other nanosized or microsized FR agents can significantly improve the thermal stability and FR properties of nanocomposite materials. Further research is still needed on optimizing the parameters of FR compounds to meet numerous requirements, from the improvement of thermal and mechanical properties to the biodegradability of the composite products. Presented research initiatives provide genuine new opportunities for manufacturers, consumers and society as a whole to create a new class of bionanocomposite materials with added benefits of environmental improvement.

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