The influence of high-molecular fractions on the physico-mechanical properties of high-modulus viscose rayon

1973 ◽  
Vol 4 (2) ◽  
pp. 185-187
Author(s):  
A. G. Kudryavtseva ◽  
E. M. Mogilevskii ◽  
S. P. Papkov
Keyword(s):  
Mechanical Properties ◽  
Viscose Rayon ◽  
High Modulus

Autonomous self-healing polyisoprene elastomers with high modulus and good toughness based on the synergy of dynamic ionic crosslinks and highly disordered crystals

2020 ◽  
Vol 11 (41) ◽  
pp. 6549-6558
Author(s):  
Yohei Miwa ◽  
Mayu Yamada ◽  
Yu Shinke ◽  
Shoichi Kutsumizu
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Self Healing ◽  
High Modulus ◽  
Disordered Crystals ◽  
Ionic Crosslinks

We designed a novel polyisoprene elastomer with high mechanical properties and autonomous self-healing capability at room temperature facilitated by the coexistence of dynamic ionic crosslinks and crystalline components that slowly reassembled.

scholarly journals High modulus polyimide particle-reinforcement of epoxy composites

2021 ◽  
Author(s):  
Johannes Essmeister ◽  
M. Josef Taublaender ◽  
Thomas Koch ◽  
D. Alonso Cerrón-Infantes ◽  
Miriam M. Unterlass ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Composite Materials ◽  
Epoxy Matrix ◽  
Epoxy Composites ◽  
High Modulus ◽  
Particle Reinforcement

A novel class of fully organic composite materials with well-balanced mechanical properties and improved thermal stability was developed by incorporating highly crystalline, hydrothermally synthesized polyimide microparticles into an epoxy matrix.

Wear Mechanism of Unidirectionally Oriented Fiber-Reinforced Plastics

1977 ◽  
Vol 99 (4) ◽  
pp. 401-407 ◽  
Author(s):  
T. Tsukizoe ◽  
N. Ohmae
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers ◽  
Wear Behavior ◽  
High Modulus ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Sliding Direction ◽  
Oriented Fiber ◽  
Fiber Reinforcements ◽  
Fiber Reinforced Plastics

Wear between unidirectionally oriented fiber-reinforced-plastics and mild steel has been investigated. The wear behavior was found to be greatly influenced by the sliding direction, the mechanical properties of fiber-reinforced-plastics and by the tribological properties of fiber-reinforcements or matrices. A summarization of wear-resistance of seven different kinds of fiber-reinforced-plastics signified that the epoxy resin reinforced with high-modulus carbon fibers was the best wear-resistant fiber-reinforced-plastics.

scholarly journals Preparation and Properties of Viscose Rayon/O-carboxymethyl Chitosan Antibacterial Fibers

2011 ◽  
Vol 6 (3) ◽  
pp. 155892501100600 ◽  
Author(s):  
Youbo Di ◽  
Guoqiang Long ◽  
Huiqin Zhang ◽  
Qingshan Li
Keyword(s):  
Mechanical Properties ◽  
Viscose Rayon ◽  
Moisture Absorption ◽  
Cellulose Xanthate ◽  
Carboxymethyl Chitosan ◽  
Infrared Scanning ◽  
Transmission Electron ◽  
Structure Morphology ◽  
Viscose Process ◽  
Morphology And Mechanical Properties

Antimicrobial viscose rayon/O-carboxymethyl chitosan fibers (VCMFs) were manufactured by spinning the mixture of O-carboxymethyl chitosan (O-CMCS) xanthate and cellulose xanthate via the viscose process. The structure, morphology and mechanical properties were investigated by infrared, scanning electron microscopy, transmission electron microscope and tensile test. The results show that the blend fibers of cellulose and O-CMCS were satisfactorily prepared and the two polymers were mixed homogeneously. VCMFs display striation along the fiber similar to those of viscose rayon fibers, and their mechanical properties are close to that of viscose rayon. With O-CMCS blended, VCMFs showed good moisture absorption and antibacterial activity against E.coli.

ARAMID–NYLON 6.6 HYBRID CORDS AND INVESTIGATION OF THEIR PROPERTIES

2012 ◽  
Vol 85 (2) ◽  
pp. 180-194 ◽  
Author(s):  
Berrin Yilmaz
Keyword(s):  
Mechanical Properties ◽  
Linear Density ◽  
Thermally Stable ◽  
High Modulus ◽  
Synthetic Yarn ◽  
Product Property ◽  
High Fatigue ◽  
High Elongation ◽  
Low Modulus ◽  
Twist Level

Abstract Hybrid cords of two different polyamide yarns, poly(p-phenylene terephthalamide; aramid) and poly(hexamethylene adipamide; nylon 6.6) have been investigated. Aramid is a high-tenacity, high-modulus, low-elongation, and thermally stable yarn material. Nylon 6.6 is a high-elongation, low-modulus, high-fatigue-resistant, and good adhering synthetic yarn. The combination of these two different synthetic yarns enables hybrid cords with a diversified range of mechanical properties. The hybrid cord product property diversification is achieved by proper combination of different cord-forming properties of individual plies, such as linear densities, twist levels, ply numbers, treating conditions, and so forth. The effect of linear densities, twist level of plies, and twist level of cabled cord and ply number on the cord properties and also cord performance have been summarized. Aramid yarn having an 1100 linear density has been combined with nylon 6.6 yarn with a different linear density, ranging from 940 to 2100, to form hybrid cord structures. Twisting of aramid and nylon 6.6 yarns has been kept between 150 and 450 twists per meter, while the ply number of aramid and nylon 6.6 yarns has been varied as one and two plies by keeping the total ply number of the cord as three.

Effect of Treating Time on Mechanical Properties and Structure of Aramid Fibers during Heat Drawing

2015 ◽  
Vol 789-790 ◽  
pp. 71-74
Author(s):  
Hai Juan Kong ◽  
Peng Yang ◽  
Cui Qing Teng ◽  
Ahmed M.S. Dawelbeit ◽  
Mu Huo Yu
Keyword(s):  
Mechanical Properties ◽  
Heat Treating ◽  
Line Orientation ◽  
Wide Angle ◽  
Drawing Process ◽  
Two Dimensional ◽  
High Modulus ◽  
Aramid Fibers ◽  
Crystalline Perfection ◽  
Angle Scattering

High modulus Poly (p-phenyleneterephalamide)(PPTA) fibers was prepared by heat drawing process, in which the fibers rearranged their structures for further improvements in their crystalline perfection, crystal line orientation. The modulus of PPTA fibers could be improved when fibers treated in an appropriate condition. The influences of heat treating time on the structures of the fibers and their properties were investigated by using two-dimensional wide-angle scattering (WAXS).

Mechanical properties of hybrid composites reinforced by carbon fiber and high-strength and high-modulus polyimide fiber

Polymer ◽  
2020 ◽  
Vol 204 ◽  
pp. 122830
Author(s):  
Bin He ◽  
Boyao Wang ◽  
Zhanwen Wang ◽  
Shengli Qi ◽  
Guofeng Tian ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Hybrid Composites ◽  
High Strength ◽  
High Modulus ◽  
Polyimide Fiber

Improving the mechanical properties of Fe – TiB2 high modulus steels through controlled solidification processes

2016 ◽  
Vol 118 ◽  
pp. 187-195 ◽  
Author(s):  
H. Zhang ◽  
H. Springer ◽  
R. Aparicio-Fernández ◽  
D. Raabe
Keyword(s):  
Mechanical Properties ◽  
High Modulus ◽  
Solidification Processes
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