The Mechanical Property and Crystalline Structure of Novel High-Strength Polyamide Fibers

2019 ◽  
pp. 33-46
Author(s):  
Weinan Pan ◽  
Jiaguang Sheng ◽  
Hengxue Xiang ◽  
Linggen Kong ◽  
Gongxun Zhai ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Crystalline Structure ◽  
High Strength ◽  
Polyamide Fibers

High strength of hybrid double-network hydrogels imparted by inter-network ionic bonds

2019 ◽  
Vol 7 (2) ◽  
pp. 324-333 ◽  
Author(s):  
Xiaoyan Zhao ◽  
Jun Liang ◽  
Guorong Shan ◽  
Pengju Pan
Keyword(s):  
Mechanical Property ◽  
High Strength ◽  
Double Network ◽  
Ionic Bonds

Interaction between networks has been proven to be of importance for mechanical property enhancement of double-network (DN) hydrogels.

The Microstructure and Formability Study on DP Steel of Lightweight Automobile

2011 ◽  
Vol 704-705 ◽  
pp. 1465-1472
Author(s):  
Jin Wu ◽  
Da Sen Bi ◽  
Liang Chu ◽  
Jian Zhang ◽  
Yun Tao Li
Keyword(s):  
Mechanical Property ◽  
Work Hardening ◽  
High Strength Steel ◽  
High Strength ◽  
Mathematic Model ◽  
Theoretical Research ◽  
Forming Limit ◽  
Strain Hardening Exponent ◽  
Dp Steel ◽  
Better Than

Dual phase (DP) steel is a high strength steel for auto-panel. In this paper, mechanical property, forming ability, baked-hardening and work hardening properties of high strength steel DP450 are studied by experiments, and compared with those of steel MS6000.And theoretical research on predicting the forming limit of steel DP450 by the NADDRG model. The established mathematic model for relativity is of practical usefulness. Experimental results reveal that the yield strength of steel DP450 is about 7.2% lower than the MS6000,and the break strength increases by 18.9%,while the elongation increases by 19%.The strain hardening exponent of steel DP450 are superior to those of MS6000.The results show that mechanical property of high strength steel DP450 is better than that of MS6000,while forming ability of DP450 is not lower than that of MS6000.And baked-hardening and work hardening properties of steel DP450 are better than those of MS6000.The steel sheet DP450 owned a good forming ability.

Mechanical Property of Phosphoaluminate Cement

2010 ◽  
Vol 150-151 ◽  
pp. 1754-1757 ◽  
Author(s):  
Peng Liu ◽  
Zhi Wu Yu ◽  
Ling Kun Chen ◽  
Zhu Ding
Keyword(s):  
Mechanical Property ◽  
Compressive Strength ◽  
Phase Composition ◽  
Electrical Properties ◽  
Pore Size Distribution ◽  
Pore Size ◽  
High Strength ◽  
Curing Time ◽  
Hydration Products ◽  
Resistance Value

The influence of curing time on the mechanical property of the phosphoaluminate cement (PAC) was investigated, and the mechanism was discussed as well. The phase composition and morphology of hydration products, electrical properties, porosity and pore size distribution of PAC cured different age were analyzed with XRD, EIS and MIP. The results showed PAC has the property of early-high strength, and the compressive strength of PAC cured for 1 day was about 70% of 28 days’. The main hydration products of PAC are micro-crystal phase and gel of phosphate and phosphoaluminate which formed compacter microstructure. In addition, there are no calcium hydroxide (CH) and ettringite (AFt) produced during the process of hydration. The compressive strength of PAC increased with age, which was due to more products continuously produced. The ac resistance analysis manifested as the change of the nyquist pattern and resistance value.

Mechanical Property Experiments with Ultra-High Strength Micrometer Scale Fibers

2015 ◽  
Vol 55 (5) ◽  
pp. 877-885 ◽  
Author(s):  
K. Şahin ◽  
N. A. Fasanella ◽  
P. V. Kolluru ◽  
I. Chasiotis
Keyword(s):  
Mechanical Property ◽  
High Strength ◽  
Micrometer Scale

Processing-Mechanical Property Relationship of Hollow and Porous Carbon Fibers Fabricated by Coaxial Electrospinning

2018 ◽  
Author(s):  
Yijun Chen ◽  
Jizhe Cai ◽  
James G. Boyd ◽  
Mohammad Naraghi
Keyword(s):  
Mechanical Property ◽  
Carbon Fibers ◽  
Mechanical Performance ◽  
Fiber Surface ◽  
High Strength ◽  
Hollow Fibers ◽  
Coaxial Electrospinning ◽  
Solid Shell ◽  
Porous Shell ◽  
Hollow Carbon

High strength hollow carbon fibers with both porous and solid shell were fabricated by a combination of coaxial electrospinning and emulsion electrospinning. In the coaxial electrospinning, a Polyacrylonitrile (PAN)/ Poly(methyl methacrylate) (PMMA)/Dimethylformamide (DMF) emulsion was used to form the porous shell and a PAN/DMF solution was used to form the solid shell. Fiber surface and cross-section morphology was studied by scanning electron microscope (SEM). Mechanical property of the hollow fibers was characterized by single fiber tensile test using microelectromechanical system devices (MEMS). The effect of pores on mechanical performance of the hollow fibers was studied. Hollow carbon fibers with porous and solid shell both showed a brittle fracture behavior. The modulus and strength of the hollow carbon fibers with solid shell was ∼ 76.1 GPa and 2.04 GPa, respectively. For the hollow carbon fibers with porous shell, the porosity led to ∼ 35 % reduction in strength. The porous fibers with the mediocre strength measured here open new horizons for combining structural functionality with energy storage, in so-called structural batteries.

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