Thermally Stabilized Polyaniline With m-Xylylenedisulfonic Acid And Its Application For A Counter Electrode Of A Tantalum Capacitor

1995 ◽  
Vol 413 ◽  
Author(s):  
H. Ishikawa ◽  
H. Yageta ◽  
K. Amano ◽  
M. Satoh ◽  
E. Hasegawa
Keyword(s):  
Thermal Stability ◽  
Counter Electrode ◽  
Oxidative Polymerization ◽  
Dielectric Surface ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Small Series ◽  
Conductive Polyaniline ◽  
Tantalum Capacitor ◽  
Improved Characteristics

ABSTRACTWe have succeeded in preparing a conductive polyaniline (PAn) with improved thermal stability from a chemical oxidative polymerization of aniline by using an oxidant and a novel protonic acid, m-xylylenedisulfonic acid (XDSA). The acid was synthesized from dibromoxylene and characterized by elemental analysis, IR and NMR spectroscopies. The polymer which is doped with XDSA shows a high conductivity of 5 S/cm. The conductivity does not change with annealing at 125°C in air for over 1000 hours. This polymer exhibits good thermal stability, and this stability is attributed to XDSA dopant, which consists of a bi-functional sulfonic group bonded to a polymer chain. By immersing an anodized tantalum pellet into a reactive solution, PAn doped with XDSA film is formed on the dielectric surface. The tantalum capacitor using PAn doped with XDSA as a counter electrode shows the improved characteristics: high apparent capacitance (90%), and small series resistance (<200mΩ at 100kHz). The capacitor demonstrates an excellent thermal stability due to because of the exceptional heat-resistance of PAn doped with XDSA formed in the capacitor.

Thermal Stability of Solid Aluminum Electrolytic Capacitors with Conductive Polyaniline Counter Electrode

2012 ◽  
Vol 512-515 ◽  
pp. 1018-1021
Author(s):  
Xu Fei Zhu ◽  
Long Fei Jiang ◽  
Wei Xing Qi ◽  
Chao Lu ◽  
Ye Song
Keyword(s):  
Thermal Stability ◽  
Counter Electrode ◽  
Electrolytic Capacitor ◽  
Aluminum Electrolytic Capacitor ◽  
Dodecylbenzenesulfonic Acid ◽  
Excellent Thermal Stability ◽  
High Frequencies ◽  
Solid Aluminum ◽  
Good Thermal Stability ◽  
Thermal Stability Of

To overcome the risk of electrolyte leakage and the shortcoming of higher impedance at high frequencies for the conventional aluminum electrolytic capacitor impregnated with electrolyte solutions, solid aluminum electrolytic capacitor employing conducting polyaniline (PANI) as a counter electrode was developed. The as-fabricated solid capacitors have very low impedances at high frequencies and excellent thermal stability. The superior performances can be ascribed to high conductivity and good thermal stability of the camphorsulfonic acid (CSA)-dodecylbenzenesulfonic acid (DBSA) co-doped PANI.

Janus molecules: large second-order nonlinear optical performance, good temporal stability, excellent thermal stability and spherical structure with optimized dendrimer structure

2018 ◽  
Vol 2 (7) ◽  
pp. 1374-1382 ◽  
Author(s):  
Pengyu Chen ◽  
Huanyu Zhang ◽  
Mengmeng Han ◽  
Ziyao Cheng ◽  
Qian Peng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Nonlinear Optical ◽  
Temporal Stability ◽  
Second Order ◽  
Optical Performance ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Spherical Structure ◽  
Electro Optic

A Janus molecule J2 containing five FTC moieties exhibited good thermal stability, excellent electro-optic performance and good temporal stability.

Effect of Long-Term Aging on Microstructure and Mechanical Properties of a Wrought Ni-Base Superalloy

2015 ◽  
Vol 816 ◽  
pp. 546-550
Author(s):  
Chao Yuan ◽  
Huan Wang ◽  
Jian Ting Guo ◽  
He Yong Qin
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Room Temperature ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Increasing Trend ◽  
Size And Morphology ◽  
Strength And Plasticity ◽  
Base Superalloy

During long-term and high temperature service, microstructures of superalloys may change and then have an adverse impact on mechanical properties, so the stabilities of a wrought Ni-base superalloy aging without stress at 650°C were investigated in this paper. The results showed that the size and morphology of γ' precipitates in the alloy were not obviously influenced with the increase of exposure time, and primary MC carbides present excellent thermal stability. Moreover, almost no detrimental phase was found. Tensile strength and plasticity at room temperature after aging remained steady. Under the condition of 650°C/823MPa, the stress ruptures life presented increasing trend overall and plasticity decreases slightly. In conclusion, the experiment alloy presents a good thermal stability at 650°C.

Finite Element Analysis and Optimization of Thermal Deformation of Resin Concrete Manufacturing Bases

2014 ◽  
Vol 543-547 ◽  
pp. 4010-4013
Author(s):  
Yao Chen ◽  
Xiu Xia Liang ◽  
Shuang Qiu
Keyword(s):  
Thermal Stability ◽  
Machine Tool ◽  
Thermal Deformation ◽  
Precision Machining ◽  
Element Analysis ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Machining Center ◽  
Ultra Precision ◽  
Thermal Stability Of

Resin concrete generally has good mechanical properties, excellent thermal stability and great vibration resistance, the model of the ultra-precision machining center bed is established to study the thermal stability of the resin concrete using virtual reality and collaborative simulation technology based on Pro/E and ANSYS Workbench. The main factors that affect the machine tool bed thermal deformation were found through analyzing the deformation results and the materials and restrain conditions were optimized. The results proved that the optimized machine tool bed has good thermal stability and theoretical basis was provided to improve the thermal stability of the ultra-precision machining centers.

Conductive Polyaniline and Paper Reinforced Composites

2014 ◽  
Vol 556-562 ◽  
pp. 123-126
Author(s):  
Jin Hua Yan ◽  
Ren Mei Xu ◽  
Na Yun
Keyword(s):  
Thermal Stability ◽  
Mechanical Strength ◽  
Interfacial Polymerization ◽  
Lower Surface ◽  
Paper Substrate ◽  
Oh Groups ◽  
Good Thermal Stability ◽  
Conductive Composites ◽  
Novel Method ◽  
Conductive Polyaniline

A novel method of direct aniline multi-interfacial polymerization on paper substrate is introduced in this paper. Cellulose base papers with and without PAE reinforced were discussed. The PANI-paper composites after more than 3 polymerizations had much lower surface resistivity. Their mechanical strength and thermal stability were analyzed by tensile test and GTA. FTIR results explained that there was strong interaction between NH groups in aniline monomers and OH groups in fibers. Conductive composites made with PAE treated paper had both good thermal stability and good mechanical strength with high conductivity.

scholarly journals A polyimide/cellulose lithium battery separator paper

2019 ◽  
Vol 79 ◽  
pp. 03004 ◽  
Author(s):  
Shanshan Wang ◽  
Chuanshan Zhao ◽  
Wenjia Han ◽  
Yifei Jiang
Keyword(s):  
Thermal Stability ◽  
Bacterial Cellulose ◽  
Lithium Battery ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Wetting Properties ◽  
Battery Separator ◽  
Electrolyte Wetting ◽  
Composite Separator ◽  
Cellulose Composite

A PI/cellulose composite separator was prepared by adsorbing bacterial cellulose on a PI separator prepared via a papermaking process. The PI/cellulose separator exhibited good thermal stability and electrolyte wetting properties compared to commercial celgard 2340 separator. The amount of bacterial cellulose added was 20%. Bacterial cellulose fills the porosity of the PI separator. The PI/cellulose composite separator possesses excellent thermal stability even at 200 °C and high electrolyte wettability with a contact angle of 58°.

Novel fluorinated hyperbranched polyimides with excellent thermal stability, UV-shielding property, organosolubility, and low dielectric constants

2017 ◽  
Vol 30 (7) ◽  
pp. 872-886 ◽  
Author(s):  
Qing Li ◽  
Shulai Zhang ◽  
Guangfu Liao ◽  
Changfeng Yi ◽  
Zushun Xu
Keyword(s):  
Thermal Stability ◽  
Tensile Modulus ◽  
Contact Angles ◽  
Dielectric Constants ◽  
Condensation Polymerization ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Uv Shielding ◽  
Air Atmosphere ◽  
Hyperbranched Polyimides

A novel fluorinated aromatic triamine, named 1,3,5-tris (4-(2-trifluoromethyl-4-aminophenoxy)phenyl) benzene (TTFAPOPB), with several –CF3 groups, prolonged chain segments, and ether bonds was first successfully synthesized via a three-step reaction. Then a series of fluorinated hyperbranched polyimides (FHBPIs) with terminal amino or anhydride groups were prepared by condensation polymerization, which were derived from three commercial dianhydrides and the obtained triamine. The prepared FHBPIs showed excellent optical properties with the transmittance reaching 94.5% at 800 nm, favorable ultraviolet (UV)-shielding property with only 27% photodegradation of methylene blue solution after intense UV irradiation for 50 min, good thermal stability with glass transition temperature between 225°C and 264°C, and 10% weight loss temperature of 520–555°C and 509–541°C, respectively, in nitrogen and air atmosphere. They also exhibited relatively good mechanical properties with tensile strength, tensile modulus, and elongation at break values of 64.2–84.2 MPa, 1.2–1.5 GPa, and 6–10%, respectively. Moreover, the introduction of –CF3 and hyperbranched architecture reduced the dielectric constants of the FHBPIs to 2.69–2.92 and increased the surface contact angles to more than 98°. Thus, the FHBPIs are promising dielectric or UV-shielding materials.

AO-resistant shape memory polyimide/silica composites with excellent thermal stability and mechanical properties

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 72971-72980 ◽  
Author(s):  
Zenghui Yang ◽  
Qihua Wang ◽  
Yongkang Bai ◽  
Tingmei Wang
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Shape Memory ◽  
Composite Films ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Silica Composite

Shape memory polyimide/silica composite films show AO-resistant performance, good thermal stability and mechanical properties.

Synthesis and Luminescent Properties of Novel Polythiophene Derivatives with 1,3-Dioxane Group

2010 ◽  
Vol 663-665 ◽  
pp. 268-271 ◽  
Author(s):  
Rong Li ◽  
Yu Jiao Jiang ◽  
Fei Chen ◽  
Hong Lei Mao ◽  
Yong Hong Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Oxidative Polymerization ◽  
Luminescent Properties ◽  
Side Chain ◽  
Methyl Substitution ◽  
Good Thermal Stability ◽  
Molecular Weights ◽  
Chemical Structures ◽  
Precursor Polymers ◽  
Ft Ir

Two novel polythiophenes with 1,3-dioxane group in the side chain named poly[3-(1,3-dioxane-2-ylethyl)thiophene] (PDT) and poly[3-(1,3-dioxane-2-ylethyl)-4-methyl- thiophene] (PDMT) were synthesized via oxidative polymerization firstly to form their precursor polymers and substitution secondly to obtain the target polymers in this paper. The chemical structures, molecular weights, thermal properties of the polymers were characterized by 1H NMR, FT-IR, GPC, and TGA respectively, indicating that both polymers had high molecular weight and good thermal stability. Meanwhile, the optical absorption and photoluminescence (PL) of both polymers were investigated and the results showed that the maximum absorption and emission wavelengths of PDMT were blue-shifted than that of PDT due to its methyl-substitution at 4-position in thiophene.

Using CoSi2 /Polysilicon Polycide Structure as a Gate Diffusion Source in Rapid Thermal Processing

1993 ◽  
Vol 303 ◽  
Author(s):  
W. Chen ◽  
J. Lin ◽  
S. Banerjee ◽  
J. Lee
Keyword(s):  
Thermal Stability ◽  
Gate Oxide ◽  
Oxide Interface ◽  
Excellent Thermal Stability ◽  
Good Thermal Stability ◽  
Polysilicon Gate ◽  
Gate Structure ◽  
Diffusion Source ◽  
Short Time ◽  
Thermal Stability Of

ABSTRACTIon implanted CoSi2 as a gate doping source has been studied as a compatible process to the Silicide-As Diffusion-Source (SADS) process which has been widely considered for shallow source/drain junction formation. The effects of the polysilicon gate microstructure on diffusion behavior and the thermal stability of CoSi2 has been investigated. It has been found that CoSi2 formed on reoxidized polysilicon gates has poor thermal stability but requires short time to achieve degenerate doping near the polysilicon/gate oxide interface. On the other hand, CoSi2 formed on as-deposited amorphous silicon has excellent thermal stability but requires longer time to achieve degenerate doping near the polysilicon/gate oxide interface. The trade-off between the required thermal budget to achieve degenerate doping and thermal stability of the CoSi2/polysilicon gate structure will be discussed. In optimizing the process, our results indicated that reoxidized amorphous Si gates have both good thermal stability as well requiring short time to achieve degenerate doping. The thermal degradation of CoSi2 was found to have little effect on the gate oxide breakdown voltage.

Sign in / Sign up

Export Citation Format

Share Document