A new molecular design platform for high-performance polymers from versatile bio-based tyramine: a case study of tyramine-derived phthalonitrile resin

2021 ◽  
Author(s):  
Menghao Chen ◽  
Xian He ◽  
Yuhang Guo ◽  
Jianghuai Hu ◽  
Bo Liang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Molecular Design ◽  
Excellent Thermal Stability ◽  
High Performance Polymers

Tyramine was first introduced into high-performance polymers as a promising monomer platform; the derived phthalonitrile resin exhibits excellent thermal stability and a high Tg value.

Synthesis and properties of random polysulfone/polyethersulfone copolymers as high-performance polymers

2011 ◽  
Vol 31 (4) ◽  
Author(s):  
Yi-Nan Zhang ◽  
Shu-Ling Zhang ◽  
Yan-Hua Yang ◽  
Hong-Yi Qin ◽  
Dong Jiang
Keyword(s):  
Thermal Stability ◽  
Weight Loss ◽  
Tensile Strength ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
High Performance ◽  
Excellent Thermal Stability ◽  
Elongation At Break ◽  
High Performance Polymers

Abstract A series of random polysulfone/polyethersulfone (PSF/PES) copolymers were synthesized by the polycondensation of 4,4′-isopropylidenediphenol, 4,4′-dihydroxyldiphenylsulfone, and 4,4′-dichlorodiphenylsulfone in the presence of potassium carbonate. The resulting copolymers displayed similar solubility with PSF and PES. The glass transition temperature and the 5% weight loss temperature of these copolymers varied in the range of 199°C–299°C and 467°C–498°C, respectively, which showed excellent thermal stability. Moreover, the elongation at break of these copolymers was much higher than that of PES, whereas the tensile strength was a little lower.

Semi-bio-based aromatic polyamides from 2,5-furandicarboxylic acid: toward high-performance polymers from renewable resources

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87013-87020 ◽  
Author(s):  
Kaiju Luo ◽  
Yan Wang ◽  
Junrong Yu ◽  
Jing Zhu ◽  
Zuming Hu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Renewable Resources ◽  
High Performance ◽  
Good Thermal Stability ◽  
Aromatic Polyamides ◽  
High Performance Polymers ◽  
Furandicarboxylic Acid

Aromatic furanic polyamides with relatively high molecular weight were synthesized, and good thermal stability and mechanical properties were demonstrated.

Pressure-controlled synthesis of high-performance SrLiAl3N4:Eu2+ narrow-band red phosphors

2018 ◽  
Vol 6 (38) ◽  
pp. 10174-10178 ◽  
Author(s):  
Mu-Huai Fang ◽  
Yi-Ting Tsai ◽  
Hwo-Shuenn Sheu ◽  
Jyh-Fu Lee ◽  
Ru-Shi Liu
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Narrow Band ◽  
Controlled Synthesis ◽  
Excellent Thermal Stability ◽  
Red Phosphors ◽  
Pressure Controlled ◽  
Emission Bandwidth ◽  
Narrow Emission

SrLiAl3N4:Eu2+ (SLA) phosphors have gained increasing attention worldwide due to their narrow emission bandwidth and excellent thermal stability.

Indole-based high-performance polymeric materials with enhanced mechanical and thermal properties via cation-π interaction

2019 ◽  
Vol 32 (6) ◽  
pp. 662-668
Author(s):  
Xiao-fang Guan ◽  
Cong Liao ◽  
Li Yang ◽  
Guan-jun Chang
Keyword(s):  
Thermal Stability ◽  
Heat Resistance ◽  
Self Assembly ◽  
High Performance ◽  
Mechanical Performance ◽  
Polymeric Materials ◽  
Design Strategy ◽  
Mechanical And Thermal Properties ◽  
Innovative Design ◽  
High Performance Polymers

The preparation of high-performance polymeric materials with both excellent overall mechanical properties and heat resistance remains a considerable challenge. Inspired by the delicate self-assembly processes in nature, a facile strategy is reported for the preparation of high-performance polymeric materials with enhanced mechanical strength and improved thermal stability. In this instance, we successfully constructed a cation- π cross-linked polyimide (Na-poly(aryl indole) imide (Na-PINI)) film with enhanced mechanical performance and heat resistance (∼490°C). This work presents an innovative design strategy for realizing robust polymeric materials with integrated strength and thermal stability; the cation- π interaction is demonstrated to be a new method that may achieve many useful properties for high-performance polymers.

Heat-resistant and photoluminescent indole-based poly(ether sulfone)s

2017 ◽  
Vol 30 (4) ◽  
pp. 475-479 ◽  
Author(s):  
Wenxuan Wei ◽  
Li Yang ◽  
Guanjun Chang
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Proton Nuclear Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Condensation Polymerization ◽  
High Glass Transition Temperature ◽  
Scanning Calorimetry ◽  
Good Thermal Stability ◽  
High Performance Polymers ◽  
Good Agreement

Indole-based poly(ether sulfone)s (PINESs), as novel high-performance polymers, have been obtained by the condensation polymerization of 4-hydroxyindole and hydroquinone with activated difluoro monomers via a catalyst-free nucleophilic substitution reaction. The structures of the polymers are characterized by means of Fourier transform infrared and proton nuclear magnetic resonance spectroscopy, and the results show good agreement with the proposed structures. Differential scanning calorimetry and thermogravimetric analysis measurements exhibit that polymers possess high glass transition temperature ( Tgs > 245°C) and good thermal stability with high decomposition temperatures ( Tds > 440°C). In addition, due to their special structure, PINESs are endowed with significantly strong photonic luminescence in N, N-dimethylformamide.

High performance Fe-based nanocrystalline alloys with excellent thermal stability

2019 ◽  
Vol 776 ◽  
pp. 606-613 ◽  
Author(s):  
Tao Liu ◽  
Fucheng Li ◽  
Anding Wang ◽  
Lei Xie ◽  
QuanFeng He ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Nanocrystalline Alloys ◽  
Excellent Thermal Stability

Rheological Behaviors Characterization and Modeling of a Novel Three-Branched Phenylethynyl-Terminated Imide Oligomer

2011 ◽  
Vol 199-200 ◽  
pp. 83-86
Author(s):  
Chang Wei Liu ◽  
Xiao Gang Zhao ◽  
Cheng Yang Wang ◽  
Xiao Hui Yu ◽  
He Jia ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Composite Material ◽  
High Performance ◽  
Resin Transfer Molding ◽  
Experimental Measurements ◽  
Melt Viscosity ◽  
Arrhenius Model ◽  
Excellent Thermal Stability ◽  
Transfer Molding ◽  
High Performance Resin

To prepare novel polyimides with enhanced thermal stability and low melt viscosity, a novel three-branched phenylethynyl-terminated imide oligomer was introduced. The oligomer can be used to prepare high performance resin-based composite material via resin transfer molding (RTM) due to its low melt viscosity (<2Pa.s) between 250°C and 320°C. The cured resin exhibits excellent thermal stability and higher glass transition temperature than PETI series as a result of the introduction of star-branched units. In this research, the rheological properties of the oligomer were measured and numerically fit with the dual Arrhenius model to predict the progression of the viscosity during cure. The calculated kinetic activation energies for gelation with two different Arrhenius equations, 120.8kJ/mol and 164kJ/mol, respectively,had some differences. The numerical results were compared with the experimental measurements, and it was found that the model predicts the experimental observations quite well.

A High-Performance Curing System for Halobutyl Elastomers

1987 ◽  
Vol 60 (1) ◽  
pp. 62-77 ◽  
Author(s):  
D. C. Edwards
Keyword(s):  
Thermal Stability ◽  
Zinc Oxide ◽  
Elastic Properties ◽  
Aromatic Amine ◽  
High Performance ◽  
Storage Stability ◽  
Rapid Rise ◽  
Excellent Thermal Stability ◽  
Compression Set ◽  
Ozone Resistance

Abstract 1. In halobutyl elastomers, zinc oxide interacts synergistically with aromatic amine antioxidants such as APDA 86, DPPD, or DNPD, to produce fast, tight cures. 2. In the case of DNPD, compound storage stability appears to be satisfactory, and the resistance to scorch at processing temperatures is ample. 3. The cure behavior of these systems, particularly in bromobutyl, is exceptionally favorable: a rapid rise to a remarkably flat plateau. 4. The vulcanizates exhibit excellent thermal stability (compression set) and excellent ozone resistance. Measurable elastic properties are retained following 72 h air aging at 200°C.

scholarly journals High performance polyimides with good solubility and optical transparency formed by the introduction of alkyl and naphthalene groups into diamine monomers

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 40996-41003 ◽  
Author(s):  
Tianyun Li ◽  
Huahua Huang ◽  
Lei Wang ◽  
Yongming Chen
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Optical Transparency ◽  
Excellent Thermal Stability ◽  
Microwave Assisted ◽  
Good Solubility ◽  
Optically Transparent ◽  
Diamine Monomer

Highly soluble and optically transparent polyimides with excellent thermal stability were prepared by the introduction of alkyl and naphthalene groups into a single diamine monomer under microwave-assisted polymerization.

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