scholarly journals Reconstruction of the Microstructure of Cyanate Ester Resin by Using Prepared Cyanate Ester Resin Nanoparticles and Analysis of the Curing Kinetics Using the Avrami Equation of Phase Change

2019 ◽  
Vol 9 (11) ◽  
pp. 2365
Author(s):  
Hongtao Cao ◽  
Beijun Liu ◽  
Yiwen Ye ◽  
Yunfang Liu ◽  
Peng Li
Keyword(s):  
Phase Change ◽  
Curing Kinetics ◽  
Cyanate Ester ◽  
Avrami Equation ◽  
Resin Matrix ◽  
Curing Process ◽  
Microscopic Mechanism ◽  
Mechanism Model ◽  
Cyanate Ester Resin ◽  
Gel Particles

Bisphenol A dicyanate (BADCy) resin nanoparticles were synthesized by precipitation polymerization and used to modulate the microstructure of the BADCy resin matrix. A microscopic mechanism model was used to characterize the curing process of BADCy resin systems with different contents of the prepared nanoparticles. Due to the curing process of the thermosetting resin being analogous to the crystallization process of the polymer, the Avrami equation was used to analyze the microscopic mechanism of the curing process. The reactive functional groups, structure, and size of the prepared BADCy resin nanoparticles were characterized by FT-IR, SEM, and TEM, respectively. The kinetic parameters of different systems were then obtained using the Avrami equation, and they adequately explained the microscopic mechanism of the curing process. The results showed that the Avrami equation effectively described the formation and growth of gel particles during the curing process of the BADCy resins. The addition of nanoparticles can affect the curing behavior and curing rate. Since the reaction between the BADCy resin nanoparticles and the matrix is dominant, the formation process of the gel particles was neglected. This phenomenon can be understood as the added BADCy resin nanoparticles replacing the formation of gel particles. The reasons for accelerated curing were analyzed from the perspective of thermodynamics and kinetics. Besides this, the Arrhenius equation for non-isothermal conditions correctly accounted for the change in the cross-linked mechanism in the late-stage curing process. A comparison of the theoretical prediction with the experimental data shows that the Avrami theory of phase change can simulate the curing kinetics of different BADCy resin systems well and explain the effects of BADCy resin nanoparticles on the formation of the microstructure.

POSS-NH2/Cyanate Ester Resin Organic-Inorganic Hybrids: Curing Reaction and Dielectric Properties

2011 ◽  
Vol 266 ◽  
pp. 147-150 ◽  
Author(s):  
Zeng Ping Zhang ◽  
Shuan Fa Chen ◽  
Jian Zhong Pei
Keyword(s):  
Dielectric Properties ◽  
Catalytic Effect ◽  
Curing Kinetics ◽  
Cyanate Ester ◽  
Cyanate Ester Resin ◽  
Curing Reaction ◽  
Ft Ir ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Different Content

A functional POSS monomer (POSS-NH2) was employed to modify cyanate ester (CE) resin. A series of POSS-NH2/CE hybrids containing different content of POSS have been prepared by melt casting and then curing. The curing kinetics and reaction mechanisms of the resin systems were studied by using FT-IR. Dielectric properties of the hybrids were also investigated. FT-IR results show that both temperature and POSS content may influence the curing reaction of CE. POSS-NH2 mainly displays the catalytic effect at higher temperature (220oC). The circumstance is more complex at lower temperature(190oC). CE1 containing 1 wt% of POSS has the best dielectric properties.

scholarly journals Improved Mechanical, Anti-UV Irradiation, and Imparted Luminescence Properties of Cyanate Ester Resin/Unzipped Multiwalled Carbon Nanotubes/Europium Nanocomposites

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4244
Author(s):  
Na Yang ◽  
Xiaohua Qi ◽  
Di Yang ◽  
Mengyao Chen ◽  
Yao Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Quantum Information ◽  
Functional Properties ◽  
Cyanate Ester ◽  
Curing Process ◽  
Multiwalled Carbon ◽  
Luminescence Signal ◽  
Cyanate Ester Resin ◽  
Wide Range ◽  
Thermal Stable

Cyanate ester resin (CER) is an excellent thermal stable polymer. However, its mechanical properties are not appropriate for its application, with brittle weakness, and it has poor functional properties, such as luminescence. This work innovatively combines the luminescence property and the improved mechanical properties with the inherent thermal property of cyanate ester. A novel nanocomposite, CER/uMWCNTs/Eu, with multi-functional properties, has been prepared. The results show that with the addition of 0.1 wt.% of uMWCNTs to the resin, the flexural strength and tensile strength increased 59.3% and 49.3%, respectively. As the curing process of the CER progresses, the injected luminescence signal becomes luminescence behind the visible (FBV). The luminescence intensity of CER/uMWCNTs/Eu was much stronger than that of CER/MWCNTs/Eu, and the luminescence lifetime of CER/MWCNTs/Eu and CER/uMWCNTs/Eu was 8.61 μs and 186.39 μs, respectively. FBV exhibited great potential in the embedment of photon quantum information. Therefore, it can be predicted that CER/uMWCNTs/Eu composites will not only have a wide range of applications in sensing, detection, and other aspects, but will also exhibit great potential in the embedding of photon quantum information.

Thermal and mechanical properties of cyanate ester resin modified with acid-treated multiwalled carbon nanotubes

2016 ◽  
Vol 30 (1) ◽  
pp. 38-46 ◽  
Author(s):  
Hongfeng Li ◽  
Jiyou Gu ◽  
Changwei Liu ◽  
Dezhi Wang ◽  
Chunyan Qu
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Plane Strain ◽  
Multiwalled Carbon Nanotubes ◽  
Cyanate Ester ◽  
Resin Matrix ◽  
Resin System ◽  
Multiwalled Carbon ◽  
Cyanate Ester Resin ◽  
Modified Resin

Multiwalled carbon nanotubes (MWCNTs) that were treated with mixed acids were used to reinforce the cyanate ester resin. Meanwhile, the relationship among structure, morphology, and property of the modified resin was investigated. The treated MWCNTs were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, and X-ray photoelectron spectroscopy (XPS). The XPS results showed that the oxygen content in the treated MWCNTs was higher than that of untreated MWCNTs and the FTIR results indicated the presence of oxygen-containing functional groups on the treated MWCNTs. The microstructure of the resin was characterized by scanning electron microscopy and transmission electron microscopy. The results showed that the dispersion properties of the treated MWCNTs in the resin matrix were improved and compared with the untreated analogue. Addition of MWCNTs to the resin had little effect on the thermodynamic properties of the resin system. Upon addition of 0.8 wt% of MWCNTs to the resin, the glass transition temperature of the cured resin changed from 298°C to 285°C, maintaining a relatively high value. For the resins containing 0.6 wt% of treated MWCNTs, the plane strain critical stress intensity factor and plane strain critical strain energy release rate in the system were determined to be 1.39 Pa·m0.5 and 364 J m−2, respectively, and the fracture toughness is increased by 45.7 and 76.0%, respectively. Furthermore, the modified resin system exhibits excellent toughness and thermal properties. Therefore, the modified resin may be suitable for future applications involving high performance composites and adhesives.

Influence of phenoxy addition on the curing kinetics for uncatalyzed and catalyzed cyanate ester resin

2010 ◽  
Vol 118 (5) ◽  
pp. 2869-2880 ◽  
Author(s):  
Pedro M. Remiro ◽  
Koro De La Caba ◽  
Iñaki Mondragon ◽  
Carmen C. Riccardi
Keyword(s):  
Curing Kinetics ◽  
Cyanate Ester ◽  
Cyanate Ester Resin

The Effect of POSS-NH2 on the Curing Reaction of Cyanate Ester Resin

2011 ◽  
Vol 217-218 ◽  
pp. 274-279 ◽  
Author(s):  
Zeng Ping Zhang ◽  
Jian Zhong Pei ◽  
Shuan Fa Chen ◽  
Hong Zhao Du ◽  
Yong Wen
Keyword(s):  
Reaction Mechanisms ◽  
Catalytic Effect ◽  
Curing Kinetics ◽  
Cyanate Ester ◽  
Cyanate Ester Resin ◽  
Curing Reaction ◽  
Ft Ir ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Different Content

A functional POSS monomer (POSS-NH2) was employed to modify cyanate ester (CE) resin. A series of POSS-NH2/CE hybrids containing different content of POSS have been prepared by melt casting and then curing. The curing kinetics and reaction mechanisms of the resin systems were studied by using FT-IR. The experimental results show that both temperature and POSS content may influence the curing reaction of CE. POSS-NH2 mainly displays the catalytic effect at higher temperature (220oC). While the circumstance is more complex at lower temperature (190oC).

scholarly journals Thermally Stable Nanoporous Cyanate Ester Resin/Linear Polyurethane Hybrid Networks Created by Nuclear Technologies

Polymer ◽  
2021 ◽  
pp. 123831
Author(s):  
Olga Grigoryeva ◽  
Alexander Fainleib ◽  
Olga Starostenko ◽  
Kristina Gusakova ◽  
Viktor Sakhno ◽  
...  
Keyword(s):  
Cyanate Ester ◽  
Hybrid Networks ◽  
Thermally Stable ◽  
Cyanate Ester Resin

Modification of Epoxy Resin by Cyanate Ester Resin and Liquid Butadiene-Acrylonitrile Rubbers

2010 ◽  
Vol 49 (8) ◽  
pp. 772-778 ◽  
Author(s):  
Xudong Sun ◽  
Minfeng Zeng ◽  
Cuiyun Lu ◽  
Fengyuan Yan ◽  
Chenze Qi
Keyword(s):  
Epoxy Resin ◽  
Cyanate Ester ◽  
Cyanate Ester Resin
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