Analysis of curing behavior of endo-dicyclopentadiene using different amounts of decelerator solution

Yoo, Hyeong Min; Jeon, Ji Ho; Li, Meixian; Lee, Woo Il; Choi, Sung Woong

doi:10.1016/j.compositesb.2018.12.068

Cited by 15 publications

(11 citation statements)

References 22 publications

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“…% (Triphenylphosphine, 95%, Sigma-Aldrich). This was found to be a suitable range for the amount of DCPD in our previous study [17]. With different amounts of decelerator, endo-DCPD monomer mixed with the catalyst.…”

Section: Methodsmentioning

confidence: 98%

“…Furthermore, additional studies examining the effect of the catalysts resulting from the addition of a decelerator to the DCPD should be conducted to ensure material reliability under various operating conditions. Our previous study on DCPD with different decelerator solutions was carried out to obtain curing kinetics with decelerator effects [17].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Cryogenic Impact Properties for a Glass-Fiber-Reinforced Dicyclopentadiene with a Different Amount of Decelerator Solution

et al. 2019

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Composites using dicyclopentadiene (DCPD) as a matrix have gained significant popularity owing to their excellent impact and chemical corrosion resistance. In the present study, experiments addressing the impact behavior of glass-fiber-reinforced DCPD were conducted to quantitatively evaluate its impact properties. The glass-fiber-reinforced polydicyclopentadiene composite utilized in impact tests was manufactured using structural reaction injection molding (S-RIM) because of its fast curing characteristics and low viscosity. The impact properties of the glass-fiber-reinforced DCPD (GF/DCPD) were quantitatively evaluated by varying its fiber content and decelerator solution. The impact properties of neat DCPD and GF/DCPD composites were examined with different amounts of decelerator solution under various temperatures from room temperature to cryogenic temperature to observe the ductile-to-brittle transition temperature (DBTT). With an increase in the fiber weight fraction of the GF/DCPD composite, the effect of the DBTT significantly decreased. However, the decreasing rate retarded as the weight fraction of the GF increased. The decreased DBTT with the addition of GF in the GF/DCPD can be attributed to the differences in the thermal expansion ratio and the interfacial force between neat DCPD and the fiber. A fractograph analysis demonstrates that the effect of the brittle (smooth) surface resulted in a lower impact absorbed energy when the temperature decreased, along with the increased amount of the decelerator.

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Section: Methodsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Analysis of Cryogenic Impact Properties for a Glass-Fiber-Reinforced Dicyclopentadiene with a Different Amount of Decelerator Solution

et al. 2019

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“…The literature contains many examples of self-dual Leonard pairs. For instance (i) the ated with an irreducible module for the Terwilliger algebra of the hypercube (see [4, Corol Leonard pair of Krawtchouk type (see [10, De nition 6.1]); (iii) the Leonard pair associated module for the Terwilliger algebra of a distance-regular graph that has a spin model in th bra (see [1,Theorem], [3,Theorems 4.1, 5.5]); (iv) an appropriately normalized totally bip (see [11,Lemma 14.8]); (v) the Leonard pair consisting of any two of a modular Leonard t De nition 1.4]); (vi) the Leonard pair consisting of a pair of opposite generators for the bra, acting on an evaluation module (see [5,Proposition 9.2]). The example (i) is a special examples (iii), (iv) are special cases of (v).…”

Section: Introductionmentioning

confidence: 99%

“…However, investigations on correlating the impact behavior of CF/p-DCPD composites are limited. It is with this view that the present study on the impact properties of CF/p-DCPD composites manufactured with liquid composite molding process has been undertaken, especially for the improvement of mechanical properties of CF/p-DCPD composites (3,11).…”

Section: Introductionmentioning

confidence: 99%

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Impact and shear properties of carbon fabric/ poly-dicyclopentadiene composites manufactured by vacuum‐assisted resin transfer molding

Yoo

Kim

et al. 2019

E-Polymers

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Dicyclopentadiene (DCPD) resin has gained popularity owing to its fast curing time and ease of processing with a low viscosity in the monomer state. In the present study, the impact and shear properties of a carbon fiber (CF)/p-DCPD composite were investigated. The CF/p-DCPD composite was manufactured by vacuum-assisted resin transfer molding with CF as the reinforcement and p-DCPD as the resin with a maximum fiber volume fraction of 55 weight percent. Impact and shear properties of the CF/p-DCPD composite were evaluated and compared with those of a CF/Epoxy composite. The maximum shear stress and modulus of the CF/p-DCPD composite were lower than that of the CF/Epoxy composite. However, the CF/p-DCPD composite had higher toughness than that of the CF/Epoxy composite; this indicates that it is tougher and exhibits a more ductile load-displacement response with a lower modulus and larger failure deformation. The impact strength of the CF/p-DCPD composite was about three time that of the CF/Epoxy composite. The higher impact strength of the CF/p-DCPD composite is attributed to the resin characteristics: epoxy resin has a more brittle behavior, and hence, higher energy is required for crack propagation due to fracture.

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Dispersion of soybean flour in dicyclopentadiene resin for thermoset composite using the ultrasonic‐assisted method

Zhang

Thakur

et al. 2022

Polymer Composites

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Thermosetting composites based on dicyclopentadiene (DCPD) in the presence of Grubbs' catalyst and soybean flour were prepared by ring‐opening metathesis polymerization. Soybean flour/DCPD suspensions were sonicated to enhance the dispersion degree before adding catalyst. The curing extent, thermal‐mechanical properties, morphology and thermal stability of the cured soybean flour/DCPD composites were systematically investigated using Soxhlet extraction, DSC, DMA, TMA, tensile test, SEM, and TGA. The results showed that the tensile strength of the soybean flour/DCPD composites increased from 60.7 MPa to 75.8 MPa with the increase of soybean flour loading from 0% to 25%, and the Tg obtained from DMA also showed an increasing trend from 129.4°C to 155.1°C. Overall, the introduction of soybean flour into DCPD resin improved the thermal‐mechanical properties of the composite and offered decreased cost and enhanced bio‐based content.

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Analysis of curing behavior of endo-dicyclopentadiene using different amounts of decelerator solution

Cited by 15 publications

References 22 publications

Analysis of Cryogenic Impact Properties for a Glass-Fiber-Reinforced Dicyclopentadiene with a Different Amount of Decelerator Solution

Analysis of Cryogenic Impact Properties for a Glass-Fiber-Reinforced Dicyclopentadiene with a Different Amount of Decelerator Solution

Impact and shear properties of carbon fabric/ poly-dicyclopentadiene composites manufactured by vacuum‐assisted resin transfer molding

Dispersion of soybean flour in dicyclopentadiene resin for thermoset composite using the ultrasonic‐assisted method

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