Increased storage stability of marble adhesive based on unsaturated polyester resin

Taheri, Maryam; Jahanfar, Mehdi; Oginö, Kazuhíde

doi:10.1016/j.ijadhadh.2023.103331

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…One is that the C=C peak weakened, indicating that there is less dispersion of uncured domains in the sample. The second is the weakening of the characteristic peak at 777 cm −1 due to the out‐of‐plane bending vibration of C–H on the benzene ring 66 . The reason is that most of the C=C of UP monomers are involved in the cross‐linking reaction and styrene volatilization during the curing process of UPR 15 .…”

Section: Resultsmentioning

confidence: 99%

“…The second is the weakening of the characteristic peak at 777 cm À1 due to the out-of-plane bending vibration of C-H on the benzene ring. 66 The reason is that most of the C=C of UP monomers are involved in the cross-linking reaction and styrene volatilization during the curing process of UPR. 15 As shown in Table 2, the β of the G-x-Mid (X = 1,2,3,4) increased sequentially.…”

Section: Curing Properties Of High-filled Upr/caco 3 Compositesmentioning

confidence: 99%

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Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites

Liu,

et al. 2023

Polymer Composites

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The preparation of high‐filled composites by compounding with calcium carbonate (CaCO3) and polymer has received much attention. However, challenges such as enhancing the interaction between CaCO3 and the polymer and improving the performance of the resulting composites need to be addressed. In this paper, composites with a high filler content were made by adding fillers of various CaCO3 gradations into unsaturated polyester resin (UPR). The mechanical properties, curing degree, component distribution, and structural phases of resulting blends were analyzed by a universal testing machine, differential scanning calorimeter, Raman, and scanning electron microscope/energy‐dispersive x‐ray spectroscopy (EDX), respectively. Based on the research findings, optimizing the CaCO3 gradation significantly increased the strength of the resulting blends. The average flexural strength increased by 343.5%, while the average compressive strength increased by 888.9%. The composites with an optimized gradation of filler showed a significant reduction in uncured domains, leading to an improvement in the curing degree of the composites. The interfacial defects between the optimized graded CaCO3 filler and the UPR were reduced, resulting in a uniform distribution with no visible interface. The Raman and EDX analyses show that the gradation optimization technique has successfully prevented structural phase separation and enhanced the tendency to agglomerate between CaCO3 and UPR. This study proposes an effective method for developing high‐performance UPR/CaCO3 composites with a high filler content.Highlights The optimized gradation of CaCO3 was used as filler to address the weak interaction of CaCO3 with the UPR in a high‐filled UPR/CaCO3 composite system while improving the performance of the composite. The gradation optimization of CaCO3 filler can improve the morphology and reduce the porosity of the high‐filled UPR composites. The gradation optimization of CaCO3 filler can effectively improve the curing effect of UPR. Optimizing the CaCO3 gradation resulted in a significant increase in the average flexural strength (by 343.5%) and average compressive strength (by 888.9%) of the resulting blends.

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Section: Resultsmentioning

confidence: 99%

Section: Curing Properties Of High-filled Upr/caco 3 Compositesmentioning

confidence: 99%

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites

Liu,

et al. 2023

Polymer Composites

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“…Among different curing processes of UPR at different temperatures, there were three different types of initiators, which were low-temperature (40–70 °C) initiators [ 4 , 12 , 13 , 14 , 15 ], medium-temperature (70–130 °C) initiators [ 16 , 17 , 18 , 19 ], and high-temperature (≥130 °C) initiators [ 20 , 21 , 22 , 23 ]. Regarding commercial low-temperature initiators, there are cyclohexanone peroxide (CYHP), methyl ethyl ketone peroxide (MEKP), and benzoyl peroxide (BPO), which were applied together with accelerators [ 12 , 24 ]. Regarding medium-temperature initiators, tert-butyl peroxy-2-ethylhexanoate (TBPO) and benzoyl peroxide (BPO) are the two typical examples [ 16 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Low-Density Unsaturated Polyester Resin with the Presence of Dual-Initiator

2023

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Dual-initiation is a new orientation of many studies in the curing of unsaturated polyester resin and the manufacture of low-density unsaturated polyester resin (LDUPR) composite materials. In our research, two kinds of low-temperature (40–70 °C) initiators (cyclohexanone peroxide (CYHP) and methyl ethyl ketone peroxide (MEKP)), one kind of medium-temperature (70–130 °C) initiator (tert-butyl peroxy-2-ethylhexanoate (TBPO)), and three kinds of high-temperature (≥130 °C) initiators (tert-butyl benzoate peroxide (TBPB), tert-amyl carbonate peroxide-2-ethylhexanoate (TAEC), and tert-butyl carbonate peroxide-2-ethylhexanoate (TBEC)) were applied to constitute different dual-initiators. Those dual-initiators were a low-temperature dual-initiator (CYHP/MEKP), medium-low-temperature dual-initiators (CYHP/TBPO and MEKP/TBPO), and high-temperature dual-initiators (TAEC/TBPB, TAEC/TBEC, and TBEC/TBPB). In the low-temperature and medium-low-temperature ranges, the LDUPR sample displayed the highest specific compression strength (Ps) of 42.08 ± 0.26 MPa·g−1·cm3 in the presence of the MEKP/TBPO dual-initiator. In the high-temperature range, the LDUPR sample exhibited the highest specific compression strength (Ps) of 43.32 ± 0.45 MPa·g−1·cm3 for the existence of the TAEC/TBPB dual-initiator. It is pointed out that the dual-initiator released more active free radicals, accelerating the initial curing time and the peak time of UPR. More active free radicals caused both high-activity (short-chain) molecules and low-activity (long-chain or intertwined) molecules in resin to cross-link, prolonging UPR’s curing process by approximately two minutes and resulting in an improvement of UPR’s cross-linking. In the presence of a dual-initiator, the integrated and planar microstructure of LDUPR samples performed uniformly distributed dimples, dispersed external forces, and enhanced samples’ specific compressive strength.

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Water-responsive entangled underwater adhesives enable strong adhesion in natural dynamic water

Li,

Sun,

Dou

et al. 2024

Chemical Engineering Journal

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Increased storage stability of marble adhesive based on unsaturated polyester resin

Cited by 3 publications

References 16 publications

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites

Low-Density Unsaturated Polyester Resin with the Presence of Dual-Initiator

Water-responsive entangled underwater adhesives enable strong adhesion in natural dynamic water

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Increased storage stability of marble adhesive based on unsaturated polyester resin

Cited by 3 publications

References 16 publications

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO3 composites

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO3 composites

Low-Density Unsaturated Polyester Resin with the Presence of Dual-Initiator

Water-responsive entangled underwater adhesives enable strong adhesion in natural dynamic water

Contact Info

Product

Resources

About

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites