Synergistic effect of silica aerogels and hollow glass microspheres on microstructure and thermal properties of rigid polyurethane foam

Hou, Longtao; Li, Hongfu; Liu, Yunpeng; Niu, Kangmin; Shi, Zhipeng; Liang, Linyun; Yao, Zhiyu; Liu, Chunhui; Tian, Dangxin

doi:10.1016/j.jnoncrysol.2022.121753

Cited by 20 publications

(15 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As expected, the SFP and SFP/LG filler, regardless of the amount added, increased the apparent density of the resulting PUR foam composites with and without TCPP compared to the control PUR foam (SFP-0 and SFP-0/TCPP). Such an increase for the PUR foam composites was also confirmed by numerous studies [ 32 , 33 , 34 ]; however, an interesting observation was made regarding the LG-modified SFP filler. Compared to the PUR foam composites with an SFP filler (SFP and SFP/TCPP), the SFP/LG and SFP/LG/TCPP composites had a lower apparent density.…”

Section: Resultssupporting

confidence: 69%

Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance

et al. 2022

View full text Add to dashboard Cite

Polyurethane (PUR) foams are some of the most promising thermal insulating materials because of their high flammability, but further applications are limited. Therefore, the development of flame-retardant materials with sufficient strength characteristics, water resistance, and low thermal insulating properties is of great importance to the modern building industry. This study evaluates the possibility of a vacuum-based liquid glass (LG) infusion into bio-based fillers, in this case, sunflower press cake (SFP) particles, to improve the mechanical performance, water absorption, thermal insulation, ignitability, thermal stability, and flame retardancy of the resulting polyurethane (PUR) foam composites. The main findings show that LG slightly improves the thermal stability and highly contributes to the ignitability and flame retardancy of the resulting products. Most importantly, from 10 wt.% to 30 wt.%, the SFP/LG filler reduces the thermal conductivity and water absorption values by up to 20% and 50%, respectively, and increases the compressive strength by up to 110%. The results obtained indicate that the proposed SFP/LG filler-modified PUR foam composites are suitable for applications as thermal insulation materials in building structures.

show abstract

Section: Resultssupporting

confidence: 69%

Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance

et al. 2022

View full text Add to dashboard Cite

show abstract

“…To conclude, the observed compressive properties of the composite insulations in the current study were in good agreement with those reported for bio-based composites containing clay [41,42] or biochar [31,43]. Besides, they were in line with the compressive properties of the expanded polystyrene foam [38,44,45], as well as polyurethane foam [46,47], making them potential candidates for insulated packaging materials.…”

Section: Mechanical Resiliencesupporting

confidence: 90%

Water-resistant gum-based phase change composite for thermo-regulating insulation packaging

Baniasadi

Seppälä

Kankkunen

et al. 2023

Journal of Energy Storage

View full text Add to dashboard Cite

“…From Figure 6 it can be seen that in air atmosphere, the decomposition reaction of RPUF basically does not occur when the temperature is below 100°C, and no small molecule product escapes. When the temperature exceeds 100°C, the absorption peak of the ether bond (COC) can be observed in the spectrum 21–23 . And when the temperature reaches 200°C, H 2 O (3600 cm −1 , 3500 cm −1 ), CO 2 (2340 cm −1 , 669 cm −1 ) and CO (2100 cm −1 ) are gradually generated 24–27 .…”

Section: Resultsmentioning

confidence: 99%

“…When the temperature exceeds 100 C, the absorption peak of the ether bond ( C O C ) can be observed in the spectrum. [21][22][23] And when the temperature reaches 200 C, H 2 O (3600 cm À1 , 3500 cm À1 ), CO 2 (2340 cm À1 , 669 cm À1 ) and CO (2100 cm À1 ) are gradually generated. [24][25][26][27] With the increase of the temperature, the polyurethane macromolecules continue to decompose, and the volatile small molecule products also gradually increase.…”

Section: Ftir Analysismentioning

confidence: 99%

Study of failure behaviors of rigid polyurethane foam treated under thermal and vibration conditions by experiment and numerical simulation

Qiu

2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Failure mechanism of rigid polyurethane foam (RPUF) treated under different conditions was studied by means of experiments and numerical simulation. Thermal degradation mechanism of RPUF under different temperatures was characterized by thermogravimetric analysis‐Fourier transform infrared spectrometry coupled with gas chromatography–mass spectrometry (TG‐FTIR‐GC–MS) in air and nitrogen atmosphere, respectively. And the vibration failure mechanism of RPUF was analyzed by finite element analysis (FEA) and extended finite element method (XFEM). The experimental results indicated that the failure mode in nitrogen was the broken of carbamate groups, and in air was the broken of carbamate groups and the radical decomposition of ether groups. Numerical simulation suggested that there was vibration stress concentration in the center of foam prism, which was easy to produce sliding and opening fatigue cracks during random vibration.

show abstract

Synergistic effect of silica aerogels and hollow glass microspheres on microstructure and thermal properties of rigid polyurethane foam

Cited by 20 publications

References 78 publications

Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance

Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance

Water-resistant gum-based phase change composite for thermo-regulating insulation packaging

Study of failure behaviors of rigid polyurethane foam treated under thermal and vibration conditions by experiment and numerical simulation

Contact Info

Product

Resources

About