Facile fabrication of multifunctional energy-saving building materials with excellent thermal insulation, robust mechanical property and ultrahigh flame retardancy

Lian, Richeng; Ou, Mingyu; Guan, Haocun; Cui, Jiahui; Piao, Junxiu; Feng, Tingting; Ren, Jinyong; Wang, Yaxuan; Wang, Yaofei; Liu, Lei; Chen, Xilei; Jiao, Chuanmei

doi:10.1016/j.energy.2023.127773

Cited by 25 publications

(3 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, high EHC values mostly suggest the action in the condensed phase like charring. 39 From Table 4, the solely addition of GO hardly changed averaged EHC (av-EHC) of the RPVC foams, while CHS increased av-EHC. Metal chlorides as strong Lewis acid, formed from the reaction of CHS with HCl, promoted the charring of RPVC resin.…”

Section: Fire Safety Of Rpvc Foamsmentioning

confidence: 95%

Construction of a copper hydroxystannate functionalized graphene oxide for rigid polyvinyl chloride foam toward improved fire safety

Huang

Wang

2023

Polymers for Advanced Techs

View full text Add to dashboard Cite

A copper hydroxystannate (CHS) functionalized graphene oxide (GO) (CHS@GO) was feasibly prepared through an in‐situ method, and well characterized by TEM, XRD, FTIR and XPS. Rigid poly vinyl chloride (RPVC) foams containing CHS@GO were prepared by utilizing methyl hexahydrophthalic anhydride and isocyanate as coupling agents, azodiisobutyronitrile and azodicarbonamide as blowing agents. The fire safety, mechanical properties and thermal decomposition behavior of the RPVC foams were studied. The RPVC foam containing 2 wt% CHS@GO (RPVC/2CHS@GO) achieved a limiting oxygen index (LOI) of 35.5% and a V0 rating in the UL‐94 tests. The cone calorimetric tests (CCT) results demonstrated the peak heat release rate (pHRR) and total heat release (THR) of RPVC/2CHS@GO were reduced by 40.6% and 36.8%, respectively, compared with those of pure RPVC foam (pure RPVC). The compressive strength and flexural strength of RPVC/2CHS@GO were increased by 47.3% and 34.6%, respectively, in contrast with those of Pure RPVC. The thermogravimetry results showed that CHS@GO endowed the RPVC foams with improved char residue.

show abstract

Section: Fire Safety Of Rpvc Foamsmentioning

confidence: 95%

Construction of a copper hydroxystannate functionalized graphene oxide for rigid polyvinyl chloride foam toward improved fire safety

Huang

Wang

2023

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…Subsequently, as the temperature rises to 300 • C, APP begins to decompose and release NH 3 , which can effectively act as non-combustible gas blocking the supply of oxygen. The decomposition of APP simultaneously generates inorganic acid like poly(phosphoric acid), leading to the formation of P-O-P crosslinking protective carbide layer due to dehydration between poly(phosphoric acid) [70,71]. Meanwhile, poly(phosphoric acid) catalyzes the degradation of PU to produce polyhydric alcohol and undergoes esterification reaction with it, completing the second dehydration reaction to form P-O-C cross-linking structures.…”

Section: Flame Retardant Mechanism For Eg/app/sa/rpufsmentioning

confidence: 99%

Balanced Thermal Insulation, Flame-Retardant and Mechanical Properties of PU Foam Constructed via Cost-Effective EG/APP/SA Ternary Synergistic Modification

Li,

Hou,

Liu

et al. 2024

Polymers

View full text Add to dashboard Cite

To address the challenge of balancing the mechanical, thermal insulation, and flame-retardant properties of building insulation materials, this study presented a facile approach to modify the rigid polyurethane foam composites (RPUFs) via commercial expandable graphite (EG), ammonium polyphosphate (APP), and silica aerogel (SA). The resulting EG/APP/SA/RPUFs exhibited low thermal conductivity close to neat RPUF. However, the compressive strength of the 6EG/2APP/SA/RPUF increased by 49% along with achieving a V-0 flame retardant rating. The residual weight at 700 °C increased from 19.2 wt.% to 30.9 wt.%. Results from cone calorimetry test (CCT) revealed a 9.2% reduction in total heat release (THR) and a 17.5% decrease in total smoke production (TSP). The synergistic flame-retardant mechanism of APP/EG made significant contribution to the excellent flame retardant properties of EG/APP/SA/RPUFs. The addition of SA played a vital role in reducing thermal conductivity and enhancing mechanical performance, effectively compensating for the shortcomings of APP/EG. The cost-effective EG/APP/SA system demonstrates a positive ternary synergistic effect in achieving a balance in RPUFs properties. This study provides a novel strategy aimed at developing affordable building wall insulation material with enhanced safety features.

show abstract

“…Raman spectroscopy can reasonably evaluate the degree of graphitization of materials, thereby determining the stability of carboniza-tion products. [53] As shown in Figure 3c, Raman tests were conducted on MS, CMS, PBA@MS, and CPBA@CMS. Raman spectra of composite sponges were divided into two main peaks, located at ≈1350 and 1580 cm −1 , representing the D and G bands, respectively.…”

Section: Structure and Morphology Of Cpba@cmsmentioning

confidence: 99%

A Low‐Temperature Carbonization Strategy for Efficient Viscous Crude Oil Spill Disposal without Hydrophobic Coating: CoFe‐PBA‐Catalyzed Carbonization of Superhydrophobic Flame Retardant Melamine Sponge

Guan,

Lian,

et al. 2023

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Due to the difficulty of absorbing viscous crude oil, there is an urgent need for carbon sponges with excellent photothermal properties and oil‐water separation capabilities to reduce viscosity and facilitate oil absorption. However, the preparation of high‐temperature carbonization leads to poor mechanical properties, low absorption capacity, and stringent preparation conditions. To solve these challenges, a highly hydrophobic flame‐retardant melamine sponge (CPBA@CMS) is designed by assembling sponge at the interface of cobalt–iron Prussian blue (CoFe‐PBA) derived from metal–organic frameworks (MOFs) and conducting low‐temperature catalytic carbonization under nitrogen. The results demonstrate that CPBA@CMS exhibits excellent superhydrophobic properties (water contact angle = 169.7°) and oil absorption capacity (80.7–219.5 g g−1). Furthermore, CPBA@CMS displays remarkable photothermal effects and thermal conductivity, making it adaptable to various environmental conditions. It can rapidly rise to 141 °C under 1 kW m−2 solar irradiation, with the maximum oil absorption rate reaching 98% and the highest oil absorption capacity at 105.5 g g−1. Additionally, CPBA@CMS shows significant fire safety performance, reducing heat release rate by 84.2%, smoke factor by 97.5%, and CO release rate by 81.4%, respectively. It provides an efficient, safe, and sustainable practical solution for effectively addressing spills of crude oil.

show abstract

Facile fabrication of multifunctional energy-saving building materials with excellent thermal insulation, robust mechanical property and ultrahigh flame retardancy

Cited by 25 publications

References 59 publications

Construction of a copper hydroxystannate functionalized graphene oxide for rigid polyvinyl chloride foam toward improved fire safety

Construction of a copper hydroxystannate functionalized graphene oxide for rigid polyvinyl chloride foam toward improved fire safety

Balanced Thermal Insulation, Flame-Retardant and Mechanical Properties of PU Foam Constructed via Cost-Effective EG/APP/SA Ternary Synergistic Modification

A Low‐Temperature Carbonization Strategy for Efficient Viscous Crude Oil Spill Disposal without Hydrophobic Coating: CoFe‐PBA‐Catalyzed Carbonization of Superhydrophobic Flame Retardant Melamine Sponge

Contact Info

Product

Resources

About