Effects of hydrotalcite on rigid polyurethane foam composites containing a fire retarding agent: compressive stress, combustion resistance, sound absorption, and electromagnetic shielding effectiveness

Peng, Hao‐Kai; Wang, Xiao Xiao; Li, Ting‐Ting; Huang, Shih‐Yu; Lin, Qi; Shiu, Bing‐Chiuan; Lou, Ching‐Wen; Lin, Jia‐Horng

doi:10.1039/c8ra06361c

Cited by 16 publications

(9 citation statements)

References 50 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, 5 wt% of zeolite is the optimal parameter, the rigid foam composites has the optimal compression resistance due to a small cell size and the evenly distributed cells. The result obtained is similar to the results of our previous experiment on the effect of experimental hydrotalcite on rigid polyurethane foams …”

Section: Resultssupporting

confidence: 90%

Preparation and property evaluations of zeolite rigid foam composites

Wang

Peng

et al. 2019

Polymer Composites

View full text Add to dashboard Cite

Polyether polyol, isocyanate, and a flame retardant (10 wt%), zeolite (0 wt%, 1 wt%, 3 wt%, 5 wt%, 7 wt%, and 9 wt%) are used to form the rigid polyurethane (PU) foam, while a nylon nonwoven fabrics (400 g/m 2 ) and a polyester aluminum foil are combined to serve as the panel. The rigid PU foam and the panel are combined to form the rigid foam composites. The cell structure, compressive stress, combustion resistance, thermal stability, thermal conductivity, sound absorption, and electromagnetic shielding effectiveness (EMSE) of the rigid foam composites are evaluated, examining the effects of using flame retardant agent and zeolite. When the zeolite is 5 wt%, the rigid foam composites have an optimal density of 0.172 g/cm 3 , an average cell size of 0.2131 mm, a maximum compressive stress of 460.03Kpa, an optimal LOI of 28, and optimal EMSE of 40 dB, and the maximum thermal stability, thermal insulation, and sound absorption. K E Y W O R D S flame retardance, polyurethanes, thermogravimetric analysis (TGA), zeolites

show abstract

Section: Resultssupporting

confidence: 90%

Preparation and property evaluations of zeolite rigid foam composites

Wang

Peng

et al. 2019

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…The deterioration of mechanical properties with additives is mentioned in some studies in the literature [2,[5][6][7]. Mechanical properties are generally dependent on density and cellular structure [8]. In this study, composite foams were produced in closed mold to keep the densities equal.…”

Section: Resultsmentioning

confidence: 99%

Effects of Ammonium Polyphosphate/Melamine Additions on Mechanical, Thermal and Burning Properties of Rigid Polyurethane Foams

Yurtseven

2019

Acta Phys. Pol. A

View full text Add to dashboard Cite

Rigid polyurethane foams are widely used as thermal insulation materials. However, the foams have fairly poor fire performance. Therefore, different flame retardants are used to enhance the fire resistance of the foams. Meanwhile, it should be pointed out that flame retardant additions into the foams may deteriorate the thermal and mechanical properties of the foams. In this study, intumescent flame retardants are synthesized by using ammonium polyphosphate/melamine in different ratios, namely 3/1, 2/1 and 1/1. The flame retardants were added into the rigid polyurethane foams in 10 wt%. The thermal conductivity, compressive strength, thermogravimetric analysis and UL 94 burning characteristics of the foams were determined and compared. As a result of the experiments, it was found that the best fire resistance can be satisfied with ammonium polyphosphate/melamine (3/1) addition. However, there were slightly increasing in thermal conductivity and decreasing in compressive strength of the foam.

show abstract

“…By applying ASTM D4935 test setup, the sandwich composite material reached 45 dB in the range of 600 MHz up to 2.5 GHz. Samples made by pure PUR barely reached 10 dB which is reasonable, given the fact that PUR is naturally an insulator [17]. By applying in situ polymerization method, Nina Joseph et al developed flexible films of materials based on nanofibers of polyaniline and graphite on nylon and cotton fabric supports.…”

Section: Composites Used In Shielding Applicationmentioning

confidence: 96%

A Review over Electromagnetic Shielding Effectiveness of Composite Materials

Afilipoaei

Teodorescu-Draghicescu

2020

The 14th International Conference on Interdisciplinarity in Engineering—INTER-Eng 2020

View full text Add to dashboard Cite

The aim of this paper is to review and compare the response to the electromagnetic radiation of different structural or non-structural composites on absorption, reflections and re-reflection grades. The area of interest has been reduced to the carbon allotropy and conducting non-magnetic/magnetic fillers (inclusions, metallic powders, granular ferrites) in dielectric hosts characterized by existing mixing rules. The results could be grouped in distinctive ranges, SE ≤ 10 dB corresponding to a poor shielding, 10–30 dB describing an acceptable effectiveness and SE ≥ 30 dB exceeding the acceptable range for industrial and commercial applications of 20 dB.

show abstract

Effects of hydrotalcite on rigid polyurethane foam composites containing a fire retarding agent: compressive stress, combustion resistance, sound absorption, and electromagnetic shielding effectiveness

Abstract: The synthesis of rigid polyurethane foam.

Cited by 16 publications

References 50 publications

Preparation and property evaluations of zeolite rigid foam composites

Preparation and property evaluations of zeolite rigid foam composites

Effects of Ammonium Polyphosphate/Melamine Additions on Mechanical, Thermal and Burning Properties of Rigid Polyurethane Foams

A Review over Electromagnetic Shielding Effectiveness of Composite Materials

Contact Info

Product

Resources

About