scholarly journals Anti-flammability, mechanical and thermal properties of bio-based rigid polyurethane foams with the addition of flame retardants

RSC Advances ◽  
2020 ◽  
Vol 10 (53) ◽  
pp. 32156-32161
Author(s):  
Guangyu Zhang ◽  
Xiaoqi Lin ◽  
Qinqin Zhang ◽  
Kaisen Jiang ◽  
Weisheng Chen ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Flame Retardant ◽  
Flame Retardants ◽  
Polyurethane Foams ◽  
Mechanical And Thermal Properties ◽  
Rigid Polyurethane Foams ◽  
Flame Retardant Properties

Bio-based rigid polyurethane foams with the addition of flame retardant exhibit preferable flame-retardant properties.

scholarly journals Effect of flame retardants on mechanical and thermal properties of bio-based polyurethane rigid foams

RSC Advances ◽  
2021 ◽  
Vol 11 (49) ◽  
pp. 30860-30872
Author(s):  
Qirui Gong ◽  
Liangyu Qin ◽  
Liangmin Yang ◽  
Keke Liang ◽  
Niangui Wang
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Flame Retardant ◽  
Vegetable Oil ◽  
Flame Retardants ◽  
Mechanical And Thermal Properties ◽  
Rigid Foam ◽  
Rigid Foams ◽  
Flame Retardant Properties ◽  
Polyurethane Rigid Foam

A vegetable oil-based polyurethane rigid foam containing a phosphorus–nitrogen dualflame retardant system was prepared, and the foam exhibited not only excellent flame retardant properties but also good mechanical properties.

scholarly journals Investigations on Epoxy-Carbamate Foams Modified with Different Flame Retardants for High-Performance Applications

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3893
Author(s):  
Simon T. Kaysser ◽  
Christian Bethke ◽  
Isabel Fernandez Romero ◽  
Angeline Wo Weng Wei ◽  
Christian A. Keun ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Flame Retardant ◽  
High Performance ◽  
Flame Retardants ◽  
Mechanical And Thermal Properties ◽  
Polymeric Foams ◽  
Blowing Agent ◽  
Dual Functional ◽  
Burning Behavior ◽  
Flame Retardant Properties

In transport sectors such as aviation, automotive and railway, materials combining a high lightweight potential with high flame retardant properties are in demand. Polymeric foams are suitable materials as they are lightweight, but often have high flammability. This study focuses on the influence of different flame retardants on the burning behavior of Novolac based epoxy foams using Isophorone Diamine carbamate (B-IPDA) as dual functional curing and blowing agent. The flame retardant properties and possible modifications of these foams are systematically investigated. Multiple flame retardants, representing different flame retardant mechanisms, are used and the effects on the burning behavior as well as mechanical and thermal properties are evaluated. Ammonium polyphosphate (APP), used with a filler degree of 20 wt.% or higher, functions as the best performing flame retardant in this study.

scholarly journals Composites of Rigid Polyurethane Foams Reinforced with POSS

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 336 ◽  
Author(s):  
Sylwia Członka ◽  
Anna Strąkowska ◽  
Krzysztof Strzelec ◽  
Agnieszka Adamus-Włodarczyk ◽  
Agnė Kairytė ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Water Absorption ◽  
Viscoelastic Behavior ◽  
Physical And Mechanical Properties ◽  
Polyurethane Foams ◽  
Bending Test ◽  
Mechanical And Thermal Properties ◽  
Rigid Polyurethane Foams ◽  
Cell Shapes

Rigid polyurethane foams (RPUFs) were successfully modified with different weight ratios (0.5 wt%, 1.5 wt% and 5 wt%) of APIB-POSS and AEAPIB-POSS. The resulting foams were evaluated by their processing parameters, morphology (Scanning Electron Microscopy analysis, SEM), mechanical properties (compressive test, three-point bending test and impact strength), viscoelastic behavior (Dynamic Mechanical Analysis, DMA), thermal properties (Thermogravimetric Analysis, TGA, and thermal conductivity) and application properties (contact angle, water absorption and dimensional analysis). The results showed that the morphology of modified foams is significantly affected by the type of the filler and filler content, which resulted in inhomogeneous, irregular, large cell shapes and further affected the physical and mechanical properties of resulting materials. RPUFs modified with APIB-POSS represent better mechanical and thermal properties compared to the RPUFs modified with AEAPIB-POSS. The results showed that the best results were obtained for RPUFs modified with 0.5 wt% of APIB-POSS. For example, in comparison with unfilled foam, compositions modified with 0.5 wt% of APIB-POSS provide greater compression strength, better flexural strength and lower water absorption.

Preparation and Characterization of Excellent Flame Retarded Rigid Polyurethane Foams

2011 ◽  
Vol 374-377 ◽  
pp. 1563-1566
Author(s):  
An Zhen Zhang ◽  
Yi He Zhang
Keyword(s):  
Flame Retardant ◽  
Flame Retardants ◽  
Polyurethane Foams ◽  
Expandable Graphite ◽  
Dimethyl Methylphosphonate ◽  
Limiting Oxygen Index ◽  
Rigid Polyurethane Foams ◽  
Foaming Process ◽  
Flame Retarded

Rigid polyurethane foams were excellent thermal insulation materials with widely used, which was highly flammable at the same time. In order to obtain safe application, flame retarded polyurethane foams were needed. In this paper, series flame retarded rigid polyurethane foams were prepared with loading different flame retardants such as ammonium polyphosphate, expandable graphite, red phosphorus, Tri (2-chloroethyl) phosphate and dimethyl methylphosphonate. The effects of flame retardants on the foaming-process and flame retardant property of the rigid polyurethane foams were investigated by otary viscometer and limiting oxygen index. The results showed that the combination of solid and liquid flame retardants was necessary to improve the flame retardant and different flame retardants played synergistic roles in rigid polyurethane foams. The limiting oxygen indexes of the foams could be up to 30wt% and 29.6% with 25wt% solid flame retardants and 10wt% liquid retardants, respectively.

scholarly journals Biobased Polyols Using Thiol-Ene Chemistry for Rigid Polyurethane Foams with Enhanced Flame-Retardant Properties

2017 ◽  
Vol 5 (1) ◽  
pp. 1-12 ◽  
Author(s):  
C. K. Ranaweera ◽  
M. Ionescu ◽  
N. Bilic ◽  
X. Wan ◽  
P. K. Kahol ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Flame Retardant Properties
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