On the intumescence of ethylene-acrylate copolymers blended with chalk and silicone

Krämer, Roland H.; Blomqvist, Per; Hees, Patrick Van; Gedde, Ulf W.

doi:10.1016/j.polymdegradstab.2007.06.014

Cited by 29 publications

(25 citation statements)

References 19 publications

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“…6). The formation of ketone was significantly reduced, whereas a new band appeared at 1515 to 1560 cm À1 , which can be assigned to the formation of ion bonds between calcium and carboxylic acid [7] as shown in Schemes 1 and 2. The almost negligible increase in ketone absorption indicates that the reaction with the calcium carbonate particles is the dominant mechanism.…”

Section: Infrared Analysis Of Isothermally Degraded Specimensmentioning

confidence: 96%

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Degradation of poly(ethylene-co-methacrylic acid)–calcium carbonate nanocomposites

Krämer

Raza

Gedde

2007

Polymer Degradation and Stability

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Section: Infrared Analysis Of Isothermally Degraded Specimensmentioning

confidence: 96%

“…The infrared spectroscopy data obtained in this study will serve to judge the state of degradation of samples that were withdrawn from the fire tests. Conclusions on the significance of the formation of calcium ion bonds between polymer and filler for the combustion are presented in the second part of the study [7].…”

Section: Introductionmentioning

confidence: 99%

Degradation of poly(ethylene-co-methacrylic acid)–calcium carbonate nanocomposites

Krämer

Raza

Gedde

2007

Polymer Degradation and Stability

Self Cite

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“…This is, however, not fully reflecting the end-use behaviour where the coating is applied on all sides and covering joints. For this reason a special sample retainer holder, developed within another project was used [28]. This retainer holder still allows the use of a square sample but has an extra steel surface at the sides to protect the sides.…”

Section: Development Of Sample Holdermentioning

confidence: 99%

Use of the Cone Calorimeter and ConeTools software for development of innovative intumescing graphite systems

Hees¹,

Andersson²,

Hjohlman³

et al. 2010

Fire and Materials

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SUMMARYThe Cone Calorimeter test method has been one of the most used small-scale fire test method for years now and is at present widely spread over the world. In contrast to many other fire test methods, the Cone Calorimeter provides a range of data with sound scientific basis, which allows a wide range of applications. It can be used for modelling and also for enhanced product development. This paper describes the use of the Cone Calorimeter for the development of new innovative materials in combination with a mathematical model. As example, the cost effective development of an innovative intumescing graphite system for protecting particle board is explained. The performance goal of the project is to obtain the threshold values for a B class in the Single Burning Item (SBI) test method used for the newly developed Euroclass system. The focus of this paper is on the development tools and not on the chemical development of the protective system. During the research it was necessary to develop a new sample holder for the Cone Calorimeter. The results from the project show that the industry can save development time and resources by using the Cone Calorimeter in combination with a simple mathematical model.

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“…Polymeric formulations based on ethylene acrylate copolymer-silicon-chalk have been developed in the last two decades as an alternative to the halogenated and high load magnesium hydroxide composites for cable insulation and jacket production [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Enhanced fire behavior of Casico-based foams

Realinho

Antunes

Velasco

2016

Polymer Degradation and Stability

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The present work deals with the preparation and characterization of improved fireretardant ethylene-acrylate foams. A commercial formulation, usually employed in the cable industry sector, Casico, was modified using two different synergistic flame retardant (FR) systems: silica/zinc borate micro-sized particles (M) and montmorillonite/graphene nanoplatelets (N). The different composites were prepared by melt-blending and the foams by a compression-molding chemical foaming process (Casico-based foams). All Casico-based foams presented a mainly closed-cell structure.The presence of the nanoparticles system (N) promoted the formation of microcellular foams, with cell sizes lower than 100 µm, and narrow cell distributions. Nevertheless, when both flame retardant systems were added a higher cell collapse was noticed. Due to the foam's Casico-N structure and the presence of the stiff layered nanoparticles an increase of the temperature of β and α relaxations and specific loss modulus was registered for that foam respect to the Casico foam. In a general way, the Casico-based foams presented a thermal decomposition behavior similar to that of unfoamed Casico.Only a slight increase of the thermal stability of the step associated to the ionomer decomposition was observed respect to the Casico. Significant fire behavior improvements were observed for Casico-M-N foam. Specifically, this foam showed the lowest value of PHRR (peak of heat release rate), EHC (effective heat of combustion) and FIGRA (fire index growth rate), having therefore the lowest flammability, even lower than Casico unfoamed material.

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On the intumescence of ethylene-acrylate copolymers blended with chalk and silicone

Cited by 29 publications

References 19 publications

Degradation of poly(ethylene-co-methacrylic acid)–calcium carbonate nanocomposites

Degradation of poly(ethylene-co-methacrylic acid)–calcium carbonate nanocomposites

Use of the Cone Calorimeter and ConeTools software for development of innovative intumescing graphite systems

Enhanced fire behavior of Casico-based foams

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