Thermal stability and flammability of polyolefin/halloysite nanotubes composites

Szpilska, K.; Czaja, Krystyna; Kudła, S.

doi:10.14314/polimery.2015.673

Cited by 18 publications

(13 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Almost all polymers can be mechanically reinforced by HNTs, even at a low content (normally less than 5.0 wt.%) [105]. HNT may improve the flame retardancy of polymers mainly through physical action such as a barrier against the transport of heat and oxygen [106,107]. In the past work, HNT was widely used as a kind of effective flame retardant in different polymers such as poly (butylene succinate) (PBS) [108], PP [109], polyurethane [110], polyamide 6 [111], epoxy [112], etc.…”

Section: Nano Flame Retardantsmentioning

confidence: 99%

Flame Retardation of Natural Rubber: Strategy and Recent Progress

et al. 2020

View full text Add to dashboard Cite

Natural rubber (NR) as a kind of commercial polymer or engineering elastomer is widely used in tires, dampers, suspension elements, etc., because of its unique overall performance. For some NR products, their work environment is extremely harsh, facing a serious fire safety challenge. Accordingly, it is important and necessary to endow NR with flame retardancy via different strategies. Until now, different methods have been used to improve the flame retardancy of NR, mainly including intrinsic flame retardation through the incorporation of some flame-retarding units into polymer chains and additive-type flame retardation via adding some halogen or halogen-free flame retardants into NR matrix. For them, the synergistic flame-retarding action is usually applied to simultaneously enhance flame retardancy and mechanical properties, in which some synergistic flame retardants such as organo-montmorillonite (OMMT), carbon materials, halloysite nanotube (HNT), etc., are utilized to achieve the above-mentioned aim. The used flame-retarding units in polymer chains for intrinsic flame retardation mainly include phosphorus-containing small molecules, an unsaturated chemical bonds-containing structure, a cross-linking structure, etc.; flame retardants in additive-type flame retardation contain organic and inorganic flame retardants, such as magnesium hydroxide, aluminum hydroxide, ammonium polyphosphate, and so on. Concerning the flame retardation of NR, great progress has been made in the past work. To achieve the comprehensive understanding for the strategy and recent progress in the flame retardation of NR, we thoroughly analyze and discuss the past and current flame-retardant strategies and the obtained progress in the flame-retarding NR field in this review, and a brief prospect for the flame retardation of NR is also presented.

show abstract

Section: Nano Flame Retardantsmentioning

confidence: 99%

Flame Retardation of Natural Rubber: Strategy and Recent Progress

et al. 2020

View full text Add to dashboard Cite

show abstract

“…w przemyśle elektronicznym, elektrochemicznym i optycznym. Dotychczas przeprowadzono badania właściwości mechanicznych kompozytów z haloizytem, szczególnie modyfikowanym, na osnowie różnych polimerów [11][12][13][14] . Dla poprawienia i ujednorodnienia kompozycji wskazane jest zastosowanie wytłaczarek dwuślimakowych, które charakteryzują się określonymi właściwościami dyspersyjno-dystrybutywnymi, zapewniającymi prawidłowe ujednorodnienie kompozycji.…”

Section: Low D Polyethylene Doped With Halloysite Nanotubes (Diam 3unclassified

Studium wytłaczania polietylenu z dodatkiem nanorurek haloizytowych. Cz. I. Charakterystyka procesu wytłaczania

Głogowska¹

2019

CHEMICAL REVIEW

View full text Add to dashboard Cite

obrotowej ślimaka na parametry wytłaczania. Największą wydajność procesu (ponad 39,6%) osiągnięto podczas wytłaczania polimeru nienapełnionego przy prędkości ślimaka 150 rpm. Wydajność nieznacznie spadała (do 39,1%) wraz ze wzrostem zawartości nanorurek. Najmniejszą wartość jednostkowego zużycia energii osiągnięto przy wytłaczaniu (150 rpm) materiału zawierającego 2% haloizytu. Zastosowanie prędkości obrotowej ślimaka 50 rpm spowodowało znaczne zmniejszenie wydajności wytłaczania oraz znaczny wzrost jednostkowego zużycia energii dla badanych materiałów. Zagadnienie efektywności procesu wytłaczania tworzyw polimerowych rozumiane jako prowadzenie procesu z największą wydajnością, najmniejszym jednostkowym zużyciem energii, największą sprawnością energetyczną oraz najlepszą homogenizacją cieplną i mechaniczną tworzywa nie jest do końca poznane, choć wiele aspektów jest już wyjaśnionych. Jednak, odnosząc je do kompozytów polimerowych, w szczególności napełnionych nanonapełniaczami, należy stwierdzić, że informacje na ten temat są jeszcze niewystarczające. Wytłaczanie jest jedną z podstawowych metod produkcji w przetwórstwie materiałów polimerowych, a także w produkcji żywności

show abstract

“…The small amount of filler, in the order of several weight percent, should allow the use of this composite type for cable sheathing as well as for the conductor insulation in which the minimization of larger inhomogeneities is essential due to the interaction of the material with an electric field. The advanced filler which can positively influence the flame retardancy of conventional polymers (e.g., polyolefins), even if only a few weight percent of well-dispersed filler is used, is halloysite in a tubular form (halloysite nanotubes) [3].…”

Section: Increasing Of Cable Insulation Durability In Briefmentioning

confidence: 99%

“…The used linear low-density polyethylene was produced as a copolymer of ethylene with 1-hexene and is characterized by a density of 926 kg/m 3…”

Section: Description Of Tested Materialsmentioning

confidence: 99%

Influence of Uv Radiation on Dielectric Absorption and Dielectric Strength of Halloysite Nanotubes Filled Polyethylene Composites

Kadlec¹,

Polanský²

2019

AEI

View full text Add to dashboard Cite

This paper deals with the evaluation of the amount of filler influence and the ultraviolet (UV) radiation influence on selected dielectric properties of the innovative type of composites. These composites consist of a linear low-density polyethylene matrix and a clay filler (with different filling levels) that contains halloysite nanotubes (HNT) primarily. The intended application of tested composites in the field of electrical engineering is in insulating systems of power cables. Attention is paid to the analysis of the behaviour of composites in their charging, which is caused by the connection with the direct voltage source. The volume resistivity and polarization indexes are determined based on this analysis. Analysis of charging based on the measurement of the current, which flows through the sample under constant applied voltage, is supplemented with the short evaluation of the material behaviour after the disconnecting of the voltage source and after the electrode shorting when the material is discharged. Furthermore, the measurement of dielectric strength under an alternating electric field as another key parameter of electrical insulating materials is determined. Results of analyses of absorption and resorption processes and the dielectric strength measurement of materials in the delivered state prove a significant effect of the filler percentage in the composite. Subsequently, markedly different values of selected parameters because of material exposure to UV radiation are also determined. Observed changes in dielectric properties caused by UV irradiation are supported by the analysis of the chemical structure of materials via Fourier transform infrared spectroscopy.

show abstract

Thermal stability and flammability of polyolefin/halloysite nanotubes composites

Cited by 18 publications

References 1 publication

Flame Retardation of Natural Rubber: Strategy and Recent Progress

Flame Retardation of Natural Rubber: Strategy and Recent Progress

Studium wytłaczania polietylenu z dodatkiem nanorurek haloizytowych. Cz. I. Charakterystyka procesu wytłaczania

Influence of Uv Radiation on Dielectric Absorption and Dielectric Strength of Halloysite Nanotubes Filled Polyethylene Composites

Contact Info

Product

Resources

About