Investigation of the setting of polyamide fibre/latex-filled plaster composites

Eve, S.; Gomina, Moussa; Hamel, J.; Orange, G.

doi:10.1016/j.jeurceramsoc.2005.07.063

Cited by 27 publications

(18 citation statements)

References 17 publications

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“…We also aim to study the effect of polypropylene fibers on the mechanical properties of those elements. Several different types of fibers such as polypropylene fiber, polyamide fiber, and glass fiber have been extensively used in gypsum boards because of their specific advantages (16)(17)(18), although no results have been reported on the use of both polyurethane and polymeric fibers. The challenge is to manufacture lightweight gypsum plasterboard for use in the construction industry, thereby improving the thermal properties of these traditional materials and, at the same time, recycling polymer wastes, which would otherwise be dumped in landfill sites.…”

Section: Introductionmentioning

confidence: 99%

Characterization of gypsum plasterboard with polyurethane foam waste reinforced with polypropylene fibers

et al. 2016

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Gypsum plasterboard that incorporates various combinations of polyurethane foam waste and polypropylene fibers in its matrix is studied. The prefabricated material was characterized in a series of standardized tests: bulk density, maximum breaking load under flexion stress, total water absorption, surface hardness, thermal properties, and reaction to fire performance. Polypropylene fibers were added to the polyurethane gypsum composites to improve the mechanical behavior of the plasterboard under loading. The results indicate that increased quantities of polymer waste led to significant reductions in the weight/surface ratio, the mechanical strength and the surface hardness of the gypsum, as well as improving its thermal resistance. The polypropylene fibers showed good adhesion to the polymer and the gypsum matrix, which enhanced the mechanical performance and the absorption capacity of these compounds. The non-combustibility test demonstrated the potential of the new material for use in internal linings. RESUMEN: Caracterización de placas de yeso con residuos de espuma de poliuretano reforzadas con fibras de polipropileno.Este artículo presenta un estudio experimental basado en la reutilización de residuos de poliuretano en una matriz de yeso para elaborar una placa de yeso laminado. Las placas fueron caracterizadas mediante los ensayos normalizados de densidad aparente, carga de rotura máxima a flexión, absorción total de agua, dureza superficial y reacción al fuego. Se han introducido fibras de polipropileno en la matriz con el objetivo de aumentar la resistencia mecánica del material. Los resultados muestran que el incremento de residuo polimérico en el material implica importantes reducciones de peso, resistencia mecánica y dureza superficial, a la par que se mejora su resistencia térmica consiguiéndose valores similares a los comerciales. Las fibras de polipropileno mostraron una buena adhesión con el polímero, mejorando el comportamiento mecánico y la capacidad de absorción. El ensayo de reacción al fuego confirmó que los residuos de poliuretano pueden ser empleados en la fabricación de placas de yeso laminado en cumplimiento con la normativa.

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Section: Introductionmentioning

confidence: 99%

Characterization of gypsum plasterboard with polyurethane foam waste reinforced with polypropylene fibers

et al. 2016

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“…As existence of gypsum defects due to its nature, additives were frequently used for commercial applications. For example, latexes, epoxy formulations and compounded polymer were blended to improve flexural and compressive strength [1,2] , fibers and latexes were used to reduce total swelling [3] , water repelling agents or hydraulic binders were added to lower the higher detrimental water adsorption [4][5][6][7][8] . Additionally, it was reported that, the calcium sulphate scale may lower the heat transfer coefficient of the apparatus or reduce the thermal efficiency in heat exchangers, desalination evaporators [9] , and petroleum engineering [10] .…”

Section: Introductionmentioning

confidence: 99%

Effect of compounding of sodium tripolyphosphate and super plasticizers on the hydration of α-calcium sulfate hemihydrate

Pan

Wang

2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The inhibition and its mechanism of sodium tripolyphosphate (STP) composited with super plasticizers (SPs) on hydration of α-calcium sulfate hemihydrate were studied by setting time, strength, hydration heat, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electronic probe micro analysis (EPMA), scanning electron microscopy (SEM) and differential scanning calorimeter (DSC) measurements. The experimental results show that compared with STP addition, compositing STP with polycarboxylate (PC) plasticizer, the fi nal setting time is prolonged from 0.5h to 2hs. While formulating STP with naphthalene-based plasticizer (NAP) or sulfonate melamine formaldehyde plasticizer (SMF), the fi nal setting time is reduced to quarter of an hour. Similar changes can also be found in the rate of exothermic hydration and hydration degree. Formulating STP with suitable addition of PC can enhance the strength, while compositing STP and NAP or SMF weakens the strength. Besides, adding STP or STP and SMF, obvious movement (more than 1ev) of binding energy of Ca2p1/2 and Ca2p3/2 is detected. Compared with STP addition, content of the characteristic element (P) of STP is cut down form 1.1% to 0.49% by compositing STP with SMF. Furthermore, as hydration age increases, hydration inhibition in the presence of admixtures weakens and even disappears within 56 h.

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“…Different classes of materials were mixed with gypsum in order to improve its mechanical properties. Blending gypsum with polymers has been considered one of the successful approaches to modulate the mechanical properties of gypsum [11][12][13]. The presence of certain functional groups on these polymers, such as hydroxyl and carboxyl groups, is mostly favoured.…”

Section: Introductionmentioning

confidence: 99%

Compressive strength and preliminary in vitro evaluation of gypsum and gypsum–polymer composites in protein-free SBF at 37°C

El-Maghraby

Gedeon

Rohanová

et al. 2010

Ceramics International

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Investigation of the setting of polyamide fibre/latex-filled plaster composites

Cited by 27 publications

References 17 publications

Characterization of gypsum plasterboard with polyurethane foam waste reinforced with polypropylene fibers

Characterization of gypsum plasterboard with polyurethane foam waste reinforced with polypropylene fibers

Effect of compounding of sodium tripolyphosphate and super plasticizers on the hydration of α-calcium sulfate hemihydrate

Compressive strength and preliminary in vitro evaluation of gypsum and gypsum–polymer composites in protein-free SBF at 37°C

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