Reinforcement of irradiated waste polyamide/reclaimed rubber powder composites with glass fiber

Hassan, Medhat M.; Badway, Nagwa A.; Elnaggar, Mona Y.; Hegazy, El‐Sayed A.

doi:10.1002/pc.23324

Cited by 5 publications

(4 citation statements)

References 32 publications

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“…Gamma radiation‐induced free radicals in all ingredient of various composites as reported in literature and our previous work and suggested modes of free radical generation on irradiated WPE and WR which contain various ingredients like SBR, NBR, and NR and AC. Radicals are formed after bond cleavages as shown in Scheme .…”

Section: Resultssupporting

confidence: 62%

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Thermoplastic elastomer based on waste polyethylene/waste rubber containing activated carbon black: Impact of gamma irradiation

Fathy

Elnaggar

Raslan

2018

Vinyl Additive Technology

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The effect of using gamma radiation on the prepared activated carbon (AC) from carbon black using dose 500 kGy was studied. Moreover, AC powder were blended in internal mixer to prepare thermoplastic elastomer with percentage (75/25/10) wt% based on waste polyethylene and waste rubber which irradiated before mixing at dose100 kGy separately and AC. Chemical activity of composites was improved as a result of using gamma radiation which was examined by electron spin resonance estimations. Composites were studied by different techniques, such as FTIR, mechanical, thermal, morphology, and X-ray diffraction. The results indicated that optimistic effect of using gamma rays with improving the properties of the composites. J. VINYL ADDIT.

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Section: Resultssupporting

confidence: 62%

“…. The presence of CB in all three composites has been established by the peak at 1,705 cm −1 of the lactones ring stretching . However, the intensity of this peak was decreased in Composites B and C as a result of irradiation treatments.…”

Section: Resultsmentioning

confidence: 82%

Thermoplastic elastomer based on waste polyethylene/waste rubber containing activated carbon black: Impact of gamma irradiation

Fathy

Elnaggar

Raslan

2018

Vinyl Additive Technology

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“…The results showed that the durability of MWCNT‐reinforced specimens has been significantly improved. Hassan et al [ 13 ] presented the mechanical and thermal behaviors of irradiated waste polyamide/reclaimed rubber powder composites with glass fiber reinforcement. The results indicated that glass fiber reinforcement can improve the elastic modulus, tensile, and thermal properties of the specimens.…”

Section: Introductionmentioning

confidence: 99%

Pin‐bearing connection strength of single‐bolted pultruded glass fiber‐reinforced polymer profiles strengthened by glass fiber sheet

2022

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This study's aim was to research the ultimate loads and failure modes of single-bolted pultruded glass-fiber-reinforced polymer (PGFRP) connections reinforced by glass fiber sheets (GFSs) under pin-bearing conditions. In total, 144 specimens with various geometric parameters of GFRP bolted connections with different ratio values of the end distance of PGFRP plate to bolt diameter (e/d) and various ratio values of width of PGFRP plate to bolt diameter (w/d) were considered, and their results are here discussed (e/d = 2,3,4 and w/d = 2,3,4,5). Three types of GFSs (0 /90 GFSs, ±45 GFSs, and chopped strand mat GFSs) were molded by the vacuumassisted resin transfer molding (VaRTM) method and used to strengthen the connections. The results show that all three types of GFSs had good effects on the increase in the ultimate load of the connections. In addition, the strengthening effects were decreased with the increase in the e/d ratio of the connections for all types of GFSs. Moreover, theoretical equations were suggested to forecast the ultimate loads and failure modes of pinbearing single GFS-strengthened PGFRP connections with high accuracy (less than 12% deviation).

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“…Consequently, there is a need to find a solution for the valuation and employment of this waste product. Efforts are being made to reuse or recycle waste polyamide [40][41][42]. With regard to the use of polyamide powder in construction materials, some previous analyses have been conducted about the characterization of recycled mortars with polyamide powder waste, analyzing their durability and their microstructure [39,43,44].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Economic Evaluation of the Use of Recycled Polyamide Powder in Masonry Mortars

et al. 2020

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Due to the considerable amount of waste plastics and polymers that are produced annually, the introduction of these waste products in construction materials is becoming a recurrent solution to recycle them. Among polymers, polyamide represents an important proportion of polymer waste. In this study, sustainable and lightweight mortars were designed and elaborated, substituting the aggregates by polyamide powder waste. Mortars were produced with various dosages of cement/aggregates, and the polyamide substitutions were 25, 50, 75, and 100% of the aggregates. The aim of this paper is to determine the density and the compressive strength of the manufactured mortars to observe the feasibility for being employed as masonry or rendering and plastering mortars. Results showed that with increasing polymer substitution, lower densities were achieved, ranging from 1850 to 790 kg/m3 in modified mortars. Mortars with densities below 1300 kg/m3 are cataloged as lightweight mortars. Furthermore, compressive strength also decreased with more polyamide substitution. Obtained values in recycled mortars were between 15.77 and 2.10 MPa, but the majority of the values (eight out of 12) were over 5 MPa. Additionally, an economic evaluation was performed, and it was observed that the use of waste polyamide implies an important cost reduction, apart from the advantage of not having to manage this waste material. Consequently, not only the mechanical properties of the new recycled materials were verified as well as its economic viability.

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Reinforcement of irradiated waste polyamide/reclaimed rubber powder composites with glass fiber

Cited by 5 publications

References 32 publications

Thermoplastic elastomer based on waste polyethylene/waste rubber containing activated carbon black: Impact of gamma irradiation

Thermoplastic elastomer based on waste polyethylene/waste rubber containing activated carbon black: Impact of gamma irradiation

Pin‐bearing connection strength of single‐bolted pultruded glass fiber‐reinforced polymer profiles strengthened by glass fiber sheet

Analysis and Economic Evaluation of the Use of Recycled Polyamide Powder in Masonry Mortars

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