Influence of water immersion and ultraviolet weathering on mechanical and viscoelastic properties of polyphenylene sulfide–carbon fiber composites

Batista, Natássia Lona; Faria, Maria Cândida Magalhães de; Iha, Koshun; Oliveira, Pedro César Garcia de; Botelho, Edson Cocchieri

doi:10.1177/0892705713484747

Cited by 30 publications

(23 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CF-PPS showed discoloration as a result of the UV irradiation, as demonstrated in Figure 14c. It was reported by Batista et al that such discoloration of CF-PPS is due to photolysis and photo-oxidation, resulting in an increase in the glass transition temperature [16]. Furthermore, surface embrittlement of the composite was observed as a result of the extensive cross-linking of polymer chains [16].…”

Section: Outdoor Natural Weatheringmentioning

confidence: 97%

“…It was reported by Batista et al that such discoloration of CF-PPS is due to photolysis and photo-oxidation, resulting in an increase in the glass transition temperature [16]. Furthermore, surface embrittlement of the composite was observed as a result of the extensive cross-linking of polymer chains [16]. It should also be noted that the effect of wind speed may not be neglected, since one end of the joints was not clamped and additional loads could be exerted on the specimens.…”

Section: Outdoor Natural Weatheringmentioning

confidence: 99%

“…In addition to the humidity, ultraviolet (UV) radiation is another source of degradation for polymers and composites. It is frequently reported [16,17] that photo-oxidation, as a result of UV radiation, changes the physical properties of polymers, such as discoloration and increase in the glass transition temperature, and reduces their mechanical performance. Such behavior should also be considered when using polymers and composites in a structure.…”

Section: Introductionmentioning

confidence: 99%

“…Aluminum hydroxide forms a weak layer that may be easily detached from the underlying aluminum oxide. Aluminum oxide converts into the crystalline aluminum hydroxide (AlOOH) known as boehmite [16,18]. Upon further hydration, AlOOH transforms into Al(OH) 3 , known as bayerite [13,21].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Durability of Metal-Composite Friction Spot Joints under Environmental Conditions

Goushegir¹,

Scharnagl

Santos³

et al. 2020

Materials

View full text Add to dashboard Cite

The current paper investigates the durability of the single-lap shear aluminum-composite friction spot joints and their behavior under harsh accelerated aging as well as natural weathering conditions. Four aluminum surface pre-treatments were selected to be performed on the joints based on previous investigations; these were sandblasting (SB), conversion coating (CC), phosphoric acid anodizing (PAA), and PAA with a subsequent application of primer (PAA-P). Most of the pre-treated specimens retained approximately 90% of their initial as-joined strength after accelerated aging experiments. In the case of the PAA pre-treatment, the joint showed a lower retained strength of about 60%. This was explained based on the penetration of humidity into the fine pores of the PAA pre-treated aluminum, reducing the adhesion between the aluminum and composite. Moreover, friction spot joints produced with three selected surface pre-treatments were held under outside natural weathering conditions for one year. PAA-P surface pre-treated specimens demonstrated the best performance with a retained strength of more than 80% after one year. It is believed that tight adhesion and chemical bonding reduced the penetration of humidity at the interface between the joining parts.

show abstract

Section: Outdoor Natural Weatheringmentioning

confidence: 97%

Section: Outdoor Natural Weatheringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Durability of Metal-Composite Friction Spot Joints under Environmental Conditions

Goushegir¹,

Scharnagl

Santos³

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…As can be seen PPS/CF* laminate presented an increase of about 112% whereas PPS/BP/CF system shown a huge increment up to 186%. This behavior can be associated with degradation of the material or a creation of secondary crosslinking network, which means that the mixture of water and high temperature does not act properly as plasticize making the samples more rigid [40]. Furthermore, it can be noted that the Tg is only affected in PPS/BP/CF* system by the increase of ~7 °C, i.e.…”

Section: Calculation Of Density and Porosity Of The Composite Laminatementioning

confidence: 99%

Moisture and temperature influence on mechanical behavior of PPS/buckypapers carbon fiber laminates

Corredor¹,

Santos²,

Costa³

et al. 2017

Mater. Res. Express

View full text Add to dashboard Cite

In this work, multiwall carbon nanotubes (MWCNT) were dispersed in water with the assistance of water based surfactant and then sonicated in order to obtain a very well dispersed solution. The suspension was filtrate under vaccum conditions, generating a thin film called buckypapers (BP). Poly (phenylene sulphide) (PPS) reinforced carbon fiber (CF) and PPS reinforced CF/BP composites were manufactured through hot compression molding technique. Subsequently the samples were exposed to extreme humidity (90% of moisture) combined with high temperature (80 °C). The mechanical properties of the laminates were evaluated by dynamic mechanical analysis, compression shear test, interlaminar shear strength and impulse excitation of vibration. Volume fraction of pores were 10.93% for PPS/CF and 16.18% for PPS/BP/CF, indicating that the hot compression molding parameters employed in this investigation (1.4 MPa, 5 min and 330 °C) affected both the consolidation quality of the composites and the mechanical properties of the final laminates.

show abstract

Effect of UV‐water weathering on the mechanical properties of flax‐fiber‐reinforced polymer composites

Xu,

van den Hurk,

Liu

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

This study examines the influence of weathering aging on the mechanical properties and durability of flax fiber‐reinforced polymer composites (FFRP) intended for outdoor applications. Employing an accelerated weathering environment replicating natural outdoor conditions, encompassing UV radiation, condensation, and water spray, the FFRP samples with 2 and 4 mm thicknesses underwent exposure durations of 0, 500, 1000, and 1500 h. Mechanical tests characterized tensile, flexural, and inner‐plane shear properties, while a custom‐made apparatus measured the long‐term tensile creep behavior. Additionally, scanning electron microscopy allowed for the observation of microscopic changes in fiber and matrix. The findings illustrate a consistent decline in tensile and flexural properties with increased weathering exposure, resulting in reductions of 17% and 38% in the tensile strength and modulus, and 24% and 52% in the flexural strength and modulus after 1500 h. Intriguingly, inner‐plane shear strength exhibited a slight increase after 500 h before a subsequent decrease. Furthermore, samples with the same thickness demonstrated an increased creep development with longer weathering durations. Despite this, the mechanical degradation rate induced by weathering was comparatively slower for thicker samples. Overall, the diminished mechanical properties of FFRP post‐weathering can be attributed not only to the polymer but also to the substantial role played by flax fibers in this process.Highlights UV weathering degrades the mechanical properties of flax/polyester composites. Both the instantaneous elastic properties and the long‐term creep behavior are affected by weathering. Thickness influences the mechanical degradation of the composites caused by UV weathering. SEM confirmed UV‐water weathering resulted in the degradation of both natural fiber and polymer matrices.

show abstract

Influence of water immersion and ultraviolet weathering on mechanical and viscoelastic properties of polyphenylene sulfide–carbon fiber composites

Cited by 30 publications

References 20 publications

Durability of Metal-Composite Friction Spot Joints under Environmental Conditions

Durability of Metal-Composite Friction Spot Joints under Environmental Conditions

Moisture and temperature influence on mechanical behavior of PPS/buckypapers carbon fiber laminates

Effect of UV‐water weathering on the mechanical properties of flax‐fiber‐reinforced polymer composites

Contact Info

Product

Resources

About