Synergistic effects on polyurethane/lead zirconate titanate/carbon black three-phase composites

Sanches, Adhemar; Kanda, D. H. F.; Malmonge, Luiz Francisco; Silva, Michael J.; Sakamoto, Walter Katsumi; Malmonge, José Antônio

doi:10.1016/j.polymertesting.2017.03.031

Cited by 22 publications

(26 citation statements)

References 31 publications

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“…The CGFS‐S3 took a part of nucleating agent in the crystalline phase, thereby increasing X c, DSC of the LDPE. But, for concentrations above 20 wt % of CGFS‐S3 in the LDPE composites, X c, DSC showed a downward trend caused by a decrease of contact surface area of CGFS‐S3 and LDPE because of the increasing size of the CGFS‐S3 agglomerates with CGFS‐S3 concentration …”

Section: Resultsmentioning

confidence: 97%

“…The polymer materials are always filled with appropriate fillers to enhance their mechanical properties and process ability . Carbon black is an important reinforcing filler due to its superior polymer–filler interaction, large surface area, and better surface activity . Silica is also used as a reinforcing filler owing to its fine particle size, toughness, abrasion resistance, and storage modulus .…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and thermal properties of coal gasification fine slag reinforced low density polyethylene composites

Xue

Wei

et al. 2018

J of Applied Polymer Sci

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Coal gasification fine slag (CGFS) was processed via a grading technique. The CGFS products (CGFS-S1, CGFS-S2, CGFS-S3) with different sizes were obtained. Effects of particle size and unburned carbon on tensile properties of filled low density polyethylene (LDPE) were studied within the CGFS weight fractions ranging from 10 to 50 wt %. The tensile strength was found to increase with decreasing CGFS size, and the tensile properties exhibited good performance, owing to unburned carbon. The tensile strength of the composites increased with increasing CGFS-S3 weight fraction. The analysis of mathematical model and SEM revealed that the firm improvement of tensile strength resulted from the strong interactions between LDPE polymer chains and CGFS-S3 particles, and good dispersion of CGFS-S3 in resin. Thermogravimetric analysis proved obvious reinforcement in thermal-oxidative stability by incorporation of CGFS-S3. The degree of crystallinity of LDPE/CGFS-S3 showed the first increased and then decreased variation tendency.

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Mechanical and thermal properties of coal gasification fine slag reinforced low density polyethylene composites

Xue

Wei

et al. 2018

J of Applied Polymer Sci

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“…2011) andSanches et al (2017) demonstrates in their research where it shows no noticeable increment in friction force when thickness of rubber increases.…”

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confidence: 82%

Topology Analysis of Bicycle Rim Brake Pad to Improve Braking Performance

Keong¹

2018

MATEC Web Conf.

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Various parameters of rubber brake pad tribology will affect the braking performance of a rim brake system of a bicycle. Out of those, three main parameters are contact length of brake pad, surface topology of friction surface, and the thickness of rim brake pad. the goals of this study are to improve the braking performance of rim brakes to have better friction performance while retaining its simplicity of manufacturing and to investigate the effect on friction performance through the modifications of external dimensions and surface topology of rim brakes. Moreover, through this study, it can reveal which topology modifications of the rubber brake pad will have the most significance effect towards friction performance. Experimental measurement is used to obtain the friction properties and then parametric study was carried out numerically to obtain the braking performance of the rubber brake pad. the parametric study was simulated in ANSYS Transient Structural analysis. Taguchi design method was used for quantitatively identifying the right inputs and parameter levels. the results showed that smaller groove and smaller width contribute to higher friction performance. Stress concentration occurs at the edge of groove; hence, by reducing number of groove, it allows higher braking force to be generated. Location of groove concentration appears to have insignificance effect to the friction performance. Through the topology modifications, it improves the braking performance by 3%. As for external dimension, thick rubber brake pad will not demonstrate any improvement and longer contact length will demonstrate higher friction force. However, it has to be bounded by the practicality of the dimension. Upon modifications at the external dimension, it has an improvement of 64% in braking performance.

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“…Research in this area has proposed alternatives to increase the electric field on the ceramic particles incorporated in the composite. One of the alternatives is the incorporation of a third conductive phase, such as conductive particles and polymers 15,16 .…”

Section: Introductionmentioning

confidence: 99%

1-3 Castor Oil-Based Polyurethane/PZT Piezoelectric Composite as a Possible Candidate for Structural Health Monitoring

et al. 2020

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In this study, we obtained and characterized a piezoelectric composite with 1-3 connectivity from castor oil polyurethane (PUR) and lead zirconate titanate (PZT) rods. Two samples were obtained, one with 15% PZT volume and the other with 34% PZT volume. The ac electrical properties of the 1-3 piezoelectric composite samples demonstrated the frequency-dependence behavior of disordered solids. The piezoelectric coefficient (d 33) was greatly influenced by the number of PZT rods and the matrix curing process. The sample with 34% PZT volume showed a higher d 33 value, (246 pC/N measured after 30 d of polarization). The composites were evaluated for use in acoustic emission wave sensors for application in structural health monitoring.

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Synergistic effects on polyurethane/lead zirconate titanate/carbon black three-phase composites

Cited by 22 publications

References 31 publications

Mechanical and thermal properties of coal gasification fine slag reinforced low density polyethylene composites

Mechanical and thermal properties of coal gasification fine slag reinforced low density polyethylene composites

Topology Analysis of Bicycle Rim Brake Pad to Improve Braking Performance

1-3 Castor Oil-Based Polyurethane/PZT Piezoelectric Composite as a Possible Candidate for Structural Health Monitoring

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