Dynamic mechanical properties of castor oil‐based polyurethane/epoxy graft interpenetrating polymer network composites

Chen, Shoubing; Wang, Qihua; Pei, Xianqiang; Wang, Tingmei

doi:10.1002/app.32518

Cited by 31 publications

(24 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the increasing of PUSiO 2 content in the blends, the T g of NBR in the NBR/(PU-SiO 2 ) blends shifts to a lower temperature and locates between the T g s of neat NBR and PU-SiO 2 . The result indicates that the compatibility between NBR phase and PU-SiO 2 phase is improved in the NBR/(PU-SiO 2 ) blends [25,26]. From the above TEM analysis, we can see that with more PUSiO 2 incorporated in NBR, the interpenetration and entanglement structures between NBR and PU-SiO 2 increase.…”

Section: Dynamic Mechanical Analysismentioning

confidence: 80%

Novel blends of acrylonitrile butadiene rubber and polyurethane-silica hybrid networks

Tan¹,

Wang²,

Tai³

et al. 2012

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Novel blends of acrylonitrile butadiene rubber (NBR) and polyurethane-silica (PU-SiO 2 ) hybrid networks have been prepared by melt blending. The PU-SiO 2 hybrid networks were formed via the reaction of NCO groups of NCO-terminated PU prepolymer and OH groups of SiO 2 in the absence of an external crosslinking agent (i.e. alcohols and amines) during the curing process of NBR. Both in the neat PU-SiO 2 system and the NBR/(PU-SiO 2 ) system, the NCO-terminated PU prepolymer could be crosslinked by SiO 2 to form PU-SiO 2 hybrid networks. The effects of PU-SiO 2 introduction into the NBR, on the properties of the resulting blends were studied. It was found that the vulcanization was activated by the incorporation of PU-SiO 2 . Transmission electronic microscopy (TEM) studies indicated that the interpenetration and entanglement structures between NBR and PU-SiO 2 increased with increasing PU-SiO 2 content and the quasi-interpenetrating polymer networks (quasi-IPN) structures were formed when the PU-SiO 2 was 50 wt% in the NBR/(PU-SiO 2 ) systems. The microstructures formed in the blends led to good compatibility between NBR and PU-SiO 2 and significantly improved the mechanical properties, abrasion resistance and flex-fatigue life of the blends.

show abstract

Section: Dynamic Mechanical Analysismentioning

confidence: 80%

Novel blends of acrylonitrile butadiene rubber and polyurethane-silica hybrid networks

Tan¹,

Wang²,

Tai³

et al. 2012

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…In this study, bio‐based composites were prepared predominantly from renewable sources, i.e., the PU matrix was based on NaLS and reinforced with curaua and coir lignocellulosic fibers. In addition, castor oil (CO), a vegetable oil obtained from the seed of the castor bean, contains ricinoleic acid [Figure 1(b)] as its main component and has been extensively used in the preparation of PU 45–48…”

Section: Introductionmentioning

confidence: 99%

Composites based on renewable materials: Polyurethane‐type matrices from forest byproduct/vegetable oil and reinforced with lignocellulosic fibers

Ramires

Oliveira

Frollini

2013

J of Applied Polymer Sci

View full text Add to dashboard Cite

The use of products and byproducts from the agro-industry and forest biorefinery is essential for the development of value-added and low environmental-impact materials. In this study, polyurethanes were prepared using sodium lignosulfonate (NaLS) and castor oil (CO) as reagents and were used to prepare composites reinforced with lignocellulosic fibers, namely, curaua and coir fibers (30 wt %, 3 cm length, and randomly oriented). The SEM images of fractured surfaces of the composites revealed excellent adhesion at the fiber/matrix interface of both coir and curaua composites, which probably resulted from the favorable interactions between polar groups, as well as amid low polarity domains that are present in both the matrix and the reinforcements. The composites exhibited different impact/flexural and strength/flexural moduli (NaLS/CO/Curaua ¼ 465 Jm À1 /44 MPa/2 GPa; NaLS/CO/Coir ¼ 180 Jm À1 /25 MPa/1 GPa). The higher tensile strength/aspect ratio of the curaua fibers (485 MPa/259) compared with that of the coir fibers (120 MPa/130) most likely contributes to the enhanced performance of its composite.

show abstract

“…To further improve the performance of PU/EP IPNs, much attention has been paid to modifying them. Studies have shown that the PU/ EP IPN composites had rather high mechanical strength, high damping properties, and good thermal stability [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear Behaviors of Two Kinds of Hydroxyl-Terminated Polydimethylsiloxane-Modified PU/EP IPN Composites Under Dry Sliding Conditions

Chen

Wang

2011

Tribol Lett

Self Cite

View full text Add to dashboard Cite

In this study, a systematic investigation on the tribological properties of two kinds of hydroxyl-terminated polydimethylsiloxane (HTPDMS)-modified castor oilbased polyurethane/epoxy resin (PU/EP) interpenetrating polymer network composites (IPN) was carried out through a pin-on-disk arrangement under dry sliding conditions. Experimental results revealed that the incorporation of HTPDMS can significantly improve the friction and wear properties of PU/EP IPN. Further, it was found that both the friction coefficient and wear loss decreased with increasing content of HTPDMS. The worn surface of the PU/EP IPN matrix and the modified composites were analyzed using scanning electron microscope and 3D noncontact surface-mapping profiler. The as-prepared and worn surfaces of the HTPDMS-modified PU/EP IPN were also investigated using X-ray photoelectron spectroscopy. The mechanisms for the improvement of tribological properties were discussed.

show abstract

Dynamic mechanical properties of castor oil‐based polyurethane/epoxy graft interpenetrating polymer network composites

Cited by 31 publications

References 16 publications

Novel blends of acrylonitrile butadiene rubber and polyurethane-silica hybrid networks

Novel blends of acrylonitrile butadiene rubber and polyurethane-silica hybrid networks

Composites based on renewable materials: Polyurethane‐type matrices from forest byproduct/vegetable oil and reinforced with lignocellulosic fibers

Friction and Wear Behaviors of Two Kinds of Hydroxyl-Terminated Polydimethylsiloxane-Modified PU/EP IPN Composites Under Dry Sliding Conditions

Contact Info

Product

Resources

About