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Honglin Hu - One of the best experts on this subject based on the ideXlab platform.

  • surface modification of self healing poly urea formaldehyde microcapsules using Silane Coupling Agent
    Applied Surface Science, 2008
    Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu
    Abstract:

    Abstract Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy Silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the Silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si–O–C) was formed by the reaction between Si–OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si–OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the Silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix.

  • Surface modification of self-healing poly(urea-formaldehyde) microcapsules using Silane-Coupling Agent
    Applied Surface Science, 2008
    Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu, Wenbo Liu
    Abstract:

    Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy Silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the Silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si-O-C) was formed by the reaction between Si-OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si-OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the Silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix. ?? 2008 Elsevier B.V. All rights reserved.

H Abdul P S Khalil - One of the best experts on this subject based on the ideXlab platform.

  • effect of a Silane Coupling Agent on the properties of white rice husk ash polypropylene natural rubber composites
    Polymer International, 2001
    Co-Authors: Hanafi Ismail, L Mega, H Abdul P S Khalil
    Abstract:

    White rice husk ash (WRHA)–polypropylene (PP)/natural rubber (NR) composites were prepared using a Brabender Plasticorder at 180 °C and a rotor speed of 50 rev min−1. The mechanical and water-absorption properties were studied. The incorporation of WRHA into the PP/NR matrix has resulted in the improvement of the tensile modulus; however, the tensile strength, elongation at break and stress at yield decreased with increasing WRHA loading. Poor filler matrix interactions are believed to be responsible for the decrease in the properties. Incorporation of a Silane Coupling Agent, 3-aminopropyl triethoxySilane (3-APE), improved tensile modulus, tensile strength and stress at yield of the composites. Water-absorption studies indicate that the use of the Coupling Agent reduced the amount of water absorbed by the composites. © 2001 Society of Chemical Industry

Haiyan Li - One of the best experts on this subject based on the ideXlab platform.

  • surface modification of self healing poly urea formaldehyde microcapsules using Silane Coupling Agent
    Applied Surface Science, 2008
    Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu
    Abstract:

    Abstract Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy Silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the Silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si–O–C) was formed by the reaction between Si–OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si–OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the Silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix.

  • Surface modification of self-healing poly(urea-formaldehyde) microcapsules using Silane-Coupling Agent
    Applied Surface Science, 2008
    Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu, Wenbo Liu
    Abstract:

    Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy Silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the Silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si-O-C) was formed by the reaction between Si-OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si-OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the Silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix. ?? 2008 Elsevier B.V. All rights reserved.

Hanafi Ismail - One of the best experts on this subject based on the ideXlab platform.

  • The Effects of Filler Loading and a Silane Coupling Agent on the Dynamic Properties and Swelling Behaviour of Bamboo Filled Natural Rubber Compounds
    Journal of Elastomers and Plastics, 2020
    Co-Authors: Hanafi Ismail
    Abstract:

    The effects of filler loading and a Silane Coupling Agent, bis (triethoxysilylpropyl) tetrasulphide, Si69 on the dynamic properties and swelling behaviour of bamboo fibre filled natural rubber composites were studied. The dynamic properties such as minimum elastic torque, S′ @ ML, maximum elastic torque, S′ @ MH, tan δ @ MH and maximum viscous torque, S″ @ MH increased with increasing filler loading. However, the presence of a Silane Coupling Agent, Si69 showed beneficial effects by reducing the S′ @ ML, tan δ @ MH and S″ @ MH. Swelling studies also indicated that Si69 can be used to reduce the water absorption of the composites.

  • Soil Burial Study of Palm Kernel Shell-Filled Natural Rubber Composites: The Effect of Filler Loading and Presence of Silane Coupling Agent
    Bioresources, 2016
    Co-Authors: Shuhairiah Daud, Hanafi Ismail, A. Abu Bakar
    Abstract:

    Palm kernel shell (PKS) was incorporated into natural rubber composites at loadings ranging from 0 to 20 phr using a laboratory-size two-roll mill. A soil burial study of the PKS-filled NR composites as a function of filler loading and Silane Coupling Agent incorporation was then conducted over a period of six months. The degraded composites were evaluated by means of tensile testing. To study the degradation of the composites after soil burial, their morphological properties were observed by scanning electron microscopy. Prior to the soil burial tests, as the PKS filler loading increased, the tensile strength and elongation at break of the composites both with and without the Silane Coupling Agent decreased, while the tensile moduli (M100 and M300) increased. At identical filler loading values, the NR/PKS composites with the incorporated Silane Coupling Agent exhibited better tensile properties than the NR/PKS composites without the Silane. Following the soil burial tests, the tensile strength, elongation at break, and the tensile moduli (M100 and M300) all decreased because of microbial attacks on the composites. The addition of Silane enhanced the retention of the tensile properties of the NR/PKS composites after soil burial because of the improved adhesion at the filler-rubber matrix interface.

  • The Effect of Filler Loading and Silane Coupling Agent on Properties of Rice Husk Powder Filled Natural Rubber Compounds
    2015
    Co-Authors: Razif Nordin, Che Soh Said, Hanafi Ismail
    Abstract:

    The effect of Silane Coupling Agent, bis(triethoxysilyl propyl) tetrasulphide, Si69 on cure characteristics and mechanical properties of rice husk powder, RHP filled natural rubber, NR compounds were studied. Scorch time t2 and cure time t90 of the compounds decrease with increasing filler loading and with presence of a Silane Coupling Agent, Si69. However, minimum torque increases with increasing filler loading but at a similar filler loading shows lower value with the presence of Si69. The mechanical properties of compounds viz tensile strength, tensile modulus and hardness were also increased while resilience decreases with additional of Si69.

  • BIODEGRADATION, MORPHOLGICAL, AND FTIR STUDY OF RATTAN POWDER-FILLED NATURAL RUBBER COMPOSITES AS A FUNCTION OF FILLER LOADING AND A Silane Coupling Agent
    Bioresources, 2012
    Co-Authors: Komethi Muniandy, Hanafi Ismail, Nadras Othman
    Abstract:

    Natural rubber (NR) composites were prepared by the incorporation of rattan (Calamus Manan) powder at filler loadings in the range of 0 to 30 phr into a natural rubber matrix with a laboratory size two roll mill. The particle size of rattan powder was less than 180 µm. The biodegradation of the rattan powder-filled natural rubber (NR) composites were investigated as a function of filler loading and a Silane Coupling Agent. A soil burial test was carried out for six months, and the degradation of the NR compound and the NR composites was evaluated through tensile testing. Morphological properties were determined using scanning electron microscopy (SEM) to evaluate the degradation of the samples after six months of soil exposure. The results indicate that the tensile strength, elongation at break, and stress at 100% elongation (M 100) all decreased after soil burial testing due to the biological attack by microbes onto the sample. Improvement in tensile properties was seen with the addition of the Silane Coupling Agent due to better adhesion between the rattan filler and the rubber matrix. The deterioration in tensile properties due to the biodegradation process was confirmed by SEM and FTIR studies.

  • FATIGUE LIFE, MORPHOLOGICAL STUDIES, AND THERMAL AGING OF RATTAN POWDER-FILLED NATURAL RUBBER COMPOSITES AS A FUNCTION OF FILLER LOADING AND A Silane Coupling Agent
    Bioresources, 2012
    Co-Authors: Hanafi Ismail, Komethi Muniandy, Nadras Othman
    Abstract:

    Fatigue life, morphological studies, and thermal aging properties of rattan powder-filled natural rubber (NR) composites were investigated as a function of filler loading and a Silane Coupling Agent. NR composites were prepared by the incorporation of rattan powder in the range of 0 to 30 phr into a NR matrix with a laboratory size two roll mill. Thermal aging was carried out for 7 and 14 days at a temperature of 70 °C, and tensile testing was performed in order to determine the aging properties. The results indicated that the fatigue life of rattan powder-filled NR composites decreased with increasing rattan powder loading. Tensile strength and elongation at break decreased whilst tensile modulus, stress at 100% elongation (M100), and stress at 300% elongation (M300) increased after aging. Nevertheless, the addition of the Silane Coupling Agent improved both fatigue life and the aging properties of NR composites due to better adhesion between the rubber matrix and the rattan filler which was confirmed by FTIR studies of composites and SEM studies of fatigue fractured surfaces.

Wenbo Liu - One of the best experts on this subject based on the ideXlab platform.

  • Surface modification of self-healing poly(urea-formaldehyde) microcapsules using Silane-Coupling Agent
    Applied Surface Science, 2008
    Co-Authors: Haiyan Li, Rongguo Wang, Honglin Hu, Wenbo Liu
    Abstract:

    Poly(urea-formaldehyde) (PUF) microcapsules, which are used as self-healing component of fibre reinforced resin matrix composites, were prepared by in situ polymerization method. The surface of PUF microcapsules was modified by using 3-aminopropyltriethoxy Silane-Coupling Agent (KH550), and the interfacial interactions between PUF microcapsules and KH550 was also studied. Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectra (XPS) analyses showed that the Silane-Coupling Agent molecular binds strongly to PUF microcapsules surface. Chemical bond (Si-O-C) was formed by the reaction between Si-OH and the hydroxyl group of PUF microcapsules, also there have chemical adsorption effect in the interface simultaneously because of the existence of hydrogen bond between Si-OH and the hydroxyl group of PUF microcapsules. Scanning electronic microscopy (SEM) observation showed that a thin layer was formed on the surface of modified PUF microcapsules. Additionally, fractured surface were observed under SEM to investigate the interfacial adhesion effect between PUF microcapsules and epoxy matrix. The result indicted that the Silane-Coupling Agent play an important role in improving the interfacial performance between microcapsules and resin matrix. ?? 2008 Elsevier B.V. All rights reserved.