Studies on the use of nano zinc oxide and modified silica in NR, CR ...

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Chapter 9 176 Mesoporous silica and rice husk silica were prepared from a low cost silica source i.e., rice husk. Mesoporous silica and rice husk silica were characterized by using X-ray diffraction (XRD), transmission electron microscopy (TEM), BET adsorption and infrared spectroscopy. Mesoporous silica and rice husk silica were found to have larger surface area compared to precipitated silica. Natural rubber compounds were prepared using antioxidant modified mesoporous silica and rice husk silica as filler. The cure and mechanical properties were compared with unmodified precipitated and rice husk silica. Bound rubber content values were found to be greater for mesoporous silica compound compared to precipitated silica compound. The higher bound rubber content values indicate higher rubber-filler interaction with mesoporous silica compared to conventional precipitated silica. The cure and mechanical properties were found to be superior for modified mesoporous and rice husk silica composites compared to unmodified silica composites. ********
ASTM : American Society for Testing and Materials BET : Brunauer, Emmett and Teller BIS : Bureau of Indian Standards CBS : N-cyclohexyl-2-benzothiazyl sulphenamide CR : Chloroprene rubber CRI : Cure rate index cc : Cubic centimeter dNm : Deci Newton meter DEG : Diethylene Glycol DPPD : N,N′-diphenyl-p-phenylenediamine DSC : Differential scanning calorimetry DOP : Dioctyl Phthalate EB : Elongation at Break G’ : Storage modulus G” : Loss modulus G* : Complex modulus g : gram FTIR : Fourier Transform Infrared Gum : Rubber compound without fibre/filler HAF : High Abrasion Furnace hrs : Hours Hz : Hertz IPPD : N-isopropyl-N′-phenyl-p-phenylenediamine ISNR : Indian Standard Natural Rubber min : minutes MH : Maximum torque ML : Minimum torque
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Studies on the use
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WxvÄtÜtà|ÉÇ I hereby declare t
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My heartfelt thanks are also due to
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The use of prepared zinc oxides as
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2.2.10 Characterization techniques
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Part@ B 7.3.1 Characterization - su
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Introduction 1.1 Composites 1.1 Com
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Introduction of reinforcement and m
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Nanophase material: They are same a
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Introduction developed at Oxford Un
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Introduction Rubbers are broadly cl
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Introduction The polymers are prepa
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1.4.1 Zinc oxide Introduction Zinc
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Introduction and tinted rubber comp
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Pharmaceutical industry Introductio
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Introduction textiles contain ZnO,
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1.4.2a. Carbon blacks Introduction
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Introduction especially glass and c
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Introduction properties, filler cha
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Introduction coupling agent in sili
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Introduction amphiphilic di and tri
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Introduction It has been reported t
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Introduction The external manifesta
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Introduction concern for a clean en
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12. C.R.Martin, Chem. Mater, 1996,
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41. E.J.Stewart, J.Elastomers plast
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Introduction 69. J.B. Donnet (Ed),
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Introduction 100. C.T.Kresge, M.E.L
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Introduction 129. E.R.Ericsson, R.A
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Chapter 2 47 In a particular experi
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Chapter 2 Stearic acid (co-activato
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Chapter 2 roll with mill opening at
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Chapter 2 were carried out at a cro
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Chapter 2 2.2.4 Strain-sweep studie
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Chapter 2 2.2.6 Bound rubber conten
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Chapter 2 Surface area 59 Surface a
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Preparation and characterization of
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3.2.2 Method I- Precipitation metho
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Energy dispersive X-ray spectrometr
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3.4.9 Differential scanning calorim
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3.6 References Preparation and char
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Use of nano zinc oxide in natural r
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Tear Strength (N/mm) 120 100 80 60
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4.5 References Use of nano zinc oxi
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Chapter 5 oil resistance to oil swe
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Chapter 5 93 Ingredient phr Table 5
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Chapter 5 95 Torque (dNm) 6.5 6.0 5
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Chapter 5 97 Other technological pr
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Chapter 5 99 Table 5.8 Reinforcing
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Chapter 5 101 Hours Table 5.11 Agei
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Chapter 5 5.5 References 103 1. D.C
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Chapter 6 105 Fatty acids as co-act
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Chapter 6 107 Physical properties s
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Chapter 6 The cure rate index of gu
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Chapter 6 show better mechanical pr
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Chapter 6 113 Table 6.6 Reinforcing
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Chapter 6 115 Tensile modulus (Mpa)
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Chapter 6 6.4 Conclusions 117 1. Gu
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Use of antioxidant modified precipi
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Page 139 and 140: Mix Use of antioxidant modified pre
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