Thermoplastic elastomeric blend of nitrile rubber and poly(styrene-co-acrylonitrile). I. Effect of mixing sequence and dynamic vulcanization on mechanical properties

2003 ◽  
Vol 88 (8) ◽  
pp. 1976-1987 ◽  
Author(s):  
S. Anandhan ◽  
P. P. De ◽  
S. K. De ◽  
Anil K. Bhowmick
Keyword(s):  
Mechanical Properties ◽  
Nitrile Rubber ◽  
Dynamic Vulcanization ◽  
Elastomeric Blend ◽  
Mixing Sequence

THERMOPLASTIC VULCANIZATES BASED ON DYNAMICALLY VULCANIZED POLYPROPYLENE/CARBOXYLATED NITRILE RUBBER BLENDS

2019 ◽  
Vol 92 (3) ◽  
pp. 546-557 ◽  
Author(s):  
Bluma G. Soares ◽  
Juliana B. Freitas ◽  
Adriana A. Silva ◽  
Alex S. Sirqueira
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Rubber Particle ◽  
Dynamic Mechanical Properties ◽  
Nitrile Rubber ◽  
Dynamic Vulcanization ◽  
Reactive Compatibilization ◽  
Rubber Blends ◽  
Thermoplastic Vulcanizates ◽  
Triethylene Tetramine

ABSTRACT Thermoplastic vulcanizates (TPVs) based on polypropylene (PP) and carboxylated nitrile rubber (XNBR) with improved mechanical properties were prepared by dynamic vulcanization using dicumyl peroxide (DCP) in combination with N,N′-m-phenylene-bis-maleimide (BMI) as a cross-linking system. The effect of PP grafted with maleic anhydride (PP-g-MA) or with glycidyl methacrylate (PP-g-GMA) and triethylene-tetramine (TETA) as the compatibilizing systems on the mechanical, morphological, and dynamic mechanical properties of PP/XNBR blends was investigated. Experimental results revealed that PP-g-GMA has a better compatibilizing efficiency. Tensile strength and elongation at break presented a significant improvement with the addition of 2.5 to 7.5 phr of this functionalized PP. The improvement of the tensile properties was observed for all blend compositions studied. Also the tensile properties of the blends did not change considerably after three reprocessing cycles, confirming the efficiency of this system as a TPV. The presence of PP-g-GMA also resulted in an increase of the apparent melt viscosity of the corresponding TPVs, confirming the reactive compatibilization. A decrease in rubber particle size with the presence of PP-g-GMA was also observed by scanning electron microscopy.

Effect of Epoxy Resin Concentration on Some Mechanical Properties of Carbon Fabric/ Nitrile Rubber Reinforced Composites

2019 ◽  
Vol 9 (1) ◽  
pp. 1-15
Author(s):  
Sawsan Fakhry Halim ◽  
Said Sayed Gad El Kholy ◽  
HalaFikry Naguib ◽  
Riham Samir Hegazy ◽  
Nermen Mohamed Baheg
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Nitrile Rubber ◽  
Reinforced Composites ◽  
Carbon Fabric

Effect of wood flour and naphthenic oil on morphology, rheological and mechanical properties of EPDM/PP/AL composite

2019 ◽  
Vol 34 (1) ◽  
pp. 153-163
Author(s):  
Rui Gou ◽  
Minghui Guo
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Raw Materials ◽  
Wood Flour ◽  
Core Layer ◽  
Thermoplastic Elastomer ◽  
Reactive Blending ◽  
Dynamic Vulcanization ◽  
Al Composite ◽  
Wide Range

Abstract Thermoplastic elastomer (TPE), made from ethylene propylene diene monomer (EPDM) and polypropylene (PP) base on reactive blending, has an excellent processing performance and characteristics and a wide range of applications. In this paper, EPDM, PP and ammonium lignosulfonate (AL) were selected as raw materials, wood flour (WF) of poplar tree was used as filler, naphthenic oil was used as plasticizer, DCP vulcanization system with dynamic vulcanization was carried, to make a new kind of composite material. This research studied the influences of wood flour and naphthenic oil content on the microstructure, mechanical properties and rheological properties of the composite material. The result showed: the content of wood flour and naphthenic oil has big impact on composite material. With the increase of the wood flour content, the mechanical properties are increased firstly and then decreased. The viscosity and modulus of the composite is improved with the increase of wood flour. With of the increase of the amount of naphthenic oil, the mechanical properties, viscosity and modulus of the composites decreased. When the content of wood flour is between 30–60 parts and the content of naphthenic oil is less than 20, the EPDM/PP/AL composite is suitable for using as the core layer elastic material of composite floor.

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