Wood flour: A new filler for the rubber processing industry. II. Cure characteristics and mechanical properties of NBR compounds filled with corona-treated wood flour

2003 ◽  
Vol 91 (2) ◽  
pp. 883-889 ◽  
Author(s):  
T. G. Vladkova ◽  
P. D. Dineff ◽  
D. N. Gospodinova
Keyword(s):  
Mechanical Properties ◽  
Wood Flour ◽  
Treated Wood ◽  
Processing Industry ◽  
Cure Characteristics

scholarly journals Role of Compatibilizer on Morphological and Mechanical Properties of Low Cost Polypropylene/Wood Flour Composites

2013 ◽  
Vol 29 ◽  
pp. 113-120 ◽  
Author(s):  
Netra L. Bhandari ◽  
Sabu Thomas ◽  
Chapal K. Das ◽  
Rameshwar Adhikari
Keyword(s):  
Mechanical Properties ◽  
Tensile Testing ◽  
Wood Flour ◽  
Low Cost ◽  
Treated Wood ◽  
Chemical Society ◽  
Melt Mixing ◽  
Chemically Modified ◽  
Pp Composites

Wood flour (WF) reinforced polypropylene (PP) composites were studied with special attention to morphology and mechanical properties of the composites and the effectiveness of chemically modified fillers to improve their mechanical properties. The composites of polypropylene with neat wood flour and treated wood flour of Sorea robusta in different proportions were prepared by melt mixing followed by compression molding. Maleic anhydride grafted polypropylene (MA-g-PP) was used as compatibilizer. The samples were characterized by Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), tensile testing, and water absorption testing. The results show that the alkali treated WF is more compatible with PP matrix than the neat one and the effects are reflected in the morphological and mechanical properties of the composites. The compatibilizer has been found to play key role to enhance the filler-matrix interfacial interactions.DOI: http://dx.doi.org/10.3126/jncs.v29i0.9276Journal of Nepal Chemical Society Vol. 29, 2012 Page: 113-120 Uploaded date: 12/6/2013 

scholarly journals Heat-Treated Wood Reinforced High Density Polyethylene Composites

2021 ◽  
Vol 72 (3) ◽  
pp. 219-229
Author(s):  
Kadir Karakuş ◽  
Deniz Aydemir ◽  
Gokhan Gunduz ◽  
Fatih Mengeloğlu
Keyword(s):  
Mechanical Properties ◽  
High Density Polyethylene ◽  
Wood Flour ◽  
Tensile Modulus ◽  
Treated Wood ◽  
High Density ◽  
Black Pine ◽  
Sem Images ◽  
Pine Wood ◽  
Heat Treated

This study investigated the effect of untreated and heat-treated ash and black pine wood flour concentrations on the selected properties of high density polyethylene (HDPE) composites. HDPE and wood flour were used as thermoplastic matrix and filler, respectively. The blends of HDPE and wood fl our were compounded using single screw extruder and test samples were prepared through injection molding. Mechanical properties like tensile strength (TS), tensile modulus (TM), elongation at break (EatB), fl exural strength (FS), fl exural modulus (FM) and impact strength (IS) of manufactured composites were determined. Wood fl our concentrations have significantly increased density, FS, TM and FM and hardness of composites while reducing TS, EatB and IS. Heat-treated ash and black pine fl our reinforced HDPE composites had higher mechanical properties than untreated ones. Composites showed two main decomposition peaks; one coming from ash wood flour (353-370 °C) and black pine wood fl our (373-376 °C), the second one from HDPE degradation (469-490 °C). SEM images showed improved dispersion of heat-treated ash and black pine wood flour. The obtained results showed that both the untreated and heat-treated ash/black pine wood flour have an important potential in the manufacture of HDPE composites.

scholarly journals Mechanical Properties of Aminosilane-Treated Wood Flour/PVC/Nanoclay Composites

Polymer Korea ◽  
2012 ◽  
Vol 36 (5) ◽  
pp. 573-578 ◽  
Author(s):  
Sol-Mon Park ◽  
Dae-Su Kim
Keyword(s):  
Mechanical Properties ◽  
Wood Flour ◽  
Treated Wood

Elastomer nanocomposites based on NBR/BR/nanoclay: morphology and mechanical properties

2013 ◽  
Vol 33 (2) ◽  
pp. 133-139 ◽  
Author(s):  
Shohreh Tolooei ◽  
Ghasem Naderi ◽  
Shirin Shokoohi ◽  
Sedigheh Soltani
Keyword(s):  
Mechanical Properties ◽  
Polymer Chains ◽  
Butadiene Rubber ◽  
Cure Characteristics ◽  
Fluid Uptake ◽  
Roll Mill ◽  
Dispersion State ◽  
Cure Time ◽  
Diffraction Patterns ◽  
Nanoclay Content

Abstract Ternary elastomer nanocomposites based on acrylonitrile butadiene rubber (NBR), polybutadiene rubber (BR) and two types of nanoclay (Cloisite 15A and Cloisite 30B) were prepared using a laboratory scale two-roll mill. The effects of nanoclay composition on the cure characteristics, mechanical properties and morphology of NBR/BR (50/50) nanocomposite samples containing 3, 5, 7 and 10 wt% nanoclay were investigated. According to the cure characteristics both types of nanoclay caused a reduction in the scorch time and optimum cure time of the nanocomposite compound. X-ray diffraction patterns of all samples suggested the intercalation of polymer chains into the silicate layers. This was confirmed by transmission electron microscopy (TEM) micrographs. Dynamic mechanical thermal analysis (DMTA) was utilized to study the dispersion state of nanoclay within the elastomer blend matrix. The results showed the development of mechanical properties with the establishment of interactions between nanoclay and polymer chains. Antiknock and brake fluid uptake were also reduced with increasing the nanoclay content.

scholarly journals Temperature-Dependent Creep Behavior and Quasi-Static Mechanical Properties of Heat-Treated Wood

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 968
Author(s):  
Dong Xing ◽  
Xinzhou Wang ◽  
Siqun Wang
Keyword(s):  
Mechanical Properties ◽  
Creep Behavior ◽  
Cell Walls ◽  
Treated Wood ◽  
Crosslinking Reaction ◽  
Depth Sensing ◽  
Temperature Dependent ◽  
Heat Treated ◽  
Static Mechanical ◽  
Static Mechanical Properties

In this paper, Berkovich depth-sensing indentation has been used to study the effects of the temperature-dependent quasi-static mechanical properties and creep deformation of heat-treated wood at temperatures from 20 °C to 180 °C. The characteristics of the load–depth curve, creep strain rate, creep compliance, and creep stress exponent of heat-treated wood are evaluated. The results showed that high temperature heat treatment improved the hardness of wood cell walls and reduced the creep rate of wood cell walls. This is mainly due to the improvement of the crystallinity of the cellulose, and the recondensation and crosslinking reaction of the lignocellulose structure. The Burgers model is well fitted to study the creep behavior of heat-treated wood cell walls under different temperatures.

Impact of Chemical Modification on the Physical and Mechanical Properties of Tropical Wood Material

2012 ◽  
Vol 576 ◽  
pp. 314-317
Author(s):  
Sinin Hamdan ◽  
M. Saiful Islam
Keyword(s):  
Mechanical Properties ◽  
Diazonium Salt ◽  
Treated Wood ◽  
Coupling Reaction ◽  
Physical And Mechanical Properties ◽  
Modulus Of Rupture ◽  
Ft Ir ◽  
Ir Analysis ◽  
D Values ◽  
Benzene Diazonium

Five types of selected tropical light hardwoods were chemically modified with benzene diazonium salt to improve their physical and mechanical properties. Benzene diazonium salt underwent a coupling reaction with wood which was confirmed through FT-IR analysis. The compressive modulus of the treated wood increased, whereas modulus of rupture was shown to decrease on treatment. The modified wood samples had higher hardness (Shore D) values compared to that of the control ones.

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