Rheological Behaviour of Short Carbon Fiber Filled Thermoplastic Elastomeric Blends of Natural Rubber and High Density Polyethylene

1993 ◽  
Vol 25 (1) ◽  
pp. 46-58 ◽  
Author(s):  
D. Roy ◽  
A.K. Bhattacharya ◽  
B.R. Gupta
Keyword(s):  
Carbon Fiber ◽  
Natural Rubber ◽  
High Density Polyethylene ◽  
Rheological Behaviour ◽  
High Density ◽  
Short Carbon Fiber ◽  
Short Carbon

Time-dependent uniaxial piezoresistive behavior of high-density polyethylene/short carbon fiber conductive composites

2004 ◽  
Vol 19 (9) ◽  
pp. 2625-2634 ◽  
Author(s):  
Q. Zheng ◽  
J.F. Zhou ◽  
Y.H. Song
Keyword(s):  
Carbon Fiber ◽  
High Density Polyethylene ◽  
Volume Fraction ◽  
High Density ◽  
Constant Stress ◽  
Time Dependent ◽  
Short Carbon Fiber ◽  
Conductive Composites ◽  
Short Carbon ◽  
Resistance Relaxation

Short carbon fiber (SCF) filled high-density polyethylene conductive composites were studied in terms of time-dependent piezoresistive behaviors. The time-dependent change of resistance under constant stress or strain was found to be the succession of the previous pressure-dependent piezoresistance. Depending on the filler volume fraction and the level of the constant stress or strain, resistance creep and resistance relaxation with different directions were observed. An empirical expression similar to the Burgers equation could be applied to fit the data for both the resistance creep and the resistance relaxation. The fitted relaxation time as a function of pressure showed that there exist two competing processes controlling the piezoresistive behavior and its time dependence. Mechanical creep and stress relaxation of the composites were also studied, and a comparison with the time-dependent resistance implied that there is a conducting percolation network attributed to the physical contacts between SCF and a mechanical network formed by the molecular entanglement or physical crosslinking of the polymer matrix and the interaction between the filler and the matrix. It is believed that the two networks dominate the electrical and the mechanical behaviors, respectively.

scholarly journals Study on the effect of carbon fiber addition on the properties of rice straw-plastic composites

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 3411-3421
Author(s):  
Xuesong Guan ◽  
Dingguo Zhou ◽  
Mingzhu Pan ◽  
He Chen ◽  
Chunxiang Ding
Keyword(s):  
Carbon Fiber ◽  
Rice Straw ◽  
Carbon Fibers ◽  
High Density Polyethylene ◽  
High Density ◽  
Test Machine ◽  
The Matrix ◽  
Infrared Spectrometer ◽  
Short Carbon ◽  
Skeleton Structure

Short carbon fiber (SCF), rice straw powder, and high-density polyethylene (HDPE) were melted, mixed, and compounded into composites by compression molding. The effects of carbon fiber content on the mechanical properties of rice straw-high density polyethylene composites (RHCs) were studied. The carbon fibers were characterized by a universal capability test machine (UCTM), scanning electron microscope (SEM), DMA dynamic mechanical analyzer, and a Fourier infrared spectrometer. The results showed that the addition of carbon fiber was beneficial to reduce the creep of RHCs. Meanwhile, the carbon fibers were broken after strength testing. The functional group types of rice straw WPC composites did not change, and the skeleton structure of WPC materials was still retained. When the content of carbon fibers was 9%, a large number of carbon fibers were surrounded by the HDPE matrix; the fibers were broken and rarely pulled out. The results showed that good interfacial bonding took place between the carbon fibers and the composites. The maximum tensile strength of the RHC/S9 was 15.15 MPa, which was 20.7% higher than that of default RHC, and the modulus of elasticity was 52.5% higher than that of default RHC. However, due to the large content of carbon fiber, the distribution of the carbon fibers was uneven in the matrix, and the toughness was reduced.

Sign in / Sign up

Export Citation Format

Share Document