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Fig. 6. Tension set and compression set of the TPNRs. Fig. 5. Relationship between degree of crystallinity of HDPE and blend ratio. The effect of blend ratio on tensile properties, hardness and tear strength of the TPNRs is summarized in Table 2. Unlike the results reported by Nakason et al. [9], the tensile strength tends to increase gradually with increasing NRP/ HDPE ratio. The explanation is given by the phenomenon of strain-induced crystallization, as previously mentioned. It should be noted that the addition of NRP into HDPE matrix could interfere with the degree of crystallinity in HDPE. The The influence of blend ratio on tension set and compression set is depicted in Fig. 6. With increasing NRP content, significant improvement of elasticity is achieved as clearly observed from the continuous reductions in both tension set and compression set. Again, the improved elasticity is attributed mainly to the combination of the

Figure 6 Tension set and compression set of the TPNRs. Fig. 5. Relationship between degree of crystallinity of HDPE and blend ratio. The effect of blend ratio on tensile properties, hardness and tear strength of the TPNRs is summarized in Table 2. Unlike the results reported by Nakason et al. [9], the tensile strength tends to increase gradually with increasing NRP/ HDPE ratio. The explanation is given by the phenomenon of strain-induced crystallization, as previously mentioned. It should be noted that the addition of NRP into HDPE matrix could interfere with the degree of crystallinity in HDPE. The The influence of blend ratio on tension set and compression set is depicted in Fig. 6. With increasing NRP content, significant improvement of elasticity is achieved as clearly observed from the continuous reductions in both tension set and compression set. Again, the improved elasticity is attributed mainly to the combination of the

Related Figures (11)

Fig. 1. SEM micrographs of the NRP at different magnifications (a) x 1,000 and (b) x 10,000. TPNRs were prepared by blending NRP with HDPE in a laboratory-sized internal mixer (Brabender Plasticorder High ammonia natural rubber latex (HA-grade) was obtained from Thai rubber latex corporation (Thailand) PCL. Zinc oxide was supplied by Univenture PCL. Potassium hydroxide and ammonia solution were supplied by Bang trading 1992 (Thailand), Co., Ltd. Wingstay L was obtained from DKSH Co., Ltd. Zinc diethyldithiocarbamate and sulfur were supplied by Reliance Technochem (Flexsys) Thailand
Fig. 1. SEM micrographs of the NRP at different magnifications (a) x 1,000 and (b) x 10,000. TPNRs were prepared by blending NRP with HDPE in a laboratory-sized internal mixer (Brabender Plasticorder High ammonia natural rubber latex (HA-grade) was obtained from Thai rubber latex corporation (Thailand) PCL. Zinc oxide was supplied by Univenture PCL. Potassium hydroxide and ammonia solution were supplied by Bang trading 1992 (Thailand), Co., Ltd. Wingstay L was obtained from DKSH Co., Ltd. Zinc diethyldithiocarbamate and sulfur were supplied by Reliance Technochem (Flexsys) Thailand
* phr: parts per hundred of rubber Formulation of the pre-vulcanized natural rubber latex. Table 1
* phr: parts per hundred of rubber Formulation of the pre-vulcanized natural rubber latex. Table 1
Fig. 2. Plot of complex viscosity versus angular frequency of the TPNRs.
Fig. 2. Plot of complex viscosity versus angular frequency of the TPNRs.
Fig. 4. Stress-strain curves of the TPNRs.
Fig. 4. Stress-strain curves of the TPNRs.
Fig. 3. Storage modulus (G’) as a function of angular frequency of the TPNRs.
Fig. 3. Storage modulus (G’) as a function of angular frequency of the TPNRs.
Mechanical properties of NRP/HDPE at various blend ratios. Table 2
Mechanical properties of NRP/HDPE at various blend ratios. Table 2
Mechanical properties of the virgin and the recycled TPNRs. Table 3
Mechanical properties of the virgin and the recycled TPNRs. Table 3
Fig. 7. SEM micrographs of the TPNRs prepared from various blend ratios (a) 60/40, (b) 70/30, (c) 80/20 and (d) 90/10.
Fig. 7. SEM micrographs of the TPNRs prepared from various blend ratios (a) 60/40, (b) 70/30, (c) 80/20 and (d) 90/10.
Fig. 8. Effect of recycling cycle on tension set of the TPNRs.
Fig. 8. Effect of recycling cycle on tension set of the TPNRs.
Related topics:
Materials EngineeringMechanical EngineeringMorphologyPolymer BlendsTear Strength
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