Effects of Different Particle Sizes and its Blend Ratios of Recycled Latex Glove Filled Natural Rubber Compound: Cure Characteristics and Swelling Test

2014 ◽  
Vol 679 ◽  
pp. 281-286
Author(s):  
S.M. Hazwan ◽  
N.Z. Noriman ◽  
S.T. Sam ◽  
Che Mohd Ruzaidi ◽  
M.F. Omar ◽  
...  
Keyword(s):  
Particle Sizes ◽  
Maximum Torque ◽  
Latex Glove ◽  
Curing Characteristics ◽  
Roll Mill ◽  
Cure Time ◽  
Fine Size ◽  
Efficient Processing ◽  
Recycled Rubber ◽  
Blend Ratios

The effects of different particle sizes of recycled latex glove (rLG) on curing characteristics of SMR L were examined. Two different size ranges of rLG particles, i.e., 100-300μm, 2-3 cm were used in this study. The SMRL/rLG composition of 100/0, 100/5, 100/15, 100/25, 100/35 and 100/50 were prepared using a two roll-mill at room temperature. The characterization results of the blends shows that scorch time, t2, and cure time t90 of the SMRL/rLG blends decreased with increased rLG content as well as decreasing sizes of rLG particles due to the existence of cross-linked precursors and unreacted curative in the recycled rubber. Among all blend ratios, the SMRL/rLG blends with fine size of rLG particles exhibit lowest minimum torque (ML) compared with the coarse size of it in SMRL/rLG compound which resulted in more efficient processing. The maximum torque (MH) of SMRL/rLG compound shows a declining trend with increasing rLG content probably due to the poor interactions in SMRL/rLG compound. As the particle size decreased, the contact surface area increased which provided more efficient interfacial bonds, leading to better properties. Results indicated that the fine size of rLG filled SMR L contributed to the better properties compared to coarser size of rLG filled SMR L mainly at 15 phr of rLG.Key words: Recycled – rubber – latex – glove – SMR L

The Influence of Cure Characteristics and Crosslink Density of Virgin Acrylonitrile Butadiene Rubber/Recycled Acrylonitrile Butadiene Rubber (vNBR/rNBR) Blends

2013 ◽  
Vol 594-595 ◽  
pp. 735-739 ◽  
Author(s):  
Muhammad Ridhwan Jamalul Nasir ◽  
N.Z. Noimam ◽  
Hanafi Ismail ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Rosniza Hamzah
Keyword(s):  
Crosslink Density ◽  
Butadiene Rubber ◽  
Maximum Torque ◽  
Cure Characteristics ◽  
Acrylonitrile Butadiene Rubber ◽  
Roll Mill ◽  
Increasing Trend ◽  
Cure Time ◽  
Efficient Processing ◽  
Blend Ratios

Cure characteristics and crosslink density of virgin acrylonitrile butadiene rubber/recycled acrylonitrile butadiene rubber (vNBR/rNBR) blends were studied. Three different size ranges of rNBR particles, i.e., 150 - 350 μm, 2.0-15.0 mm, and 5-10 cm were used in this study. The vNBR/rNBR blends with blend ratios of 95/5, 85/15, 75/25, 65/35, and 50/50 were prepared using a two roll-mill at room temperature. The characterization results of the blends show that scorch time, t2, of the vNBR/rNBR blends decreased with increased rNBR content as well as decreasing sizes of rNBR particles while cure time, t90of the vNBR/rNBR blends increase with increased rNBR content as well as increasing sizes of rNBR particles. Among all blend ratios, the vNBR/rNBR blends with smallest size of rNBR particles exhibit lowest minimum torque (ML) compared with the bigger particle sizes of it in vNBR/rNBR blends which resulted in more efficient processing. The maximum torque (MH) of all vNBR/rNBR blends shows the inclining trend with increased rNBR. The cross-linking density of vNBR/rNBR blends also show an increasing trend with increasing rNBR content.

The Effect of Recycled Nitrile Glove Filled Epoxidised Natural Rubber 50 on Cure Characteristics and Swelling Properties

2014 ◽  
Vol 679 ◽  
pp. 300-304
Author(s):  
Z. Norhafizah ◽  
N.Z. Noriman ◽  
A.M. Mustafa Al Bakri ◽  
M.H. Fatin ◽  
J.N.M. Ridhwan ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Maximum Torque ◽  
Swelling Behaviour ◽  
Swelling Properties ◽  
Cure Characteristics ◽  
Roll Mill ◽  
Cure Time ◽  
Fine Size ◽  
Minimum Torque

The effects on properties of recycle nitrile glove (NBRr) filled Epoxidised Natural Rubber (ENR 50) was studied. Compound was prepared by two roll mill at five different compositions of NBRr (5, 15, 25, 35 and 50 phr). Two different size ranges of NBRr particles i.e., 300μm-700μm (fine) and 3cm-5cm (coarse) were used. The properties of cure characteristics (cure time, scorch time, minimum torque, and maximum torque) and swelling test were determined. Results indicated that the incorporation of fine size NBRr loading on ENR 50 provides better improvement both on cure characteristics and swelling behaviour mainly at 15 phr of NBRr compared to the coarser size NBRr particles.

The Influences of Cure Characteristics and Physical Properties of Recycled Nitrile Glove Filled Epoxidized Natural Rubber Compounds (NBRr/ENR25)

2015 ◽  
Vol 754-755 ◽  
pp. 125-129
Author(s):  
A.A. Afiratul ◽  
N.Z. Noriman ◽  
S.T. Sam ◽  
Hanafi Ismail ◽  
Mohd Firdaus Omar
Keyword(s):  
Physical Properties ◽  
Hardness Test ◽  
Crosslinking Density ◽  
Cure Characteristics ◽  
Rubber Compounds ◽  
Curing Characteristics ◽  
Roll Mill ◽  
Cure Time ◽  
Fine Size ◽  
Cure Characterization

The effects on curing characteristics and physical propertiesof recycled nitrile glove (NBRr) filled epoxidized natural rubbers (ENR25) were examined. Two different size ranges of NBRr particles, i.e., S1 (250μm-500μm) and S2 (2cm-5cm) were used in this study. The NBRr/ENR25 compounds with five different compositions of NBRr (5, 15, 25, 35 and 50 phr) were prepared using a two roll-mill at room temperature. The result of cure characterization show that scorch time, t2 and cure time t90 of the NBRr/ENR25decreased with the increased of NBRr content due to the existence of crosslinked precursors and unreacted curativein the recycled rubber.NBRr/ENR25 compounds with fine size, S1 of NBRr particles exhibit lower minimum torque (ML) compared with the coarse size, S2 which resulted in more efficient processing. The maximum torque (MH) of all NBRr/ENR25 compounds show the increasing trend with increased NBRr content probably due to the good interactions in NBRr/ENR25 compounds. For physical properties, NBRr/ENR25 compounds with fine size, S1 of NBRr particles exhibited the higher hardness and crosslinking density at all compound ratios. The results overall indicated that the NBRr/ENR25 with fine size, S1 of NBRr particles show better cure characteristics and physical properties (crosslink density and hardness test) compared to coarse size, S2 of NBRr particles.

The Effect of Wollastonite on Curing Characteristics, Tensile and Morphology of Natural Rubber Compounds

2013 ◽  
Vol 858 ◽  
pp. 199-204
Author(s):  
Hoang T.B. Diep ◽  
Hanafi Ismail ◽  
A. Rashid Azura ◽  
Ng. Van Tu ◽  
Tsutomu Takeichi
Keyword(s):  
Natural Rubber ◽  
Tensile Modulus ◽  
Fracture Surface Morphology ◽  
Maximum Torque ◽  
Elongation At Break ◽  
Rubber Compounds ◽  
Curing Characteristics ◽  
Roll Mill ◽  
Cure Time ◽  
Scanning Electron

Wollastonite filled natural rubber (NR) compounds were prepared using a laboratory two-roll mill. The filler was loaded into NR at different loading, i.e., 0, 10, 20, 30 and 40 part per hundred of rubber (phr). The effect of wollastonite on curing characteristic, tensile and morphology properties has been studied. Results indicated that the cure time (t90), scorch time (t2), tensile strength and elongation at break of the NR compounds decrease with increasing wollastonite loading but the maximum torque, tensile modulus M100 (stress at 100% elongation), M300 (stress at 100% elongation) increase with increasing wollastonite loading. The fracture surface morphology of the NR compounds was investigated with a scanning electron microscope (SEM). More filler detachment from NR surface was observed with increasing wollastonite loading.

Properties of Natural Rubber/Styrene Butadiene Rubber/Recycled Nitrile Glove (NR/SBR/rNBRg) Blends: The Effects of Recycled Nitrile Glove (rNBRg) Particle Sizes

2016 ◽  
Vol 673 ◽  
pp. 151-160 ◽  
Author(s):  
N.Z. Nik Yahya ◽  
Nik Noriman Zulkepli ◽  
Hanafi Ismail ◽  
Sam Sung Ting ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
...  
Keyword(s):  
Particle Size ◽  
Crosslink Density ◽  
Styrene Butadiene Rubber ◽  
Particle Sizes ◽  
Butadiene Rubber ◽  
Maximum Torque ◽  
Curing Characteristics ◽  
Cure Time ◽  
Styrene Butadiene ◽  
Minimum Torque

The effects of different particle sizes of recycled nitrile glove (rNBRg) on curing characteristics and physical properties of natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) blends were investigated. The particle sizes of rNBRg were differentiated by the method of sizing. S1 was obtained by cutting the rNBRg into smaller sheets; S2 was obtained by passing rNBRg through 2 rolls mill for 10 times; and S3 was obtained by passing rNBRg through 2 rolls mill for 10 times and then mechanically grinded. NR/SBR/rNBRg blends were prepared at 50/30/20 composition using two roll mill at room temperature, with different particle sizes, rNBRg (S1), rNBRg (S2) and rNBRg (S3). Curing characteristics (scorch time, cure time, minimum torque and maximum torque), tensile properties and physical properties (crosslink density, resilience and hardness) of the blends were investigated. Results indicated that scorch time, cure time and minimum torque decreased as the rNBRg particle size decreased, while maximum torque and crosslink density increased. Tensile strength of the blends decreased as the rNBRg particle size reduced, which explained the formation of holes on the surfaces of tensile fracture, observed by scanning electron microscope. The rigidity of NR/SBR/rNBRg blends increased when smaller rNBRg particles were used, which explained the increased in hardness and decreased in resilience of the blends.

Effect of Recycled Nitrile Glove (rNBRg) Particle Sizes on Curing Characteristics and Physical Properties of Natural Rubber/Styrene Butadiene Rubber/Recycled Nitrile Glove (NR/SBR/rNBRg) Blends

2015 ◽  
Vol 815 ◽  
pp. 54-58 ◽  
Author(s):  
N.Z. Nik Yahya ◽  
Nik Noriman Zulkepli ◽  
Hussin Kamarudin ◽  
Hanafi Ismail ◽  
Sam Sung Ting ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Crosslink Density ◽  
Styrene Butadiene Rubber ◽  
Particle Sizes ◽  
Butadiene Rubber ◽  
Maximum Torque ◽  
Curing Characteristics ◽  
Cure Time ◽  
Styrene Butadiene ◽  
Minimum Torque

Effects of different particle sizes of recycled nitrile glove (rNBRg) on curing characteristics and physical properties of natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) blends were studied. The particle sizes of rNBRg were differentiated by the method of producing. S1 was obtained by cutting the rNBRg (whole glove) into smaller sheet; S2 was obtained by passing rNBRg through 2 rolls mill for 10 times; S3 was obtained by passing rNBRg through 2 rolls mill for 10 times and then mechanically grinded. NR/SBR/rNBRg blends were prepared at 50/30/20 composition using two roll mill at room temperature, with different particle sizes, rNBRg (S1), rNBRg (S2) and rNBRg (S3). Scorch time, cure time, minimum torque, maximum torque, crosslink density and hardness of the blends were examined. Results indicated that scorch time, cure time and minimum torque decreased as the rNBRg particle size decreased, while maximum torque and crosslink density increased. The rigidity of NR/SBR/rNBRg blends increased when smaller rNBRg particles were used, which explained the increased in hardness and decreased in resilience of the blends.

Natural Rubber/Styrene Butadiene Rubber/Recycled Nitrile Glove (NR/SBR/rNBRg) Ternary Blend: Curing Characteristics and Swelling Test

2013 ◽  
Vol 594-595 ◽  
pp. 634-638 ◽  
Author(s):  
N.Z. Nik Yahya ◽  
N.Z. Noimam ◽  
Hanafi Ismail ◽  
Mohd Arif Anuar Mohd Salleh ◽  
Santiagoo Ragunathan
Keyword(s):  
Natural Rubber ◽  
Swelling Behavior ◽  
Styrene Butadiene Rubber ◽  
Ternary Blend ◽  
Butadiene Rubber ◽  
Maximum Torque ◽  
Curing Characteristics ◽  
Cure Time ◽  
Styrene Butadiene ◽  
Minimum Torque

Curing characteristics and swelling behavior of natural rubber/styrene butadiene rubber/recycled nitrile glove (NR/SBR/rNBRg) blends were investigated. Eleven composition ratio; 50/50/0, 50/40/10, 50/30/20, 50/20/30, 50/10/40, 50/0/50, 40/50/10, 30/50/20, 20/50/30, 10/50/40, and 0/50/50 of SMRL/SBR/rNBRg with the size of rNBRg ; 2.5 3.0 cm2 were prepared by using two roll mill at room temperature. Cure characteristics such as scorch time,t2, cure time,t90, minimum torque, ML, maximum torque, MH, and swelling behavior of SMRL/SBR/rNBRg ternary blends were examined. Results indicated that the scorch time and maximum torque of the NR/SBR/rNBRg blends decreased with increasing rNBRg content. The minimum torque of the blends increased as rNBRg content increased. The cure time of NR/SBR/rNBRg blends show a unique trend, which are depending on the domain rubber content. The increment in rNBRg content decreased the crosslink density of NR/SBR/rNBRg blends.

Curing characteristics and mechanical and aging properties of ethylene propylene diene monomer/calcium carbonate/bentonite hybrid composites

2016 ◽  
Vol 49 (5) ◽  
pp. 397-407 ◽  
Author(s):  
Nurus Sakinah Che Mat ◽  
Hanafi Ismail ◽  
Nadras Othman
Keyword(s):  
Fatigue Life ◽  
Calcium Carbonate ◽  
Hybrid Composites ◽  
Partial Replacement ◽  
Ethylene Propylene Diene Monomer ◽  
Ethylene Propylene ◽  
Curing Characteristics ◽  
Roll Mill ◽  
Cure Time ◽  
Loading Ratio

Ethylene propylene diene monomer (EPDM)/calcium carbonate/bentonite (Bt) hybrid composites were prepared via a laboratory size two-roll mill. In this work, loading ratio of calcium carbonate to Bt was varied, that is, 30/0, 5/25, 15/15, 25/5 and 0/30 parts per hundred rubber. The effect of partial replacement of calcium carbonate with Bt on the curing characteristics, tear properties, morphology, aging and fatigue life of the hybrid composites was studied. On increasing Bt loading, cure time, scorch time and maximum torque of EPDM/calcium carbonate (CaCO3)/Bt composites decreased, whereas minimum torque increased. The tear strength and fatigue life of EPDM/CaCO3/Bt hybrid composites showed improvement with increasing Bt loading. The results also showed that the retention of aging of EPDM/CaCO3/Bt hybrid composites decreased with increasing Bt loading.

Curing Characteristics and Mechanical Properties of Rattan Filled Natural Rubber Compounds

2011 ◽  
Vol 471-472 ◽  
pp. 845-850 ◽  
Author(s):  
Komethi Muniandy ◽  
Hanafi Ismail ◽  
Nadras Othman
Keyword(s):  
Natural Rubber ◽  
Tensile Modulus ◽  
Filler Loading ◽  
Morphological Properties ◽  
Rubber Matrix ◽  
Rubber Compound ◽  
Curing Characteristics ◽  
Roll Mill ◽  
Cure Time ◽  
Rubber Filler

Rattan for its potential as a new type of filler was investigated in natural rubber (NR) compounds. Natural rubber (NR) compounds were prepared by the incorporation of rattan at different loadings into a natural rubber matrix with a laboratory size two roll mill. The effect of rattan loading as filler on curing characteristics, tensile properties, morphological properties using scanning electron microscopy (SEM) and rubber–filler interaction of rattan filled natural rubber compound were studied in the filler loading range of 0 to 30 phr. The results indicate that the scorch time (ts2) and cure time (t90) shorten with increasing filler loading, whereas the maximum torque (MH) showed an increasing trend. As the filler loading increases, the tensile strength and elongation at break decreases whilst tensile modulus; stress at 100 % elongation and stress at 300 % elongation increased. The rubber filler interactions of the rubber compound decreased with increasing filler loading. SEM studies indicate that the increasing rattan loading weakens the rubber-rattan interactions.

Tensile Properties and Morphology of Recycled Latex Glove Filled Epoxidized Natural Rubber (ENR50) Compounds

2014 ◽  
Vol 660 ◽  
pp. 306-311
Author(s):  
A.A. Afiratul ◽  
N.Z. Noimam ◽  
C.M. Ruzaidi ◽  
Sung Ting Sam ◽  
M.F. Omar ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Natural Rubber ◽  
Tensile Properties ◽  
High Surface ◽  
Weight Ratio ◽  
Epoxidized Natural Rubber ◽  
Elongation At Break ◽  
Latex Glove ◽  
Roll Mill ◽  
Fine Size

The effects on the properties of recycled latex glove (RL-G) filled Epoxidized Natural Rubber (ENR 50) were studied. Both compounds were prepared by two roll mill at five different compositions of RL-G (5, 15, 25, 35 and 50 phr). The size range of RL-G particles i.e., S1 (300μm-700μm) and S2 (3cm-5cm) were used. The properties such as tensile properties (tensile strength, elongation at break, and stress at 100% elongation) and morphology studies were determined. The results indicated that the both size, S1 and S2 of recycled latex glove filled ENR 50 blends exhibited an increased in tensile strength and elongation at break for increasing weight ratio of RL-G. Scanning electron microscopy (SEM) of the fracture surfaces shows that the fine size, S1 RL-G/ENR50 exhibited high surface roughness and matrix tearing lines than the coarse size, S2 thus improving the compatibility of RL-G/ENR50 compounds. The results overall indicated that the fine size, S1of RL-G filled ENR50 contributed to the better properties such as tensile strength and surface morphology compared to the coarse size, S2 mainly at 15 phr of RL-G content.

Sign in / Sign up

Export Citation Format

Share Document