scholarly journals Use of Alternative Binder: Influence of Latex Content on Physical and Mechanical Properties of Laterite Stabilized with Raw Rubber Latex

Geomaterials ◽  
2020 ◽  
Vol 10 (03) ◽  
pp. 56-65
Author(s):  
Koffi Clément Kouadio ◽  
Owochi Quentin Aristide Offo ◽  
Conand Honoré Kouakou ◽  
Edjikémé Emeruwa
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Rubber Latex

Mechanical Properties of Natural Rubber and Chloroprene Rubber Latex Blends

2011 ◽  
Vol 239-242 ◽  
pp. 1601-1604 ◽  
Author(s):  
Xiao Xue Liao ◽  
Hai Sheng Tan ◽  
Ming Chao Luo ◽  
Bing Tang ◽  
Shuang Quan Liao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Physical And Mechanical Properties ◽  
Epoxidized Natural Rubber ◽  
Latex Film ◽  
Rubber Latex ◽  
Oil Resistance ◽  
Chloroprene Rubber

The effects of the ratios of natural rubber latex (NRL)and chloroprene rubber latex(CRL) and the type of compatibilizer on physical and mechanical properties of latex film were researched.The oil resistance of vulcanized latex film was tested. The compatibility of the latex blends was also analyzed by TG/DTG method.The results showed that properties of latex film were best when ratio of NRL/CRL was 75/25. As the CRL content increased, oil resistance of latex film was improved. Epoxidized natural rubber latex improved compatibility of NRL and CRL blends.

Microstructure and Mechanical Properties of Cement/Fly Ash/Natural Rubber Composites

2017 ◽  
Vol 866 ◽  
pp. 195-198
Author(s):  
Rakchanok Promudom ◽  
Suparut Narksitipan ◽  
Nittaya Jaitanong
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Portland Cement ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Physical And Mechanical Properties ◽  
Ammonia Solution ◽  
Rubber Latex ◽  
Water To Cement Ratio ◽  
Natural Rubber Composites

The physical and mechanical properties of Portland cement (PC) - natural rubber latex (NRL) - fly ash (FA) composites have been investigated. The latex per cement ratios that use in this experiment are 0, 5, 7.5 and 10% by weight of cement. Portland cement (PC) was partially replaced with fly ash 0-40% by weight of binder. Water to cement ratio were used in range of 0.305-0.385 (by weight not include water in latex). Nonionic surfactant was added in cement before mixed with natural rubber latex. In addition, to provide latex from natural rubber latex, the ammonia solution is added into natural rubber. The specimens were packing into an iron mold which sample size of 4x4x16 cm3. Moreover, the PC-NRL-FA composites were cured in water for 7 and 28 days at room temperature before measurement. Then, mechanical properties (flexural strength) and microstructure were studied.

scholarly journals Modification of nitrile butadiene rubber at the stage of its allocation

2018 ◽  
Vol 80 (3) ◽  
pp. 323-329
Author(s):  
V. A. Sedykh ◽  
O. V. Karmanova ◽  
E. V. Koroleva
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Mechanical Characteristics ◽  
Physical And Mechanical Properties ◽  
Butadiene Rubber ◽  
Rubber Latex ◽  
Retention Capacity ◽  
Elongation At Break ◽  
Dry Mixing ◽  
Selection Of

Search for additives that increase the wear resistance of rubbers is relevant. It is known that the introduction of hollow corundum microspheres (NCM) into rubber reduces the wear of rubber products. The uniform distribution of small amounts of microspheres in rubber by traditional "dry" mixing in a rubber mixer or on rollers is difficult. Microspheres were introduced into rubber at the stage of its separation from latex. The work consisted in the selection of thickeners capable of holding the NSM in rubber latex SCN-18SNT at the stage of its coagulation, and evaluation of physical and mechanical properties of rubbers in the presence of NCM. The retention capacity of thickeners of polyacrylamide (PAA), carboxymethylcellulose (CMC) and polyvinyl alcohol (PVA) was determined. Thickened latex was coagulated in the presence of microspheres with polymeric coagulant and sulfuric acid. When filling the polymer with microspheres, it is preferable to use a PAA thickener. The yield of microspheres in rubber using thickeners PAA, CMC and PVA was 71.1, 66.5 and 38.7% , respectively. The physico-mechanical characteristics of rubbers based on SKN-18SNT in the presence of microspheres introduced both as a "dry" method in rubber and at the stage of its isolation from latex are determined. The presence of microspheres in an amount of 4.4-4.7% by weight. on rubber, did not affect the hardness and elasticity of rebound rubbers. It has been confirmed that the presence of microspheres, especially those introduced from the latex rubber release stage, provides an increase in abrasion resistance. In turn, the presence of microspheres in rubber with traces of polyacrylamide provided an increase in the resistance of rubbers to tearing, the modulus at 100 and 200% elongation with a decrease in the elongation at break.

scholarly journals Enhancement of Properties of Coir Geotextiles by Natural Rubber Latex Coating

CORD ◽  
2011 ◽  
Vol 27 (1) ◽  
pp. 8
Author(s):  
U.S. Sarma
Keyword(s):  
Mechanical Properties ◽  
Comparative Study ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Physical And Mechanical Properties ◽  
Rubber Latex ◽  
Engineering Applications ◽  
Superior Mechanical Properties ◽  
Bio Engineering

Coir geotextiles find application in revegetation of slopes by stabilizing the soil through erosion control. It has been found that the longevity of coir geotextiles although highest among all the natural fibres, it is required to last for at least 5 years so as to sustain the vegetation on the slopes for a long term solution. Normally it is found that coir geotextiles lose their 50% strength in 6 months in contact with soil, therefore it is required to strengthen the coir geotextiles. This work involves the coating of coir geotextiles with natural rubber latex which could enhance the longevity of coir geotextiles in various civil/bio engineering applications. The rubber latex coated coir geotextiles which are eco-friendly have superior mechanical properties and better durability compared to the conventional uncoated coir geotextiles. This paper reports the coating of coir geotextile using natural rubber latex and a comparative study of the physical and mechanical properties of the treated and untreated coir geotextiles.

Physical and Mechanical Properties of Cement/Natural Rubber Latex/Rice Husk Ash Composites

2015 ◽  
Vol 804 ◽  
pp. 124-128
Author(s):  
Nittaya Jaitanong ◽  
Tanapong Chaipunti
Keyword(s):  
Mechanical Properties ◽  
Portland Cement ◽  
Natural Rubber ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Natural Rubber Latex ◽  
Physical And Mechanical Properties ◽  
Ammonia Solution ◽  
Rubber Latex ◽  
Cement Ratio

The microstructure and mechanical properties of Portland cement (PC)- natural rubber latex (NRL)- rice husk ash (RHA) composites have been investigated. The proportions of PC-NRL-RHA composites with NRL to cement ratio (NRL/C) that use in this experiment were 0, 0.10, 0.15 and 0.20 respectively. Portland cement (PC) was partially replaced with rice husk ash at 20% by weight of binder. The rice husk ash (RHA) was ground for 180 minutes before using. Water to cement ratio (W/C) equal of 0.5 by weight not include water in NRL. Nonionic surfactant was added in cement before mixed with NRL. In addition, to provide latex from natural rubber, the ammonia solution is added into natural rubber. The specimens were casting in standard mold which samples size of 50x50x50 and 40x40x160 mm3 respectively. Moreover, the PC-NRL-RHA composites were cured in water for 3, 7 and 28 days at room temperature before measurement. Then, mechanical properties (compressive strength and flexural strength) and microstructure were studied.

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

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