Abstract
：The rubber from rubber tree strain reyan 8-79 (hainan), zhanshi 218-6 (guangdong), yunyan 73-46 and yunyan 75-11 (yunnan) were tested to determine the physical and chemical properties, processing properties of raw rubber and physical and mechanical properties of vulcanized rubber. The results showed that raw rubber from different tree strains had different physical and chemical properties, processing properties,andthe physical and mechanical properties of vulcanized rubber were different as well. Yunyan 75-11 had the highest mooney viscosity, Reyan 8-79 had the highest protein content, Zhanshi 218-6 had the best tensile and tearing strength, Yunyan 73-46 had small elastic modulus, large loss factor and good processing properties.
Highlights
Natural rubber is made of rubber latex secreted by the artificial cultivated rubber tree through solidification, drying and processing [1,2]
Natural rubber is a kind of natural, macromolecular, biosynthetic compounds, and the chemical composition of latex is influenced by rubber tree strain, age, soil, climate and tapping system [3-7].The chemical composition of latex has influence on the performance of the latex, while latex products are mainly composed of mixed latex, so its performance is mainly affected by the strain of natural rubber in use
Mooney viscosity according to GB/T 1232.1-2000; P0 according to GB/T3510-2006; plastic retention (PRI) according to GB/T3517-2002; Nitrogen content according to GB/T8088-2008; Constant stress, breaking elongation and tensile strength according to
Summary
Natural rubber is made of rubber latex secreted by the artificial cultivated rubber tree through solidification, drying and processing [1,2]. Natural rubber is a kind of natural, macromolecular, biosynthetic compounds, and the chemical composition of latex is influenced by rubber tree strain, age, soil, climate and tapping system [3-7].The chemical composition of latex has influence on the performance of the latex, while latex products are mainly composed of mixed latex, so its performance is mainly affected by the strain of natural rubber in use. The raw rubber and vulcanized rubber of Yunnan rubber planting area promotion strains (Yunyan 73-46 and 75-11), Hainan rubber planting area promotion strains (Reyan 8-79), Guangdong rubber planting area promotion strains (Zhanshi 218-6) are studied, in order to understand the properties and processing properties of different strains natural rubber, further to provide theoretical basis for selection of high quality natural rubber materials when processing natural rubber latex products. Preparation of raw rubber kg Natural rubber latex, added 2% acetic acid, fully mixed, let it on stand, granulated when latex coagulation, dried in oven with the constant temperature of 70 °C, brought it out when the glue sample with pale yellow appearance and without white spots
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
