Journal of the Rubber Research Institute of Sri Lanka
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Item Preparation of flame resistant rubberised coir(Rubber Research Institute. Agalawatta, 1987) Coomarasamy, A.Item A linear gel/polymer system based on radiation prevulcanized natural rubber latex(Rubber Research Institute. Agalawatte, 1985) Karunaratne, S.W.; Fernando, W.S.E.Item Effect of moisture on the processability and physical properties of natural rubber(Rubber Research Institute. Agalawatte, 1985) Perera, M.C.S.; Siriwardena, T.A.S.The natural rubber absorbs moisture when exposed to high humuditiess. The presence of moisture is found to reduce the mastication efficiency of rubbers resulting in stocks with high Mooney viscosities. The green strenth and the die swell increases as a result. It has also been found that this affects the milling efficiency resulting in heterodlsperse stocks. These effects could be climinated by further milling. The presence of moisture, however, affects directly, the Mooney scorch time of conventional mixes, the tensile strength, resilience and heat build - upItem Evaluation of performance of flat bark crepe, scrap crepe and RSS in tyre retread compounds(Rubber Research Institute. Agalawatta, 1993) Kalyani, N.M.V.; Gunewardena, A.Item An economic evaluation of the use of rainguards(Rubber Research Institute. Agalawatta, 1993) Rodrigo, V.H.L.; Herath, P.H.M.U.; Nugawela, A.Use of rainguards can minimize the loss of tappping days and hence the loss in rubber crop. A simple model was developed to study different components determinig the profitability of using rainguard is discussed. Price of rubber, yield potential of a plant and tapping wage rate were identified as most important factors which determine the worthiness of the use of rainguards. Sealent price is also a major factor in deciding profitability. If the price of scalent is less than Rs. 20/= per kg, the profilability from both the apron and the gutter types is sameItem Test methods for rubber bleaching agents(Rubber Research Institute. Agalawatta, 1991) Sarath Kumara, P.H.Item A study of some of the properties of blends of polypropylene and chemical incorporated granular natural rubber(Rubber Research Institute. Agalawatta, 1994) De Silva, K.G.K.; Ranjith, S.L.G.; Warnapura, S.S.Thermoplastic elastormers of plastics natural rubber (TPNR) are generally produced by blending plastics with natural rubber (in bale form) using traditional banbury type internal mixers plastics extruders. This involves high energy consumption also high capital costs of both rubber plastics processing machinery. The production of Thermoplastic elastomers on a continuous basis using extruder blenders has been less applicaple to TPNR blends because natural rubber is not readily or widely available in the required granular form in natural rubber consuming countries. The manufacture of different types of granular rubber in our laboratories has not only made possible the blending of thermoplastics with natural rubber on a continuous basis but also paved the way for producing TPNR blends with improved properties. In this publication the production of different types of granular rubber, the processing characteristics of various compositions of polypropylene natural rubber blends the end product performance of these blends the end product performance of these blends at different temperatures are discussed.Item The impact of current research on the development of the NR industry(Rubber Research Institute. Agalawatta, 1973) Peries, O.S.Item The establishment of rubber - based industries in a developing country(Rubber Research Institute. Agalawatta, 1973) Matthan, R.K.Item Plantation developments in natural rubber processing(Rubber Research Institute. Agalawatta, 1973) Sung, C.P.; Fahand, C.S.; Beng, S.Y.