Natural Resins Analysis
ANALYSIS OF ADHESIVE BEHAVIOUR OF NATURAL RESINS -IN COMPARISON WITH SYNTHETIC RESINS
Abstract? During the last few years, natural resins have received much more attention than ever before from the research community all over the world1. These natural resins offer a number of advantages over commercial resins. In the present communication, a study on the synthesis and mechanical properties of new series of natural resins involving Acacia, Almond, Neem and Drumstick resins as a reinforcing material in E-Glass fiber based polymer composites has been reported2. Mechanical properties of intimately mixed Acacia and Almond resins reinforced polymer composites such as tensile, shear, adhesive and wear properties were investigated. Initially Acacia
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Natural resins are now considered as serious alternative to synthetic resins for use in various fields. The use of natural resins as reinforcing materials in both thermoplastic and thermoset matrix composites provides positive environmental benefits with respect to ultimate disposability and best utilization of raw materials5. The advantages of natural resins over synthetic reinforcing materials such as epoxy resin, amberlite, polyaspartic etc are their easy availability, ease of separation, non-corrosive nature, low cost, good thermal properties, reduced tool wear and mainly bio degradable and conservation of petroleum resources. It has been observed that natural resins reinforced composites have properties similar to synthetic resins reinforced composites. Natural resins composites have been studied and reviewed by a number of researchers6. During the past few years, a number of significant industries such as the automotive parts production, construction or packaging industries, interior house decoratives and polymer industries have shown massive interest in the progress of new biocomposites …show more content…
The numerous pieces of wood of dimension (15cm*3cm*1.5cm) are used .The hole of dia 0.8cm is drilled at one end of each rectangular samples10. Few pieces of E-Glass fiber of dimension (15cm*15cm) are used with glass plates. Universal testing machine and lap shear test machine are used in entire testing process11.
3.TESTING METHOD
The well mixed acacia resins are applied over the end face along the length. Two pieces of rustic woods are sticked one with another sideways. Same method is followed for almond, neem and drumstick resins. Min. of 12 hrs of curing time is provided for letting it stick properly in normal atmospheric condition and min. of 8 hrs in case of dry environment and high sunlight12.
I. TENSILE ADHESIVE STRENGTH
Min. of 3 pairs are of woods are done with sticking for each resins. In each pair of sample, two hook made up of mild steel are used to support them by holding it in two hole on their either side13. Same suports are used for all samples of each resins. In testing machine, two ends of the hook are clinched with two fixed hook of testing machine. The samples are fixed properly and load is applied through the lever. By this, Adhesive strength of each resins are claculated by noting out the amount of load applied through the lever until the rustic wood sample tore out or separated from each other14
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