Ecological Technology Design Based On Utilization Of Natural Latex Resources——Experiment Of Low Concentration Of Prote In Latex And Rubber-based Mat-erial Preparation For Soil And Water Conservation

This research adopted different protein additive combinations preparation of low protein concentrated latex. The experimental researches of water imbibitions, water and soil retention were made for the separation of glue solutions, studying material properties of adhesive separating medium used as soil and water conservation agent. A new ecological technique of the natural latex processing was made by the preparation from low protein concentrated liquid latex and rubber conservation materials at the same time, which could realize full utilization of natural latex resource, to prevent the generation of pollution in the manufacturing process of natural rubber from headstream. This study could provide experimental basis to prevent the pollution in the processing of natural rubber, improve the comprehensive economic benefits of enterprises and realize sustainable development.The main conclusions of this research were as follows:The results showed that the method of by adding the additive into natural rubber latex to promote protein denaturation and micelle surface protein replacement can produce low-protein concentrated latex and natural rubber products, and eliminate the sensitization reaction of natural rubber products.Three kinds of selected surfactants had effects to remove proteins and the effects showed different trends. Among them, water soluble protein content of concentrated latex with lauryl sodium sulfate added was better than that with laurel acyl glutamic acid sodium and coconut oil fatty acid glycine potassium treated. With comprehensive consideration of technical economy, the optimum addition level of three kinds of surfactants was0.25%.The effects of additive combinations to remove protein were better. Among them, the levels of the water soluble protein contents of the5th treatment (fresh glue+urea+sodium dodecyl sulfate (optimum concentration)+sodium hypochlorite), the6th treatment (fresh glue+urea+sodium dodecyl sulfate (optimum concentration)+sodium hypochlorite+polyvinyl alcohol), the8th treatment (fresh glue+urea+coconut oil fatty acid glycine potassium (optimum concentration)+sodium hypochlorite) and the9th treatment (fresh glue+urea+coconut oil fatty acid glycine potassium (optimum concentration)+sodium hypochlorite+polyvinyl alcohol) were all able to achieve the requirement of low protein revertex, and deproteinization rates of the9th treatment and the 5th treatment were up to98.34%and97.79%respectively, showing superior deproleinization properties.Glue solution separated from the preparation of low protein revertex supernatants had good water absorption, retention and sand-fixation effect used as latex skim based soil and water conservation materials, reflecting that the glue solution could be used as soil and water conservation materials.In the three selected different latex skim based soil and water conservation materials, the water absorption effect, water holding effect and sand-fixation effect of the series of coconut oil fatty acid glycine potassium used as latex skim based soil and water conservation materials in building sand mold were the best, whilst the water absorption effect, water holding effect and sand-fixation effect of the series of lauryl sodium sulfate used as latex skim based soil and water conservation materials in sandy loam and sandy soil were the best.