Novel CNSL Resin - NO Formaldehyde
	A novel resin based on cashew nutshell resin has been developed which differs from previously reported CNSL resins in that it is both water soluble and formaldehyde free. As a phenolic based resin it has moisture resistant properties similar to those one would find in a PF resin. This resin based on a renewable resource has been developed primarily for use as a binder for use in particleboards. Such “Bioboards” with no formaldehyde emission, have great commercial potential. There are many sources of natural, renewable phenolic material, notably tannins, complex polyphenolic compounds, but the most abundant, with a long history of industrial development, is Cashew Nut Shell Liquid, which is the only naturally occurring alkenyl phenolic material entering into world trade. Cashew Nut Shell Liquid (CNSL) is a by-product of the cashew nut industry. CNSL is a mixture of phenolics extracted from the shells of the cashew nut and is a good natural alternative to petrochemically derived phenol. The major component of CNSL is cardanol, a phenol with a 15 carbon chain at the meta position. The cashew market is steadily expanding, with around 3% p.a increase in production. The increase in world production of cashew nuts as a luxury food item, and the limited industrial usage of CNSL by developed economies, combined with its low export value, has led to under capacity CNSL extraction and export. A new market for CNSL would result in the extraction and utilization of a by-product that otherwise presents a disposal problem. Over the next ten years the projected cost of CNSL ranges between US$300 - US$500. This is underpinned by the calorific value of CNSL at lower prices Until now the hydrophobicity of CNSL presented application difficulties in an aqueous system. However, recent research has led to a CNSL resin which, unlike previous formulations, can be used in commercial systems where a water based spray is required. Water soluble CNSL has many applications for comerical system where spary is used The BioComposites Centre has considerable experience in the use of CNSL and is available for: Contract research and development Consultancy of reactor for CNSL EXTRACTOR and biofuel blend made from CNSL Development of a commercial product leading to the payment on a pre agreed royalty/commission basis Licensingof novel technologies. of the low cost natural polymer resine for binders

Natural fiber (Coconut fiber) CNSL POLYESTER CRYSTAL LQUID BIOCOMPOSIT


B esides the raw materials of coconut fiber, latex and polyester resin, We also studied and developed Biocomposite materials with the incorporation of filler , such as paper, saw dust, and coconut. Were also conducted tests to reduce the amount of polymer (plastic), through experiments seeking the production of copolymers (mixture of two or more polymers), which used liquid polyester resin and the cashew nut (LCC) in the formulation. We developed a compound polymer-based polyester and LCC in order to minimize the costs of the compound hard (plaques and tiles).

For the steps of manufacturing flexible compound, was followed the procedure for the manufacture of coconut fibre blankets, which are used for the insertion of alternate form of latex. However, for the manufacture of Basket vessels (xaxim ecological), used a cast of the male-female type of aluminum. In addition to using matrix of natural latex inserted in layers, and is directed to cure (cured) in oven for 1h30min at a temperature of 70 ° C.


With so developed, it was possible to establish that the non-necessity of using mechanical presses for the compaction of the ground of coconut fiber, and it is possible, through the system of closing, the compression necessary to promote bolstered the material.

The development of plates was done with such a plan, having been used a polymer matrix developed and incorporated into the fibres randomly. The process was carried out to pressure and temperature, and then there was exposure to the sun as a complement to cure - process called termofotopolimerização. In this process, it is possible to develop compounds panels with the use of solar energy and low cost.




Reference on line