Title Studv On The Modification Of Cardanol And The Optimization Of Application In The Anti-corrosion Performance Of Furan Resin

By chemical modification of the method of cardanol modified so prepared with a flexible long-chain hydroxyl reactive hydroxyl groups (phenyl) methyl cardanol and linear cardanol formaldehyde resin. At the same time, the use of chemical methods using polyethylene glycol modified for alcohol, prepared by the middle of the long-chain polyethylene glycol flexible connection and ends with active alcohol group polyethylene glycol-modified alcohol. And during the preparation investigated hydroxymethyl cardanol, phenol-formaldehyde resins affect cashew linear polyethylene glycol-modified alcohol preparation material ratio, reaction temperature and reaction time on the (benzene) and, eventually using infrared, etc. to them were characterized.Although there is no active functional groups on the furan resin structure after curing, does not participate in the reaction corrosive media, and therefore have many excellent properties:corrosion resistance: resistant to acid, alkali, electrolyte solutions and organic solvents, but intolerant of strong oxidizing media; heat resistance:180～200 ℃ can be resistant to high temperature resin is one of the best existing performance corrosion resistant resin; good flame retardant properties, less smoke when burned. But it also has a great disadvantage, the impact strength is not high, the cured brittleness, lack of flexibility. Further, the conventional curing agent is acidic furan resin, a basic material can not be used. Curing the resin formed by the reaction of water causes shrinkage, porous defects, greatly reducing the range of applications furan resin. Therefore, this series will be prepared in accordance with a certain percentage of the new compound is added to the uncured furan resins, furan resin as an additive to be modified in order to improve the impact strength of furan resin, flexibility, low impact strength to overcome its results. Infrared modification of the chemical structure of furan resin anti-corrosion materials were characterized; using scanning electron microscopy fracture surface modified furan resin curing anticorrosive material were observed; by universal testing machine and impact testing machines modified for curing furan corrosion resin material mechanical properties and impact strength were measured; and finally on the corrosion resistance of the cured material were measured.The results show that:hydroxyl test preparation (benzene) methyl furan resin modified cardanol anti-corrosion materials, phenol formaldehyde resin-modified linear cashew furan resin and polyethylene glycol-modified anti-corrosion materials alcohol furan resin modified anti-corrosion materials, in toughness and impact strength relative to the furan resin anticorrosive materials have improved to some extent. Wherein, the reinforcing effect linear cardanol formaldehyde resin-modified furan resin anticorrosive material in toughness and impact strength is best. When the linear cardanol formaldehyde resin as an additive amount of up to 25%, the tensile strength of the modified furan resin anticorrosive material from the original 24MPa increased to 33.6MPa, increase the rate reached 40%; elongation at break rate from the previous 1.06% increase to 4.35%, were increased by 310%; the impact strength of the original strength 0.542KJ/m2 increased to 0.613KJ /m2, were increased by 13.1% increase. And by the TGA test and analysis found alcohol-modified polyethylene glycol-modified furan resin temperature performance relative to furan resin slightly weakened. The hydroxybenzyl cardanol-modified furan resins and phenol-formaldehyde resin-modified linear cardanol furan resin is in large part to enhance high temperature performance furan resin, wherein the linear resistance cardanol formaldehyde resin-modified furan resin the maximum temperature performance, make the decomposition temperature of furan resin increased from 230℃ to 360℃.Hydroxy (phenyl) methyl cardanol, linear cashew phenol formaldehyde resin and a polyethylene glycol modified alcohol all having a flexible structure in the long chain structure, and the rigid structure of the active hydroxyl group of a benzene/class benzene ring structure. These structures will be overcome to some extent, furan resin cured product of anticorrosive material brittleness, lack of flexibility, impact strength is not high shortcomings, but also has some of its strength enhancement. In addition, these additives on the heat resistance, corrosion resistance and excellent flame retardant properties will have little impact. Will eventually get a new furan resin material, is expected in the chemical, paper, pharmaceutical, food, metallurgy, electric power and other sectors of infrastructure projects, corrosion container (tank, tank, tank, tower) and other areas as a structural material and corrosion resistant materials to be more widely used.