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Phenolic resins are widely used in wood processing industry, an adhesive, but due to its high cost, color depth, curing temperature (140-150 ℃), currently used mainly for building templates, carriage plate, container plate material production; The melamine - formaldehyde resin, high strength, water resistance, sufficient raw materials and colorless, low curing temperature (95-110 ℃), but brittle, short shelf life, resistance to aging poor. Currently, more and more environmentally friendly high-performance wood products professions seriously. Meanwhile chemicals Phenol prices, precious wood resource supply increasingly tense. For while maintaining low free formaldehyde distribute, environmental protection, anti-aging, high strength and long storage time, cost, moderate types of plastic, wood processing is the field of technical bottlenecks. MPF copolycondensation both phenolic and melamine resins - formaldehyde resin, excellent performance and environmentally friendly, flame retardant, high strength, high durability and other advantages of wood products pollution-free, easy processing, affordable, fireproof board, plywood , wood laminate flooring, bamboo products such as recombinant board is particularly suitable for application development. Therefore, the development MPF co-condensation resin has a broad market prospect. This study of MPF co-condensation resin synthesis and properties of the following conclusions: ① through MPF resin Fourier transform infrared spectroscopy and NMR analysis showed that the synthesized under alkaline conditions MPF co-condensation resin, mainly through hydroxyl methyl melamine and methylol phenol obtained by polycondensation of melamine and phenol triazine ring structure with the methylene ring structure primarily associated. ② MPF different molar ratio of the resin is shown by the non-isothermal differential scanning calorie DSC curves show that as the (MP) / F molar ratio increased, MPF characteristics are reduced curing temperature, curing the apparent activation energy decreases gradually; three kinds of moles than the MPF (F / (MP) = 1.3,1.6,1.8) copolycondensation resin kinetic model were: da / dt = 1.04 × 10 15 e -116140/RTp < / sup> (1-a) 0.9291 and da / dt = 8.45 × 10 13 e -107230/RTp (1-a) < sup> 0.9407 and da / dt = 2.40 × 10 11 e -87030/RTp (1-a) 0.9448 ; Sui the F / (MP) molar ratio increased, the use of extrapolation of static characteristics curing temperature Ti, Tp and Tf were decreased, this relates to MPF resin curing reaction of the same order of magnitude of the apparent activation energy; As the pH decreases, MPF curing reaction resin system the apparent activation energy increases. ③ through the cone calorimeter for different heat radiated power MPF resin molding material bamboo combustion dynamics and the combustion performance of studies have shown that the apparent activation energy Ea combustion reactions are flame retardant resin BSFM is handled MPF 29.89KJ.mol -1 , PF resin BSFM is 13.93KJ.mol -1 , flame retardant resin BSFM untreated MPF is 13.54KJ.mol - 1 , PF resin BSFM is 12.26KJ.mol -1 ; retardant resin before and after treatment were MPF bamboo molding material flame retardant properties are better than PF resin molded timber bamboo ; through the cone calorimeter MPF and PF resin for fire board combustion performance analysis also shows, MPF resin flame combustion performance is better than PF resin fire board; ④ By pressing temperature MPF resins of different bamboo reorganization board Mechanical Analysis showed that with the pressing temperature, MPF resin bonding performance gradually increased; MPF through the various sintering temperature of the resin layer poplar plywood bonding strength studies showed that with the sintering temperature rise high, MPF resin bonding performance is gradually improving; through various pH values ??MPF resin mechanical properties of bamboo plate reorganization studies show that alkaline pH range, MPF resin PH value changes do not affect its bond performance large.
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