Preparation method for bamboo charcoal particle-hollow microsphere-phenolic resin ternary composite plate

Abstract

The invention discloses a preparation method for a bamboo charcoal particle-hollow microsphere-phenolic resin ternary composite plate, and belongs to the field of composite material preparation. The preparation method for the ternary composite plate comprises the steps that moso bamboo is taken to be split, dried, carbonized and rolled into particles for standby application; ammonium nitrate, styrene monomers, deionized water, azodiisobutyronitrile and ammonium lauryl sulfate are taken to be mixed in a high-pressure reaction kettle, sealing treatment is performed, nitrogen is introduced, vacuumizing is performed, vinylidene chloride is added for predispersion treatment, reacting under heating is performed, suction filtration is performed to obtain filter cakes, the filter cakes are washed by absolute ethyl alcohol, foamed under heating, dried and then mixed with the standby bamboo charcoal particles and a phenolic resin ammonium chloride solution, natural curing is performed on the mixture in a mould, and then the ternary composite plate is prepared. The preparation method has the advantages of being simple and little in pollution to the environment in the production process. The obtained product has the good mechanical property and heat stability and is little in low temperature brittleness, capable of resisting the temperature of minus 10 DEG C-380 DEG C, not prone to crack, good in impact resistance and anti-crack propagation capacity and high in toughness.

Description

technical field [0001] The invention relates to a preparation method of a bamboo charcoal particle / hollow microsphere / phenolic resin ternary composite plate, belonging to the field of composite material preparation. Background technique [0002] Phenolic resin is also called bakelite, also known as bakelite powder. Originally a colorless or yellowish-brown transparent substance, the market often adds coloring agents to turn it into red, yellow, black, green, brown, blue and other colors, with granules and powders. Resistant to weak acid and weak alkali, it will decompose in case of strong acid and corrode in case of strong alkali. Insoluble in water, soluble in acetone, alcohol and other organic solvents. It is obtained by polycondensation of phenolic aldehyde or its derivatives. In the 1980s and 1990s, my country's phenolic resin developed rapidly, and has formed a broad market. The products involve molding compounds, wood bonding, casting, insulating products, coatings,...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current phenolic resin has high low-temperature brittleness, is easy to crack, and has poor impact resistance and crack growth resistance, especially cracks parallel to the fiber direction, which are easy to expand along the matrix or fiber-matrix interface, resulting in transverse fracture. The disadvantages of low energy and low toughness provide a preparation method for bamboo charcoal particles / hollow microspheres / phenolic resin ternary composite boards. The present invention is to split and dry bamboo to carbonize it, and roll it into granules for subsequent use. Ammonium nitrate, ammonium nitrate, Styrene monomer, deionized water, azobisisobutyronitrile and ammonium lauryl sulfate are mixed in a high-pressure reactor, sealed, nitrogen is introduced, vacuumized, vinylidene chloride is added for pre-dispersion treatment, and then heated for reaction. The filter cake is obtained by suction filtration, heated and foamed after washing, then dried, mixed with spare bamboo charcoal particles and phenolic resin ammonium chloride solution, and naturally solidified in a mold