The invention relates to a phenolic plastic, discloses a modified phenolic molding compound with high bending strength and a preparation method of the modified phenolic molding compound, and solves the problems that properties such as tensile strength and
flexural modulus of a phenolic molding compound are reduced when
brittleness of the phenolic molding compound is reduced in the prior art. The modified phenolic molding compound with the high bending strength comprises the following raw materials, in parts by
mass: 200 parts of thermosetting phenolic resin, 4-6 parts of 2-formyl-3,4-
dihydropyran, 3-5 parts of
polyvinyl alcohol, 0.2-4 parts of a demolding auxiliary agent, 7-12 parts of a filler, and 2-3.5 parts of a
pigment, wherein the thermosetting phenolic resin is liquid thermosettingphenolic resin; and the method comprises the steps of firstly mixing the 2-formyl-3,4-
dihydropyran and the thermosetting phenolic resin for a reaction, then adding the
polyvinyl alcohol, performing areaction under mixing, adding the demolding auxiliary agent, the filler and the
pigment, performing mixing, and performing plastication to obtain the modified phenolic molding compound. According to the method provided by the invention, the rigidity and
toughness performance are improved while the
brittleness of the modified phenolic molding compound is reduced.