The invention relates to a machinable
solid buoyancy material and a preparation method thereof. The machinable
solid buoyancy material belongs to a functional nonmetallic material and comprises the following components in part by
mass: 100 parts of
epoxy resin, 15 to 55 parts of amine
epoxy curing agent and 30 to 130 parts of glass beads, wherein the
epoxy resin is
bisphenol S type epoxy resin or
glycidol epoxy resin; and the amine epoxy curing agent is
polyamide 650,
polyamide 651,
tertiary nitrogen type organic amine or
quaternary nitrogen type organic amine, bismaleimide, low molecular weight
polyacrylamide, imidazoles or
organic acid anhydride compounds. The preparation method comprises the following steps of: heating the epoxy resin and the amine epoxy curing agent, weighing the epoxy resin and the amine epoxy curing agent, blending and stirring the epoxy resin and the amine epoxy curing agent, adding the glass beads, stirring again, kneading the materials, after taking the material out,
coating a mould
release agent on the inner wall of a die and sticking mould release paper; filling the material into the die; covering by using a cover; curing the die in a
drying oven; and separating the material from the die on a demoulding
machine. The machinable
solid buoyancy material can meet the requirements on
underwater projects, permanent buoys and the like.