The invention discloses a preparation method of heat-resisting and
corrosion-resisting
engineering plastic. The preparation method disclosed by the invention is characterized in that a third
phenolphthalein monomer is introduced in a preparation process of master batch, and a flexible diethanol part in a
polyester macromolecular chain is replaced by a rigid
phenolphthalein group, so that a rigid diacid
monomer and rigid
phenolphthalein monomer connected segment is formed, the rigidity and the
crystallization performance of a whole molecule are enhanced, and glass-
transition temperature and a
melting point are raised. According to the preparation method disclosed by the invention, by adopting a
radiation crosslinking process,
heat resistance and
corrosion resistance of the
engineering plastic are improved; according to an adopted
radiation crosslinking agent,
benzene-containing anhydride is used as a synthetic
raw material, and a
benzene ring structure is introduced, so that the
melting point of a crosslinking
promoter is improved, and the
radiation resisting stability of the crosslinking
promoter is further improved; prepared
engineering plastic adopts the radiation crosslinking
promoter; having increased molecular weight, a
benzene ring structure and low high-temperature volatility, the radiation crosslinking promoter has good compatibility with the
engineering plastic; according to the preparation method disclosed by the invention,
flame retardant materials such as
graphene,
titanium dioxide and
halloysite nanotubes and aging-resisting materials such as
wollastonite needle-like fibers form a compound synergistic effect, so that the
flame retardant property and the aging resisting property of the
engineering plastic are greatly improved.