The invention discloses a composite
polyethylene master batch for
processing a heat-resistant pressure pipeline and a preparation method of the composite
polyethylene master batch, belongs to the technical field of preparation of plastic master batches, and aims to solve the technical problem that the
heat resistance and the compression resistance of the heat-resistant pressure pipeline prepared from the composite
polyethylene master batch need to be further improved in the prior art. A
cyclic alcohol fixing and locking structure, a
silane phosphazene flame-retardant framework and a
hindered phenol stabilizer are introduced into a polyethylene
system, organic combination of structure limiting,
heat resistance enhancement and long-term
oxidation resistance is achieved, all the components form a synergistic effect on the
molecular level, and the material can still keep dimensional stability and
bearing capacity in the high-pressure and high-temperature environment; and meanwhile, the heat-resistant
pressure pipe prepared from the material is balanced and reliable in
mechanical property,
heat resistance and
flame retardance, and can meet the safety service requirement under the long-term complex working condition.