Shape memory polyphenylene sulfide manufacturing, process, and composition

摘要

Disclosed is a process for making shape memory polyphenylene sulfide, comprising: curing polyphenylene sulfide to produce cured polyphenylene sulfide; comminuting the cured polyphenylene sulfide to form cured polyphenylene sulfide particles; disposing the cured polyphenylene sulfide particles in a mold; heating the mold for flowing the cured polyphenylene sulfide; compressing, by applying a compressive force, the cured polyphenylene sulfide; cooling the cured polyphenylene sulfide; relieving the compressive force; and de-molding the cured polyphenylene sulfide to produce the shape memory polyphenylene sulfide.

主权项

1. A process for making shape memory polyphenylene sulfide, comprising:
compounding polyphenylene sulfide with a crosslinking agent; disposing the compounded polyphenylene sulfide in a mold; heating the mold to a temperature of about 320° C. to about 420° C. for initiating curing of the disposed polyphenylene sulfide in the presence of the crosslinking agent; compressing, by applying a compressive force to the heated polyphenylene sulfide to produce cured polyphenylene sulfide; cooling the cured polyphenylene sulfide; relieving the compressive force; and de-molding the cooled, cured polyphenylene sulfide to produce the shape memory polyphenylene sulfide; wherein the crosslinking gent comprises a sulfur donor, sulfur, silica, peroxy compound, metal oxide, metal peroxide, or a combination comprising at least one of the foregoing crosslinking agents.