Manufacturing method of high-temperature resistant and corrosion-resistant polyphenyl thioether composite tube

Abstract

The invention discloses a manufacturing method of a high-temperature resistant and corrosion-resistant polyphenyl thioether composite tube. The manufacturing method comprises the following steps of: adding fillers such as a thermal stabilizer, an inorganic filler and the like into polyphenyl thioether resin, and then mixing the materials fully and uniformly in a high-speed stirring machine to obtain a polyphenyl thioether resin premix compound; mixing and extruding the premix compound through a first-stage twin-screw extruder and introducing the premix compound into a single-screw extruder; extruding 3 to 6 layers of a fiber cloth formed by mix-twisting knitting a cylindrical basalt fiber and modified aramid fiber III after thermal expansion and contraction and a polyphenyl thioether composite fusant out of a tubular die on the head section of the extruder by the single-screw extruder; and cooling a pull tube into the polyphenyl thioether composite tube. The polyphenyl thioether composite tube manufactured by the method has the advantages of high thermal denaturation stability, corrosion resistance and high air tightness, and can be widely used in the fields of chemical industry, petrochemical industry, water supply and sewerage works, special industries and the like.

Description

Technical field [0001] The invention belongs to the application field of special polymer materials Background technique [0002] Polyphenylene sulfide (PPS) has excellent thermal stability, excellent high temperature resistance, corrosion resistance, and a melting point of 285°C. PPS composite pellets have excellent injection molding performance and can be processed into various specifications and shapes. PPS materials or composite products are used in more demanding fields, and people are still pursuing the goal of exploring, discovering and applying PPS resins and PPS composite materials with better performance. [0003] In U.S. Patent NO: 5151235, a method for manufacturing polyphenylene sulfide composite pipes made of phenylene sulfide and diphenyl sulfide copolymer resin is introduced, the purpose of which is to improve the polyphenylene sulfide copolymer resin during extrusion molding. Thermal stability and toughness and surface finish of molded materials. However, t...

AI Technical Summary

Problems solved by technology

However, the effect of using polyphenylene sulfide pure resin is not ideal, because the polyphenylene sulfide resin composite pipe produced at this process level is relatively fragile, which directly affects the mechanical properties

[0004] In Chinese patent application 200710027360.0, a manufacturing method of inserting composite pipes with polyamide compounds, inorganic fillers and polyphenylene sulfide (PPS) composite materials is introduced, the purpose of which is to use composite materials to extrude plastic composite pipes into inserts , so as to provide a polyphenylene sulfide composite pipe with good processing performance and high mechanical strength. Although it is easy to extrude after adding polyamide compounds and other filler materials, it reduces the polyphenylene sulfide composite material. The flexural impact strength and tensile strength of composite pipes have inherent defects in chemical corrosion resistance when used in chemical and petrochemical fields

Images