Polyurethane co-mixed modified polyphenylene sulfide composite material and preparation method thereof

A polyphenylene sulfide, blending modification technology, applied in the field of polyurethane blending modified polyphenylene sulfide composite materials and its preparation, can solve the problems of large dielectric constant, insufficient toughness, insufficient temperature resistance, etc. Small electrical constant, good fluidity, and the effect of improving fluidity

Inactive Publication Date: 2014-09-17
GUANGZHOU GAOBAER PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During many years of use, we found that PPS has obvious disadvantages when manufacturing certain parts, but it cannot be replaced by other materials, because other materials are not resistant to temperature. For example, when making some thin-walled products, due to insufficient toughness Breakage occurs, some special-purpose electronic components have a short circuit in the presence of high voltage due to their large dielectric constant, and leakage occurs under high temperature conditions

Method used

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  • Polyurethane co-mixed modified polyphenylene sulfide composite material and preparation method thereof
  • Polyurethane co-mixed modified polyphenylene sulfide composite material and preparation method thereof
  • Polyurethane co-mixed modified polyphenylene sulfide composite material and preparation method thereof

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Embodiment 1

[0021] First, under normal temperature and pressure, polyphenylene sulfide, polyurethane, compatibilizer, antioxidant, coupling agent, lubricant and carbon black are mixed evenly by high-speed stirring. The stirring speed is about 3000 rpm or more. The stirring time About 3 minutes. Then add glass fiber and wollastonite fiber, disperse evenly by stirring at a low speed, the stirring speed is about 200 rpm or less, and obtain a mixture. In this embodiment, in parts by weight, polyphenylene sulfide 35, glass fiber 40, polyurethane 30, wollastonite fiber 10, and additive 2.4. In parts by weight, compatibilizer 1, antioxidant 0.3, coupling agent 0.3, lubricant 0.4, carbon black 0.4.

[0022] Then, the mixed material is added into a twin-screw extruder, and the set process conditions of the twin-screw extruder are a temperature of 300-350° C. and a screw speed of 1100 rpm.

[0023] Finally, a cold water tank is set at the discharge port of the twin-screw extruder, and the extrude...

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Abstract

The invention discloses a polyurethane co-mixed modified polyphenylene sulfide composite material which comprises polyphenylene sulfide, polyurethane, glass fibers, wollastonite fibers and an assistant, wherein the assistant comprises a compatilizer, an antioxidant, a coupling agent, a lubricant and carbon black. The invention further discloses a method for preparing the polyurethane co-mixed modified polyphenylene sulfide composite material. The method comprises the following steps: (1) stirring and mixing the polyphenylene sulfide, the polyurethane, the glass fibers, the wollastonite fibers, the compatilizer, the antioxidant, the coupling agent, the lubricant and the carbon black to obtain a mixed material; (2) adding the mixed material into an extruder and extruding to obtain the strip-like composite material. The polyurethane co-mixed modified polyphenylene sulfide composite material disclosed by the invention not only has the characteristics of high strength, low creep, good mobility, easiness in processing and the like, but also has the characteristics of high toughness, low density, small dielectric constant, high comparative tracking index and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to polyurethane blended modified polyphenylene sulfide composite materials and a preparation method thereof. Background technique [0002] Polyphenylene sulfide resin (English abbreviation: PPS) is a polar resin with high rigidity and high temperature resistance. Usually, composite materials made by adding glass fiber to it have the advantages of temperature resistance, high strength, excellent electrical properties, and wear resistance. , has been widely used in industrial production. During many years of use, we found that PPS has obvious disadvantages when manufacturing certain parts, but it cannot be replaced by other materials, because other materials are not resistant to temperature. For example, when making some thin-walled products, due to insufficient toughness Breakage occurs, and some special-purpose electronic components have a short circuit in the presence of high volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08L75/04C08K13/04C08K7/14C08K7/10
Inventor 林显达周家鋆周禺林良云
Owner GUANGZHOU GAOBAER PLASTIC
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