Compression-resistant and high-temperature-resistant PVC (polyvinyl chloride) modified plastic and preparation method thereof

By using silicon-phosphorus modified kaolin and lightweight calcium carbonate composite materials in PVC electrical casings, the problem of easy damage and deformation of PVC electrical casings in high-pressure and high-temperature environments is solved, and the material's compressive resistance and high-temperature flame retardancy is improved.

CN119708727AInactive Publication Date: 2025-03-28FOSHAN SUOSHI PIPELINE TECH CO LTD
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Patent Information

Application Number
CN202510228360.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2025-03-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing PVC electrical casing is prone to damage and deformation under high voltage and high temperature environments, resulting in a shortened service life, and the material is not resistant to high temperatures and insufficient flame retardant performance.

Method used

Silicon-phosphorus modified kaolin and light calcium carbonate composites are used as fillers, combined with PVC resin, and pressure-resistant and high temperature-resistant PVC-modified plastics are prepared through specific preparation methods.

Benefits of technology

It improves the compressive mechanical properties and high-temperature flame retardant properties of PVC modified plastics, extends the service life of PVC electrical sleeves, and solves the problem that the material is prone to deform at high temperatures.

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Abstract

The invention discloses compression-resistant and high-temperature-resistant PVC (polyvinyl chloride) modified plastic and a preparation method thereof, and belongs to the technical field of PVC plastics, the PVC modified plastic comprises the following raw materials in parts by weight: 100 parts of PVC resin, 10-20 parts of silicon-phosphorus modified kaolin, 3-8 parts of light calcium carbonate, 0-1 part of a PVC processing aid, 0.5-1.5 parts of a lubricant, 4-8 parts of a stabilizer and 0.5-2 parts of titanium dioxide; the silicon-phosphorus modified kaolin is obtained by adsorbing a silicon-phosphorus modifier in nano kaolin, and the silicon-phosphorus modified kaolin containing organic matter molecules has good compatibility with PVC resin, so that the problem that the PVC electrical conduit is easy to whiten and crack due to poor dispersity of inorganic filler is solved; the silicon-phosphorus modified kaolin and the light calcium carbonate are compounded and jointly act to endow the PVC modified plastic with good compression resistance; in addition, the silicon-phosphorus modifier is adsorbed in the kaolin and is not easy to separate out, so that the high-temperature resistance of the PVC modified plastic can be maintained for a long time.
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Citation Information

Patent Citations

  • Modification filling material-filled hard PVC pipe with high impact resistance

    CN105440482A

  • Preparation method of high-strength flame retardant building electrical sleeve material

    CN110408146A

  • Polyurethane-based flame-retardant master batch and preparation process thereof

    CN111574825A

  • Phosphorus nitrogen flame retardant, method thereof and material comprising the same

    US20220127533A1

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