Super-hydrophobic polypropylene plastic composite material and preparation method thereof

By constructing a multi-level micro-nano rough structure and a molecular-level low surface energy layer in polypropylene materials, combined with an halloysite nanotube network framework, the problem of easy water adhesion on the surface of polypropylene materials is solved, achieving long-term effectiveness and stability of superhydrophobic properties, making it suitable for high-end applications.

CN122587338APending Publication Date: 2026-08-18JIANGXI YU INNOVATION MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202610776962.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-01
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Polypropylene materials have a small water contact angle on their surface, making them easy for water to adhere to, which leads to dirt deposition and microbial growth. Existing hydrophobic modification methods are complex or have limited hydrophobic effects, making it difficult to meet the needs of high-end applications.

Method used

By dispersing and embedding hydrophobically modified nano-silica in a low molecular weight polymer wax matrix, a multi-level micro-nano rough structure is constructed. Polydimethylsiloxane is grafted onto the polypropylene molecular chain to form a molecular-level low surface energy layer. Combined with hydrophobically modified halloysite nanotubes to construct a three-dimensional network framework, the superhydrophobic properties of the material are achieved.

Benefits of technology

It significantly increases the water contact angle, improves the hydrophobicity of the material, and ensures the long-term durability and stability of the modification effect, making it suitable for high-end applications.

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Abstract

The application discloses a super-hydrophobic polypropylene plastic composite material and a preparation method thereof, and relates to the technical field of high-performance polypropylene. The method comprises the following steps: dispersing and embedding hydrophobic modified nano silicon dioxide in a low-molecular-weight polymer wax matrix to prepare composite microspheres; grafting polydimethylsiloxane to polypropylene molecular chains to prepare polydimethylsiloxane grafted modified low-surface-energy master batches; performing surface hydrophobic modification treatment on natural tubular silicate minerals to prepare hydrophobic modified nanotubes; and melt blending polypropylene matrix resin, the composite microspheres, the low-surface-energy master batches, the hydrophobic modified nanotubes and processing aids, and then performing cooling solidification and molding to obtain the super-hydrophobic polypropylene composite material. The polypropylene plastic composite material prepared by the application has excellent super-hydrophobic performance.
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