Ultra-high molecular weight polyethylene composition and process for its preparation, ultra-high molecular weight polyethylene article and use thereof

By combining polymers, compatibilizers, lubricants, flow modifiers, and wear-resistant fillers, the problem of poor flowability of UHMWPE was solved, enabling the efficient preparation of UHMWPE products with excellent mechanical properties and wear resistance in conventional processing.

CN119552434BActive Publication Date: 2026-06-09CHINA PETROLEUM & CHEMICAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2023-08-28
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The poor flowability of existing ultra-high molecular weight polyethylene (UHMWPE) makes it difficult to process, and its wear resistance and mechanical properties decrease after modification, making it difficult to balance its performance in conventional extrusion injection molding processes.

Method used

Using an ultra-high molecular weight polyethylene composition, comprising polymers, compatibilizers, lubricants, flow modifiers, wear-resistant fillers, and coupling agents, UHMWPE products with good flowability and excellent mechanical properties are prepared through mixing and extrusion molding.

Benefits of technology

It achieves good melt extrusion flowability of UHMWPE during processing, and the prepared products have excellent mechanical properties and wear resistance, and are suitable for extruded pipes, profiles and sheets.

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Abstract

The application belongs to the field of high polymer materials, and particularly relates to a kind of ultra-high molecular weight polyethylene composition and its preparation method, ultra-high molecular weight polyethylene product and its application.The ultra-high molecular weight polyethylene composition of the application, wherein the ultra-high molecular weight polyethylene composition comprises: 100 parts by weight of polyethylene, 1-6 parts by weight of compatibilizer, 0.5-3 parts of lubricant, 0.5-3 parts by weight of flow modifier, 0.5-5 parts by weight of wear-resistant filler and 0.05-0.5 parts by weight of coupling agent;Wherein, the polyethylene comprises 70-90 parts by weight of ultra-high molecular weight polyethylene and 10-30 parts by weight of polyolefin resin.The ultra-high molecular weight polyethylene composition has good melt extrusion fluidity during processing, and the prepared ultra-high molecular weight polyethylene product has excellent mechanical properties and wear resistance.
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