A method for forming a high filler polydicyclopentadiene composite

A high-filler polydicyclopentadiene composite molding method, which involves mixing ultrafine fillers and additives in a twin-screw extruder, has solved the equipment clogging problem and achieved efficient production and performance improvement of the high-filler system.

CN117416030BActive Publication Date: 2026-07-03CHANGCHUN SANYOU ZHIZAO TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGCHUN SANYOU ZHIZAO TECH DEV CO LTD
Filing Date
2023-10-24
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In the production of high-filler polydicyclopentadiene composite materials, existing technologies often result in clogging of reaction injection molding equipment, leading to poor industrial production adaptability and making it difficult to achieve effective production of high-filler systems.

Method used

A twin-screw extruder is used to force-mix and shear the A and B combination liquids, and the temperature is controlled to avoid polymerization reaction. Polymerization is carried out in the mold cavity, and a combination of ultrafine fillers and additives is used to form a high-filler polydicyclopentadiene composite material.

Benefits of technology

This study improved the hardness and heat distortion properties of high-filler polydicyclopentadiene composite materials, solved the equipment clogging problem, and enhanced the adaptability to industrial production.

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Abstract

This invention belongs to the field of polydicyclopentadiene products, specifically relating to a molding method for a high-filler polydicyclopentadiene composite material. The molding method includes the following steps: mixing and extruding a combination liquid A and a combination liquid B in a twin-screw extruder; the resulting liquid extrudate enters a mold cavity for polymerization molding; during the mixing and extrusion process, dicyclopentadiene polymerization does not occur in the combination liquid A and combination liquid B. This invention utilizes the characteristics of high-filler dicyclopentadiene, achieving shear mixing of the combination liquid A and combination liquid B through the forced mixing and compression action of the twin-screw extruder, achieving a material mixing effect essentially consistent with reaction injection molding. This allows for the production of high-filler polydicyclopentadiene composite material products without using reaction injection molding equipment, making the industrial production of polydicyclopentadiene composite material products with higher hardness and heat distortion properties possible.
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