A method for forming a high filler polydicyclopentadiene composite

By using a twin-screw extruder for forced mixing and shearing and temperature control, the problems of equipment blockage and wear in the production of high-filler polydicyclopentadiene composite materials have been solved, enabling the production of polymer materials with higher hardness and heat distortion properties.

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

Application Number
CN202311383050.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-24
Publication Date
2026-07-03
Estimated Expiration
2043-10-24

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 and wear of plunger pumps, leading to poor adaptability to industrial production.

Method used

A twin-screw extruder is used to force-mix and compress the A and B composite liquids, shearing and mixing them with almost no polymerization, and then polymerizing them through a die cavity. Temperature and filler particle size are controlled to achieve the molding of high-filler polydicyclopentadiene composite material.

Benefits of technology

It improved the hardness and heat distortion properties of polymer materials, solved the problems of equipment blockage and wear, and realized the industrial production of high filler systems.

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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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