Low-density anti-aging HIPS material and preparation method and application thereof

By incorporating specific compositions into HIPS materials to form a cross-linked network and a dense protective layer, the problem of easy aging of traditional HIPS materials outdoors is solved, achieving a balance between high aging resistance and mechanical properties, and extending service life.

CN120648146BActive Publication Date: 2025-12-12SHANDONG INTCO RECYCLING RESOURCES CO LTD +1
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Patent Information

Application Number
CN202510937006.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-08
Publication Date
2025-12-12
Estimated Expiration
2045-07-08

AI Technical Summary

Technical Problem

Traditional HIPS materials are prone to aging in outdoor applications. Ultraviolet rays and high temperatures cause the materials to yellow, lose gloss, reduce impact strength, and cause the cell walls to become brittle and crack. Existing technologies often sacrifice impact performance by adding light stabilizers or increasing the degree of crosslinking.

Method used

It employs a combination of high-impact polystyrene, recycled polyvinyl chloride, epoxy resin, nano zinc oxide, hindered amine light stabilizer, etc., along with AC foaming agent, activated silica, and nano lanthanum oxide to form a cross-linked network and a dense protective layer, enhancing the bonding force of the cell walls. It also utilizes the grafting of macromolecules onto the surface of nano-activated silica to enhance the interaction between molecular chains.

Benefits of technology

It significantly improves the aging resistance and mechanical properties of the material, extends its outdoor service life, and makes it less prone to yellowing, brittleness, and cracking, while maintaining excellent gloss and high impact resistance.

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Abstract

The application relates to the technical field of high-impact polystyrene, in particular to a low-density anti-aging HIPS material and a preparation method and application thereof. The low-density anti-aging HIPS material is prepared from the following raw materials in parts by mass: high-impact polystyrene 50-100 parts, regenerated polyvinyl chloride 10-30 parts, epoxy resin 1-5 parts, nano-zinc oxide 1-5 parts, hindered amine light stabilizer 1-5 parts, foaming agent 5-10 parts, filler 1-5 parts, antioxidant 1-2 parts, compatibilizer 1-2 parts and processing aid 1-2 parts; the foaming agent comprises AC foaming agent, activated silicon dioxide, nano-lanthanum oxide, dicumyl peroxide and polyether amine D230; the activated silicon dioxide is silicon dioxide grafted with a carboxyl-terminated polyamide amine. After being subjected to the action of sunlight, heat and oxygen for a long time, the HIPS material is not prone to phenomena such as yellowing, brittleness, cracking and loss of surface gloss, has excellent anti-aging performance, and has good product mechanical properties and high impact strength.
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