A wear-resistant and impact-resistant thermosetting gel coat resin and its preparation method and application

By using wear-resistant and impact-resistant thermosetting rubber coat resins such as thermosetting resins, wear-resistant powder materials and chopped fibers, the problem of existing resin rubber coat layers being easily damaged in the river sand basin is solved. The rubber coat layer formed has excellent wear-resistant and impact-resistant performance, which improves the life and safety of the ship.

CN116731602BActive Publication Date: 2025-03-25CHINA SHIP DEV & DESIGN CENT
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Patent Information

Application Number
CN202310441163.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-23
Publication Date
2025-03-25
Estimated Expiration
2043-04-23

AI Technical Summary

Technical Problem

When used in a basin with high river sand content, the existing resin gel coat layer is susceptible to the erosion and friction of river sand and damage and fall off, affecting the life and safety of the ship.

Method used

Wear-resistant and impact-resistant thermoset gel coat resin composed of raw materials such as thermoset resin, wear-resistant powder materials and chopped fibers is used to form a gel coat layer with a thickness of ≥2mm through vacuum pressurization technology to enhance the compactness and mechanical properties of the gel coat layer.

Benefits of technology

The formed rubber coat layer has excellent wear resistance and impact resistance, can resist external impact and wear, avoid loosening, layering or brittle cracking, protect the fiber layer inside the ship composite material, and improve the life and safety of the ship.

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Abstract

The present invention belongs to the technical field of functional materials, and discloses a wear-resistant and impact-resistant thermosetting gel coat resin, a preparation method and an application thereof. The wear-resistant and impact-resistant thermosetting gel coat resin comprises component A, component B and component C; wherein component A comprises the following raw materials in parts by weight: 10 to 30 parts of thermosetting resin, 10 to 60 parts of wear-resistant filler, 5 to 20 parts of auxiliary filler, 2 to 5 parts of thixotropic agent, and 3 to 5 parts of reinforcing fiber; component B comprises a curing agent, the mass of which is 1 to 3% of the total mass of component A; component C comprises an accelerator, the mass of which is 1 to 3% of the total mass of component A. The gel coat resin of the present invention has excellent wear-resistant and impact-resistant properties. When coated on the surface of a composite material of a ship hull, the formed gel coat layer is firmly attached to the composite material, and has certain strength and toughness, can resist external impact and wear, avoid loosening, delamination or brittle cracking, protect the fiber layer inside the ship composite material, and improve the life and safety of the ship.
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