Light-heat dual-curing polyurethane acrylate resin as well as preparation method and application thereof

The unfriendliness of small molecule curing agents to the environment and lack of chemical bond crosslinking are solved by using a combination of hydroxy and amino-terminated polyurethane prepolymer, blocked isocyanate acrylate functional monomer and diluted monomer in a dual curing photosensitive resin. The problem of this achieves the effect of extending the use time and improving the performance of the material.

CN119285864APending Publication Date: 2025-01-10SUZHOU FLASHFORGE 3D TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202411531679.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-01-10

AI Technical Summary

Technical Problem

The existing double curing photosensitive resin materials have small and medium-sized curing agents that are not friendly to the environment, have a large odor and affect physical health. There is a lack of chemical bond crosslinking between acrylate resin and polyurethane resin, which limits the improvement of material performance.

Method used

The light-thermal double curing polyurethane acrylate resin is used to form a synergistic compound to extend the time of the resin by combining hydroxy and/or amino-terminated polyurethane prepolymer, blocked isocyanate acrylate functional monomer and diluted monomer. And improve mechanical properties and solvent resistance.

Benefits of technology

It effectively reduces the odor of the resin, extends the use time, and improves the mechanical properties and solvent resistance of the material by forming a dense cross-linked interpenetrating network structure.

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Abstract

The invention provides light-heat dual-curing polyurethane acrylate resin and a preparation method and application thereof, and the light-heat dual-curing polyurethane acrylate resin is prepared from the following raw materials in parts by weight: 20-80 parts of hydroxyl and / or amino-terminated polyurethane prepolymer; 10 to 70 parts of a blocked isocyanate acrylate functional monomer; 8-60 parts of a diluting monomer; and 0.5 to 2 parts of a photoinitiator. The photo-thermal dual-curing polyurethane acrylate resin provided by the invention has a relatively slow viscosity increasing rate, and can effectively help to prolong the service time of the resin; and excellent mechanical properties and solvent resistance are achieved.
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