1、Urushiol modified epoxy acrylate as UV spray painting oriental lacquer

This is due to the fact that the modified UV spray painting ink contains prepolymers synthesized from raw materials such as urushiol, epoxy resin, and acrylic acid, and introduces the components of oriental lacquer.

2、Natural resin

Urushiol, extracted from natural resin-raw lacquer, has been capped with diphenylphosphoryl chloride to afford a biobased flame retardant, namely urushiol-based phosphonate (U-DC). As an additive this material is effective in reducing flammability while maintaining good mechanical strength for epoxy resins (EP).

3、Jing, Xu：漆酚改性环氧丙烯酸酯作为紫外光喷涂东方漆油墨

论论资讯 ｜ 2023-01-03｜ 7热度 Urushiol modified epoxy acrylate as UV spray painting oriental lacquer ink Wu Lujing; Zhu Wenkai; Li Zequn; Li Huimin; Xu Jing; Li Song; Chen Meiling Published： 2023-01-03 DOI： 10.1039/d2ra06685h

4、Modification of Urushiol Derivatives by Liquid Crystal Epoxy Resin

In this study, urushiol-furfural (UFUR) was chosen as an example of urushiol derivatives and a liquid crystal (LC) epoxy resin, tetramethylbiphenyl diglycidyl ether (TMBPDE), was for the first time utilized to modify UFUR.

Urushiol modified epoxy acrylate as UV spray painting oriental lacquer

A new film-forming resin with excellent properties of oriental lacquer can be synthesized as a component for the preparation of painting oriental lacquer ink. In this study, we extracted lacquer phenol from oriental lacquer and modified the epoxy acrylate to obtain lacquer phenol epoxy resin.

Fabrication of epoxy sustained

Then, the epoxy resin coating embedding E-UMs was prepared, which was subsequently used in a retained-release anti resistant bacterial coating. Further antibacterial test was conducted to monitor their anti resistant bacterial activities, and release behavior of EO were also monitored.

Urushiol modified epoxy acrylate as UV spray painting

Herein, based on the principle of oriental lacquer and the characteristics of prepolymer in ink, we developed a new prepolymer for modulating UV oriental lacquer ink and explored the feasibility of using it as a raw material for UV spray painting.

Urushiol modified epoxy acrylate as UV spray painting oriental lacquer

This is due to the fact that the modified UV spray painting ink contains prepolymers synthesized from raw materials such as urushiol, epoxy resin, and acrylic acid, and introduces the components of oriental lacquer.

Natural resin

Semantic Scholar extracted view of "Natural resin-derived urushiol-based phosphorylation derivative towards flame-retardant and mechanically strong epoxy resin" by Kai-Xing Liang et al.

Modification of Urushiol Derivatives by Liquid Crystal Epoxy Resin

In this study, urushiol-furfural (UFUR) was chosen as an example of urushiol derivatives and a liquid crystal (LC) epoxy resin, tetramethylbiphenyl diglycidyl ether (TMBPDE), was for the first time utilized to modify UFUR.

In modern industry, epoxy resins, as high-performance thermosetting polymers, are widely used across various fields due to their unique chemical stability, mechanical strength, and electrical insulation properties. inherent drawbacks such as brittleness and high water absorption have limited their broader applications. To overcome these challenges, researchers have developed a series of modification methods, among which urushiol-modified epoxy resins represent a significant advancement. This article explores the concept, preparation methods, and practical applications of urushiol-modified epoxy resins.

I. Concept of Urushiol-Modified Epoxy Resins

Urushiol, an organic compound containing phenolic groups, exhibits excellent reactivity and film-forming properties. Incorporating urushiol into epoxy resin systems can effectively enhance performance, improving water resistance, chemical resistance, and mechanical properties. Urushiol-modified epoxy resins are typically achieved through blending, grafting, or cross-linking approaches. By adjusting the ratio and structural design of urushiol to epoxy resin, optimal modification effects can be achieved.

II. Preparation Methods for Urushiol-Modified Epoxy Resins

1. Blending Method The blending method is one of the most common approaches. It involves mixing urushiol with epoxy resin at a specific ratio, followed by heating, pressing, or mechanical stirring to ensure uniform distribution. While simple and cost-effective, this method may compromise the final material’s properties.

2. Grafting Method The grafting method chemically bonds urushiol to the epoxy resin molecular chain. Epoxy resins with active functional groups are first prepared and then reacted with urushiol to form stable urushiol-epoxy copolymers. This approach improves urushiol dispersion, enhancing mechanical properties.

3. Cross-Linking Method The cross-linking method involves forming chemical bonds between urushiol and epoxy resin through reactions. Cross-linking agents like formaldehyde or glyoxal are commonly used to improve compatibility, thereby enhancing mechanical performance and thermal stability.

III. Applications of Urushiol-Modified Epoxy Resins

Owing to their superior properties, urushiol-modified epoxy resins have found widespread use in fields such as electronic encapsulation materials, coatings, and composites. Additionally, growing environmental awareness has positioned them as a research focus in green polymer materials.

IV. Challenges and Prospects of Urushiol-Modified Epoxy Resins

Despite their advantages, several challenges remain. For instance, urushiol addition may affect processing properties like flowability and viscosity, and disrupt the curing process. Future research should focus on optimizing urushiol dosage and distribution to improve overall performance.

urushiol-modified epoxy resins, as emerging materials, hold vast potential. With ongoing innovation, it is anticipated that more high-performance, eco-friendly urushiol-modified epoxy products will emerge in the market.