1、A hybrid epoxy resin realized by facile glycidyl

Herein, we develop a facile approach of synthesizing hybrid epoxy resin by grafting the hydroxyl-containing E51 onto a branched prepolymer.

2、Grafting hyperbranched polymer with terminal hydroxyl groups onto

Hyperbranched polymer with terminal hydroxyl groups (HBPH) was grafted successfully onto carbon fiber (CFs) surface in two-step polycondensation to improve the interfacial properties of CFs-reinfor...

3、A hybrid epoxy resin realized by facile glycidyl

Herein, we develop a facile approach of synthesizing hybrid epoxy resin by grafting the hydroxyl-containing E51 onto a branched prepolymer.

Lignin

This research offers an innovative approach for developing recyclable, high-performance epoxy resins and promotes the sustainable advancement of epoxy resin technology through the high-value utilization of biomass resources and dynamic bond design.

Hyperbranched epoxy resin

Herein, graphene oxide (GO) sheets were covalently linked with hyperbranched epoxy resin (HBPEE-epoxy) to form HBPEE-epoxy functionalized GO (HPE-GO), which was then incorporated into epoxy resin (EP) matrix to achieve efficient and all-purpose enhancement of the properties of EPs.

Grafting strategies for hydroxy groups of lignin for producing

In this review paper, we discuss comprehensively the chemical reactions that were introduced in the literature for preparing lignin with different features via modifying its phenolic and aliphatic hydroxy groups for altered uses.

(PDF) Grafting epoxy resins

Epoxy resins of higher molecular weight were grafted with acrylic monomers, neutralized and reacted with N- butoxymethacrylamide to generate curing site on its backbone and give water...

Graphene oxide grafted by hyperbranched polysiloxane to enhance

Herein, a novel hyperbranched polysiloxane containing primary amine, tertiary amine and hydroxyl groups was prepared via transesterification through simple one-pot method.

Molecular Dynamics Simulations on Epoxy Resin Composite via Grafting

Electrical, thermal, and mechanical properties of cross-linked epoxy resin (EP) modified by the chemical grafting of acryloyl chloride (AC) were studied to explore the trapping mechanism of charge transport inhibition.

Hydroxyl

An effective approach to the fabrication of progressive epoxy nanocomposites by the incorporation of hydroxyl-terminated dendrimers functionalized graphene oxide (GO-TCT-Tris) is reported.

In the vast field of materials science, epoxy resins are highly favored for their excellent mechanical properties, electrical insulation, and chemical stability. their inherent brittleness and processing difficulties also limit their application in some areas. To overcome these limitations, scientists have modified epoxy resins through various methods, among which hydroxyl modification grafting technology has attracted much attention due to its unique advantages.

Hydroxylation modification grafting is a method of introducing organic or inorganic molecules with good reactivity into the molecular chain of epoxy resins. This modification process can significantly improve the toughness and temperature resistance of epoxy resins while maintaining their original chemical stability and electrical insulation. Next, we will discuss the principle, application fields, challenges, and prospects of this technology in detail.

Principle and Characteristics

The process of hydroxylation modification grafting usually involves two main steps: preparation of prepolymers and grafting reactions. In the prepolymer preparation stage, suitable monomers (such as epichlorohydrin) and initiators (such as azobisisobutyronitrile) are selected and polymerized at a certain temperature to form prepolymers with specific functional groups. The grafting reaction is to introduce target molecules (such as silane coupling agents) into the prepolymer to achieve intermolecular bonding through chemical reactions.

The main feature of hydroxylation modification grafting is that it can impart new properties to epoxy resins without changing their basic structure. For example, by introducing silicon-based groups, the adhesion strength and moisture resistance of epoxy resins can be significantly improved; by introducing fluorocarbon groups, their corrosion resistance and weather resistance can be enhanced. by adjusting the grafting density and type, the performance of modified epoxy resins can be precisely controlled to meet the needs of different application scenarios.

Application Areas

The application range of hydroxylation modification grafting technology is very wide, covering electronics, aviation, automobiles, construction, and many other fields. In the electronic industry, modified epoxy resins can be used to manufacture high-performance packaging materials, coatings, and adhesives to enhance product reliability and service life. In the aerospace field, this technology can be used to produce high-temperature and radiation-resistant composite materials, providing stronger protection for aircraft. In the automotive industry, modified epoxy resins can be used to制造 lightweight and high-strength automotive parts such as engine brackets and body structural components. In the construction industry, by improving the toughness and durability of epoxy resins, the service life of buildings can be extended, reducing maintenance costs.

Challenges and Prospects Faced

Despite the many advantages of hydroxylation modification grafting technology, some challenges still need to be addressed in practical applications. Firstly, the reaction conditions during the grafting process need to be strictly controlled to ensure the smooth progress of the reaction and the efficiency of grafting. Secondly, modified materials need to undergo strict testing and certification to prove that they can meet specific performance requirements. Additionally, due to the complexity of the grafting reaction, how to precisely control the grafting density and type is also a technical challenge.

Looking forward, hydroxylation modification grafting technology is expected to be applied in more fields. With the development of new materials science, we have reason to believe that through further optimization of reaction conditions and improvement of preparation processes, hydroxylation modification grafting technology will provide more excellent and diverse material solutions. with the increase of environmental protection requirements, developing green and degradable modified epoxy resin products will also be one of the important directions of future research.