1、Research progress on modification of phenolic resin

In recent years, more and more researchers have focused on the discussion of the properties of modified phenolic resins and gradually ignored the research on the synthesis processes that can affect the molecular structure and properties of phenolic resins.

2、Preparation and Properties of Acetoacetic Ester

In the present study, acetoacetic ester-terminated polyether was selected as a modifier to prepare a new type of polyether phenolic resin, which was successfully prepared by pre-synthesis modification.

3、Preparation and Properties of Acetoacetic Ester

In the present study, acetoacetic ester-terminated polyether was selected as a modifier to prepare a new type of polyether phenolic resin, which was successfully prepared by pre-synthesis modification.

4、Novel reactive phenolphthalein

In this study, hydroxyl end groups were integrated into phenolphthalein polyether ketone (PEKC) molecular chains to engage in the cross-linking reaction during epoxy curing, significantly enhancing the toughening effect on the epoxy system.

5、Synthesis and characterization of polyethylene glycol

Phenolic foams are prepared with phenolic resins that are synthesized by the condensation polymerization between phenol and formaldehyde under alkaline conditions. The foams have many...

Synthesis and characterization of polyethylene glycol

Using isocyanate as curing agents and phenolic resin matrix as polyether polyols to prepare PU composite materials has an important significance for obtaining foams with excellent mechanical and flame retardant properties.

(PDF) A review on Phenolic resin and its Composites

Results: Currently, modified phenolic resins are broadly used in the fabrication of synthetic/natural fiber reinforced composites in order to replace metals and ceramics on industrial level...

Synthesis of phosphorus

In this study, a phosphorus-containing and polyether structure modifier, phenolic epoxy phosphate ester (PEPE), was prepared by the reaction of phenolic epoxy resin (EPN) and phosphoric acid.

Enabling phenolic resin toughening and heat resistant: Tactics and

To satisfy high-end and demanding application requirements, phenolic resin modification always stays the research focus in this field. This review involved two main characteristics of phenolic resins, toughness and heat resistance.

A comprehensive review on modified phenolic resin composites for

Current research on PR modification emphasizes both physical methods, including filler enhancement and fiber reinforcement, and chemical methods, such as copolymerization, grafting, and cross-linking.

Phenolic resin modified with polyether is a critical high-performance thermosetting resin widely used in aerospace, automotive manufacturing, electronic and electrical industries, and other fields. It exhibits excellent mechanical properties, heat resistance, and electrical insulation, along with good processability and adhesive performance. The preparation methods for polyether-modified phenolic resin include copolymerization of phenolic resin with polyether monomers, blending of phenolic resin with polyether polyols, and other approaches. This article introduces the preparation methods and application fields of polyether-modified phenolic resin.

Preparation of Phenolic Resin Modified with Polyether

1. Selection of Phenolic Resin: Appropriate phenolic resin must first be chosen as the raw material. Phenolic resin is a high-molecular-weight polymer synthesized through condensation reactions between phenolic compounds and aldehydes, offering excellent heat resistance and mechanical properties. Common types include phenolic-formaldehyde resin, phenolic-epoxy resin, and others.

2. Selection of Polyether Monomers: Polyethers are organic compounds containing hydroxyl groups. Typical polyether monomers include polyethylene glycol (PEG) and polypropylene glycol (PPG). Polyether-modified phenolic resin is produced via copolymerization of phenolic resin with these polyether monomers.

3. Copolymerization Conditions: Copolymerization reactions typically occur at high temperatures, ranging from 180°C to 250°C. Reaction duration varies depending on resin characteristics and requirements, generally spanning from several hours to several days.

4. Blending Reaction Conditions: Blending reactions are conducted at ambient or slightly elevated temperatures (room temperature or higher). These processes are shorter, usually lasting from minutes to dozens of minutes.

5. Post-Treatment: After copolymerization, post-treatment steps such as drying, grinding, and sieving are performed to achieve the desired particle size and properties.

Application Fields of Phenolic Resin Modified with Polyether

1. Aerospace: Due to its exceptional heat resistance, electrical insulation, and mechanical properties, this resin is widely used in aerospace applications, such as aircraft engine components and spacecraft exterior shells.

2. Automotive Manufacturing: It is also employed in automotive manufacturing due to its wear resistance, impact resistance, and chemical stability. Applications include automotive parts and body materials.

3. Electronic and Electrical Industries: Its superior electrical insulation and dielectric strength make it suitable for manufacturing circuit boards, capacitors, and other electronic components.

4. Construction: In construction, the resin’s adhesive properties and water resistance enable its use in flooring, wall materials, and other building products.

5. Other Fields: Polyether-modified phenolic resin is also utilized in chemicals, petroleum, textiles, and other industries.

As a high-performance thermosetting resin, phenolic resin modified with polyether holds broad application prospects and market demand. By understanding its preparation methods and application fields, we can better leverage its advantages to contribute to advancements across industries.