Modified Boron-Phenolic Resins

1、Boron

A boron-modified phenolic resin (BPR) that flows at usable processing temperatures was prepared from the solvent-less reaction of triphenyl borate (TPB) and paraformaldehyde (PF).

2、Research Progress in Boron

In this review, the current state of development of BPF and its composites is presented and discussed. After introducing various methods to synthesize BPF, functionalization of BPF is briefly summarized.

3、Boron

In this study, the thermal conductivities of phenolic resins and boron-modified phenolic resins were systematically investigated through experiments and MD simulations.

4、Research Progress in Boron

In this review, the current state of development of BPF and its composites is presented and discussed. After introducing various methods to synthesize BPF, functionalization of BPF is briefly...

5、Research Progress in Boron

Boron

ReaxFF MD simulations demonstrated that boron modification of phenolic resins enhanced the production of light hydrocarbons (C 1 -C 5) during pyrolysis, resulting in higher mass loss. This occurred via boron-mediated ring-opening and suppression of large aromatic cluster formation.

Homogeneous silicone

In this work, a homogeneous silicone-modified BPR (BSiPR) was synthesized by an in-situ hybridization strategy, achieving improvements in flexural strength (53.9 %), tensile strength (38.7 %), and fracture toughness (48.2 %) compared to neat BPR.

Study on Network Structure and Heat Resistance in Air of Boron

Phenolic aerogel is one of the most widely used lightweight thermal protective materials at present. With changes in the application environments, higher requirements are put forward for the heat resistance and mechanical properties of phenolic aerogel. In this paper, boric acid was used to modify phenolic resin, and then boron-modified phenolic aerogel was prepared. The chemical structure of ...

Enhanced thermal and mechanical properties of boron

This study aims to investigate the properties of boron-modified phenolic resin (BPR) composites reinforced with glass fiber (GF) and mica, SiO 2, and glass powder (MSG) for potential aerospace applications.

The aryl

Boron phenolic resin (BPR) is one of the most extensively utilized matrix resins in ablative field due to its outstanding heat resistance and ablation performance. However, the existing BPR applications are severely limited since they are unsuited for the resin-transfer molding (RTM) process.

Boron-phenolic resins, a widely used thermosetting resin-based composite material in industrial and construction fields, are renowned for their excellent physical properties, chemical stability, and cost-effectiveness. their inherent brittleness and processing challenges have limited broader applications. improving the performance of boron-phenolic resins through modification techniques to better suit modern material demands has become a critical research focus.

Research on modified boron-phenolic resins began in the 1960s, aiming to enhance mechanical strength, thermal resistance, chemical corrosion resistance, and processability. After decades of development, researchers have achieved diverse modification methods, including reinforcement with fillers, blending modification, grafting modification, and nanotechnology.

Reinforcement with Fillers is one of the most common techniques. By adding high-strength fillers such as glass fibers, carbon fibers, or silica sand to boron-phenolic resins, tensile and flexural strengths can be significantly improved. For example, incorporating glass fibers increases the tensile strength to over 400 MPa, while carbon fibers can exceed 500 MPa. These高性能填料 (high-performance fillers) not only enhance mechanical properties but also reduce material density, offering broad application prospects in aerospace, automotive manufacturing, and other fields.

Blending Modification involves combining boron-phenolic resins with other resins or high-performance polymers to improve overall properties. For instance, blending with epoxy resins enhances toughness and impact resistance, while mixing with polyetheretherketone (PEEK) improves thermal and chemical resistance. Such blending technologies expand the application range of boron-phenolic resins and boost their stability and reliability under extreme conditions.

Grafting Modification introduces functional groups (e.g., amino, carboxyl, hydroxyl) into the molecular chains of boron-phenolic resins, improving surface properties and chemical stability. For example, grafting modifications have significantly enhanced the hydrophilicity of boron-phenolic resins, enabling their use in water-based coatings. Additionally, this approach improves wear resistance and UV resistance.

The application of nanotechnology has revolutionized modified boron-phenolic resins. Adding nanoparticles like silicon dioxide or carbon nanotubes substantially improves mechanical, thermal, and electrical properties. For example, nano-silica-modified resins exhibit higher hardness and wear resistance, while carbon nanotube-modified resins show superior electrical conductivity and thermal conductivity. These advancements have opened possibilities for applications in electronics, energy, and environmental protection.

Despite significant performance improvements, cost remains a key constraint for widespread adoption. Researchers are exploring more economical approaches, such as using bio-based materials and recycling, to reduce costs. These efforts may enable broader future applications.

the research and application of modified boron-phenolic resins continue to advance. Through ongoing technological innovation and optimization, boron-phenolic resins are poised to deliver even greater performance, meet diverse needs, and play a pivotal role in the development of new materials.