1、Fracture toughness and surface morphology of polysulfone
The thermal stability, fracture toughness, flexural strength, and surface morphology of a polysulfone (PSF)-modified epoxy resin were investigated using several techniques.
2、Enhancing the Mechanical and Thermal Properties of Epoxy Resin via
Efficient enhancement of the toughness of epoxy resins has been a bottleneck for expanding their suitability for advanced applications. Here, polysulfone (PSF) was adopted to toughen and modify the epoxy.
3、Influence of Polysulfone Modifier on Impact Strength of Epoxy Resin at
It was shown that the epoxy resin modified with polysulfone has increased impact strength and retains an advantage over the unmodified one in the entire range of test temperatures.
4、聚砜改性环氧树脂的断裂韧性和表面形貌,Journal of Industrial
Abstract The thermal stability, fracture toughness, flexural strength, and surface morphology of a polysulfone (PSF)-modified epoxy resin were investigated using several techniques. The thermal stability of the PSF-modified epoxy resin was similar to that of the neat epoxy resin.
5、Structure and Properties of Epoxy Polysulfone Systems Modified with an
An epoxy resin modified with polysulfone (PSU) and active diluent furfuryl glycidyl ether (FGE) was studied. Triethanolaminotitanate (TEAT) and iso-methyltetrahydrophthalic anhydride (iso-MTHPA) were used as curing agents.
Morphology control in polysulfone‐modified epoxy resins by demixing
Polysulfone (PSu) was used as a modifier of epoxy/aromatic diamine formulations. Two epoxy monomers, based on diglycidyl ether of bisphenol A (DGEBA), were used.
[PDF] Morphology control in polysulfone‐modified epoxy resins by
We have studied an epoxy resin formulation consisting of the diglycidyl ether of bisphenol-A (DGEBA), modified with phenolic hydroxyl-terminated polysulfone (PSF) and cured with an aromatic amine…
Adhesive and Mechanical Properties of Reactive Polysulfone Modified
This paper provides an in-depth study in the various methods for toughening epoxy (EP) resin with polyamide (PA) across a range of length scales—from the atomic to the macroscopic.
Phase separation in polysulfone
Chemorheology of curing as well as the phase separation behavior of polysulfone (PSU)-modified diaminodiphenylmethane-cured diglycidylether of bisphenol-A epoxy mixtures have been studied using several techniques.
Development of Polyethersulfones for Modification of Epoxy Resins
In this regard, epoxy systems modified with heat-resistant structural and superstructural thermoplastics, such as polycarbonate, polyetherimides, and polyethersulfones, have been actively developed in recent decades to improve impact characteristics and reduce chemical shrinkage and residual stress [22‒33].
Polysulfone-Modified Epoxy Resins: Exploration and Application of a High-Performance Composite Material
In modern materials science, epoxy resins are widely favored for their excellent mechanical properties, electrical insulation, and chemical stability. pristine epoxy resin materials often struggle to meet the stringent performance requirements of specific application scenarios, such as high-temperature environments, humid conditions, or applications demanding high strength and wear resistance. Consequently, modifying epoxy resins to enhance their performance has become a research hotspot. Polysulfone (PSF), a polymer material with superior physical and chemical properties, including exceptional heat resistance, chemical corrosion resistance, and processability, emerges as an ideal candidate for epoxy resin modification.
Research Background of Polysulfone-Modified Epoxy Resins
Polysulfone is a thermoplastic polymer synthesized through the reaction of aromatic or aliphatic diamines with aromatic disulfonic acids. It boasts excellent thermal stability, solvent resistance, and anti-creep properties. Due to its molecular structure, PSF exhibits robust mechanical and processing capabilities while maintaining chemical stability and weather resistance. Incorporating PSF into an epoxy matrix significantly improves the mechanical properties of the epoxy resin, such as strength, toughness, and fatigue resistance.
Preparation Methods for Polysulfone-Modified Epoxy Resins
The fabrication of PSF-modified epoxy resins primarily relies on blending methods. First, an appropriate PSF modifier is selected and uniformly dispersed into the epoxy matrix via melt or solution mixing. The mixture is then cured to induce chemical reactions between PSF and epoxy, forming a stable composite. Common curing techniques include thermal, photo, and electro-curing, with thermal curing being widely used due to its simplicity and cost-effectiveness. To further optimize comprehensive performance, additives like fillers or coupling agents may be incorporated to refine the material’s composition and structure.
Performance Characteristics of Polysulfone-Modified Epoxy Resins
The modified epoxy resins demonstrate the following notable advantages:
- Enhanced Mechanical Properties: PSF incorporation improves tensile strength, flexural strength, and impact resistance, making the material suitable for load-bearing structural components.
- Improved Heat Resistance: PSF’s thermal stability allows the composite to maintain performance at elevated temperatures, enabling applications in harsh thermal environments.
- Corrosion Resistance: PSF’s inherent corrosion resistance extends the service life of epoxy-based materials, reducing maintenance costs.
- Optimized Processability: PSF addition improves flowability and machinability, facilitating advanced molding processes.
- Environmental Compatibility: PSF, often derived from bio-based sources, endows the composite with eco-friendly attributes, aligning with green manufacturing principles.
Application Prospectives of Polysulfone-Modified Epoxy Resins
Owing to their superior integrated performance, PSF-modified epoxy resins hold promise across diverse fields:
- Aerospace: Lightweight yet strong, they are ideal for aircraft and spacecraft structural parts.
- Automotive Industry: Suitable for engine components and chassis parts to enhance vehicle safety and reliability.
- Electronics: Used in circuit boards and electronic encapsulants to improve durability and reliability.
- Construction: Applied in structural reinforcement and repair to extend building lifespans.
- Medical Devices: Employed in surgical instruments and artificial joints to boost precision and longevity.
Polysulfone-modified epoxy resins represent a high-performance composite material achieved through the synergistic combination of PSF and epoxy. Their potential applications span aerospace, automotive, electronics, construction, and medical devices, reflecting vast market prospects. As demand for advanced composites grows, research and application of PSF-modified epoxy resins will continue to advance, driving innovation in material engineering.
