1、Thermosetting resin modified asphalt: A comprehensive review

The material composition, modification mechanism, and curing behavior of epoxy asphalt, thermosetting polyurethane modified asphalt, unsaturated polyester modified asphalt, and other thermosetting resin modified asphalts are overviewed.

2、聚氨酯改性沥青高低温性能及影响因素的研究进展

Abstract: Polyurethane (PU) has received a lot of attention due to its high degree of freedom in performance adaptation. However, its diverse properties have led researchers to disagree on the effects of modifying the high and low temperature rheological properties of PU-modified asphalt.

3、Thermosetting Polymer Modified Asphalts: Current Status and Challenges

To develop eco-friendly and sustainable asphalt materials, this article also reviews the use of bio-based thermosetting polymers, including epoxy resin, polyurethane and phenolic resin, in asphalt modification.

Chemical upcycling of commodity thermoset polyurethane foams

Here we report a highly efficient chemical strategy for upcycling thermoset polyurethane foams that yields products of much higher economic values than the original material.

Properties of Thermosetting Polyurethane/Nano

This study prepared a composite-modified asphalt to address the challenges of asphalt pavement aging and cracking caused by elevated temperatures and ultraviolet (UV) radiation. The composite includes thermosetting polyurethane (TPU) and n a n o - T i O 2. The fundamental physical properties and rheological behavior of the composite-modified asphalt were evaluated using standard tests for ...

Preparation of High

Preparation of High-Performance Thermosetting Polyurethanes for Rapid Degradation and Recycling via Quadruple Boron–Oxygen Bonds.

Mechanical Properties and Modification Mechanism of Thermosetting

To study the mechanical properties and modification mechanism of thermosetting polyurethane (PU)-modified asphalt, the effects of polyurethane dosage on the workability of polyurethane-modified asphalt were analyzed by means of rotational viscosity tests.

Thermosetting Polyurethane Resins as Low

In this work, thermosetting polyurethane (PU)-based resins are proposed as effective encapsulants for perovskite solar cells to prevent degradation caused by both moisture and oxygen.

Thermosetting resin modified asphalt: A comprehensive review

The material composition, modification mechanism, and curing behavior of epoxy asphalt, thermosetting polyurethane modified asphalt, unsaturated polyester modified asphalt, and other...

Investigating on polymerization process and interaction mechanism of

Thermosetting polyurethane (PU) can significantly improve the high-temperature stability, mechanical strength, and low-temperature flexibility of asphalt. To broaden its application, a systematic understanding of how the PU interacts with the asphalt is needed.

Research Progress on Polyurethane-Modified Thermosetting Resins

Abstract: With the rapid development of materials science, polyurethane (PU) has emerged as a critical polymeric material due to its excellent mechanical properties, chemical resistance, and processability. traditional thermosetting resins suffer from inadequate mechanical strength, thermal stability, and long-term durability, limiting their applications in advanced fields. Incorporating PU into thermosetting resins not only enhances mechanical performance but also expands their application potential. This review summarizes recent advancements in PU-modified thermosetting resins, including modification methods, performance improvements, and future prospects.

Keywords: Polyurethane; Thermosetting resin; Modification; Performance enhancement; Application

1. Introduction Thermosetting resins, which cure through irreversible chemical reactions, are widely used in construction, automotive, and electronic industries due to their mechanical robustness and chemical stability. conventional thermosetting resins exhibit deficiencies in mechanical strength, heat resistance, and long-term stability, restricting their use in high-end applications. To address these limitations, researchers have explored integrating polyurethane (PU) into thermosetting resins to improve their overall properties.

2. Methods for Modifying Thermosetting Resins with PU

1. Physical Blending: PU is physically mixed with thermosetting resins to form composites. This approach is simple and cost-effective but may fail to fully resolve compatibility issues.
2. Chemical Grafting: PU is covalently bonded into thermosetting resin chains via grafting or block copolymerization, enhancing mechanical and thermal properties. Precision reaction control is required.
3. Nanocomposite Approach: Nanofillers (e.g., nano-CaCO₃, nano-SiO₂) are combined with PU and thermosetting resins to create nanocomposites. This improves mechanical and thermal performance but requires careful selection of fillers.

3. Performance Improvements in PU-Modified Thermosetting Resins

1. Enhanced Mechanical Properties: The composites exhibit higher tensile and compressive strength while retaining toughness and impact resistance.
2. Improved Thermal Stability: PU integration raises the glass transition temperature (Tg), enabling stability at elevated temperatures.
3. Chemical Resistance: Superior resistance to acids, alkalis, and salts improves corrosion resistance.
4. Optimized Processability: PU addition facilitates easy molding without post-processing thermal treatment.
5. Environmental Benefits: Reduced volatile organic compound (VOC) emissions make the materials eco-friendly.

4. Application Prospects of PU-Modified Thermosetting Resins

1. High-Performance Construction Materials: Suitable for bridges, high-rise buildings, etc., due to enhanced strength and heat resistance.
2. Automotive Components: Used in bumpers, engine parts, etc., to improve safety and lifespan.
3. Electronic Device Casings: Ideal for smartphones, tablets, etc., offering durability and safety.
4. Medical Devices: Applicable in implants and surgical instruments for improved performance and biocompatibility.

Research on PU-modified thermosetting resins provides innovative solutions to overcome the limitations of traditional thermosetting resins. By incorporating PU, both performance and application scope are significantly expanded. Future advancements are expected to unlock broader potential across diverse industries.