1、阻燃不饱和聚酯研究进展

This paper overview the research and application progress in the flame⁃retardant modification of thermosetting unsaturated polyester resins （UPRs） in recent years， which includes the additive and reactive flame⁃retardant methods.

2、A comparative study of a modified unsaturated polyester resin with

The study of the curing reaction of DCPD-modified unsaturated polyester resins was conducted by several Taiwanese authors [10]. In this study polyester (based on MA, DEG and DCPD) was prepared in the classic way - without the addition of water.

3、Modification of Unsaturated Polyester Resin : A Review

Reviewing the modification of unsaturated polyester resin leads to the conclusion that modified unsaturated polyester resin has a wide range of application, including coatings, marine, aerospace industry, construction and bio-based applications.

4、Unravelling the thermal behavior and kinetics of unsaturated polyester

The curing behavior of the unsaturated polyester resin containing organically modified clay was investigated using dynamic differential scanning calorimetry (DSC), followed by kinetic analysis using isoconversional methods.

5、A drive towards green – Unsaturated polyester resins: A critical review

Unsaturated polyester resin (UPR) is at the forefront of sustainable innovation because of its exceptional resilience, durability, and chemical resistance.

(PDF) Modification to unsaturated polyester resin with silica and

Purpose-This study aims to investigate the effects of nano or inorganic fillers on unsaturated polyester's (UPE) thermal, mechanical, and physical properties. UPE reinforced with...

Modification of unsaturated polyester resin by HTPB: effect of

By using the co-curing method and copolycondensation method, three kinds of modified unsaturated polyester resin (UPR) with high cis -1,4 hydroxyl-terminated polybutadiene (HTPB) were prepared, which were blends of UPR and HTPB [UPR+HTPB (blend)], random copolycondensate of UPR and HTPB (UPR-HTPB), and block copolycondensate of UPR ...

Modified unsaturated polyester resins synthesized from poly

The glycolyzed products obtained were reacted with p-hydroxybenzoic acid (PHBA) and maleic anhydride (MA) to prepare modified unsaturated polyesters. The molar ratio of added PHBA was varied in order to investigate its effect on the curing characteristics of thes modified unsaturated polyesters.

Synthesis, Characterization and Application of Biobased Unsaturated

Biobased unsaturated polyester resin (b-UPR), synthesized from waste polyethylene terephthalate (PET) glycosylate and renewable origin maleic anhydride (MAnh) and propylene glycol (PG), was reinforced with unmodified and vinyl-modified biosilica nanoparticles obtained from rice husk.

Advancements in monomers and reinforcements of unsaturated polyester

Unsaturated polyester Resins (UPR) are crucial in modern materials science due to their versatility, mechanical properties, and ease of processing. They find extensive applications in industries ranging from automotive to construction.

In the field of modern materials science, modified unsaturated polyester resins (MUPRs) stand out as a critical class of synthetic materials with diverse applications, ranging from construction structures and automotive components to electronic enclosures. This paper provides an in-depth analysis of the chemical composition, physical properties, practical performance, and advantages of MUPRs.

I. Basic Concept of Modified Unsaturated Polyester Resins

Modified unsaturated polyester resins are advanced polymeric materials formulated by incorporating functional fillers, plasticizers, curing agents, and other additives into an unsaturated polyester matrix through specialized processing. These resins exhibit excellent mechanical properties, chemical resistance, electrical insulation capabilities, and stable processing characteristics.

II. Chemical Composition and Physical Properties

The formulation of MUPRs primarily comprises polyols, low-molecular-weight polyesters, crosslinking agents, catalysts, and pigments. Polyols form the resin’s backbone, dictating initial viscosity and final hardness, while low-molecular-weight polyesters act as crosslinkers to establish a three-dimensional network during curing. The type and dosage of crosslinkers directly influence mechanical strength and thermal stability.

Key physical properties of MUPRs include viscosity, hardness, flexibility, impact resistance, and heat resistance. For instance, high-hardness resins are preferred for rigid applications like automotive body panels, whereas flexible resins with ease of processing are suitable for pipelines and cable insulation materials.

III. Practical Applications of Modified Unsaturated Polyester Resins

1. Construction Materials MUPRs are widely used in exterior wall coatings, waterproof materials, flooring, and sealing strips due to their adhesive properties, weather resistance, and cost-effectiveness. By incorporating varied pigments and fillers, resins can be customized to match architectural aesthetics.

2. Electronics and Electricals In electronics, MUPRs serve as substrates for copper-clad laminates, printed circuit boards (PCBs), and packaging materials. Their electrical insulation and mechanical protection capabilities enhance device longevity.

3. Automotive Industry MUPRs play a vital role in automotive adhesives, engine hood coverings, and interior trim. These applications demand high mechanical strength, temperature resistance, and chemical durability to ensure safety and reliability.

IV. Advantages and Challenges of Modified Unsaturated Polyester Resins

While MUPRs offer unparalleled performance benefits, escalating demands across industries necessitate ongoing research. Developing novel modifiers, crosslinkers, and additives to improve comprehensive properties remains a focal area. Additionally, eco-friendly formulations aligned with stringent environmental regulations represent a critical future direction.

As a high-performance polymer material, modified unsaturated polyester resin holds vast potential in modern industrial applications. By optimizing formulations and refining manufacturing processes, resin performance can be further enhanced. With advancements in material science, MUPRs are poised to play an increasingly significant role in shaping the future of materials engineering.