1、Modification of Unsaturated Polyester Resin : A Review
To satisfy the demanding properties of a modification of unsaturated polyester resin, this paper aims to provide an overview of current modifications made in polyester resin by scientific endeavors as well as find various appropriate materials and procedures used for modification.
2、Study on modification of water
The unsaturated polyester resin was modified with silane coupling agent,silica and organosilicon hydrophobic agent.FT-IR was used to characterize the materials,and the influence of modifiers on the mechanical properties and water resistance of the unsaturated polyester resin was investigated.The results showed that the addition of ...
3、Applications of Unsaturated Polyester Resins
Applications of Unsaturated Polyester Resins: Synthesis, Modifications, and Preparation Methods takes a practical approach to unsaturated polyester-based materials and their preparation for implementation in a range of innovative areas.
4、Sustainable Reinforcement: Advancing Nanocellulose Modification for
In this study, biocomposite materials were developed by reinforcing a biobased unsaturated polyester resin with cellulose nanofibers to meet the demand for sustainable, high-performance materials.
5、Modification of Waterborne Polyester Resin and Its Application in Color
Using trimellitic anhydride， adipic acid and neopentyl glycol as raw materials， along with dibutyl tin dilaurate as catalyst， the unmodified water-based polyester resin was synthesized through a xylene reflux dehydration polycondensation reaction process.
(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 nanoparticles...
Hybrid Modification of Unsaturated Polyester Resins to Obtain
In recent years, the influence of hydrophobicity of a surface on its icephobic properties has been studied. This solution is based on the idea that a material with poor wettability maximally reduces the contact time between a cooled drop of water and the surface, consequently prevents the formation of ice, and decreases its adhesion to the surface.
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 ...
Modification of unsaturated polyester resins (UP) and
This study focuses on developing bio-based solventless unsaturated polyester resins, and results show that resins based on 2,5-furandicarboxylic acid have superior thermomechanical properties compared to commercial reference resins.
[PDF] Modification of unsaturated polyester resin by polyurethane
The modification of a commercially available unsaturated polyester resin with 4,4′-bismaleimidodiphenylmethane is presented. The properties of the modified resins were compared with those of the…
With the advancement of technology and industrial development, the functional requirements for materials have become increasingly stringent. As a critical member of the plastics family, polyester resin is widely utilized across various fields due to its excellent mechanical properties, chemical stability, and cost-effectiveness. unmodified polyester resin often fails to meet specific application demands, making its modification particularly important. This paper aims to explore methods for modifying polyester resins and analyze their impact on performance enhancement.
The basic properties of polyester resin include superior mechanical characteristics, such as high elasticity and impact resistance, along with good chemical resistance and electrical insulation. These traits enable its widespread use in packaging materials, automotive interiors, electronics, and other sectors. due to its relatively simple molecular structure, polyester resin may exhibit poor heat resistance, wear resistance, and proneness to embrittlement under long-term use in extreme conditions.
To overcome these limitations, modifying polyester resin has become a key research focus. Modification methods are diverse, including but not limited to filling modification, blending modification, grafting modification, and crosslinking modification. The following sections introduce these techniques and their effects.
Filling Modification involves adding fillers to the polymer matrix to improve material properties. Common fillers include inorganic materials like glass fibers, carbon fibers, and diatomite, as well as organic materials such as polyamides and polyethers. These fillers effectively enhance rigidity, heat resistance, and wear resistance. For example, glass fibers significantly increase tensile strength and flexural modulus, while diatomite improves ultraviolet (UV) resistance.
Blending Modification combines two or more polymers with different properties through physical or chemical means to achieve novel performance synergies. Blending leverages the strengths of diverse polymers, enabling complementary properties. For instance, blending polyester resin with polyetheretherketone (PEEK) produces composites with both high toughness and strength, suitable for high-performance electronic packaging.
Grafting Modification introduces functional groups into the polymer backbone via chemical reactions, imparting new properties such as hydrolysis resistance or flame retardancy. For example, grafting maleic anhydride (MAH) monomers yields polyester resins with enhanced weatherability.
Crosslinking Modification alters the polymer chain structure via chemical or radiation-induced methods, improving mechanical strength and thermal stability. Crosslinked polyester resins maintain high strength and flexibility at elevated temperatures while reducing creep. Common crosslinking agents include peroxides and silane coupling agents.
Modified polyester resins demonstrate broader applicability, meeting strict performance requirements across industries. modification processes may increase costs and environmental impact. Thus, economic, practical, and eco-friendly considerations must be balanced when selecting modification methods.
polyester resin modification is an interdisciplinary and technically intensive field. By applying various modification strategies, polyester resin performance can be significantly enhanced, expanding its industrial applications. In the future, advancements in material technologies will likely drive more diversified and efficient modifications, contributing further to human progress.
