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、Modification of Unsaturated Polyester Resin : A Review
Unsaturated Polyester Resin has endured modification to become nano-composites, composites, interpenetrating polymer networks (IPNs), blends and more. Unsaturated polyester resins are blended with a variety of materials to enhance their fracture and impact resistance.
3、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.
Composites of Unsaturated Polyester Resins with Microcrystalline
The paper investigates the properties of unsaturated polyester resins and microcrystalline cellulose (MCC) composites. The influence of MCC modification on mechanical, thermomechanical, and thermal properties of obtained materials was discussed.
Study on Composite Materials Based on Unsaturated Polyester Resin
This study focuses on partially replacing GF and UPE resin with modified rice husk (MRH) to reduce the content of non-biodegradable components in such composites. As rice husk (RH) is also an agricultural waste, this approach can positively contribute to environmental treatment efforts.
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.
(PDF) Unsaturated polyester resin synthesis for enhanced fiber
This research aims to enhance traditional glass fiber composites by utilizing a mediumreactive unsaturated polyester resin (UPR) synthesized from ortho-phthalic anhydride.
A drive towards green – Unsaturated polyester resins: A critical review
In particular, a thorough investigation is conducted into the application of bio-based acids like itaconic acid, succinic acid, and muconic acid, as well as bio-based alcohols like 1,3-propanediol and sorbitol.
A comparative study of a modified unsaturated polyester resin with
Meanwhile, Yu et al. prepared unsaturated polyester resin composites modified by bio-based electrolyte chitosan and melamine (Fig. 6), resulting in a significant improvement in the resin's thermal and flame retardant properties (Yu et al., 2017).
The advancement of materials science in today's industrial and construction sectors has led to countless innovations. Among them, modified unsaturated resins, as a class of important polymeric materials, have shown tremendous potential in performance enhancement, cost optimization, and environmental adaptability. This article will delve into the components and characteristics of modified unsaturated resins, analyze their application in practical engineering, and look forward to future development trends.
Modified unsaturated resins are a class of polymeric materials that change their molecular structure or function through chemical or physical methods. These resins are usually polymerized from unsaturated monomers and have good mechanical properties and processability, making them widely used in coatings, adhesives, composite materials, etc.
The components of modified unsaturated resins mainly include unsaturated monomers with low saturation, such as styrene, acrylonitrile, etc., as well as functional additives used to adjust the polymer chain structure and properties. These additives include initiators, crosslinkers, fillers, pigments, plasticizers, etc.
The function of initiators is to initiate the polymerization reaction of unsaturated monomers. Commonly used ones include benzoyl peroxide, azobisisobutyronitrile, etc. Crosslinkers play a role in forming a three-dimensional network structure during the polymerization process of unsaturated monomers, improving the strength and heat resistance of the resin. For example, in epoxy resins, phenolic resins; in polyurethanes, polyisocyanates, etc. Fillers like glass fibers, carbon fibers, can increase the hardness and rigidity of the resin, while plasticizers can reduce the glass transition temperature of the resin and improve its flexibility.
The applications of modified unsaturated resins are very wide. In the coating industry, they can provide good adhesion, wear resistance, and corrosion resistance, suitable for various metal, plastic, and concrete surfaces. In the adhesive field, modified unsaturated resins are widely used in industries such as electronic packaging, automobile manufacturing, and furniture assembly due to their excellent bonding strength and temperature resistance. modified unsaturated resins can also serve as reinforcing materials, compounded with high-performance fibers such as carbon fibers and glass fibers, to prepare high-strength, high-modulus composites used in aerospace, sports equipment, and transportation fields.
With the progress of technology, the performance of modified unsaturated resins is constantly improving. Researchers have achieved precise control over the curing process of resins through optimization of the resin formula, enhancing the mechanical properties and durability of the resins. Meanwhile, the introduction of new functional additives has also brought new possibilities to the performance of resins. For example, by introducing nanoparticles, the thermal conductivity of the resin can be significantly improved; by introducing photoinitiators, real-time monitoring and regulation of the curing process of the resin can be realized.
In the future, the development of modified unsaturated resins will place more emphasis on environmental protection and sustainable development. On one hand, reducing the use of volatile organic compounds to minimize the impact on the environment and human health; on the other hand, developing biodegradable or recyclable resin products to achieve the recycling of resources. Furthermore, with the popularity of 3D printing technology, demand for high-performance, multifunctional modified unsaturated resins will continue to grow.
as an important polymeric material, the study of the components and characteristics of modified unsaturated resins provides a theoretical basis for material innovation. In the future, with continuous scientific and technological advancements, modified unsaturated resins will demonstrate broader application prospects in more fields, making greater contributions to the development of human society.
