1、An epoxy
Inspired by animal cartilage tissue, an epoxy modified polyurethane composite coating (FD-EPU) with reproducible self-healing properties was successfully prepared.
2、羟基硅油增强反应性聚氨酯涂层的制备及其性能
A series of solvent-free polyurethane coatings were synthesized by partially replacing castor oil with PDMS, and the effects of PDMS content on the mechanical and thermal properties, low-temperature resistance, hydrophobicity, and feel of the coatings were investigated.
3、Preparation and Properties of Novel Modified Waterborne Polyurethane
In this paper, combining the advantages of epoxy acrylate and waterborne polyurethane, a series of novel modified waterborne polyurethane acrylate resins for plastic coatings were designed and investigated.
4、Influence of the structures of silane‐modified polyurethanes on the
To improve the strength and toughness of epoxy resins and their composites, a series of silane-modified polyurethanes (SM-PUs) was synthesized. The SM-PUs were then incorporated into the epoxy resin system to prepare silane-modified polyurethane toughened epoxy resins and their composites.
5、Oil modified and waterborne polyurethane resin
Air-dried water-dispersed polyurethane resins were produced from poly (propylene-ethylene) copolymer triol, monoglyceride, toluene diisocyanate, and tartaric acid.
Preparation and performance study of carbodiimide
The core of the experiments conducted in the present study is an in-depth comparison of the independently prepared modified polyurethane acrylic resin coating (PCUA) with the traditional PUA coating, aiming to demonstrate significant performance enhancement in the modified PCUA composite coating.
Adhesion and tribological characteristics of modified polyurethane
The analysis of coating was performed using gloss, contact angle, FTIR, TGA, tensile test and SEM. The bonding strength between coating and substrate was evaluated by cross-hatch cut, 180 deg peel strength and pull-off adhesion tests.
Research progress on polyurethane
The polyurethane modification mechanism and the effect of curing agent on the properties of polyurethane-modified epoxy resins are discussed. Polyurethane-modified epoxy resins show potential to combine the strengths of both polyurethanes and epoxy resins for advanced pavement repair materials.
Oil Modified and Waterborne Polyurethane Resin
hydrophobic properties at the de-sired level. The alkyd resins may also be made water-reducible by mixing a nor-mally synthesized resin with a pecial alkyd that contains high acidic groups. This second alkyd can be prepared by reacting the resin with an anhydride of high functionality, such as trim
Structure
In detail, we have discussed pertinent research studies on the synthesis mechanism of silane-terminated PUs and the influencing state parameters. Besides, we also disclosed the relationship between structure of silane modified polyurethanes and its properties.
In modern industrial and construction fields, coatings play an indispensable role. Among them, modified polyurethane resin coatings are widely used due to their excellent performance. They not only exhibit superior chemical resistance, abrasion resistance, weatherability, and color retention but also perform exceptionally well in terms of environmental friendliness. This article delves into the characteristics and applications of modified polyurethane resin coatings.
Modified polyurethane resin coatings are high-performance synthetic resin coatings that improve their physical and chemical properties through the addition of specific modifiers. These modifiers include plasticizers, curing agents, pigment dispersants, etc., which impart diverse functional characteristics to the polyurethane resin coatings.
First, chemical resistance is one of the most significant features of modified polyurethane resin coatings. Due to the presence of numerous polar groups in their molecular structure, polyurethane resin coatings can resist erosion by various chemicals, such as acids, alkalis, salts, etc. This chemical resistance has led to their widespread use in chemical equipment, pipelines, storage tanks, and other fields.
Second, abrasion resistance is also a critical property of modified polyurethane resin coatings. The abundant polar groups in their molecular chains enable the formation of a tough protective film upon friction or impact, effectively preventing surface wear and scratches. This makes modified polyurethane resin coatings widely applicable in areas such as wear-resistant flooring and mechanical components.
Additionally, modified polyurethane resin coatings boast good weatherability and color retention. The polar groups in their molecular structure remain stable under ultraviolet (UV) radiation, protecting the coating from UV damage. Meanwhile, these coatings maintain high gloss and excellent color retention, making them widely used in decorative coatings.
In practical applications, modified polyurethane resin coatings have a broad range of uses. For example, in the automotive manufacturing sector, they are employed for vehicle body coatings, providing excellent corrosion and abrasion resistance; in construction, they serve as exterior wall coatings, offering superior anti-pollution and color retention properties; and in the electronics industry, they are used as anti-corrosion layers for circuit boards, delivering good insulation and chemical resistance.
modified polyurethane resin coatings also have some limitations. Their relatively high cost and potentially inferior performance under extreme environmental conditions must be considered. when selecting coatings, it is essential to comprehensively evaluate the specific application scenario and requirements.
as a high-performance synthetic resin coating, modified polyurethane resin coatings demonstrate outstanding chemical resistance, abrasion resistance, weatherability, and color retention. They have become indispensable materials in industrial and construction fields. With technological advancements and increasing environmental awareness, modified polyurethane resin coatings are poised for broader application and development.
