1、Advances in waterborne polyurethane matting resins: A review

This includes an in-depth examination of WPU self-matting resins, as well as variants like epoxy-modified, silicone-modified, acrylic-modified, other multi-components modified, and bio-based modified WPU self-matting resins.

2、树脂性能及制备工艺对超高分子量聚乙烯纤维/水性聚氨酯复合

关键词: 工艺参数, 超高分子量聚乙烯纤维, 水性聚氨酯, 弹道性能, 复合材料 Abstract: Using waterborne polyurethane as matrix and ultra-high molecular weight polyethylene (UHMWPE) fiber as reinforcement, unidirectional and orthogonal composite soft bulletproof layer was prepared. Based on ballistic penetration test and non-destructive testing, the effects of resin ...

3、A review of recent development in preparation and modification of

To meet the required specifications of WPU, researchers have developed various modification techniques aimed at improving WPU performance. This paper provides an overview of the preparation principles and methods for WPU.

4、Study on the Synthesis and Properties of Waterborne Polyurea Modified

In this study, epoxy-modified waterborne polyurea (WPUAE) emulsions were prepared using epoxy resin as a modifier. Fourier transform infrared spectroscopy (FT-IR) showed that E44 was successfully introduced into the molecular chain of WPUA.

Waterborne Polyurethane Transparent Coatings for Self

In this work, we used thiosulfate groups in polymers as both hydrophilic moieties to disperse and stabilize polyurethane dispersions and as precursors of disulfide bonds that are necessary for self-healing properties of the coating.

Low

The improvement effect of polyurethane on the mechanical properties of waterborne epoxy resin at low temperatures was evaluated. The prediction models of low-temperature mechanical properties of waterborne epoxy resin based on Grey–Markov chain method was established.

Research progress in modification of waterborne polyurethane

In this paper,the research status of the modification of waterborne polyurethane in recent years was reviewed,and the research progress of the modification of waterborne polyurethane with organosilicone/fluorine,acrylic ester,biomass materials,nanomaterials,epoxy resin as raw materials was mainly introduced.The deficiencies of ...

Toughness modification of waterborne epoxy emulsified asphalt by

In order to solve poor performance at low-temperature of w-EA, waterborne polyurethane (w-PU) is used as a toughening agent to modify waterborne epoxy emulsified asphalt (w-PUEA).

Study on Coating Properties of Waterborne Polyurethane Modified Epoxy

The results indicated that the modified epoxy resin with the best toughening effect was prepared by adding 5% waterborne polyurethane with particle size of 50 nm.

Synthesis and properties of castor oil–based cationic waterborne

In this study, polyurethane prepolymers containing branched chains were successfully synthesized by using diphenylmethane diisocyanate (MDI), polytetramethylene ether glycol (PTMG) and castor oil (CO) as the main raw materials.

In the field of modern materials science, with the growing emphasis on environmental protection and the implementation of sustainable development strategies, waterborne polyurethane (WPU) modified resins have gained significant attention due to their unique properties. These materials not only exhibit excellent mechanical performance, chemical resistance, and processability but also hold tremendous potential for environmental conservation. This article provides an in-depth exploration of the definition, composition, performance characteristics, and application fields of waterborne polyurethane modified resins, while offering prospects for their future development trends.

I. Overview of Waterborne Polyurethane Modified Resins

Waterborne polyurethane modified resin is a polyurethane resin using water as a solvent. It achieves dispersion and stability in the aqueous phase by introducing hydrophilic groups or forming hydrophilic segments through copolymerization. Compared to traditional solvent-based polyurethanes, waterborne polyurethane modified resins are characterized by low toxicity, reduced pollution, and high biodegradability, aligning with the principles of green chemistry and environmental sustainability.

II. Composition and Structure

Waterborne polyurethane modified resins primarily consist of polyols, polyisocyanates, chain extenders, crosslinking agents, and water. Among these:

• Polyols serve as the foundational raw material for polyurethane synthesis, typically including diols or triols.
• Polyisocyanates provide the carbamate linkages essential for polymer formation.
• Chain extenders regulate the molecular weight and crosslinking density of the polymer.
• Crosslinking agents create three-dimensional network structures.
• Water acts as the solvent, ensuring optimal solubility and fluidity of the resin.

III. Performance Characteristics

1. Excellent Mechanical Properties: High elastic modulus and tensile strength enable the resin to withstand substantial external forces.
2. Superior Abrasion Resistance: Formulations can be adjusted to produce resins with exceptional wear resistance.
3. Good Weather Resistance: Maintains physical integrity under outdoor conditions, resisting aging and discoloration.
4. Outstanding Adhesion: Exhibits strong bonding capabilities with various substrates, including plastics, metals, and rubber.
5. Adjustable Flexibility: Flexible monomer ratios allow customization of the resin’s flexibility.
6. High Biodegradability: Rapidly decomposes into water and carbon dioxide in natural environments, minimizing ecological impact.

IV. Application Fields

1. Coatings: As a primary film-forming component, waterborne polyurethane modified resins are widely used in automotive, furniture, and architectural coatings.
2. Adhesives: Employed in woodworking, construction, and decoration for their superior bonding properties.
3. Textile Treatment: Enhances fabric durability, water repellency, and antibacterial properties.
4. Sealants: Provides waterproof and dustproof solutions in automotive repair and electronics.
5. Leather Care: Prolongs leather lifespan through protective and restorative treatments.

V. Development Trends

Driven by technological advancements and stricter environmental standards, future trends in waterborne polyurethane modified resins include:

1. High Performance: Incorporating novel functional monomers and optimized formulations to enhance mechanical, wear, and weather resistance, as well as biodegradability.
2. Green and Low-Emission: Developing low-VOC, non-toxic resins to reduce environmental and health risks.
3. Multifunctionalization: Integrting self-cleaning, antimicrobial, UV-resistant, and other advanced properties.
4. Customized Solutions: Tailoring resins to meet specific industry and application needs.
5. Smart Manufacturing: Leveraging advanced technologies to improve production efficiency, product quality, and cost-effectiveness.

As an eco-friendly polymer material, waterborne polyurethane modified resin boasts vast application potential and significant market opportunities. With ongoing technological innovation and tightening environmental regulations, it is poised to play a critical role in advancing green production and sustainable development in the materials science domain.