1、An overview of synthetic modification of nitrile group in polymers and

In this context, the synthetic modifications of nitrile group in polymers into various useful functionalities have received considerable attention and several interesting applications of the resulting polymers have been identified.

2、丁腈橡胶共混改性的研究进展

The latest research progress in modified nitrile rubber at home and broad was reviewed,mainly introducing nitrile rubber blending with other polymers and resins.The other rubber/nitrile rubber blends could improve mechanical properties,thermal properties and oil resista...

3、Polyurethane dispersion/carboxylated nitrile butadiene rubber blends

A latex blend comprising polyurethane dispersion (PUD) and carboxylated nitrile butadiene rubber (XNBR) in an 80:20 ratio was prepared in the presence of epoxide and organo-modified siloxane crosslinkers.

4、POLYURETHANE

Polyurethane (PU)/nitrile rubber (NBR) blends of different compositions were prepared by a combination of solution blending and mastication process. The thermal, mechanical, dynamic mechanical, and morphological properties indicated synergistic behavior of the two components.

Modification of Nitrile Rubbers for High

The present study aims to investigate the effects of nanokaolin (NK) on the tensile and chemical properties of carboxylated nitrile butadiene rubber (NBR)/polyurethane (PU) latex blends.

Blends and Interpenetrating Polymer Networks Based on Polyurethane

A peroxide-curable hydrogenated nitrile rubber (HNBR) was modified by in situ cross-linked polyurethane (PU) in a 1:1 weight ratio by Sebenik et al. [71]. They incorporated carbon black (CB) of different types (N234, N330, and N550) into the prepared HNBR/PU blends.

An Overview of Synthetic Modification of Nitrile Group in Polymers and

In this sce- nario, this present review covers the literatures on the chemical modification of nitrile group in polymers and its major applications especially reported over the last three decades.

Advances in Toughening Modification Methods for Epoxy Resins: A

This work provides a comprehensive review of the recent advancements in the toughening modification methods for epoxy resins.

Progress in modification of nitrile rubber by emulsion co

The progresses in natural rubber and synthetic rubber emulsion co-coagulation methods are introduced, respectively. The prospect of emulsion co-coagulation method is also proposed.

Highly reinforced blends of nitrile butadiene rubber and in

A simplified reactive blending method is investigated to blend effectively the nitrile butadiene rubber (NBR) and in-situ synthesized polyurethane–urea (PUU).

Exploring the Performance and Applications of Polyurethane Resin-Modified Nitrile Rubber

Polyurethane resin, as an important polymer material, is widely used in various fields due to its excellent physical and chemical properties. In recent years, with advancements in technology, the application of polyurethane resin in modifying nitrile rubber has garnered increasing attention. Nitrile rubber is renowned for its exceptional oil resistance, cold resistance, and wear resistance, but certain properties still require improvement. modifying nitrile rubber with polyurethane resin as a novel material holds significant research and practical value.

I. Basic Principles of Polyurethane Resin-Modified Nitrile Rubber

Polyurethane resin is a high-molecular-weight compound containing carbamate groups, characterized by excellent chemical stability, mechanical strength, and processing performance. Through chemical reactions, polyurethane resin can undergo cross-linking with nitrile rubber, forming a new composite material. This composite retains the fundamental properties of nitrile rubber, such as oil resistance, cold resistance, and wear resistance, while introducing polyurethane resin enhances hardness, elasticity, and aging resistance.

II. Performance Characteristics of Polyurethane Resin-Modified Nitrile Rubber

1. High Hardness and Elasticity: The incorporation of polyurethane resin results in higher hardness and elasticity. This enables the material to resist deformation under external forces while maintaining superior recoverability.

2. Excellent Oil Resistance: Polyurethane resin’s outstanding oil resistance ensures that the modified nitrile rubber maintains its performance when exposed to lubricants or solvents. This is critical for equipment and components requiring long-term contact with such substances.

3. Good Cold Resistance: The addition of polyurethane resin allows the modified nitrile rubber to retain its performance in low-temperature environments, which is vital for applications in cold settings.

4. Enhanced Wear Resistance: The introduction of polyurethane resin ensures the material maintains its integrity under friction and wear conditions, making it suitable for long-term operational equipment and components.

5. Improved Aging Resistance: Polyurethane resin enhances resistance to ultraviolet radiation, heat, oxygen, and other aging factors, ensuring durability for materials required in long-term use.

III. Application Areas of Polyurethane Resin-Modified Nitrile Rubber

1. Automotive Manufacturing: Used in automotive tires, seals, bearings, and other components, which maintain performance under harsh operating conditions.

2. Petrochemical Industry: Applied in drilling fluids, blowout preventers, valves, and other critical equipment, ensuring reliability under high-temperature and high-pressure environments.

3. Aerospace: Employed in aircraft engines and aviation components, which perform well under extreme conditions.

4. Construction: Utilized in waterproof membranes, sealants, coatings, and other building materials, maintaining functionality in humid and rainy environments.

As a novel material, polyurethane resin-modified nitrile rubber demonstrates exceptional performance characteristics and broad application prospects. By modifying nitrile rubber with polyurethane resin, hardness, elasticity, oil resistance, cold resistance, wear resistance, and aging resistance are effectively enhanced. With ongoing technological advancements, polyurethane resin-modified nitrile rubber is poised to play an increasingly critical role in future developments.