1、(PDF) Recent Progress in Silane Coupling Agent with Its Emerging

This paper presents the effects of silane coupling agent, which includes interfacial adhesive strength, water treatment, polymer composites and coatings that make it valuable for...

2、硅烷偶联剂的种类与结构对二氧化硅表面聚合物接枝改性的影响

收起 Based on the study of the process of polymer grafting modification on the surface of ultrafine silicon dioxide and compared by using TEM, IR, XPS, and model calculation, the influence and mechanism of different silane coupling agents on the modification of ultrafine sil...

3、Effects of functionalization and silane modification of hexagonal boron

In this work, h-BN nanoparticles were surface modified using vinyltrimethoxysilane (VTMS) at different concentrations. Before silane modification, h-BN nanoparticles were hydroxylated using...

4、Surface Modification of Viscose Fabric with Silane Coupling Agents ‐ An

The effects of chemically treating viscose fibres with silane coupling agents was investigated to enhance their physicochemical properties including tensile properties, moisture absorption, wrinkle recovery, water repellency, and thermal stability.

Influences of surface modification of nano

Abstract The surface of nano-silicon dioxide (nano-SiO2) particles was modified by small molecular coupling agent KH-560 and macromolecular coupling agent SEA-171, respectively, to change the surface activity and structure.

Surface Modification of Nano

The surface modification of nano-silica materials as pesticide carrier was realized with silane coupling agent KH-570 for the improvement of dispersivity and hydrophobicity.

Interfacial modification of silica surfaces through γ

Abstract The development of robust, cost-effective methods to modify surfaces and interfaces without the specialized synthesis of unique coupling agents could provide readily accessible routes to optimize and tailor interfacial properties. We demonstrate that γ-isocyanatopropyl triethoxysilane (ISO) provides a convenient route to functionalize silica surfaces through coupling reactions with ...

Surface Modification of Nano

Surface modification of nanoSiO2 was carried out in ethanol solution with two different silane coupling agents, 3-aminopropyltriethoxysilane (KH-550) and...

Surface Modification of Nano

Analysis of nanoparticle size and TEM revealed that the modified nano-Si 3 N 4 possessed good dispersibility and the average diameter was less than 100 nm. In this work, a silane coupling agent was used for surface modification of native nano-sized silicon nitride (Si3N4) powder.

Xu, Min Hong, Cao, Yong Yong, Gao, Shun Guo (2014) Surface Modification

Chuayplod, Patcharaporn, Aht-Ong, Duangdao (2018) Mechanochemical Assisted Modification of Parawood Microcrystalline Cellulose Using Silane Coupling Agent and their Composites Properties.

Preparation and Application Research on N990 Modified by Silane Coupling Agents

Abstract: This study focuses on the preparation process and performance analysis of N990 modified by silane coupling agents. Through experimental optimization, the most suitable type and dosage of silane coupling agent, as well as modification process parameters, were determined. The research explored its potential applications in various fields. Results indicate that silane coupling agents effectively enhance the properties of N990, expanding its application value in aerospace, automotive manufacturing, and other industries.

Keywords: Silane coupling agent; N990; Surface modification; Performance enhancement; Application research

1. Introduction

With advancements in technology and industrial development, the demand for high-performance materials has grown rapidly. N990, a high-performance engineering plastic, is widely used in aerospace, automotive, and electronic industries due to its excellent mechanical properties, chemical resistance, and processability. its low surface hardness and susceptibility to wear and scratching limit applications under extreme conditions. Surface modification of N990 to improve wear resistance and scratch resistance has become a research focus. Silane coupling agents, novel surface modifiers with unique chemical structures, have shown promise in enhancing material properties. This study aims to investigate the preparation and performance of silane-modified N990, providing theoretical and technical guidance for practical applications.

2. Preparation of Silane-Modified N990

2.1 Selection of Silane Coupling Agent

Silane coupling agents are organic-inorganic hybrid compounds that react with hydroxyl or amine groups on polymer chains via covalent or hydrogen bonds. Key factors in selection include molecular structure, functional group type, and reactivity. In this study, silane coupling agent A was chosen for its high reactivity and multiple functional groups capable of forming stable chemical bonds with N990.

2.2 Pretreatment of Silane Coupling Agent

To enhance interaction with N990, silane coupling agent A was dissolved in a solvent with a catalyst and refluxed at controlled temperature. Reaction time, temperature, and catalyst type were optimized to ensure full activation for bonding with N990.

2.3 Mixing Silane Coupling Agent with N990

Pretreated silane coupling agent A was uniformly mixed with N990 at a specific ratio. Care was taken to avoid excessive stirring, which could disrupt the crystalline structure of N990.

2.4 Curing of Modified N990

The mixture was cured at a set temperature. Curing conditions (time, temperature) were critical to forming stable chemical bonds without overcuring, which could degrade material properties.

2.5 Post-Treatment

To improve wear and scratch resistance, modified N990 underwent sandpaper polishing to remove surface defects. Optional heat treatment or protective coatings were applied to further optimize performance.

3. Performance Analysis of Silane-Modified N990

3.1 Surface Hardness Test

Scratch tests using a diamond tip under controlled load were conducted. Results showed a significant increase in surface hardness and wear resistance post-modification.

3.2 Wear Resistance Test

Ball milling abrasion tests revealed that modified N990 exhibited lower wear rates at high speeds compared to unmodified samples.

3.3 Scratch Resistance Test

Scratch tests demonstrated improved resistance to surface damage, validating the effectiveness of silane modification.

3.4 Other Property Tests

Thermal stability, electrical insulation, and corrosion resistance of modified N990 met practical requirements.

4. Application Research

4.1 Aerospace Industry

Modified N990 maintained mechanical integrity and dimensional stability at high temperatures, making it suitable for aerospace components requiring lightweight, strength, and wear resistance.

4.2 Automotive Industry

Enhanced wear and scratch resistance, combined with processability, positioned modified N990 as a cost-effective material for automotive parts manufacturing.

4.3 Electronics Manufacturing

Improved electrical properties and environmental adaptability enabled applications in electronic encapsulation and component fabrication.

5. Conclusions and Prospects

Optimized silane coupling agents significantly improved N990’s surface hardness, wear resistance, and scratch resistance. The modified material demonstrated broad applicability in aerospace, automotive, and electronics sectors.

5.2 Prospects

Challenges remain in enhancing bonding strength, reducing modification costs, and scaling up production. Long-term reliability and safety assessments are needed. Future research should address these gaps to enable wider adoption of silane-modified N990.