1、Preparation and Thermal Decomposition Kinetics of Novel Silane Coupling
Through DSC, the thermal decomposition kinetics of a thiohydrazide-iminopropyltriethoxysilane coupling agent was investigated, including thermal stability, decomposition constants (Kd), and activation energy (Ea), and then the equation of thermal decomposition kinetics was obtained.
2、Influences of surface modification of nano
Influences of the content of modified nano-SiO 2 on the thermal and frictional properties of cyanate ester are investigated. Mechanism of surface modification of nano-SiO 2 by KH-560 and SEA-171 is discussed.
3、Decomposition Time of Silane Coupling Agents
This article explores the decomposition time of silane coupling agents and its influencing factors, aiming to provide theoretical support and practical guidance for their application.
4、Structures of silane coupling agents used
In the surface treated inorganic particles with silane coupling agent (SCA), chemisorbed and physisorbed molecules are present in the treated layer. Increasing the amount of chemisorption by...
Preparation and Thermal Decomposition Kinetics of Novel Silane Coupling
Using carbon disulfide and 3-aminopropyltriethoxysilane as raw materials, a novel silane coupling agent with a terminal group was synthesized for the first time.
Effect of Different Silane Coupling Agents on Properties of Waste
The effects of different silane coupling agents on the microstructure, mechanical properties, thermal decomposition, and crystallization properties of the composites were studied.
The modification mechanisms of silane coupling agent (SCA) on the
In the study, a novel thermosetting polyurethane asphalt binder (PUAB) modified by silane coupling agent (SCA) was prepared. The modification mechanism of SCA was analyzed, and physical performance of PUAB was evaluated by laboratory experiments.
Preparation and Thermal Decomposition Kinetics of Novel
Using carbon disulfide and 3-aminopropyltriethoxysilane as raw materials, a novel silane coupling agent with a terminal group was synthesized for the first time.
Preparation and thermal properties of silane coupling agent
Bisphenol A diether dianhydride (BPADA) was used as the starting material to react with allylamine to synthesize the imide ring-containing compound BPADA-AA,and then BPADA-AA was reacted with triethoxysilane by silico addition reaction to prepare a new imide ring-containing silane coupling agent BPADA-AA-TES.The structure of the new ...
The influences of silane coupling agents on the heat and moisture
In this work, the interface, mechanical, and electrical properties of basalt fibre composites treated with three coupling agents via damp‐heat ageing were compared. Molecular simulations were conducted to reveal the damp‐heat ageing mechanism of the composites.
Silane coupling agents, as critical organosilane compounds, are widely utilized in electronics, automotive, construction, and other fields. They form stable network structures through intermolecular chemical bonds, endowing materials with exceptional properties. their thermal stability and decomposition characteristics under high-temperature conditions remain a research focus. This paper explores the thermal decomposition behavior of silane coupling agents to provide scientific insights for applications in related domains.
I. Structure and Properties of Silane Coupling Agents
Silane coupling agents typically consist of a silicon atom bonded to an organic hydrocarbon chain, a structure that determines their unique physical and chemical properties. These include excellent heat resistance, adhesive strength, weatherability, and aging resistance. By forming a thin protective layer on substrate surfaces, they effectively prevent interfacial adhesion failure while enhancing mechanical strength and wear resistance.
II. Mechanism of Thermal Decomposition of Silane Coupling Agents
The thermal decomposition of silane coupling agents is a complex chemical reaction involving the cleavage and rearrangement of Si-C bonds. During heating, an initial rapid weight loss stage occurs due to the breakdown of unstable chemical bonds between silicon and hydrocarbon groups. Subsequently, the remaining silicon and hydrocarbon moieties gradually lose activity, reducing the overall thermal stability of the molecules.
III. Factors Affecting Thermal Decomposition
Thermal decomposition behavior is influenced by multiple factors, including temperature, duration, and environmental atmosphere. Temperature is a primary driver: higher temperatures accelerate decomposition rates and increase the variety and quantity of degradation products. Additionally, ambient gases significantly impact the process. For instance, oxygen promotes oxidative decomposition, while nitrogen inhibits it.
IV. Impact of Thermal Decomposition on Material Performance
Thermal decomposition of silane coupling agents not only alters their own properties but also affects composite materials. In composites, decomposition may reduce interfacial adhesion or induce cracking. Degradation products, such as silicates, can clog pores, compromising mechanical performance. Understanding these effects is crucial for optimizing material design.
V. Application Prospects of Thermal Decomposition Research
With rising demands for material performance, studying silane coupling agent decomposition has gained prominence. By elucidating decomposition mechanisms, novel materials with enhanced properties can be developed. Controlling decomposition behavior also improves composite quality, addressing diverse application needs.
Thermal decomposition of silane coupling agents is a multifactor-driven process involving molecular structural disruption and new bond formation. Understanding this behavior and its impact on materials is vital for optimizing designs and improving performance. Future research should further explore decomposition mechanisms and develop advanced silane coupling agents to meet evolving material demands.
