1、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.
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、Subcritical Water
The decomposition of CF 3 CH 2 CH 2 Si (OMe) 3 and C 4 F 9 CH 2 CH 2 Si (OMe) 3 ─typical fluorinated silane coupling agents used for surface modification─was investigated in subcritical water for potential waste treatment applications.
The Decomposition of Silane Coupling Agents
4、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.
Recent Progress in Silane Coupling Agent with Its Emerging Applications
The effects of a silane coupling agent such as (N - (nbutyl) 23-aminopropyltrimethoxy silane) on old corrugated container (OCC) fibers, as a recyclable material, were studied on the ultimate strength of the prepared OCC fibers/high density polyethylene composites.
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.
Preparation and Thermal Decomposition Kinetics of Novel
Secondly, using the nonisothermal decomposition method, the thermal stability and thermal decomposition enthalpy of a thiohydrazide-iminopropyltriethoxysilane coupling agent were measured by a differential scanning calorimeter (DSC).
Silane Coupling Agents
Application of silane coupling agents to thermoplastic resin-based fiber-reinforced materials is also actively performed along with the efforts to develop a silane coupling agent having further enhanced coupling effects.
Preparation and Thermal Decomposition Kinetics of Novel Silane Coupling
the thermal decomposition kinetics of a thiohydrazide-iminopropyltriethoxysilane coupling agent was investigated, including thermal stability, decomposition constants (K d), and activation energy (E a), and then the equation of thermal decomposition kinetics was obtained.
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.
In modern industry, silane coupling agents, as a novel type of polymer material treatment agent, have attracted attention due to their unique chemical properties and broad application prospects. Silane coupling agents, also known as silane modifiers or silane cross-linking agents, are organosilicon compounds containing siloxane bonds (Si-O-Si). They exhibit excellent surface activity, resistance to high and low temperatures, weatherability, and adhesive properties. These agents are commonly used to improve the processing performance of polymer materials, enhance mechanical strength, and increase durability. This article will elaborate on the composition and structure, mechanism of action, application range, and environmental concerns of silane coupling agents.
1. Composition and Structure of Silane Coupling Agents
Silane coupling agents primarily consist of three components: the silane group, an organic functional group, and a potential capping group. The silane group is the core of the agent, reacting with hydroxyl or carboxyl groups on polymer surfaces to form chemical bonds, thereby modifying the polymer. The organic functional group imparts specific properties to the agent, such as hydrophobicity, oleophilicity, or hydrophilicity, to suit different application scenarios. The capping group prevents self-polymerization or reactions with other monomers during polymerization, ensuring stability and functionality.
2. Mechanism of Action
The mechanism of silane coupling agents primarily relies on interactions between the silane group and the polymer surface. When the agent contacts a polymer, the silane group rapidly diffuses to the polymer surface and chemically reacts with functional groups like hydroxyls or carboxyls, forming stable bonds. This bonding enables the agent to firmly adhere to the polymer surface, enhancing interfacial adhesion and mechanical strength.
3. Application Range
Due to their unique properties, silane coupling agents are widely used in various fields. In the plastics industry, they significantly improve tensile strength, impact resistance, and wear resistance while maintaining transparency and flexibility. In coatings, they enhance adhesion, water resistance, and weatherability, prolonging the lifespan of coatings. In rubber products, they boost aging resistance and heat resistance, extending product longevity. Additionally, silane coupling agents are employed in textiles, paper, metals, and other surface treatments to improve functionality and durability.
4. Environmental Concerns
With growing environmental awareness, the ecological impact of silane coupling agents has gained attention. Their use may generate toxic substances, such as volatile organic compounds (VOCs), which can harm the environment and human health if mismanaged. developing low-toxicity or non-toxic silane coupling agents and reducing environmental pollution represent critical directions for future advancement.
As highly efficient polymer treatment agents, silane coupling agents hold immense potential in industrial applications. Through in-depth research on their composition, mechanisms, applications, and environmental implications, their advantages can be better leveraged to drive innovation across sectors. In the future, advancements in technology and stricter environmental standards will likely usher in even broader prospects for silane coupling agents.
