-
-
-
-
Recruitment
-
Contact
Coupling agent: the key to connecting inorganic and organic bridges and improving the performance of composite materials
Release Date:
2024-06-24
As an important additive, coupling agent plays an indispensable role in polymer materials. It is like a bridge, effectively connecting inorganic and organic components, bringing more excellent performance for composite materials. Through the introduction of coupling agent, the interface interaction between inorganic filler and organic matrix can be enhanced, thus improving the mechanical properties, thermal stability and weather resistance of the composites.
Type of coupling agent:
There are many kinds of coupling agents. According to the chemical structure and composition of coupling agents, they are divided into four categories: titanate coupling agents, silane coupling agents, aluminate coupling agents, and organic titanium complexes.
titanate coupling agent:
Mainly used to deal with calcium, barium and other inorganic fillers. Can be divided into single alkoxy fatty acids, single alkoxy pyrophosphate esters, chelating, coordination, etc. According to their unique molecular structure, titanate coupling agents include four basic types:
1Chelating type: due to their very good hydrolytic stability, these coupling agents are particularly suitable for aqueous polymer systems;
2. coordination type This kind of coupling agent used in a variety of resin-based or rubber-based composite material system has a good coupling effect, it overcomes the general titanate coupling agent used in resin-based composite material system shortcomings.
3. Single alkoxy type: suitable for filling systems containing no free water, only chemically bonded water or physical water;
4• Monoalkoxy pyrophosphate type: suitable for filler systems with high moisture content.
silane coupling agent:
Silane coupling agents are widely used in engineering plastics and adhesives, and are mainly used as surface treatment agents for silicon-containing inorganic fillers. It can be classified as vinyl silane, methacryloxy silane, epoxy silane, mercapto silane, amino silane, ureido silane, amido silane, aminocarboxylate silane, aminopropyl silane, aryl silane, cationic silane, etc.
aluminate coupling agent:
Aluminate coupling agent is a new type of coupling agent developed independently in China. The structure is aluminum atom as the center, with hydrolysis group and other organic groups, and the structure is similar to titanate coupling agent.
organic titanium complex:
The organic titanium complex can not only promote the adhesion between different substances, but also improve the performance of the composite system.
Industry application of coupling agent:
The purpose of the coupling agent is to make inorganic materials and organic materials better together.
Filler surface treatment: in the resin to improve the compatibility of filler and resin, wettability, dispersion.
Coupling agent used in the adhesive and coating industry: can improve the wet adhesion, weather resistance, improve pigment dispersion, improve wear resistance and resin crosslinking.
Coupling agent is applied to rubber and plastic products: to improve the mechanical strength, wear resistance, wet electrical properties and rheological properties of the products.
In order to meet the diverse needs of different fields, coupling agent products have a variety of models and specifications to choose from. Our professional team can provide customers with the most suitable coupling agent products according to their specific needs and application scenarios. Whether it is to improve the mechanical properties of composite materials, or to enhance the practical value and performance of products such as rubber, coatings, inks and plastics, we can provide effective technical support and solutions.
Related News
Hotline:
Mobile:
Address:
Room 4417, Huali Building, 67 Zhujiang Road, Xuanwu District, Nanjing
The company adheres to the business philosophy of "sincere and trustworthy, customer service, and win-win development". The products have won the trust of customers with excellent quality, sold throughout the country, and exported to Southeast Asia and European countries.
