The Shining Pearl In The Organic Silicone Industry - Room Temperature Vulcanized Silicone Rubber

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1. Basic properties of RTV silicone rubber

RTV silicone rubber, full name room temperature vulcanized silicone rubber, is a type of silicone elastomer that can undergo chemical reactions at room temperature and complete the curing process. Its most notable features are its excellent weather resistance, high and low temperature resistance, good electrical insulation and excellent chemical stability. These properties enable RTV silicone rubber to maintain a stable working state in extreme environments, making it the preferred material in many fields.

The Shining Pearl In The Organic Silicone Industry-Room Temperature Vulcanized Silicone Rubber

Weather resistance

RTV silicone rubber can maintain the stability of its physical and chemical properties over a wide temperature range (-60℃ to +250℃), and is not easy to age, crack, or deform. This feature of RTV silicone rubber makes it particularly suitable for outdoor environments, such as sealing and bonding in building curtain walls, automobile manufacturing, and other fields.

High and low temperature resistance

Low phenyl silicone rubber is known for its excellent low temperature resistance (brittle temperature can reach -120℃), making it an ideal choice for working in low temperature environments. Medium-phenyl and high-phenyl silicone rubbers improve the material's ablation and radiation resistance by increasing the rigidity of the molecular chain, making them suitable for more demanding working environments.

Electrical insulation

RTV silicone rubber has excellent electrical insulation properties, high volume resistivity, and low dielectric loss, which makes it widely used in electronics, aerospace, and other fields for protecting circuits and isolating electromagnetic interference.

Chemical stability

RTV silicone rubber has good resistance to most chemical media (such as acids, alkalis, salts, etc.), and is not easily corroded or dissolved, ensuring its long-term stability in complex and changeable chemical environments.

2. Technical indicators of RTV silicone rubber

Surface drying time

Surface drying time is an important indicator for measuring the curing speed of RTV silicone rubber. It reflects the time it takes for silicone rubber to change from liquid to solid and lose its stickiness on the surface when exposed to the atmospheric environment. A shorter surface drying time means a faster curing speed, which is conducive to improving production efficiency.

Curing depth

Curing depth refers to the thickness of silicone rubber cured from the surface to the inside under specific conditions. This indicator is directly related to the reliability of the sealing or bonding effect. By optimizing the formula and process conditions, the required curing depth can be achieved in different application scenarios.

Extrusion

Extrusion reflects the fluidity and extrusion amount of silicone rubber when it passes through a nozzle or nozzle of a certain caliber under specific pressure and conditions. Good extrusion helps to achieve precise glue application amount control and uniform coating distribution.

Instant sealing pressure

Instant sealing pressure tests the maximum pressure that silicone rubber can withstand when it is closed and air pressure is applied immediately after glue application. This indicator is crucial for evaluating the rapidity and reliability of the sealing effect.

Oil curing characteristics

Oil curing characteristics describe the ability of silicone rubber to cure in an oil medium. This is particularly important for application scenarios involving oil sealing (such as automotive engines, hydraulic systems, etc.).

Shear strength retention rate after air conditioning time

This indicator evaluates the retention of the bonding strength of silicone rubber after it has been placed under specific environmental conditions (such as high temperature and high humidity) for a period of time. A high retention rate means that silicone rubber can still maintain stable bonding performance in harsh environments.

Thermal stability when not cured

Thermal stability when not cured tests the stability of silicone rubber in a high temperature environment. This performance is of great significance to ensure that silicone rubber does not cure prematurely or deteriorate during processing and storage.

3. Application and development of RTV silicone rubber

With the advancement of science and technology and the development of industry, the application field of RTV silicone rubber continues to expand. In the construction industry, it is not only a powerful assistant for sealing glass curtain walls, doors, and windows, but also widely used in waterproof materials, coating additives, and other fields. In the field of automotive electronics, RTV silicone rubber is used to manufacture key components such as sealing gaskets and shock-absorbing elements to ensure the safety and comfort of automobiles. In addition, in the fields of aerospace, new energy, medical equipment, etc., RTV silicone rubber also plays an irreplaceable role.

In the future, with the enhancement of environmental awareness and the popularization of the concept of sustainable development, the RTV silicone rubber industry will pay more attention to green production and technological innovation. By developing silicone rubber products with low VOC (volatile organic compounds) emissions, optimizing production processes, and improving resource utilization, the entire industry will be driven to develop in a more environmentally friendly, efficient, and intelligent direction.

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