RTV Silicone Sealant 9239 2600ml

 Technical Overview

Kootai 9239 RTV Silicone is a single-component, room temperature curing adhesive that forms a durable, flexible bond with excellent thermal conductivity and electrical insulation. It is specifically engineered for demanding industrial and electronic applications where performance, safety, and reliability are critical.

Key technical highlights include:

• The adhesive appears as a white, semi-paste that is easy to apply and spreads uniformly over surfaces.
• It skin-forms within 5 to 12 minutes at 25C and 50% relative humidity, making it suitable for fast-paced assembly lines.
• A full cure is achieved in 24 hours, reaching a depth of 23 mm under normal ambient conditions.
• It maintains a solid yet flexible structure with a Shore A hardness of 55 5, offering both rigidity and shock absorption.
• Designed for thermal management, it delivers thermal conductivity of 0.5 W/mK, ensuring effective heat dissipation from sensitive components.
• With a tensile strength of 2.3 MPa, it forms strong mechanical bonds even in vibration-prone environments.
• The material can stretch without cracking, thanks to an elongation at break of 100%.
• For electrical applications, it provides robust insulation with a dielectric strength of 14 kV/mm and a volume resistivity of 3 10 cm.
• It is a low-volatile adhesive, containing less than 2.2% fugitive content, minimizing shrinkage and odor.
• Complies with UL94 flame retardancy, and is certified under RoHS, REACH, and is halogen- and sulfur-free, making it safe for global electronic manufacturing standards.

This technical combination ensures that Kootai 9239 can perform reliably in environments exposed to heat, moisture, dust, and electrical stressmaking it a preferred adhesive for advanced electronics, LED systems, and industrial automation applications.

FAQs

Q1: How long does 9239 RTV Silicone take to cure?

A: Surface curing begins within minutes, and deep curing occurs within 24 hours at 25C and 50% humidity. Full mechanical properties are reached after 7 days.

Q2: Can it be used on plastic surfaces like PP or PE?

A: Yes, but such surfaces require special pretreatment for effective adhesion.

Q3: Is it electrically insulating?

A: Yes, with a dielectric strength of 14 kV/mm and a volume resistivity 310 cm.

Q4: What is the shelf life?

A: 6 months when stored sealed in a cool, dry place (5C28C), though optimal performance is achieved within 4 months.

Q5: Is 9239 considered hazardous for transport?

A: No, it's classified as non-dangerous goods and can be stored and transported as general chemicals.