Silicone Encapsulants and potting compounds

Name: UL Condensation cure encapsulant and potting compound

Number:

HY-215# UL potting silicone rubber

it is mainly applied for the surface of polycarbonate, PP, ABS, PVC, metal etc., which is suitable for the electronic moisture-proof and waterproof, fixed. It is applicable to sealing bonding coating LED for electronic parts.

Standard Datasheet of HY-215# UL potting silicone rubber

:

Features:

HY-215 is tow-component condensation cure silicone with the characteristics of low viscosity, easy pouring operation, good bonding feature. The safety of potting compound silicone can reach the EU-ROHS requirements fully.

Using instruction of HY-215# UL potting silicone rubber

:

1. First stir the Part A completely before using(to be sure the segiment is evenly mixted) to mixing the Part B as Part A.

2. Mix the Part A and Part B completely according to the mix ratio(10:1by weight) and can be used after deaired

3. this product can be vulcanized at room temperature. After basic curing then go to the next step. Full curing process will be within 24h.The enviromental temperature, especially the humidity, will affect the curing time greatly. Customers should make appropriate adjustments according to local conditions. The mixed silicone should be finished at one time to avoid any waste of material.

Why use Silicone Encapsulants?

Silicone polymers and elastomers have particular inherent physical properties including:

• Wide operating temperature range -115 to 300ºC
• Excellent electrical properties
• Flexibility
• Hardness range: soft gels to moderately hard rubbers
• UV resistance
• Good chemical resistance
• Resistant to humidity and water
• No or low toxicity
• Easy to use

These natural properties can be further enhanced using fillers and chemical additives to provide additional features when needed, including flame retardancy, thermal conductivity, electrical conductivity and adhesion. Through the selection of polymers and fillers it is also possible to adjust viscosity and rheology and the final hardness and modulus of the cured rubber.  Control of the curing regime and speed can be achieved using the silicone chemistry to produce both heat and room temperature cure systems.  Silicones can be supplied as 1 or 2-part systems.  In short, silicone encapsulants are very versatile and provide design engineers with a wide product choice.

Basic Silicone Chemistry

Systems that cure or change from a liquid to a solid cured rubber at room temperature are also referred to as RTV's (Room Temperature Vulcanising).  Silicone encapsulants generally fall into two categories: - condensation cure and addition cure systems.  Understanding the differences between the two systems is important for correct product selection.

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