Description

High transparency liquid optical silicone gel for optical device modules & injection molding

∎Product Description

SI8603 is a high-purity two-component thermosetting silicone material.

∎Typical Applications

• • Designed for manufacturing optical device modules
  • Used for injection molding optical lenses and optical waveguide coupling to reduce scattering losses, resist environmental pollution, moisture, impact, vibration, etc., and can maintain its optical, mechanical and electrical properties for a long time under a wide range of temperature, humidity and harsh environmental conditions.

∎Technical Data Table

Note：Crosslinking by heating does not affect the properties of SI8603 A/B. However, dimensional changes do occur that

should be kept into account

Note：All above data were tested under standardized condition, or tested by further experiments.

∎Key Features

1.Easy processing and curing

2. Middle viscosity, easily mixing as 1:1 by weight or by volume.

3. Excellent transparency
4. High stability to ozone and ultraviolet light
5. High temperature stability
6. High stability and flexibility at low temperatures

7. Outstanding resistance to aging and weathering
8. Low hardness, soft and flexible

∎Packing Specification

• • Part A—5kg/ 10 KG/Bucket
  • Part B—5kg/ 10 KG/ Bucket.

∎Transport &Storage

• When stored at or below 35°C in the original unopened containers, this product has a usable life of 12 months from the date of production.

• Sampling test is necessary for products which exceed shelf life before taking use. During storage may have little settlement stratification, stirring evenly when use, does not affect performance.

It’s non-dangerous goods, can be transported as normal chemicals, CAUTION leakage during transport.

.∎Directions for Use

Remix each of the two components (part A and B) every time before using.

1. Mixing of the two components

Add 100 parts A to 100 parts B.

The two components may be intimately mixed either by hand or using a low-speed electric or pneumatic mixer to minimize the introduction of air into the mixture.

The viscosity of part A and B can be reduce using Maxtech  2300, add 5 to 10% of the quantity of SI8603. This will make no significant change to the mechanical properties after polymerization. Up to 30% of Maxtech 2300 can be added without causing exudation.

2. Degassing

After mixing base and catalyst, it is recommended to eliminate entrapped air.

If the processing is done with the help of a machine both parts are degassed before mixing.

The SI8603 A&B is degassed under a vacuum of 30 to 50 mbar. Under vacuum, the product expands 3 at 4 times its initial volume and forms bubbles on its surface. These bubbles will disappear gradually and the mixture will sink back down to its initial volume. Wait a few minutes to ensure complete degassing and then release the vacuum. The product is ready for use.

Remark:  release the vacuum several times improves the degassing.

For easier degassing only fill a recipient to 1/3 of its height.

The product can be poured by gravity or under pressure. SI8603 A and B is easier to use than normal RTV because the viscosity of the two components Increases relatively slowly.

3. Cross linking

At 23°C, the moulds can be demoulded after 24h. In order to achieve the best possible performance levels from the moulds it is preferable to wait for 24 h before using them.

If accelerated cure is desired, mild heat should be preferred. Conversely at lower temperature polymerization is much slower, at 20°C 36h may be necessary to complete cross-linking.

Be aware that contact with certain materials can inhibit the curing of this RTV:

• Natural rubbers vulcanized with sulphur
• Polycondensation RTV catalysed with metal salts
• PVC stabilizing
• gents Amine cured
• epoxies Sulphur
• containing clays.

In case of doubts, it is recommended to test the substrate by applying a small quantity

of the mixed silicone on a restricted area. Take note that cross contaminates due to improperly cleaned tools or devices are a most frequent cause for inhibition

∎Attention of operation

• Keep away from Children

• Avoid contact with eyes and skin. If contact with your skin, scrub first with soap wateror alcohol, then rinse with water. If contact with your eyes, rinse with plenty of water, andseek medical treatment immediately.

• It is forbidden to build on the surface of the wet substrate.

∎Safety Operation Data

MSDS isn’t included here. Please read TDS, MSDS and label carefully before operation. You can get MSDS from MAXTECH or other distributors, or mail to service center maxtech@shmaxtech.com

∎Warranty and Liability

All product properties and application details based on information believe to be reliable and accurate. But you still need to test its property and safety before application. The advice we supply don’t apply in any circumstances. MAXTECH don’t make assurance of any other applications outside the specification until MAXTECH supply a special written guarantee. MAXTECH is only responsible to replace or refund if this product is defective within the warranty period stated above. MAXTECH makes it clear that will not be liable of any accidents.

∎FAQ

• Q : How long can I get a quote?

  A: The quotation can be provided no longer than 24hours on condition that we know all detailed requirement.

  Q: Do you accept private Label?

  A: Yes.  ODM & OEM are welcome

  Q:Can We get a samle before order?

  A: Of course. Generally, we provide 1-5 pieces free samples for quality testing and the courier fee be born by customers. Thanks for your understanding.

  Q:Do you have MOQ ?

  A: Yes, Generally ,MOQ is1000-2000kg
  Q: How long will finished my order?

  A: It’s depend on your order quantity. Generally, we just need around 10 days to produce 5000kg after receive your
  payment.
  Q: How to find the suitable sealant ?

  A: Please let me know your application purpose,substrate, application method and all your requirements. We would like give you a recommendation.