Product

 

 

BLUESIL ESA 7221 A may be stored at temperatures between -5°C / 23°F and 30°C / 86°F for up to 12 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.

BLUESIL ESA 7221 A

​BLUESIL ESA 7221 A&B is a liquid two-component, polyaddition heat curing silicone elastomer.

After polymerization BLUESIL ESA 7221 A&B forms a soft elastic and resistant material.

Protection

2 Part RTV

  • Very high stretchability.
  • Soft.
  • High mechanical performances.
  • Flowable, Low viscosity enabling easy processing.
  • Heat stability.
  • Solvent less: no special precautions required for the workstation environment.
  • Outstanding protection of electronic device against mechanical stress due to temperature variations and vibrations.
  • Long pot life at room temperature.

​BLUESIL ESA 7221 A&B is intended for electronics protection and applications.

Asia Pacific;Central and South America;Europe Middle East Africa;North America

 Characteristics_A

 

 

 Characteristics_B

 

 

 

 

 Table_Characteristics_A_And_B

 

 

hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1Hardness20PairedMixDIN 53505
pot-life_0d649a54-7503-4c7c-a047-9d0c4b3e9f6apot-life_0d649a54-7503-4c7c-a047-9d0c4b3e9f6aPot life52.5PairedMixmin

 

 

 

 

BLUESIL ESA 7221 BBLUESIL ESA 7221 B/our_offer/Product/90061895/90061894/BLUESIL-ESA-7221-B

 

 

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

 

1. Mixing the two components

The components A and B are mixed by weight in the above indicated ratio. The mixing can be carried out either by hand or by using a low-speed electric or pneumatic mixer to minimize the introduction of air and to avoid any temperature increase.

It is also possible to use a special mixing and dispensing machine for the two silicone components. Further information is available upon request.

 

2. Degassing

The mixture should be degassed preferably at 30 to 50 mbar to eliminate any entrapped air. If a dispensing machine is used, the two components are degassed separately prior to mixing.

The silicone mixture expands to 3 to 4 times of its initial volume and bubbles rise to the surface. Wait a few minutes to complete the degassing and then release the vacuum. The silicone is ready for pouring, either by gravity or under low pressure.

Note: Release the vacuum once or twice accelerates the degassing. It is recommended to use a container with a high diameter / height ratio.

 

3. Polymerization

ESA 7221 A&B cures at 23°C. The curing may be slowed down at lower temperature or accelerated by heat.

Contact with certain materials can inhibit the crosslinking. See list below:

- Natural rubbers vulcanized with Sulphur.

- RTV 2 silicone elastomers catalyzed with metal salts, e.g. tin-compounds.

- PVC stabilized with tin salts and additives.

- Epoxy resins catalyzed with amines.

In case of doubts, it is recommended to test the substrate by applying a small quantity of the mixed silicone on a restricted area.

Remix each of the two components (part A and B) every time before using. 1. Mixing the two componentsThe components A and B are mixed by weight in the above indicated ratio. The mixing can be carried out either by hand or by using a low-speed electric or pneumatic mixer to minimize the introduction of air and to avoid any temperature increase.It is also possible to use a special mixing and dispensing machine for the two silicone components. Further information is available upon request. 2. Degassing The mixture should be degassed preferably at 30 to 50 mbar to eliminate any entrapped air. If a dispensing machine is used, the two components are degassed separately prior to mixing. The silicone mixture expands to 3 to 4 times of its initial volume and bubbles rise to the surface. Wait a few minutes to complete the degassing and then release the vacuum. The silicone is ready for pouring, either by gravity or under low pressure. Note Release the vacuum once or twice accelerates the degassing. It is recommended to use a container with a high diameter / height ratio. 3. Polymerization ESA 7221 A&B cures at 23°C. The curing may be slowed down at lower temperature or accelerated by heat. Contact with certain materials can inhibit the crosslinking. See list below - Natural rubbers vulcanized with Sulphur. - RTV 2 silicone elastomers catalyzed with metal salts, e.g. tin-compounds. - PVC stabilized with tin salts and additives. - Epoxy resins catalyzed with amines. In case of doubts, it is recommended to test the substrate by applying a small quantity of the mixed silicone on a restricted area.

 

 

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

 

1. Mixing the two components

The components A and B are mixed by weight in the above indicated ratio. The mixing can be carried out either by hand or by using a low-speed electric or pneumatic mixer to minimize the introduction of air and to avoid any temperature increase.

It is also possible to use a special mixing and dispensing machine for the two silicone components. Further information is available upon request.

 

2. Degassing

The mixture should be degassed preferably at 30 to 50 mbar to eliminate any entrapped air. If a dispensing machine is used, the two components are degassed separately prior to mixing.

The silicone mixture expands to 3 to 4 times of its initial volume and bubbles rise to the surface. Wait a few minutes to complete the degassing and then release the vacuum. The silicone is ready for pouring, either by gravity or under low pressure.

Note: Release the vacuum once or twice accelerates the degassing. It is recommended to use a container with a high diameter / height ratio.

 

3. Polymerization

ESA 7221 A&B cures at 23°C. The curing may be slowed down at lower temperature or accelerated by heat.

Contact with certain materials can inhibit the crosslinking. See list below:

- Natural rubbers vulcanized with Sulphur.

- RTV 2 silicone elastomers catalyzed with metal salts, e.g. tin-compounds.

- PVC stabilized with tin salts and additives.

- Epoxy resins catalyzed with amines.

In case of doubts, it is recommended to test the substrate by applying a small quantity of the mixed silicone on a restricted area.

Remix each of the two components (part A and B) every time before using. 1. Mixing the two componentsThe components A and B are mixed by weight in the above indicated ratio. The mixing can be carried out either by hand or by using a low-speed electric or pneumatic mixer to minimize the introduction of air and to avoid any temperature increase.It is also possible to use a special mixing and dispensing machine for the two silicone components. Further information is available upon request. 2. Degassing The mixture should be degassed preferably at 30 to 50 mbar to eliminate any entrapped air. If a dispensing machine is used, the two components are degassed separately prior to mixing. The silicone mixture expands to 3 to 4 times of its initial volume and bubbles rise to the surface. Wait a few minutes to complete the degassing and then release the vacuum. The silicone is ready for pouring, either by gravity or under low pressure. Note Release the vacuum once or twice accelerates the degassing. It is recommended to use a container with a high diameter / height ratio. 3. Polymerization ESA 7221 A&B cures at 23°C. The curing may be slowed down at lower temperature or accelerated by heat. Contact with certain materials can inhibit the crosslinking. See list below - Natural rubbers vulcanized with Sulphur. - RTV 2 silicone elastomers catalyzed with metal salts, e.g. tin-compounds. - PVC stabilized with tin salts and additives. - Epoxy resins catalyzed with amines. In case of doubts, it is recommended to test the substrate by applying a small quantity of the mixed silicone on a restricted area.

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