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ELASTOSIL® CAT UV

Organometallic catalyst for addition-curing two-part silicone rubber grades (RTV-2).


免责声明

所提供之所有信息均基于我们当前所掌握的知识。尽管如此,我们不对其作任何担保、也不承担任何责任,并且保留在任何时候进行技术变更的权利。购买方应在预测试中对所提供之信息以及产品在既定应用中的适应性进行检查。任何时候都必须以合同条款与条件为准。此外,本免责申明还适用于与第三方权利有关之事宜,尤其是在德国境外。

ELASTOSIL® CAT UV is a suitable catalyst component for addition-curing silicone elastomers SEMICOSIL® UV  enabling fast UV curing at room temperature in combination with long pot-life.

 

The correct mixing ratio of addition curing silicone component SEMICOSIL® UV  and ELASTOSIL® CAT UV  (typically 10:1) is given in the datasheet of the addition-curing silicone elastomer.
 

ELASTOSIL® CAT UV is intended to be used only for processing in dispensing equipment configurations with direct mixing of SEMICOSIL® UV  and ELASTOSIL® CAT UV in the mixing tube (.i.e. after the dispensing head). It is not intended to be applied in premixes that are stored in separate reservoirs or distribution systems.

 

 

Surface preparation


All surfaces must be clean and free of contaminants that will inhibit the cure of the 10:1 mixture of SEMICOSIL® UV  / ELASTOSIL® CAT UV. 

Examples of inhibiting contaminants are sulfur containing materials, plasticizers, urethanes, amine containing materials and organometallic compounds – especially organotin compounds. If a substrate’s ability to inhibit cure is unknown, a small scale test should be run to determine compatibility.

 

 

Handling

 

ELASTOSIL® CAT UV is supplied in specific packagings allowing the material transfer to reservoirs of state-of-the art dispensing equipment without exposure to ambient light. For this purpose a reusable opening fixture is mounted on the can closure Informations can be provided by the regional sales managers.

 

To ensure homogenity of the corresponding A component (addition curing silicone SEMICOSIL® UV ) must be stirred thoroughly before processing. Typically also ELASTOSIL® CAT UV is stirred in the reservoir of the dispensing machine. Disscolved air is removed by standard degassing of reservoir contents.

 

After exposure to ambient light or daylight ELASTOSIL® CAT UV should be immediately processed and not stored any longer.

 

 

Mixing

 

ELASTOSIL® CAT UV  contains the organometallic UV active catalyst,  the corresponding components A the crosslinker. Even traces of the  catalyst may cause gelling of the component containing the crosslinker. Therefore tools (spatula, stirrers, etc.) used for handling the catalyst-containing component or the catalyzed compound must not come into contact with this component.

SEMICOSIL® UV grades  should be  thoroughly mixed with ELASTOSIL®  CAT UV at a  10 : 1 ratio  by weight or volume. Typically static mixing with tube configurations 24/6 or higher (increased no. helical turnings or lower diameter) are sufficient.

 

To eliminate any air introduced during dispensing or trapped under components or devices a subsequent vacuum encapsulation may be recommended.

 

 

Curing

 

UV Irradition on ELASTOSIL® CAT UV activates the UV-active catalyst. In combination with SEMICOSIL® UV grades a very fast cure can be achieved. Cure speed can be tuned in typical ranges between  minutes and  < 10 sec depending on UV Intensity and dose.

Reaction proceeds after end of UV irradition. Cure is achieved for those areas irradiated with UV light. In case shadow cure is required a suitable alternative catalyst can be used.

 

For the curing an UV lamp (Fe-lamp, D-bulb) with an emission between 250 and 350 nm can be used. It is recommended not to use lamp systems that emit light with wavelengths below 250 nm. An high power UV-LED may also be used (365 nm) for applications allowing minimum distance to the light source. As light penetration depth is reduced  365 nm in UV-LED in comparison with discharge lamp pretests are recommendable to check feasibility for specific application.

Curing time of SEMICOSIL® UV  / ELASTOSIL® CAT UV  (10:1) is highly dependent on UV-activation. Significant differences in curing time are obtained for curing different layer thicknesses and for using different substrate materials.

 

 

 

 

 

ELASTOSIL® CAT UV is a suitable catalyst component for addition-curing silicone elastomers SEMICOSIL® UV  enabling fast UV curing at room temperature in combination with long pot-life.

The correct mixing ratio of addition curing silicone component SEMICOSIL® UV  and ELASTOSIL® CAT UV  (typically 10:1) is given in the datasheet of the addition-curing silicone elastomer.

ELASTOSIL® CAT UV is intended to be used only for processing in dispensing equipment configurations with direct mixing of SEMICOSIL® UV  and ELASTOSIL® CAT UV in the mixing tube (.i.e. after the dispensing head). It is not intended to be applied in premixes that are stored in separate reservoirs or distribution systems.

 

Surface preparation


All surfaces must be clean and free of contaminants that will inhibit the cure of the 10:1 mixture of SEMICOSIL® UV  / ELASTOSIL® CAT UV. 

Examples of inhibiting contaminants are sulfur containing materials, plasticizers, urethanes, amine containing materials and organometallic compounds – especially organotin compounds. If a substrate’s ability to inhibit cure is unknown, a small scale test should be run to determine compatibility.

Handling

 

ELASTOSIL® CAT UV is supplied in specific packagings allowing the material transfer to reservoirs of state-of-the art dispensing equipment without exposure to ambient light. For this purpose a reusable opening fixture is mounted on the can closure Informations can be provided by the regional sales managers.

To ensure homogenity of the corresponding A component, usually the addition curing silicone SEMICOSIL® UV  must be stirred thoroughly before processing. Typically also ELASTOSIL® CAT UV is stirred in the reservoir of the dispensing machine. Disscolved air is removed by standard degassing of reservoir contents.

After exposure to ambient light or daylight ELASTOSIL® CAT UV should be immediately processed and not stored any longer.

Mixing

 

ELASTOSIL® CAT UV  contains the organometallic UV active catalyst,  the corresponding components A the crosslinker. Even traces of the  catalyst may cause gelling of the component containing the crosslinker. Therefore tools (spatula, stirrers, etc.) used for handling the catalyst-containing component or the catalyzed compound must not come into contact with this component.

SEMICOSIL® UV grades  should be  thoroughly mixed with ELASTOSIL®  CAT UV at a  10 : 1 ratio  by weight or volume. Typically static mixing with tube configurations 24/6 or higher (increased no. helical turnings or lower diameter) are sufficient.

To eliminate any air introduced during dispensing or trapped under components or devices a subsequent vacuum encapsulation may be recommended.

 

Curing

UV Irradition on ELASTOSIL® CAT UV activates the UV-active catalyst. In combination with SEMICOSIL® UV grades a very fast cure can be achieved. Cure speed can be tuned in typical ranges between  minutes and  < 10 sec depending on UV Intensity and dose.

Reaction proceeds after end of UV irradition. Cure is achieved for those areas irradiated with UV light. In case shadow cure is required a suitable alternative catalyst can be used.

For the curing an UV lamp (Fe-lamp, D-bulb) with an emission between 250 and 350 nm can be used. It is recommended not to use lamp systems that emit light with wavelengths below 250 nm. An high power UV-LED may also be used (365 nm) for applications allowing minimum distance to the light source. As light penetration depth is reduced  365 nm in UV-LED in comparison with discharge lamp pretests are recommendable to check feasibility for specific application.

Curing time of SEMICOSIL® UV  / ELASTOSIL® CAT UV  (10:1) is highly dependent on UV-activation. Significant differences in curing time are obtained for curing different layer thicknesses and for using different substrate materials.

储存

The 'Best use before end' date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons. After exposure to daylight or UV-light ELASTOSIL® CAT UV should be immediately processed and not stored any longer.

销售和支持

Wacker Chemicals (China) Co.,Ltd.
Caohejing Hi-Tech Park
200233 Shanghai
中国
+86  21  6130-2000 (电话)
+86 21 6130-2500  (传真)
Contact Sales
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