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SE871 TUFEL |
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High Tear Strength, Translucent
Silicone Rubber Compounds
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SE851/SE852 and SE871 are two
component addition curable silicone rubber compounds that offer high tear
strength and translucency in 50 and 70 durometers respectively. The high tear strength and resilience of SE851/SE 852 and
SE871 TUFEL silicone rubber compounds are desirable characteristics for
tubing, catheters and components of medical devices. SE851/SE852 and SE871
TUFEL silicone rubber compounds must not be used for permanent implant
applications. SE851 and SE871 can be used in incidental food contact where
FDA regulations apply. |
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TYPICAL PRODUCT
DATA Characteristics of Uncured TUFEL Silicone Rubber Compounds
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FOOD USE STATUS
SE851 and SE871 silicone rubber compounds can be used in incidental food contact where FDA regulations apply. It is necessary that a minimum of 2 hours at 177C(350F) post cure be applied to all articles intended for food contact. It is the responsibility of the manufacturer of the finished articles to insure that the performance standards specified in the regulations are met. SE852 cannot be used in incidental food contact where FDA regulations apply. The following typical data exhibits the cure profile of each of the bases with CA-2 and CA-4 curing agents..
Rheological Profile - Monsanto ODR Rheometer, 3°arc @ 177C (350F)
Typical Properties of Cured Compounds The following properties were obtained on compression molded 0.075 inch ASTM sheets of SE851/SE852 and SE871 TUFEL silicone rubber compounds catalyzed as indicated.
Press Cure - 10 min. @ 177C (350F)
Post Cure - 2 hrs. @ 177C (350F)
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The TUFEL compounding
system consists of silicone rubber bases (SE851, SE852, and SE871) and
platinum curing catalysts (CA-2 and CA-4). These systems are designed to
be blended using a 99:1 ratio of base to catalyst. The recommended mixing
procedure is to pre-freshen the catalyst on a cool, clean two roll mill
and then remove the freshened catalyst from the mill. The base compound
should then be freshened on the mill by itself, and the prefreshened
catalyst then added to it. Cross-blending a minimum of eight times ensures
a uniform mix.
Additional fillers, process aids and pigments can be added to TUFEL but may cause cure variation or inhibition, so it is important to pre-evaluate any additive to ensure compatability with the TUFEL system. Sulfur or amine containing additives will inhibit the cure, so it is essential to maintain an environment free from these materials when working with TUFEL silicone rubber. Curing Agents Each TUFEL grade is packaged with the base grade and CA catalyst most
closely associated with the intended enduse application. CA-2 is the
faster curing catalyst and most appropriate for extrusion and calendering.
CA-4 is the slower curing catalyst and most appropriate for molding
applications where scorch safety is required. Both SE851 and SE871 are
packaged with CA-2 catalyst, while SE852 is packaged with CA-4
catalyst.
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Material Safety Data
Sheets are available upon request from Momentive Performance Materials. Similar information
for solvents and other chemicals used with Momentive Performance Materials products should be obtained
from your suppliers. When solvents are used, proper safety precautions
must be observed. |
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The warranty period is 3
months from date of shipment from Momentive Performance Materials if stored in the original
unopened container at 35C(95F). For optimum results, the CA-2 and CA-4
curing catalysts should be stored in a freezer prior to use.
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SE 851/SE 852 and SE 871
may be ordered from Momentive Performance Materials, Waterford, NY 12188, the Momentive Performance Materials
sales office nearest you, or where appropriate, an authorized Momentive Performance Materials
product distributor. |
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Prior to considering use
of a Momentive Performance Materials' product in fulfilling any government requirement,
please contact the Government and Trade Compliance office at 413-448-4624.
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| LEGAL DISCLAIMER THE MATERIALS, PRODUCTS AND SERVICES OF MOMENTIVE PERFORMANCE MATERIALS, THEIR SUBSIDIARIES OR AFFILIATES (THE "SUPPLIER"), ARE SOLD SUBJECT TO THE SUPPLIER’S STANDARD CONDITIONS OF SALE, WHICH ARE INCLUDED IN APPLICABLE SALES AGREEMENTS, PRINTED ON THE BACK OF ACKNOWLEDGMENTS AND INVOICES, OR AVAILABLE UPON REQUEST. ALTHOUGH THE INFORMATION, RECOMMENDATIONS OR ADVICE CONTAINED HEREIN IS GIVEN IN GOOD FAITH, SUPPLIER MAKES NO WARRANTY OR GUARANTEE, EXPRESS OR IMPLIED, (I) THAT THE RESULTS DESCRIBED HEREIN WILL BE OBTAINED UNDER END-USE CONDITIONS, OR (II) AS TO THE EFFECTIVENESS OR SAFETY OF ANY DESIGN INCORPORATING SUPPLIER’S MATERIALS, PRODUCTS, SERVICES, RECOMMENDATIONS OR ADVICE. NOTHING IN THIS OR ANY OTHER DOCUMENT SHALL ALTER, VARY, SUPERSEDE OR OPERATE AS A WAIVER OF ANY OF THE SUPPLIER’S STANDARD CONDITIONS OF SALE. Each user bears the full responsibility for making its own determination as to the suitability of Supplier’s materials, products, services, recommendations or advice for its own particular purpose. Each user must identify and perform tests and analyses sufficient to assure it that its finished parts will be safe and suitable for use under end-use conditions. Because actual use of products by the user is beyond the control of Supplier, such use is within the exclusive responsibility of the user, and Supplier cannot be held responsible for any loss incurred through incorrect or faulty use of the products. Further, no statement contained herein concerning a possible or suggested use of any material, product, service or design is intended or should be construed to grant any license under any patent or other intellectual property right of Supplier or any of its subsidiaries or affiliated companies, or as a recommendation for the use of such material, product, service or design in the infringement of any patent or other intellectual property right. |