Tooling & Composites Product Data Sheet Version 05 / 2017 Product Description Biresin® CR80 is a low viscosity epoxy resin system suitable for the production of high performance fibre reinforced composites parts and moulds with thermal properties up to 80°C Application Areas Biresin® CR80 is especially suited to the infusion and injection processes due to its low viscosity range. It can be used in the marine, wind turbine and general industrial composite areas Features / Advantages ■i 4 hardeners (B) give a wide range of processing times ■i Uniform mixing ratio of 100:30 by weight gives even more processing flexibility ■ Fast infusion and good wet-out of fabrics and non-wovens due to low viscosity and good wetting characteristics ■ All systems are Germanischer Lloyd approved. Certificate No. WP 1620019 HH (attached) ■ Particularly good for applications where curing temperatures cannot be >75°C ■ Hardeners (B) Biresin® CH80-1 and CH80-2 can also be used for the manufacture of smaller parts in hand lay-up processing ■ Hardeners (B) Biresin® CH 80-2 and CH 80-6 are also available in blue ■ The material and processing temperatures should be from 18 to 35°C. ■ The mixing ratio must be followed accurately to obtain best results. Deviating from the correct mix ratio will lead to lower performance. ■ The final mechanical and thermal values are dependent on the applied postcuring cycles. n To clean brushes or tools immediately Sika Reinigungsmittel 5 is recommended. ■ Additional information is available in “Processing Instructions for Composite Resins”. BUILDING TRUST

Development of Exotherm of Biresin ® CR80-Resin(A)-Hardener(B)-Mixtures, 100g / RT, insulated Development of Viscosity of Biresin ® CR80-Resin(A)-Hardener(B)-Mixtures, 25°

The suitable cure cycle and the attainable mechanical and thermal values depend on various factors, such as laminate thickness, fibre volume, reactivity of the resin system etc. An appropriate cure cycle could look as follows: ■i Heat-up rate of ca. 0.2°C/Minute until approx. 10°C below the required glass transition temperature (Tg) ■i Followed by a dwell at that temperature of between 2 and 12 hours. ■i Part(s) should then be cooled at ~0.5°C per minute The specific postcure should be adapted to the required technical and economic requirements. ■i With hardeners (B) Biresin® CH80-1 and CH80-2...

Biresin® CR80 resin (A) Biresin® CH80-1 hardener (B) Biresin® CH80-2 hardener (B) Biresin® CH80-2 hardener, blue (B) Biresin® CH80-6 hardener (B) Biresin® CH80-6 hardener, blue (B) Biresin® CH80-10 hardener (B) Storage ■i Minimum shelf life of Biresin® CR80 resin (A) is 24 month and of hardeners (B) Biresin® CH80-1, CH80-2, CH80-6 and CH80-10 is 12 months under room conditions (18 - 25°C), when stored in original unopened containers. ■ After prolonged storage at low temperature, crystallisation of resin (A) may occur. This is easily removed by warming up for a sufficient time at a minimum 60°C....

The material described below complies with the applicable requirements as given in the Rules and Regulations of GL. On this basis the material is approved as Laminating Resin for the construction of components provided that the recommendations for use as specified by the producer are observed. Type Biresin CR80 - Series Description Two Component Epoxy Resin System Producer SIKA Deutschland GmbH Stuttgarter Str. 139 72574 Bad Urach Germany Normative Reference GL Rules for Classification and Construction, II - Material and Welding Technology Part 2 Non-Metallic Materials This document consists...

Limitations Remarks Reference Documents Technical specifications deposited at DNV GL SE, Hamburg, Assessed Documents - Technical Data Sheet - Test Report No. B175/7 issued by IMA Dresden - Quality Control Documents Fields of Application Construction of FRP laminates of components, on condition that the fibre reinforcements comply with the applicable requirements of GL and are compatible to the resin. Approved Variants Epoxy Resin Biresin CR80 with following hardeners: - CH80-1 - CH80-2 - CH80-6 - CH80-10 Any significant changes in design and/or quality of the material will render the approval...