At this point the encapsulant will be soft enough to cut or penetrate with a chisel like device and break it away from the embedded component. If the thermal history is eliminated, the shape of the DSC curve becomes more or less ideal. Advanced Search | Structure Search. Glass Transition Temperature °C Remarks Flammability Type of Test Offgassing status Type of Test Temperature Range (Space) Type of Test Outgassing TML, Average % Scotchweld EC 2216 (5 pbw base / 7 pbw accelerator) PRODUCT Scotchweld EC 2216 Safety Data Sheet Product Data Sheet Flexible, two-part, room-temperature-curing epoxy 2-part structural adhesive. 96 0 obj <> endobj Glass transition temperature (Tg) is defined as the temperature at which the mechanical properties of a plastic / adhesive radically changed due to the internal movement of the polymer chains that form the plastic / adhesive. 3M™ Scotch-Weld™ Epoxy Adhesive DP190 Gray is a 1:1 mix ratio similar to Scotch-Weld™ Epoxy Adhesive 2216 B/A Gray and exhibits good peel, shear and environmental aging properties.Information provided by 3M . xref 2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene. Many applications survive below this temperature (factors affecting successful applications include: materials being bonded, dwell at RT before cold exposure and stress below the TG [i.e. 0000004099 00000 n 0000004202 00000 n Toxicity: Polyester resin is highly toxic. Final shear and peel strengths remain similar or even slightly improved compared to the Scotch-Weld epoxy adhesive 2216Translucent. Effects of Chemical Structure on T g • Onset of molecular mobility at T g involves rotation of chain segments (comprised of ~ 10-30 repeat units) about the main chain. Pot Life. Scotch-Weld epoxy adhesive EC-2216 B/A has been labeled, packaged, tested, and certified for aircraft and aerospace applications. 2216 B/A Tan(3M) Long worklife rigid epoxy • 8-12 hrs. x���Ks�6���w�1��d�Id:�ږ�Q;rTK�\|a%�fC*E%q? … Glass transition temperature is 40-300 °C. Formulation remains the same. The 3779 has good electrical properties for potting and wire tacking and carries an important UL 94 V-0 listing meaning it is self-extinguishing. Thermal shock resistance run per 3M test method C-3174. (ECSS-Q-70-02) is recommended. Contact The easiest method to remove epoxy or polyurethane is to heat it above its glass transition (softening point) temperature. This method is more convenient for recovering heavier solid components than reclaiming delicate electronic circuits. Scotchweld EC 2216 (5 pbw base / 7 pbw accelerator) ... , Mechanical, Thermal, Electrical, Optical) Nature. 3M 2216 B/A is a 2 Part Air dry, Base/Accelerator, Epoxy, Modified Amine, Modified Epoxy, Liquid used to Bond Aluminum, Plastic: Epoxy, and Glass. !m�9B���`b$��۸ئO��(�*� �A��>S�N3M>���ߙ�3�0�N�`a�88*|BC�|�a��Oal��[q�~��m],0���{_�(�`T2_u����5x!4a8����#�>�Q+3�t@w�2>eo}�RwD�,�}e�B¤�9ǂ���� 4�)�Q�\C�>NM��93G����H��1�n����W�r|Z]��/FMtImN�Wcn�g+��0� ������rYMa��ϭp�-�²��O����i=ǘ�L���'��q1��`��)�KU�X22$���j�O�=1��]�eR�qv�;� ��]R�P!�����87I�!>0�_��qb��ʔ �� 9)1Ϸ'}���X�ْ �|ۏ>� ��t�l� ��0A �:�vC�(�`��d���6���P) �|~Nˤ_u\,�>K�4б�s�{U���Y���5ڪ�>`WOozP�/_�. GLASS TRANSITION TEMPERATURE (T g) LAP SHEAR STRENGTH (PSI ) MODULUS (PSI) INDEX OF REFRACTION (Nd) SPECTRAL TRANSMISSION POT LIFE (@ room temp) * 301 Two Clear / Colorless 65°C – 1 hour ≥ ≥23°C – 24 hours @ 100 rpm 100– 200 ≥ 65°C >2,000 327,463 1.5190 99% @ 382 – 980nm 97% @ 980 – 1640nm 1-2 hours * 301-2 Two Clear / Colorless 80°C – 3 hours 23°C – 2 days @ 100 … Above 100 °C, there is a peak caused by the polyacrylonitrile. In the low temperature range, DSC can also detect the polybutadiene transition. Tg is normally measured on a Differential Scanning Calorimeter (DSC) piece of whizzy equipment. This kit contains parts A and B. Scotchweld EC 2216 (5 pbw base 7 pbw accelerator) General Information: Flexible, two-part, room-temperature-curing epoxy : Product Type: 2-part structural adhesive: Chemical Composition: Modified Epoxy: Name of Manufacturer: 3M Belgium Hermes Laan, 7, B-1831 Diegem, Belgium +32 (0)2 722 51 11 +32 (0)2 720 02 25 www.3m.com: EXPERIENCE IN PRACTICE; Development Status: Commercial … The glass transition temperature was determined to be about −115 °C. These bonds perform well in shear and resist non polar solvents. Glass Transition Temperature (Tg) by DSC 9 Onset Mid-Point 23°C 29°C Thermal Conductivity 10 (@ 110°F on .250" samples) BTU - ft./ft. g - Glass Transition Temperature for Epoxies 23 Wh at > Glass Transition Temperature (T g) Wh y > T g is an important property of an epoxy, especially critical in product design. handling strength. 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