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Master Bond Inc. has unveiled MasterSil 972TC-LO, a thermally conductive, electrically insulative two-part silicone that meets NASA low outgassing specifications per ASTM E595 specifications.
It is well suited for use in vacuum environments, Master Bond said, as well as applications in the aerospace, electronic, opto-electronic and specialty OEM industries. The MasterSil 972TC-LO offers convenient handling for bonding, sealing, coating and potting. It bonds well to a wide variety of substrates, Master Bond added, including metals, composites, glass, ceramics and rubbers, as well as many types of plastics.
Highly flexible, MasterSil 972TC-LO has an elongation of 40-80 percent, withstands aggressive thermal cycling and resists mechanical shock, the company claimed. This heat dissipative silicone system has a service temperature range of -120°F to +400°F.
This addition cured system does not require air for cross-linking, Master Bond said, and features low shrinkage upon curing even in thick or wide cross sections. MasterSil 972TC-LO has a moderate viscosity of 30,000-40,000 cps with good flow properties and has a one-to-one mix ratio by weight, the company said. It has a long working life of 6-10 hours at room temperature, according to Master Bond, and the compound is 100 percent solid and has a white color. Mastersil 972TC-LO is available in 50 gram syringe kits with additional sizes upon request.
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