STUDY LEADING TO THE DEVELOPMENT OF HIGH TEMPERATURE RESISTANT ADHESIVES
- 21 June 1961
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
An investigation was made of the synthesis of high temperature resistant metal adhesives. The following phenylene- and triazine-containing polymers were prepared: (1) polyphenylene, (2) polyxylenol from 2,6-xylenol, (3) polyxylenol from 4-bromo-2,6-xylenol, (4) polyaryl ethers from o-cresol novolacs, (5) melon, (6) condensation polymer of cyanuric chloride and benzoguanamine, (7) condensation polymer of 2-amino-4,6diphenoxy triazine, and (8) condensation polymer of benzoguanamine and diphenyl carbonate (urealinked triazine pol mer). All the polymers showed good heat stability. The polyxylenols showed no weight loss up to 400 C. The polyxylenols showed excellent affinity for stainless steel. The higher molecular weight polyxylenols were difficult to mold. Modifications were made of the polyxylenols, but none of the derivatives approached the parent polymers in temperature resistance and metal adhesion. The combination of good metal-to- metal adhesion and temperature stability dictated that the ideal system should consist of a relatively low melting or liquid polymer capable of thermosetting under the conditions of cure.Keywords
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