Adhesive bonding of TATB/Kel-F 800
Triaminotrinitrobenzene (TATB) bonded with a copolymer of chlorotrifluoroethylene and vinylidene fluoride (Kel-F 800) was selected as the high explosive for use in the B77 bomb. The plastic-bonded explosive (RX-03-BB, 7.5 percent Kel-F 800) has high strength and is less sensitive to shock initiation than most previously used high explosives. Adhesive bonding of RX-03-BB has proved to be difficult, however, because of the chemical composition of both the TATB and the binder. Studies of the critical surface tension of the TATB, the binder, and the RX-03-BB using contact-angle measurements were made. Surface-tension measurements were made on modified epoxies and used as a guide in formulating new adhesives. A new adhesive, EXPLOSTIK 473, has a surface tension less than RX-03-BB and has satisfactory bond strength to over 75/sup 0/C.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7232033
- Report Number(s):
- UCID-17319
- Country of Publication:
- United States
- Language:
- English
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