Page 688 - Carrahers_Polymer_Chemistry,_Eighth_Edition

Selected Topics 651

O

NH
S CH 3
O H 3 C N +
O
H C CH
CH 3 3 2
O 2 H +
CH 3 O
N O
O
S
N N
N S
H 3 C CH 3 O
O O
Cu +2 Cu +1

CH
CH 3 3
O
O
CH 3
CH 3 OH

FIGURE 19.9 Reactions involved in the hardening process.

O

CH 3 CH 3
CH
CH 3 3
O R 1
H C
2
R 1
O
O O
R

R
FIGURE 19.10 Polymerization of one end of the TEGMA.

Along with their use with bolts, they are also employed in securing screws in various mechanical
and electrical applications.
Bolts are generally disconnected by heating to about 400 C thereby thermally degrading the
o
adhesive matrix allowing the bolt to become disengaged.
Different mixtures of anaerobic adhesives are available that offer a variety of curing times,
strengths, and compatibilities. A typical cure time is 20 min for cure to begin, vibration resistance

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