Paint for vacuum film coating and its preparation method
A vacuum coating and coating technology, which is applied in vacuum evaporation coating, coating, sputtering coating, etc., can solve the problems of decreased temperature resistance, slow cross-linking rate, and low cross-linking density of film-forming materials, and achieves improved Cross-link density, high cross-link density, and excellent adhesion
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Embodiment 1
[0017] Embodiment 1: the component of vacuum coating coating and parts by weight thereof (in gram) are as follows:
[0018] The first part contains hydroxyl polybutadiene HTPB(II) 100.00 (containing 0.0988molOH group)
[0019] Toluene diisocyanate 17.19 (containing 0.1976mol NCO group)
[0020] Phenol 9.58 (containing 0.1019mol active hydrogen atoms)
[0021] Toluene 220.00
[0022] The second part contains hydroxyl polybutadiene HTPB (II) 100.00 (containing 0.0988molOH group)
[0023]According to the above ratio, mix the first part of hydroxyl-containing polybutadiene, HTPB(II), toluene diisocyanate and toluene in a reaction flask equipped with stirring, thermometer, and condensing reflux tube, heat to 80°C, and keep warm for 4 hours Carry out the reaction to form a compound with NCO groups attached to the molecular chain, then add phenol and heat to 90°C for 4 hours, and finally add the second part of hydroxyl-containing polybutadiene, namely HTPB(II), and mix well.
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Embodiment 2
[0026] Embodiment 2: the component of this example vacuum coating coating and parts by weight (unit is gram) are as follows:
[0027] The first part contains hydroxyl polybutadiene HTPB(II) 100.00 (containing 0.0988molOH group)
[0028] Toluene diisocyanate 15.56 (containing 0.1786mol NCO group)
[0029] Phenol 7.76 (containing 0.0826mol active hydrogen atoms)
[0030] Toluene 200.00
[0031] The second part contains hydroxyl polybutadiene HTPB (II) 81.02 (containing 0.0801molOH group)
Embodiment 3
[0032] Embodiment 3: the component of this example vacuum coating coating and parts by weight (unit is gram) are as follows:
[0033] The first part contains hydroxyl polybutadiene HTPB (I) 100.00 (containing 0.1724molOH group)
[0034] Toluene diisocyanate 29.98 (containing 0.3446mol NCO group)
[0035] Phenol 16.70 (containing 0.1777mol active hydrogen atoms)
[0036] Toluene 240.00
[0037] The second part contains hydroxyl polybutadiene HTPB (I) 100.00 (containing 0.1724molOH group)
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