Photo/thermal double crosslinkable hyperbranched polycarbosilane benzocyclobutene resin and preparation method thereof
A technology of benzocyclobutene and bromobenzocyclobutene is applied in the field of hyperbranched polycarbosilane benzocyclobutene resin and its preparation, which can solve the problems of cumbersome preparation process, limited wide application, and influence of material performance preparation process bigger problems
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Embodiment 1
[0042] A kind of preparation method of hyperbranched polycarbosilane benzocyclobutene resin capable of photo / thermal double crosslinking, the steps are:
[0043] Using magnesium (Mg) as a catalyst and tetrahydrofuran (THF) as a solvent, chloromethyltrichlorosilane (Cl 3 SiCH 2 Cl), 4-bromobenzocyclobutene (4-BrBCB), p-bromostyrene (C 8 h 7 Br), bromooctane (C 8 h 17 Br) preparation, according to chloromethyltrichlorosilane: monomer I: monomer II: monomer III: magnesium (Mg) molar ratio 1:3:3:2:1.5 feeding intake;
[0044] Add magnesium chips (Mg) (0.36g, 15mmol) and a catalytic amount of iodine into a dry flask equipped with a magnetic stirrer, a constant pressure dropping funnel, and a reflux condenser, seal it, vacuumize it, and fill it with nitrogen to remove oxygen in the system , repeated three times. Under nitrogen protection, add chloromethyltrichlorosilane (Cl 3 SiCH 2 Cl) (1.84g, 10mmol) in tetrahydrofuran (THF) (37.5mL) solution, drop a little in the flask an...
Embodiment 2
[0047] A kind of preparation method of hyperbranched polycarbosilane benzocyclobutene resin capable of photo / thermal double cross-linking, the steps are: take magnesium (Mg) as catalyst, tetrahydrofuran (THF) as solvent, by chloromethyltrichlorosilane (Cl 3 SiCH 2 Cl), 4-bromobenzocyclobutene (4-BrBCB), p-bromostyrene (C 8 h 7 Br), bromooctane (C 8 h 17 Br) is prepared by feeding in the molar ratio of chloromethyltrichlorosilane:monomer I:monomer II:monomer III:magnesium (Mg) 1:4:3:2:1.5.
[0048] The preparation method is the same as in Example 1.
[0049] Basic features: white or light yellow viscous jelly; the structural characterization results are the same as in Example 1.
[0050] Example: 3:
[0051] A kind of preparation method of hyperbranched polycarbosilane benzocyclobutene resin capable of photo / thermal double cross-linking, the steps are: take magnesium (Mg) as catalyst, tetrahydrofuran (THF) as solvent, by chloromethyltrichlorosilane (Cl 3 SiCH 2 Cl), 4-b...
Embodiment 4
[0055] A kind of preparation method of hyperbranched polycarbosilane benzocyclobutene resin capable of photo / thermal double cross-linking, the steps are: take magnesium (Mg) as catalyst, tetrahydrofuran (THF) as solvent, by chloromethyltrichlorosilane (Cl 3 SiCH 2 Cl), 4-bromobenzocyclobutene (4-BrBCB), p-bromostyrene (C 8 h 7 Br), bromooctane (C 8 h 17 Br) is prepared by feeding in according to the molar ratio of chloromethyltrichlorosilane:monomer I:monomer II:monomer III:magnesium (Mg) 1:3:3:3:1.5.
[0056] The preparation method is the same as in Example 1.
[0057] Basic features: white or light yellow viscous jelly; the structural characterization results are the same as in Example 1.
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