Preparation method of novel liquid crystal elastomer material
A technology of liquid crystal elastomers and new materials, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of low photothermal conversion efficiency, poor mechanical properties, slow response speed, etc., to achieve rapid response, good stability, The effect of good mechanical strength
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Embodiment 1
[0018] A preparation method of a liquid crystal elastomer new material, the preparation technical scheme is as follows:
[0019] According to the number of parts by mass, 130 parts of p-methoxybenzoic acid-4-allyloxybiphenyl monophenol ester, 22 parts of chiral crosslinking agent, 33 parts of polymethylhydrogensiloxane, 0.03 parts 2-bromo-spiro[9H-fluorene-9,9'-[9H]xanthene], 0.05 parts of 9,9-diethylfluorene-2-boronic acid, 0.1 parts of 6-amino-2, Add 3-indan-1-one, 0.3 parts of tris[N,N-bis(trimethylsilane)amine]erbium, 1.2 parts of polyaniline powder and 250 parts of toluene into the reaction kettle, stir for 350 minutes to dissolve ; Then dissolve 0.1 part of the catalyst with 3 parts of toluene, add it to the reaction kettle, control the temperature at 50°C, and react for 50 minutes, then put the material into the mold, ultrasonicate for 15 minutes to eliminate air bubbles, and put the mold in an oven at 70°C Cross-link for 4 hours to form a film; stretch the film-formed...
Embodiment 2
[0027] A preparation method of a liquid crystal elastomer new material, the preparation technical scheme is as follows:
[0028] According to the number of parts by mass, 124 parts of p-methoxybenzoic acid-4-allyloxybiphenyl monophenol ester, 18 parts of chiral crosslinking agent, 31 parts of polymethylhydrogensiloxane, 0.01 parts 2-bromo-spiro[9H-fluorene-9,9'-[9H]xanthene], 0.01 part of 9,9-diethylfluorene-2-boronic acid, 0.05 part of 6-amino-2, Add 3-indan-1-one, 0.05 parts of tris[N,N-bis(trimethylsilane)amine]erbium, 0.8 parts of polyaniline powder and 200 parts of toluene into the reaction kettle, stir for 30 minutes to dissolve ; Then dissolve 0.05 parts of the catalyst with 2.5 parts of toluene, add it to the reactor, control the temperature at 40°C, react for 30-60min, then add the material to the mold, ultrasonic 10min to eliminate air bubbles, and put the mold into a 60°C Cross-link in an oven for 2-6 hours to form a film; stretch the film-formed elastomer uniaxial...
Embodiment 3
[0036] A preparation method of a liquid crystal elastomer new material, the preparation technical scheme is as follows:
[0037] According to the number of parts by mass, 136 parts of p-methoxybenzoic acid-4-allyloxybiphenyl monophenol ester, 26 parts of chiral crosslinking agent, 36 parts of polymethylhydrogensiloxane, 0.1 parts 2-bromo-spiro[9H-fluorene-9,9'-[9H]xanthene], 0.1 part of 9,9-diethylfluorene-2-boronic acid, 0.5 part of 6-amino-2, Add 3-indan-1-one, 0.5 parts of tris[N,N-bis(trimethylsilane)amine]erbium, 1.6 parts of polyaniline powder and 300 parts of toluene into the reaction kettle, stir for 60 minutes to dissolve ; Then dissolve 0.15 parts of the catalyst with 3.5 parts of toluene, add it to the reaction kettle, control the temperature at 60°C, and react for 60 minutes. Cross-link for 6 hours to form a film; stretch the film-formed elastomer uniaxially by 50%-70%, and then put it in an oven at 80°C for 48 hours to obtain a new liquid crystal elastomer materi...
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