POSS/fluorosilicon co-modified polymethyl methacrylate resin and preparation and moulding method thereof
A technology of polymethyl methacrylate and acrylate, applied in the field of POSS/fluorosilicon co-modified polymethyl methacrylate resin and its preparation and molding, to achieve improved hardness and scratch resistance, and good comprehensive application effect Effect
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Embodiment 1
[0031] (1) Synthesis of polymerizable fluorocarbon-based siloxane-modified acrylate FS-1
[0032] In a three-neck flask equipped with a thermometer, a reflux condenser, and a stirrer, add 0.03mol (16.38g) perfluorodecylethylene and 200ppm platinum catalyst KP22 in sequence, stir and heat to 80°C for 60 minutes of coordination reaction, then add 0.01mol (2.43g) Tetramethylcyclotetrasiloxane D 4 H Stir the reaction for 20 minutes, then add 0.01mol (2.26g) of 1,6-hexanediol diacrylate and control the temperature at 80°C and continue to stir the reaction for 8 hours. After the reaction is completed, decompress and remove the low boiling point to obtain a total of 21.07g, the structure of which is as follows: (1) shown M=H, A=-(CH 2 ) 6 OCOCH 2 CH 2 -, R f =-C 8 f 17 Polymerizable reactive fluorocarbon-based siloxane-modified acrylate FS-1.
[0033] (2) Preparation and molding of POSS / fluoro-silicon co-modified PMMA resin
[0034] According to the mass ratio, weigh 10g of...
Embodiment 2
[0036] (1) Synthesis of polymerizable fluorocarbon-based siloxane-modified acrylate FS-2
[0037] In a three-neck flask equipped with a thermometer, a reflux condenser, and a stirrer, add 0.031mol (13.8g) perfluorooctylethylene and 200ppm platinum catalyst KP22 in sequence, stir and heat to 80°C and carry out a coordination reaction for 60 minutes, then Add 0.01mol (2.43g) tetramethylcyclotetrasiloxane D 4 H Stir the reaction for 20min, then add 0.01mol (5.60g), M=CH 3 , b=7, the structure is CH 2 =C(CH 3 ) COO (C 3 h 6 O) 7 COC(CH 3 )=CH 2 , Mn of about 560 polypropylene glycol dimethacrylate and temperature control 100 ℃ continuous stirring reaction 8h, the reaction is over, decompression off low boiling, to get a total of 21.83g product, that is, the structure as shown in formula (1), M=CH 3 , b=7, A=-(C 3 h 6 O) 7 COCH (CH 3 )CH 2 -, R f =-C 6 f 13 The polymerizable reactive fluorocarbon-based siloxane-modified methacrylate (FS-2).
[0038] (2) Preparatio...
Embodiment 3
[0041] (1) Synthesis of polymerizable fluorocarbon-based siloxane-modified acrylate FS-3
[0042] In a three-necked flask equipped with a thermometer, a reflux condenser, and a stirrer, add 0.031mol (13.83g) perfluorooctylethylene and 300ppm chloroplatinic acid catalyst in sequence, stir and heat to 80°C and carry out a coordination reaction for 60min. Then add 0.01mol (2.43g) tetramethylcyclotetrasiloxane D 4 H Stir the reaction for 20min, then add 0.01mol (2.14g), M=H, a=2, the structure is CH 2 =CHCOO(C 2 h 4 O) 2 OCCH=CH 2 The ethylene glycol diacrylate was prepared and reacted with continuous stirring at 100° C. for 10 hours. After the reaction was completed, the low boiling point was removed under reduced pressure to obtain a total of 18.40 g, the structure of which was shown in formula (1), M=H, A=-( C 2 h 4 O) 2 COCH 2 CH 2 -, R f =-C 6 f 13 Polymerizable reactive fluorocarbon-based siloxane-modified acrylate (FS-3).
[0043] (2) Preparation and molding ...
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