A self-initiated organic/inorganic hybrid material and its preparation method and application
A hybrid material, self-initiated technology, applied in the field of radiation curing, can solve the problems of easy sedimentation, opaque coating, limited dosage, etc., to achieve the effect of improving compatibility, weakening interaction, and improving scratch resistance
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Embodiment 1
[0025] 1. Place the four-necked flask equipped with a circulating condenser and a thermometer in an oil bath, and protect it with nitrogen gas, then add 0.1g of photoinitiator 4-acryloyloxybenzophenone, 1g of hydroxyethyl acrylate, 40 g of ethyl acrylate, 50 g of butyl acrylate, 10 g of isobornyl acrylate, 0.5 g of azobisisoheptanonitrile, and 100 g of butyl acetate were reacted at a constant temperature of 85°C for 12 hours to obtain the prepolymer A1 without double bonds.
[0026] 2. Put a four-neck flask equipped with a thermometer in an oil bath, add 19g of isophorone diisocyanate, 10g of hydroxyethyl acrylate and 0.006g of dibutyltin dilaurate, and react at a constant temperature of 45°C for 4h to obtain Hydroxyethyl acrylate isocyanate hemi-adduct A2;
[0027] 3. Take 2.9g of A2 and add it to A1 in Example 1, and react at a constant temperature of 75°C for 5 hours, and then obtain the initiated acrylate prepolymer A3.
[0028] 4. Take 10g of A3 and 0.01g of acryloyloxy ...
Embodiment 2
[0030] 1. Place the four-necked flask equipped with a circulating condenser and a thermometer in an oil bath, and protect it with nitrogen gas, then add 1g of photoinitiator 4-acryloyloxybenzophenone, 1g of hydroxyethyl acrylate, methyl 60g of ethyl acrylate, 30g of butyl acrylate, 10g of isobornyl acrylate, 0.7g of azobisisobutyronitrile, 100g of butyl acetate, and react at a constant temperature of 80°C for 12h to obtain the prepolymer A1 without double bonds.
[0031] 2. Put a four-neck flask equipped with a thermometer in an oil bath, add 19 g of isophorone diisocyanate, 10 g of hydroxyethyl acrylate and 0.006 g of dibutyltin dilaurate, and react at a constant temperature of 50 ° C for 3 hours to obtain Hydroxyethyl acrylate isocyanate hemi-adduct A2;
[0032] 3. Take 2.9 g of A2 and add it to A1 in Example 2, and react at a constant temperature at 75° C. for 5 hours to obtain the initiated acrylate prepolymer A3.
[0033] 4. Take 10g of A3 and 0.01g of acryloyloxy surfac...
Embodiment 3
[0035] 1. Place the four-necked flask equipped with a circulating condenser and a thermometer in an oil bath, and protect it with nitrogen gas, then add 1g of photoinitiator 4-acryloyloxybenzophenone, 4g of hydroxyethyl acrylate, methyl 35g of ethyl acrylate, 55g of butyl acrylate, 10g of isobornyl methacrylate, 0.7g of azobisisobutyronitrile, 100g of butyl acetate, and react at a constant temperature of 80°C for 12h to obtain the prepolymer A1 without double bonds.
[0036] 2. Put a four-neck flask equipped with a thermometer in an oil bath, add 19 g of isophorone diisocyanate, 10 g of hydroxyethyl acrylate and 0.006 g of dibutyltin dilaurate, and react at a constant temperature of 50 ° C for 3 hours to obtain Hydroxyethyl acrylate isocyanate hemi-adduct A2;
[0037] 3. Then take 11 g of A2 and add it to A1 of Example 3, and react at a constant temperature at 75° C. for 5 hours to obtain the initiated acrylate prepolymer A3.
[0038] 4. Take 10g of A3 and 0.2g of acryloyloxy...
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