Monomer containing colloidal silica, solidified resin composition and resin solidified article thereof
A technology of colloidal silica and resin cured products, which can be used in coatings, coastline protection, sea area engineering, etc., and can solve problems such as difficulty in reproducibility, lack of high elasticity, high heat resistance, and difficulty in response
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Embodiment 1
[0061] Colloidal silica (SiO 2 Ingredients 30%, average particle diameter 20nm / Nissan Chemical Co., Ltd. 400 parts by weight, di-n-butyltin dilaurate (DBTDL) 0.05 parts by weight was added as a catalyst, and stirred at room temperature (20° C.) for 24 hours. The reaction of the isocyanate group was confirmed by infrared spectroscopy (IR) (the disappearance of the isocyanate group and the presence of a urethane bond were confirmed), and the solvent was removed in an evaporator to obtain a colloidal silica-containing monomer. Next, for 100 parts of above-mentioned monomers containing colloidal silicon dioxide, add initiator benzoyl peroxide 1 weight part, do bulk polymerization at 80 DEG C * 12 hours, obtain the test piece (resin cured product) of embodiment 1 .
Embodiment 2
[0063] For 100 parts by weight of dimethylpropionyloxyethyl isocyanate (MOI) (molecular weight 155 / manufactured by Showa Denko Co., Ltd.), methyl isobutyl ketone (MIBK) was added as a solvent to disperse colloidal silica (SiO 2 Ingredients 30%, average particle diameter 20nm / Nissan Chemical Co., Ltd.) 330 parts by weight, catalyst di-n-butyltin dilaurate (DBTDL) 0.04 parts by weight, stirred at room temperature (20° C.) for 24 hours. Add isopropanol equal to or more than MOI to the reaction solution and stir for 3 hours, confirm the reaction of isocyanate group with IR (confirm the disappearance of isocyanate group and the existence of urethane bond), and remove unreacted isocyanate in an evaporator. Propanol and solvent yield monomers containing colloidal silica. Next, for above-mentioned 80 parts of monomers containing colloidal silicon dioxide, MMA20 weight parts, add initiator benzoyl peroxide (BPO) 1 weight part, do bulk polymerization of 80 ℃ * 12 hours, obtain embodimen...
Embodiment 3
[0065] With respect to 100 parts by weight of isophorone isocyanate (IPDI), 59 parts by weight of 2-hydroxyethyl methacrylate (HEMA) was equimolar, and 0.07 parts by weight of catalyst DBTDL was added to obtain HEMA-IPDI monomer. This monomer was added to MIBK dispersed colloidal silica (SiO 2 After stirring at room temperature (20° C.) for 24 hours to 530 parts by weight of a component of 30%, an average particle diameter of 20 nm / manufactured by Nissan Chemical Co., Ltd., isopropanol was added. The reaction of isocyanate groups was confirmed by IR (disappearance of isocyanate groups and presence of urethane bonds were confirmed), and unreacted isopropanol was removed in an evaporator to obtain a colloidal silica-containing monomer. With respect to 100 parts by weight of the above-mentioned monomer containing colloidal silica, 1 part by weight of initiator BPO was added, and the whole was polymerized at 80° C. for 12 hours to obtain the test piece (resin cured product) of Exa...
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Abstract
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