Plant oil based thiol self-curing resin and preparation method and application thereof
An oil-based mercaptan, self-curing technology, applied in the field of vegetable oil modification, can solve the problems of poor compatibility between PI photolysis fragments and matrix resin, limiting the application of UV light-curing coatings, slow migration, etc., and achieve good industrial application value, Good curing effect and good safety effect
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Embodiment 1
[0030] A kind of tung oil base mercaptan self-curing resin, its preparation process is as follows:
[0031] S1. Preparation of modified tung oil: Take 8.72 g of tung oil, 0.9806 g of maleic anhydride, and 0.0097 g of p-hydroxyanisole into a round-bottomed flask, heat to 60°C to 65°C under nitrogen protection, and stir thoroughly. The maleic anhydride was completely dissolved. Add 0.0199 g of stannous octoate and react with stirring at 120 °C for 3 h to obtain clear and transparent maleic anhydride-modified tung oil.
[0032] S2. Preparation of tung oil-based mercaptan self-curing resin: add 9.7 g of maleic anhydride modified tung oil, 0.0524 g of p-hydroxyanisole, and 100 ml of glacial acetic acid into a 150 ml round-bottomed flask, and heat to 60-80 ℃, fully stirred, to fully mix the reactants, add 0.7715g mercaptoethylamine, reflux reaction at 123 ℃ for 3h, cool to room temperature, and rotary evaporate to remove glacial acetic acid to obtain semi-solid tung oil mercaptan s...
Embodiment 2
[0035] A kind of tung oil base mercaptan self-curing resin, its preparation process is as follows:
[0036] S1. Preparation of modified tung oil: Take 8.72 g of tung oil, 1.9612 g of maleic anhydride, and 0.0213 g of p-hydroxyanisole into a round-bottomed flask, and heat to 60°C to 65°C under nitrogen protection, and stir fully, so that Maleic anhydride dissolves completely. Add 0.06408 g of stannous octoate and react with stirring at 120°C for 3 h to obtain clear and transparent maleic anhydride-modified tung oil.
[0037]S2, preparation of tung oil-based mercaptan self-curing resin: get 10.68 g of maleic anhydride modified tung oil, 0.0611 g of p-hydroxyanisole, and 100 ml of glacial acetic acid in a 150 ml round-bottomed flask, heated to 60 ~ Stir well at 80°C to fully mix the reactants, add 1.543g of mercaptoethylamine, reflux at 123°C for 3 hours, cool to room temperature, spin evaporate to remove glacial acetic acid, and obtain solid tung oil mercaptan self-curing resin...
Embodiment 3
[0040] A kind of tung oil base mercaptan self-curing resin, its preparation process is as follows:
[0041] S1. Preparation of modified tung oil: add 8.72 g of tung oil, 0.72 g of acrylic acid, and 0.0095 g of p-hydroxyanisole into a round-bottomed flask, heat to 60°C to 65°C under nitrogen protection, and stir fully to make Anhydride is completely dissolved. Add 0.0189g of stannous octoate, stir and react at 120°C for 3 h, and obtain clear and transparent acrylic acid-modified tung oil.
[0042] S2. Preparation of tung oil-based mercaptan self-curing resin: take 9.44 g of maleic anhydride modified tung oil prepared in step S1, add 0.051 g of p-hydroxyanisole, and 100 ml of glacial acetic acid into a 150 ml round-bottomed flask, and heat to 60-80 ℃, fully stirred, to fully mix the reactants, add 0.7715g mercaptoethylamine, reflux reaction at 123 ℃ for 3h, cool to room temperature, rotary evaporate to remove glacial acetic acid, to obtain solid tung oil mercaptan self-curing r...
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