Self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion and preparation method and application
A terpene-based epoxy resin, non-ionic technology, applied in the field of polyols, can solve problems such as complex synthesis processes, and achieve excellent UV resistance, excellent mechanical properties, and simple manufacturing methods
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Embodiment 1
[0032] Add 80.1g TME, 6.4g PEG with an average relative molecular weight of 6000, and 7.4g TMP to a three-neck flask equipped with a thermometer, a stirrer, and a condenser tube, heat and stir to 90°C, add 1.21g sulfuric acid (diluted with 5.6g acetone) , maintain the reaction at 110°C for 1 hour; after the reaction, stir and disperse directly with deionized water to obtain a milky white polyol emulsion with a hydroxyl value of 100mg / g (solid resin) and a viscosity of 61mPa·s (25°C, 40% solid content) , Z average particle size 194nm. The infrared spectrum of the polyalcohol is shown as figure 1 As shown, the particle size distribution is as figure 2 shown.
[0033] Take 10.0g of the above-mentioned polyol emulsion (40% solid content), add 2g of hydrophilic modified polydiisocyanate S100, stir and mix evenly, dilute with 2g of water, coat the film, and measure the performance of the paint film after 7 days of maintenance at room temperature. Table 1.
Embodiment 2
[0035] In a three-neck flask equipped with a thermometer, a stirrer, and a condenser tube, add 40g HTME, 7.2g PEG with an average relative molecular weight of 10000, and 7.5g TMP respectively, heat and stir to 90°C, add 0.40g boron trifluoride diethyl ether (with 2.7g Diluted with acetone), maintain the reaction at 110°C for 2h; after the reaction, stir and disperse directly with deionized water to obtain a milky white polyol emulsion with a hydroxyl value of 200mg / g (solid resin) and a viscosity of 579mPa·s (25°C, 30% Solid content), Z average particle size 256nm.
[0036] Take 10.0g of the above-mentioned polyol emulsion (30% solid content), add 2g of hydrophilic modified polydiisocyanate S100, stir and mix evenly, dilute with 2g of water, coat the film, and measure the performance of the paint film after 7 days of maintenance at room temperature. Table 1.
Embodiment 3
[0038] In a three-neck flask equipped with a thermometer, a stirrer, and a condenser tube, add 37g TME, 3.7g PEG with an average relative molecular weight of 4000, and 7.6g TMP respectively, heat and stir to 90°C, add 0.46g boron trifluoride diethyl ether (with 2.6g Diluted with acetone), maintain the reaction at 115°C for 2h; after the reaction, stir and disperse directly with deionized water to obtain a milky white polyol emulsion with a hydroxyl value of 250mg / g (solid resin) and a viscosity of 21mPa·s (25°C, 40% Solid content), Z average particle size 295nm.
[0039] Take 10.0g of the above-mentioned polyol emulsion (40% solid content), add 3.2g of hydrophilic modified polydiisocyanate S100, stir and mix evenly, dilute with 1g of water, apply a film, and measure the performance of the paint film after 7 days of maintenance at room temperature As in Table 1.
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