Alkyd resin material as well as preparation method and application thereof
An alkyd resin and alkyd technology, applied in the field of materials, can solve the problems of drying speed, hardness, weather resistance, water resistance and salt spray resistance, and achieve good chemical stability, smooth and bright paint film, and improved hardness Effect
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[0017] The embodiment of the present invention provides a kind of preparation method of alkyd resin material, specifically comprises the following steps:
[0018] S1: Add linseed oil, trimethylolpropane and lithium hydroxide to the first reaction vessel, heat the oil bath to 220°C to 240°C for alcoholysis reaction, then cool down, and continue to add o-benzene in the first reaction vessel Diformic anhydride and xylene are heated to 220°C to 230°C for esterification reaction and then cooled down. After adding organosiloxane and deionized water dropwise to the first reaction vessel for heat preservation reaction, they are cooled and filtered to obtain Silicone modified alkyd macromolecule.
[0019] In the embodiment of the present invention, the step S1 specifically includes:
[0020] S11: Add linseed oil, trimethylolpropane and lithium hydroxide into the first reaction vessel, pass through nitrogen protection, and heat the oil bath to 220°C-240°C to carry out alcoholysis react...
Embodiment 1
[0051] Get 145g linseed oil, 67g trimethylolpropane, 0.1g catalyst LiOH·H 2 O was placed in a three-neck round bottom flask, and N 2 For protection, heat the oil bath to 240°C and keep warm until the mixture of V (methanol): V (alcoholyzate) = 4: 1 becomes clear and begins to cool down. Cool down to 160°C, add 89g of phthalic anhydride and 100ml of xylene, slowly raise the temperature to 220°C, install a water separator to remove the water generated by the esterification reaction, and cool down when the acid value of the system drops to 10mgKOH / g. The temperature was lowered to 150° C., and the xylene in the system was removed by vacuuming. Continue to lower the temperature to 90°C, add 80g of methyltrimethoxysilane, and dropwise add 18g of deionized water to the system within 2 hours. After the dropwise addition, keep warm for 2 hours, cool down to room temperature, and then filter to obtain organosilicon-modified alkyd macromolecules for future use.
[0052] Add 20g of or...
Embodiment 2
[0055] Get 145g linseed oil, 67g trimethylolpropane, 0.1g catalyst LiOH·H 2 O was placed in a three-neck round bottom flask, and N 2 For protection, heat the oil bath to 240°C and keep warm until the mixture of V (methanol): V (alcoholyzate) = 4: 1 becomes clear and begins to cool down. Cool down to 160°C, add 89g of phthalic anhydride and 100ml of xylene, slowly raise the temperature to 220°C, install a water separator to remove the water generated by the esterification reaction, and cool down when the acid value of the system drops to 10mgKOH / g. The temperature was lowered to 150° C., and the xylene in the system was removed by vacuuming. Continue to cool down to 90°C, add 80g of methyltriethoxysilane, and dropwise add 18g of deionized water to the system within 2 hours. After the dropwise addition, keep warm for 2 hours, cool down to room temperature, and then filter to obtain organosilicon-modified alkyd macromolecules for future use.
[0056] Add 20g of organosilicon m...
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