Alkyd paint for ship cabin and its production process
An alkyd resin and paint technology, applied in the direction of biocide-containing paints, coatings, antifouling/underwater coatings, etc., can solve the problems of harmful substances in paints, environmental pollution, etc., and improve temperature resistance and mechanical properties. , the effect of large heat absorption
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Embodiment 1
[0053] Embodiment 1: the preparation of silicone resin
[0054] Add 412 parts of water, 30 parts of butanol and 41 parts of xylene to the reaction kettle and start stirring. Mix 62.5 parts of phenyltrichlorosilane and 165.0 parts of methyldichlorosilane and 165 parts of xylene in a container and mix them evenly in a container. Hours added. Cool the jacket of the reaction kettle with cold water to control the temperature of the liquid material in the kettle not to exceed 22°C. After the dropwise addition, stop stirring and let it stand for 1 hour to separate the liquid in the kettle, release the water layer, and then add clean water to stir for washing . Set aside to settle and separate layers, turn on water, and wash until neutral, and the acid value is less than 1mgKOH / g. Finally, put the silicone resin liquid into the distillation pot for vacuum distillation to remove water and part of the solvent, control the temperature not to exceed 70°C, concentrate until the non-vola...
Embodiment 2
[0055] Embodiment 2: the preparation of alkyd resin
[0056] Add 53 parts of soybean oil and 8 parts of linseed oil or tung oil into the reaction kettle, stir to raise the temperature, and introduce CO 2, heat up to 120°C, add 0.02-0.04 parts of lithium hydroxide, continue to heat up to 240°C, add 15.5 parts of pentaerythritol, keep warm at 230-240°C for alcoholysis reaction, take a sample to measure the tolerance after one hour. The method for measuring tolerance is: mix 1 volume of sample with 5 volumes of 95% ethanol in a 100ml beaker, and the solution becomes clear and transparent at about 25°C, indicating that the alcoholysis is complete. After the alcoholysis is completed, cool down to 160°C, add 26.9 parts of phthalic anhydride and 6 parts of xylene, heat up to 200±2°C for 1 hour, then raise the temperature to 220°C for reflux dehydration, keep warm at 230°C, and take samples for determination according to The following method is used to measure the acid value and visc...
Embodiment 3
[0067] Embodiment 3: Preparation of silicone resin modified alkyd resin
[0068] Add 25 parts of the silicone resin produced in step 1.1 and 75 parts of the alkyd resin produced in step 1.2 into the reaction kettle, raise the temperature to 173-175°C, azeotropically separate water, drain the water and raise the temperature to 190 ~200℃ heat preservation reaction. Take the sample and xylene and dissolve it evenly in a weight ratio of 6:4. Use a Grignard tube to measure the viscosity at 25°C. When the viscosity reaches 2.5 to 3 seconds, stop heating, cool below 140°C, dissolve with solvent gasoline and dilute to a solid content of 55± 2% resin solution, filtered.
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