Water-based waterproof coating added with calcium sulfate whiskers and preparation method of coating
A calcium sulfate whisker and fireproof coating technology, which is applied in fireproof coatings, antifouling/underwater coatings, epoxy resin coatings, etc., can solve problems such as poor water solubility and aging resistance, affecting material properties, and poor thermal stability. To achieve the effect of strong adhesion, simple operation and excellent performance
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Embodiment 1
[0025] Embodiment 1: a kind of water-based fireproof coating that adds calcium sulfate whisker, it is made up of the raw material of following weight portion:
[0026]
[0027] The above-mentioned preparation method of adding the water-based fireproof coating of calcium sulfate whisker, it may further comprise the steps:
[0028] S1. Weighing: Weigh each raw material according to the above ratio, the average length-to-diameter ratio of calcium sulfate whiskers is 50-80, and the diameter is 1-4 μm, and set aside;
[0029] S2. Modification: an aqueous ethanol solution prepared with anhydrous ethanol and deionized water at a volume ratio of 3:1, adding aluminate coupling agent, aluminate coupling agent and calcium sulfate crystals to the ethanol solution The weight ratio of the whiskers is 1:20, stir at 800r / min, add calcium sulfate whiskers, adjust the pH of the solution system to 4 with glacial acetic acid, stir at 2300r / min for 1 hour, and then vacuum dry to obtain modified...
Embodiment 2
[0031] Embodiment 2: a kind of water-based fireproof coating that adds calcium sulfate whisker, it is made up of the raw material of following weight portion:
[0032]
[0033]
[0034] The above-mentioned preparation method of adding the water-based fireproof coating of calcium sulfate whisker, it may further comprise the steps:
[0035] S1. Weighing: Weigh each raw material according to the above ratio, the average length-to-diameter ratio of calcium sulfate whiskers is 50-80, and the diameter is 1-4 μm, and set aside;
[0036] S2. Modification: an aqueous ethanol solution prepared with anhydrous ethanol and deionized water at a volume ratio of 3:1, adding aluminate coupling agent, aluminate coupling agent and calcium sulfate crystals to the ethanol solution The weight ratio of the whiskers is 1:30, stir at 1000r / min, add calcium sulfate whiskers, adjust the pH value of the solution system to 5 with glacial acetic acid, stir at 2700r / min for 1 hour, and then vacuum dry...
Embodiment 3
[0038] Embodiment 3: a kind of water-based fireproof coating that adds calcium sulfate whisker, it is made up of the raw material of following weight portion:
[0039]
[0040] The above-mentioned preparation method of adding the water-based fireproof coating of calcium sulfate whisker, it may further comprise the steps:
[0041] S1. Weighing: Weigh each raw material according to the above ratio, the average length-to-diameter ratio of calcium sulfate whiskers is 50-80, and the diameter is 1-4 μm, and set aside;
[0042] S2. Modification: an aqueous ethanol solution prepared with anhydrous ethanol and deionized water at a volume ratio of 3:1, adding aluminate coupling agent, aluminate coupling agent and calcium sulfate crystals to the ethanol solution The weight ratio of the whiskers is 1:22, stir at a speed of 900r / min, add calcium sulfate whiskers, adjust the pH of the solution system to 4.5 with glacial acetic acid, stir at a speed of 2500r / min for 1 hour, and then vacuu...
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