Waterproof canvas
A canvas and waterproof layer technology, applied in the field of canvas, can solve problems such as easy to freeze and crack, easy to mold, and application restrictions, and achieve excellent breaking strength, good anti-mold and bactericidal effect
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Embodiment 1
[0014] A waterproof canvas, the waterproof canvas is based on high-strength polyester canvas, at least one side of the base fabric is coated with a polyvinyl chloride waterproof layer, and the polyvinyl chloride waterproof layer is made of the following raw materials by weight: 35 parts of polyvinyl chloride resin , 6 parts of polyacrylamide, 0.5 part of dioctyl phthalate, 0.5 part of 1,2-phenylpropylisothiazolin-3 ketone, 0.3 part of antioxidant RD, 12 parts of modified diatomaceous earth, 13 parts of polyvinyl alcohol 1.5 parts of p-phenylenediamine, 5 parts of diisocyanate.
[0015] The preparation method of modified diatomite is as follows: place diatomite in a muffle furnace at 450°C for 6 h pretreatment, cool to room temperature, take diatomite, and add anhydrous ethanol and water with a volume ratio of 1:1. In the mixed solution, add dilute acetic acid solution dropwise to adjust the pH of the mixed solution to 4, pre-stir in a water bath at 70°C for 30 minutes, add a s...
Embodiment 2
[0017] A waterproof canvas, the waterproof canvas is based on high-strength polyester canvas, at least one side of the base fabric is coated with a polyvinyl chloride waterproof layer, and the polyvinyl chloride waterproof layer is made of the following raw materials by weight: 30 parts of polyvinyl chloride resin , 5 parts of polyacrylamide, 0.2 part of dioctyl phthalate, 0.1 part of antioxidant RD, 8 parts of modified diatomaceous earth, 10 parts of polyvinyl alcohol, 1 part of p-phenylenediamine, 3 parts of diisocyanate;
[0018] The preparation method of modified diatomite is as follows: place diatomite in a muffle furnace at 450°C for 6 h pretreatment, cool to room temperature, take diatomite, and add anhydrous ethanol and water with a volume ratio of 1:1. In the mixed solution, add dilute acetic acid solution dropwise to adjust the pH of the mixed solution to 4, pre-stir in a water bath at 70°C for 30 minutes, add a silane coupling agent, continue stirring for 2 hours, an...
Embodiment 3
[0020] A waterproof canvas, the waterproof canvas is based on high-strength polyester canvas, at least one side of the base fabric is coated with a polyvinyl chloride waterproof layer, and the polyvinyl chloride waterproof layer is made of the following raw materials by weight: 32 parts of polyvinyl chloride resin , 6 parts of polyacrylamide, 0.3 parts of dioctyl phthalate, 0.2 parts of tetrachloro-4-methylsulfonyl pyridine, 0.2 parts of anti-aging agent RD, 9 parts of modified diatomaceous earth, 12 parts of polyvinyl alcohol , 1.2 parts of p-phenylenediamine, 4 parts of diisocyanate;
[0021] The preparation method of modified diatomite is as follows: place diatomite in a muffle furnace at 450°C for 6 h pretreatment, cool to room temperature, take diatomite, and add anhydrous ethanol and water with a volume ratio of 1:1. In the mixed solution, add dilute acetic acid solution dropwise to adjust the pH of the mixed solution to 4, pre-stir in a water bath at 70°C for 30 minutes...
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