A kind of porous phenolic cloth pipe and its preparation method and application
A technology for pipe layout and phenolic formaldehyde is applied in the field of porous phenolic cloth pipe and its preparation, which can solve the problems of uneven pore distribution of porous materials, inability to form through holes, uneven pore size distribution, etc.
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[0024] The invention provides a kind of preparation method of porous phenolic cloth pipe, comprises the following steps:
[0025] Arrange cotton in hydrogenated silicone oil, impregnate once, and obtain silicone oil-impregnated cotton cloth after baking;
[0026] Arranging the silicone oil-impregnated cotton in the phenolic resin solution, impregnating it for the second time, and obtaining the cloth tube after winding;
[0027] curing the cloth pipe to obtain a cured cloth pipe;
[0028] The hydrogenated silicone oil in the cured cloth pipe is removed to obtain a porous phenolic cloth pipe.
[0029] In the present invention, unless otherwise specified, the preparation materials used are commercially available products well known in the art.
[0030] The invention arranges the cotton in the hydrogenated silicone oil, impregnates it once, and obtains the silicone oil-impregnated cotton cloth after baking. In the present invention, the cotton cloth is preferably high-count cot...
Embodiment 1
[0050] Ultrasonic cleaning of the cotton cloth in acetone for 5 minutes to obtain the cleaned cotton cloth;
[0051] Put the hydrogenated silicone oil in the dipping tray, and arrange the cleaned cotton on the uncoiler. After the cotton cloth is impregnated with the hydrogenated silicone oil in the dipping tray, it is baked online, and the cotton cloth is wound into a silicone oil-impregnated cotton cloth by a three-roller winding machine; The pressure is 30N, the impregnation speed is 0.5m / s, the baking temperature is 70°C, and the time is 2-4s;
[0052] Dilute the phenolic solution with a mass concentration of 30 to 40 wt% with ethyl acetate to obtain a phenolic resin solution with a mass concentration of 15 to 20 wt%. After impregnating the phenolic resin solution in the rubber disc, use a three-roll winding machine to wind it into a cloth tube; the pressure of the pressing roller is 10N, and the impregnation speed is 0.05m / s;
[0053] The cloth pipe is cured in a vacuum a...
Embodiment 2
[0056] Ultrasonic cleaning of the cotton cloth in acetone for 5 minutes to obtain the cleaned cotton cloth;
[0057] Put the hydrogenated silicone oil in the dipping tray, impregnate the cleaned cotton cloth in the dipping tray with hydrogenated silicone oil, then bake it, and wind the cotton cloth into a silicone oil-impregnated cotton cloth with a three-roll winding machine; the pressure of the pressing roller is 50N, and the impregnation speed 0.5m / s, the baking temperature is 70°C, and the baking time is 2-4s;
[0058] Dilute the phenolic resin solution that the mass concentration is 30~40wt% with ethyl acetate, the ratio is 2:1, obtain the phenolic resin solution that the mass concentration is 10~13.3wt%; Described phenolic resin solution is placed in the dipping tray, put Unwind the cotton cloth impregnated with silicone oil, impregnate the phenolic resin solution in the dipping tray, and wind it into a cloth tube with a three-roller winding machine; the pressure of the ...
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Abstract
Description
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Application Information
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