Flexible protective layer, cork composite material structure with flexible protective layer and preparation method of flexible protective layer
A composite material and flexible protection technology, which is applied in coatings, epoxy resin coatings, and devices for coating liquid on the surface, etc., can solve the problem of reducing the flexibility of cork composite materials, lack of surface protection, and poor construction process and other problems, to achieve the effect of stable method and construction process, high glue uniformity, and good surface morphology
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[0037] Embodiments of the present invention also provide a method for preparing a cork composite structure, comprising the following steps:
[0038] (1) Weigh the raw materials according to the following ratio:
[0039] 8-10 parts of hydantoin epoxy resin, 80-100 parts of polysulfone, 800-1500 parts of diluent, 1-2 parts of polyetheramine, 1-2 parts of diaminodiphenyl sulfone;
[0040] (2) The hydantoin epoxy resin and polysulfone taken by weighing are dissolved in the diluent to obtain a mixed solution;
[0041] (3) Add polyetheramine and diaminodiphenylsulfone weighed to the mixed solution obtained in step (2), and mix;
[0042] (4) Coating the mixed solution obtained in step (3) on the surface of the cork composite material layer, and obtaining the cork composite material structure after curing.
[0043] In an optional embodiment, the step (2) of obtaining the mixed solution includes: mixing at 15-45° C. for 20-60 minutes to obtain the mixed solution. Under this mixing t...
Embodiment I
[0049] This embodiment provides a kind of cork composite material, and preparation method comprises:
[0050] (1) Taking natural cork powder as raw material, screening out cork particles with a particle size of 30 to 60 mesh;
[0051] (2) Weigh 200g of the above-mentioned cork particles, lay them flat in a container, dry them under normal pressure at 120°C, and take them out after 24 hours;
[0052] (3) The cork particles, boron-modified phenolic adhesive, and methylphenyl silicone rubber (the molar content of phenyl is 20%) after normal pressure drying are mechanically stirred and mixed according to the mass ratio of 100:15:5, The mixing time is 30 minutes, and the polym-phenylene isophthalamide fiber (length 5-10 mm) is added in 2 parts by mass and mixed for 30 minutes to obtain a mixed material;
[0053](4) Put the above-mentioned mixed material into the mold, apply 5 tons of pressure, and place the mold on a vulcanizing machine for constant temperature curing. The curing ...
Embodiment II
[0056] This embodiment provides a kind of cork composite material, and preparation method comprises:
[0057] (1) Taking natural cork powder as raw material, screening out cork particles with a particle size of 30 to 60 mesh;
[0058] (2) Weigh 200g of the above-mentioned cork particles, lay them flat in a container, dry them under normal pressure at 120°C, and take them out after 24 hours;
[0059] (3) Mechanically stir the cork particles, boron-modified phenolic adhesive, and methylphenylvinyl silicone rubber (the molar content of phenyl is 5%) after drying under normal pressure at a ratio of 100:10:10 Mixing, the mixing time is 60min, continue to add polyphenylene sulfide fibers (length 5-10mm) with a mass fraction of 3.5 and mix for 60min to obtain a mixed material;
[0060] (4) Put the above-mentioned mixed material into the mold, apply 10 tons of pressure, and put the mold on the vulcanizing machine for gradient temperature curing, the first stage: curing at 120°C for 4...
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Abstract
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