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Outdoor waterproof weather-proof wave-absorbing material and preparation method thereof
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A wave-absorbing material and weather-resistant technology, applied in the field of materials, can solve the problems of difficult realization of waterproof cloth, influence of waterproof effect, and difficulty in sealing
Active Publication Date: 2015-05-13
DALIAN DONGSHIN MICROWAVE TECH
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The polyurethane sponge absorbing material has an open-pore structure, and its performance is realized by impregnating absorbing agents and flame retardants. Therefore, this type of absorbing material can only be used indoors, but it cannot be used for absorbing materials used in outdoor laboratories. fulfil requirements
[0003] At present, the wave-absorbing materials used in the field laboratory are generally covered with a layer of waterproof cloth on the surface of the open-cell polyurethane sponge wave-absorbing material. The wave-absorbing material is generally made into a pyramid shape. The material has dozens of cone points, so it is sometimes difficult to directly cover the waterproof cloth. In addition, it is difficult to completely seal the waterproof cloth at the seam, which also affects the waterproof effect.
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Embodiment 1
[0057] Embodiment 1, the components by weight of the flame retardant rainproof coating and the content of each component include:
[0078] At the same time, a preparation method for outdoor waterproof and weather-resistant wave-absorbing materials is also provided, including:
[0079] Add the dispersant, defoamer, pigment and filler, and flame retardant in specified proportions by weight to deionized water, and grind the mixture for 4 hours;
[0080] Add the film-forming substance to the above-mentioned ground mixture, stir in the disperser for 0.5 hours, and filter the material to obtain a flame-retardant and rainproof coating; the...
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Abstract
The invention discloses an outdoor waterproof weather-proof wave-absorbing material and a preparation method thereof. The outdoor waterproof weather-proof wave-absorbing material is prepared by using a porous polyurethanesponge wave-absorbing material as a matrix, and coating a layer of completely closed flame-retardant rainproof coating on the outer surface of the matrix, wherein the flame-retardant rainproof coating is prepared from the following components in parts by weight: film forming matter: 28-30 parts of fluorocarbonemulsion and 26-32 parts of pure acrylic emulsion, pigment packing: 4-6 parts of titanium dioxide, fire retardants: 8-10 parts of aluminum hydroxide, and 5-8 parts of ammoniumpolyphosphate, 0.4-0.5 parts of a dispersing agent, 0.4-0.5 parts of a defoaming agent, and 15-27 parts of deionized water. The outdoor waterproof weather-proof wave-absorbing material has the characteristics of flame retardance, rainwater prevention and weather resistance.
Description
technical field [0001] The invention relates to the technical field of materials, in particular to an outdoor waterproof and weather-resistant wave-absorbing material and a preparation method thereof. Background technique [0002] At present, the widely used absorbing material is polyurethanesponge absorbing material, which is mainly used in the construction of radio anechoic chambers (non-echo chambers, microwave anechoic chambers), radio anechoic chambers, absorbing screens and absorbing walls, etc., to cover reflectors in the test environment. , Reduce background noise, eliminate clutter interference, and improve test accuracy. The polyurethanesponge absorbing material has an open-pore structure, and its performance is realized by impregnating absorbing agents and flame retardants. Therefore, this type of absorbing material can only be used indoors, but it cannot be used for absorbing materials used in outdoor laboratories. fulfil requirements. [0003] At present, th...
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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