Explosion-proof coating convenient to construct and preparation method

Abstract

The invention relates to an explosion-proof coating convenient to construct which comprises a component A and a component B. The component A comprises 0.1-1% of carbon nanotubes, 0.1-1% of a coupling agent, 78-94% of self-made radix asparagi polyurea resin, 4.5-15% of a flame retardant and 1-5% of an antioxidant, with the sum of the percentages of all the components being 100%. The component B comprises 60-80% of isocyanate and 20-40% of polyether polyol, with the sum of the percentages of all the components being 100%. The component A and the component B are mixed according to the ratio of (2-3):1, and the explosion-proof coating can be obtained by spraying, brushing and roller coating. The radix asparagi polyurea resin system is adopted, the gelation time is not longer than 2 h after the component A and the component B are mixed, spray coating, brush coating and roll coating can be adopted, and construction is convenient; the carbon nanotubes are used as a reinforcing phase of the coating, and a jet flow homogenizer is adopted, so that the carbon nanotubes can be uniformly dispersed in the coating, and the mechanical property of the coating is greatly improved. No chemical method is needed, the manufacturing time is saved, the cost is reduced, and the production period is obviously shortened.

Description

technical field [0001] The invention belongs to the technical field of explosion-proof material compositions, and in particular relates to an explosion-proof coating with convenient construction and a preparation method. Background technique [0002] In an explosion, the wall hit by shells, shrapnel or shock waves is the blast surface. If the above wall is a brick wall, the wall is prone to collapse after being shot. If the above wall is a concrete wall, the middle It is easy for the wall to peel off and the fragments to splash on the back blast surface after the bombing. At this time, due to the narrow space, especially in the fortifications, once there is a collapse or fragments are scattered, it is very easy to cause internal casualties. Therefore, it is necessary to strengthen the walls during the construction of civil air defense projects or fortifications, or to reinforce and transform the walls of existing civil air defense projects and fortifications to make them hav...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. Using chemical methods, the complex and time-consuming reaction process is not conducive to reducing costs, and is also not conducive to shortening the production cycle; Component B is mixed, and the gel time is greater than 3 hours, which cannot meet special requirements. For example, military explosion-proof materials require a gel time of 1.5-2 hours.

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