Underwater resin matrix light high-strength composite material and preparation method thereof

Abstract

Provided are an underwater resin matrix light high-strength composite material and a preparation method thereof. The underwater resin matrix light high-strength composite material comprises the following components by weight: 80 to 100 parts of epoxy resin, 8 to 12 parts of curing agent, 5 to 20 parts of flexibilizer, 0 part to 5 parts of thinning agent, 1 part to 2 parts of coupling agent and 60 to 100 parts of cenosphere. The preparation method includes (1) adding the epoxy resin, the thinning agent and the flexibilizer into a reaction kettle, controlling temperature to be in a range from 60 to 80 DEG C and conducting pre-polymerization reaction for 30min to 60min; (2) adding the curing agent into a prepolymer in the reaction kettle to obtain resin glue solution; (3) conducting surface modification processing on the glass cenosphere through silane coupling agent; (4) adding the resin glue solution and the surface-modified glass cenosphere into a vacuum stirring machine to be mixed; (5) adding the mixed materials in the step4 into a three-roller mixing mill for mixing; (6) placing materials obtained in the step5 into a vacuum drying box for vacuum defoamation; and (7) pouring materials in the step6 into a mould for hot-pressing solidification formation. The underwater resin matrix light high-strength composite material is low in density, high in pressure resistant strength, simple in process and low in cost.

Description

technical field [0001] The invention relates to an underwater buoyancy material, in particular to an underwater resin-based lightweight high-strength composite material and a preparation method thereof. Background technique [0002] Since the 1950s, with the rapid development of economy and technology and the rapid growth of population in all countries in the world, the increasing demand for natural resources and the depletion of land resources have become the key contradictions restricting the future development of human beings. In order to alleviate this contradiction, people turn their attention to the ocean, which accounts for 70% of the total area of ​​the earth. The vast ocean is rich in natural resources. In the depths of the oceans around the world, there are oceanic polymetallic nodules containing more than 70 elements such as manganese, copper, cobalt, nickel, and iron. There are also cobalt-rich crust resources, There are abundant resources such as hydrothermal s...

AI Technical Summary

Problems solved by technology

In the mid-1980s, Harbin Ship Engineering School developed the first generation of buoyancy materials with a density of 0.55g / cm 3 Withstand pressure 6MPa; after 2000, Ocean Chemical Research Institute developed a density of 0.55g / cm 3 The buoyancy material with a pressure resistance of 50MPa, but so far, the density independently developed by our country is 0.7g / cm 3 The following buoyant materials with a compressive strength of 80MPa are still rarely reported. The contradiction and unity between the density and compressive strength of deep-water buoyant materials has always been a problem that domestic researchers have actively explored and focused on solving.

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