Solid buoyancy material with high impact strength and preparation method thereof

Abstract

The invention discloses a solid buoyancy material with high impact strength and a preparation method thereof. The formula of the material is prepared from the following components in parts by weight: 100 parts of epoxy resin, 25-100 parts of hollow glass microspheres, 10-20 parts of a diluent, 50-80 parts of a curing agent, and 0.1-3 parts of a catalyst. The solid buoyancy material is characterized in that the hollow glass microspheres are grafted with polyether-ether-ketone on the surfaces by adopting surface-initiated condensation polymerization; the grafting content is 5-30% of mass of the hollow glass microspheres; the method for grafting the polyether-ether-ketone on the surfaces of the hollow glass microspheres comprises the following four processes: hydroxylation of the hollow glass microspheres, amination of the hollow glass microspheres, acyl chloride reaction of the hollow glass microspheres and condensation polymerization of the polyether-ether-ketone initiated by the surfaces of the hollow glass microspheres. Firstly, the polyether-ether-ketone is grafted on the surfaces of the hollow glass microspheres by surface-initiated condensation polymerization, and then added to an epoxy resin substrate, so that the dispersity and the compatibility of the hollow glass microspheres in the epoxy substrate are improved, and the shock resistance of the solid buoyancy material is improved.

Description

technical field [0001] The invention belongs to the technical field of functional non-metallic materials, in particular to a solid buoyancy material with high impact resistance strength and a preparation method thereof. Background technique [0002] In recent years, solid buoyant materials have been widely used in marine development equipment such as offshore drilling platforms, oil production risers and underwater operating submersibles. As humans explore the underwater world and dive deeper and deeper, the compressive strength of the prepared solid buoyant materials is also getting higher and higher, thus ensuring the safe use of deep-water equipment. However, solid buoyant materials are easily damaged by collisions and impacts during handling, installation and use after production, so it is very important to improve the impact resistance of solid buoyant materials. [0003] The solid buoyant materials reported so far are usually prepared by filling thermosetting resin wi...

AI Technical Summary

Problems solved by technology

Although the buoyant materials reported in these patents have high compressive strength, they have low impact resistance

Chinese patent CN200610043524.4 improves the impact resistance of the material by adding a toughening modifier (such as polysulfide rubber liquid or nitrile rubber), but the added rubber material will reduce the compression resistance of the material; Chinese patent CN201210067359. 1 The impact resistance of the material is improved by adding thermoplastic engineering plastics (such as polyether ether ketone, polysulfone or polyphenylene sulfide, etc.), but the process of adding thermoplastics is simple mechanical blending, which is difficult to make it uniform Dispersion, and the glass microspheres used in this patent are only treated with simple silane, and their dispersion and compatibility in the epoxy matrix cannot be significantly improved, which makes it easy to produce defects in the material, making the overall quality of the material The impact strength is not high, which limits its use on large marine deepwater equipment

After literature search, there is no report about this technical solution

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