Preparation and application method of volume-expandable solid buoyancy material

Abstract

The invention provides a preparation and application method of a volume-expandable solid buoyancy material. The preparation and application method of the volume-expandable solid buoyancy material comprises the following steps adding epoxy resin, a curing agent, a catalyst, a thixotropic agent and a silane coupling agent in a high-speed stirrer, carrying out dispersion at high speed and uniformly stirring; adding light packing in 5-10 times, dispersing the components by using a high-speed disperser, and adjusting the volume expansion degree through the type and use amount of the light packing;pouring a pouring material which is dispersed uniformly in a vacuum defoaming barrel, opening a vacuum pump, enabling the vacuum degree in the vacuum defoaming barrel to reach minus 0.1 MPa, and maintaining for 5-10 min; and placing the material in a mold or a filling portion and carrying out heating and curing. The volume-expandable solid buoyancy material is placed in the mold or the filling portion, and is heated and cured. The buoyancy material prepared by the method is controllable in density and low in water absorption, is controllable in volume expansion in a curing process, and can beused for manufacturing some marine equipment with complicated structure and difficulty in filling such as submersible vehicles in deep sea, moreover, the production method is simple, and the cost is low.

Description

technical field [0001] The invention relates to a preparation method of a solid buoyancy material, and also relates to an application method of the solid buoyancy material. Background technique [0002] The deep sea contains rich mineral deposits and biological resources. Deep sea exploration and development has become an important frontier and focus of marine technology development in the 21st century. Deep-sea ocean development is inseparable from deep-sea equipment. For deep-sea equipment, high-strength epoxy-based solid buoyancy materials used for buoyancy compensation are one of the most important universal materials. The high pressure resistance, low density and low water absorption of buoyant materials are the key to current deep sea technology. At present, the traditional solid buoyancy material preparation method is as follows: after the matrix resin is mixed with light filler, it is poured into a mold, heated and solidified, and after the buoyancy material is soli...

AI Technical Summary

Problems solved by technology

In this application method, the solid buoyancy material will inevitably shrink in volume during the curing process, and the overall size will become smaller. The shrinkage rate is generally between 0.1% and 2%, which will affect the application effect.