Storage device for resisting large overload impact and preparation method thereof

Abstract

The invention discloses a storage device for resisting large overload impact and a preparation method thereof, a memory device include a memory board, an inner housing, a first potting glue, second potting glue, outer shell, inner cover plate and outer cover plate, The inner shell is a hollow shell, which forms a first hollow cavity after being covered by the inner cover plate, the storage plate is accommodated in the first hollow cavity, and the first potting colloid is filled in the first hollow cavity and filled with the remaining voids of the first hollow cavity, so as to wrap the storageplate tightly; The outer shell is a hollow shell, which is sealed by the outer cover plate to form a second hollow cavity, the inner shell and the inner cover plate covering the storage plate are integrally accommodated in the second hollow cavity, as that second potting glue is filled in the second hollow cavity and filled with the remaining voids of the second hollow cavity, the inn shell and the inner cover plate are integrally wrapped tightly, the impact resistance of the storage device is greatly improved, and the reliability of the storage device can still be guaranteed in a high overload impact environment. The second potting glue is arranged in the second hollow cavity and filled with the remaining voids of the second hollow cavity, so that the inner shell and the inner cover plateare integrally wrapped tightly.

Description

technical field [0001] The invention belongs to the field of storage devices, and in particular relates to a storage device capable of resisting large overload shocks and a preparation method thereof. Background technique [0002] The data storage device in the missile control system is used to record missile telemetry signals and flight data. When the carrier equipped with the data storage device falls from a high altitude at a high speed, the data storage device will pass through a very complex dynamic environment, which will generate high Intensity instantaneous impact, overload peak value can reach tens of thousands of g. Therefore, the core of the structural design of the data storage device of the carrier is to resist large overload shocks, so as to ensure that the reentry body can withstand multiple high-intensity instantaneous shocks and can still read data reliably. [0003] How to suspend the storage board in the data storage device in the casing of the data stora...

AI Technical Summary

Problems solved by technology

In harsh working environments, polyurethane potting materials not only have lower tensile strength and impact strength than epoxy resins, but also have high viscosity, poor fluidity, fast curing time, and poor operability. Sealing materials are often difficult to meet the requirements

[0007] (3) Silicone rubber can maintain elasticity for a long time in a wide temperature range, does not absorb or release heat during vulcanization, and has excellent electrical properties and chemical stability, but silicone rubber has low strength and poor adhesion The disadvantages of silicone rubber, and the tensile strength and impact strength index of silicone rubber is low, it can not play the protective role of the core layer of the structure

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