Large-sized curved surface revolving body heat-insulation material forming temperature control device and method

Abstract

The invention relates to a large-sized curved surface revolving body heat-insulation material forming temperature control device and method. The method comprises the steps that when gas parameters exceed a set range during heating or drying, four air inlets which are uniformly arranged are opened to introduce inert gas, and a vacuum system is opened for air exhaust until the gas parameters are normal; and after monitored temperatures exceed a set threshold, two symmetrically arranged planning air inlets are opened to introduce inert gas with a temperature below the room temperature to achieveoxygen-insulation cooling. The large-sized curved surface revolving body heat-insulation material forming temperature control device and method solve the high temperature anomaly control problem of integral forming of a heat-insulation material which is of a large-sized curved surface revolving body structure, and avoids a resin implosion reaction, a resin high temperature failure and a resin temperature abnormal reaction failure, the control technology is simple to operate, parameters are controllable, and the large-sized curved surface revolving body heat-insulation material forming temperature control device and method are easy to implement.

Description

technical field [0001] The invention belongs to a method for forming a low-density heat-insulating material with a low-density three-dimensional fiber structure as a reinforcing phase, relates to a temperature control device and method for a large-sized, curved-surface rotary structure heat-proof material, and belongs to the field of heat protection. Background technique [0002] During the return and reentry process, the returnable spacecraft needs to experience high heat flow erosion, and the thermal protection system on the outer surface of the return aircraft is very important. With the continuous development of deep space exploration technology, returnable spacecraft has higher requirements for lightweight thermal protection system, surface structure stability and integrity. Integral molding of heat-resistant insulation materials with large size and complex configuration is a trend in the development of thermal protection systems. The typical characteristics of the per...

AI Technical Summary

Problems solved by technology

The heating time of the large-scale integral molding anti-insulation material is longer, and the low thermal conductivity and high specific heat capacity of the material cause the internal heat dissipation of the material to be slower, which may cause implosion during the resin reaction process; or cause local heat accumulation to form high temperature, resulting in resin failure or resin reaction failure

At the same time, the large curvature rotary structure configuration is more unfavorable for heat flow

[0003] Based on the above analysis, one of the key problems to be solved in the overall molding of anti-insulation materials is the risk of implosion and resin failure caused by the overall molding process due to thermal insulation performance, long-term heating, and configuration characteristics.

Images