Unlock instant, AI-driven research and patent intelligence for your innovation.

Geopolymer-based composite material, preparation method thereof and application of geopolymer-based composite material in aircraft heat-proof structure

A technology of geopolymers and composite materials, which is applied in the field of thermal protection materials preparation, can solve the problems of low energy consumption, mechanical strength and toughness that are difficult to meet the thermal protection structure of aircraft, etc., and achieve good mechanical properties and controllable microscopic surface morphology , The effect of improving mechanical properties

Active Publication Date: 2022-07-29
CENT SOUTH UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]Geopolymers generally have low density, light weight, excellent mechanical properties, strong interfacial bonding ability, good high temperature resistance and heat insulation effect, good corrosion resistance and durability, early strength It has excellent characteristics such as fast formation and low energy consumption for preparation, but its mechanical strength and toughness are difficult to meet the application requirements of aircraft thermal protection structures. At present, there are no reports on the synthesis of geopolymer-based composites that meet aircraft thermal protection structures.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Geopolymer-based composite material, preparation method thereof and application of geopolymer-based composite material in aircraft heat-proof structure
  • Geopolymer-based composite material, preparation method thereof and application of geopolymer-based composite material in aircraft heat-proof structure
  • Geopolymer-based composite material, preparation method thereof and application of geopolymer-based composite material in aircraft heat-proof structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0056] (1) Preparation of geopolymer-based composite materials: Weigh a certain amount of filler, flux and alkaline activator fly ash and alkaline activator to meet the molar ratio Si:Al:Na=1:1:1 and the mass percentage composition of fly ash, filler and flux in the reaction system is 70-85%: 5-20%: 5-10%. After mixing, the cross-linking reaction is carried out in situ at room temperature, and then it is dried at a constant temperature, and then sintered at a high temperature. The time for cross-linking reaction is 1~2h; the temperature of constant temperature drying treatment is 60℃~80℃, and the time is 24h~36h; the temperature of high temperature sintering is 1200℃~1600℃, and the time is 1h~4h, and the sintering atmosphere is air atmosphere.

[0057] (2) Preparation of heat-proof components: The geopolymer-based composite material is hot-pressed and finally prepared into a specific required size for use in aircraft heat-proof components, and then wind tunnel tests are carri...

Embodiment 4

[0064] The difference from Example 2 is that the sintering temperature is 800°C. The SEM images of the prepared geopolymer matrix composites are as follows: figure 2 As shown, it is explained that when the sintering temperature is 800 °C, in-situ ceramization can only be achieved locally.

Embodiment 5

[0066] The difference from Example 2 is that the sintering temperature is 1400°C. The SEM images of the prepared geopolymer matrix composites are as follows: image 3 As shown, it is explained that when the sintering temperature is 1400 °C, complete in-situ ceramization can be achieved.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a geopolymer-based composite material, a preparation method thereof and application of the geopolymer-based composite material in a heat-proof structure of an aircraft. The preparation method comprises the following steps: uniformly mixing fly ash, a filler, a fluxing agent and an alkaline activator, and sequentially carrying out polymerization reaction, drying treatment and high-temperature sintering to obtain the geopolymer-based composite material. The geopolymer-based composite material has the advantages of low cost, good mechanical properties, light weight, stable high-temperature resistance and the like, and can replace traditional resin-based heat-proof materials such as phenolic resin, polyaryne and polyimide to be applied to heat-proof components of hypersonic aircrafts; the application requirements of novel aircrafts with high Mach, long-time flight, cross-atmosphere and the like are expected to be met, and the more harsh aerodynamic heat flow environment of the aircraft is met.

Description

technical field [0001] The invention relates to a geopolymer composite material, in particular to a geopolymer-based composite material with good mechanical properties, heat-proof properties and light weight, and also relates to a preparation method thereof and a geopolymer-based composite material as a high-temperature thermal The application of the protective material in the thermal protective structure of the aircraft belongs to the technical field of thermal protective material preparation. Background technique [0002] Traditional phenolic resin-based thermal protection materials are not only expensive, but also difficult to meet the harsh aerodynamic heat flow environment of aircraft. Therefore, the development of new resin-based thermal protection materials with low cost and high heat resistance has become a research hotspot. To maintain a good aerodynamic shape and attitude under high temperature heat flow, it is urgent to improve the anti-oxidation ability of heat-r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B33/135C04B33/13C04B33/32C04B33/36B64C1/00
CPCC04B33/1352C04B33/32C04B33/36C04B33/131B64C1/00B64C2001/0072C04B2235/3826C04B2235/3873C04B2235/386C04B2235/3418C04B2235/36C04B2235/522C04B2235/5216C04B2235/656Y02P40/10
Inventor 胡海龙张帆姚冬旭曾宇平岳建岭罗世彬
Owner CENT SOUTH UNIV