Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultrahigh-temperature-resistant low-heat-conductivity magnesium-aluminum-chromium multivariate phosphate composite material and preparation method thereof

A technology of aluminum chromium phosphate and composite materials, which is applied in the field of thermal protection materials, can solve problems such as complex preparation process, complex composition, and limited high temperature resistance, and achieve simple preparation process, excellent comprehensive performance, and low equipment requirements Effect

Active Publication Date: 2022-07-08
CENT SOUTH UNIV
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two materials have two common disadvantages: one is that the preparation process is relatively complicated, and both require heat treatment; the other is that the high temperature resistance is limited, the highest is only 1500 °C
Chinese patent (publication number CN110105904A) discloses a sizing method of a 1500°C high-temperature adhesive, which uses chemical methods to improve phosphate to obtain a phosphate composite material that can withstand 1500°C, but its composition is complex and difficult to form. There are many uncontrollable factors in the process, and it still cannot adapt to the working environment above 2000 °C
In order to obtain a phosphate composite material with better high temperature resistance, the applicant made a lot of research in the early stage, and the aluminum lanthanide phosphate composite material prepared can withstand short-term ablation under 2000°C oxyacetylene flame, but the sample will be damaged after ablation. Cracks affect engineering applications, and it does not have the function of heat insulation

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
  • Ultrahigh-temperature-resistant low-heat-conductivity magnesium-aluminum-chromium multivariate phosphate composite material and preparation method thereof
  • Ultrahigh-temperature-resistant low-heat-conductivity magnesium-aluminum-chromium multivariate phosphate composite material and preparation method thereof
  • Ultrahigh-temperature-resistant low-heat-conductivity magnesium-aluminum-chromium multivariate phosphate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The 0.3mol / L aluminum phosphate solution and the 0.3mol / L chromium phosphate solution were heated and stirred in a constant temperature water bath at 90°C for 1 hour according to the volume ratio of 1:1, and the mixture was uniform. ·s of mixed phosphate solution. Then, deionized water was added to the mixed phosphate solution according to the mass ratio of 3:1, the temperature was maintained at 90 °C, and the aluminum-chromium phosphate solution with a viscosity of about 5 Pa·s was obtained after fully stirring for 1 h for dilution. Finally, MgO was weighed and mixed into the aluminum-chromium phosphate solution. Magnesium oxide was measured at 40% of the total mass of the composite material, and was continuously stirred at a rate of 3000 r / min for 20 minutes at room temperature until the color was light yellow, and then poured into the prepared In the mold, the aluminum-chromium-magnesium-based polyphosphate composite material was obtained after standing for 1 hour at...

Embodiment 2

[0056] The 0.3mol / L aluminum phosphate solution and the 0.3mol / L chromium phosphate solution were heated and stirred in a constant temperature water bath at 90°C for 1 hour according to the volume ratio of 1:1, and the mixture was uniform. ·s of mixed phosphate solution. Then, deionized water was added to the mixed phosphate solution at a mass ratio of 3:1, the temperature was maintained at 90 °C, and the solution was fully stirred for 1 h. After dilution, an aluminum-chromium phosphate solution with a viscosity of about 5 Pa·s was obtained. Finally, MgO was weighed and mixed into the aluminum-chromium phosphate solution. Magnesium oxide was measured at 50% of the total mass of the composite material, and was continuously stirred at a rate of 3000 r / min for 20 minutes at room temperature until the color was light yellow, and then poured into the prepared In the mold, the aluminum-chromium-magnesium-based polyphosphate composite material was obtained after standing for 1 hour a...

Embodiment 3

[0069] The 0.3mol / L aluminum phosphate solution and the 0.3mol / L chromium phosphate solution were heated and stirred in a constant temperature water bath at 90°C for 1 hour according to the volume ratio of 1:1, and the mixture was uniform. ·s of mixed phosphate solution. Then, deionized water was added to the mixed phosphate solution according to a mass ratio of 2:1, the temperature was maintained at 95 °C, and the mixture was fully stirred for 1 h. After dilution, an aluminum-chromium phosphate solution with a viscosity of about 3 Pa·s was obtained. Finally, MgO was weighed and mixed into the aluminum-chromium phosphate solution. Magnesium oxide was measured at 50% of the total mass of the composite material, and was continuously stirred at a rate of 3000 r / min for 20 minutes at room temperature until the color was light yellow, and then poured into the prepared In the mold, the aluminum-chromium-magnesium-based polyphosphate composite material was obtained after standing for...

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

PropertyMeasurementUnit
Viscosityaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ultrahigh-temperature-resistant low-heat-conductivity magnesium-aluminum-chromium multi-phosphate composite material and a preparation method thereof. The composite material is formed by dispersing and distributing magnesium oxide in a multivariate phosphate matrix, and the multivariate phosphate matrix is composed of phosphates including magnesium phosphate, aluminum phosphate and chromium phosphate. According to the composite material, respective advantages of the magnesium-aluminum-chromium phosphate and the high-melting-point magnesium oxide oxide are ingeniously utilized for combined design, synergistic interaction of the magnesium-aluminum-chromium phosphate and the high-melting-point magnesium oxide oxide is utilized, the magnesium-aluminum-chromium multi-phosphate composite material which can resist high temperature exceeding 2400 DEG C and has excellent heat insulation performance is obtained, and the preparation method is simple in process, low in raw material cost and suitable for industrial production. The large-scale industrial production is facilitated.

Description

technical field [0001] The invention relates to a thermal protection material, in particular to a magnesium-aluminum-chromium polyphosphate composite material with ultra-high temperature resistance and low thermal conductivity, and a preparation method thereof, belonging to the technical field of aerospace thermal protection material preparation. Background technique [0002] With the development of aerospace technology, the exploration of aerospace science has gradually spread to the wider solar system, which poses a challenge to the thermal protection system of the spacecraft. Insulation material is one of the key components in the thermal protection system, and it is an important guarantee for the normal operation of the electronic control system inside the spacecraft. Insulating materials prevent heat flow from being transferred to the interior of the aircraft through many complex chemical and physical reactions that melt or sublime in extreme environments. Insulation m...

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): C04B28/34C04B22/06
CPCC04B28/344C04B22/066C04B2111/763
Inventor 孙威湛紫章张帅帅
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com