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

Al/Cu2O/PFPE composite energetic material with high reaction activity and preparation method thereof

A high-reactivity, cu2o1% technology, applied in metal processing equipment, explosives, transportation and packaging, etc., can solve the problem of weakening the effect of PFPE, which has not been seen, to achieve rapid volatilization, improve reactivity and combustion efficiency, and produce low cost effect

Inactive Publication Date: 2022-04-12
SHANGHAI JIAOTONG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This indicates that Al is more inclined to react with CuO to form Al 2 o 3 , thereby weakening the role of PFPE in the PIR
[0006] In addition, although current research on Al / Cu 2 Related research reports on O thermite system (Egan G C, Sullivan KT, Olson TY, et al.Journal of Physical Chemistry C, 2016, 120(51):29023-29029), but no bifunctional Al / Cu 2 Related reports on O / PFPE composite energetic materials

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
  • Al/Cu2O/PFPE composite energetic material with high reaction activity and preparation method thereof
  • Al/Cu2O/PFPE composite energetic material with high reaction activity and preparation method thereof
  • Al/Cu2O/PFPE composite energetic material with high reaction activity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take 10g of PFPE, dissolve in 100mL of perfluoropolyether oligomer fluid, and stir at room temperature for 10min to obtain a PFPE solution. Take 70g aluminum powder, 20g Cu 2 O was mixed in PFPE solution and ball milled at 200rpm for 2h. The obtained sample is taken out and placed in a fume hood to dry until the liquid perfluoropolyether oligomer solvent is completely volatilized to obtain Al / Cu 2 O / PFPE composite energetic material.

[0042] figure 1 is the prepared Al / Cu 2 The SEM picture of O / PFPE composite energetic material, it can be seen from the picture that the particle size of aluminum powder is different, Cu 2 O is an irregular polyhedron distributed around the aluminum powder.

[0043] figure 2 For the prepared Al / Cu 2EDS element distribution map of O / PFPE composite energetic material, from which it can be seen that PFPE is well coated on Al and Cu 2 O surface.

[0044] image 3 Al / Cu 2 Infrared spectra of O / PFPE and PFPE. It can be seen from th...

Embodiment 2

[0048] Take 10 g of perfluoropolyether (PFPE), dissolve it in 100 mL of perfluoropolyether oligomer fluid, and stir at room temperature for 10 min to obtain a PFPE solution. Take 80g aluminum powder, 10gCu 2 O was mixed in PFPE solution and ball milled at 500rpm for 4h. The obtained sample is taken out and placed in a fume hood to dry until the liquid perfluoropolyether solvent is completely volatilized to obtain Al / Cu 2 O / PFPE composite energetic material.

Embodiment 3

[0050] Take 10 g of perfluoropolyether (PFPE), dissolve it in 100 mL of perfluoropolyether oligomer fluid, and stir at room temperature for 10 min to obtain a PFPE solution. Take 80g aluminum powder, 10gCu 2 O was mixed in PFPE solution and ball milled at 200rpm for 1h. The obtained sample is taken out and placed in a fume hood to dry until the liquid perfluoropolyether solvent is completely volatilized to obtain Al / Cu 2 O / PFPE composite energetic material.

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 high-reactivity Al / Cu2O / PFPE composite energetic material and a preparation method thereof, and relates to the technical field of composite energetic materials, the high-reactivity Al / Cu2O / PFPE composite energetic material comprises the following components by weight: 60%-90% of Al; 1%-20% of Cu2O; 5% to 15% of PFPE; the sum of the mass percentage contents of the Al, the Cu2O and the PFPE is 100%; the grain sizes of the Al are different; the Cu2O is an irregular polyhedron and is distributed on the periphery of the Al; the PFPE is coated on the surfaces of the Al and the Cu2O. The preparation method comprises the following steps: dissolving PFPE in a good solvent, and stirring to prepare a PFPE solution; dispersing Al powder and Cu2O powder in different proportions in a PFPE solution, and carrying out ball milling to prepare an Al / Cu2O suspension; and transferring the Al / Cu2O suspension into a fuming cupboard, and preparing the Al / Cu2O / PFPE composite energetic material after the good solvent is completely volatilized. The Al / Cu2O / PFPE composite energetic material prepared by the invention has the characteristics of strong reaction activity and large exothermic peak area. The preparation method is simple, low in production cost, environment-friendly and suitable for industrial production.

Description

[0001] The application date is September 11, 2019, the application number is 201910858318.6, and the invention name is "A kind of Al / Cu 2 Divisional application of O / PFPE composite energetic material and its preparation method. technical field [0002] The invention relates to the technical field of composite energetic materials, in particular to a highly reactive Al / Cu 2 O / PFPE composite energetic material and its preparation method. Background technique [0003] As an energetic material, aluminum powder is widely used as an additive in propellants due to its high combustion enthalpy and low oxygen consumption. However, due to the strong reducibility of aluminum, the surface of aluminum powder will be rapidly oxidized in the air to form a dense aluminum oxide protective layer, thereby reducing the reactivity of aluminum powder. Moreover, the aluminum powder currently used is easy to fuse with each other on the combustion surface to form condensed droplets during the combu...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/02B22F1/102B22F9/04
CPCC22C21/00C22C1/051B22F9/04B22F2009/043B22F1/16
Inventor 宋雪峰刘继宁
Owner SHANGHAI JIAOTONG UNIV