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

A nepe propellant burning rate inhibitor

A propellant and inhibitor technology, applied in the field of amide organic compound type NEPE propellant burning rate inhibitor, can solve the problems of difficulty, low burning rate, narrow adjustable range of burning rate, etc., to reduce the burning rate, expand the Application field, the effect of expanding the adjustable range of burning rate

Active Publication Date: 2018-10-12
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inherent properties of nitrates and nitramines in NEPE propellants, the adjustable range of their burning rate is narrow, and it is difficult to achieve high energy and low burning rate at the same time
At present, the means of reducing the burning rate used by NEPE propellants, such as: reducing the plasticizing ratio, using coarse-grained oxidizers and other formula adjustment methods, have no obvious effect on reducing the speed, and will also affect the mechanical properties of the formula; adding an external speed reducer is a A more effective way to reduce the speed, but there are also problems affecting the overall performance of the formula, especially the storage performance

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
  • A nepe propellant burning rate inhibitor
  • A nepe propellant burning rate inhibitor
  • A nepe propellant burning rate inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The static burning rate of the propellant bar added with NEPE propellant burning rate inhibitor, the burning rate test method is the underwater acoustic emission method. Table 1 shows the composition of the NEPE propellant formula and the added burning rate inhibitor in the molecular formula R 1 , R 2 , R 3 The groups are 2-phenylbutyl, 2-phenylpropyl and ethyl, respectively. Table 1 shows the comparison of the energy performance, mechanical performance and storage performance of the propellant before and after adding the burning rate depressant. in FIG. 1 , , , are the maximum tensile strength of the propellant in uniaxial tension, the elongation corresponding to the maximum tensile strength, the elongation at break and the initial modulus, respectively. Table 2 and Table 3 show the changes in the burning rate when different amounts of the burning rate inhibitor are added.

[0020] Table 1 Performance comparison of a NEPE propellant before and after adding ...

Embodiment 2

[0023] The static burning rate of the propellant bar added with NEPE propellant burning rate inhibitor, the burning rate test method is the underwater acoustic emission method.

[0024] Table 2 Performance comparison of a NEPE propellant before and after adding burning rate inhibitor

[0025]

Embodiment 3

[0027] The static burning rate of the propellant bar added with NEPE propellant burning rate inhibitor, the burning rate test method is the underwater acoustic emission method.

[0028] Table 3 Performance comparison of a NEPE propellant before and after adding burning rate inhibitor

[0029]

[0030] It can be seen from Tables 1 to 3 that when the burning rate inhibitor is added in the NEPE propellant formula mentioned in this patent to 0.5%~2% of the mass fraction of the propellant formula, it can significantly reduce the propellant combustion rate. speed effect, and because its content is small, it has no obvious impact on the energy performance, mechanical performance and storage performance of the propellant, so the present invention has extremely strong practicability.

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 an NEPE propellant burning rate inhibitor and application of the NEPE propellant burning rate inhibitor in NEPE propellants. The burning rate inhibitor is an amide organic compound and is mainly used in NEPE solid propellant formulas with polyethylene glycol or ethylene oxide-tetrahydrofuran copolyether as a binder prepolymer, one or more types of nitroglycerin as a plasticizer, isocyanate as a curing agent, cyclotetramethylene tetranitramine / ammonium perchlorate or cyclotrimethylene trinitramine / ammonium perchlorate as an oxidizing agent and aluminite powder as a metal additive. The addition amount of the burning rate inhibitor in the NEPE solid propellant formulas is small, wherein the mass fraction of the burning rate inhibitor in the formulas ranges from 0.5% to 2%; the burning rate inhibitor can effectively reduce the burning rate of the propellants and is a novel burning rate inhibitor for achieving high energy and a low burning rate of the NEPE propellants.

Description

technical field [0001] The invention relates to an amide organic compound type NEPE propellant burning rate inhibitor. The burning rate inhibitor can effectively reduce the burning rate of the NEPE propellant and can be used as a burning rate inhibitor of the high energy and low burning rate NEPE propellant. Background technique [0002] NEPE propellant is a new type of high-energy solid propellant developed in the 1980s. It combines the excellent properties of modified double-base and composite propellants. One of the best performing propellants. The United States has applied NEPE propellants to engines such as "MX" and "Trident-II" to realize the miniaturization of strategic missiles. At present, in order to improve the overall performance level of weapon systems, many domestic tactical background models such as air defense and anti-missile missiles, kinetic energy interception weapons, long-range rockets, and medium- and short-range air-to-air missiles all require the us...

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 Patents(China)
IPC IPC(8): C06D5/00C06B23/00
Inventor 杨根卢艳华彭松池旭辉尹欣梅汪越常华封学华朱学珍
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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