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Multi-center bonded neutral polymer bonding agent and preparation method thereof

A polymer and multi-center technology, applied in the direction of offensive equipment, compressed gas generation, non-explosive/non-thermal agent components, etc., can solve the problems of limited improvement in the mechanical properties of propellants, and achieve good industrial production prospects and preparation methods Simple, surface-enhancing effect

Inactive Publication Date: 2021-07-16
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the bonding agent prepared by the invention improves the "dehumidification" phenomenon of the solid propellant to a certain extent, the improvement of the mechanical properties of the propellant is still limited, and it is not suitable for the propellant system of various oxidant fillers. Therefore, the research and development of the oxidant The integrated bonding agent with multi-center bonding of fillers has a certain reference value for the efficient utilization of propellants

Method used

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  • Multi-center bonded neutral polymer bonding agent and preparation method thereof
  • Multi-center bonded neutral polymer bonding agent and preparation method thereof
  • Multi-center bonded neutral polymer bonding agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of multi-center bonded neutral polymer bonding agent, its chemical structural formula is:

[0037]

[0038] The preparation method of above-mentioned bonding agent, comprises the following steps:

[0039] (1) By the weight of each unit, 28g acrylonitrile, 7g amino compound monomer, 8g hydroxyethyl acrylate are mixed to obtain mixed monomer, wherein the preparation steps of amino compound monomer are as follows:

[0040] 48.0g methyl methacrylate, 17.8g dimethylaminoethanol, 60ml n-hexane, 1.44g lithium hydroxide, 0.05g p-hydroxyanisole, react in a water bath at 70°C for 8 hours, and depressurize at 10mmHg and 80°C to obtain amino monomer;

[0041] (2) By weight, add 1.72g of azobisisobutyronitrile, 1.63g of β-mercaptoethanol, and 80ml of acetone into the reactor, stir and dissolve to obtain a mixed solution;

[0042] (3) Heating the mixed solution to 65°C, stirring at a speed of 300r / min, and reacting for 6 hours;

[0043] (4) Add the reaction solution in s...

Embodiment 2

[0047] A kind of multi-center bonded neutral polymer bonding agent, its chemical structural formula is:

[0048]

[0049] The preparation method of above-mentioned bonding agent, comprises the following steps:

[0050] (1) By the weight of each unit, 28g acrylonitrile, 7g organic borate monomer, 8g hydroxyethyl acrylate are mixed to obtain mixed monomer, wherein the preparation steps of organic borate monomer are as follows:

[0051] Mix 46.0g n-butyl borate and 16.2g propylene glycol and heat up to 95°C. Distill under reduced pressure until no more liquid flows out. After 1 hour, add 25.52g hydroxyethyl acrylate and 0.05g p-hydroxyanisole, and continue to distill under reduced pressure to No fractions, resulting in organoborate monomers;

[0052] (2) By weight, add 1.72g of azobisisobutyronitrile, 1.63g of β-mercaptoethanol, and 80ml of acetone into the reactor, stir and dissolve to obtain a mixed solution;

[0053] (3) Heating the mixed solution to 65°C, stirring at a spe...

Embodiment 3

[0058] A kind of multi-center bonded neutral polymer bonding agent, its chemical structural formula is:

[0059]

[0060] The preparation method of above-mentioned bonding agent, comprises the following steps:

[0061] (1) By the weight of each unit, 28g acrylonitrile, 7g 3-allylhydantoin monomer, and 8g hydroxyethyl acrylate are mixed to obtain a mixed monomer, wherein the preparation of 3-allylhydantoin monomer Proceed as follows:

[0062] Mix 80ml of methanol, 200ml of distilled water, 22.44g of potassium hydroxide, and 40.03g of hydantoin, heat up to 60°C, keep stirring for 0.5h, then add 48.40g of 3-bromopropene dropwise, react at 60°C for 4h, and spin evaporate the reaction solution to obtain crude The product was recrystallized twice with n-hexane, and 3-allylhydantoin monomer was obtained after suction filtration;

[0063] (2) By weight, add 1.72g of azobisisobutyronitrile, 1.63g of β-mercaptoethanol, and 80ml of acetone into the reactor and stir to dissolve to ob...

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Abstract

The invention discloses a multi-center bonded neutral polymer bonding agent and a preparation method thereof. The structure of the macromolecular bonding agent is shown in the specification, wherein R is an amino monomer or an organic boric acid ester monomer or a 3-allyl hydantoin monomer. The method comprises the following steps: by taking acetone as a solvent and azodiisobutyronitrile as an initiator, initiating polymerization between monomers which can be bonded with two oxidant fillers, washing with ethanol, and drying to obtain a bonding agent sample. The neutral polymer bonding agent is suitable for a solid propellant system filled with an ammonium perchlorate oxidizing agent and an ammonium nitrate oxidizing agent. Due to the fact that the bonding agent has a multi-center bonding effect on the oxidant filler, the bonding agent has a good bonding effect with the two oxidant fillers, the mechanical property of a solid propellant system is improved, the preparation process is simple, the molecular weight is easy to control, and the application and popularization value is good.

Description

technical field [0001] The invention relates to the technical field of solid propellants, in particular to a neutral polymer bonding agent with improved mechanical properties of solid propellants and multi-center bonded oxidant fillers and its preparation. Background technique [0002] In the process of continuous pursuit of high energy in solid propellants, oxidant particles are added to it, such as ammonium perchlorate (AP), RDX, octokin (HMX), etc., but some fillers have smooth surfaces and groups It is inert and cannot be well connected with the adhesive. When subjected to external loads, the filler and the matrix will be separated, and the phenomenon of "dehumidification" will appear. In order to solve the above problems, a bonding agent with an amphiphilic structure is added to the propellant, which can combine with the matrix while physically and chemically reacting with the filler, thereby enhancing the interfacial adhesion between the two and improving the propulsio...

Claims

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Application Information

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IPC IPC(8): C08F220/48C08F220/20C08F220/34C08F226/06C08F220/44C08F230/06C06B23/00C06B31/28C06D5/06
CPCC08F220/48C08F220/44C06B23/009C06B31/28C06D5/06
Inventor 刘锋李文科
Owner ZHENGZHOU UNIV
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