Macromolecule bonding agent and preparation method thereof

A technology of bonding agent and macromolecule, which is applied in the field of macromolecular bonding agent and its preparation, can solve the problems of large difference in polymerization reactivity ratio and difficult control of reaction, and achieve excellent mechanical properties and excellent bonding effect

Inactive Publication Date: 2013-03-20
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of NPBA neutral polymer bonding agent side chain nitrile group adsorption by steric hindrance, large difference in polymerization reactivity ratio, etc., the reaction is not easy to control, etc., the purpose of the present invention is to provide a kind of polymerization reaction that is easy to control, and the copolymer function Macromolecular bonding agent with strong adsorption force of chain link and preparation method thereof

Method used

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  • Macromolecule bonding agent and preparation method thereof
  • Macromolecule bonding agent and preparation method thereof
  • Macromolecule bonding agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The four-neck flask was equipped with mechanical stirring, reflux condenser, thermometer and addition funnel, and was cooled with ice water. First add 305 grams of aminoethanol and 980 grams of distilled water, and after cooling to 0-15°C, slowly add 583 grams of acrylonitrile dropwise. The reaction is exothermic, and the rate of addition is controlled so that the temperature of the reaction solution does not exceed 35°C. After the addition is complete, the reaction is continued with natural stirring for 6 hours.

[0035] After stopping the reaction, the reaction solution was transferred to a distillation apparatus, and water and unreacted raw materials were evaporated under reduced pressure at a temperature of 110° C. and a vacuum of 10 mmHg to obtain a total of 802.2 grams of crude product. The crude product was rectified at a temperature of 160°C and a vacuum of 2 to 3mmHg, and a total of 760.6 grams of colorless liquid intermediates with a boiling point of 152 to 15...

Embodiment 2

[0049] In a three-necked flask equipped with electromagnetic stirring, a reflux condenser, a thermometer and an addition funnel, add 630 g of ethyl acetate, 6.5 g of n-dodecanethiol, and 6.2 g of azobisisobutyronitrile, and stir to dissolve. The temperature was raised to 65 oC, and the above-mentioned mixed monomers were added dropwise, and the addition was completed in 30 minutes. After adding, keep warm at 75oC for 3h.

[0050] After the reaction was completed, the solvent was distilled off under reduced pressure at 60° C. and a vacuum of 10 mmHg, and the distillation time was such that no solvent distilled out. Finally, 610.2 g of the orange viscous macromolecular bonding agent product was obtained, with a yield of 98.3%.

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Abstract

The present invention discloses a macromolecule bonding agent and a preparation method thereof, and belongs to the technical field of chemical synthesis and propellant applications, wherein the obtained product can be adopted as a propellant bonding agent. According to the present invention, N,N-dicyanopropyl aminoethyl acrylate, methyl methacrylate, butyl acrylate and hydroxyethyl acrylate are subjected to copolymerization, wherein a copolymer function chain contains two cyanoalkyl groups, such that an absorption effect is strong; during product preparation, a reactivity ratio of the function monomer is close to reactivity ratios of other copolymerization monomers, such that the reaction is easily controlled; a good bonding effect can be achieved in propellant applications so as to provide a good mechanical property; and advantages of easily-obtained raw materials, easily-achieved preparation process and easy promotion and application are provided.

Description

technical field [0001] The invention relates to a macromolecule bonding agent and a preparation method thereof, belonging to the technical fields of chemical synthesis and propellant application. Background technique [0002] Composite solid propellant is a kind of energetic composite polymer material with polymer as matrix and solid particles as filler. There are many factors affecting its mechanical properties. Among them, ensuring the effective bonding of solid particles and binder interfaces is a necessary condition for composite solid propellants to obtain excellent mechanical properties. In order to improve the bonding strength between the oxidizer and the binder interface in the solid propellant, a few parts per thousand to a few parts per thousand of bonding agent is often added to the propellant formulation. These bonding agent molecules have the following three basic characteristics: (1) can gather on the surface of the solid particles filled in the propellant; (2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/34C08F220/14C08F220/18C08F220/28C08F4/34C08F4/04C07C255/24C07C253/30C06D5/00
Inventor 李战雄关晋平姜佳美沈玲
Owner SUZHOU UNIV
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