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A preparation method of phosphorus-containing silicon hybrid nano-hydroxides that improve the application of epoxy resins under liquid oxygen

A technology of oxyhydroxide and epoxy resin solution, which is applied in the field of preparation of phosphorus-containing silicon hybrid nano-oxyhydroxide, can solve the problems of limited energy absorption and lower mechanical properties of the resin system, and achieve strong thermal decomposition ability and cost-effective products High, high thermal stability effect

Active Publication Date: 2020-10-09
ORDOS JUNSHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its energy absorption is limited, and it is generally necessary to add 30%-60% to the resin system to reduce the oxidation reaction inertness of the resin system, and too much filling will reduce the mechanical properties of the resin system

Method used

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  • A preparation method of phosphorus-containing silicon hybrid nano-hydroxides that improve the application of epoxy resins under liquid oxygen
  • A preparation method of phosphorus-containing silicon hybrid nano-hydroxides that improve the application of epoxy resins under liquid oxygen
  • A preparation method of phosphorus-containing silicon hybrid nano-hydroxides that improve the application of epoxy resins under liquid oxygen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Pour 1 mole of (3-oxiranylmethoxypropyl) trimethoxysilane and 1.1 moles of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide into a three-necked flask, Then it was dissolved with 350ml of ethanol, condensed and refluxed under nitrogen protection atmosphere, while heating and stirring, the heating temperature was 70°C, and the reaction time was 14h, and the reaction liquid was a clear and transparent solution. The mass (g / ml) of the product in the above ethanol liquid was then determined by evaporation of the solvent. Add 1.32 g of nano-flaky ferric oxyhydroxide and ethanol solution containing 2.90 g of the above product into a beaker, then add 33 ml of water, stir at room temperature for 5 h, finally add 3 ml of concentrated ammonia water, stir at room temperature for 12 h, and mix the obtained liquid with fiber The membrane was washed with water and suction filtered until the solution reached neutrality, and then the filter cake was dried at 90°C for 8 hours, and the ...

Embodiment 2

[0037]Pour 1 mole of (3-glycidoxypropyl) methyldimethoxysilane and 1 mole of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide into a three-necked flask , then dissolved in 350ml of toluene, condensed and refluxed under a nitrogen atmosphere, while heating and stirring, the heating temperature was 95°C, and the reaction time was 12h. The reaction liquid was a clear and transparent solution. The mass (g / ml) of the product in the above toluene liquid was then determined by evaporation of the solvent. Add 1.32 g of nano-acicular manganese oxyhydroxide and toluene solution containing 5.28 g of the above product into a beaker, then add 40 ml of water, stir at room temperature for 7 hours, finally add 7 ml of concentrated ammonia water, and stir at room temperature for 18 hours. The membrane was washed with water and suction filtered until the solution reached neutrality, and then the filter cake was dried at 90°C for 8 hours, and the obtained powder was the target product containi...

Embodiment 3

[0040] 1 mole of (3-oxiranylmethoxypropyl) trimethoxysilane and 0.9 moles of 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene -10-Oxide was poured into a three-necked flask, then dissolved in 400ml of ethanol, condensed and refluxed under a nitrogen atmosphere, while heating and stirring, the heating temperature was 70°C, and the reaction time was 18h. The reaction liquid was a clear and transparent solution. The mass (g / ml) of the product in the above ethanol liquid was then determined by evaporation of the solvent. Add 1.32g of nano-spherical cobalt oxyhydroxide and ethanol solution containing 5.28g of the above product into a beaker, then add 35ml of water, stir at room temperature for 7h, finally add 10ml of concentrated ammonia water, stir at room temperature for 18h, and filter the obtained liquid with a fiber membrane Wash and filter with water until the solution reaches neutrality, then dry the filter cake at 90°C for 8 hours, and the obtained powder i...

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Abstract

The invention discloses a preparation method of phosphorus-silicon-containing hybrid nanometer oxyhydroxide for improving application of epoxy resin in liquid oxygen, and belongs to the field of preparation of engineering materials. The preparation method comprises the following steps: synthesizing a surface modifier containing phosphorus and silicon, then connecting to the surfaces of oxyhydroxide particles by generating hydrolytic condensation between a hydrolysis group in the surface modifier and hydroxyl on the surface of oxyhydroxide to form an organic reaction group. When epoxy resin soaked in the liquid oxygen is impacted, oxyhydroxide added to the resin can absorb a part of energy to decompose into a steady oxide, which is covered on the surface of the resin, so as to isolate contact of the resin with the liquid oxygen; due to introduction of phosphorus and silicon elements, free radicals generated by decomposition of the resin can be timely captured to form a carbon layer, soas to inhibit further contact reaction of the free radicals and the liquid oxygen; organic groups on the surface of the oxyhydroxide can effectively improve the dispersibility of the oxyhydroxide in an epoxy resin system, so as to effectively improve the compatibility and the low temperature mechanical property of the resin system and the liquid oxygen.

Description

technical field [0001] The invention relates to a method for preparing a phosphorus-containing silicon hybrid nano-oxyhydroxide that improves the application of epoxy resin under liquid oxygen, and belongs to the field of engineering material preparation. As a new phosphorus-containing silicon nano-additive, it can be added to epoxy resin to improve its Liquid oxygen compatibility and low temperature mechanical properties. Background technique [0002] In recent years, with the intensification of international competition in the aerospace field, lightweight and high-strength components are gradually used in various parts of aircraft to reduce their own weight and improve the carrying capacity of spacecraft. Among them, the weight reduction of propellant tanks is of great significance. The development of high specific strength, Light tanks with high specific modulus become the main direction. At present, the United States has developed a polymer-based composite material type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/549C08L63/00
CPCC08K5/549C08L63/00
Inventor 王宏宇武湛君孙涛陈铎高畅
Owner ORDOS JUNSHI TECH
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