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Molecular sieve composite material for heat insulation air bottle and preparation method

A composite material and molecular sieve technology, which is applied in the field of molecular sieve composite materials for insulating gas cylinders and its preparation, and can solve the problems of substandard air tightness of thermal insulating gas cylinders.

Inactive Publication Date: 2018-03-09
芜湖瑞德机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the welding process has been continuously improved in the prior art, there are still situations where the airtightness of the insulating gas cylinder does not meet the standard after being used for a period of time

Method used

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  • Molecular sieve composite material for heat insulation air bottle and preparation method

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preparation example Construction

[0013] The invention provides a method for preparing a molecular sieve composite material for insulating gas cylinders, comprising:

[0014] 1) Molecular sieves, hydrochloric acid, and sodium dodecylbenzenesulfonate are activated to obtain an activation system;

[0015] 2) Add magnesium source, palladium source, neodymium oxide, dysprosium oxide, butyllithium, urea, and sodium borohydride to the activation system for hydrothermal reaction, then filter and dry to obtain a cured product;

[0016] 3) The cured product is ball-milled to obtain a molecular sieve composite material for insulating gas cylinders.

[0017] In step 1) of the present invention, the amount of each material can be selected within a wide range, but in order to make the prepared molecular sieve composite material have more excellent hydrogen absorption capacity, preferably, in step 1), molecular sieve, hydrochloric acid , the weight ratio of sodium dodecylbenzenesulfonate is 10:2-3:0.2-0.5; and, the pH of t...

Embodiment 1

[0029] 1) Molecular sieve (average particle size is 0.3mm), hydrochloric acid, sodium dodecylbenzenesulfonate according to 10:2.5:0.4; and the pH of the hydrochloric acid is 5.5 for activation reaction (reaction temperature is 55 ℃, the reaction time is 5h) to prepare the activated system;

[0030] 2) Add magnesium source (magnesium acetate), palladium source (palladium nitrate), neodymium oxide, dysprosium oxide, butyllithium, urea, sodium borohydride to the activation system for hydrothermal reaction (in a closed environment, The reaction temperature is 210°C, the reaction time is 7h), and then filtered and dried (the drying temperature is 105°C, the drying time is 2.5h) to obtain a cured product (activation system, magnesium source, palladium source, neodymium oxide, dysprosium oxide, The weight ratio of butyllithium, urea and sodium borohydride is 100:20:5:0.3:0.4:0.12:7.5:20);

[0031] 3) Ball mill the cured product (the mass ratio of large balls to small balls is 2:1, t...

Embodiment 2

[0033] 1) Molecular sieve (average particle size is 0.2mm), hydrochloric acid, sodium dodecylbenzenesulfonate according to 10:2:0.2; and the pH of the hydrochloric acid is 5 for activation reaction (reaction temperature is 50 ℃, the reaction time is 4h) to prepare the activated system;

[0034] 2) Add magnesium source (magnesium nitrate), palladium source (palladium dichloride), neodymium oxide, dysprosium oxide, butyllithium, urea, sodium borohydride to the activation system for hydrothermal reaction (in a closed environment The reaction temperature is 200°C, the reaction time is 6h), and then filtered and dried (the drying temperature is 100°C, the drying time is 2h) to obtain the cured product (activation system, magnesium source, palladium source, neodymium oxide, dysprosium oxide , butyllithium, urea, and sodium borohydride in a weight ratio of 100:15:4:0.1:0.3:0.1:7:18);

[0035] 3) Ball mill the cured product (the mass ratio of large balls to small balls is 2:0.8, the ...

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Abstract

The invention discloses a molecular sieve composite material for a heat insulation air bottle and a preparation method. The preparation method comprises the following steps of (1) performing activating reaction on a molecular sieve, hydrochloric acid and sodium dodecyl benzene sulfonate, so as to obtain an activating system; (2) adding a magnesium source, a palladium source, neodymium oxide, dysprosium oxide, butyl lithium, urea and sodium borohydride into the activating system to perform hydrothermal reaction, filtering, and drying, so as to obtain a curing matter; (3) performing ball millingon the curing matter, so as to obtain the molecular sieve composite material for the heat insulation air cylinder. The molecular sieve composite material for the heat insulation air cylinder has theadvantage that the hydrogen can be effectively absorbed. The preparation method has the advantages that the procedures are simple, and the obtaining of the raw materials is easy.

Description

technical field [0001] The invention relates to a heat-insulating gas cylinder, in particular to a molecular sieve composite material for a heat-insulating gas cylinder and a preparation method thereof. Background technique [0002] The insulated gas cylinder is a device commonly used in existing industries or laboratories, and it is used to hold gases, such as liquefied gas, helium, nitrogen, hydrogen, etc. The most basic requirement of insulating gas cylinders is to have excellent airtightness and heat insulation performance, because the gas contained in it is either harmful to the environment or human body, or is flammable and explosive. No matter what kind of gas it is, once it is insulated Leakage of hot gas cylinders can cause immeasurable losses and damages. [0003] At present, the insulating gas cylinder is composed of an inner tank and an outer jacket. Whether it is the inner tank, the jacket itself, or the inner tank and the jacket, they are all assembled by wel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14F17C1/12
CPCB01D53/14B01D2252/40B01D2252/504B01D2257/108F17C1/12Y02E60/32
Inventor 李千林石宝军李刚
Owner 芜湖瑞德机械科技有限公司
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