Hygroscopic catalyst and preparation method thereof

A catalyst and hygroscopic technology, applied in the field of hygroscopic catalyst and its preparation, can solve the problems of low bonding performance and strength, low production efficiency, long production cycle, etc., and achieve good storage performance, improved mechanical properties, and increased elongation. Effect

Active Publication Date: 2012-10-17
SHAANXI ZHONGTIAN ROCKET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of low bonding performance and strength, long production cycle, low production efficiency and hygroscopic deterioration in production in the prior art, the present invention proposes a hygroscopic catalyst and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] This embodiment is a kind of hygroscopicity catalyst, comprises the hydroxyl-terminated polybutadiene that mass ratio is respectively 20%, the magnesium powder of 10%, the potassium chloride of 10%, the calcium chloride of 3%, the lithium carbonate of 2% , 55% potassium perchlorate.

[0014] Its preparation process comprises the following steps:

[0015] The first step is to preheat the temperature of the mixing pot to 40°C and keep it at a constant temperature. Weigh the hydroxyl-terminated polybutadiene, magnesium powder, potassium chloride, calcium chloride, and lithium carbonate in proportion and pour them into the mixing pot for 3 minutes. A mixed slurry is obtained.

[0016] In the second step, divide the required potassium perchlorate into 2 parts, add one part to the slurry obtained in the first step and mix for 5 minutes, then add another part of potassium perchlorate and mix for 5 minutes; add toluene diisocyanate and mix for 30 minutes Minute discharge; the...

Embodiment 2

[0019] This embodiment is a kind of warm cloud catalyst, comprising the hydroxyl-terminated polybutadiene of 15%, the magnesium powder of 8%, the sodium chloride of 5%, the calcium chloride of 5%, the potassium carbonate of 2% respectively by mass ratio , 65% sodium perchlorate.

[0020] Its preparation process comprises the following steps:

[0021] The first step is to preheat the temperature of the mixing pot to 45°C and keep it at a constant temperature. Weigh the hydroxyl-terminated polybutadiene, magnesium powder, sodium chloride, calcium chloride, and potassium carbonate in proportion and pour them into the mixer for 3 minutes. A mixed slurry is obtained.

[0022] In the second step, divide the required sodium perchlorate into 2 parts, add one part to the slurry and mix for 5 minutes; then add another part of sodium perchlorate and mix for 5 minutes; add toluene diisocyanate and mix for 35 minutes Minute discharge; the addition of toluene diisocyanate is 1 / 14 of the m...

Embodiment 3

[0025] This embodiment is a kind of hygroscopicity catalyst, comprises the hydroxyl-terminated polybutadiene that mass ratio is respectively 10%, the magnesium powder of 5%, the calcium chloride of 8%, the potassium chloride of 5.5%, the sodium carbonate of 1.5% , 70% calcium perchlorate.

[0026] Its preparation process comprises the following steps:

[0027] The first step is to preheat the temperature of the mixing pot to 50°C and maintain a constant temperature. Weigh the hydroxyl-terminated polybutadiene, magnesium powder, calcium chloride, potassium chloride, and sodium carbonate in proportion and pour them into the mixer for 5 minutes. A mixed slurry is obtained.

[0028] In the second step, divide the required calcium perchlorate into 3 parts, add one part to the slurry obtained in the first step and mix for 5 minutes, then add the second part of calcium perchlorate and mix for 5 minutes, and finally add the third part part, that is, the remaining 1 / 3 of calcium perc...

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PUM

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Abstract

The invention discloses a hygroscopic catalyst and a preparation method thereof. The hygroscopic catalyst comprises an oxidant, an incendiary agent, chloride and carbonate; 10 to 20 mass percent of liquid rubber is taken as an adhesive; toluene diisocynate is added to serve as a curing agent; and the content of the curing agent is 1 / 15 to 1 / 13 of the using amount of the adhesive. The method comprises the following steps of: putting the chloride, the incendiary agent, the carbonate and the adhesive into a kneading machine, mixing uniformly, adding the oxidant at intervals, mixing uniformly, adding the curing agent for mixing, vacuum-pouring or extruding and squeezing mixed materials into a shell, and performing high-temperature curing in a drying oven to obtain a finished product. Various ingredients of the hygroscopic catalyst produced by adopting a pouring production process are difficult to damp and deteriorate due to the crosslinking coating effect of the liquid rubber adhesive, sothe performance of the product is guaranteed. Moreover, the catalyst has high bonding strength, and cannot break due to the vibration. By the method, a production process is simplified, production period is shortened, the mechanical sensitivity of the catalyst is reduced, and the safety of the catalyst is improved.

Description

technical field [0001] The invention belongs to the technical field of catalysts for artificial weather modification, in particular to a hygroscopic catalyst and a preparation method thereof. Background technique [0002] At present, the catalysts used for weather modification in my country are basically AgI catalysts, and AgI is a cold cloud catalyst, which can only work on clouds with a temperature below 0°C, and the maximum effect can be exerted when the temperature is below -10°C. In summer, convective warm clouds (clouds with a temperature higher than 0°C) account for more than 50% of the total precipitation in summer in my country. The thickness of warm clouds in summer in northern China is 3-5 km, and it can reach more than 5-6 km in southern China. Great water potential. For the catalysis of warm clouds, our country used to sow hygroscopic substances such as salt, urea, and cement by airplanes, but these substances are highly corrosive and harmful to airplanes and cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B33/06C06B21/00
Inventor 武玉忠陈跃陈光学薛蔚高新建邱冬磊樊艳萍高超峰梁琼孙巨川王金华苏选强王俊惠李念
Owner SHAANXI ZHONGTIAN ROCKET TECH CO LTD
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