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Preparing process for antifungin crystal whisker

A technology of magnesium borate crystal whisker and preparation process, applied in the field of preparation of magnesium borate crystal whisker, can solve the problems of high cost, low yield, low purity and the like, and achieve the effects of low cost, high yield and high purity

Inactive Publication Date: 2004-12-08
青海海兴科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnesium borate product whisker that melting method obtains, quality is poor, purity is lower, yield is also low, and cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A kind of technique of preparing magnesium borate whisker: mix 145.5g magnesium chloride with 3.1g boric acid and 209.1g sodium chloride evenly, add appropriate amount of water and be mixed with slurry; after slurry stands for some time, through spray drying Make dry powder, then put the dry powder into a crucible, send it into a high-temperature reaction furnace, and sinter at a high temperature of 700°-1200°C for 1-50 hours, then immerse the sintered product obtained by sintering with water to obtain a suspension; The above suspension is filtered, washed and dried to obtain magnesium borate whiskers.

Embodiment 2

[0024] Embodiment 2: A kind of technique of preparing magnesium borate whisker: mix 145.5g magnesium chloride with 3.1g boric acid and 209.1g potassium chloride evenly, add appropriate amount of water to be mixed with slurry; after slurry stands for some time, through spray drying Make dry powder, then put the dry powder into a crucible, send it into a high-temperature reaction furnace, and sinter at a high temperature of 700°-1200°C for 1-50 hours, then immerse the sintered product obtained by sintering with water to obtain a suspension; The above suspension is filtered, washed and dried to obtain magnesium borate whiskers.

Embodiment 3

[0025] Embodiment 3: A kind of technique of preparing magnesium borate whisker: mix 145.5g magnesium chloride with 3.1g boric acid and 209.1g sodium chloride, sodium hydroxide, add appropriate amount of water and be mixed with slurry; , spray-dried to make dry powder, then put the dry powder into a crucible, send it into a high-temperature reaction furnace, and sinter at a high temperature of 700°-1200°C for 1-50 hours, and then immerse the sintered product in water to obtain Suspension: filtering, washing and drying the above suspension to obtain magnesium borate whiskers.

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Abstract

Whiskers of magnesium borate are prepared from magnesium chloride by: proportioning materials, sintering, dissolving and immersing, and drying. The products thereby are of high quality with large ratio of length-diameter, purity of 99.55%, yield percentage of 90%, and low cost due to rich resources in the Salt Lake. Its byproduct can be used to recover lithium salts so as to increase use ratio of resources and benefits.

Description

technical field [0001] The invention relates to a preparation process of magnesium borate whiskers. Background technique [0002] Whisker is a kind of fiber grown in the form of single crystal under artificial control, with a diameter of several microns and a length of tens of microns. It has the characteristics of large aspect ratio and no grain boundary. Due to this intrinsic integrity of the whiskers, their strength is not limited by the integrity of the surface and are very tough compared to single crystal fibers and glass. As a new type of whisker material, magnesium borate whisker has good mechanical properties (heat resistance, wear resistance, corrosion resistance, light weight, etc.), and is widely used in the fields of automobiles, plastics industry, and composite materials. [0003] At present, the preparation methods of magnesium borate whiskers mainly include the melting method, which uses magnesium oxide and boric acid as raw materials, and after uniform mixin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/62
Inventor 靳治良李武张治宏聂峰魏明雷亚川李中
Owner 青海海兴科技开发有限公司
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