Silica with high fluidity and high oil absorption value for washing powder and preparation method thereof

A silicon dioxide, high fluidity technology, applied in the direction of silica, silicon oxide, chemical instruments and methods, etc., can solve the problems of high cost, complicated preparation process, poor fluidity, etc., achieve high oil absorption value and simplify the preparation process , the effect of reducing production costs
CN110395740AActive Publication Date: 2019-11-01GUANGZHOU FEIXUE MATERIAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU FEIXUE MATERIAL TECH
Publication Date
2019-11-01

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Abstract

The invention belongs to the technical field of silica preparation, and particularly relates to silica with high fluidity and high oil absorption value for washing powder and a preparation method thereof. The preparation method of silica comprises the following steps: S1, adding water into a reaction kettle, adding a sulfuric acid solution under stirring, performing heating, dropwise adding a sodium silicate solution until a pH value is 3.5-4.5, then simultaneously dropwise adding the sodium silicate solution and the sulfuric acid solution to carry out a cocurrent neutralization reaction, controlling a pH value to be 3.0-5.0, simultaneously stopping addition of the sulfuric acid solution when drop addition of the sodium silicate solution is completed, and further performing stirring; S2, continuously adding the sodium silicate solution, stopping drop addition of the sodium silicate solution when a pH value is 7.0-8.0, and performing maturing; and S3, performing pressure filtration andwashing on the formed silica, and performing spray drying treatment to obtain the silica. The silica has uniform particle size distribution, large specific surface area, high oil absorption value andhigh fluidity, and has good application prospects in washing powder.
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Description

technical field

[0001] The invention belongs to the technical field of silica preparation, and in particular relates to a silica for washing powder with high fluidity and high oil absorption value and a preparation method thereof. Background technique

[0002] With the gradual enhancement of people's awareness of environmental protection, people will pay more and more attention to their own quality of life. Most of the washing powder with sodium tripolyphosphate as an auxiliary agent has been gradually replaced by 4A zeolite for washing. With the improvement of people's family life quality With continuous improvement, people's requirements for washing products are getting higher and higher, and higher requirements are put forward for additives that play a role in aiding flow and anti-caking in washing powder formulas. High-efficiency, decontamination, energy-saving, and environmentally friendly concentrated washing powder has become The mainstream trend of the laundry deterg...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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