Silicon dioxide, and preparation and use thereof

A silicon dioxide, sodium silicate solution technology, applied in the direction of silicon dioxide, silicon oxide, copying/marking methods, etc., can solve the problems of high viscosity, unfavorable, unfavorable technology promotion, etc., and achieve the effect of improving performance

Inactive Publication Date: 2009-07-08
北京航天赛德科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high solid content often leads to high viscosity of the system, which is not conducive to online coating
CN 1315905A discloses a kind of coating composition, comprises the mixture of inorganic oxide and water-soluble polymer and nonionic latex polymer, utilizes this composition and can obtain the coating that solid content is as high as 20% and has lower viscosity simultaneously, yet , this coating composition has special requirements for each component, which is not conducive to the promotion of technology

Method used

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  • Silicon dioxide, and preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add 1000ml of sodium silicate solution with a concentration of 1.5M into the reaction kettle with stirring device, control the temperature at 20°C, add 20wt% dilute sulfuric acid to pH 10 under constant stirring, continue to add acid to pH 4, heat to 65°C, add ammonia water, adjust the pH value to 10, heat up to 100°C and age for 2 hours, add acid to pH 3 after aging, age for 1 hour, add 1.5M sodium silicate solution to pH after aging The value was 7.5, and stirred at 80°C for 30 minutes, filtered and washed three times with deionized water, dried and pulverized to obtain the finished product.

Embodiment 2

[0048] Add 1000ml of sodium silicate solution with a concentration of 2.0M into the reaction kettle with a stirring device. At this time, the temperature is 30°C. With constant stirring, add 20wt% dilute sulfuric acid until the pH is 10. After stirring for 20 minutes, continue to add acid to pH 3, heat to 50°C, add ammonia water, adjust the pH to 9, heat up to 100°C and age for 1 hour, add acid to pH 3 after aging, age for 3 hours, add 2.0M water glass again after aging to pH 6.5 , and stirred at 90°C for 30 minutes, filtered and washed three times with deionized water, dried and pulverized to obtain the finished product.

[0049] The product parameters of the above examples and commercially available silica (P508, produced by Grace) are shown in the table below. The test method of silica is: the pore volume is measured according to the DIN66134 method; the specific surface area is measured according to the DIN66131 method; the DBP absorption value is measured according to the...

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Abstract

The invention relates to silicon dioxide, a method for preparing the same and application of the silicon dioxide in an ink absorption coating layer. The silicon dioxide is used as the ink absorption coating layer of paint, has no special requirement on other compositions forming the coating layer, and has the advantages of high fastness, low viscidity, and the like; and colorful ink-jet printing paper containing the silicon dioxide has strong color reducing performance and other excellent printing performances. The silicon dioxide is characterized in that pore volume is between 0.5 and 1.2 cm/g; specific surface area is between 100 and 280 m/g; DBP absorption value is between 200 and 350g/100g; d50 is between 2 and 15 mu m; (pore volume+9.569*10*DBP absorption value)/d50 is more than or equal to 0.16 and less than or equal to 0.58, wherein the meaning of each symbol is stated as an instruction book.

Description

technical field [0001] The invention relates to silicon dioxide, its preparation method and its application in ink-absorbing coating. Background technique [0002] Silica has long been used as the most widely used voided ink-receptive coating pigment for color inkjet printing paper. Color inkjet printing paper is manufactured by coating a continuously moving substrate web. This manufacturing method requires a certain amount of solid content to be coated on the substrate to give it excellent printing performance. Therefore, the solid content and viscosity of the coating determine the coating efficiency. In general, the higher the solids content, the higher the achievable coating efficiency. However, high solid content often leads to high viscosity of the system, which is not conducive to online coating. CN 1315905A discloses a kind of coating composition, comprises the mixture of inorganic oxide and water-soluble polymer and nonionic latex polymer, utilizes this compositio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12B41M5/50
Inventor 操应军郑连营李宝德裴亚利靳桂茵樊新华张忆
Owner 北京航天赛德科技发展有限公司
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