Surface Coating Modification Method and Application of Inorganic Papermaking Fiber Calcium Sulfate Whiskers

A calcium sulfate whisker and surface coating technology, which is applied in the field of paper-making fillers, can solve the problems of reducing the retention rate and affecting the use effect, and achieve the effects of improving the retention rate, reducing wood waste, and high efficiency
CN103074800BActive Publication Date: 2016-01-27SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2016-01-27

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Abstract

The invention discloses a method for coating and modifying surface of inorganic paper making fiber calcium sulfate whisker, which comprises the following steps: 1) mixing the calcium sulfate whisker with a dispersant relative to 1-10% of mass fraction of calcium sulfate whisker, dispersing the calcium sulfate whisker; filtering and drying after treating to obtain the calcium sulfate whisker with high dispersion; 2) measuring water, ethanol, ammoniacal liquor and organosilicon source with set volume ratio, placing the water, ethanol and ammoniacal liquor in a three-mouth flask, performing magnetic stirring, adding a proper amount of surfactant, uniformly mixing for standby; 3) adding the prepared calcium sulfate whisker with high dispersion in the three-mouth flask filled with a mixed solution, uniformly mixing, slowly adding the measured organosilicon source by batches; and 4) stirring and modifying the prepared mixed solution at the temperature of below than 25 DEG C, subsiding for 8-10 hours, filtering, and drying under the temperature of 95% to prepare the modified calcium sulfate whisker.
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Description

technical field

[0001] The invention relates to the technical field of papermaking fillers, in particular to a surface coating modification method and application of calcium sulfate whiskers of inorganic papermaking fibers. Background technique

[0002] Micro-nano technology has become a hot field, and the development trend of micro-nano in the paper industry cannot be ignored. It brings potential advantages that other materials cannot possess. At present, the development and application of micro-nano fillers has attracted the attention of researchers in various fields.

[0003] According to relevant literature reports, a newly developed micro-nano filler with high aspect ratio can replace traditional fillers and be added to pulp wet cloth. For example, silica nanofiber "silicatenanofibers" (SNF), a silicon-based high-aspect-ratio filler developed by GRinternational, can not only optimize paper, but also improve the porosity, smoothness, bulk density, and optical-mechanical...

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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