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Preparation method and application of polyacrylamide/keramite nanotube composite papermaking filler

A technology of halloysite nanotubes and polyacrylamide, which is applied in the field of papermaking, can solve the problems of complicated industrial production steps and increased costs, and achieve the effect of reducing adverse effects and increasing mechanical retention

Inactive Publication Date: 2014-06-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this complicates the industrial production steps and increases the cost

Method used

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  • Preparation method and application of polyacrylamide/keramite nanotube composite papermaking filler
  • Preparation method and application of polyacrylamide/keramite nanotube composite papermaking filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 40g of halloysite nanotubes, 4g of acrylamide monomer, and 100g of water into a suction filter bottle, stir and mix them evenly with a magnetic stirrer, connect the filter bottle to a vacuum pump, and keep the whole system sealed. Start the vacuum pump, vacuum for 10 minutes, then turn off the vacuum pump, and close the vacuum valve to seal for 20 minutes. Then open the vacuum valve to restore the air pressure in the system to normal atmospheric pressure. Repeat the above steps for a duration of 6 hours. The halloysite nanotube-acrylamide composite monomer is prepared. Weigh 30g halloysite nanotube / acrylamide composite monomer, add 100g water into a three-necked flask, stir and mix well, and then blow nitrogen gas for 30 minutes. Add 0.8g initiator (ammonium persulfate: sodium bisulfite = 1:1, mass ratio) and 0.5g cationic monomer dimethyl diallyl ammonium chloride, the polymerization reaction starts timing, and the reaction temperature is 60°C. After 3 hours o...

Embodiment 2

[0036] Weigh 40g of halloysite nanotubes, 4g of acrylamide monomer, 90g of water, and 10g of ethanol into a suction filter flask, and stir and mix them evenly with a magnetic stirrer. Start the vacuum pump, vacuum for 10 minutes, then turn off the vacuum pump, and close the vacuum valve to seal for 20 minutes. Then open the vacuum valve to restore the air pressure in the system to normal atmospheric pressure. Repeat the above steps for 6 hours to prepare halloysite nanotube / acrylamide composite monomer. Weigh 30g halloysite nanotube / acrylamide composite monomer, add 100g water into a three-necked flask, stir and mix well, and then blow nitrogen gas for 30 minutes. Add 0.3g initiator (ammonium persulfate: sodium bisulfite = 1:1, mass ratio) and 0.5g cationic monomer dimethyl diallyl ammonium chloride, the polymerization reaction starts timing, and the reaction temperature is 50°C. After 4 hours of reaction, stop the polymerization reaction to prepare polyacrylamide / haloysite ...

Embodiment 3

[0038]Weigh 10 g of halloysite nanotubes, 1 g of acrylamide monomer, and 100 g of water into a suction filter flask, and stir and mix them evenly with a magnetic stirrer. Start the vacuum pump, vacuum for 5 minutes, then turn off the vacuum pump, and close the vacuum valve to seal for 5 minutes. Then open the vacuum valve to restore the air pressure in the system to normal atmospheric pressure. Repeat the above steps for 1 hour to prepare halloysite nanotube / acrylamide composite monomer. Weigh 20g halloysite nanotube / acrylamide composite monomer, add 100g water into a three-necked flask, stir and mix well, and then blow nitrogen gas for 15 minutes. Add 0.1g initiator (ammonium persulfate: sodium bisulfite = 1:1, mass ratio) and 0.5g cationic monomer dimethyl diallyl ammonium chloride, the polymerization reaction starts timing, and the reaction temperature is 40°C. After 3 hours of reaction, stop the polymerization reaction to prepare polyacrylamide / haloysite nanotube composi...

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Abstract

The invention relates to a preparation method and application of a polyacrylamide / keramite nanotube composite papermaking filler. The preparation method comprises the following steps of: adding a keramite nanotube into aqueous solution of acrylamide monomer or mixed solution of water and ethanol of acrylamide, then loading acrylamide monomer molecules to a cavity of the keramite nanotube by using vacuum negative pressure, and preparing the keramite nanotube / acrylamide composite monomer; and then through a free radical solution polymerization reaction, polymerizing the keramite nanotube / acrylamide composite monomer, and a polyacrylamide molecule chain penetrating through the keramite nano cavity, so as to prepare the olyacrylamide / keramite nanotube composite papermaking filler. The olyacrylamide / keramite nanotube composite papermaking filler is added into the papermaking pulp, so that the amount of fillers in the paper can be increased; and the effect on physical strength of the paper caused by adding the fillers can be reduced.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a preparation method and application of polyacrylamide / halloysite nanotube composite papermaking filler. Background technique [0002] In the paper industry, the addition of fillers is necessary. Adding fillers, on the one hand, can reduce the use of pulp fibers, thereby reducing wood consumption, saving forest resources, and reducing production costs; , so that the printability of the paper is greatly reduced, wasting ink, and affecting the printing effect. The addition of fillers can fill these pits and make the paper smooth, and also improve the ink absorption and whiteness of the paper, and increase the use value of the paper. [0003] The strength of paper is mainly determined by the strength of paper fibers themselves and the hydrogen bonding between fibers. The addition of fillers reduces the contact area between fibers and increases the contact distance, which affe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/68D21H17/37C08F20/56C08F2/44
Inventor 张宏伟郑国平陈港
Owner SOUTH CHINA UNIV OF TECH
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