Cation modified sesbania gum surface sizing agent and preparation method thereof

A technology of surface sizing agent and cation, which is applied in the field of cation-modified squash gum surface sizing agent and its preparation, can solve the problems that cannot meet the requirements of rapid maturation of paper machines, etc., and achieve the goal of overcoming waste and pollution of three wastes and improving the resistance to waste. Good effect of water-based and paper physical strength and stability

Inactive Publication Date: 2013-05-15
李端
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the pilot production, the paper manufacturer pointed out that the product can not meet the require...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A cationic modified squash gum surface sizing agent, comprising the following components, by weight (kg), 15kg squash gum, 12kg polyoxyethylene, 0.4kg polyethylene glycol, 13kg cationic monomer, crosslinking agent 6kg, 4kg of initiator, 2.5kg of hard ester glue, 100kg of aluminum sulfate aqueous solution with a concentration of 40%.

[0020] A method for preparing a cationic modified squash gum surface sizing agent, the preparation method includes the following steps: by weight (kg),

[0021] (1) Add 15kg of squash gum, 12kg of polyoxyethylene, 0.4kg of polyethylene glycol, and 13kg of methacryloyloxyethyltrimethylammonium chloride into 800kg of deionized aqueous solution and adjust the pH to 3-4 with hydrochloric acid , heated up to 85°C for 1 hour to obtain a cationic safflower gum solution;

[0022] (2) React 6kg of methylolacrylamide, 7kg of potassium persulfate, and 2.5kg of stearic acid at 85°C for 2 hours, then cool down to room temperature, add 100kg of aluminu...

Embodiment 2

[0024] A cationic modified squash gum surface sizing agent, comprising the following components, by weight (kg), squash gum 20kg, polyoxyethylene 16kg, polyethylene glycol 2kg, cationic monomer 16kg, crosslinking agent 4kg , 5kg of initiator, 5kg of hard ester glue, 100kg of aluminum sulfate aqueous solution with a concentration of 80%.

[0025] A kind of preparation method of cationic modified squash gum surface sizing agent, its preparation method, comprises as following steps:

[0026] (1) Add 20kg of squash gum, 16kg of polyoxyethylene, 2kg of polyethylene glycol, and 16kg of acryloyloxypropyltrimethylammonium chloride into 900kg of deionized aqueous solution, and adjust the pH value to 3-4 with formic acid. Raise the temperature to 82°C and react for 15 hours to obtain a cationic squash gum solution;

[0027] (2) React 4kg of hydroxyethylacrylamide, 5kg of sodium persulfate, and 5kg of stearic acid at 82°C for 3 hours, cool down to room temperature, add 100kg of aluminum...

Embodiment 3

[0029] A cationic modified squash gum surface sizing agent, comprising the following components, by weight (kg), squash gum 18kg, polyoxyethylene 12kg, polyethylene glycol 3kg, cationic monomer 14kg, crosslinking agent 6kg , 6kg of initiator, 4kg of hard ester glue, 100kg of aluminum sulfate aqueous solution with a concentration of 50%.

[0030] A kind of preparation method of cationic modified squash gum surface sizing agent, its preparation method, comprises as following steps:

[0031] (1) Add 18kg of squash gum, 12kg of polyoxyethylene, 3kg of polyethylene glycol, and 14kg of acryloyloxyethyltrimethylammonium chloride into 837kg of deionized aqueous solution, and adjust the pH value to 3-4 with sulfuric acid. Raise the temperature to 80°C and react for 3 hours to obtain a cationic squash gum solution.

[0032] (2) React 6kg of ethoxymethacrylamide, 6kg of ammonium persulfate, and 4g of stearic acid at 80°C for 1.5h, cool down to room temperature, add 100kg of aluminum sul...

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Abstract

The invention relates to a cation modified sesbania gum surface sizing agent and a preparation method thereof. The preparation method of the cation modified sesbania gum surface sizing agent comprises the following steps of: adding 5-20 parts of sesbania gum, 2-16 parts of polyoxyethylene, 0.2-20 parts of polyethylene glycol and 4-16 parts of cationic monomer to 800kg-900kg of aqueous solution; adding acid to the solution to regulate the pH to 3-4; regulating the temperature to 80 DEG C to 90 DEG C and reacting for 1 hour to 3 hours; adding 2-14 parts of cross-linking agent, 0.1-10 parts of initiator and 1-10 parts of stearin gum to the solution prepared in the step 1; adding the acid to regulate the pH of the solution to 3-4; regulating the temperature to 80 DEG C to 90 DEG C and reacting for 1 hour to 3 hours; and 100 parts of adding aluminum sulfate aqueous solution with concentration of 40%-80%, and stirring and discharging to obtain the cation modified sesbania gum surface sizing agent. The modified sesbania gum surface sizing agent has the beneficial effects that the sizing agent prepared by carrying out soluble emulsion cationization to vegetable gelatin and synthetic macromolecule compound and carrying out cross-linking grafting copolymerization has the function of reacting with the fiber to form a covalent bond; moreover, the curing time during the sizing process can be shortened, and the water resistance and strength of the paper are obviously improved.

Description

technical field [0001] The invention belongs to papermaking sizing agents, in particular to a cationic modified squash gum surface sizing agent and a preparation method thereof. Background technique [0002] At present, the sizing agents used in papermaking are all made of petrochemical industry as the main raw material. Petroleum resources have been consumed and in short supply. It is a non-renewable resource, and it is very difficult to decompose and oxidize the pollution source. Moreover, it is a process of transforming energy consumption of resources into a consumption process. In the process of a large amount of energy consumption, a large amount of waste water, waste gas, and waste residue are produced. The obtained product, its role is to combine with the paper fiber molecules, mainly relying on hydrogen bonds, covalent bonds, etc., to produce the sizing function. There are also problems with the stability of the sizing effect, such as being greatly affected by the h...

Claims

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Application Information

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IPC IPC(8): D21H21/16C08F291/00
Inventor 田成杰李端
Owner 李端
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