Cultural paper surface sizing agent

A technology for surface sizing agent and cultural paper, which is applied in the direction of adding water repellents, etc., can solve problems such as non-compliance with green environmental protection, application restrictions, environmental pollution, etc., and achieve the effects of low cost, improved performance and low cost

Inactive Publication Date: 2011-02-16
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most synthetic polymer surface sizing agents contain too many emulsifiers in organic solvents or sizing agents, which cause environmental pollution and do not meet the requirements of green environmental protection. In addition, the cost of synthetic polymer surface sizing agents is relatively high, thus , so that its application is subject to certain restrictions

Method used

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  • Cultural paper surface sizing agent
  • Cultural paper surface sizing agent
  • Cultural paper surface sizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A main raw material of cultural paper surface sizing agent is as follows, and the following are all percentages by weight:

[0027] Carboxymethyl Chitosan 0.5%;

[0028] Zirconium oxychloride 25%;

[0029] Tartaric acid 5%;

[0030] Deionized water 69.5%

[0031] Among the above raw materials, zirconium oxychloride is industrial-grade zirconium oxychloride with a zirconium content of 36.5%, carboxymethyl chitosan is industrial-grade, and the rest are analytically pure.

[0032] A preparation method of cultural paper surface sizing agent:

[0033] Step 1: Dissolve 0.5% carboxymethyl chitosan in 5% tartaric acid with a pH of 1-2, then heat and stir at 60-70°C for 1 hour to obtain carboxymethyl chitosan solution, spare;

[0034] Step 2: dissolving 25% zirconium oxychloride in deionized water to prepare an aqueous solution of zirconium oxychloride for later use;

[0035] Step 3: slowly drop the carboxymethyl chitosan solution obtained in Step 1 into the zirconium oxyc...

Embodiment 2

[0037] A main raw material of cultural paper surface sizing agent is as follows, and the following are all percentages by weight:

[0038] Carboxymethyl Chitosan 0.4%;

[0039] Zirconium oxychloride 22%;

[0040] Citric acid 4%;

[0041] Potassium hydrogen phthalate 0.7%;

[0042] Deionized water 73.3%

[0043] In the above-mentioned raw materials, zirconium oxychloride is the zirconium oxychloride of technical grade zirconium content and is 36.5%, carboxymethyl chitosan is technical grade, and all the other are analytically pure.

[0044] A preparation method of cultural paper surface sizing agent:

[0045] Step 1: Dissolve 0.4% carboxymethyl chitosan in 4% citric acid with a pH of 1-2, then heat and stir at 60-70°C for 1 hour to obtain carboxymethyl chitosan sugar solution, set aside;

[0046] Step 2: dissolving 22% zirconium oxychloride in deionized water to prepare an aqueous solution of zirconium oxychloride for later use;

[0047] Step 3: dissolving potassium hydr...

Embodiment 3

[0050] A main raw material of cultural paper surface sizing agent is as follows, and the following are all percentages by weight:

[0051] Carboxymethyl Chitosan 0.3%;

[0052] Zirconium oxychloride 20%;

[0053] Oxalic acid 3%;

[0054] Potassium hydrogen phthalate 0.5%;

[0055] Deionized water 76.2%

[0056] Among the above raw materials, zirconium oxychloride is industrial-grade zirconium oxychloride with a zirconium content of 36.5%, carboxymethyl chitosan is industrial-grade, and the rest are analytically pure.

[0057] A preparation method of cultural paper surface sizing agent:

[0058] Step 1: Dissolve 0.3% carboxymethyl chitosan in 3% oxalic acid with a pH of 1-2, then heat and stir at 60-70°C for 1 hour to obtain carboxymethyl chitosan solution, spare;

[0059] Step 2: dissolving 20% ​​zirconium oxychloride in deionized water to prepare an aqueous solution of zirconium oxychloride for later use;

[0060] Step 3: dissolving 0.5% potassium hydrogen phthalate in...

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PUM

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Abstract

The invention discloses a cultural paper surface sizing agent. The raw material of the cultural paper surface sizing agent comprises the following main components in percentage by weight: 0.3 to 0.5 percent of carboxymethyl chitosan, 20 to 25 percent of zircon salt, 2 to 5 percent of acid solution and the balance of deionized water. In preparation, solution of carboxymethyl chitosan is prepared first by dissolving the carboxymethyl chitosan in the acid solution; then solution of zircon salt is prepared by dissolving the zircon salt in the deionized water; and finally, the solution of carboxymethyl chitosan is dripped into the solution of zircon salt slowly, the mixed solution is stirred uniformly, and thus, the cultural paper surface sizing agent is obtained. The paper made by using the cultural paper surface sizing agent of the invention is insusceptible to picking and duslting, low in cost and environmentally friendly.

Description

【Technical field】 [0001] The invention belongs to the field of papermaking chemicals and relates to a surface sizing agent for cultural paper. 【Background technique】 [0002] Surface sizing agents for papermaking can be roughly divided into two categories: the first category is natural polymer surface sizing agents; the second category is synthetic polymer surface sizing agents. The sizing principle of natural polymer surface sizing agent and synthetic polymer surface sizing agent is to form a thin film on the paper, so as to improve the water resistance, stiffness and sizing degree of the paper. [0003] At present, the domestic papermaking industry generally adopts natural polymer modified sizing agent, which has little pollution and low cost, but after sizing paper, it is prone to hair loss and powder loss in the printing process, especially not suitable for the current high-speed printing industry. There are four types of synthetic polymer surface sizing agents, styren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16
Inventor 张光华王帆
Owner SHAANXI UNIV OF SCI & TECH
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