阅读说明：本技术 一种造纸施胶剂的专用乳化剂 (Special emulsifier for papermaking sizing agent ) 是由 黄颖 李艳 于 2020-06-20 设计创作，主要内容包括：本发明涉及乳化剂技术领域,具体为一种造纸施胶剂的专用乳化剂,包括以下重量组分的原料：脂肪酸钠40-60份、乙二胺25-40份、烯基琥珀酸酐10-20份、环氧氯丙烷5-15份、三乙胺20-30份、脂肪醇聚氧乙烯醚3-12份、十二烷基硫酸钠20-30份。采用本发明的配方和工艺生产的乳化剂,配方科学简单、制备工艺简洁,乳化效果好,可以提高纸张的粘结力,使得纸张具有耐磨、抗酸碱和防水的性能,功能性强。(The invention relates to the technical field of emulsifiers, in particular to a special emulsifier for a papermaking sizing agent, which comprises the following raw materials in parts by weight: 40-60 parts of sodium aliphatate, 25-40 parts of ethylenediamine, 10-20 parts of alkenyl succinic anhydride, 5-15 parts of epoxy chloropropane, 20-30 parts of triethylamine, 3-12 parts of fatty alcohol-polyoxyethylene ether and 20-30 parts of sodium dodecyl sulfate. The emulsifier produced by adopting the formula and the process disclosed by the invention is scientific and simple in formula, simple in preparation process and good in emulsifying effect, can improve the binding power of paper, enables the paper to have wear resistance, acid-base resistance and water resistance, and is strong in functionality.)

1. The special emulsifier for the papermaking sizing agent is characterized by comprising the following raw materials in parts by weight: 40-60 parts of sodium aliphatate, 25-40 parts of ethylenediamine, 10-20 parts of alkenyl succinic anhydride, 5-15 parts of epoxy chloropropane, 20-30 parts of triethylamine, 3-12 parts of fatty alcohol-polyoxyethylene ether and 20-30 parts of sodium dodecyl sulfate.

2. The emulsifying agent special for a papermaking sizing agent according to claim 1, characterized by comprising the following raw materials by weight: 45-55 parts of sodium aliphatate, 20-25 parts of ethylenediamine, 13-18 parts of alkenyl succinic anhydride, 8-12 parts of epoxy chloropropane, 22-28 parts of triethylamine, 5-10 parts of fatty alcohol-polyoxyethylene ether and 23-27 parts of sodium dodecyl sulfate.

3. The emulsifying agent special for a papermaking sizing agent according to claim 1, characterized by comprising the following raw materials by weight: 20 parts of sodium aliphatate, 22 parts of ethylenediamine, 15 parts of alkenyl succinic anhydride, 10 parts of epoxy chloropropane, 25 parts of triethylamine, 7 parts of fatty alcohol-polyoxyethylene ether and 25 parts of sodium dodecyl sulfate.

4. The special emulsifier for a papermaking sizing agent according to claim 1, 2 or 3, wherein the sodium fatty acid is one of sodium laurate, sodium myristate and sodium stearate.

5. The process for preparing an emulsifier specific for a papermaking size according to any one of claims 1 to 4, wherein the steps are as follows:

(1) taking corresponding parts of sodium aliphatate, ethylenediamine, alkenyl succinic anhydride, epichlorohydrin, triethylamine, fatty alcohol-polyoxyethylene ether and sodium dodecyl sulfate for later use;

(2) adding sodium aliphatate, ethylenediamine and alkenyl succinic anhydride into a reaction kettle, heating to 50-70 ℃, and uniformly stirring for 30-50min to obtain a first mixed solution;

(3) adding epoxy chloropropane, triethylamine, fatty alcohol-polyoxyethylene ether and sodium dodecyl sulfate into a reaction kettle, and stirring at a constant speed for 100-fold sand 120min at room temperature to obtain a second mixed solution;

(4) and stirring and mixing the first mixed solution and the second mixed solution, and reacting for 2-3h at the temperature of 30-45 ℃ to obtain the finished product of the emulsifier.

Technical Field

The invention relates to the technical field of emulsifiers, in particular to a special emulsifier for a papermaking sizing agent.

Background

Paper making is an important invention for ancient Chinese workers. The method is divided into a mechanism mode and a manual mode. The mechanism is continuously carried out on a paper machine, pulp suitable for paper quality is diluted to certain concentration by water, and is primarily dewatered at a wire part of the paper machine to form a wet paper sheet, and then the wet paper sheet is pressed for dewatering and then dried to form paper. In order to increase the surface strength of paper and board against the diffusion and penetration of aqueous liquids, it is necessary to apply a sizing treatment to the paper and board. The added auxiliaries are called papermaking sizing agents.

The sizing agent has various varieties, and the sizing agent in the sizing agent mainly comprises rosin, unmodified and modified starch PVA, Alkyl Ketene Dimer (AKD) and Alkenyl Succinic Anhydride (ASA); the surface sizing agent comprises modified and unmodified starch, paraffin emulsion, carboxymethyl cellulose, styrene-maleic anhydride copolymer and the like, an emulsifier is required in the production process of the sizing agent, the existing emulsifier has single function and limited emulsifying effect, and cannot meet the modern use requirement.

Disclosure of Invention

The invention aims to provide a special emulsifier for a papermaking sizing agent, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a special emulsifier for a papermaking sizing agent comprises the following raw materials in parts by weight: 40-60 parts of sodium aliphatate, 25-40 parts of ethylenediamine, 10-20 parts of alkenyl succinic anhydride, 5-15 parts of epoxy chloropropane, 20-30 parts of triethylamine, 3-12 parts of fatty alcohol-polyoxyethylene ether and 20-30 parts of sodium dodecyl sulfate.

As a still further scheme of the invention: the material comprises the following components by weight: 45-55 parts of sodium aliphatate, 20-25 parts of ethylenediamine, 13-18 parts of alkenyl succinic anhydride, 8-12 parts of epoxy chloropropane, 22-28 parts of triethylamine, 5-10 parts of fatty alcohol-polyoxyethylene ether and 23-27 parts of sodium dodecyl sulfate.

As a still further scheme of the invention: the material comprises the following components by weight: 20 parts of sodium aliphatate, 22 parts of ethylenediamine, 15 parts of alkenyl succinic anhydride, 10 parts of epoxy chloropropane, 25 parts of triethylamine, 7 parts of fatty alcohol-polyoxyethylene ether and 25 parts of sodium dodecyl sulfate.

As a still further scheme of the invention: the sodium fatty acid is one of sodium laurate, sodium myristate and sodium stearate.

A preparation method of a special emulsifier for a papermaking sizing agent comprises the following steps: the method comprises the following steps:

(1) taking corresponding parts of sodium aliphatate, ethylenediamine, alkenyl succinic anhydride, epichlorohydrin, triethylamine, fatty alcohol-polyoxyethylene ether and sodium dodecyl sulfate for later use;

(2) adding sodium aliphatate, ethylenediamine and alkenyl succinic anhydride into a reaction kettle, heating to 50-70 ℃, and uniformly stirring for 30-50min to obtain a first mixed solution;

(3) adding epoxy chloropropane, triethylamine, fatty alcohol-polyoxyethylene ether and sodium dodecyl sulfate into a reaction kettle, and stirring at a constant speed for 100-fold sand 120min at room temperature to obtain a second mixed solution;

(4) and stirring and mixing the first mixed solution and the second mixed solution, and reacting for 2-3h at the temperature of 30-45 ℃ to obtain the finished product of the emulsifier.

Compared with the prior art, the invention has the beneficial effects that: the emulsifier produced by adopting the formula and the process disclosed by the invention is scientific and simple in formula, simple in preparation process and good in emulsifying effect, can improve the binding power of paper, enables the paper to have wear resistance, acid-base resistance and water resistance, and is strong in functionality.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail with reference to examples.