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Surface sizing agent, raw material composition and preparation method and application thereof

A technology of surface sizing agent and raw material composition, which is applied in fiber raw material treatment, paper coating, water repellent addition, etc., can solve the problems of water resistance, weather resistance, easy to be affected by emulsifier, high film forming temperature, and water resistance Insufficient and other issues

Active Publication Date: 2020-08-25
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome that the use of styrene-acrylic latex surface sizing agent in the prior art will cause hair loss in the paper industry, insufficient water resistance, water resistance and weather resistance are easily affected by emulsifiers, high film forming temperature, etc. Defects and provide a surface sizing agent, raw material composition and its preparation method and application

Method used

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  • Surface sizing agent, raw material composition and preparation method and application thereof
  • Surface sizing agent, raw material composition and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] (1) Add 60g of hydroxypropyl methylcellulose, 254g of deionized water and 4g of 32% aqueous sodium hydroxide solution in a four-necked flask with a condensing tube and a stirring rotor, start stirring for 5min, and turn on the heating mantle Heating to 60°C to prepare mixed material A;

[0084] (2) At room temperature, 24g styrene, 16g butyl methacrylate, 4g disodium edetate, and 12g dodecyltrimethylammonium chloride are mixed to prepare mixed material B, and the mixing time is 30min;

[0085] (3) Under the condition that the nitrogen atmosphere and the temperature are 60°C, in the mixed material A, the mixed material B prepared in step (2) and the potassium persulfate aqueous solution with a mass fraction of 5% are added dropwise simultaneously, and the mixed material B is dripped Adding time is 30min, and the dripping time of 5% potassium persulfate aqueous solution is 35min in mass fraction, makes mixed material C;

[0086] (4) Under a nitrogen atmosphere and a tem...

Embodiment 2

[0090] (1) Add 48g of hydroxymethyl cellulose, 192g of deionized water and 6g of 32% aqueous sodium hydroxide solution in a four-neck flask with a condensing tube and a stirring rotor, start stirring for 10min, and turn on the heating mantle for heating Raise the temperature to 80°C to prepare the mixed material A;

[0091] (2) At room temperature, mix 24g butadiene, 16g butyl methacrylate, 8g disodium ethylenediamine tetraacetate, and 20g dodecyltrimethylammonium chloride to prepare mixed material B. The mixing time 30min;

[0092] (3) Under the condition that the nitrogen atmosphere and the temperature are 80° C., the mixture B prepared in step (2) and the ammonium persulfate aqueous solution with a mass fraction of 10% are added dropwise to the mixture A at the same time, and the drops of the mixture B are Adding time is 40min, and the dripping time of 10% ammonium persulfate aqueous solution is 45min in mass fraction, makes mixed material C;

[0093] (4) Under a nitrogen...

Embodiment 3

[0097] (1) Add 60g of alkali lignin, 192g of deionized water and 2g of 32% aqueous sodium hydroxide solution in a four-neck flask with a stirring rotor, start stirring for 10min, open the heating mantle and heat up to 85°C, mixed material A was prepared;

[0098] (2) At room temperature, mix 20g pentadiene, 20g-2-ethylhexyl acrylate, 8g disodium ethylenediaminetetraacetate, and 20g dodecyltrimethylammonium chloride to prepare mixture B , the mixing time is 30min;

[0099] (3) Under the condition that the nitrogen atmosphere and the temperature are 60°C, in the mixed material A, the mixed material B prepared in step (2) and the ammonium persulfate aqueous solution with a mass fraction of 10% are added dropwise at the same time, the drops of the mixed material B Adding time is 40min, and the dripping time of 10% ammonium persulfate aqueous solution is 45min in mass fraction, makes mixed material C;

[0100] (4) Under the condition of nitrogen atmosphere and temperature being 6...

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Abstract

The invention discloses a surface sizing agent, a raw material composition and a preparation method and application thereof. The raw material composition of the surface sizing agent comprises the following components in parts by weight: 1 part of biomass-based material, 0.003 to 0.2 part of alkaline substance, 0.15 to 1.5 parts of hard monomer and soft monomer, 0.015 to 0.2 part of initiator, 0.03to 0.5 part of complexing agent, 0.03 to 0.6 part of functional monomer, 0.06 to 0.5 part of emulsifying agent and 1.5 to 5 parts of water. The functional monomer is one or more of methacryloyloxyethyl trimethyl ammonium chloride, methacryloyloxyethyl dimethyl benzyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and acryloyloxyethyl dimethyl benzyl ammonium chloride; the structural formula of the emulsifier is shown in the specification, wherein R is C10-C14 alkyl. The surface sizing agent is good in water resistance, low in viscosity and good in compatibility with a starchsizing agent, and the ring crush compression strength of corrugated base paper is improved.

Description

technical field [0001] The invention specifically relates to a surface sizing agent, a raw material composition, a preparation method and application thereof. Background technique [0002] With the increase of waste paper consumption in our country, the recycling of waste paper leads to a significant decline in paper performance, especially the strength performance. In addition, waste paper pulp and high-yield pulp contain a large amount of anion garbage. Since the fiber itself is also negatively charged, the pulp inside It is difficult for chemical additives to achieve the desired effect, but the use of surface sizing technology can well overcome such shortcomings. [0003] Traditional styrene-acrylic latex is mainly composed of styrene, butyl acrylate and acrylic acid. There are many problems in the styrene-acrylic emulsion synthesized only by these small molecular monomers, including insufficient water resistance, water resistance and weather resistance are easily affecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16D21H19/10D21H17/37C08F212/08C08F236/06C08F236/08C08F220/18C08F220/34C08F226/02
CPCD21H21/16D21H19/10D21H17/37C08F212/08C08F236/06C08F236/08C08F220/1804C08F220/34C08F220/1808C08F226/02
Inventor 施晓旦李燕金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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