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A kind of aos-aa binary copolymer surfactant and its preparation method and application

A technology of surfactant and binary copolymer, which is applied in the field of waste paper deinking, can solve the problem of less copolymer deinking agent, and achieve the effects of less residual ink, good deinking effect and high whiteness

Active Publication Date: 2017-10-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are very few studies on copolymer deinking agents

Method used

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  • A kind of aos-aa binary copolymer surfactant and its preparation method and application
  • A kind of aos-aa binary copolymer surfactant and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Reaction raw material: the initiator ammonium persulfate of 3.0% of the initiator ammonium persulfate that is the monomer α-olefin sulfonate of 1:1 and monomer acrylic acid, the monomer gross mass in molar ratio, and the balance is deionized water (reaction medium), wherein reaction The mass percentage concentration of monomer sodium α-olefin sulfonate in the system is 12%.

[0029] Steps: first filter the monomer α-olefin sulfonate sodium to remove impurities, and adjust to neutrality with a 20% NaOH solution, then use deionized water as the reaction medium, and deionized water, half of the monomer α- Sodium olefin sulfonate (AOS) and half of the monomeric acrylic acid (AA) were put into a three-necked flask at 85°C, and the rest of the AOS and AA were added after 1 hour, and when AOS and AA were added to the three-necked flask for the first time, it started Continuously and slowly add the initiator ammonium persulfate into the three-necked flask dropwise for 1.5 hours...

Embodiment 2

[0036] Reaction raw material: the initiator ammonium persulfate of 1.5% of the initiator ammonium persulfate that is the monomer α-olefin sulfonate of 1:2 and monomer acrylic acid, monomer gross mass, the balance is deionized water (reaction medium), wherein reaction The mass percentage concentration of monomer sodium α-olefin sulfonate in the system is 12%.

[0037] Steps: first filter the monomer α-olefin sulfonate sodium to remove impurities, and adjust to neutrality with a 20% NaOH solution, then use deionized water as the reaction medium, and deionized water, half of the monomer α- Sodium olefin sulfonate (AOS) and half of the monomeric acrylic acid (AA) were put into a three-necked flask at 85°C, and the rest of the AOS and AA were added after 1 hour, and when AOS and AA were added to the three-necked flask for the first time, it started Continuously and slowly add the initiator ammonium persulfate into the three-necked flask dropwise for 1.5 hours, and stir the reaction...

Embodiment 3

[0039] Reaction raw material: the initiator ammonium persulfate of 3.0% initiator ammonium persulfate that is the monomer α-olefin sulfonate of 1:2 and monomer acrylic acid, the monomer gross mass in molar ratio, and the remainder is deionized water (reaction medium), wherein reaction The mass percentage concentration of monomer sodium α-olefin sulfonate in the system is 12%.

[0040] Steps: first filter the monomer α-olefin sulfonate sodium to remove impurities, and adjust to neutrality with a 20% NaOH solution, then use deionized water as the reaction medium, and deionized water, half of the monomer α- Sodium olefin sulfonate (AOS) and half of the monomeric acrylic acid (AA) were put into a three-necked flask at 85°C, and the rest of the AOS and AA were added after 1 hour, and when AOS and AA were added to the three-necked flask for the first time, it started Continuously and slowly add the initiator ammonium persulfate into the three-necked flask dropwise for 1.5 hours, and s...

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Abstract

The invention provides a kind of AOS-AA binary copolymer surfactant and its preparation method and application, which is generated by polymerization reaction of monomer α-olefin sulfonate sodium and monomer acrylic acid under the action of initiator ammonium persulfate, Wherein the molar ratio of sodium α-olefin sulfonate and acrylic acid is 1:(1-4), the amount of initiator is 0.5-4.5% of the total mass of the monomer, the reaction medium is water, and the monomer α-olefin sulfonic acid in the reaction system The mass percent concentration of sodium is 10-15%. Compared with the commercially available low molecular weight deinking agent, the AOS-AA binary copolymer surfactant prepared by the present invention has larger molecular weight and stronger ability to disperse, collect and emulsify ink, and can be used alone or with low molecular weight deinking agent. After the surfactant is compounded, it is used as a deinking agent to deink waste paper. The regenerated paper has high whiteness and less residual ink. It is especially suitable for flotation deinking of waste magazine paper and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of waste paper deinking, and relates to a surfactant that can be used for waste paper deinking, in particular to an AOS-AA binary copolymer surfactant and its preparation method and application. Background technique [0002] Today, the world's environment is deteriorating, and the supply of wood raw materials is seriously insufficient. my country's forest area only accounts for 13% of the world's total forest area, and the per capita occupancy rate is only 15% of the world's average level. However, our demand for paper is increasing, so we need to increase our use of recycled paper. usage of. Deinking of waste paper is an important way of secondary utilization of waste paper, and its key technology is the research and development of deinking agent. [0003] At present, although there are many types of waste paper deinking agents in China, their internal chemicals are generally the same, and most of them are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F228/02C09D9/04
Inventor 张昌辉焦雅兰韩文会
Owner SHAANXI UNIV OF SCI & TECH
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