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Reinforcing agent and preparation method thereof, and application of reinforcing agent

A technology of strengthening agent and dispersing agent, which is applied in the field of papermaking industry, can solve the problems affecting the strengthening effect of strengthening agent, the troubles of actual production in factories, and the limitation of paper machine speed, etc., and achieve the effect of improving application effect, high molecular weight and increasing particle size

Inactive Publication Date: 2018-04-20
冠宏化工(扬州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] No matter what kind of strengthening agent is applied, it is unavoidable that it needs to be added to the paper machine system in liquid form (even if it is originally solid, it needs to be brewed or boiled to be added as a liquid), which will inevitably lead to the loss of the strengthening agent. The problem of loss, thus affecting the strengthening effect of the strengthening agent, at the same time, the lost strengthening agent causes a great burden on the white water circulation system of the paper machine
[0004] At the same time, the application of high-molecular-weight organic synthetic polymeric strengthening agent can certainly improve the strength of paper to a great extent, but it will inevitably have a certain negative impact on the dehydration of the paper machine, thereby limiting the speed of the paper machine and reducing the output of the paper machine , which brings certain troubles to the actual production of the factory

Method used

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  • Reinforcing agent and preparation method thereof, and application of reinforcing agent
  • Reinforcing agent and preparation method thereof, and application of reinforcing agent
  • Reinforcing agent and preparation method thereof, and application of reinforcing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dry strength agent: traditional anionic dry strength agent (A-PAM), with a solid content of more than 15% and a viscosity ≥ 5000cps.

[0028] Drugs: microcapsule wall material (gelatin, gum arabic), emulsifier (OP-10), citric acid for pH adjustment, dispersant: polyethylene-acrylic acid copolymer).

[0029] Anionic enhancer (A-PAM) for traditional papermaking was prepared:

[0030] Prepare microcapsule wall material solutions (gelatin and gum arabic solutions) respectively, with a concentration of 2%. Add gum arabic solution to the prepared anion enhancer A-PAM, the amount of gum arabic added is controlled at 80% (to the core material), and the emulsification of the solution is realized by high-speed stirring, and the rotation speed is generally controlled at 150 rpm. Add gelatin solution to the final solution, the amount of gelatin added is controlled within the range of 1:1 to the gum arabic, the emulsifier OP-10 is added, the dosage is controlled at 2%, and the pH o...

Embodiment 2

[0035] Dry strength agent: traditional cationic dry strength agent (C-PAM), with a solid content of more than 20%, viscosity ≥ 4000cps

[0036] Drugs: microcapsule wall material (PEG polyethylene glycol), emulsifier (polyoxyethylene ether), dispersant selection: polyacrylamide).

[0037] Cationic Strengthening Agent (C-PAM) for Conventional Papermaking

[0038] Prepare the microcapsule wall material solution (PEG) with a concentration of 4%. Add PEG solution to the prepared cationic enhancer C-PAM, the amount of PEG added is controlled at 50% (for the core material), and an emulsifier (polyoxyethylene ether) is added during high-speed agitation to realize emulsification of the solution, and the rotation speed is average Control at 250 rpm, add petroleum ether (the dosage is generally controlled at 1%~50%, preferably 10%~20%) into the emulsified solution to form microcapsule particles in the solution. After filtration, dehydration and drying, microcapsules are obtained. Then...

Embodiment 3

[0043] Dry strength agent: traditional cationic dry strength agent (C-PAM), with a solid content of more than 20%, viscosity ≥ 4000cps, traditional anionic dry strength agent (A-PAM), with a solid content of more than 15%, viscosity ≥ 5000cps

[0044] Drugs: microcapsule wall material (gelatin), emulsifier (TX-100 octylphenyl polyoxyethylene ether), flocculant: anionic and cationic polyacrylamide, dispersant: polyacrylamide). pH regulator, choose oxalic acid

[0045]Prepare microcapsule wall material solution (gelatin) with a concentration of 3%. Add gelatin solution to the prepared cationic enhancer C-PAM, the amount of gelatin added is controlled at 100% (for the core material), and emulsifier (TX-100) is added when stirring at high speed, the amount of emulsifier: 20%, to achieve a solution For emulsification, the rotation speed is generally controlled at 200 rpm, and oxalic acid is added to the emulsified solution, and the pH is controlled at about 5.0, so that the gelati...

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Abstract

The invention relates to a reinforcing agent and a preparation method thereof, and application of the reinforcing agent. The reinforcing agent is made into a microcapsule; i.e., a reinforcing agent core material is wrapped by a wall material so as to form the microcapsule. According to the invention, microencapsulation of the reinforcing agent is realized in virtue of microcapsule technology, so the particle size of the reinforcing agent is increased, and the retention rate of the reinforcing agent is increased (wherein the retention rate is almost 90% or more); moreover, due to protection ofthe wall material of the microcapsule, simultaneous addition of anionic / cationic dry strength agents can be realized, so strength is greatly improved.

Description

technical field [0001] The invention relates to a strengthening agent, a preparation method thereof and the application of the strengthening agent, and the strengthening agent is especially used in the papermaking industry. Background technique [0002] At present, the reinforcing agents used in the paper industry are mainly divided into two categories, one is natural polymer compounds, such as starch, guar gum, chitosan, etc., and the other is polymers synthesized by organic polymers, including different charge properties and different Molecular weight polyacrylamide, polyacrylamide derivatives, polyethyleneimine, etc. [0003] No matter what kind of strengthening agent is applied, it is unavoidable that it needs to be added to the paper machine system in liquid form (even if it is originally solid, it needs to be brewed or boiled to be added as a liquid), which will inevitably lead to the loss of the strengthening agent. The problem of loss will affect the strengthening e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/24D21H17/00D21H17/22D21H17/35D21H17/53D21H21/18
CPCD21H17/00D21H17/22D21H17/24D21H17/35D21H17/53D21H21/18
Inventor 韦丹
Owner 冠宏化工(扬州)有限公司
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