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A preparation process and device of ultra-short fiber for diapers

A technology of ultra-short fiber and preparation process, which is applied in the chemical characteristics of fibers, textiles and papermaking, and non-bundle formation, etc. It can solve the problem of polluting the workshop environment, short fibers are easily lifted by the wind, water absorption and stability need to be improved, etc. problems, to achieve the effect of improving the liquid absorption capacity, the cross-linking structure is remarkable, and the pores are dense.

Active Publication Date: 2022-04-08
嘉兴市新丰特种纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water absorption and stability of the existing polyacrylic SPA still need to be improved, and the existing production process also needs to be optimized, so as to further expand the application of super absorbent resin and super absorbent fiber
Moreover, the existing resin fiber is usually long fiber after spinning, and long fiber and short fiber are usually blended when making care products such as diapers and sanitary napkins, and the short fiber is easy to be blown up with the wind in the existing fiber cutting equipment, resulting in Pollution workshop environment, so it is necessary to develop a new fiber cutting device

Method used

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  • A preparation process and device of ultra-short fiber for diapers
  • A preparation process and device of ultra-short fiber for diapers
  • A preparation process and device of ultra-short fiber for diapers

Examples

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Embodiment 1

[0042] A process for preparing ultra-short fibers for diapers. The ultra-short fibers for diapers include the following raw materials in parts by weight: 80 parts of acrylic acid, 10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 2 parts of nanocellulose, ammonium persulfate 8 parts, N, 1 part of N-methylenebisacrylamide, and its preparation process comprises the following steps:

[0043] S1. Slowly add acrylic acid monomer into 25wt% NaOH solution in a water bath at 2-8°C, stir while adding, and carry out neutralization reaction, and configure acrylic acid monomer neutralizing solution;

[0044] S2. Dissolving 2-acrylamido-2-methylpropanesulfonic acid in distilled water, slowly adding 25wt% NaOH solution, stirring and reacting, and preparing a neutralizing solution of 2-acrylamido-2-methylpropanesulfonic acid;

[0045] S3, adding nanocellulose into ice water at 0-4°C for ultrasonic dispersion for 20 minutes, and preparing a cellulose dispersion;

[0046] S4. Add the cel...

Embodiment 2

[0050] A process for preparing ultra-short fibers for diapers. The ultra-short fibers for diapers include the following raw materials in parts by weight: 70 parts of acrylic acid, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 1.5 parts of nanocellulose, ammonium persulfate 6 parts, N, 2 parts of N-methylenebisacrylamide, its preparation process comprises the following steps:

[0051] S1. Slowly add acrylic acid monomer into 20wt% NaOH solution in a water bath at 2-8°C, stir while adding, and carry out neutralization reaction, and prepare acrylic acid monomer neutralizing solution;

[0052] S2. Dissolving 2-acrylamido-2-methylpropanesulfonic acid in distilled water, slowly adding 20wt% NaOH solution, stirring and reacting, and preparing a neutralizing solution of 2-acrylamido-2-methylpropanesulfonic acid;

[0053] S3, adding nanocellulose into ice water at 0-4°C for ultrasonic dispersion for 20 minutes, and preparing a cellulose dispersion;

[0054] S4. Add the cellul...

Embodiment 3

[0058] A process for preparing ultra-short fibers for diapers. The ultra-short fibers for diapers include the following raw materials in parts by weight: 60 parts of acrylic acid, 130 parts of 2-acrylamido-2-methylpropanesulfonic acid, 1 part of nanocellulose, potassium persulfate 5 parts, N, 2 parts of N-methylenebisacrylamide, and its preparation process comprises the following steps:

[0059] S1. Slowly add acrylic acid monomer into 25wt% NaOH solution in a water bath at 2-8°C, stir while adding, and carry out neutralization reaction, and configure acrylic acid monomer neutralizing solution;

[0060] S2. Dissolving 2-acrylamido-2-methylpropanesulfonic acid in distilled water, slowly adding 25wt% NaOH solution, stirring and reacting, and preparing a neutralizing solution of 2-acrylamido-2-methylpropanesulfonic acid;

[0061] S3, adding nanocellulose into ice water at 0-4°C for ultrasonic dispersion for 10-30 minutes, and preparing a cellulose dispersion;

[0062] S4. Add th...

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Abstract

The invention discloses a preparation process and device for ultra-short fibers of diapers, comprising the following steps: S1, preparing acrylic acid monomer neutralizing liquid; S2, preparing 2-acrylamide-2-methylpropanesulfonic acid neutralizing liquid; S3, configure the cellulose dispersion; S4, add the cellulose dispersion to the reactor, add the initiator, then add the acrylic acid monomer and 2-acrylamido-2-methylpropanesulfonic acid to react; S5, add crosslinking agent to obtain resin gel, and dry the resin gel to obtain superabsorbent resin; S6, superabsorbent resin is pulverized and melt-spun to obtain superabsorbent resin fiber, and finally the superabsorbent resin fiber is processed into ultra-short fiber through fiber cutting equipment. Can. The diaper short fiber prepared by the preparation process of the present invention has ultra-high water absorption and water retention. The preparation device of the present invention can quickly cut off the long resin fiber formed by melt spinning, and the finished short fiber is not easy to be raised in the crushing box, improving the The air environment of the workshop.

Description

technical field [0001] The invention relates to the field of superabsorbent fibers, in particular to a preparation process and device for ultra-short fibers for diapers. Background technique [0002] Super absorbent resin SPA is a kind of water-swellable polymer with strong hydrophilic groups such as shuttle groups and a certain degree of crosslinking. The water absorption capacity of super absorbent resin can reach hundreds of times its own mass. It is fast, and has strong water retention. It is not easy to lose water even under heat and pressure. It has good stability to light, heat, acid and alkali. Personal care products such as disposable diapers, adult incontinence products, and feminine hygiene products. [0003] The production methods of superabsorbent resin are divided into three categories: starch, cellulose and synthetic resin according to the raw materials. Starch and cellulose SPA synthesis is the earliest synthesis process. The production process is relatively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/02C08F220/06C08F220/58C08F222/38D01F6/28D01G1/04
CPCC08F251/02D01F6/28D01G1/04C08F220/06C08F220/585C08F222/385
Inventor 郑海其
Owner 嘉兴市新丰特种纤维有限公司
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