Water absorbent resin suitable for wood-pulp-core paper diaper and preparing method thereof

A technology of water-absorbent resin and diapers, applied in applications, absorbent pads, medical science, etc., can solve the problems of easy fracture, large local absorption, poor air permeability of diapers, etc., and achieve the effect of strengthening the degree of cross-linking and improving the liquid permeability

Active Publication Date: 2018-03-30
LUNALER HEALTH TECH GUANGZHOU CO LTD
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the fluff pulp has good hydrophilicity and excellent drainage performance, the wood pulp core absorbs urine faster; but the fluff pulp will expand rapidly after absorbing water, making the wood pulp core absorb water compared to the composite core. The body needs to be thick, so the diapers with wood pulp cores will have the problem of easy breakage and spinning after absorbing water; and the air permeability of the diapers is poor, and the broken surface is not absorbent, resulting in uneven absorption of the diapers
[0004] For the wood pulp core used in diapers, if the wood pulp core is made of a water-absorbing...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water absorbent resin suitable for wood-pulp-core paper diaper and preparing method thereof
  • Water absorbent resin suitable for wood-pulp-core paper diaper and preparing method thereof
  • Water absorbent resin suitable for wood-pulp-core paper diaper and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A water-absorbent resin suitable for paper diapers with a wood pulp core, comprising the following components in parts by weight:

[0037] 30 parts of acrylic acid, 30 parts of 32% sodium hydroxide aqueous solution, 7.5 parts of 40% mass fraction of sodium metasilicate aqueous solution, 2 parts of acrylamide, cross-linking agent N, N-methylenebisacrylamide and polyethylene glycol 800 0.5 parts of the mixture, 0.5 parts of the photoinitiator 2-hydroxy-2-a-1-phenyl-1-acetone, 0.1 parts of the initiator sodium azobisisobutyramide hydrochloride, 0.4 parts of sodium metaaluminate, surface treatment solution 4 parts, 20 parts of deionized water.

[0038] The preparation method comprises the following steps:

[0039] (1) Mix 30 parts of acrylic acid and 20 parts of deionized water, then add 30 parts of 32% sodium hydroxide aqueous solution for neutralization reaction, and control the reaction temperature to less than 40°C;

[0040] (2) Add 7.5 parts of 40% mass fraction of s...

Embodiment 2

[0046] A water-absorbent resin suitable for paper diapers with a wood pulp core, comprising the following components in parts by weight:

[0047] 30 parts of acrylic acid, 40 parts of 32% sodium hydroxide aqueous solution, 12.5 parts of 40% mass fraction of sodium metasilicate aqueous solution, 5 parts of acrylamide, cross-linking agent N,N-methylenebisacrylamide and polyethylene glycol 800 1 part of the mixture, 0.8 part of the photoinitiator 2-hydroxy-2-a-1-phenyl-1-acetone, 0.2 part of the initiator sodium azobisisobutylamidine hydrochloride, 0.6 part of sodium metaaluminate, and 6 parts of the surface treatment solution Parts, 25 parts of deionized water.

[0048] (1) Mix 30 parts of acrylic acid and 25 parts of deionized water, then add 40 parts of 32% sodium hydroxide aqueous solution for neutralization reaction, and control the reaction temperature to less than 40°C;

[0049] (2) 12.5 parts of 40% mass fraction of sodium metasilicate aqueous solution, 5 parts of acryla...

Embodiment 3

[0055] A water-absorbent resin suitable for paper diapers with a wood pulp core, comprising the following components in parts by weight:

[0056] 40 parts of acrylic acid, 50 parts of 32% sodium hydroxide aqueous solution, 20 parts of 40% mass fraction of sodium metasilicate aqueous solution, 8 parts of acrylamide, cross-linking agent N, N-methylenebisacrylamide and polyethylene glycol 800 1.5 parts of the mixture, 1 part of the photoinitiator 2-hydroxy-2-a-1-phenyl-1-acetone, 0.3 parts of the initiator sodium azobisisobutylamidine hydrochloride, 1 part of sodium metaaluminate, and 8 parts of the surface treatment solution parts, 30 parts of deionized water.

[0057] (1) Mix 40 parts of acrylic acid and 30 parts of deionized water, then add 50 parts of 32% sodium hydroxide aqueous solution for neutralization reaction, and control the reaction temperature to less than 40°C;

[0058] (2) 20 parts of 40% mass fraction of sodium metasilicate aqueous solution, 8 parts of acrylamid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a water absorbent resin suitable for a wood-pulp core and a preparing method thereof. The preparing method includes the following steps that after acrylic acid and deionized water are mixed, then a neutral reaction is carried out with a sodium hydroxide solution, the reaction is completed, then a sodium metasilicate water solution, acrylamide, a cross-linking agent and an initiating agent are sequentially added, and a milk-white mixed solution is obtained; nitrogen is introduced, mixed liquid is subjected to a polymerization reaction under ultraviolet rays, and transparent colloid is obtained; the colloid is granulated, dried and smashed, and resin powder is obtained; the resin powder is taken and evenly stirred with sodium metaaluminate, surface treatment liquid isadded for treatment, and the product is obtained. According to the water absorbent resin suitable for the wood-pulp core and the preparing method thereof, nanoscale silicon dioxide is generated in the neutral process and evenly dispersed in a reaction system and is capable of improving the liquid passing performance and the diffusivity of the water absorbent resin; the water absorbent resin prepared with the method is low in residual monomer, small in reverse osmosis amount, large in water retaining capacity, high in particle strength after water absorption, loose and particularly suitable for a wood-pulp-core paper diaper.

Description

technical field [0001] The invention relates to the field of water-absorbing resins, in particular to a water-absorbing resin suitable for wood pulp core paper diapers and a preparation method thereof. Background technique [0002] Super Absorbent Polymer (SAP) is a new type of functional polymer material with a large number of hydrophilic groups. It has a high water absorption function of absorbing water hundreds to thousands of times heavier than itself, and has excellent water retention performance. Once it absorbs water and swells into a hydrogel, it is difficult to separate the water even if it is pressurized. Water-absorbing resins are widely used and have a very broad application prospect. The main purpose is mainly sanitary materials, accounting for about 70% of the total market. Water-absorbent resins are mainly used in sanitary products such as diapers, sanitary napkins, breast pads, mattresses, etc. The amount of water-absorbent resin in paper diapers accounts ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61F13/53A61F13/496A61F13/15A61L15/60A61L15/24A61L15/18
CPCA61F13/15577A61F13/496A61F13/53A61F2013/530007A61F2013/530481A61L15/18A61L15/24A61L15/60C08L33/02
Inventor 周彧峰
Owner LUNALER HEALTH TECH GUANGZHOU CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap