Water-absorbing acrylic ester foam material and preparation method and applications thereof

A technology of acrylate and foam materials, applied in the field of water-absorbing materials, can solve the problems of low reaction rate, high reaction activity, poor selectivity, etc., and achieve production stability, high absorption rate, and prolong curing time Effect

Inactive Publication Date: 2014-12-10
佛山市联塑万嘉新卫材有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Related reports in the prior art show that when preparing acrylate foam materials, persulfates are often used as initiators in consideration of the characteristics of persulfates being cheap, non-toxic, and widely used; The reaction activity of the coupling agent is too high. Under the trigger of persulfate, the reaction speed is too fast, resulting in low reaction yield and poor selectivity, which will have a certain impact on the stability of production.

Method used

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  • Water-absorbing acrylic ester foam material and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Preparation of water-absorbent acrylate foam

[0049] (1) To prepare the oil phase system, weigh 7.2g of isooctyl acrylate, 0.8g of isooctyl methacrylate, 4.8g of ethylene glycol dimethacrylate, 0.4g of hexanediol diacrylate, Tween-80 1.3g, stir the oil phase evenly for use, wherein the mass ratio of isooctyl acrylate to isooctyl methacrylate is 9:1.

[0050] (2) Prepare the water phase system, weigh 0.096g of calcium chloride, add water to 480g to dissolve, at this time, the mass fraction of the electrolyte is 0.02%, and it is ready for use.

[0051] (3) Prepare the initiator phase, weigh 0.66g of TEMPO, add water to 10g to dissolve, and set aside.

[0052] (4) Transfer 320g of the prepared water phase into a 1000ml three-necked flask, start stirring, raise the temperature to 75°C, and keep the stirring speed above 800 rpm, then add the evenly stirred oil phase into the three-necked flask, and wait for the emulsion to become Before it becomes viscous, add 160g of ...

Embodiment 2

[0056] 1. Preparation of water-absorbent acrylate foam

[0057] (1) To prepare the oil phase system, weigh 5.6g of isooctyl acrylate, 0.8g of isooctyl methacrylate, 4.8g of ethylene glycol dimethacrylate, 0.4g of hexanediol diacrylate, Tween-80 1.3g, stir the oil phase evenly for use, wherein the mass ratio of isooctyl acrylate to isooctyl methacrylate is 7:1.

[0058] (2) Prepare an aqueous phase system, weigh 0.48g of calcium chloride, add water to 480g to dissolve it, at this time, the mass fraction of the electrolyte is 0.1%, and it is ready for use.

[0059] (3) Prepare the initiator phase, weigh 0.5g of TEMPO, add water to 10g to dissolve, and set aside.

[0060] (4) Transfer 320g of the prepared water phase into a 1000ml three-necked flask, start stirring, raise the temperature to 75°C, and keep the stirring speed above 800 rpm, then add the evenly stirred oil phase into the three-necked flask, and wait for the emulsion to become Before it becomes viscous, add 160g of...

Embodiment 3

[0064] 1. Preparation of water-absorbent acrylate foam

[0065] (1) To prepare the oil phase system, weigh 8.8g of isooctyl acrylate, 0.8g of isooctyl methacrylate, 4.8g of ethylene glycol dimethacrylate, 0.4g of hexanediol diacrylate, Tween-80 1.3g, stir the oil phase evenly for use, wherein the mass ratio of isooctyl acrylate to isooctyl methacrylate is 11:1.

[0066] (2) Prepare the water phase system, weigh 4.8g of calcium chloride, add water to 480g to dissolve, at this time, the mass fraction of the electrolyte is 1%, and it is ready for use.

[0067] (3) Prepare the initiator phase, weigh 0.8g of TEMPO, add water to 10g to dissolve, and set aside.

[0068] (4) Transfer 320g of the prepared water phase into a 1000ml three-necked flask, start stirring, raise the temperature to 75°C, and keep the stirring speed above 800 rpm, then add the evenly stirred oil phase into the three-necked flask, and wait for the emulsion to become Before it becomes viscous, add 160g of water...

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Abstract

The invention discloses a water-absorbing acrylic ester foam material and a preparation method and applications thereof. A prepared water-absorbing acrylic ester foam material has certain toughness, and is tiny in foam size; the average deionized water absorption rate, average salt water absorption rate, average artificial urine absorption rate and average artificial blood absorption rate of the material are all greater than 15g / g, and the water retention in half a hour is over 80%, therefore, the material is applicable to the dispersion and storage of water-containing fluid; by taking TEMPO as an initiator, the curing time is prolonged, so that the control over the production process is facilitated, thereby favorably prolonging the service life of mixing equipment; and the massive soft water absorbing material disclosed by the invention is extremely suitable for the field of sanitary products.

Description

technical field [0001] The invention belongs to the field of water-absorbing materials, and in particular relates to a water-absorbing acrylate foam material and its preparation method and application. Background technique [0002] In today's hygienic products, the water-absorbing material inside is mainly granular synthetic resin. After absorbing water, urine or blood, it will form a gel, which is easy to form agglomerates, making it difficult to fix in one position. It is very uncomfortable in the actual use process. Comfortable. Therefore, it is of great significance to develop block-shaped soft water-absorbing materials. [0003] Normal blood is composed of blood cells, plasma, etc. The diameter of blood cells is about 8 μm, and the diameter of acrylic acid molecules is much smaller than that of blood cells. Therefore, blood cells are not easily absorbed by the gel-like superabsorbent resin, and can only stay on the surface of the superabsorbent resin, absorbing only ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/16C08F222/14C08F4/32
Inventor 林艳芬
Owner 佛山市联塑万嘉新卫材有限公司
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