Method for rapidly preparing double-layer structure foam with low residual monomer content, foam material and application thereof

A double-layer structure and foam material technology, applied in the field of foam materials, can solve the problems of poor operability and low foam transparency, and achieve the effects of rapid absorption, large cell size and strong operability

Active Publication Date: 2021-09-24
WANHUA CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] But the inventor found in actual operation, according to the 4 mm thick emulsion coating described in the patent after thermal curing, because the foam transparency obtained after curing is very Low, UV light irradiation can only cure the residual monomers on the surface, and cannot penetrate such a thick foam layer so that the unreac

Method used

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  • Method for rapidly preparing double-layer structure foam with low residual monomer content, foam material and application thereof
  • Method for rapidly preparing double-layer structure foam with low residual monomer content, foam material and application thereof
  • Method for rapidly preparing double-layer structure foam with low residual monomer content, foam material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0136] Example 1

[0137] A) Prepare the lower HIPE emulsion

[0138] Calcium chloride (60.0 g) was dissolved in 1000 ml of deionized water, and the aqueous phase was maintained at 70 ° C; octyl acrylate (13.5 g), styrene (6.0 g), ethylene glycol dimethyl Acrylic (5.0 g) with span20 (2 g), SPAN 80 (3.5 g), 1173 (1.9 g), uniform, uniform, uniform, is uniform.

[0139] The resulting oil is placed in a 2 liter-shaped stainless steel strip sandwich, stirring the oil phase using a disperser, the dispersion disc is 8 cm, and the starting oil is stirred with a rotational speed of 300 rpm, at the same time in 10 minutes. All water phases were added, and the aqueous phase was added during the dispersing tank in the dispersed tank at 70 ° C. As the aqueous phase added the stirring speed gradually increased, the rotation speed was added to around 1000-1500 rpm, and there was a stable Hierarchical high inner phase emulsion.

[0140] B) Preparation of upper HIPE emulsions

[0141] Calcium chlo...

Example Embodiment

[0147] Example 2

[0148] A) Prepare the lower HIPE emulsion

[0149] Calcium chloride (40.0 g), photoinitiator 2959 (purchasing Baili, 0.1 gram) was dissolved in 600 ml of deionized water, and the aqueous phase was maintained at 70 ° C; aloperate (20.0 g) of mixed acrylate (20.0 g), Diethylbenzene (55%, 5.0 g) was uniform and dispersed with CTHROL DPHS (PEG-30 di polyhydroxy stearate, purchasing CRODA, 5.0 g).

[0150] The resulting oil is placed in a 2-liter-shaped stainless steel strip sandwich, and the oil phase is stirred, the dispersion is 8 cm, the dispersion disc is 8 cm, and the drum is stirred with a rotational speed of 200 rpm, at the same time in 10 minutes. All water phase is added, and the aqueous phase is added during the dispersing tank in the dispersed tank at 65 ° C. As the water phase is added, the speed is gradually increased, and the rotation speed is added to around 800-1200 rpm, and there is no stable Hierarchical high inner phase emulsion.

[0151] B) Prepa...

Example Embodiment

[0158] Example 3

[0159] A) Prepare the lower HIPE emulsion

[0160] Calcium chloride (10.0 g) was dissolved in 500 ml of deionized water, and the aqueous phase was maintained at 80 ° C; oxand ester (25.0 g), trimethylolpropane trimethyl methacrylate (2.0 grams) ) Equal oil phase is made with double glycerol fatty acid ester (purchased in Mike, 3.0 g).

[0161] The resulting oil is placed in a 2-liter-shaped stainless steel strip sandwich, and the oil phase is stirred, the dispersion is 8 cm, the dispersion disc is 8 cm, and the drum is stirred with a rotational speed of 200 rpm, at the same time in 10 minutes. All water phases were added, and the aqueous phase was added during the dispersing tank at 80 ° C. As the addition of the aqueous phase gradually increased, the rotation speed was added at 1000-2000 rp / min, and the formation of stable Hierarchical high inner phase emulsion.

[0162] B) Preparation of upper HIPE emulsions

[0163] Calcium chloride (100.0 g) was dissolved ...

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Abstract

The invention relates to a method for preparing double-layer structure foam with low residual monomer content through rapid curing, a foam material and application thereof. The prepared double-layer structure foam can be used for disposable hygiene products; upper-layer foam holes are large and play a role in rapidly absorbing and guiding fluid to other absorption areas; and lower-layer foam holes are small in size and large in specific surface area and has very high wicking capacity and fluid storage capacity. The prepared hygiene product has very good liquid treatment performance, low reverse osmosis, low odor and good softness, is better in fitness to the body compared with a traditional sanitary product, and is comfortable to use.

Description

technical field [0001] The invention relates to the technical field of foam material preparation, in particular to a preparation method of a high internal phase emulsion foam material that can be solidified in a short time, has a double-layer foam structure and has relatively low residual monomers, the foam material and its application. Background technique [0002] A high internal phase emulsion (HIPE) is an ultra-concentrated emulsion dispersion system with a volume fraction of the dispersed phase exceeding 74%, in which the droplets of the dispersed phase are deformed into polyhedral shapes surrounded by a thin continuous phase When separated, when the dispersed phase is aqueous phase droplets and the continuous phase is a polymerizable monomer, after the polymerization reaction occurs, the monomer polymerizes into cell walls to form a porous structure, such as a foam, and the cells of the porous structure The size is determined by the size distribution of the aqueous pha...

Claims

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Application Information

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IPC IPC(8): C08J9/42C08J9/00C08F220/18C08F212/08C08F222/14C08F212/36C08L33/08
CPCC08J9/42C08J9/00C08F220/1808C08F220/1812C08F220/1818C08J2333/08C08J2471/02C08F212/08C08F222/102C08F212/36C08F222/103
Inventor 尉晓丽刘岩
Owner WANHUA CHEM GRP
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