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Hydrophilic sponge material and preparation method thereof

A hydrophilic sponge and hydrophilic technology, which is applied in the field of hydrophilic sponge materials and its preparation, can solve the problems such as the decline of the physical properties of the sponge, and achieve the effects of excellent mechanical properties, improved hydrophilic properties, and good hydrophilic properties

Inactive Publication Date: 2020-04-21
江苏世丰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the traditional hydrophilic sponge can meet the excellent requirements of hydrophilic and water absorption, the selection of excellent materials seriously reduces the physical properties of the sponge.

Method used

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  • Hydrophilic sponge material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The present embodiment hydrophilic sponge is made from the raw material of following parts by weight:

[0040] 100 parts of PPG, 25 parts of POP, 25 parts of hydrophilic polyols, 6.2 parts of water, 0.3 parts of bis(2-dimethylaminoethyl) ether amine catalyst, 0.4 parts of stannous octoate catalyst, 2 parts of hydrophilic silicone oil (9205) , Hydrophilic additive (HQ990) 12 parts, TDI 85 parts.

[0041] Mix and foam the above raw materials evenly at room temperature, the stirring speed is 3000rpm, the pressure is 40bar, and the foaming speed is 3-5m / min to form a strip or block foam sponge. After aging at room temperature for 24-30h, it becomes a hydrophilic sponge material .

[0042] The prepared hydrophilic sponge material was tested, and the test results are shown in Table 1.

Embodiment 2

[0044] 80 parts of PPG, 5 parts of POP, 15 parts of hydrophilic polyol, 2.6 parts of water, 0.28 parts of bis(2-dimethylaminoethyl) ether amine catalyst, 0.28 parts of stannous octoate catalyst, 1.2 parts of hydrophilic silicone oil (9205) , 8 parts of hydrophilic additive (HQ990), 85 parts of TDI.

[0045] Mix and foam the above raw materials evenly at room temperature, the stirring speed is 4000rpm, the pressure is 60bar, and the foaming speed is 3-5m / min to form a strip or block foam sponge. After aging at room temperature for 24-30h, it becomes a hydrophilic sponge material .

[0046] The prepared hydrophilic sponge material was tested, and the test results are shown in Table 1.

Embodiment 3

[0048] 0 part of PPG, 25 parts of POP, 75 parts of hydrophilic polyol, 2.5 parts of water, 0.55 part of bis(2-dimethylaminoethyl)ether amine catalyst, 55 parts of MDI.

[0049] Mix and foam the above raw materials evenly at room temperature, the stirring speed is 4000rpm, the pressure is 60bar, and the foaming speed is 3-5m / min to form a strip or block foam sponge. After aging at room temperature for 24-30h, it becomes a hydrophilic sponge material .

[0050] The prepared hydrophilic sponge material was tested, and the test results are shown in Table 1.

[0051] The formulations and physical properties of Examples 1-3 are shown in Table 1 below.

[0052] Table 1:

[0053]

[0054] The polyurethane sponge material (5g) that embodiment 1-3 obtains is put into water, 5~10s can sink to the bottom of the water, and through testing, the water absorption of the polyurethane sponge material prepared in embodiment 1 is 50g / g; Embodiment 2 The water absorption of the polyurethane sp...

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Abstract

The invention belongs to the field of polyurethane flexible foam sponge materials, and particularly relates to a hydrophilic sponge material and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing and foaming polyether polyol (PPG), polymer polyol (POP), hydrophilic polyol, water, hydrophilic silicone oil, a catalyst, a hydrophilic aid and diisocyanate, carrying out one-step foaming and molding, and conducting curing for one day under the condition of standard temperature and humidity to obtain the hydrophilic sponge material. The hydrophilic sponge material disclosed by the invention has the advantages of rapid water absorption, high air permeability, capability of sinking into a water bottom after saturated water absorption and the like.

Description

technical field [0001] The invention belongs to the field of polyurethane soft foam sponge materials, and in particular relates to a hydrophilic sponge material and a preparation method thereof. [0002] technical background [0003] PCT Patent Publication WO 2016 / 044512 describes a hydrophilic polyurethane foam prepared using a polyol mixture of unvulcanized and vulcanized polyols; PCT Patent Publication WO 2016 / 044073 describes a hydrophilic polyurethane sponge, which The core point of polyurethane sponge is the use of granular fillers with high water absorption; the patent application number 201711060915.1 uses the impregnation reaction method to make the sponge hydrophilic; the patent application number 201780019235.7 and 201811168930.2 involve non-foaming polyurethane hydrophilic with different process formula routes Preparation of materials. The invention relates to the preparation of a large-volume foaming polyurethane hydrophilic material. All selected raw materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/32C08G18/40C08G18/48C08G18/61C08G18/63C08G18/65C08J9/08C08G101/00
CPCC08G18/6674C08G18/6677C08G18/4072C08G18/632C08G18/48C08G18/61C08G18/3206C08G18/6564C08G2110/0083
Inventor 阮国桥
Owner 江苏世丰新材料有限公司
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