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Polyving alcohol composite hydrogel and preparation method thereof

A composite hydrogel and polyvinyl alcohol technology, which is applied in the field of reinforced and toughened polyvinyl alcohol composite hydrogel and its preparation, polyvinyl alcohol composite hydrogel and its preparation field, can solve the problem of incompatibility between strength and toughness, etc. problems, to achieve the effect of easy delivery and homogenization, easy operation, and improved mechanical properties

Active Publication Date: 2014-03-26
CHINA PETROCHEMICAL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of reinforced and toughened polyvinyl alcohol composite hydrogel to solve the inadequacy of polyvinyl alcohol hydrogel strength and toughness in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A polyvinyl alcohol composite hydrogel, the raw material components include: 1599 polyvinyl alcohol 30g, sodium alginate 50g, nano clay 3g, nitrile rubber 3g, tris(dioctylpyrophosphoryl)isopropyl titanate 0.15 g, water 200g.

[0035] A preparation method of polyvinyl alcohol composite hydrogel, comprising the following steps:

[0036] A. Raw material preparation

[0037] Surface treatment of inorganic nanoparticles: Disperse 0.15 g of isopropyl tris(dioctylpyrophosphoryl) titanate and 3 g of nanoclay in a solution of distilled water and absolute ethanol with a volume ratio of 1:9, and ultrasonically treat at 50°C for 1 h , and then suction-filtered and dried at 65°C for 2 hours to obtain surface-treated nanoclay.

[0038] Preparation of polyvinyl alcohol solution: Dissolve 30g of 1599 polyvinyl alcohol and 50g of sodium alginate in 200g of distilled water at 70°C, mix well, and cool to room temperature.

[0039] Preparation of boric acid aqueous solution containing c...

Embodiment 2

[0043] A polyvinyl alcohol composite hydrogel, raw material components include: 2499 polyvinyl alcohol 90g, sodium alginate 0.1g, mica powder 2.5g, polyurethane elastomer 18g, g-aminopropyltriethoxysilane 0.075g, 1800g of water.

[0044] A preparation method of polyvinyl alcohol composite hydrogel, comprising the following steps:

[0045] A. Raw material preparation

[0046] Surface treatment of inorganic nanoparticles: Disperse 0.075 g of g-aminopropyltriethoxysilane and 2.5 g of inorganic nanoparticles in a solution with a volume ratio of distilled water and absolute ethanol of 1:9, ultrasonically treat at 50 ° C for 1 h, and then Suction filtration and drying at 60° C. for 2 hours to obtain surface-treated nano-graphite.

[0047] Preparation of polyvinyl alcohol solution: Dissolve 90 g of 2499 polyvinyl alcohol and 0.1 g of sodium alginate in 1800 g of distilled water at 99°C, mix well, and cool to room temperature.

[0048] Preparation of boric acid aqueous solution con...

Embodiment 3

[0052] A polyvinyl alcohol composite hydrogel, the raw material components include: 80g of 1788 polyvinyl alcohol, 16g of sodium alginate, 12g of carbon nanotubes, 4g of polyacrylate rubber, 0.15g of dioctyl phosphate, and 1500g of water.

[0053] A preparation method of polyvinyl alcohol composite hydrogel, comprising the following steps:

[0054] A. Raw material preparation

[0055] Surface treatment of inorganic nanoparticles: Disperse 0.075 g of dioctyl phosphate and 12 g of carbon nanotubes in a solution of distilled water and absolute ethanol with a volume ratio of 1:9, ultrasonically treat at 45°C for 1.5h, then suction filter and dry at 70°C 2h, the surface-treated carbon nanotubes were obtained.

[0056] Preparation of polyvinyl alcohol solution: Dissolve 80 g of 1788 polyvinyl alcohol and 16 g of sodium alginate in 1500 g of distilled water at 80°C, mix well, and cool to room temperature.

[0057] Preparation of boric acid aqueous solution containing curing agent: ...

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Abstract

The invention relates to polyving alcohol composite hydrogel and a preparation method thereof. The polyving alcohol composite hydrogel is prepared from the following raw materials in parts by weight through cross-linking solidifying compounding of boric acid solution containing solidifier: 30 to 90 parts of polyving alcohol, 0.1 to 50 parts of sodium alginate, 0.1 to 20 parts of inorganic nanoparticles, 1 to 20 parts of elastomer material, 0.5 to 5 parts of coupling agent and 200 to 2000 parts of water, wherein the degree of polymerization of polyving alcohol is 400 to 3000, and the alcoholysis degree is 75 to 99 percent. The polarity elastomer material and the inorganic nanoparitcles which are processed through the coupling agent are compounded with the polyving alcohol, the mechanical strength and flexibility of the polyving alcohol hydrogel can be improved through the toughening effect of the elastomer material and the synergistic effect of the inorganic nanoparticles, so that the service life is prolonged, and the requirement of the real application on the mechanical performance can be met; the preparation method of the polyving alcohol composite hydrogel is simple in process, easy to operate and applicable to the mass production.

Description

technical field [0001] The invention relates to a polyvinyl alcohol composite hydrogel and a preparation method thereof, in particular to a reinforced and toughened polyvinyl alcohol composite hydrogel and a preparation method thereof, belonging to the field of polymer preparation and processing. Background technique [0002] Polyvinyl alcohol hydrogel is chemically inactive, non-toxic, has good biocompatibility, excellent mechanical properties, high water absorption, and is easy to process and shape. It is widely used in agriculture, forestry, medicine, daily chemical industry, environmental protection and desert control. and other fields. In terms of agriculture, forestry and horticulture, polyvinyl alcohol gel has high water absorption and strong water retention, and can be used as a plant growth promoter, seedling transplanting preservative, etc., making it have broad application prospects in agriculture, forestry, and desert greening; In terms of medicine and daily che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L5/04C08L75/04C08L9/02C08L33/00C08K13/06C08K9/06C08K9/04C08K3/34C08K3/04C08K7/00C08K3/38C08J3/075
Inventor 叶林胡安杨张毅黎园赵晓文邢凯何志群李国斌陈仕萍胡剑波
Owner CHINA PETROCHEMICAL CORP
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