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Preparation method and application of hollow MnO2@SiO2 nanomaterial modified polyurethane foam

A technology of polyurethane foam and nanomaterials, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve problems such as super-hydrophobic performance damage, achieve low cost, improve hydrophobicity, and improve The effect of oil absorption performance

Active Publication Date: 2017-06-30
南京贸群新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material has a high oil absorption capacity and can absorb oil products about 13 to 18 times its own weight. When the material is extruded to a deformation of 75%, the quick recovery of oil products and the recycling of materials are realized, reaching the oil-water The purpose of selective separation of mixtures, but the superhydrophobic properties of the material are destroyed after 9 cycles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Hollow MnO 2 @SiO 2 Preparation of Nanomaterials

[0037] A. According to the ratio of adding 100 mL 2 M ferric chloride solution to every 90 mL 6 M sodium hydroxide solution, after ultrasonic stirring for 15 min, pour the mixed solution into a polytetrafluoroethylene-lined stainless steel reaction kettle, Hydrothermal reaction at 100°C for 5 days, filtered after cooling, washed with distilled water, and dried in an oven at 50°C to obtain solid iron oxide;

[0038] B. Add 40 mL of deionized water, 6 mL of ammonia water and 0.5 mL of tetraethyl orthosilicate to each 160 mL of ethanol to form a mixed solution, corresponding to the addition of 0.1 g of iron oxide, and react under mechanical stirring for 3 h, by separating, washing and drying to obtain silicon dioxide-coated iron oxide. The obtained solid was added to 4 M hydrochloric acid and reacted at 100°C for 24 h, filtered, washed and dried to obtain hollow silica;

[0039] C. Add 120 mL of deionized water and...

Embodiment 2

[0049] (1) Hollow MnO 2 @SiO 2 Preparation of Nanomaterials

[0050] A. According to the ratio of adding 100 mL 2 M ferric chloride solution to every 90 mL 6 M sodium hydroxide solution, after ultrasonic stirring for 15 min, pour the mixed solution into a polytetrafluoroethylene-lined stainless steel reaction kettle, Hydrothermal reaction at 120°C for 5 days, filtered after cooling, washed with distilled water, and dried in an oven at 50°C to obtain solid iron oxide;

[0051] B. Add 40 mL of deionized water, 6 mL of ammonia water and 0.6 mL of tetraethyl orthosilicate to each 160 mL of ethanol to form a mixed solution, corresponding to the addition of 0.1 g of iron oxide, and react under mechanical stirring for 5 h, by separating, washing and drying to obtain silicon dioxide-coated iron oxide. Add the obtained solid to 6 M hydrochloric acid and react at 100°C for 24 h, filter, wash and dry to obtain hollow silica;

[0052] C. Add 120 mL of deionized water and 6 g of potass...

Embodiment 3

[0062] (1) Hollow MnO 2 @SiO 2 Preparation of Nanomaterials

[0063] A. According to the ratio of adding 100 mL 2 M ferric chloride solution to every 90 mL 6 M sodium hydroxide solution, after ultrasonic stirring for 15 min, pour the mixed solution into a polytetrafluoroethylene-lined stainless steel reaction kettle, Hydrothermal reaction at 100°C for 8 days, filtered after cooling, washed with distilled water, and dried in an oven at 50°C to obtain solid iron oxide;

[0064] B. Add 40 mL of deionized water, 6 mL of ammonia water and 0.6 mL of tetraethyl orthosilicate to each 160 mL of ethanol to form a mixed solution, corresponding to the addition of 0.1 g of iron oxide, and react under mechanical stirring for 3 h, by separating, washing and drying to obtain silicon dioxide-coated iron oxide. The obtained solid was added to 4 M hydrochloric acid and reacted at 100°C for 48 h, filtered, washed and dried to obtain hollow silica;

[0065] C. Add 120 mL of deionized water and...

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Abstract

The invention belongs to the field of functional polymer materials, and relates to preparation of compound polyurethane foam, in particular to a preparation method and application of hollow MnO2@SiO2 nanomaterial modified polyurethane foam. The method comprises the steps of preparing iron oxide by a hydrothermal method, wrapping silicon dioxide by a template method, preparing MnO2@SiO2 by the hydrothermal method, performing modification by using a silane coupling agent KH570 to form a hydrophobic and oleophylic modified MnO2@SiO2 nanomaterial, and finally, uniformly dispersing the modified MnO2@SiO2 nanomaterial in polyurethane foam for free foaming to form the polyurethane foam with good oil absorbency. The hollow MnO2@SiO2 nanomaterial-polyurethane foam 3D (three dimensional) oil absorption material with a 3D porous structure is obtained by compounding the hydrophobic modified hollow MnO2@SiO2 nanomaterial and the polyurethane foam material; the hydrophobicity of a polyurethane material is improved obviously; an oil storage space is increased; and the oil absorbency is effectively improved. The method and the application have the characteristics of simple operation, low cost, environment friendliness, easy separation, greenness, environmental protection, energy conservation and relatively good practicality.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and relates to the preparation of composite polyurethane foam, in particular to a hollow MnO 2 @SiO 2 Preparation method and application of nanometer material modified polyurethane foam. Background technique [0002] In recent years, with the widespread use and transportation of crude oil and petroleum products, oil spills of various sizes and scales have been increasing, and the occurrence of oil spills is on the rise, posing a great threat to the environment. The crude oil spill in the Gulf of Mexico has attracted widespread attention. If the oil spill cannot be dealt with in a timely and effective manner, it will have a long-term impact on the local fishery resources and ecological environment. Nowadays, not only crude oil pollution is serious, but also the treatment of dye-containing wastewater produced by textile, paper and leather industries has greatly aroused social concern. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/36C02F101/32
CPCB01J20/0222B01J20/103B01J20/265C02F1/285C02F2101/32C02F2101/36
Inventor 邱凤仙袁登森申阿慧陈宇徐广远张涛
Owner 南京贸群新材料有限公司
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