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Sodium bismuthate/epoxy resin/glass fiber composite material and its preparation method and its application method in degrading organic wastewater

A technology of epoxy resin and glass fiber, which is applied in the application field of sodium bismuthate/epoxy resin/glass fiber composite material and its preparation, and in the degradation of organic wastewater, which can solve the problems of limited industrial application, difficult recycling, small particle size, etc. problems, to achieve the effect of easy large-scale production and use, easy recycling, and low equipment requirements

Active Publication Date: 2015-09-30
SHANGHAI ACADEMY OF ENVIRONMENTAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the small particle size of the powder, it is not easy to recycle, which limits its industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Sodium bismuthate powder was immersed in an aqueous solution of a silane coupling agent with a mass concentration of 0.5% for 1 hour, taken out and dried for later use. Add stoichiometric ratio of methyl tetrahydrophthalic anhydride to epoxy resin and mix evenly to obtain epoxy resin glue. Take 5g of sodium bismuthate powder and mix it into 1L of epoxy resin glue solution, and ultrasonically disperse at 50°C for 20min. Evenly coat the epoxy resin glue containing sodium bismuthate powder on the non-alkali glass fiber plain weave cloth, then put the impregnated fiber cloth into an oven at 80°C for curing for 3 hours after laminating 3 layers, and release the mold after cooling . Cut the above-mentioned glass fiber multilayer cloth coated with epoxy resin glue containing sodium bismuthate powder into square pieces with a side length of 15 cm to obtain a sodium bismuthate / epoxy resin / glass fiber composite material .

[0023] The sodium bismuthate / epoxy resin / glass fiber ...

Embodiment 2

[0025] Immerse the sodium bismuthate powder in an aqueous solution of 1% silane coupling agent for 50 minutes, take it out and dry it for later use. Add stoichiometric ratio of methyl tetrahydrophthalic anhydride to epoxy resin and mix evenly to obtain epoxy resin glue. Mix 7g of sodium bismuthate powder into 1L of epoxy resin glue, and ultrasonically disperse at 55°C for 15min. Coat the epoxy resin glue solution containing sodium bismuthate powder evenly on the non-alkali glass fiber twill cloth, then laminate the impregnated fiber cloth in a steel mold coated with a release agent for 4 layers and send it to 85°C Cured in an oven for 3.5 hours, and demoulded after cooling. The above-mentioned glass fiber multi-layer cloth coated with epoxy resin glue containing sodium bismuthate powder is cut into isosceles triangle blocks with a side length of 8 cm to obtain a sodium bismuthate / epoxy resin / glass fiber composite material.

[0026] The sodium bismuthate / epoxy resin / glass fi...

Embodiment 3

[0028] Sodium bismuthate powder was immersed in an aqueous solution of silane coupling agent with a mass concentration of 1.5% for 70 minutes, and then dried for later use. Add stoichiometric ratio of methyl tetrahydrophthalic anhydride to epoxy resin and mix evenly to obtain epoxy resin glue. Mix 10 g of sodium bismuthate powder into 1 L of epoxy resin glue, and ultrasonically disperse at 45 °C for 25 min. Evenly coat the epoxy resin glue solution containing sodium bismuthate powder on the non-alkali glass fiber plain weave cloth, then laminate the impregnated fiber cloth for 5 layers in a steel mold coated with a release agent and send it into the 75 Cure in an oven for 2.5 hours, and demould after cooling. Cut the above-mentioned glass fiber multilayer cloth coated with epoxy resin glue containing sodium bismuthate powder into square pieces with a side length of 10 cm to obtain a sodium bismuthate / epoxy resin / glass fiber composite material .

[0029] The sodium bismuthat...

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Abstract

The invention discloses a sodium bismuthate / epoxy resin / glass fiber composite material, a preparation method thereof and an application method for the composite material in degradation of organic waste water. The preparation method comprises the following steps: soaking sodium bismuthate powder in an aqueous solution of a silane coupling agent for treatment, then taking out the sodium bismuthate powder and drying the sodium bismuthate powder for subsequent usage; adding methyl tetrahydrophthalic anhydride into an epoxy resin and carrying out uniform mixing so as to obtain an epoxy resin glue solution; and mixing the treated sodium bismuthate with the epoxy resin glue solution, carrying out ultrasonic dispersion, coating an obtained mixture on glass fiber cloth, folding the glass fiber cloth three to five times in a die, carrying out curing, cooling and demolding and cutting the glass fiber cloth to a certain shape and a certain size. The application method comprises the following steps: uniformly putting the composite material with an appropriate shape and an appropriate size between jacket layers of a glass tube reactor and installing a visible light lamp at the center of an inner tube; allowing organic waste water to enter into a glass jacket, pass through the composite material and undergo a visible light catalytic degradation reaction with sodium bismuthate under irradiation by visible light. The preparation method has the advantages of low requirements on equipment, simple procedures, low energy consumption and convenience in operation; and the composite material is capable of degrading organic waste water in a short period of time.

Description

Technical field: [0001] The invention belongs to the technical field of organic wastewater treatment, and in particular relates to a sodium bismuthate / epoxy resin / glass fiber composite material, a preparation method thereof, and an application method thereof in degrading organic wastewater. Background technique: [0002] In 1972, Fujishim and Honda of the University of Tokyo introduced electricity and light into the catalytic reaction system at the same time, and discovered the photoelectric catalytic decomposition of water on the rutile TiO2 single crystal electrode. This discovery set off a research boom in semiconductor photocatalysis. Created a new era of semiconductor heterogeneous photocatalysis research [Fujishim, K.Honda.Electrochemical photocatalysis of water at asemiconductor electroe[J].Nature.1972,238:37-38.]. In 1976, Carye[CareyJ.H,Lawrence H M.Tosine.Photodechlorination of PCBs in the presence of titanium dioxide in aqueous solutions[J].Enviorn Contam Toxicol....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/26C02F1/30
CPCY02W10/37
Inventor 罗启仕喻恺朱杰张长波王旌
Owner SHANGHAI ACADEMY OF ENVIRONMENTAL SCIENCES
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