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Method for preparing gel material from waste thermosetting unsaturated polyester with one-pot method, gel material and application of gel material

A gel material, unsaturated technology, applied in the environmental field, achieves the effect of low cost, simple operation, and easy industrialization

Active Publication Date: 2018-08-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to make waste thermosetting unsaturated polyester into a gel material with high-efficiency adsorption performance in one pot, and apply it to industrial wastewater treatment, so as to realize high-value utilization of waste and solve the problems of solid waste and industrial waste at the same time. Environmental problems caused by waste water, etc.

Method used

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  • Method for preparing gel material from waste thermosetting unsaturated polyester with one-pot method, gel material and application of gel material
  • Method for preparing gel material from waste thermosetting unsaturated polyester with one-pot method, gel material and application of gel material
  • Method for preparing gel material from waste thermosetting unsaturated polyester with one-pot method, gel material and application of gel material

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Effect test

Embodiment 1

[0029] Under normal pressure, waste thermosetting unsaturated polyester was soaked in dichloromethane for 12 hours, and then filtered to obtain a pretreatment sample. Mix 45 mL of ethylene glycol and 5 mL of water to obtain a reaction solvent, and add potassium carbonate to the reaction solvent to form a reaction liquid system with a mass concentration of 6%. Add 1g of unsaturated polyester pre-treatment sample to the reaction solution system, heat it to 140°C for 12 hours under the condition of magnetic stirring, wash and soak the solid phase product obtained by filtering with water after the reaction to obtain a gel, and then in Freeze-dry at -40°C for 24 hours to obtain dry gel; weigh 10 mg of dry gel and put it into 20 mL of 300 mg / L methylene blue solution with a pH of 8, absorb for 500 min under shaking conditions, and the dye removal rate is 97.8%. The adsorption capacity of the material was 586.8 mg / g.

Embodiment 2

[0031] Under normal pressure, the waste thermosetting unsaturated polyester was mechanically pulverized, soaked in dichloromethane for 18 hours, and then filtered to obtain a pretreatment sample. Mix 45mL of ethylene glycol and 5mL of water to obtain a reaction solvent, and add potassium carbonate to the reaction solvent to form a reaction liquid system with a mass concentration of 3%. Add 1g of unsaturated polyester pre-treatment sample to the reaction solution system, heat it to 140°C for 15 hours under the condition of magnetic stirring, wash and soak the solid phase product obtained after the reaction with water to obtain a gel, and then in Freeze-dry at -40°C for 24 hours to obtain xerogel material; weigh 10 mg of xerogel and put it into 20 mL of 50 mg / L methylene blue solution with a pH of 7, and absorb it for 60 min under shaking conditions, the dye removal rate is 100.0%, and The adsorption capacity of the gum material is 100mg / g.

Embodiment 3

[0033] Under normal pressure, waste thermosetting unsaturated polyester was soaked in chloroform for 15 hours, and then filtered to obtain a pretreatment sample. Mix 45 mL of ethylene glycol and 5 mL of water to obtain a reaction solvent, and add potassium carbonate to the reaction solvent to form a reaction liquid system with a mass concentration of 5%. Add 1g of unsaturated polyester pre-treatment sample to the reaction solution system, heat it to 140°C for 12 hours under the condition of magnetic stirring, wash and soak the solid phase product obtained by filtering with water after the reaction to obtain a gel, and then in Freeze-dry at -40°C for 24 hours to obtain xerogel material; weigh 10 mg of xerogel and put it into 20 mL of 200 mg / L methylene blue solution with a pH of 8, and absorb it under shaking conditions for 380 min. The dye removal rate is 99.6%. The adsorption capacity of the gum material was 398.4 mg / g.

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Abstract

The invention discloses a method for preparing a gel material from waste thermosetting unsaturated polyester with a one-pot method, a gel material and an application of the gel material. According tothe method, firstly, the thermosetting unsaturated polyester is pretreated by crushing, normal-temperature soaking and the like, the treated thermosetting unsaturated polyester is put in a reaction liquid system for normal-pressure stirring, is heated to 40-200 DEG C and reacts for 0.1-24 h, filtration and separation are performed after an reaction ends, and a solid-phase product is obtained; gelis obtained through aftertreatment, and dry gel is obtained after drying. The gel material can efficiently and rapidly remove toxic substances in industrial wastewater and has the advantages of high adsorption rate, high adsorption and the like. On the basis of the environment-friendly concept of using waste to treat waste, the method has mild operation conditions, a used reaction solvent is safe,stable and environmentally friendly, the obtained gel material has excellent adsorption performance, low-cost and high-value utilization of the waste thermosetting unsaturated polyester can be realized, and the method is applicable to industrial production.

Description

technical field [0001] The invention relates to the field of environmental technology, in particular to the recycling of solid waste and the treatment of industrial wastewater, in particular to a method for preparing a gel material from waste thermosetting unsaturated polyester in one pot, the gel material and its application. Background technique [0002] In recent years, due to its excellent mechanical properties, corrosion resistance and processing properties, thermosetting unsaturated polyester has become one of the most used and widely used resin varieties in the thermosetting resin industry. However, during the mass production and application of unsaturated polyester, a large amount of solid waste is inevitably generated. Since the synthetic raw materials of these thermosetting unsaturated polyesters all come from petroleum, these resin wastes are potentially high-value organic matter. However, due to its three-dimensional network structure, thermosetting unsaturated ...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08J3/09B01J20/26B01J20/28B01J20/30C02F1/28C02F101/30C08L67/06
CPCB01J20/262B01J20/28047C02F1/285C02F2101/308C08J3/075C08J3/095C08J3/096C08J2367/06
Inventor 王玉忠王雄雷徐世美安文丽
Owner SICHUAN UNIV
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