A kind of epoxy-based macroporous/mesoporous polymer material and preparation method thereof

A polymer material, epoxy-based technology, applied in the direction of alkali metal oxides/hydroxides, alkali metal compounds, chemical instruments and methods, etc., to achieve the effects of extreme volatility, good mechanical strength, and low volatility

Active Publication Date: 2020-12-22
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter how the compatibility is adjusted, it is difficult to obtain a material with a wide pore size distribution in one preparation reaction.

Method used

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  • A kind of epoxy-based macroporous/mesoporous polymer material and preparation method thereof
  • A kind of epoxy-based macroporous/mesoporous polymer material and preparation method thereof
  • A kind of epoxy-based macroporous/mesoporous polymer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 35.0g of trimethylolpropane is heated and completely melted to a transparent and flowing liquid, then add 3.5g of epoxy resin E-51 and stir vigorously to obtain a viscous liquid, then add 0.44g of diethylenetriamine, cool with ice water and stir vigorously Make it release heat evenly to obtain a viscous semi-solid containing a large number of tiny crystals, pour it into a plastic mold, and place it in the refrigerator for further cooling and crystallization for 3 hours after being completely solidified to obtain a hard white solid, which is solidified at 45°C for 12 hours, soaked in water repeatedly until the trimethylolpropane was completely removed, then dried in vacuum at room temperature to obtain a white foam material.

Embodiment 2

[0023] 60.0g of trimethylolpropane was heated and melted until it became a transparent and flowable liquid, and 3.0g of epoxy resin E-51 was added to stir and disperse, and 0.44g of diethylenetriamine was added, cooled with ice water and vigorously stirred to make the exotherm uniform, and viscous Thick semi-solid, which contains a large number of tiny crystals, poured into a plastic mold, after being completely solidified, placed in the refrigerator for further cooling and crystallization for 3 hours, after freezing, a hard white solid was obtained, solidified at 45°C for 12 hours, soaked in water repeatedly After the trimethylolpropane was completely removed, it was dried in vacuum at room temperature to obtain a white foamy material.

Embodiment 3

[0025] Heat and melt 90.0g trimethylolpropane until it becomes a transparent and flowing liquid, add 3.0g epoxy resin E-51 and stir to disperse, then add 0.50g diethylenetriamine, keep stirring to obtain a good dispersion, cool with ice water and vigorously Stir to make it release heat evenly to obtain a viscous semi-solid, which contains a large number of tiny crystals, pour it into a plastic mold, and place it in the refrigerator for further cooling and crystallization for 4 hours after being completely solidified. After freezing, a hard white solid is obtained. It was cured at ℃ for 14 hours, soaked in water repeatedly until the trimethylolpropane was completely removed, and then dried in vacuum at room temperature to obtain a white foam material.

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Abstract

The invention relates to an epoxy based macroporous / mesoporous polymer material and a preparation method thereof. The material is prepared by solidifying an epoxy resin / organic dispersion system in asolid state and washing the system to remove the dispersant. The material comprises macro holes with a size of 1 to 50 [mu]m and mesopores with an average pore size of 20 nm. The specific surface areareaches 230 m<2> / g or more, the porosity is greater than 90%, and the appearance density is less than 0.1 g / mL. During the preparation process, TMP(trimethylolpropane) is taken as the dispersant; dueto the proper affinity between TMP and epoxy resin E-51, the epoxy resin is dispersed; during the cooling process, pores are formed by the continuous crystallization; finally, TMP is water soluble and is washed off; pores can be formed by continuous crystallization without using any template and surfactant; epoxy resin is solidified in a solid state, the influence of phase separation on materialperformance is avoided; the continuity of internal morphology is guaranteed, at the same time, unique morphology features are formed in the material, the material is prepared without using any specialequipment or special condition, only one dispersant namely TMP is used, and moreover, TMP is cheap, barely volatile, and pollution free, can be recovered, and completely meets the requirements of green chemistry.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to an epoxy-based macroporous / mesoporous polymer material and a preparation method thereof. The material is a porous material obtained based on a heterogeneous curing mechanism of epoxy resin. It has a wide pore size distribution from macropores to mesopores and a high specific surface area. Its preparation method is based on the principle of crystallization, and has the characteristics of simple method, low cost, high efficiency and environmental friendliness. Background technique [0002] In separation science, a large number of polymer porous materials have been prepared and used as chromatographic fillers in the form of monolithic columns. This material requires its pore size distribution to be as uniform as possible, and the three-dimensional pores can be continuously connected, which is conducive to the stable flow of liquid in the chromatographic column. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30
CPCB01J20/265B01J20/28061B01J20/28083B01J20/28095
Inventor 李赛赛张瑞丰靳鑫煜李艳江峰肖通虎龙能兵
Owner NINGBO UNIV
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