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Preparation method and application of high-absorbance honeycomb polyamide membrane

A polyamide and honeycomb technology, which is applied in the field of preparation of honeycomb polyamide films, can solve the problems affecting the performance of polyamide plastics, lack of performance, etc., and achieves low production cost, good film-forming properties, and improved hydrophilicity. Effect

Active Publication Date: 2022-05-06
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because its own hygroscopicity seriously affects the performance of polyamide plastics in practical applications, it is often regarded as a performance defect.

Method used

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  • Preparation method and application of high-absorbance honeycomb polyamide membrane
  • Preparation method and application of high-absorbance honeycomb polyamide membrane
  • Preparation method and application of high-absorbance honeycomb polyamide membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Synthesis of polyamide 6 composite material: first adopt "one pot method", add 3g caprolactam and 27g 6-aminocaproic acid as reaction monomers in a four-necked flask, add 0.5wt% of dried graphene oxide, After heating and melting, stir mechanically to disperse evenly, program temperature rise to 220°C, and react at a constant temperature for 2 hours; then raise the temperature to 260°C, react at a constant temperature for 8 hours, and stop the reaction; quickly pour out the polymerization product from the reaction container, and cool to obtain a composite material .

[0034] 2) Prepare the casting solution: cut the above composite material into small pieces with diagonal pliers, cook in pure water, and dry the product in a vacuum oven to constant weight. Take an appropriate amount of the above-mentioned raw material slices and dissolve them in formic acid solution to prepare a 20wt% casting solution, then add 9wt% pore-forming agent lithium chloride, stir magnetically...

Embodiment 2～6

[0056] Its preparation process is basically the same as Example 1, the only difference is: change the concentration of GO in step 2).

[0057] The following table is the specific implementation scheme of embodiment 2~5

[0058]

Embodiment 7～10

[0060] The preparation process is basically the same as that of Example 1, except that the concentration of the pore-forming agent in step 2) is changed.

[0061]

[0062]

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Abstract

The invention discloses a simple and convenient preparation method of a honeycomb polyamide 6 membrane, and the honeycomb polyamide 6 membrane with rapid self-stretching performance is obtained through grafting modification and mixing of a pore-forming agent through a classic non-solvent induced phase separation process. The existence of the graphene oxide not only changes the structural morphology of the polyamide 6 membrane, but also more importantly, the graphene oxide is used as a photo-thermal conversion layer, and meanwhile, the existence of a large number of pore defects further improves the heat insulation performance of the material. The solar evaporation system greatly improves the steam generation efficiency through a local heating mode; and due to the honeycomb-shaped surface rough structure, the light absorptivity of the system is almost 99.9%. The honeycomb polyamide 6 membrane has the characteristics of low cost, high stability and strong acid and alkali corrosion resistance when being applied to solar evaporation, has excellent performance when being applied to multiple scenes such as seawater desalination, sewage treatment and the like, and shows huge practical application value and excavation potential.

Description

technical field [0001] The invention relates to the field of new materials, in particular to the preparation and application of a honeycomb polyamide membrane with high light absorption rate and high water transportability. Background technique [0002] The development of human society has greatly accelerated the speed of global energy consumption, especially in the natural environment and fresh water resource reserves. Due to the shortage of various resources and energy sources, people began to turn their attention to the exploration of technologies and energy sources that can be sustainable and renewable, such as wind energy, nuclear energy, tidal energy, biomass energy, solar energy, etc.; among them, solar energy is characterized by its huge Energy storage and regeneration capabilities and the convenience of obtaining in nature are recognized as the green energy with the most development value to deal with global environmental pollution and water resource shortage in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/08C08G69/14C08K3/04C08J5/18C08L77/02
CPCC08G69/08C08G69/14C08K3/042C08J5/18C08J2377/02Y02E60/10
Inventor 陈英波徐蛟鹏
Owner TIANJIN POLYTECHNIC UNIV
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