A kind of preparation method of superhydrophobic superlipophilic ultralight sponge

A super-lipophilic and super-hydrophobic technology, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of high cost of chemical modification reagents, cumbersome process, and increased preparation and use costs.

Active Publication Date: 2016-03-30
中科瑞丽分离科技无锡有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As reported by Nguyen et al. (EnergyEnviron.Sci., 2012, 5, 7908-7912), graphene and polydimethylsiloxane (PDMS) nanocomposites were coated on the melamine sponge skeleton by impregnation. A hydrophobic melamine sponge is obtained, and the material can absorb 100 times the weight of the organic solvent itself; however, the hydrophobic melamine sponge obtained by this method has poor oil absorption stability, and the oil absorption performance decreases significantly after recycling; in addition, The modification of the material involves the preparation of graphene and its dispersion in the polymer, which greatly increases the cost of material preparation and use.
Recently, Ruan et al. also reported (Angew.Chem.Int.Ed., 2014, 53, 5556~5560) to modify melamine sponge with polydopamine and perfluorododecylthiol to obtain superhydrophobic and superlipophilic properties. melamine sponge, but this method involves multi-step chemical reactions such as the polymerization of dopamine on the surface of melamine sponge and the grafting of perfluorododecanethiol on polydopamine. The process is cumbersome and the cost of chemical modification reagents used is relatively high. , so that this method is subject to certain limitations in practical applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of superhydrophobic superlipophilic ultralight sponge
  • A kind of preparation method of superhydrophobic superlipophilic ultralight sponge
  • A kind of preparation method of superhydrophobic superlipophilic ultralight sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a. Preparation of binary siloxane hydrolysis system: The hydrolysis system of binary siloxane is dimethyldimethoxysilane containing difunctional alkoxysilane and tetramethoxysilane with tetrafunctional alkoxysilane , methanol-water system with pH=10; the mass of dimethyldimethoxysilane and tetramethoxysilane accounts for 1.5% of the mass of the hydrolysis system, and the mass of dimethyldimethoxysilane accounts for 0.5% of the mass of the hydrolysis system %, the quality of tetramethoxysilane accounts for 1% of the hydrolysis system; the quality of methanol-water accounts for 98.5% of the hydrolysis system, wherein methanol accounts for 88.5% of the hydrolysis system quality, and water accounts for 10% of the hydrolysis system quality; Sodium hydroxide adjusts the pH of the hydrolysis system to 10; hydrolyze the prepared binary siloxane system at a temperature of 50°C for 6 hours to obtain a binary siloxane hydrolysis system for use; among them, sodium hydroxide can be r...

Embodiment 2

[0023] a. Preparation of binary siloxane hydrolysis system: The hydrolysis system of binary siloxane is diethyldiethoxysilane containing difunctional alkoxysilane and tetraethoxysilane containing tetrafunctional alkoxysilane And pH = 8 ethanol-water system; the quality of diethyldiethoxysilane and tetraethoxysilane accounted for 9% of the hydrolysis system quality, wherein the quality of diethyldiethoxysilane accounted for 3% of the hydrolysis system %, the quality of tetraethoxysilane accounts for 6% of the hydrolysis system; the quality of ethanol-water accounts for 91% of the hydrolysis system, wherein ethanol accounts for 71% of the hydrolysis system quality, and water accounts for 20% of the hydrolysis system quality; Ethylenediamine adjusts the pH of the hydrolysis system to 8, and hydrolyzes the prepared binary siloxane system at a temperature of 60°C for 2 hours to obtain a binary siloxane hydrolysis system for use; among them, ethylenediamine can be replaced by ethylam...

Embodiment 3

[0027]a. Preparation of the binary siloxane hydrolysis system: the hydrolysis system of the binary siloxane contains trifunctional alkoxysilane as methyltriethoxysilane and tetrafunctional alkoxysilane as tetrapropoxysilane and Ethanol-water system with pH=3; the quality of methyltriethoxysilane and tetrapropoxysilane accounts for 0.6% of the mass of the hydrolysis system, wherein the quality of methyltriethoxysilane accounts for 0.2% of the hydrolysis system, four The quality of propoxysilane accounts for 0.4% of the hydrolysis system; the quality of ethanol-water accounts for 99.4% of the hydrolysis system, wherein ethanol accounts for 94.4% of the hydrolysis system quality, and water accounts for 5% of the hydrolysis system quality; pH=3; hydrolyze the prepared binary siloxane system at a temperature of 40°C for 12 hours to obtain a binary siloxane hydrolysis system for use; among them, methyltriethoxysilane can be replaced by methyltrimethoxy Silane, hydrochloric acid can ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a preparation method of super-hydrophobic, super-oleophylic and ultralight sponge. The preparation method comprises two steps of performing functionalized processing on melamine sponge by using an impregnation method and performing a curing reaction after processing. The melamine sponge used by the invention has a large quantity of active functional groups such as hydroxyl groups and amino groups on the surface, the content of the hydrophobic active functional groups on the surface of the sponge is remarkably reduced after the active groups are chemically functionalized, which causes a result that the surface energy of the material is reduced, thus the sponge is endowed with super-hydrophobic and super-oleophylic effects, and a contact angle between the sponge and water exceeds 150 degrees; and the modified melamine sponge belongs to an ultralight material due to density. The method disclosed by the invention has the advantages that raw materials are low in price and easy to available, the process is simple and easy to operate, the large-scale preparation is easily realized, and the like. The sponge prepared according to the preparation method has the advantages of low density, excellent compression resistance, high oil absorbing speed, high oil absorbing rate, high oil and water separation selectivity and the like, is a novel and efficient ultralight-density oil and water separating material, and has a wide application prospect in the fields such as organic chemical reagent treatment, oil-containing wastewater treatment, and leaking crude oil recovery.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, and in particular relates to a preparation method of a superhydrophobic, superoleophilic and ultralight sponge. Background technique [0002] Various oil products (petroleum and its products, edible oil, etc.) bring convenience to people's daily life, but also bring huge safety and health risks. For example: the oily sewage produced in the process of crude oil mining, processing, transportation, etc. will cause the environmental medium to lack oxygen and lead to ecological disasters; waste edible oils and fats (commonly known as gutter oil) will be discharged together with domestic sewage, which will have a negative impact on the urban sewage treatment system , and the effective separation and recycling of the above-mentioned waste from water has become the key to its high-value utilization. The design, preparation and application of high-efficiency oil-...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022
CPCB01D17/0202
Inventor 马鹏程穆磊陈军腾杨苏东
Owner 中科瑞丽分离科技无锡有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap