阅读说明：本技术 一种强疏油套孔结构的复合材料的制备方法 (Preparation method of composite material with strong oleophobic trepanning structure ) 是由 苟进锋 骆筱 于 2019-07-16 设计创作，主要内容包括：一种强疏油套孔结构的复合材料的制备方法,包括以下步骤：步骤1,Ps小球的预处理：称取市售Ps小球,用热水洗涤后,加入1,2-二氯乙烷溶胀一定时间；步骤2,疏油网络的制备：将洗好的Ps球置于三口烧瓶中,作为种子聚合物,通氮5min后,同时配制腐殖酸钠溶液、丙烯酸钠、引发剂与交联剂、均匀加入三口烧瓶,再将含氟材料均匀混入,通氮,程序升温,将余下含氟材料滴加完毕,搅拌反应,洗涤,将未反应的单体洗出；大孔小孔配合作用于废水,高效节能；解决了油污堵住孔道的问题,解决了吸附树脂使用中油污中毒的问题。(A preparation method of a composite material with a strong oleophobic trepanning structure comprises the following steps: step 1, pretreatment of the Ps pellets: weighing commercially available Ps pellets, washing with hot water, and adding 1, 2-dichloroethane for swelling for a certain time; step 2, preparing an oleophobic network: placing the washed Ps balls into a three-neck flask to be used as seed polymers, introducing nitrogen for 5min, simultaneously preparing a sodium humate solution, sodium acrylate, an initiator and a cross-linking agent, uniformly adding the mixture into the three-neck flask, uniformly mixing fluorine-containing materials, introducing nitrogen, raising the temperature by program, completely dripping the rest fluorine-containing materials, stirring for reaction, washing, and washing out unreacted monomers; the large holes and the small holes are matched to act on the wastewater, so that the efficiency and the energy are high; solves the problem that the pore passage is blocked by oil stains and the problem of oil stain poisoning in the use of the adsorption resin.)

1. A preparation method of a composite material with a strong oleophobic trepanning structure is characterized by comprising the following steps:

step 1, pretreatment of the Ps pellets:

pretreatment of the Ps pellets: weighing 30-70 parts of commercially available Ps pellets, washing with hot water with a volume three times that of the commercially available Ps pellets, and adding 1-4 times of 1, 2-dichloroethane for swelling for 3-8 hours;

step 2, preparing an oleophobic network:

placing the washed Ps balls into a three-neck flask to be used as a seed polymer, introducing nitrogen for 5min, preparing 1-10 parts of a sodium humate solution, 1-10 parts of sodium acrylate with the neutralization degree of 55-75%, 0.01-0.05 part of an initiator and 0.03-0.08 part of a cross-linking agent, uniformly adding the mixture into the three-neck flask, uniformly mixing 1/2 of 0.5-5 parts of a fluorine-containing material, introducing nitrogen for 5min, raising the temperature to 50-85 ℃, dropwise adding the rest 1/2 perfluoroalkyl methacrylate within 1h, stirring for reacting for 3h, washing, and washing unreacted monomers.

2. The preparation method of the composite material with the strong oleophobic trepanning structure is characterized in that sodium humate is one or a mixture of more of black humic acid, brown humic acid and yellow humic acid, and sodium hydroxide with a mass ratio of 10: 0.5-3 is added for neutralization according to the total amount.

3. The preparation method of the composite material with the strong oleophobic trepanning structure according to claim 1, characterized in that the fluorine-containing material adopts one or a mixture of more of tetrafluoroethylene and perfluoroalkyl acrylate series.

4. The preparation method of the composite material with the strong oleophobic trepanning structure is characterized in that the initiator is one or a mixture of potassium persulfate, tert-butyl hydroperoxide, menthane hydroperoxide and potassium bisulfite.

5. The preparation method of the composite material with the strong oleophobic trepan structure according to claim 1, characterized in that the cross-linking agent is N' N-methylene bisacrylamide.

Technical Field

The invention belongs to the technical field of environment-friendly materials, and particularly relates to a preparation method of a composite material with a strong oleophobic trepanning structure.

Background

With the development and wide application of macroporous resin, the adsorption method becomes a common method for treating sewage, the adsorption method has no destructiveness to pollutants while removing the pollutants, and only concentrates the pollutants on an adsorbent from a polluted water body, so that high-risk intermediate products cannot be generated, and compared with the traditional biochemical treatment method, the adsorption method has low cost and more thorough pollutant removal. However, the macroporous adsorbent has limited application conditions and cannot contact wastewater containing oil stains, and industrial wastewater, underground water and the like generally contain more or less oil stains due to a treatment process, so that the oil stains block resin ducts, which causes inconvenience to the use of resin and limits the use of the resin.

At present, the problem of industrially treating oily wastewater is that an oil removal process must be added before treatment, which causes resource waste, and particularly, when whether the wastewater contains oil stains or not is unknown, resin is often ineffective, and the wastewater must be treated again, which is very troublesome.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a preparation method of a composite material with a strong oleophobic trepanning structure, wherein a new strong oleophobic fluorine-containing material is introduced into macroporous resin, so that oil stain cannot be close to the surface of a pore diameter, the problem that the pore passage is blocked by the oil stain is solved, and the problem of oil stain poisoning in the use of adsorption resin is solved; the invention also introduces humic acid molecules with a three-dimensional network structure for reaction, and a small pore structure is sleeved in the macroporous resin, and the large pores and the small pores are matched to act on the wastewater, thereby being efficient and energy-saving.

In order to achieve the purpose, the invention adopts the technical scheme that: a preparation method of a composite material with a strong oleophobic trepanning structure comprises the following steps:

step 1, pretreatment of the Ps pellets:

pretreatment of the Ps pellets: weighing 30-70 parts of commercially available Ps pellets, washing with hot water with a volume three times that of the commercially available Ps pellets, and adding 1-4 times of 1, 2-dichloroethane for swelling for 3-8 hours;

step 2, preparing an oleophobic network:

placing the washed Ps balls into a three-neck flask to be used as a seed polymer, introducing nitrogen for 5min, preparing 1-10 parts of a sodium humate solution, 1-10 parts of sodium acrylate with the neutralization degree of 55-75%, 0.01-0.05 part of an initiator and 0.03-0.08 part of a cross-linking agent, uniformly adding the mixture into the three-neck flask, uniformly mixing 1/2 of 0.5-5 parts of a fluorine-containing material, introducing nitrogen for 5min, raising the temperature to 50-85 ℃, dropwise adding the rest 1/2 perfluoroalkyl methacrylate within 1h, stirring for reacting for 3h, washing, and washing unreacted monomers.

The sodium humate is one or a mixture of more of humic acid, humic acid and humic acid, and sodium hydroxide with the mass ratio of 10: 0.5-3 is added for neutralization according to the total amount.

The fluorine-containing material adopts one or a mixture of more of tetrafluoroethylene and perfluoroalkyl acrylate series.

The initiator is one or a mixture of more of potassium persulfate, tert-butyl hydroperoxide, menthane hydroperoxide and potassium bisulfite.

The cross-linking agent is N' N-methylene bisacrylamide.

Compared with the prior art, the invention has the beneficial effects that:

1) according to the invention, the fluorine element serving as a strong oleophobic material is introduced into the second-layer network structure, and the edge of the porous structure consists of the strong oleophobic fluorine element, so that the condition that the resin of the porous structure is blocked by oil stain in the traditional resin is prevented from losing efficacy;

2) according to the invention, a humic acid three-dimensional supermolecular structure is introduced in the second-layer network synthesis, humic acid is of a three-dimensional network structure and contains micropores, and a large-pore and small-pore combined trepanning structure is formed by introducing the humic acid, so that the wastewater treatment range is expanded.

Detailed Description

The present invention will be described in further detail with reference to examples.