Preparation method of porous polyvinyl chloride-graphene composite material

A technology of polyvinyl chloride and composite materials, applied in separation methods, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of high apparent density of porous polyvinyl chloride, difficult control conditions for industrial control, and adsorption performance limited and other problems, to achieve the effect of good through-hole and opening performance, scientific and reasonable composition ratio, and good hydrophobic performance

Inactive Publication Date: 2017-09-29
CHUZHOU HONGYUAN SPRAYING
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Problems solved by technology

However, the porous polyvinyl chloride prepared by these methods has either high apparent density and unsatisfactory porosity;

Method used

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Embodiment Construction

[0016] A preparation method of porous polyvinyl chloride graphene composite material, comprising the following specific steps:

[0017] (1) Put 0.9g nano-graphene and 0.09g polydimethylsiloxane into a sealed weighing bottle, put it in a muffle furnace, heat it to 230°C for 60 minutes, take it out after cooling, and obtain the modified nano graphene;

[0018] (2) Put sodium chloride in an oven and bake at 100°C for 20 hours for use, dissolve 90g of polyvinyl chloride into 1200mLN, N dimethylformamide solution, and then dissolve the modified nano-graphite obtained in step (1) Graphene was added therein, and magnetically stirred for 30 minutes, so that the modified nano-graphene was preliminarily dispersed in the polyvinyl chloride solution;

[0019] (3) Mix the product of step (2) with 360g of dried sodium chloride, put it into a ball mill, and the ball milling medium is 3000g of zirconia balls, and ball mill at a speed of 600 rpm for 60 minutes; then the ball milled mixture A...

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Abstract

The invention discloses a preparation method of a porous polyvinyl chloride-graphene composite material. According to the preparation method, hydrophobic modified nano-graphene, an N,N-dimethylformamide solution of polyvinyl chloride and sodium chloride are mixed by virtue of a high energy ball milling method, and finally, the mixture is dropwise added into distilled water to form porous polyvinyl chloride-graphene particles; a pore-foaming agent is compatible with water to form a surface layer with less pore structures, the compatiblility speed of the pore-foaming agent with water in a sphere is decreased due to the blockage of the surface layer and generates a pore forming effect in a slow dissolving-out process, and formed holes are uniformly distributed and uniform in particle sizes and have good through-hole and opening performance; meanwhile, by adding hydrophobic modified nano-graphene, the prepared composite material has good hydrophobic property, and a porous structure can be applied to oil-water separation such as water pollution treatment; and furthermore, a process of the preparation process is convenient to industrial control, and the application field of polyvinyl chloride is expanded.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride, in particular to a preparation method of a porous polyvinyl chloride graphene composite material. Background technique [0002] Polyvinyl chloride (PVC) is the most used raw material for plastic products after polyethylene and polypropylene. It has its unique physical and chemical advantages and is widely used in various fields. However, its thermal stability is poor, and it is easy to age and decompose. value. In addition, in recent years, the domestic PVC industry is facing severe challenges such as overcapacity, rising energy prices, fierce market competition, and increasing pressure on environmental protection. At present, many researchers have devoted themselves to the modification of PVC materials to improve their mechanical properties and heat resistance. Common modified fillers mainly include clay, wood flour, wood fiber, crop residues, cellulose, calcium carbonate, etc. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/40
CPCB01J20/261B01J20/20B01J20/22C02F1/283C02F1/285C02F1/40
Inventor 王新志张凯郑海迪
Owner CHUZHOU HONGYUAN SPRAYING
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