CN104759160A - High-strength composite filter material prepared by blending melt-blown polypropylene with nano carbon fiber and used for sewage treatment and preparation method thereof - Google Patents

Abstract

The invention relates to a filter material used in sewage treatment and particularly relates to a high-strength composite filter material prepared by blending melt-blown polypropylene with nano carbon fiber and used for sewage treatment and a preparation method thereof. The filter material is prepared from following raw materials, by weight: 0.01-0.02 parts of the nano carbon fiber, 3-5 parts of nano zinc oxide, 0.8-1 part of N,N-methylene bisacrylamide, 20-25 parts of expanded perlite in 200-300 meshes, 10-13 parts of carbonized crop straw powder in 300-400 meshes, 30-35 parts of polypropylene, 2-3 parts of rosin, 1-1.5 parts of sodium metasilicate, 1-2 parts of a silane coupling agent KH-550, 30-40 parts of water and 4-8 parts of anhydrous alcohol. In the invention, the modified conventional filter material composite body is supported onto the modified polypropylene master batch melt-blown fiber thin filaments to prepare the filter material in a stereoscopic network structure. The filter material is high-efficient and stable in sewage treatment, is flexible and variable in shape, is high in strength and good in flexibility, is not liable to corrode and break and is high in repeating utilization rate.

Description

High-strength composite filtrate of a kind of sewage disposal fusion-jetting polypropylene blending carbon nano-fiber and preparation method thereof

Technical field

The present invention relates to a kind of sewage disposal filtrate, be specifically related to high-strength composite filtrate of a kind of sewage disposal fusion-jetting polypropylene blending carbon nano-fiber and preparation method thereof.

Background technology

Along with socioeconomic development, water pollutions increases the weight of day by day, pollutant component and content are difficult to control more, more and more higher to the requirement of water technology, original conventional treatment material obviously can not meet needed for production, improve the efficiency of water treatment, need to increase water quality from source treatment effect, and the serviceability improving filtrate the most efficient the most direct beyond doubt method, current use comparatively widely filtrate mainly contains quartz sand filter media, ANTHRACITE FILTER MEDIA, volcanic rock filtrate and string class filtrate etc., these filtrates in use each tool are good and bad, on the whole, improve the service efficiency of these filtrates, reduce production cost and be still the problem needing to solve.

Polypropylene melt-blown material is a kind of novel filtering material, mutually tangle between its fiber, structural void is little, spatially network structure, and product flexibility is strong, can make various shape as required, have that filtration resistance is low, filter effect is high, output is high, cost is low, the not advantage such as cracky, existing research shows that it is well worth doing at sewage treatment area, however the shaping filtrate intensity of simple polypropylene melt-blown and durability poor, the adsorption capacity of dirt is had much room for improvement.

Summary of the invention

The object of the invention is to, for the deficiency of current material, organic and inorganic to polypropylene melt blown filter materials and tradition filtrate is combined, maximize favourable factors and minimize unfavourable ones, there is provided a kind of using fusion-jetting polypropylene as carrier, load has the NEW TYPE OF COMPOSITE filtrate of the organic and inorganic filtrate of high efficiency of additive capability, and this filtrate production cost is low, absorption cuts dirty effective, highly efficient durable, does not produce secondary pollution.

To achieve these goals, the technical solution used in the present invention is as follows:

A kind of high-strength composite filtrate of sewage disposal fusion-jetting polypropylene blending carbon nano-fiber, it is characterized in that: described composite filtering material is made up of the raw material of following weight portion: carbon nano-fiber 0.01-0.02, nano zine oxide 3-5, N, N ' methylene-bisacrylamide 0.8-1,200-300 order expanded perlite 20-25,300-400 order charing crop powder of straw 10-13, polypropylene 30-35, rosin 2-3, sodium metasilicate 1-1.5, silane resin acceptor kh-550 1-2, water 30-40, absolute alcohol 4-8;

The preparation method of the high-strength composite filtrate of described a kind of sewage disposal fusion-jetting polypropylene blending carbon nano-fiber, comprises following steps:

(1) first carbon nano-fiber is dropped in absolute ethyl alcohol, high-speed stirred makes it be uniformly dispersed, add expanded perlite, sodium metasilicate and water more subsequently, stir after soaking 40-60min, add charing crop powder of straw more subsequently, high-speed stirred mixing 40-50min, finally by mixed material heated-air drying, remove moisture completely, be broken into 300-400 order micro mist for subsequent use;

(2) polypropylene and rosin, nano zine oxide, N, N ' methylene-bisacrylamide are mixed, stir in rear input double screw extruder and melt extrude granulation at 170-180 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other residual components, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 200-230 DEG C through temperature, wherein orifice diameter is 50-100 μm, ejection filament stretch under the high velocity, hot air stream effect of 230-250 DEG C laggard enter receiving system, filament to be composite assembles shaping on the reception device, completely cooling after and get final product.

Beneficial effect of the present invention:

The present invention is at expanded perlite, traditional filter material surface blending carbon nano-fibers such as charing powder of straw, improve the surface texture of material, effectively raise these traditional filtrates to the adsorption capacity of pollutant, the pollutant scope of energy adsorption treatment is widened, and these modified traditional filtrate complexs are carried in the fiber filaments of the melt-blown preparation of modified polypropylene agglomerate, finally collecting the material obtained after being shaped has complicated, multichannel dimensional network structure, this structure lengthened the adsorption treatment time of dirt, higher to the removal rate of dirt, simultaneously morphologically more flexible, according to environment for use and the product preparing variform and size can be required, in addition the mechanical property of finished product also improves, form stable, not easily corrosion failure, recycling rate of waterused is high.

Detailed description of the invention

Embodiment

Below with reference to embodiment, the present invention will be further described.

A kind of high-strength composite filtrate of sewage disposal fusion-jetting polypropylene blending carbon nano-fiber, it is characterized in that: described composite filtering material is made up of the raw material of following weight portion: carbon nano-fiber 0.01, nano zine oxide 4, N, N ' methylene-bisacrylamide 0.8,300 order expanded perlite 23,400 order charing crop powder of straw 12, polypropylene 34, rosin 2.5, sodium metasilicate 1.2, silane resin acceptor kh-550 1.5, water 38, absolute alcohol 6;

The preparation method of above-mentioned composite filtering material comprises following steps:

(1) first carbon nano-fiber is dropped in absolute ethyl alcohol, high-speed stirred makes it be uniformly dispersed, add expanded perlite, sodium metasilicate and water more subsequently, stir after soaking 50min, add charing crop powder of straw more subsequently, high-speed stirred mixing 45min, finally by mixed material heated-air drying, remove moisture completely, be broken into 400 order micro mists for subsequent use;

(2) polypropylene and rosin, nano zine oxide, N, N ' methylene-bisacrylamide are mixed, stir in rear input double screw extruder and melt extrude granulation at 180 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other residual components, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 220 DEG C through temperature, wherein orifice diameter is 60 μm, ejection filament stretch under the high velocity, hot air stream effect of 245 DEG C laggard enter receiving system, filament to be composite assembles shaping on the reception device, completely cooling after and get final product.

The composite filtering material grammes per square metre prepared is 226g/m ²porosity is 82%, elongation at break is 435%, and fracture strength is 18.2MPa, and bending modulus is 29.4MPa, wear rate≤0.5%, product reaches 94%, COD removal rate to ammonia nitrogen in sewage removal rate and reaches 98%, and heavy metal removal rate reaches 90%, turbidity removal rate reaches 85%, and filter cycle, comparatively conventional material on average improved 68%.

Claims (2)

1. the sewage disposal high-strength composite filtrate of fusion-jetting polypropylene blending carbon nano-fiber, it is characterized in that: described composite filtering material is made up of the raw material of following weight portion: carbon nano-fiber 0.01-0.02, nano zine oxide 3-5, N, N ' methylene-bisacrylamide 0.8-1,200-300 order expanded perlite 20-25,300-400 order charing crop powder of straw 10-13, polypropylene 30-35, rosin 2-3, sodium metasilicate 1-1.5, silane resin acceptor kh-550 1-2, water 30-40, absolute alcohol 4-8.

2. the preparation method of the high-strength composite filtrate of a kind of sewage disposal fusion-jetting polypropylene blending carbon nano-fiber as claimed in claim 1, is characterized in that, comprise following steps:

(1) first carbon nano-fiber is dropped in absolute ethyl alcohol, high-speed stirred makes it be uniformly dispersed, add expanded perlite, sodium metasilicate and water more subsequently, stir after soaking 40-60min, add charing crop powder of straw more subsequently, high-speed stirred mixing 40-50min, finally by mixed material heated-air drying, remove moisture completely, be broken into 300-400 order micro mist for subsequent use;

(2) polypropylene and rosin, nano zine oxide, N, N ' methylene-bisacrylamide are mixed, stir in rear input double screw extruder and melt extrude granulation at 170-180 DEG C of temperature, obtain modified polypropylene agglomerate;

(3) step (1) gained material is mixed with modified polypropylene agglomerate and other residual components, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 200-230 DEG C through temperature, wherein orifice diameter is 50-100 μm, ejection filament stretch under the high velocity, hot air stream effect of 230-250 DEG C laggard enter receiving system, filament to be composite assembles shaping on the reception device, completely cooling after and get final product.