CN104759144A - Antistatic composite filter material prepared by blending melt-blown polypropylene with modified wollastonite and used for sewage treatment and preparation method thereof - Google Patents

Abstract

The invention relates to a filter material used for sewage treatment and particularly relates to an antistatic composite filter material prepared by blending melt-blown polypropylene with modified wollastonite and used for sewage treatment and a preparation method thereof. The filter material is prepared from following raw materials, by weight: 30-36 parts of polypropylene, 1-2 parts of a titanate coupling agent, 1-2 parts of aluminum sol, 2-3 parts of butyl methacrylate, 2-3 parts of polytetrafluoroethylene ultrafine powder, 2-3 parts of polyether-modified silicone oil, 8-10 parts of ultrafine aluminum silicate, 1-2 parts of sodium carbonate, 0.2-0.3 parts of nano-iron, 22-28 parts of wollastonite fine powder in 200-300 meshes, 0.8-1 part of lauryl sodium sulfate and 30-40 parts of water. In the invention, the modified wollastonite composite micro powder is supported onto the modified polypropylene master batch melt-blown filaments to prepare the filter material having a stereoscopic network structure. The filter material is excellent in mechanical performance, is flexible in forms, is high in repeated utilization rate, is not liable to cause static electricity, and is stable and high-efficient in performances.

Description

Antistatic composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification wollastonite and preparation method thereof

Technical field

The present invention relates to a kind of sewage disposal filtrate, be specifically related to antistatic composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification wollastonite 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:

An antistatic composite filtering material for sewage disposal fusion-jetting polypropylene mixing modification wollastonite, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polypropylene 30-36, titanate coupling agent 1-2, Alumina gel 1-2, butyl methacrylate 2-3, superfine powder of polytetrafluoroethylene 2-3, polyether modified silicon oil 2-3, superfine alumina silicate 8-10, sodium carbonate 1-2, Nanoscale Iron 0.2-0.3,200-300 order wollastonite fine powder 22-28, lauryl sodium sulfate 0.8-1, water 30-40;

The preparation method of the antistatic composite filtering material of described a kind of sewage disposal fusion-jetting polypropylene mixing modification wollastonite, comprises following steps:

(1) first Alumina gel, lauryl sodium sulfate are dropped in water, be stirred to after it dissolves completely, wollastonite fine powder is dropped in solution, after soaking 2-3h, high-speed stirred mixes, add Nanoscale Iron, sodium carbonate more subsequently, continue to be uniformly mixed 40-50min, finally by gained mixed material heated-air drying, remove moisture completely, be broken into 300-400 order micro mist for subsequent use;

(2) polypropylene is mixed with butyl methacrylate, polyether modified silicon oil, superfine powder of polytetrafluoroethylene, 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 leftover materials, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 200-220 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 utilizes the aqueous solution containing Alumina gel to carry out immersion modification to wollastonite micro mist, improve the absorption stability of powder and the compatibility with polypropylene agglomerate, in powder, the Nanoscale Iron of blending has widened the retaining power of filtrate further, the fiber filaments that this composite filtering material micro mist is carried on the melt-blown preparation of modified polypropylene agglomerate is collected to obtain after being shaped having complicated, the material of multichannel dimensional network structure, the material of this structure has excellent mechanical property, recycling rate of waterused is high, not easily produce electrostatic, stable performance is efficient, in addition its form is flexible, according to environment for use and the product preparing variform and size can be required.

Detailed description of the invention

Embodiment

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

An antistatic composite filtering material for sewage disposal fusion-jetting polypropylene mixing modification wollastonite, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polypropylene 32, titanate coupling agent 1.5, Alumina gel 1.8, butyl methacrylate 2.5, superfine powder of polytetrafluoroethylene 2, polyether modified silicon oil 2.6, superfine alumina silicate 8, sodium carbonate 1.5, Nanoscale Iron 0.2,300 order wollastonite fine powder 26, lauryl sodium sulfate 0.8, water 38;

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

(1) first Alumina gel, lauryl sodium sulfate are dropped in water, be stirred to after it dissolves completely, wollastonite fine powder is dropped in solution, after soaking 3h, high-speed stirred mixes, add Nanoscale Iron, sodium carbonate more subsequently, continue to be uniformly mixed 45min, finally by gained mixed material heated-air drying, remove moisture completely, be broken into 400 order micro mists for subsequent use;

(2) polypropylene is mixed with butyl methacrylate, polyether modified silicon oil, superfine powder of polytetrafluoroethylene, 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 leftover materials, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 210 DEG C through temperature, wherein orifice diameter is 60 μm, ejection filament stretch under the high velocity, hot air stream effect of 235 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 204.2g/m ²porosity is 75.8%, elongation at break is 315.4%, and fracture strength is 23.4MPa, and bending modulus is 31.2MPa, wear rate≤0.5%, product reaches 95%, COD removal rate to ammonia nitrogen in sewage removal rate and reaches 95%, and heavy metal removal rate reaches 90%, turbidity removal rate reaches 86%, and filter cycle, comparatively conventional material on average improved 60.6%.

Claims (2)

1. an antistatic composite filtering material for sewage disposal fusion-jetting polypropylene mixing modification wollastonite, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: polypropylene 30-36, titanate coupling agent 1-2, Alumina gel 1-2, butyl methacrylate 2-3, superfine powder of polytetrafluoroethylene 2-3, polyether modified silicon oil 2-3, superfine alumina silicate 8-10, sodium carbonate 1-2, Nanoscale Iron 0.2-0.3,200-300 order wollastonite fine powder 22-28, lauryl sodium sulfate 0.8-1, water 30-40.

2. the preparation method of the antistatic composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification wollastonite as claimed in claim 1, is characterized in that, comprise following steps:

(1) first Alumina gel, lauryl sodium sulfate are dropped in water, be stirred to after it dissolves completely, wollastonite fine powder is dropped in solution, after soaking 2-3h, high-speed stirred mixes, add Nanoscale Iron, sodium carbonate more subsequently, continue to be uniformly mixed 40-50min, finally by gained mixed material heated-air drying, remove moisture completely, be broken into 300-400 order micro mist for subsequent use;

(2) polypropylene is mixed with butyl methacrylate, polyether modified silicon oil, superfine powder of polytetrafluoroethylene, 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 leftover materials, drop in melt-blown non-woven former after stirring, melt is the meltblown beam spinneret orifice ejection of 200-220 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.