CN104759150A - Heat-resistant flexible composite filter material prepared by blending melt-blown polypropylene with modified caustic-burned magnesium powder 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 heat-resistant flexible composite filter material prepared by blending melt-blown polypropylene with modified caustic-burned magnesium powder and used for sewage treatment and a preparation method thereof. The filter material is prepared from following raw materials, by weight: 5-8 parts of soft silica gel, 1-2 parts of nano clay, 2-3 parts of nano-hydroxyapatite, 12-15 parts of carbonized crop straw powder in 300-400 meshes, 30-40 parts of polypropylene, 15-20 parts of the caustic-burned magnesium powder in 200-300 meshes, 0.3-0.4 parts of sodium citrate, 0.5-0.8 parts of sodium carbonate, 2-3 parts of rosin and 1-2 parts of a silane coupling agent KH-550. 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 high-efficient filter material in a stereoscopic network structure. The filter material is convenient to use, is heat-resistant and fold-resistant, is stable in performance and is high-efficient and durable.

Description

Heat-resisting toughness composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification light-burning magnesium powder and preparation method thereof

Technical field

The present invention relates to a kind of sewage disposal filtrate, be specifically related to toughness composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification dregs 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 heat-resisting toughness composite filtering material for sewage disposal fusion-jetting polypropylene mixing modification light-burning magnesium powder, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: soft silica gel 5-8, nano clay 1-2, nanometer hydroxyapatite 2-3,300-400 order charing crop powder of straw 12-15, polypropylene 30-40,200-300 order light-burning magnesium powder 15-20, natrium citricum 0.3-0.4, sodium carbonate 0.5-0.8, rosin 2-3, silane resin acceptor kh-550 1-2;

The preparation method of the heat-resisting toughness composite filtering material of described a kind of sewage disposal fusion-jetting polypropylene mixing modification light-burning magnesium powder comprises following steps:

(1) first natrium citricum, sodium carbonate are dropped in water, be stirred to after it dissolves completely, drop into light-burning magnesium powder, stir after soaking 2-3h, add nano clay, nanometer hydroxyapatite, charing crop powder of straw again, high-speed stirred mixing 50-60min, subsequently 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 rosin, soft silica gel, 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 containing natrium citricum, the aqueous solution of the compositions such as sodium carbonate carries out immersion modification to light-burning magnesium powder, improve the surface property of flyash micro mist, improve the compatibility of itself and polypropylene agglomerate, the nano-powder of doping has widened material soil pick-up ability, the fiber filaments that this species complex is carried on the melt-blown preparation of modified polypropylene agglomerate being collected 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 performance of finished product also improves, heat-resisting folding, stable performance, 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 heat-resisting toughness composite filtering material for sewage disposal fusion-jetting polypropylene mixing modification light-burning magnesium powder, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: soft silica gel 6, nano clay 1, nanometer hydroxyapatite 2.5,400 order charing crop powder of straw 14, polypropylene 35,200 order light-burning magnesium powder 18, natrium citricum 0.3, sodium carbonate 0.6, rosin 2.5, silane resin acceptor kh-550 1.5;

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

(1) first natrium citricum, sodium carbonate are dropped in water, be stirred to after it dissolves completely, drop into light-burning magnesium powder, stir after soaking 2.5h, add nano clay, nanometer hydroxyapatite, charing crop powder of straw again, high-speed stirred mixing 55min, subsequently 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 rosin, soft silica gel, stir in rear input double screw extruder and melt extrude granulation at 175 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 205 DEG C through temperature, wherein orifice diameter is 80 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 194g/m ²porosity is 82%, and elongation at break is 330%, and fracture strength is 17.5MPa, bending modulus is 34.2MPa, wear rate≤0.5%, maximum operation (service) temperature can reach 150 DEG C, and product reaches 95% to ammonia nitrogen in sewage removal rate, COD removal rate reaches 95%, heavy metal removal rate reaches 90%, and turbidity removal rate reaches 85%, and filter cycle, comparatively conventional material on average improved 60%.

Claims (2)

1. a heat-resisting toughness composite filtering material for sewage disposal fusion-jetting polypropylene mixing modification light-burning magnesium powder, is characterized in that: described composite filtering material is made up of the raw material of following weight portion: soft silica gel 5-8, nano clay 1-2, nanometer hydroxyapatite 2-3,300-400 order charing crop powder of straw 12-15, polypropylene 30-40,200-300 order light-burning magnesium powder 15-20, natrium citricum 0.3-0.4, sodium carbonate 0.5-0.8, rosin 2-3, silane resin acceptor kh-550 1-2.

2. the preparation method of the heat-resisting toughness composite filtering material of a kind of sewage disposal fusion-jetting polypropylene mixing modification light-burning magnesium powder as claimed in claim 1, is characterized in that, comprise following steps:

(1) first natrium citricum, sodium carbonate are dropped in water, be stirred to after it dissolves completely, drop into light-burning magnesium powder, stir after soaking 2-3h, add nano clay, nanometer hydroxyapatite, charing crop powder of straw again, high-speed stirred mixing 50-60min, subsequently 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 rosin, soft silica gel, 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.