CN106147012A - A kind of red mud MODIFIED PP composite and the method being used for preparing double-wall corrugated pipe thereof - Google Patents

A kind of red mud MODIFIED PP composite and the method being used for preparing double-wall corrugated pipe thereof Download PDF

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CN106147012A
CN106147012A CN201510193588.1A CN201510193588A CN106147012A CN 106147012 A CN106147012 A CN 106147012A CN 201510193588 A CN201510193588 A CN 201510193588A CN 106147012 A CN106147012 A CN 106147012A
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red mud
double
parts
composite
corrugated pipe
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王爱国
王帅波
陈志远
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East Linyi Vertical Plastic Building Material Co Ltd
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East Linyi Vertical Plastic Building Material Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/726—Measuring properties of mixture, e.g. temperature or density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/728—Measuring data of the driving system, e.g. torque, speed, power, vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/90—Fillers or reinforcements, e.g. fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/20—Recycled plastic

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention discloses a kind of red mud MODIFIED PP composite and for the method preparing double-wall corrugated pipe, this red mud MODIFIED PP composite is made up of the component of following weight portion: polypropylene hybrid resin 100 parts, red mud powder 60～80 parts, anti-impact agent 10～20 parts, compatilizer 0～10 parts, defoamer 0～10 parts, other auxiliary agents 0～10 parts.Red mud powder is put into batch mixing kneader, controls to keep 2～5 minutes at rotating speed 1000 revs/min, temperature 100～110 DEG C；Add calcium stearate, solid packing alignment agent P2010, stir 5～10min；Mediate temperature and be down to 48～52 DEG C, addition polypropylene hybrid resin, compatilizer, anti-impact agent, defoamer stir with erucyl amide, then red mud MODIFIED PP composite is placed in extruding pipe material in double main frame cone twin screw device, through module, vacuum, cooling molding, cuts, pack prepared double-wall corrugated pipe.Double-wall corrugated pipe high rigidity that the present invention prepares, obdurability, red mud is good fluidity, easily processing, low cost, environmental protection in PP material.

Description

A kind of red mud MODIFIED PP composite and the method being used for preparing double-wall corrugated pipe thereof
Technical field
The present invention relates to corrugated tube field of material technology, specifically a kind of red mud MODIFIED PP composite and being used for is prepared double The method of wall corrugated tube.
Background technology
Red mud is also known as red soil, the industrial solid wastes discharged after refining aluminium oxide from bauxite.China is big as the world the 4th Alumina producing state, the red mud of annual discharge is up to millions of tons.Substantial amounts of red mud can not sufficiently effective utilize, Zhi Nengyi Stack by large-area stockyard, occupy a large amount of soil, also environment is caused serious pollution.The whole world produces every year Red mud about 70,000,000 tons, the red mud that China produces every year is more than 30,000,000 tons.The generation of substantial amounts of red mud is to the mankind Production, life cause many impacts directly or indirectly, so reducing yield and the harm of red mud to greatest extent, Realize by all kinds of means, the resource of big quantity extremely the most urgent.Red mud main chemical SiO2、CaO、Al2O3、Fe2O3, Particle diameter 0.088～0.25 millimeter, proportion 2.7～2.9, unit weight 0.8～1.0, fusing point 1200～1250 DEG C, red mud Having huge specific surface area and containing a large amount of nanometers and the feature of submicron order hole, therefore, have nano effect, heat is steady Qualitative, the natural characteristic such as anti-flammability.
Double-wall corrugated pipe, is a kind of novel tube with circulus outer wall and smooth internal walls, and the beginning of the eighties is in Germany first Succeed in developing.Through the development of more than ten years and perfect, by single Cultivar development to complete product line.Exist at present Production technology and use are the most ripe.Due to performance and the cost of relatively economical of its excellence, send out America and Europe etc. Reach country and have been obtained for great promotion and application.Under conditions of waiting load, double-wall corrugated pipe has only to relatively thin tube wall Just can meet requirement.With the real wall ratio of pipe mutually of same material specification, the raw material about half can be saved, so cost is the most relatively Low, in China, the promotion and application of double-wall corrugated pipe are in the rising situation stage.Double walled ducting generally uses polyethylene tree Fat (PE) and polrvinyl chloride (UPVC) resin, acrylic resin (PP).Along with social progress, people are widely appreciated that, If using high-quality and more robust product, M R expense just can be saved, thus further demand more preferably availability And the pipeline of the blowdown/drainage system of higher hardness and quality.
PE double-wall corrugated pipe good toughness, shock resistance are good, tolerance to cold is good.But its shortcoming is elasticity modulus of materials low, product Intensity is low, many by doses；Resistance to elevated temperatures is poor, especially the south obvious step-down of tubing rigidity in summer, the yielding construction of interface Difficulty.
Double-wall PVC corrugated tube intensity is big, elasticity modulus of materials is high, difficult combustion.But heat stability when its shortcoming is raw material processing Difference, especially large diameter pipeline are difficult to molding, and chance high temperature easily decomposes, poor fluidity, typically commonly uses minor caliber pipe, big mouth Diameter pipes is difficult to produce；Tolerance to cold is poor, and shock resistance is poor, especially big to fragility in winter, is difficult to construction.
PP double-wall corrugated pipe is studied fewer at present, due to PP have nontoxic, corrosion-resistant, density is little, stretch modulus is high, The advantages such as heat-resist, processing characteristics is excellent, are processed as PE double-wall corrugated pipe equivalent specifications size, same ring stiffness grade Tubing rice quality can decline, and is nodal wood type tubing, this to advocate material-saving, energy-conservation, implement low-carbon economy society have positive effect. But PP black brittleness is big, poor toughness, molding shrinkage greatly, the most aging be particularly acute, need to be modified adding to pure material Work becomes composite that is applicable and that manufacture double-wall corrugated pipe.The most general thermoplastic elastic body that adds improves toughness, Or use inorganic nano rigid particles that PP is modified, can realize strengthening with toughness reinforcing simultaneously.
Red mud is made the research of plastic filler and is carried out for many years, recently as constantly changing of plastic processing and surface-treated agent Entering, red mud achieves new progress in the application of plastic industry.Such as patent 200610043514.0 discloses a kind of utilization Color plastic floor that useless PVC produces and preparation method thereof, patent 200810116380.X mono-kind red mud based on environmental protection is multiple Allocation modifier cooperative flame retardant polyethylene, patent 200910143767.9 red mud/old plastics synthesis construction and decoration composite etc..Red Mud Modification is chiefly directed to PVC product field, not yet has the degree of depth PP resin-oatmeal is filling-modified to report, does not more have In the ripe case that PP corrugated tube uses.
Currently, the study hotspot of state's inner corrugated pipe and market focus, it still is limited to PVC, PE kind, also having been reported that of PP class, Such as Chinese patent 201010231705.6 disclose a kind of compositions, with the large-caliber double-wall bellow of composition production with And production technology: Chinese patent 200910256085.9 discloses a kind of compound double-wall corrugated pipe and preparation technology thereof；China Patent 200410065143.7 discloses large bore dual-wall polyproplyene corrugated pipe composition；Chinese patent 200810182502.5 Disclose a kind of for copolymer producing polypropylene double-walled reinforcement bellows and preparation method thereof.Such PP double-wall corrugated pipe Technology is all to carry out studying in the equipment Foundations of PE double-wall corrugated pipe, and is all not directed to red mud as filling modifying agent Application in PP double-wall corrugated pipe, inorganic rigid particle used is nanometer grade calcium carbonate, is to sacrifice mine and environment is A kind of development pattern of cost.
Summary of the invention
It is an object of the invention to provide a kind of red mud MODIFIED PP composite and for the method preparing double-wall corrugated pipe, This material is mainly used in making double-wall corrugated pipe, and manufactured double-wall corrugated pipe has a high ring rigidity, good toughness, low cost Feature.Main frame and the head allocation plan that this kind of corrugated tube uses is produced it addition, additionally provide for this kind of composite；Make Traditional industry waste material red mud, has had stable channel to consume, and produces good recycling economy, society, environmental benefit.
For achieving the above object, the present invention provides following technical scheme:
A kind of red mud MODIFIED PP composite, is made up of the component of following weight portion: polypropylene hybrid resin 100 parts, red Mud powder 60～80 parts, anti-impact agent 10～20 parts, compatilizer 0～10 parts, defoamer 0～10 parts, other auxiliary agents 0～10 parts； Described polypropylene hybrid resin is made up of PP4220, PP001 and PP reworked material；Other auxiliary agents described are calcium stearates, consolidate Body filler orientation agent P2010 and the mixture of erucyl amide.
As the further scheme of the present invention: described red mud MODIFIED PP composite, it is made up of the component of following weight portion: Polypropylene hybrid resin 100 parts, red mud powder 65～75 parts, anti-impact agent 15～20 parts, compatilizer 3～5 parts, defoamer 3～5 Part, other auxiliary agents 3～5 parts；Wherein, in polypropylene hybrid resin, the mass ratio of PP4220: PP001: PP reworked material is 1.5～2.5: 0.5～1.5: 3～5；Calcium stearate in other auxiliary agents: solid packing alignment agent P2010: the quality of erucyl amide Ratio is 2.5～3.5: 2.5～3.5: 0.5～2.
As the further scheme of the present invention: described anti-impact agent uses POE.
As the further scheme of the present invention: described compatilizer uses double maleic anhydride or maleic anhydride or both mixing Thing.
As the further scheme of the present invention: described compatilizer uses double maleic anhydride.
A kind of red mud MODIFIED PP composite, for the method preparing double-wall corrugated pipe, comprises the steps of
(1) red mud powder is put into batch mixing kneader, batch mixing kneader is controlled in rotating speed 1000 revs/min, temperature Keep 2～5 minutes under the conditions of 100～110 DEG C, to control free moisture in red mud powder less than or equal to 0.3%；
(2) it is subsequently adding calcium stearate, solid packing alignment agent P2010, red mud powder is carried out surface active, pinches in batch mixing Conjunction machine stirs 5～10min；
(3) mediate temperature and be down to 48～52 DEG C, add polypropylene hybrid resin, compatilizer, anti-impact agent, defoamer and erucic acid Amide stirs, and then discharging is stand-by；
(4) above-mentioned red mud MODIFIED PP composite is placed in extruding pipe material in double main frame cone twin screw device, through module, true Empty, cooling molding, cut, pack prepared double-wall corrugated pipe.(similar with other corrugated tube tubing, to repeat no more).
As the further scheme of the present invention: double main frame cone twin screw device in described step (4), by PE double-wall corrugated pipe Forming machine and following equipment are constituted:
A () uses the double 80/156 main motor current 55kW of cone as the outer wall machine of corrugated tube main frame；
B () uses the double 65/132 main motor current 37kW of cone as the inwall machine of corrugated tube main frame；
C () die head extrusion compression ratio compares unclassified stores extrusion compression ratio relatively big, in (2.0～2.8): 1, is filled in polypropylene Red mud powder in hybrid resin makes the overall flow performance of material substantially reduce, and runner should be avoided drastically to change or occur as far as possible Thickener phenomenon caused by step, it addition, increase coldplate at die head exit, makes goods touch the coefficient of expansion and reduces.
Compared with prior art, the invention has the beneficial effects as follows: red mud MODIFIED PP composite of the present invention use polypropylene with POE is blended and the use of inorganic rigid nanoparticle, well solves the deficiencies in the prior art, meets corrugated tube high rigidity While there is again stronger toughness.Meanwhile, add compatilizer and solid packing alignment agent solves red mud in PP material Poor fluidity is difficult to the problem of processing, makes traditional industry waste material red mud, has had stable channel to consume, and has saved a large amount of Soil, effectively inhibits the serious pollution causing environment, produces good recycling economy, society, environmental benefit.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, aobvious So, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all Belong to the scope of protection of the invention.
In the embodiment of the present invention, a kind of red mud MODIFIED PP composite and the double-wall corrugated pipe manufactured with it, described red mud is modified PP composite use raw material have: polypropylene hybrid resin, red mud powder, anti-impact agent, compatilizer, defoamer, other Auxiliary agent.Wherein, polypropylene hybrid resin is made up of PP4220, PP001, PP reworked material；Other auxiliary agents by calcium stearate, Solid packing alignment agent P2010, erucyl amide form.Polypropylene hybrid resin degree of crystallinity is relatively big, and material stiffness is good, PP4220, PP001 is pure material, PP reworked material melt flow rate (MFR) (190 DEG C of 5kg) ＜ 1.0, elongation at break >=200, and stretching is strong Degree >=18MPa, ash ＜ 5；Add solid packing alignment agent P2010, erucyl amide can make red mud fill the flowing of PP material Property is good.Said composition has higher melt strength, rigidity and thermostability, has both good shock resistance and processability simultaneously Energy.As draining, blow-off pipe and be used as communication cable, the protection pipe of optical cable, the PP corrugated tube low cost of making, ring stiffness Up to 12, ring flexibility does not ftractures.Red mud powder is commercially available prod, is purchased from Shandong Yu Ze Environmental Protection Technology Co., Ltd, grain Footpath 0.002～0.01mm.Defoamer is commercially available prod, such as the foam eliminating mother particle of Jinhu County's Scott.
Preparation technology:
(1) red mud powder is put into batch mixing kneader, batch mixing kneader is controlled in rotating speed 1000 revs/min, temperature Keep 2～5 minutes under the conditions of 100～110 DEG C, to control free moisture in red mud powder less than or equal to 0.3%；
(2) it is subsequently adding calcium stearate, solid packing alignment agent P2010, red mud powder is carried out surface active, pinches in batch mixing Conjunction machine stirs 5～10min；
(3) mediate temperature be down to 48～52 DEG C, add polypropylene hybrid resin, double maleic anhydride, POE, foam eliminating mother particle with Erucyl amide stirs, and then discharging is stand-by.
(4) above-mentioned red mud MODIFIED PP composite is placed in extruding pipe material in double main frame cone twin screw device, through module, true Empty, cooling molding, cut, pack prepared double-wall corrugated pipe.(similar with other corrugated tube tubing, to repeat no more).
The following is the proportioning raw materials of various embodiments of the present invention, each component by kilogram based on, as shown in table 1.
Table 1
Embodiment 1
(1) by above-mentioned weight, red mud powder is put into batch mixing kneader, batch mixing kneader is controlled rotating speed 1000 revs/min, Keep 2 minutes under the conditions of temperature 100 DEG C, to control free moisture in red mud powder less than or equal to 0.3%；
(2) it is subsequently adding calcium stearate, solid packing alignment agent P2010, red mud powder is carried out surface active, pinches in batch mixing Conjunction machine stirs 5min；
(3) mediate temperature and be down to 48 DEG C, add polypropylene hybrid resin, double maleic anhydride, POE, foam eliminating mother particle, erucic acid Amide, stirs, and then discharging is stand-by.
(4) by compound with double main frames cone twin screw device extruding pipe materials, through module, vacuum, cooling molding, cutting, Packaging prepares the double-wall corrugated pipe of dn600, SN4.(similar with other corrugated tube tubing, to repeat no more).
Embodiment 2
(1) by above-mentioned weight, red mud powder is put into batch mixing kneader, batch mixing kneader is controlled rotating speed 1000 revs/min, Keep 5 minutes under the conditions of temperature 110 DEG C, to control free moisture in red mud powder less than or equal to 0.3%；
(2) it is subsequently adding calcium stearate, solid packing alignment agent P2010, red mud powder is carried out surface active, pinches in batch mixing Conjunction machine stirs 10min；
(3) mediate temperature and be down to 50 DEG C, add polypropylene hybrid resin, double maleic anhydride, POE, foam eliminating mother particle, erucic acid Amide stirs, and then discharging is stand-by.
(4) by compound with double main frames cone twin screw device extruding pipe materials, through module, vacuum, cooling molding, cutting, Packaging prepares the double-wall corrugated pipe of dn600, SN4.(similar with other corrugated tube tubing, to repeat no more).
Embodiment 3
(1) by weight red mud powder is put into batch mixing kneader, batch mixing kneader is controlled rotating speed 1000 revs/min, temperature Keep 2 minutes under the conditions of spending 100 DEG C, to control free moisture in red mud powder less than or equal to 0.3%；
(2) it is subsequently adding calcium stearate, solid packing alignment agent P2010, red mud powder is carried out surface active, pinches in batch mixing Conjunction machine stirs 10min；
(3) mediate temperature and be down to 52 DEG C, add polypropylene hybrid resin, double maleic anhydride, POE, foam eliminating mother particle, erucic acid Amide stirs, and then discharging is stand-by.
(4) by compound with double main frames cone twin screw device extruding pipe materials, through module, vacuum, cooling molding, cutting, Packaging prepares the double-wall corrugated pipe of dn600, SN4.(similar with other corrugated tube tubing, to repeat no more).
Embodiment 4
(1) by weight red mud powder is put into batch mixing kneader, batch mixing kneader is controlled rotating speed 1000 revs/min, temperature Keep 5 minutes under the conditions of spending 105 DEG C, to control free moisture in red mud powder less than or equal to 0.3%；
(2) it is subsequently adding calcium stearate, solid packing alignment agent P2010, red mud powder is carried out surface active, pinches in batch mixing Conjunction machine stirs 5min；
(3) mediate temperature and be down to 48 DEG C, add polypropylene hybrid resin, double maleic anhydride, POE, foam eliminating mother particle, erucic acid Amide stirs, and then discharging is stand-by.
(4) by compound with double main frames cone twin screw device extruding pipe materials, through module, vacuum, cooling molding, cutting, Packaging prepares the double-wall corrugated pipe of dn600, SN4.(similar with other corrugated tube tubing, to repeat no more).
The double-wall corrugated pipe made by the present invention detects according to the requirement of GBT 19472.2-2004, concrete representative value such as table 2 Shown in.
Table 2
It is clear that use thinner wall thickness with the double-wall corrugated pipe of present invention making, main performance index also can reach relevant Examination criteria.
The present invention has the advantage that:
1. solve the waste residue problem of aluminium metallurgy factory, make traditional industry waste material-red mud, had stable channel to consume, save A large amount of soils, effectively inhibit the serious pollution causing environment, produce good recycling economy, society, environment Benefit.
On the premise of not reducing pipe performance, compared with PE double-wall corrugated pipe, that can design is more frivolous, effectively Reducing tubing cost, ton cost can as little as 7000 yuan, has more preferable market prospect and economic benefit
3. the double-wall corrugated pipe made by this PP Pipe Compound has Chinese red outward appearance, elegant in appearance.
4. red mud has good stability and a resistance to ag(e)ing, and anti-flammability is permissible compared with the composite that other fillers make Significantly extending the service life of product, according to pertinent literature, the life-span can reach 100 years.
5. the corrugated tube made of this composite, ring stiffness and ring flexibility are good, and impact strength is high.
6. contrast with PE 600 corrugated tube 90/33,75/33 single screw extrusion machine, 90/33 main motor current 132kW, 75/33 Main motor current 90kW；PP 600 corrugated tube employing outer wall machine cone double 80/156, inwall machine cone double 65/132, more energy efficient, Comprehensive energy consumption PP corrugated tube is lower than the energy consumption of PE corrugated tube by about 40%.
Term is explained:
Double-wall corrugated pipe: a kind of novel tube with circulus outer wall and smooth internal walls.
PP: polypropylene, the crystalline polymer of a kind of compound with regular structure, one of five big general-purpose plastics.
Red mud: red mud is the contaminative waste residue discharged during aluminium industry extraction aluminium oxide.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and do not carrying on the back In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim Change is included in the present invention.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can With other embodiments understood.

Claims (7)

1. a red mud MODIFIED PP composite, it is characterised in that be made up of the component of following weight portion: polypropylene mixes Resin 100 parts, red mud powder 60～80 parts, anti-impact agent 10～20 parts, compatilizer 0～10 parts, defoamer 0～10 parts, other Auxiliary agent 0～10 parts；Described polypropylene hybrid resin is made up of PP4220, PP001 and PP reworked material；Other auxiliary agents described are Calcium stearate, solid packing alignment agent P2010 and the mixture of erucyl amide.
Red mud MODIFIED PP composite the most according to claim 1, it is characterised in that by the component of following weight portion Make: polypropylene hybrid resin 100 parts, red mud powder 65～75 parts, anti-impact agent 15～20 parts, compatilizer 3～5 parts, froth breaking Agent 3～5 parts, other auxiliary agents 3～5 parts；Wherein, in polypropylene hybrid resin, the matter of PP4220: PP001: PP reworked material Amount ratio is 1.5～2.5: 0.5～1.5: 3～5；Calcium stearate in other auxiliary agents: solid packing alignment agent P2010: erucic acid acyl The mass ratio of amine is 2.5～3.5: 2.5～3.5: 0.5～2.
3. according to the arbitrary described red mud MODIFIED PP composite of claim 1-2, it is characterised in that described anti-impact agent Use POE.
4. according to the arbitrary described red mud MODIFIED PP composite of claim 1-2, it is characterised in that described compatilizer is adopted With double maleic anhydrides or maleic anhydride or both mixture.
Red mud MODIFIED PP composite the most according to claim 4, it is characterised in that described compatilizer uses double Maleic anhydride.
6. the red mud MODIFIED PP composite as described in claim 1-2 is arbitrary is for the method preparing double-wall corrugated pipe, It is characterized in that, comprise the steps of
(1) red mud powder is put into batch mixing kneader, batch mixing kneader is controlled in rotating speed 1000 revs/min, temperature Keep 2～5 minutes under the conditions of 100～110 DEG C；
(2) it is subsequently adding calcium stearate, solid packing alignment agent P2010, red mud powder is carried out surface active, pinches in batch mixing Conjunction machine stirs 5～10min；
(3) mediate temperature and be down to 48～52 DEG C, add polypropylene hybrid resin, compatilizer, anti-impact agent, defoamer and erucic acid Amide stirs, and then to obtain red mud MODIFIED PP composite stand-by in discharging；
(4) above-mentioned red mud MODIFIED PP composite is placed in extruding pipe material in double main frame cone twin screw device, through module, true Empty, cooling molding, cut, pack prepared double-wall corrugated pipe.
Red mud MODIFIED PP composite the most according to claim 6 is for the method preparing double-wall corrugated pipe, its feature Being, in described step (4), double main frame cone twin screw device are made up of PE double-walled corrugated pipe forming machine and following equipment:
A () uses the double 80/156 main motor current 55kW of cone as the outer wall machine of corrugated tube main frame；
B () uses the double 65/132 main motor current 37kW of cone as the inwall machine of corrugated tube main frame；
C () die head extrusion compression ratio, 2.0～2.8: 1, increases at die head exit and makes goods touch the cold of coefficient of expansion reduction But plate.
CN201510193588.1A 2015-04-16 2015-04-16 A kind of red mud MODIFIED PP composite and the method being used for preparing double-wall corrugated pipe thereof Pending CN106147012A (en)

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CN112961436A (en) * 2021-03-03 2021-06-15 海南蓝岛环保产业股份有限公司 Plastic product and preparation method thereof
CN114409991A (en) * 2022-02-22 2022-04-29 中国铝业股份有限公司 Method for preparing polyolefin composite material by modifying bauxite ore washing mud

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112961436A (en) * 2021-03-03 2021-06-15 海南蓝岛环保产业股份有限公司 Plastic product and preparation method thereof
CN114409991A (en) * 2022-02-22 2022-04-29 中国铝业股份有限公司 Method for preparing polyolefin composite material by modifying bauxite ore washing mud

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