CN110256753A - A kind of corrosion-resistant polyethylene communication tube and preparation method thereof - Google Patents
A kind of corrosion-resistant polyethylene communication tube and preparation method thereof Download PDFInfo
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- CN110256753A CN110256753A CN201910604942.3A CN201910604942A CN110256753A CN 110256753 A CN110256753 A CN 110256753A CN 201910604942 A CN201910604942 A CN 201910604942A CN 110256753 A CN110256753 A CN 110256753A
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- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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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
- C08L2207/00—Properties characterising the ingredient of the composition
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Abstract
The invention discloses a kind of corrosion-resistant polyethylene communication tubes and preparation method thereof, it is related to tubing technical field, a kind of corrosion-resistant polyethylene communication tube, mainly include the raw material of following parts by weight: 80-90 parts of high density polyethylene (HDPE)s, 10-15 parts of ethylene propylene diene rubbers, 5-10 parts of modified fillers therefors, 2-5 parts of halogen-free flame retardants, 1-3 parts of UV age resisters, 4-6 parts of processing aids, the modified fillers therefor is by In2O3/ CNTs/ graphene grafted polyethylene is made, and the polyethylene is low molecular weight polyethylene.A kind of corrosion-resistant polyethylene communication tube of the invention and preparation method thereof, preparation gained polyethylene communication tube use In2O3/ CNTs/ graphene grafted polyethylene is as modified fillers therefor, good dispersion of the modified fillers therefor in basis material, and it is preferable to disperse rear stability.
Description
Technical field
The present invention relates to tubing technical fields more particularly to a kind of corrosion-resistant polyethylene communication tube and preparation method thereof.
Background technique
In recent years, with the increasingly progress of Process of Urbanization Construction, the construction of pipe network is communicated also in progress like a raging fire.And gather
Ethylene is a kind of by the aggregated thermoplastic resin obtained of ethylene, and since its is odorless, nontoxic, chemical stability is good, and in room temperature
Under resistance to most of soda acid characteristic, be suitable for prepare communication tube.
In the urban construction of communication pipe network, communication pipe network is often laid on underground, and underground piping is laid with to pipeline sheet
The requirement with higher of the mechanical property of body, existing polyethylene communication tube are wanted to meet the mechanical property of underground communication tube
It asks, often using the mode for adding inorganic non-metallic particle in pipeline basis material, then uses mechanical stirring, ball
The modes such as mill, ultrasonic disperse mix inorganic non-metallic particle and basis material, enable inorganic non-metallic particle compared with
Good is dispersed in basis material, reaches the filling by inorganic non-metallic particle with this come the mesh of modified matrix material properties
's.
An existing patent name is " a kind of polyethylene communication formulating of recipe for pipes ", Publication No. " CN105694182A "
Chinese invention patent joined carbon nanotube in the formula of polyethylene communication tube, then by low-speed mixer by raw material into
Row after stirring and mixing, then is prepared polyethylene in such a way that single screw extrusion machine squeezes out and communicates tubing.
Carbon nanotube (CNTs) is used as one-dimensional material, light-weight, has excellent mechanics, electricity and chemical property, CNTs
Tensile strength reaches 50~200GPa, is 100 times of steel, and density but only has the 1/6 of steel, at least one higher than ordinary graphite fiber
The order of magnitude；Its elasticity modulus is suitable with the elasticity modulus of diamond up to 1TPa, about 5 times of steel, and possesses good soft
Toughness can stretch, and be applied in the production process of polyethylene communication tube, composite material exhibits can be made to go out good strong
Degree, elasticity, fatigue resistance and isotropism, bring great improvement to the performance of composite material.
Make carbon nanotube bring biggish improvement to the performance of basis material, how uniform and stable to make carbon nanometer
Pipe be dispersed in basis material be urgent need to resolve critical problem, due to carbon nano tube surface defect is few, lack active group,
There are stronger Van der Waals forces between carbon nanotube, in addition its huge specific surface area and draw ratio, so that carbon nanotube is easily
It is formed and reunites or wind, therefore, in the prior art often by the way of mechanical dispersion or ultrasonic disperse, so that carbon nanometer
Pipe can be uniformly dispersed in basis material as far as possible, but not due to the binding force between carbon nanotube and basis material
By force, after being dispersed, once stopping mechanical or ultrasonic agitation, scattered carbon nanotube is easy to reunite again, so as to cause
Carbon nanotube weakens the reinforcing effect of basis material significantly.
Summary of the invention
In view of the above-mentioned problems, it is an object of the invention to design to provide a kind of corrosion-resistant polyethylene communication tube and its preparation side
Method, preparation gained polyethylene communication tube use In2O3/ CNTs/ graphene grafted polyethylene is as modified fillers therefor, Modification
Good dispersion of the agent in basis material, and it is preferable to disperse rear stability.
The present invention solves above-mentioned technical problem by following technological means:
A kind of corrosion-resistant polyethylene communication tube mainly includes the raw material of following parts by weight: 80-90 parts of high density polyethylene (HDPE)s,
10-15 parts of ethylene propylene diene rubbers, 5-10 parts of modified fillers therefors, 2-5 parts of halogen-free flame retardants, 1-3 parts of UV age resisters, 4-6 parts plus
Work auxiliary agent, the modified fillers therefor are by In2O3/ CNTs/ graphene grafted polyethylene is made, and the polyethylene is low molecular weight
Polyethylene.
Modified fillers therefor of the invention uses In2O3/ CNTs/ graphene grafted polyethylene is made, wherein In2O3Surface
Group rich in, and have biggish specific surface area by nanometer In2O3It is attached to the surface of CNTs, i.e., is drawn on the surface CNTs
Group abundant is entered, has increased the active site on the surface CNTs, be conducive to compound between CNTs and graphene, and has incited somebody to action
In2O3/ CNTs and graphene carry out compound, In2O3/ CNTs and graphene sheet layer crosslinking, form three-dimensional interconnecting channels, not only increase
Strong interfacial contact, and the reunion of carbon nanotube is prevented, be conducive to dispersion of the modified fillers therefor in basis material, finally
In In2O3The polyethylene of/CNTs/ graphene surface grafting can increase modification and fill out due to essentially identical with basis material
Wellability between agent and basis material is filled, modified fillers therefor is preferably merged between aggregate material, and be grafted on
In2O3The polyethylene of/CNTs/ graphene surface, can crosslink between the high density polyethylene (HDPE) of matrix, to increase
In2O3Binding force between/CNTs/ graphene and basis material can effectively prevent scattered modified fillers therefor from stopping
Mechanical or ultrasonic agitation and then it is secondary reunite, to ensure that modified fillers therefor to basis material to a certain extent
Reinforcing effect.
In addition, using In2O3/ CNTs/ graphene is as modified additive, In therein2O3, CNTs addition can
Increase toughness, shock resistance and the corrosion resistance of organism material, and the addition of grapheme material can increase communication tube
Electromagnetism interference performance not only ensure that the dispersion performance of each ingredient, and can complement each other as composite material,
Synergy reaches better effect.
It further, mainly include the raw material of following parts by weight: 85 parts of high density polyethylene (HDPE)s, 12 parts of ethylene propylene diene rubbers, 8 parts
Modified fillers therefor, 3 parts of halogen-free flame retardants, 2 parts of UV age resisters, 5 parts of processing aids.
Further, the In2O3/ CNTs/ graphene is to load nanometer In by CNTs2O3And then it is answered with graphene
It closes and is made.
Further, the processing aid includes following components according to parts by weight: 5-10 parts of carbon blacks, 10-15 parts of stearic acid
Zinc, 1-5 part tetrapentaerythritol.
Polyethylene is easy photooxidation, degradation is easy to happen under the action of ultraviolet light, therefore joined charcoal in raw material
Black and UV age resister, can increase to a certain extent the service life of tubing, and joined stearic acid and tetrapentaerythritol
As lubricant, the processability of material can be increased.
The invention also discloses a kind of preparation method of corrosion-resistant polyethylene communication tube, the preparation method includes following step
It is rapid:
It is just mixed: high density polyethylene (HDPE), the modified fillers therefor of 1/4 parts by weight are added in xylene solution, after stirring and evenly mixing,
120 DEG C, insulation reaction 3h are warming up to, reactant is washed with methanol after the reaction was completed and filters afterwards three times, is dry；
Premix: product is prepared in first mixed step and is placed in blended under agitation machine, it is anti-ageing to sequentially add halogen-free flame retardants, UV
Agent, processing aid after being uniformly mixed, are placed in double screw extruder, are 150-160r/min, temperature in twin-screw revolving speed
Degree squeezes out after 20-25min is blended under the conditions of being 200-210 DEG C, granulation obtains functional particles；
Extrusion molding: remaining high density polyethylene (HDPE), ethylene propylene diene rubber and functional particles are uniformly mixed, are set
It is squeezed out in single screw extrusion machine, is 180-185 DEG C in barrel temperature, head temperature is 190-195 DEG C, is drawn as 0.6-
0.9m/min, engine speed are extrusion molding under conditions of 25-30r/min, obtain finished product.
During preparation, first modified fillers therefor and fraction high density polyethylene (HDPE) are carried out it is uniformly mixed so that changing
Property filler low molecular polyethylene and high density polyethylene (HDPE) generate crosslinking, then mixed, formed with processing aid etc. again
Functional particles, on the one hand, it is increased just to mix pre-mixing process, it will first measure few raw material and mix, then squeezed again
It forms, can be mixed more evenly out, on the other hand, modified fillers therefor is first mixed and is crosslinked with part high density polyethylene (HDPE), then
It is mixed again with remaining high density polyethylene (HDPE), mixed effect is more preferable, and the combination between modified fillers therefor and basis material
It is closer.
Further, the modified fillers therefor the preparation method comprises the following steps: by In2O3/ CNTs/ graphene passes through low temperature plasma
It is scattered in after processing in isooctanol solution, the low molecular weight polyethylene Jing Guo ozone oxidation is added, it is lasting to stir, in nitrogen atmosphere
Under be heated to 95 DEG C, reaction product is washed with methanol filter afterwards three times after the reaction was completed by insulation reaction 20h, and in 50 DEG C of items
12h is dried under part, obtains modified fillers therefor.
Further, the Low Temperature Plasma Treating is the power 60-80W using oxygen as working gas, pressure 6-
8Pa, processing time are 80-100s, the process conditions of the ozone oxidation are as follows: ozone concentration 0.5%-1.0% handles the time
For 1-2h.
To In2O3After/CNTs/ graphene is handled using low temperature plasma, in In2O3/ CNTs/ graphene
Surface introduce the oxygen-containing groups such as a large amount of hydroxyl, carboxyl, and improve In2O3The surface-active of/CNTs/ graphene, and it is right
The ozone Oxidation Treatment of low molecular weight polyethylene, so that the H on low molecular weight polyethylene carbon atom generates big point by ozone oxidation
Son free radical, then by Jing Guo ozone oxidation low molecular polyethylene and by low-temperature plasma handle In2O3/ CNTs/ graphite
Alkene carries out hybrid reaction, the macromolecular radical of low molecular weight polyethylene can and In2O3Hydroxyl etc. on/CNTs/ graphene contains
Oxygen groups are reacted, so that low molecular polyethylene is grafted to In2O3On/CNTs/ graphene, final Modification is obtained
Agent.
Further, the In2O3/ CNTs/ graphene the preparation method comprises the following steps:
Nanometer In2O3The preparation of/CNTs: by the CNTs ultrasonic disperse by nitration mixture oxidation in In2(SO4)3In solution, then
Ammonia spirit is added dropwise with the speed of 1-3d/s under ultrasound condition, is stood after being added dropwise to complete for 24 hours, by reaction product filtering, drying
It is placed in Muffle furnace and calcines, obtain a nanometer In2O3/CNTs；
In2O3The preparation of/CNTs/ graphene: the nanometer In that will be prepared2O3/ CNTs is scattered in deionized water, is added
Entering graphene oxide, ultrasonic agitation after mixing, is heated to 50 DEG C, insulation reaction 1h, and ammonia spirit is added and adjusts pH to 10,
2h is reacted, is filtered after the reaction was completed, and after being washed with deionized to cleaning solution and being in neutrality, under the conditions of 60 DEG C after dry 12h
It takes out, is placed in ball milling in planetary ball mill and obtains In2O3/ CNTs/ graphene.
Further, the nanometer In2O3The detailed process calcined in the preparation step of/CNTs are as follows: first with 2-3 DEG C/min
Speed be warming up to 400 DEG C of heat preservations calcining 0.5-1h after, then 600 DEG C of heat preservations are warming up to the speed of 1-2 DEG C/min and calcine 1-2h,
Then 750 DEG C of heat preservation 2h are warming up to the speed of 2-5 DEG C/min, are kept the temperature after being finally cooled to 200 DEG C with the speed of 5 DEG C/min
0.5h。
Beneficial effects of the present invention:
A kind of corrosion-resistant polyethylene communication tube of the invention, modified fillers therefor therein use In2O3/ CNTs/ graphene connects
Branch polyethylene is made, nanometer In2O3It is attached to the surface of CNTs, the active site on the surface CNTs is increased, is conducive to CNTs and stone
It is compound between black alkene, and by In2O3/ CNTs and graphene progress are compound, not only increase interfacial contact, and prevent carbon
The reunion of nanotube is conducive to dispersion of the modified fillers therefor in basis material, finally in In2O3/ CNTs/ graphene surface connects
The polyethylene of branch, enables modified fillers therefor preferably to merge between aggregate material, and can be poly- with the high density of matrix
It is crosslinked between ethylene, to increase In2O3Binding force between/CNTs/ graphene and basis material, can be effective
Prevent scattered modified fillers therefor stop mechanical or ultrasonic agitation and then it is secondary reunite, thus to a certain extent
It ensure that modified fillers therefor to the reinforcing effect of basis material.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in detail:
A kind of corrosion-resistant polyethylene communication tube of the invention and preparation method thereof, modified fillers therefor is by In in raw material2O3/
CNTs/ graphene grafted polyethylene is made, and wherein polyethylene is low molecular weight polyethylene, In2O3/ CNTs/ graphene is by CNTs
Load nanometer In2O3And then compound be made is carried out with graphene.
Embodiment one
Modified fillers therefor preparation 1
The oxidation of CNTs: CNTs is placed in mixed acid solution, and wherein mixed acid solution is by the concentrated sulfuric acid and concentrated nitric acid according to body
Product is dispersed with stirring, due to being heated to 110 DEG C, heat preservation reflux 4h, cooled to room temperature is taken out than being to be made after 3:1 is mixed
Filter, filter cake is washed with deionized to cleaning solution and is in neutrality, dry at 80 DEG C, obtains the CNTs aoxidized by nitration mixture.
Nanometer In2O3The preparation of/CNTs: being that 1g/L will pass through the CNTs ultrasonic disperse of nitration mixture oxidation in 1g/ according to solid-to-liquid ratio
The In of ml2(SO4)3It is then 25KHz in frequency, power is under 120W ultrasound condition with the speed of 1-3d/s, preferably in solution
1/5In is added dropwise in the speed for being 2d/s2(SO4)3The 1mol/L ammonia spirit of liquor capacity is stood for 24 hours after being added dropwise to complete, will be anti-
Product is answered to filter, and dry be placed in Muffle furnace is calcined under the conditions of 60 DEG C, is warming up to 400 first with the speed of 2 DEG C/min
After DEG C heat preservation calcining 0.5h, then 600 DEG C of heat preservations are warming up to the speed of 2 DEG C/min and calcine 1h, then with the speed liter of 2 DEG C/min
Temperature is finally cooled to after 200 DEG C with the speed of 5 DEG C/min to 750 DEG C of heat preservation 2h and keeps the temperature 0.5h, furnace cooling obtains nanometer
In2O3/CNTs。
In2O3The preparation of/CNTs/ graphene: the nanometer In that will be prepared2O3/ CNTs is scattered in deionized water, is added
The nanometers In such as enter2O3The graphene oxide of/CNTs mass, ultrasonic agitation after mixing, are heated to 50 DEG C, lasting to stir, heat preservation
1h is reacted, 1mol/L ammonia spirit is added and adjusts pH to 10, insulation reaction 2h is filtered after the reaction was completed, and is washed with deionized water
It washs to cleaning solution after being in neutrality, takes out, be placed in planetary ball mill with 350r/min speed after dry 12h under the conditions of 60 DEG C
Ball milling 5min obtains In2O3/ CNTs/ graphene.
Modified fillers therefor the preparation method comprises the following steps: by In2O3/ CNTs/ graphene is using oxygen as working gas, in power
Process etc. is added after Low Temperature Plasma Treating 80s, to be scattered in isooctanol solution under conditions of 6Pa in 80W, pressure
In2O3The low molecular weight polyethylene of the ozone oxidation of/CNTs/ graphene quality, it is lasting to stir, it is heated to 95 in a nitrogen atmosphere
DEG C, reaction product is washed with methanol filter afterwards three times after the reaction was completed by insulation reaction 20h, and is done under the conditions of 50 DEG C
Dry 12h obtains modified fillers therefor, wherein the process conditions of low molecular weight polyethylene ozone oxidation are as follows: ozone concentration 1.0%,
The processing time is 1h.
Embodiment two
Modified fillers therefor preparation 2
The oxidation of CNTs is the same as example 1.
Nanometer In2O3The preparation of/CNTs: being that 1g/L will pass through the CNTs ultrasonic disperse of nitration mixture oxidation in 1g/ according to solid-to-liquid ratio
The In of ml2(SO4)3It is then 25KHz in frequency, power is under 120W ultrasound condition with the speed of 1-3d/s, preferably in solution
1/5In is added dropwise in the speed for being 2d/s2(SO4)3The 1mol/L ammonia spirit of liquor capacity is stood for 24 hours after being added dropwise to complete, will be anti-
Product is answered to filter, and dry be placed in Muffle furnace is calcined under the conditions of 60 DEG C, is warming up to 400 first with the speed of 3 DEG C/min
After DEG C heat preservation calcining 1h, then 600 DEG C of heat preservations calcining 2h are warming up to the speed of 1 DEG C/min, then with the speed heating of 5 DEG C/min
To 750 DEG C of heat preservation 2h, finally it is cooled to after 200 DEG C with the speed of 5 DEG C/min and keeps the temperature 0.5h, furnace cooling obtains a nanometer In2O3/
CNTs。
In2O3The preparation of/CNTs/ graphene: the nanometer In that will be prepared2O3/ CNTs is scattered in deionized water, is added
The nanometers In such as enter2O3The graphene oxide of/CNTs mass, ultrasonic agitation after mixing, are heated to 50 DEG C, lasting to stir, heat preservation
1h is reacted, 1mol/L ammonia spirit is added and adjusts pH to 10, insulation reaction 2h is filtered after the reaction was completed, and is washed with deionized water
It washs to cleaning solution after being in neutrality, takes out, be placed in planetary ball mill with 350r/min speed after dry 12h under the conditions of 60 DEG C
Ball milling 5min obtains In2O3/ CNTs/ graphene.
Modified fillers therefor the preparation method comprises the following steps: by In2O3/ CNTs/ graphene is using oxygen as working gas, in power
Process etc. is added after Low Temperature Plasma Treating 100s, to be scattered in isooctanol solution under conditions of 8Pa in 60W, pressure
In2O3The low molecular weight polyethylene of the ozone oxidation of/CNTs/ graphene quality, it is lasting to stir, it is heated to 95 in a nitrogen atmosphere
DEG C, reaction product is washed with methanol filter afterwards three times after the reaction was completed by insulation reaction 20h, and is done under the conditions of 50 DEG C
Dry 12h obtains modified fillers therefor, wherein the process conditions of low molecular weight polyethylene ozone oxidation are as follows: ozone concentration 0.5%,
The processing time is 2h.
Embodiment three
Modified fillers therefor preparation 3
The oxidation of CNTs is the same as example 1.
Nanometer In2O3The preparation of/CNTs: being that 1g/L will pass through the CNTs ultrasonic disperse of nitration mixture oxidation in 1g/ according to solid-to-liquid ratio
The In of ml2(SO4)3It is then 25KHz in frequency, power is under 120W ultrasound condition with the speed of 1-3d/s, preferably in solution
1/5In is added dropwise in the speed for being 2d/s2(SO4)3The 1mol/L ammonia spirit of liquor capacity is stood for 24 hours after being added dropwise to complete, will be anti-
Product is answered to filter, and dry be placed in Muffle furnace is calcined under the conditions of 60 DEG C, is warming up to 400 first with the speed of 2 DEG C/min
After DEG C heat preservation calcining 1h, then 600 DEG C of heat preservations calcining 1h are warming up to the speed of 2 DEG C/min, then with the speed heating of 3 DEG C/min
To 750 DEG C of heat preservation 2h, finally it is cooled to after 200 DEG C with the speed of 5 DEG C/min and keeps the temperature 0.5h, furnace cooling obtains a nanometer In2O3/
CNTs。
In2O3The preparation of/CNTs/ graphene: the nanometer In that will be prepared2O3/ CNTs is scattered in deionized water, is added
The nanometers In such as enter2O3The graphene oxide of/CNTs mass, ultrasonic agitation after mixing, are heated to 50 DEG C, lasting to stir, heat preservation
1h is reacted, 1mol/L ammonia spirit is added and adjusts pH to 10, insulation reaction 2h is filtered after the reaction was completed, and is washed with deionized water
It washs to cleaning solution after being in neutrality, takes out, be placed in planetary ball mill with 350r/min speed after dry 12h under the conditions of 60 DEG C
Ball milling 5min obtains In2O3/ CNTs/ graphene.
Modified fillers therefor the preparation method comprises the following steps: by In2O3/ CNTs/ graphene is using oxygen as working gas, in power
Process etc. is added after Low Temperature Plasma Treating 90s, to be scattered in isooctanol solution under conditions of 7Pa in 70W, pressure
In2O3The low molecular weight polyethylene of the ozone oxidation of/CNTs/ graphene quality, it is lasting to stir, it is heated to 95 in a nitrogen atmosphere
DEG C, reaction product is washed with methanol filter afterwards three times after the reaction was completed by insulation reaction 20h, and is done under the conditions of 50 DEG C
Dry 12h obtains modified fillers therefor, wherein the process conditions of low molecular weight polyethylene ozone oxidation are as follows: ozone concentration 0.8%,
The processing time is 2h.
Example IV
The preparation 1 of polyethylene communication tube
The present embodiment selects embodiment one to prepare resulting modified fillers therefor.
It is just mixed: high density polyethylene (HDPE), the 5Kg modified fillers therefor of 21Kg being added in xylene solution, after stirring and evenly mixing, rises
To 120 DEG C, reactant is washed with methanol filter afterwards three times after the reaction was completed temperature by insulation reaction 3h, and filter cake is dry at 50 DEG C.
Premix: product is prepared in first mixed step and is placed in blended under agitation machine, 3Kg halogen-free flame retardants, 2Kg are sequentially added
UV age resister, 5Kg processing aid, wherein plus middle auxiliary agent include 5 parts of carbon blacks, 10 parts of zinc stearates, 3 parts of tetrapentaerythritols,
It after being uniformly mixed under 500r/min speed, is placed in double screw extruder, is 160r/min in twin-screw revolving speed, temperature is
It is squeezed out after blending 23min under the conditions of 210 DEG C, granulation obtains functional particles.
Extrusion molding: by remaining 64Kg high density polyethylene (HDPE), 12Kg ethylene propylene diene rubber and preparation gained functional
Grain is uniformly mixed, and is placed in single screw extrusion machine and is squeezed out, and is 184 DEG C in barrel temperature, head temperature is 190 DEG C, traction
For 0.6m/min, engine speed is extrusion molding under conditions of 30r/min, obtains finished product.
Embodiment five
The preparation 2 of polyethylene communication tube
The present embodiment selects embodiment one to prepare resulting modified fillers therefor.
It is just mixed: high density polyethylene (HDPE), the 10Kg modified fillers therefor of 20Kg are added in xylene solution, after stirring and evenly mixing,
120 DEG C are warming up to, reactant is washed with methanol filter afterwards three times after the reaction was completed by insulation reaction 3h, and filter cake is done at 50 DEG C
It is dry.
Premix: product is prepared in first mixed step and is placed in blended under agitation machine, 2Kg halogen-free flame retardants, 3Kg are sequentially added
UV age resister, 6Kg processing aid, wherein plus middle auxiliary agent include 10 parts of carbon blacks, 12 parts of zinc stearates, 5 parts of tetrapentaerythritols,
It after being uniformly mixed under 500r/min speed, is placed in double screw extruder, is 150r/min in twin-screw revolving speed, temperature is
It is squeezed out after blending 25min under the conditions of 200 DEG C, granulation obtains functional particles.
Extrusion molding: by remaining 60Kg high density polyethylene (HDPE), 10Kg ethylene propylene diene rubber and preparation gained functional
Grain is uniformly mixed, and is placed in single screw extrusion machine and is squeezed out, and is 180 DEG C in barrel temperature, head temperature is 193 DEG C, traction
For 0.9m/min, engine speed is extrusion molding under conditions of 25r/min, obtains finished product.
Embodiment six
The preparation 3 of polyethylene communication tube
The present embodiment selects embodiment one to prepare resulting modified fillers therefor.
It is just mixed: high density polyethylene (HDPE), the 8Kg modified fillers therefor of 22Kg being added in xylene solution, after stirring and evenly mixing, rises
To 120 DEG C, reactant is washed with methanol filter afterwards three times after the reaction was completed temperature by insulation reaction 3h, and filter cake is dry at 50 DEG C.
Premix: product is prepared in first mixed step and is placed in blended under agitation machine, 5Kg halogen-free flame retardants, 1Kg are sequentially added
UV age resister, 4Kg processing aid, wherein plus middle auxiliary agent include 8 parts of carbon blacks, 15 parts of zinc stearates, 1 part of tetrapentaerythritol,
It after being uniformly mixed under 500r/min speed, is placed in double screw extruder, is 155r/min in twin-screw revolving speed, temperature is
It is squeezed out after blending 20min under the conditions of 205 DEG C, granulation obtains functional particles.
Extrusion molding: by remaining 68Kg high density polyethylene (HDPE), 15Kg ethylene propylene diene rubber and preparation gained functional
Grain is uniformly mixed, and is placed in single screw extrusion machine and is squeezed out, and is 185 DEG C in barrel temperature, head temperature is 195 DEG C, traction
For 0.7m/min, engine speed is extrusion molding under conditions of 28r/min, obtains finished product.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement should all cover without departing from the objective and range of technical solution of the present invention in claim of the invention
In range.Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (9)
1. a kind of corrosion-resistant polyethylene communication tube, which is characterized in that mainly include the raw material of following parts by weight: 80-90 parts highly dense
It is anti-aging to spend polyethylene, 10-15 parts of ethylene propylene diene rubbers, 5-10 parts of modified fillers therefors, 2-5 parts of halogen-free flame retardants, 1-3 parts of UV
Agent, 4-6 parts of processing aids, the modified fillers therefor is by In2O3/ CNTs/ graphene grafted polyethylene is made, the polyethylene
For low molecular weight polyethylene.
2. a kind of corrosion-resistant polyethylene communication tube according to claim 1, which is characterized in that mainly include following parts by weight
Raw material: 85 parts of high density polyethylene (HDPE)s, 12 parts of ethylene propylene diene rubbers, 8 parts of modified fillers therefors, 3 parts of halogen-free flame retardants, 2 parts of UV are anti-
Aging agent, 5 parts of processing aids.
3. a kind of corrosion-resistant polyethylene communication tube according to claim 1, which is characterized in that the In2O3/ CNTs/ graphite
Alkene is to load nanometer In by CNTs2O3And then compound be made is carried out with graphene.
4. a kind of corrosion-resistant polyethylene communication tube according to claim 3, which is characterized in that the processing aid is by weight
Number meter includes following components: 5-10 parts of carbon blacks, 10-15 parts of zinc stearates, 1-5 parts of tetrapentaerythritols.
5. a kind of preparation method of corrosion-resistant polyethylene communication tube described in -4 any claims according to claim 1, special
Sign is that the preparation method comprises the following steps:
It is just mixed: high density polyethylene (HDPE), the modified fillers therefor of 1/4 parts by weight are added in xylene solution, after stirring and evenly mixing, heating
To 120 DEG C, insulation reaction 3h, reactant is washed with methanol after the reaction was completed and filters afterwards three times, is dry；
Premix: product is prepared in first mixed step and is placed in blended under agitation machine, it is anti-aging to sequentially add halogen-free flame retardants, UV
Agent, processing aid after being uniformly mixed, are placed in double screw extruder, are 150-160r/min, temperature in twin-screw revolving speed
It squeezes out, be granulated after blending 20-25min under the conditions of being 200-210 DEG C, obtain functional particles；
Extrusion molding: remaining high density polyethylene (HDPE), ethylene propylene diene rubber and functional particles are uniformly mixed, list is placed in
It is squeezed out in screw extruder, is 180-185 DEG C in barrel temperature, head temperature is 190-195 DEG C, is drawn as 0.6-0.9m/
Min, engine speed are extrusion molding under conditions of 25-30r/min, obtain finished product.
6. a kind of preparation method of corrosion-resistant polyethylene communication tube according to claim 5, which is characterized in that the modification
Filler the preparation method comprises the following steps: by In2O3/ CNTs/ graphene is scattered in isooctanol solution after Low Temperature Plasma Treating
In, the low molecular weight polyethylene Jing Guo ozone oxidation is added, it is lasting to stir, it is heated to 95 DEG C in a nitrogen atmosphere, insulation reaction
Reaction product is washed with methanol filter afterwards three times after the reaction was completed by 20h, and 12h is dried under the conditions of 50 DEG C, is changed
Property filler.
7. a kind of preparation method of corrosion-resistant polyethylene communication tube according to claim 6, which is characterized in that the low temperature
Corona treatment is the power 60-80W using oxygen as working gas, and pressure 6-8Pa, the processing time is 80-100s,
The process conditions of the ozone oxidation are as follows: ozone concentration 0.5%-1.0%, processing time are 1-2h.
8. a kind of preparation method of corrosion-resistant polyethylene communication tube according to claim 7, which is characterized in that described
In2O3/ CNTs/ graphene the preparation method comprises the following steps:
Nanometer In2O3The preparation of/CNTs: by the CNTs ultrasonic disperse by nitration mixture oxidation in In2(SO4)3In solution, then super
Ammonia spirit is added dropwise with the speed of 1-3d/s under the conditions of sound, is stood after being added dropwise to complete for 24 hours, by reaction product filtering, dry postposition
It is calcined in Muffle furnace, obtains a nanometer In2O3/CNTs；
In2O3The preparation of/CNTs/ graphene: the nanometer In that will be prepared2O3/ CNTs is scattered in deionized water, and oxidation is added
Graphene, ultrasonic agitation after mixing, are heated to 50 DEG C, insulation reaction 1h, and ammonia spirit is added and adjusts pH to 10, reaction
2h is filtered after the reaction was completed, and after being washed with deionized to cleaning solution and being in neutrality, is taken out after dry 12h under the conditions of 60 DEG C,
It is placed in ball milling in planetary ball mill and obtains In2O3/ CNTs/ graphene.
9. a kind of preparation method of corrosion-resistant polyethylene communication tube according to claim 8, which is characterized in that the nanometer
In2O3The detailed process calcined in the preparation step of/CNTs are as follows: 400 DEG C of heat preservations are warming up to the speed of 2-3 DEG C/min first and are forged
After burning 0.5-1h, then 600 DEG C of heat preservations are warming up to the speed of 1-2 DEG C/min and calcine 1-2h, then with the speed liter of 2-5 DEG C/min
Temperature keeps the temperature 0.5h after being finally cooled to 200 DEG C with the speed of 5 DEG C/min to 750 DEG C of heat preservation 2h.
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Cited By (1)
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| CN113652019A (en) * | 2021-08-03 | 2021-11-16 | 扬州市兴隆塑料有限公司 | Anti-ultraviolet PE communication pipe |
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