CN206242464U - A kind of processing unit (plant) for improving ultra-high molecular weight polyethylene plasticizing and transportation performance - Google Patents
A kind of processing unit (plant) for improving ultra-high molecular weight polyethylene plasticizing and transportation performance Download PDFInfo
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- CN206242464U CN206242464U CN201621334213.9U CN201621334213U CN206242464U CN 206242464 U CN206242464 U CN 206242464U CN 201621334213 U CN201621334213 U CN 201621334213U CN 206242464 U CN206242464 U CN 206242464U
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- electromagnetic heater
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- machine barrel
- plant
- uhmwpe
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Abstract
The application is related to a kind of processing unit (plant) for improving ultra-high molecular weight polyethylene plasticizing and transportation performance, mainly include mixing arrangement and extruder, mixing arrangement mixes treated graphite material with HDPE, described extruder includes feeding cylinder, machine barrel, screw rod, heat-insulation layer, one section of electromagnetic heater, two sections of electromagnetic heater, three sections of electromagnetic heater, extruder die head, particle is cooled down and formation system and transmission system, screw rod is located inside machine barrel, there is heat-insulation layer outside machine barrel, outside heat-insulation layer from machine barrel charge door to extruder die head arrange one section of electromagnetic heater, two sections of electromagnetic heater, three sections of electromagnetic heater, feeding cylinder is installed at machine barrel charge door.Electromagnetic Heating can improve accuracy of temperature control, be also energy-efficient mode of heating, reduce energy consumption, reduces cost.
Description
Technical field
The present invention relates to the device that one kind improves ultra-high molecular weight polyethylene (UHMWPE) plasticizing and transportation performance, belong to
The field of UHMWPE machine-shapings.
Background technology
UHMWPE be viscosity-average molecular weight up to 150 ten thousand to 1 000 ten thousand polyethylene, its strand is very long, and in the same direction
Arrangement, and mutually wind.By strengthening the interaction between molecule, strand more long can more effectively by load transmission
To main chain.So special structure makes UHMWPE have excellent wearability, environmental stress crack resistance and ageing resistace, with
And impact strength it is high, self-lubricating property is good, do not adhere to, the low feature of surface free energy.Abroad, UHMWPE it is " to be referred to as
Surprised plastics ", are widely used in fields such as chemical industry, weaving, medical science, building, metallurgy, mining industry, water conservancy, coal, electric power.
The molecular weight of UHMWPE is big, melt viscosity is high, critical shear rate is low, coefficient of friction is small, forming temperature scope is narrow,
Oxidizable degraded, therefore processing and forming is difficult, its application is limited to a certain extent, therefore the processing and forming of research UHMWPE shows
Obtain particularly important.
The method that the processing and forming of current UHMWPE often has mainly has compression molding, extrusion molding, injection moulding and near
The specially-shaped method of a little year exploitations, these methods respectively have its advantage and disadvantage.Wherein the simple low cost of compression molding device, more passes through
Ji, but inequality is heated in its process, and also low production efficiency, labour intensity are big, and quality is unstable.For extrusion molding
And injection moulding, efficiency and product quality aspect have different degrees of raising, Qin Jianhua etc. to invent a kind of UHMWPE tubing list
Screw extruder barrel former (publication number CN101117017A), improves production efficiency, but its stability need to be improved,
The high-voltage high-speed injector of Battenfeld companies of Germany such as Liu Yufeng, the injection molding process to UHMWPE is ground
Study carefully, the more excellent product of performance is produced by reducing nozzle diameter and being equipped with suitable rotating speed, its equipment has the disadvantage power
It is small, easily degraded under high shear forces.Extruding forming method is commonly the molten of helical screw agitator and the heating of non-essential resistance heating collar
Melt means.How to realize that uniform high-efficiency is plastified, and overcoming its self-lubricating property to realize that stabilization conveying turns into needs what is solved to ask
Topic.
The present invention will solve the problems, such as that UHMWPE high viscositys are difficult homogenous plasticized, while will also overcome conveying friction hypodynamic
Problem, proposes the solution that apparatus and method are combined, and the field of UHMWPE plasticizings and conveying is needed for different manufacture fields
Close.
The content of the invention
The present invention proposes the processing unit (plant) of a kind of improvement UHMWPE plasticizings and transportation performance.With surface-treated graphite material
Material prepares high density polyethylene (HDPE) (HDPE) master batch, and with UHMWPE blends adds plasticizing extrusion equipment, and electricity is set outside equipment
Magnetic heater, machine barrel and graphite material are in electromagnetic field, are generated heat and as heat transfer medium under current vortex effect, by heat
It is uniform to supply to pass to UHMWPE, meanwhile, the addition of graphite material weakens the self-lubricating property of UHMWPE, improves material and machine barrel
Frictional force, screw rod transmission ability improve.The method extends to the various techniques for needing plasticizing efficient to UHMWPE and conveying
In equipment.
To achieve these goals, the present invention takes following technical scheme：Operating procedure is as follows：The first step, by graphite material
Material nitric acid treatment, then with alcohol washes and after drying with coupling agent blending and stirring and be put into high speed dispersor, mix it
Close uniform, wherein the adding proportion of graphite material is 50%~98%；Second step, the blend that step one is obtained with HDPE by
Certain proportion (such as 1:1~1:3 ratio) be added to blending extrusion in double screw extruder, after granulation obtain graphite material/
HDPE master batches；3rd step, by above-mentioned master batch and UHMWPE (optional ratio be 1%~20%) uniform stirring in certain proportion
Be put into extruder barrel after mixing, extruder barrel uses electromagnetic heating system, under Electromagnetic Heating effect, machine barrel, screw rod and
Graphite material in material is while heat, heat, the screw rod shearing heat of the dispersed graphite material therein of UHMWPE acquisitions
And machine barrel and the heat of screw rod transmission, the graphite material being dispersed in matrix UHMWPE compensate for that mass-and heat-transfer is not enough to be lacked
Point, also acts as the effect of increase frictional resistance, i.e., the driving force that melt block is fed forward becomes big.
Mass fractions of the graphite material/HDPE in UHMWPE is no more than 30%, and graphite material content is higher, in same electricity
Under the conditions of magnetic external action, the heat of generation is bigger, and matrix gets over easy movement, especially, Graphene or graphitized carbon fibre
Addition be favorably improved processed finished products overall mechanical properties and electric conductivity, reach multiple effect.
The method heated using high-frequency electromagnetic carries out heating melting to powder, replaces traditional resistance heating circle heating, electricity
Magnetic heating frequency is preferably matched with the resonant frequency of graphite material, and the heating efficiency for being favorably improved graphite material is improved, and is had
Help improve the bond strength of graphite material and matrix material.
Graphite material can also be other conductive materials such as aluminium powder, and effect is that electric whirlpool can be produced under action of alternating magnetic field
Flow into and heat, be dispersed in achievable efficient uniform heating in UHMWPE.
The present invention proposes the processing unit (plant) of a kind of improvement UHMWPE plasticizings and transportation performance, mainly includes mixing arrangement and squeezes
Go out machine, mixing arrangement mixes treated graphite material with HDPE, described extruder includes feeding cylinder, machine barrel, screw rod, insulation
Layer, one section of electromagnetic heater, two sections of electromagnetic heater, three sections of electromagnetic heater, extruder die head, particle cooling and into
Type system and transmission system, screw rod are located inside machine barrel, have heat-insulation layer outside machine barrel, outside heat-insulation layer from machine barrel charge door to extrusion
One section of electromagnetic heater of machine die head arrangement, two sections of electromagnetic heater, three sections of electromagnetic heater, install at machine barrel charge door
After thering is feeding cylinder, transmission system to control the rotation of screw rod, treated graphite material to plastify uniform extruded machine die head with HDPE
Granulate obtaining master batch by particle cooling and formation system again.After master batch mixes in proportion with UHMWPE according to performance requirement
It is extruded to be machined to required section bar.Shape extrusion extruder includes that feeding cylinder, machine barrel, screw rod, heat-insulation layer, electromagnetism add
One section of thermal, two sections of electromagnetic heater, three sections of electromagnetic heater, extruder die head, sections shaping cooling system and control
System processed, due to there is being mixed into for master batch, UHMWPE increases with the mixing material of master batch with the coefficient of friction of the internal diameter of feeding section machine barrel
Greatly, extrusion performance is improved, according to one section of electromagnetic heater of processing temperature requirement design regulation, the regulation Electromagnetic Heating of UHMWPE
The temperature of two sections of device and three sections of electromagnetic heater of regulation, extrudes, through type after the full and uniform melting of mixture from extrusion neck ring mold
Material sizing cooling system obtains required product.
A kind of improvement UHMWPE plasticizings of the present invention and the processing unit (plant) of transportation performance, the method heated using high-frequency electromagnetic
Suitable for the heating of other polymers processing, such as injection, rotational moulding, die casting.Electromagnetic Heating can improve accuracy of temperature control, be also high
The mode of heating of energy-conservation is imitated, reduces energy consumption, reduces cost.
A kind of improvement UHMWPE plasticizings of the present invention and the processing unit (plant) of transportation performance, wherein the graphite material for using can be
The average diameter of graphite powder, graphite flake, Graphene or graphitized carbon fibre, wherein graphite powder between 500nm-1mm, graphitization
Between 0.01mm-3mm, size distribution is no more than 50% to the average length of carbon fiber, and the control to test-material yardstick helps to carry
The coefficient of friction of matrix material melt high, yardstick is bigger, and coefficient of friction is bigger, and electromagnetic action thermogenic effects are more obvious.
A kind of improvement UHMWPE plasticizings of the present invention and the processing unit (plant) of transportation performance, wherein the preferred silane of the coupling agent for using
Coupling agent.
From above technical scheme, the present invention has the following advantages that compared with prior art：
1. by the use of graphite material/HDPE as modified master batch, UHMWPE extrusions are added, possess good under electromagnetic action
Good compatibility, many master batches are good heat emitting mediums as thermal source, for UHMWPE provides dispersed heat, by master batch
Neighbouring UHMWPE fusings.
2. the addition of graphite material or other metallic particles so that matrix material is improved with the coefficient of friction of machine barrel, is promoted
The raising of conveying capacity under screw extruding.
3. the addition of graphite material, can improve the conductive characteristic of matrix material, for needing the occasions such as electrostatic screen.
4. when graphite material uses Graphene, graphitized carbon fibre, the mechanical property after matrix material shaping will be lifted.
Brief description of the drawings
Fig. 1 is the flow process chart of the processing unit (plant) of a kind of improvement UHMWPE plasticizings of the present invention and transportation performance.
Fig. 2 is the device extrusion process equipment sketch of a kind of improvement UHMWPE plasticizings of the present invention and transportation performance.
In figure：1- feeding cylinders；2- machine barrels；3- heat-insulation layers；One section of 4- electromagnetic heaters；Two sections of 5- electromagnetic heaters；
Three sections of 6- electromagnetic heaters；7- extruder die heads；8- screw rods；9- motor cabinets；10- shaft couplings；11- sleeves；12- thrust axis
Hold；13- axle sleeves.
Specific embodiment
A kind of improvement UHMWPE plasticizings of the present invention and the processing unit (plant) of transportation performance, as shown in figure 1, for batch mixing prepares stream
Journey.
The first step, by graphite material nitric acid treatment, then with alcohol washes and after drying with coupling agent blending and stirring simultaneously
Add in high speed dispersor, be well mixed it, wherein the adding proportion of graphite material is 50%；Second step, step one is obtained
The blend for arriving is with HDPE with 1:1 ratio is added to blending extrusion in double screw extruder, after granulation obtain graphite material/
HDPE master batches；3rd step, blended powder is obtained after above-mentioned master batch and UHMWPE are mixed with 8% ratio uniform stirring.This hair
Bright device mainly includes mixing arrangement and extruder, and mixing arrangement mixes treated graphite material with HDPE.Described squeezes
Going out machine includes feeding cylinder 1, machine barrel 2, screw rod 8, heat-insulation layer 3, one section 4 of electromagnetic heater, two section 5 of electromagnetic heater, electromagnetism
Three section 6 of heater, the cooling of extruder die head 7, particle and formation system and transmission system, show that part constitutes, spiral shell in Fig. 2
Bar 8 is located inside machine barrel 2, has heat-insulation layer 3 outside machine barrel 2, electricity of being arranged from the charge door of machine barrel 2 to extruder die head 7 outside heat-insulation layer 3
One section 4 of magnetic heater, two section 5 of electromagnetic heater, three section 6 of electromagnetic heater, feeding cylinder is provided with machine barrel charge door
1, transmission system controls the rotation of screw rod 8, also shaft coupling 10, sleeve 11, the thrust bearing 12, axle of the correlation of screw rod 8 shown in Fig. 2
Cooled down by particle again after set 13 and motor cabinet 9, treated graphite material and the uniform extruded machine die head 7 of HDPE plasticizings and into
Type system granulate obtaining master batch.Needed for master batch is machined to after being mixed in proportion according to performance requirement with UHMWPE through extrusion
Section bar.Shape extrusion extruder includes that feeding cylinder, machine barrel, screw rod, heat-insulation layer, one section of electromagnetic heater, Electromagnetic Heating are filled
Put two sections, three sections of electromagnetic heater, extruder die head, sections shaping cooling system and control system, due to there is the mixed of master batch
Enter, UHMWPE is improved with the mixing material of master batch and the coefficient of friction increase of the internal diameter of feeding section machine barrel, extrusion performance, according to
The processing temperature requirement design of UHMWPE adjusts one section of electromagnetic heater, two sections of electromagnetic heater of regulation and regulation electromagnetism and adds
The temperature that three sections of thermal, is extruded after the full and uniform melting of mixture from extrusion neck ring mold, and institute is obtained through sections shaping cooling system
The product for needing.
The outer surface of master batch can be fabricated to the structure with rib, or master batch entered before UHMWPE is mixed into by matte roll
Row rolling so that the outer surface of master batch is coarse, when being plastified in an extruder after master batch mixes with UHMWPE, mixed material and machine
The frictional force of cylinder is bigger, can further increase extrusion capacity.
A kind of improvement UHMWPE plasticizings of the present invention and the processing unit (plant) of transportation performance, described extruder are squeezed from twin-screw
Go out machine.
Claims (6)
1. a kind of improvement ultra-high molecular weight polyethylene plastifies the processing unit (plant) with transportation performance, it is characterised in that：It is main to include mixing
Attach together and put and extruder, mixing arrangement mixes treated graphite material with HDPE, described extruder includes feeding cylinder, machine
Cylinder, screw rod, heat-insulation layer, one section of electromagnetic heater, two sections of electromagnetic heater, three sections of electromagnetic heater, extruder die head,
Particle is cooled down and formation system and transmission system, and screw rod is located inside machine barrel, has heat-insulation layer outside machine barrel, from machine barrel outside heat-insulation layer
Charge door to extruder die head arrangement one section of electromagnetic heater, two sections of electromagnetic heater, three sections of electromagnetic heater, machine barrel
Feeding cylinder is installed, transmission system controls the rotation of screw rod, treated graphite material and the uniform warp of HDPE plasticizings at charge door
Granulate obtaining master batch by particle cooling and formation system again after extruder die head；Master batch will according to performance with UHMWPE
After asking mixing in proportion required section bar is machined to through extrusion；Shape extrusion includes feeding cylinder, machine barrel, spiral shell with extruder
Bar, heat-insulation layer, one section of electromagnetic heater, two sections of electromagnetic heater, three sections of electromagnetic heater, extruder die head, section bar
Sizing cooling system and control system, due to the mixing material and feeding section machine barrel that have being mixed into for master batch, UHMWPE and master batch
The coefficient of friction increase of internal diameter, extrusion performance is improved, according to the processing temperature requirement design regulation electromagnetic heater of UHMWPE
One section, regulation two sections of electromagnetic heater and regulation three sections of electromagnetic heater temperature, after the full and uniform melting of mixture from
Extrusion neck ring mold is extruded, and required product is obtained through sections shaping cooling system.
2. a kind of improvement ultra-high molecular weight polyethylene according to claim 1 plastifies the processing unit (plant) with transportation performance, its
It is characterised by：The graphite material of use is graphite powder, graphite flake, Graphene or graphitized carbon fibre.
3. a kind of improvement ultra-high molecular weight polyethylene according to claim 2 plastifies the processing unit (plant) with transportation performance, its
It is characterised by：The average diameter of graphite powder between 500nm-1mm, the average length of graphitized carbon fibre 0.01mm-3mm it
Between.
4. a kind of improvement ultra-high molecular weight polyethylene according to claim 1 plastifies the processing unit (plant) with transportation performance, its
It is characterised by：The preferred silane coupler of coupling agent.
5. a kind of improvement ultra-high molecular weight polyethylene according to claim 1 plastifies the processing unit (plant) with transportation performance, its
It is characterised by：Graphite material is aluminium powder.
6. a kind of improvement ultra-high molecular weight polyethylene according to claim 1 plastifies the processing unit (plant) with transportation performance, its
It is characterised by：The outer surface of master batch is fabricated to the structure with rib, or master batch was carried out before UHMWPE is mixed into by matte roll
Rolling so that the outer surface of master batch is coarse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334213.9U CN206242464U (en) | 2016-12-07 | 2016-12-07 | A kind of processing unit (plant) for improving ultra-high molecular weight polyethylene plasticizing and transportation performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334213.9U CN206242464U (en) | 2016-12-07 | 2016-12-07 | A kind of processing unit (plant) for improving ultra-high molecular weight polyethylene plasticizing and transportation performance |
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| Publication Number | Publication Date |
|---|---|
| CN206242464U true CN206242464U (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621334213.9U Expired - Fee Related CN206242464U (en) | 2016-12-07 | 2016-12-07 | A kind of processing unit (plant) for improving ultra-high molecular weight polyethylene plasticizing and transportation performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476241A (en) * | 2016-12-07 | 2017-03-08 | 北京化工大学 | A kind of method and device for improving ultra-high molecular weight polyethylene plasticizing and transportation performance |
-
2016
- 2016-12-07 CN CN201621334213.9U patent/CN206242464U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476241A (en) * | 2016-12-07 | 2017-03-08 | 北京化工大学 | A kind of method and device for improving ultra-high molecular weight polyethylene plasticizing and transportation performance |
| CN106476241B (en) * | 2016-12-07 | 2019-05-07 | 北京化工大学 | A kind of method and device improving ultra-high molecular weight polyethylene plasticizing and transportation performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20191207 |