CN109016438A - A kind of PTC exothermic material mixed melting extrusion method - Google Patents
A kind of PTC exothermic material mixed melting extrusion method Download PDFInfo
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- CN109016438A CN109016438A CN201810885437.6A CN201810885437A CN109016438A CN 109016438 A CN109016438 A CN 109016438A CN 201810885437 A CN201810885437 A CN 201810885437A CN 109016438 A CN109016438 A CN 109016438A
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- China
- Prior art keywords
- extrusion device
- screw extrusion
- circulation pipe
- melting
- melt flow
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a kind of PTC exothermic material mixed melting extrusion methods, comprising the following steps: is put into disintegrating apparatus after weighing high molecular material masterbatch and modified additive according to the proportion and uniform hybrid solid powder is made；Uniform hybrid solid powder is put into the screw extrusion device of axis horizontal setting, by the uniform hybrid solid powder of screw extrusion device extrusion molten, melt flow stream mixture is made；Melting circulation pipe is provided with above screw extrusion device, the axis for melting circulation pipe is parallel with the axis of screw extrusion device, and the axis both ends of the melting circulation pipe are respectively communicated with the axis both ends of screw extrusion device；Melt flow stream mixture, which is sent into extrusion head, carries out extrusion operation, and excessive melt flow stream mixture circulates between melting circulation pipe and screw extrusion device.The present invention can equably mix each component in PTC high molecular material, and the product output speed of adjustable screw extruder.
Description
Technical field
The present invention relates to a kind of exothermic material technical field of producing, especially a kind of PTC exothermic material mixed melting
Extrusion method.
Background technique
There is PTC high molecular material expanded by heating to make the characteristic that resistance becomes larger, therefore the heating temperature of PTC high molecular material
Degree and resistance can achieve an equilibrium valve, to realize the function of self limiting temperature.PTC high molecular material is needed in processing
Certain coupling agent is added in high molecular material matrix；In addition, the actual life in order to ensure PTC high molecular material, resists
The additives such as oxidant, reinforcing agent, age resister also usually need to be dispersed in high molecular material matrix, this is just to material
The uniform mixing of middle each component proposes higher requirement.Screw extruder is the common device for processing PTC high molecular material,
Deficiency existing for conventional screw extruder is:
Screw rod in screw extruder is low-speed rotation, and prolonged operation is needed just microcomponent to be made to obtain uniformly
Dispersion；In addition, the rate of extrusion of screw extruder be usually it is constant, when downstream reception device need it is of short duration rest or
When failure, the material that can only often squeeze out screw extruder is accepted, when producing line to be generated is restarted again
It throws back in screw apparatus；On the one hand aforesaid operations are more troublesome, and the toxic or stimulation that may contain in PTC high molecular material
Property unwanted volatile for operator health also have certain negative effect.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of PTC exothermic material mixed melting extrusion method, energy
It is enough that each component in PTC high molecular material is equably mixed, and the product output of adjustable screw extruder
Rate.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of PTC exothermic material mixed melting extrusion method, comprising the following steps:
Step 1: first high molecular material masterbatch is put into after high molecular material masterbatch and modified additive are weighed according to the proportion
It is crushed in disintegrating apparatus, after high molecular material masterbatch crushes completely, modified additive is put into disintegrating apparatus, with height
Molecular material masterbatch powder, which is sufficiently mixed, is made uniform hybrid solid powder；
Step 2: uniform hybrid solid powder is put into the screw extrusion device of axis horizontal setting, pass through screw extruding
Melt flow stream mixture is made in the uniform hybrid solid powder of equipment extrusion molten；
Step 3: being provided with melting circulation pipe above screw extrusion device, the axis and screw extrusion device of circulation pipe are melted
Axis it is parallel, and the axis both ends of the melting circulation pipe are respectively communicated with the axis both ends of screw extrusion device；Melt flow stream
Mixture, which is sent into extrusion head, carries out extrusion operation, and the excessive melt flow stream mixture of screw extrusion device output is melting
It is circulated between circulation pipe and screw extrusion device.
As a further improvement of the above technical scheme, in step 1, high molecular material masterbatch leads in disintegrating apparatus
Cross helical blade chopping and grinding ball mill and carries out dual comminution process, and helical blade chopping and grinding ball be set to it is same
In the shaft being vertically arranged, helical blade chopping is set in the middle part of shaft, and grinding ball is set to shaft lower end, and in chopping and
Mill operation while constantly to material air-blowing, so that the material for being deposited on bottom is moved to upper layer and shredded and milled work
Industry.
As a further improvement of the above technical scheme, in being additionally provided in step 2, on the outside of screw extrusion device
Frequency induction heating apparatus heats the uniform hybrid solid powder in screw extrusion device, to accelerate uniform hybrid solid
The melting of powder.
As a further improvement of the above technical scheme, in step 3, the connection of screw extrusion device and extrusion head
Be provided with aperture valve on pipe, melt and be also equipped with aperture valve on circulation pipe: when normal work, the aperture valve melted on circulation pipe is opened
Spend small, the aperture valve opening in the connecting tube of screw extrusion device and extrusion head is big, and most of melt flow stream mixture enters
In extrusion head, fraction melt flow stream mixture enters melting circulation pipe, returns again in screw extrusion device；Extrusion head stops
When machine, the aperture valve standard-sized sheet on circulation pipe is melted, the aperture valve in the connecting tube of screw extrusion device and extrusion head closes
It closes, melt flow stream mixture circulates between melting circulation pipe and screw extrusion device.
As a further improvement of the above technical scheme, it in step 3, melts and is vertically arranged bubble discharge on circulation pipe
Pipe puts aside the bubble in melt flow stream mixture in bubble discharge pipe, and observes the gas put aside in bubble discharge pipe in real time
The upper end of bubble discharge pipe is connected to atmosphere, bubble is discharged by bubble amount when bubble is soon full of bubble discharge pipe, then after
The upper end of continuous closed air bubbles discharge pipe.
Compared with prior art, the beneficial effects of the present invention are:
A kind of PTC exothermic material mixed melting extrusion method provided by the present invention, can be to each group in PTC high molecular material
Divide and equably mixed, and the product output speed of adjustable screw extruder, when reception device needs in downstream are short
When pause has a rest or breaks down, screw extruder can continue to work normally, and accept screw rod without operator and squeeze
The material that equipment squeezes out out, to ensure the health and safety of operator's production operation.
Specific embodiment
Carry out the technology contents that present invention be described in more detail below in conjunction with specific embodiments.
A kind of PTC exothermic material mixed melting extrusion method provided by the present embodiment, comprising the following steps:
Step 1: first high molecular material masterbatch is put into after high molecular material masterbatch and modified additive are weighed according to the proportion
It is crushed in disintegrating apparatus, after high molecular material masterbatch crushes completely, modified additive is put into disintegrating apparatus, with height
Molecular material masterbatch powder, which is sufficiently mixed, is made uniform hybrid solid powder；
High molecular material masterbatch mills by helical blade chopping and grinding ball in disintegrating apparatus and carries out dual comminution process, and
Helical blade chopping and grinding ball are set in the same shaft being vertically arranged, and helical blade chopping is set in the middle part of shaft,
Grinding ball is set to shaft lower end, and makes to be deposited on bottom constantly to material air-blowing while shredding and milling operation
Material can move to upper layer and be shredded and milled operation.
Step 2: uniform hybrid solid powder is put into the screw extrusion device of axis horizontal setting, pass through screw rod
Melt flow stream mixture is made in the uniform hybrid solid powder of extrusion equipment extrusion molten；
Intermediate frequency induction heating device is additionally provided on the outside of screw extrusion device, to the uniform hybrid solid in screw extrusion device
Powder is heated, to accelerate the melting of uniform hybrid solid powder.
Step 3: being provided with melting circulation pipe above screw extrusion device, the axis and screw extruding of circulation pipe are melted
The axis of equipment is parallel, and the axis both ends of the melting circulation pipe are respectively communicated with the axis both ends of screw extrusion device；Melting
Fluid mixture, which is sent into extrusion head, carries out extrusion operation, and the excessive melt flow stream mixture of screw extrusion device output exists
It is circulated between melting circulation pipe and screw extrusion device；
It is provided with aperture valve in the connecting tube of screw extrusion device and extrusion head, melts and is also equipped with aperture valve on circulation pipe:
When normal work, the aperture valve opening melted on circulation pipe is small, the aperture in the connecting tube of screw extrusion device and extrusion head
Valve opening is big, and most of melt flow stream mixture enters in extrusion head, and fraction melt flow stream mixture enters melting circulation
Pipe, returns again in screw extrusion device；When extrusion head is shut down, the aperture valve standard-sized sheet on circulation pipe, screw extruding are melted
Aperture valve in equipment and the connecting tube of extrusion head is closed, and melt flow stream mixture is in melting circulation pipe and screw extrusion device
Between circulate；
It is vertically arranged bubble discharge pipe on melting circulation pipe, the bubble in melt flow stream mixture is put aside in bubble discharge pipe
In, and the bubbles volume put aside in bubble discharge pipe is observed in real time, when bubble is soon full of bubble discharge pipe, by bubble discharge pipe
Upper end be connected to atmosphere, bubble is discharged, the upper end of closed air bubbles discharge pipe is then proceeded to.
Better embodiment of the invention is illustrated above, certainly, the present invention can also using with it is above-mentioned
The different form of embodiment, those skilled in the art are made equivalent on the premise of without prejudice to spirit of the invention
Transformation or corresponding change, all should belong in protection scope of the present invention.
Claims (5)
1. a kind of PTC exothermic material mixed melting extrusion method, which comprises the following steps:
Step 1: first high molecular material masterbatch is put into after high molecular material masterbatch and modified additive are weighed according to the proportion
It is crushed in disintegrating apparatus, after high molecular material masterbatch crushes completely, modified additive is put into disintegrating apparatus, with height
Molecular material masterbatch powder, which is sufficiently mixed, is made uniform hybrid solid powder；
Step 2: uniform hybrid solid powder is put into the screw extrusion device of axis horizontal setting, pass through screw extruding
Melt flow stream mixture is made in the uniform hybrid solid powder of equipment extrusion molten；
Step 3: being provided with melting circulation pipe above screw extrusion device, the axis and screw extrusion device of circulation pipe are melted
Axis it is parallel, and the axis both ends of the melting circulation pipe are respectively communicated with the axis both ends of screw extrusion device；Melt flow stream
Mixture, which is sent into extrusion head, carries out extrusion operation, and the excessive melt flow stream mixture of screw extrusion device output is melting
It is circulated between circulation pipe and screw extrusion device.
2. a kind of PTC exothermic material mixed melting extrusion method according to claim 1, it is characterised in that: in step 1
In, high molecular material masterbatch mills by helical blade chopping and grinding ball in disintegrating apparatus and carries out dual comminution process, and
Helical blade chopping and grinding ball are set in the same shaft being vertically arranged, and helical blade chopping is set in the middle part of shaft,
Grinding ball is set to shaft lower end, and makes to be deposited on bottom constantly to material air-blowing while shredding and milling operation
Material can move to upper layer and be shredded and milled operation.
3. a kind of PTC exothermic material mixed melting extrusion method according to claim 1, it is characterised in that: in step 2
In, intermediate frequency induction heating device is additionally provided on the outside of screw extrusion device, to the uniform hybrid solid in screw extrusion device
Powder is heated, to accelerate the melting of uniform hybrid solid powder.
4. a kind of PTC exothermic material mixed melting extrusion method according to claim 1, it is characterised in that: in step 3
In, it is provided with aperture valve in the connecting tube of screw extrusion device and extrusion head, melts and is also equipped with aperture valve on circulation pipe: just
Often when work, the aperture valve opening melted on circulation pipe is small, the aperture valve in the connecting tube of screw extrusion device and extrusion head
Aperture is big, and most of melt flow stream mixture enters in extrusion head, and fraction melt flow stream mixture enters melting circulation pipe,
It returns again in screw extrusion device；When extrusion head is shut down, the aperture valve standard-sized sheet on circulation pipe, screw extrusion device are melted
It is closed with the aperture valve in the connecting tube of extrusion head, melt flow stream mixture is between melting circulation pipe and screw extrusion device
It circulates.
5. a kind of PTC exothermic material mixed melting extrusion method according to claim 4, it is characterised in that: in step 3
In, it melts and is vertically arranged bubble discharge pipe on circulation pipe, the bubble in melt flow stream mixture is put aside in bubble discharge pipe,
And the bubbles volume put aside in bubble discharge pipe is observed in real time, when bubble is soon full of bubble discharge pipe, by bubble discharge pipe
Upper end is connected to atmosphere, and bubble is discharged, the upper end of closed air bubbles discharge pipe is then proceeded to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810885437.6A CN109016438A (en) | 2018-08-06 | 2018-08-06 | A kind of PTC exothermic material mixed melting extrusion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810885437.6A CN109016438A (en) | 2018-08-06 | 2018-08-06 | A kind of PTC exothermic material mixed melting extrusion method |
Publications (1)
| Publication Number | Publication Date |
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| CN109016438A true CN109016438A (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810885437.6A Withdrawn CN109016438A (en) | 2018-08-06 | 2018-08-06 | A kind of PTC exothermic material mixed melting extrusion method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106346734A (en) * | 2016-08-30 | 2017-01-25 | 中国化学工业桂林工程有限公司 | Extruder and extrusion process and system thereof |
| CN206215303U (en) * | 2016-11-21 | 2017-06-06 | 山东津兰特种聚合物有限公司 | A kind of high tenacity material-pulverizing device |
| CN108099157A (en) * | 2016-11-24 | 2018-06-01 | 李福来 | A kind of series circulation flow model plastic extruder |
-
2018
- 2018-08-06 CN CN201810885437.6A patent/CN109016438A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106346734A (en) * | 2016-08-30 | 2017-01-25 | 中国化学工业桂林工程有限公司 | Extruder and extrusion process and system thereof |
| CN206215303U (en) * | 2016-11-21 | 2017-06-06 | 山东津兰特种聚合物有限公司 | A kind of high tenacity material-pulverizing device |
| CN108099157A (en) * | 2016-11-24 | 2018-06-01 | 李福来 | A kind of series circulation flow model plastic extruder |
Non-Patent Citations (1)
| Title |
|---|
| 魏刚等: "《塑料成型理论与技术基础》", 31 March 2013, 西南交通大学出版社 * |
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Application publication date: 20181218 |
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| WW01 | Invention patent application withdrawn after publication |