CN105869800B - PVC electric tubes and preparation method - Google Patents
PVC electric tubes and preparation method Download PDFInfo
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- CN105869800B CN105869800B CN201610395415.2A CN201610395415A CN105869800B CN 105869800 B CN105869800 B CN 105869800B CN 201610395415 A CN201610395415 A CN 201610395415A CN 105869800 B CN105869800 B CN 105869800B
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- clathrum
- layer
- internal layer
- pvc
- arm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
- H01B17/583—Grommets; Bushings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of PVC electric tubes, including protecting pipe and electro-magnetic screen layer, protecting pipe includes internal layer and outer layer, electro-magnetic screen layer is between internal layer and outer layer, internal layer is provided with clathrum, clathrum is formed by metal wire knitted, and clathrum is fixed on internal layer at inwall, and the reinforcement for penetrating clathrum is convexly equipped with the inwall of internal layer.The invention also discloses a kind of preparation method of PVC electric tubes, 1）, with metal wire knitted into latticed clathrum；2）, the graphite silk made of graphene be woven into it is latticed；3）, the clathrum obtained in step 1 is enclosed on mould rod, then PVC injection molding internal layers are used on mould rod；4）, by the finished product obtained in step 2 be coated on complete step 3 internal layer lateral wall on；5）, the finished product obtained in step 4 is molded on the outside of it is mixed into the PVC melts of color masterbatch and forms outer layer.The electric tube can not only be long-acting holding shielding electromagnetism effect, while there is good shock resistance.
Description
Technical field
The present invention relates to electrical casing pipe technical field, more specifically, it relates to a kind of PVC electric tubes and preparation side
Method.
Background technology
PVC electric tubes, hard PVC fire retardant insulating clod wash electrical casing pipe is often referred to, Main Ingredients and Appearance is polyvinyl chloride, adds it
His composition strengthens its fire resistance, compressive property, heat resistance, toughness and ductility etc., and adds the color masterbatch of different colours
To change its color, it is set to distinguish strong and weak electricity wiring in circuit installation with different colors.
At present, notification number is that CN104993433A Chinese patent discloses a kind of flame-retardant and anti-static UPVC electric tubes, it
Including:UPVC electric tubes basic unit, flexible anti-shock layer, the first antistatic layer and the second antistatic layer, described UPVC electric tube bases
The outer surface of layer is disposed with described flexible anti-shock layer and the first described antistatic layer, described UPVC electricity outward from interior
The inner surface setting of Gong Guan basic units has the second described antistatic layer, and described UPVC electric tubes basic unit includes following parts by weight
Raw material components:UPVC50-70 parts, butyl acrylate 20-40 parts, maleic acid anhydride polymers 10-30 parts, plasticized modifier
6-17 parts, crosslinking agent 5-10 parts, halogen-free flame retardants 3-5 parts and smoke suppressant 3-5 parts.Although said structure can bring certain resistance
Combustion, antistatic and other effects, but its overall structure is still in a tubular form, therefore electric tube is by its shock resistance energy during radial impact force
Power from its structure for it is still weaker, and cannot be solved to the pollution problem of electromagnetic radiation.
Notification number is that CN105374477A Chinese patent discloses a kind of electromagnetic shielding electric tube, and it includes fire-retardant electric power
Sheath tube layer and electro-magnetic screen layer, above-mentioned fire-retardant electric power sheath tube layer is basic unit, mainly maintains the basic performance of electric tube, and
Electro-magnetic screen layer is then one layer of material for possessing electromagnetic shielding of painting or external application in flame-retardant electric casing, and its main function is exactly
Weaken while the basic performance of fire-retardant electric power protecting pipe is kept and even mask electromagnetic radiation caused by electric wire or cable.
Although coating possesses the material of electromagnetic shielding in electric tube, make its shielding to electromagnetism that there is certain effect, electromagnetic screen
It is the simple inner or outer side for being coated in electric tube to cover material, therefore is easily come off in contact rubs, so as to play
Shield the effect of electromagnetism；And its overall structure is still in a tubular form, therefore electric tube is by its shock resistance energy during radial impact force
Power from its structure for it is still weaker.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of PVC electric tubes, the electric tube is not only
The effect of holding shielding electromagnetism that can be long-acting, while there is good shock resistance.
To achieve the above object, the invention provides following technical scheme：A kind of PVC electric tubes, including protecting pipe and electricity
Magnetic masking layer, the protecting pipe include internal layer and outer layer, and the electro-magnetic screen layer is between internal layer and outer layer, the internal layer
Provided with clathrum, the clathrum is formed by metal wire knitted, and the clathrum is fixed on internal layer at inwall, the internal layer
Inwall on be convexly equipped with the reinforcement for penetrating clathrum.
By using above-mentioned technical proposal, electro-magnetic screen layer is arranged on to the inside of protecting pipe, i.e., between internal layer and outer layer,
So it is possible to prevente effectively from because electric tube is with extraneous contact process, so as to wear away electro-magnetic screen layer, therefore being advantageous to prolong
The Use Limitation of long screen layer；Internal layer is wrapped in the clathrum formed by metal wire knitted in injection moulding process simultaneously, not only such as
This, also penetrate clathrum on the inwall of internal layer formed with reinforcement, so as to greatly improve electrician by structure
The structural strength of pipe, electric tube is set to possess lasting and good shock resistance.
The present invention is further arranged to：Electro-magnetic screen layer graphite silk made of graphene is worked out.
By using above-mentioned technical proposal, graphene not only has unique physical arrangement and excellent mechanics, electromagnetism
Performance, also with good microwave absorbing property, it has shielding of the characteristic of magnetic loss and electrical loss to electromagnetism concurrently and plays product
The effect of pole.
The present invention is further arranged to：The outer layer is made up of the PVC for being mixed with color masterbatch.
By using above-mentioned technical proposal, the PVC for being mixed with color masterbatch is set only for outer layer, therefore internal layer can need not add color
Mother, and be still able to reach the effect being distributed come the fulgurite that tells the men from the boys by the color of outer layer, advantageously reduce to color masterbatch
Usage amount, it need to only be mixed into outer layer.
The present invention is further arranged to：The both ends of the protecting pipe be respectively equipped with can snapping hook arm and buckle arm, the hook
The cross section of arm and buckle arm is in hook-shaped.
By using above-mentioned technical proposal, protecting pipe can realize the spelling of protecting pipe by the hook arm at both ends with buckle arm clasp joint
Connect, facilitate wiring personnel quickly to connect or disassemble protecting pipe.
The present invention is further arranged to：The hook arm and the inclined structure setting of buckle arm, the arm that hooks is towards protecting pipe
Buckle arm one end tilt, the buckle arm towards protecting pipe hook arm one end tilt.
By using above-mentioned technical proposal, when hooking arm with buckle arm fastening, hook arm can be made hook-shaped because mutually having with buckle arm
Strengthen stable connection under the traction of structure, so as to avoid electric tube from being axially disengaging.
The present invention is further arranged to：Barb is convexly equipped with the inside of the hook arm, the buckle arm, which is provided with, to be used to house barb
Hook and slot.
By using above-mentioned technical proposal, hook barb when arm fastens with buckle arm and buckle into hook and slot, so as to improve electric tube
Stable connection degree.
The present invention also provides a kind of preparation method of PVC electric tubes：
1）, with metal wire knitted into latticed clathrum；
2）, the graphite silk made of graphene be woven into it is latticed；
3）, the clathrum obtained in step 1 is enclosed on mould rod, then PVC injection molding internal layers are used on mould rod；
4）, by the finished product obtained in step 2 be coated on complete step 3 internal layer lateral wall on；
5）, the finished product obtained in step 4 is molded on the outside of it is mixed into the PVC melts of color masterbatch and forms outer layer.
By using above-mentioned technical proposal, by protecting pipe injection molding at twice, it can be arranged on electro-magnetic screen layer interior
Between layer and outer layer, so as to avoid producing the damage of outer bound pair electro-magnetic screen layer；And internal layer effectively wraps in injection moulding process
Clathrum is wrapped, so as to greatly improve the structural strength of electric tube.
The present invention is further arranged to：Mould rod in step 3 is provided with groove along its length on its lateral wall.
By using above-mentioned technical proposal, set groove that internal layer can be allowed to have part injection melt to ooze in injection moulding process
Flowed into through clathrum in groove, so as to effectively form reinforcement.
The present invention is further arranged to：The injection molding under vacuum state of outer layer described in step 5.
By using above-mentioned technical proposal, joint of the outer layer with internal layer in injection moulding process can be avoided to produce bubble or sky
Hole, be advantageous to improve the degree of engagement of outer layer and internal layer.
The present invention is further arranged to：Outer layer described in step 5 is in injection after rotation sizing under vacuum state.
By using above-mentioned technical proposal, rotated when not solidified after outer injection under vacuum state, enable outer layer
Uniformly it is wrapped on internal layer, the wall thickness of electric tube is kept uniform.
In summary, the invention has the advantages that：Electro-magnetic screen layer is arranged at the extraneous shield that can not be touched
In sleeve pipe, so as to avoid the failure of electro-magnetic screen layer, effectively for the pollution problem of electromagnetic radiation it can be enable to alleviate；
By increasing clathrum and reinforcement, so as to improve the structural strength of electric tube, electric tube is secretly buried or external application all
The circuit in it can effectively be protected.
Brief description of the drawings
Fig. 1 is the cross-sectional view of electric tube；
Fig. 2 is the dimensional structure diagram of electric tube；
Fig. 3 is A portions enlarged diagram in Fig. 2.
Reference：1st, protecting pipe；11st, internal layer；111st, reinforcement；12nd, outer layer；13rd, electro-magnetic screen layer；14th, clathrum；
15th, arm is hooked；151st, barb；16th, buckle arm；161st, hook and slot.
Embodiment
With reference to the accompanying drawings and examples, the present invention is described in more detail.Wherein identical parts identical
Reference represents.It should be noted that the word "front", "rear", "left", "right", the "up" and "down" that are used below in description
The direction in accompanying drawing is referred to, word " bottom surface " and " top surface ", " interior " and " outer " are referred respectively to towards or away from particular elements
The direction of geometric center.
A kind of PVC electric tubes, shown in reference picture 1, visually go out to include protecting pipe 1 and electromagnetism in the cross section of electric tube
Screen layer 13, protecting pipe 1 include internal layer 11 and outer layer 12, and electro-magnetic screen layer 13 is between internal layer 11 and outer layer 12, internal layer
11 are provided with clathrum 14, and clathrum 14 is formed by metal wire knitted（Not depending on going out in figure）, it is close that clathrum 14 is fixed on internal layer 11
At inwall, because clathrum 14 is formed by metal wire knitted, therefore gap is left between each wire, when the note of internal layer 11
Mould when on clathrum 14, have part PVC solution and penetrate into gap, therefore the application is to make clathrum 14 be wrapped up by internal layer 11
Firmly, and close to the inwall of internal layer 11, and to be more easy to show internal layer 11 and clathrum 14 in Fig. 1, so as to solid with clathrum 14
It is slightly different to be scheduled on description of the internal layer 11 at inwall.
Shown in reference picture 1, reinforcement 111 is also convexly equipped with the inwall of internal layer 11, passes through clathrum 14 and reinforcement 111
Structure, the structural strength of electric tube in itself is greatly improved, electric tube is possessed lasting and good shock resistance.Secondly
Reinforcement 111 can strengthen electric tube and the contact area of the electric wire in it, or the gap filled up between power down line, make electrician
Enrich inside pipe, so that electric tube is integrally sturdy, be advantageous to improve structural strength, electric tube is secretly buried or external application all
The electric wire in it can effectively be protected.
In addition, electro-magnetic screen layer 13 can be worked out at the graphite silk made of graphene, carbon-based material is directed to electricity
Magnetic screen has had quite extensive research with absorbing, and as a kind of new carbon graphene, becomes new effective
Electromagnetic shielding or microwave absorbing material, meet requirement of the absorbing material to " thin, light, wide, strong ", have magnetic loss and electrical loss concurrently
Shielding of the characteristic to electromagnetism can play a positive role.The electro-magnetic screen layer 13 is arranged on to the inside of protecting pipe 1 simultaneously,
I.e. between internal layer 11 and outer layer 12, so it is possible to prevente effectively from because electric tube with extraneous contact process, so as to wear power down
Magnetic masking layer 13, therefore be advantageous to extend the Use Limitation of screen layer, and can effectively be directed to the pollution problem of electromagnetic radiation
It is set to alleviate.
Shown in reference picture 1, outer layer 12 and internal layer 11 are split settings, therefore in the injection molding process of outer layer 12, can be adopted
It is made of the PVC for being mixed with color masterbatch, and the injection raw material of internal layer 11 can need not add color masterbatch, so not only be still able to reach logical
The color of outer layer 12 is crossed come the effect for the fulgurite distribution that tells the men from the boys, but also is more beneficial for reducing the usage amount to color masterbatch.
Shown in reference picture 2, the both ends of protecting pipe 1 be respectively equipped with can snapping hook arm 15 and buckle arm 16, substantially hook arm 15
It is same structure with buckle arm 16, and inclined structure setting, shown in reference picture 3, hook buckle arm 16 of the arm 15 towards protecting pipe 1
One end tilts, and buckle arm 16 tilts towards one end of hook arm 15 of protecting pipe 1（Not shown in figure）, distinguish and be to be separately positioned on sheath
The both ends of pipe 1, for splicing to realize the connection of electric tube；It is that hooking the inner side of arm 15 is convexly equipped with barb in addition with difference
151, buckle arm 16 is provided with the hook and slot 161 for being used for housing barb 151, so that enhancing hooks arm 15 and buckle arm in the splicing of protecting pipe 1
16 splicing firmness.
The preparation method and step of the PVC electric tubes are as follows：
1）, with metal wire knitted into latticed clathrum 14（Need herein, can according to shielding object difference,
A little adjustment are done in the selection that wire can be directed to, such as the diamagnetic material such as copper and aluminium can be as the preferred material of electrostatic shielding body
Material, and the very high ferromagnetic material of the magnetic conductivity such as steel can be as the preferred material of magnetic shield, therefore the present invention can strengthen electricity
Magnetic Shielding Effectiveness, or the effect of increase antistatic）, certain gap is left between each wire.
2）, the graphite silk made of graphene be woven into it is latticed（Need herein, because graphene is in the world most
Thin and most hard material, thus its manufactured graphite silk can also be woven into it is latticed）, one is left between each graphite silk
Fixed gap.
3）, the clathrum 14 obtained in step 1 is enclosed on mould rod, and mould rod on its lateral wall along its length
Direction is provided with groove, then PVC injection moldings internal layer 11 is used on mould rod, and PVC injection molding materials can use material of the prior art
Material matches, can also realize in documents；And PVC injections melt can be through between each wire in the injection moulding process
Gap so as to penetrating into the groove of mould rod, you can shaping internal layer 11 and reinforcement 111 at one stroke, while also by clathrum
14 are fixed in internal layer 11, so as to avoid coming off for clathrum 14.
4）, by the finished product obtained in step 2 be coated on complete step 3 the lateral wall of internal layer 11 on.
5）, the finished product obtained in step 4 is molded on the outside of it is mixed into the PVC melts of color masterbatch and forms outer layer 12, color masterbatch
Colour system can be selected as needed, and is preferably positioned in the injection moulding process in outside under vacuum state, and outer layer 12 can be avoided to note
Joint during modeling with internal layer 11 produces bubble or cavity, is advantageous to improve the degree of engagement of outer layer 12 and internal layer 11；And
And sizing is rotated under vacuum state when not solidified after outer layer 12 completes injection, outer layer 12 is uniformly wrapped in internal layer
On 11, the wall thickness of electric tube is set to keep uniform.
Because electro-magnetic screen layer 13 leaves certain gap in step 5, therefore melt can be from injection moulding process for outer layer 12
The gap is penetrated on the lateral wall of internal layer 11, so as to be bonded, is advantageous to improve the connectivity and one of the outer layer 12 of internal layer 11
Property, so as to effectively avoid internal layer 11 and outer layer 12 from separating；Electro-magnetic screen layer 13 is set to be arranged between internal layer 11 and outer layer 12 simultaneously,
So as to avoid producing the damage of outer bound pair electro-magnetic screen layer 13, be advantageous to extend electromagnetic shielding timeliness.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of PVC electric tubes, including protecting pipe (1) and electro-magnetic screen layer (13), it is characterized in that：The protecting pipe (1) includes
There are internal layer (11) and outer layer (12), the electro-magnetic screen layer (13) is located between internal layer (11) and outer layer (12), the internal layer
(11) clathrum (14) is provided with, the clathrum (14) is formed by metal wire knitted, and the clathrum (14) is fixed on internal layer
(11) at inwall, the reinforcement (111) for penetrating clathrum (14) is convexly equipped with the inwall of the internal layer (11)；The shield
The both ends of sleeve pipe (1) be respectively equipped with can snapping hook arm (15) and buckle arm (16), it is described hook arm (15) and buckle arm (16) it is transversal
Face is in hook-shaped, the hook arm (15) and the inclined structure setting of buckle arm (16), and the arm (15) that hooks is towards protecting pipe (1)
Buckle arm (16) one end tilts, and the buckle arm (16) tilts towards hook arm (15) one end of protecting pipe (1).
2. PVC electric tubes according to claim 1, it is characterized in that：The electro-magnetic screen layer (13) is made of graphene
Graphite silk is worked out.
3. PVC electric tubes according to claim 1 or 2, it is characterized in that：The outer layer (12) is by being mixed with the PVC systems of color masterbatch
Into.
4. PVC electric tubes according to claim 1, it is characterized in that：Barb (151) is convexly equipped with the inside of the hook arm (15),
The buckle arm (16) is provided with the hook and slot (161) for being used for housing barb (151).
5. the preparation method of the PVC electric tubes in claim 1-4 described in any one, it is characterized in that：1）, use metal wire knitted
Into latticed clathrum (14)；
2）, the graphite silk made of graphene be woven into it is latticed；
3）, the clathrum obtained in step 1 (14) is enclosed on mould rod, then PVC injection molding internal layers are used on mould rod
(11)；
4）, by the finished product obtained in step 2 be coated on complete step 3 internal layer (11) lateral wall on；
5）, the finished product obtained in step 4 is molded on the outside of it is mixed into the PVC melts of color masterbatch and forms outer layer (12).
6. the preparation method of PVC electric tubes according to claim 5, it is characterized in that：By the mould rod in step 3 outside it
Groove is provided with side wall along its length.
7. the preparation method of PVC electric tubes according to claim 5, it is characterized in that：Outer layer described in step 5 (12) is in true
Injection molding under dummy status.
8. the preparation method of PVC electric tubes according to claim 7, it is characterized in that：Outer layer described in step 5 (12) is being noted
Modeling is after rotation sizing under vacuum state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395415.2A CN105869800B (en) | 2016-06-06 | 2016-06-06 | PVC electric tubes and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395415.2A CN105869800B (en) | 2016-06-06 | 2016-06-06 | PVC electric tubes and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105869800A CN105869800A (en) | 2016-08-17 |
| CN105869800B true CN105869800B (en) | 2017-11-28 |
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ID=56675826
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610395415.2A Active CN105869800B (en) | 2016-06-06 | 2016-06-06 | PVC electric tubes and preparation method |
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| CN (1) | CN105869800B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314167B (en) * | 2017-08-22 | 2019-03-12 | 哈尔滨东安橡胶有限责任公司 | The shellproof rubber hose of armouring and production method |
| CN109859904B (en) * | 2019-03-29 | 2021-09-14 | 江苏神马电力股份有限公司 | Method for integrally forming insulating tube and conducting layer and insulating sleeve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5697064B2 (en) * | 2012-08-27 | 2015-04-08 | 古河As株式会社 | Electromagnetic shield tube |
| CN204267906U (en) * | 2014-11-11 | 2015-04-15 | 贵州黔南科技塑业有限公司 | A kind of reinforced plastic pipe |
| CN204512687U (en) * | 2015-01-27 | 2015-07-29 | 衢州旭阳新材料科技有限公司 | A kind of novel plastics pipe |
| CN204884724U (en) * | 2015-08-31 | 2015-12-16 | 安徽德顺管业有限公司 | High heat -resisting insulation support |
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