CN105869800A - Electrical PVC pipe and preparation method of - Google Patents
Electrical PVC pipe and preparation method of Download PDFInfo
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- CN105869800A CN105869800A CN201610395415.2A CN201610395415A CN105869800A CN 105869800 A CN105869800 A CN 105869800A CN 201610395415 A CN201610395415 A CN 201610395415A CN 105869800 A CN105869800 A CN 105869800A
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- electrician
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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 an electrical PVC pipe, which comprises a protecting casing pipe and an electromagnetic shielding layer, wherein the protecting casing pipe comprises an inner layer and an outer layer, and the electromagnetic shielding layer is positioned between the inner layer and the outer layer; the inner layer is provide with a gridding layer formed by weaving metal wires, and the gridding layer is fixed at the inner layer near the inner wall; reinforcing ribs permeated through the gridding layer are convexly arranged on the inner wall of the inner layer. The invention also discloses a preparation method of the electrical PVC pipe. The preparation method comprises the following steps: 1) weaving the metal wires into the latticed gridding layer; 2) weaving graphite wires prepared from grapheme into a latticed shape; 3) covering the gridding layer obtained from a step 1 on a mold bar, and injecting PVC on the mold bar to form the inner layer; 4) coating a finished product obtained in a step 2 on the outer side wall of the inner layer obtained in a step 3; 5) injecting a PVC melt mixed with masterbatch into the outer side of a finished product obtained in a step 4 to form the outer layer. The electrical pipe not only maintains the long-term effects of electromagnetic shielding, but also has good impact resistance.
Description
Technical field
The present invention relates to electrical casing pipe technical field, more specifically, it relates to a kind of PVC electrician's pipe and preparation method.
Background technology
PVC electrician manages, it is often referred to hard PVC fire retardant insulating clod wash electrical casing pipe, Main Ingredients and Appearance is polrvinyl chloride, add other compositions to strengthen its fire resistance, compressive property, heat resistance, toughness and ductility etc., and add the color masterbatch of different colours to change its color so that it is in circuit is installed, strong and weak electricity wiring can be distinguished with different colors.
At present, notification number is that the Chinese patent of CN104993433A discloses a kind of flame-retardant and anti-static UPVC electrician pipe, it includes: UPVC electrician pipe basic unit, flexible anti-shock layer, the first antistatic layer and the second antistatic layer, the outer surface of described UPVC electrician pipe basic unit is disposed with described flexible anti-shock layer and the first described antistatic layer outward from interior, the inner surface of described UPVC electrician pipe basic unit is provided with the second described antistatic layer, and described UPVC electrician pipe basic unit includes the raw material components of following parts by weight:
UPVC50-70 part, butyl acrylate 20-40 part, maleic anhydride base polymer 10-30 part, plasticized modifier 6-17 part, cross-linking agent 5-10 part, halogen-free flame retardants 3-5 part and smoke suppressant 3-5 part.Although said structure can bring the effects such as certain fire-retardant, antistatic, but its overall structure is the most in a tubular form, therefore electrician's pipe is by the most weak for during radial impact force, its impact resistance is from its structure, and the pollution problem to electromagnetic radiation can not get solving.
Notification number is that the Chinese patent of CN105374477A discloses a kind of electromagnetic shielding electrician pipe, 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 maintain the key property of electrician's pipe, electro-magnetic screen layer is then to be coated with in flame-retardant electric casing or a layer of external application possesses the material of electromagnetic shielding, and its Main Function is exactly to weaken even to mask electromagnetic radiation produced by electric wire or cable while keeping the key property of fire-retardant electric power protecting pipe.Although coating possesses the material of electromagnetic shielding on electrician's pipe, make it that shielding of electromagnetism is had certain effect, but electromagnetic shielding material is simply simply coated in inner side or the outside of electrician's pipe, therefore easily comes off in contact friction, thus cannot play the effect of shielding electromagnetism；And its overall structure is the most in a tubular form, therefore electrician's pipe is by the most weak for during radial impact force, its impact resistance is from its structure.
Summary of the invention
The deficiency existed for prior art, it is an object of the invention to provide a kind of PVC electrician's pipe, the effect keeping shielding electromagnetism that this electrician's pipe can not only be long-acting, has good shock resistance simultaneously.
For achieving the above object, the technical scheme is that a kind of PVC electrician's pipe, including protecting pipe and electro-magnetic screen layer, described protecting pipe includes internal layer and outer layer, described electro-magnetic screen layer is between internal layer and outer layer, and described internal layer is provided with clathrum, and described clathrum is formed by metal wire knitted, described clathrum is fixed on internal layer at inwall, and the inwall of described internal layer is convexly equipped with the reinforcement penetrating clathrum.
By using technique scheme, electro-magnetic screen layer is arranged on the inside of protecting pipe, i.e. between internal layer and outer layer, so can be prevented effectively from because of in electrician's pipe and extraneous contact process, thus wear away electro-magnetic screen layer, it is thus advantageous to extend the Use Limitation of screen layer；Internal layer is wrapped in by the clathrum of metal wire knitted in injection moulding process simultaneously, moreover, also penetrate clathrum on the inwall of internal layer, be formed with reinforcement, thus the structural strength of electrician's pipe it is greatly improved by structure, make electrician's pipe possess lasting and good shock resistance.
The present invention is further arranged to: the graphite silk that described electro-magnetic screen layer is made up of Graphene is worked out.
By using technique scheme, Graphene not only has physical arrangement and excellent mechanics, the electromagnetic property of uniqueness, also has good microwave absorbing property, and the shielding of electromagnetism is played a positive role by its characteristic having magnetic loss and electrical loss concurrently.
The present invention is further arranged to: described outer layer is made up of the PVC being mixed with color masterbatch.
By using technique scheme, being mixed with the PVC of color masterbatch to arrange only for outer layer, therefore internal layer without adding color masterbatch, and can be still able to the color reached by outer layer and tell the men from the boys the effect of fulgurite distribution, advantageously reduce the usage amount to color masterbatch, only need to be mixed in outer layer.
The present invention is further arranged to: described protecting pipe be respectively arranged at two ends with can snapping hook arm and button arm, described hook arm and button arm cross section all in hook-shaped.
By using technique scheme, protecting pipe can realize the splicing of protecting pipe by the hook arm at two ends and button arm clasp joint, facilitates wiring personnel quickly connect or disassemble protecting pipe.
The present invention is further arranged to: described hook arm is arranged with the button the most inclined structure of arm, and described hook arm tilts towards button arm one end of protecting pipe, and described button arm tilts towards hook arm one end of protecting pipe.
By using technique scheme, when hooking arm and fastening with button arm, hook arm and button arm can be made because mutually having enhancing stable connection under the traction of hook formation, thus avoid electrician's pipe to be axially disengaging.
The present invention is further arranged to: be convexly equipped with barb inside described hook arm, and described button arm is provided with the hook and slot for housing barb.
By using technique scheme, hook barb when arm fastens with button arm and buckle in hook and slot, thus improve the stable connection degree of electrician's pipe.
The present invention also provides for the preparation method of a kind of PVC electrician's pipe:
1), latticed clathrum is become by metal wire knitted；
2), the graphite silk made with Graphene is woven into latticed；
3), the clathrum obtained in step 1 is enclosed within mould rod, then on mould rod, uses PVC injection mo(u)lding internal layer；
4), the finished product obtained in step 2 has been coated on the internal layer lateral wall of step 3；
5), the finished product obtained in step 4 is molded outside it be mixed into color masterbatch PVC melt formed outer layer.
By using technique scheme, by protecting pipe injection mo(u)lding at twice, it is possible to make electro-magnetic screen layer be arranged between internal layer and outer layer, thus avoid producing the damage of outer bound pair electro-magnetic screen layer；And internal layer effectively wraps clathrum in injection moulding process, thus is greatly improved the structural strength of electrician's pipe.
The present invention is further arranged to: the mould rod in step 3 is provided with on its lateral wall groove along its length.
By using technique scheme, groove is set and can allow internal layer in injection moulding process, have part injection melt can penetrate clathrum and flow in groove, thus effectively form reinforcement.
The present invention is further arranged to: the injection mo(u)lding under vacuum state of outer layer described in step 5.
By using technique scheme, the outer layer joint with internal layer in injection moulding process can be avoided to produce bubble or cavity, be conducive to the degree of engagement improving outer layer with internal layer.
The present invention is further arranged to: outer layer described in step 5 rotates sizing after injection under vacuum state.
By using technique scheme, rotate under vacuum state when not solidifying after outer injection, enable outer layer to be wrapped in uniformly on internal layer, make the wall thickness of electrician's pipe keep uniformly.
In sum, the method have the advantages that and electro-magnetic screen layer is arranged in the protecting pipe that the external world cannot touch, thus avoid the inefficacy of electro-magnetic screen layer, it is possible to the effectively pollution problem for electromagnetic radiation makes it be alleviated；Also by increasing clathrum and reinforcement, thus improve the structural strength of electrician's pipe, no matter electrician's pipe is secretly buried or its interior circuit can be effectively protected in external application.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of electrician's pipe；
Fig. 2 is the perspective view of electrician's pipe；
Fig. 3 is A portion enlarged diagram in Fig. 2.
Reference: 1, protecting pipe；11, internal layer；111, reinforcement；12, outer layer；13, electro-magnetic screen layer；14, clathrum；15, arm is hooked；151, barb；16, button arm；161, hook and slot.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the present invention is described in more detail.The most identical parts are presented with like reference characters.It should be noted that, in describing below, the word "front", "rear" of use, "left", "right", "up" and "down" refer to the direction in accompanying drawing, and word " bottom surface " and " end face ", " interior " and " outward " refer respectively to the direction towards or away from particular elements geometric center.
nullA kind of PVC electrician's pipe，With reference to shown in Fig. 1，In the cross section of electrician's pipe, visually go out to include protecting pipe 1 and electro-magnetic screen layer 13，Protecting pipe 1 includes internal layer 11 and outer layer 12，Electro-magnetic screen layer 13 is between internal layer 11 and outer layer 12，Internal layer 11 is provided with clathrum 14，Clathrum 14 is formed (not shown in FIG.) by metal wire knitted，Clathrum 14 is fixed on internal layer 11 at inwall，Owing to clathrum 14 is formed by metal wire knitted，Therefore gap is left between each tinsel，When internal layer 11 is molded on clathrum 14，Have part PVC solution to penetrate in gap，Therefore the application is to make clathrum 14 be wrapped by internal layer 11，And the inwall near internal layer 11，And for being more easy to demonstrate internal layer 11 and clathrum 14 in Fig. 1，Thus with clathrum 14, to be fixed on the internal layer 11 description at inwall slightly different.
With reference to shown in Fig. 1, the inwall of internal layer 11 is also convexly equipped with reinforcement 111, by the structure of clathrum 14 with reinforcement 111, is greatly improved the structural strength of electrician's pipe itself, makes electrician's pipe possess lasting and good shock resistance.Secondly reinforcement 111 can strengthen the contact area of the electric wire in electrician Guan Yuqi; or fill up the gap between power down line; make electrician's pipe internal substantial; so that electrician's pipe is overall sturdy; be conducive to improving structural strength, no matter electrician's pipe secretly buried or its interior electric wire can be effectively protected in external application.
In addition, the graphite silk that electro-magnetic screen layer 13 is made up of Graphene can be worked out, carbon-based material is directed to electromagnetic shielding and absorbing have been had and has studied the most widely, as a kind of new carbon Graphene, become novel effective electromagnetic shielding or microwave absorbing material, meeting the absorbing material requirement to " thin, light, wide, strong ", the shielding of electromagnetism can be played a positive role by the characteristic having magnetic loss and electrical loss concurrently.This electro-magnetic screen layer 13 is arranged on the inside of protecting pipe 1 simultaneously, i.e. between internal layer 11 and outer layer 12, so can be prevented effectively from because of in electrician's pipe and extraneous contact process, thus wear away electro-magnetic screen layer 13, it is thus advantageous to extend the Use Limitation of screen layer, and effectively pollution problem for electromagnetic radiation it can be made to be alleviated.
With reference to shown in Fig. 1, outer layer 12 and internal layer 11 are that split is arranged, therefore in outer layer 12 injection molding process, the PVC being mixed with color masterbatch can be used to make, and the injection raw material of internal layer 11 can be without adding color masterbatch, the most not only be still able to reach to be told the men from the boys by the color of outer layer 12 effect of fulgurite distribution, but also is more beneficial for reducing the usage amount to color masterbatch.
With reference to shown in Fig. 2, being respectively arranged at two ends with of protecting pipe 1 can the hook arm 15 of snapping and button arm 16, substantially hook arm 15 and button arm 16 is same structure, and the most inclined structure is arranged, with reference to shown in Fig. 3, hooking the arm 15 button arm 16 one end inclination towards protecting pipe 1, button arm 16 tilts (not shown) towards hook arm 15 one end of protecting pipe 1, difference is to be separately positioned on the two ends of protecting pipe 1, for splicing with the connection realizing electrician's pipe；Being to hook inside arm 15 in addition with difference and be convexly equipped with barb 151, button arm 16 is provided with the hook and slot 161 for housing barb 151, hooks arm 15 and the splicing firmness of button arm 16 for strengthening in protecting pipe 1 splicing.
Preparation method and the step of this PVC electrician's pipe are as follows:
1), with what metal wire knitted became that latticed clathrum 14(needs herein it is, can be according to the difference of shielding object, a little adjustment can be done for selection wiry, the such as diamagnetic material such as copper and aluminum can be as the preferred material of electrostatic shielding body, and the highest ferromagnetic material of the pcrmeabilities such as steel can be as the preferred material of magnetic shield, therefore the present invention can strengthen effectiveness, or increases the effect of antistatic), leave certain gap between each tinsel.
2) the graphite silk, with Graphene made is woven into latticed (needing, owing to Graphene is the thinnest and the hardest material, the graphite silk that therefore it is made also can be woven into latticed) herein, leaves certain gap between each graphite silk.
3), the clathrum 14 obtained in step 1 is enclosed within mould rod, and mould rod is provided with groove on its lateral wall along its length, using PVC injection mo(u)lding internal layer 11 again on mould rod, PVC injection molding material can use material mixture ratio of the prior art, also can realize in documents；And PVC injection melt can pass through the gap between each tinsel thus penetrate in the groove of mould rod in this injection moulding process, get final product molding internal layer 11 and reinforcement 111 at one stroke, the most also clathrum 14 is fixed in internal layer 11, thus avoids coming off of clathrum 14.
4), the finished product obtained in step 2 has been coated on internal layer 11 lateral wall of step 3.
5), the finished product obtained in step 4 is molded outside it be mixed into color masterbatch PVC melt formed outer layer 12, color masterbatch can select colour system as required, and the injection moulding process in outside is preferably positioned under vacuum state, the outer layer 12 joint with internal layer 11 in injection moulding process can be avoided to produce bubble or cavity, be conducive to the degree of engagement improving outer layer 12 with internal layer 11；And under vacuum state, rotate sizing when not solidifying after outer layer 12 completes injection, make outer layer 12 to be wrapped in uniformly on internal layer 11, make the wall thickness of electrician's pipe keep uniformly.
Step 5 leaves certain gap due to electro-magnetic screen layer 13, therefore melt can be from the lateral wall that this gap penetrates into internal layer 11 in injection moulding process for outer layer 12, thus bonding, be conducive to improving the connectivity of internal layer 11 outer layer 12 and integraty, thus be prevented effectively from internal layer 11 and outer layer 12 separates；Make electro-magnetic screen layer 13 be arranged between internal layer 11 and outer layer 12 simultaneously, thus avoid producing the damage of outer bound pair electro-magnetic screen layer 13, be conducive to extending electromagnetic shielding timeliness.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, and 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 those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. PVC electrician's pipe, including protecting pipe (1) and electro-magnetic screen layer (13), it is characterized in that: described protecting pipe (1) includes internal layer (11) and outer layer (12), described electro-magnetic screen layer (13) is positioned between internal layer (11) and outer layer (12), described internal layer (11) is provided with clathrum (14), described clathrum (14) is formed by metal wire knitted, described clathrum (14) is fixed on internal layer (11) at inwall, the reinforcement (111) penetrating clathrum (14) it is convexly equipped with on the inwall of described internal layer (11).
PVC electrician the most according to claim 1 manages, and it is characterized in that: the graphite silk that described electro-magnetic screen layer (13) is made up of Graphene is worked out.
PVC electrician the most according to claim 1 and 2 manages, and it is characterized in that: described outer layer (12) is made up of the PVC being mixed with color masterbatch.
PVC electrician the most according to claim 1 manages, it is characterized in that: described protecting pipe (1) be respectively arranged at two ends with can snapping hook arm (15) and button arm (16), described hook arm (15) and detain arm (16) cross section all in hook-shaped.
PVC electrician the most according to claim 4 manages, it is characterized in that: described hook arm (15) is arranged with button arm (16) the most inclined structure, described hook arm (15) tilts towards button arm (16) one end of protecting pipe (1), and described button arm (16) tilts towards hook arm (15) one end of protecting pipe (1).
6. manage according to the PVC electrician described in claim 4 or 5, it is characterized in that: described hook arm (15) inner side is convexly equipped with barb (151), and described button arm (16) is provided with the hook and slot (161) for housing barb (151).
7. the preparation method of PVC electrician's pipe described in any one in claim 1-6, is characterized in that: 1), become latticed clathrum (14) by metal wire knitted；
2), the graphite silk made with Graphene is woven into latticed；
3), the clathrum (14) obtained in step 1 is enclosed within mould rod, then on mould rod, uses PVC injection mo(u)lding internal layer (11)；
4), the finished product obtained in step 2 has been coated on internal layer (11) lateral wall of step 3；
5), the finished product obtained in step 4 is molded outside it be mixed into color masterbatch PVC melt formed outer layer (12).
The preparation method of PVC electrician's pipe the most according to claim 7, is characterized in that: the mould rod in step 3 is provided with on its lateral wall groove along its length.
The preparation method of PVC electrician's pipe the most according to claim 7, is characterized in that: outer layer described in step 5 (12) injection mo(u)lding under vacuum state.
The preparation method of PVC electrician's pipe the most according to claim 9, is characterized in that: outer layer described in step 5 (12) rotates sizing after injection 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395415.2A CN105869800B (en) | 2016-06-06 | 2016-06-06 | PVC electric tubes and preparation method |
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| Publication Number | Publication Date |
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| CN105869800A true CN105869800A (en) | 2016-08-17 |
| CN105869800B CN105869800B (en) | 2017-11-28 |
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314167A (en) * | 2017-08-22 | 2017-11-03 | 哈尔滨东安橡胶有限责任公司 | The shellproof rubber hose of armouring and preparation method |
| CN109859904A (en) * | 2019-03-29 | 2019-06-07 | 江苏神马电力股份有限公司 | Insulation tube and the integrally formed method of conductive layer and insulating sleeve |
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| CN104584709A (en) * | 2012-08-27 | 2015-04-29 | 古河As株式会社 | Electromagnetic shielding tube |
| 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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| CN104584709A (en) * | 2012-08-27 | 2015-04-29 | 古河As株式会社 | Electromagnetic shielding 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107314167A (en) * | 2017-08-22 | 2017-11-03 | 哈尔滨东安橡胶有限责任公司 | The shellproof rubber hose of armouring and preparation method |
| CN109859904A (en) * | 2019-03-29 | 2019-06-07 | 江苏神马电力股份有限公司 | Insulation tube and the integrally formed method of conductive layer and insulating sleeve |
| 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 |
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| CN105869800B (en) | 2017-11-28 |
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