CN110509519A - A kind of bilayer heterogeneous material electric wire and preparation method thereof - Google Patents
A kind of bilayer heterogeneous material electric wire and preparation method thereof Download PDFInfo
- Publication number
- CN110509519A CN110509519A CN201910767023.8A CN201910767023A CN110509519A CN 110509519 A CN110509519 A CN 110509519A CN 201910767023 A CN201910767023 A CN 201910767023A CN 110509519 A CN110509519 A CN 110509519A
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- Prior art keywords
- electric wire
- preparation
- double
- temperature
- layer
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
It is an object of that present invention to provide a kind of preparation methods for being simple and efficient the double-deck dissimilar material electric wire at low cost.Using double injection machine.Internal layer charging is PU+ foaming agent, and outer layer feeds PVC plastic.It foams under high temperature, still outer layer is elastomeric state to inner layer expansion, and after foaming, foamed coating reaches largest deformation, controls depth of foam by adjusting temperature and PVC plastic thickness of feed layer.It cools, outer layer solidifies out into glassy state, electric wire sizing, and internal layer is compression foam plastics.Integrated artistic is simple and fast, easily operated, needs operating parameter few.
Description
Technical field
The present invention relates to a kind of double-deck electric wire and preparation method thereof, specifically, it is wear-resisting PVC that the present invention, which provides a kind of outer layer,
Material, internal layer are the double-deck dissimilar material electric wire of foamed urethane material, using coextrusion method preparation, simple and fast easy behaviour
Make.
Background technique
Protected mode of the outdoor electric wire due to lacking the routine such as indoor electric wire box, and use environment is severe --- it is passing
Vehicle rolls；Cross the extreme weathers such as cold overheat；Friction, cracky etc. are directly contacted with coarse ground.And the electricity of single material
Line outer layer is difficult to deal with various conditions, and every kind of material has respective limitation.So on the market, there are the double-deck electric wires.But
This bilayer electric wire, current preparation method are the double-deck material coextrusion of the same race.Such as patent CN106448949A, and it is current
The electric wire of the double-deck heterogeneous material also has very much, such as CN101770831A and patent CN109801746A are the double-deck xenogenesis material
Matter electric wire, but preparation method using wrapping up layer by layer.At present in production technology, there are no the coextrusion of the double-deck dissimilar material
The preparation method of electric wire outer layer.
Summary of the invention
For technical problem present in this field, the present invention is provided outside a kind of simply and easily double-deck heterogeneous material electric wire
The coextrusion preparation method and products thereof of layer.
A kind of bilayer heterogeneous material electric wire coextrusion preparation method, comprising the following steps:
(1) head is gone out using double-layer coextrusion, interior mold feeding inlet pan feeding is unexpanded polyurethane fluid, and outer mold feeding inlet enters
Material is viscous state PVC；
(2) it adjusts room temperature and starts cabling to T, while opening ectonexine charging, after coextrusion, PU layers of foam start to expand, cabling
Speed 100-300M/min；
(3) foaming is completed, and is cooled to room temperature, is obtained the double-deck heterogeneous material electric wire；
The temperature T is between 15-40 DEG C.
Wherein, the polyurethane foam time controls in 15-20s.
Wherein, the PVC is wear-resisting PVC material, is elastomeric state under normal temperature state, and flow temperature is 80-100 DEG C,
Glass transition temperature is less than 5 DEG C.
Wherein, the polyurethane foam temperature is 5-40 DEG C.
The double-deck heterogeneous material electric wire of above method preparation, which is characterized in that be applied to open air.
Wherein, the electric wire double braid covering outer layer is wear-resisting PVC material；Internal layer is foamed polyurethane, with a thickness of 2-
5cm。
The present invention prepares the double-deck heterogeneous material electric wire using the method for coextrusion, temperature after being squeezed out by control --- quickly
It is cooled to T(20-40 DEG C), allow the outer layer PVC of the viscous state of extrusion to be converted to elastomeric state, and also in the polyurethane of cream time
Then in internal layer.Polyurethane foams at temperature T, volume expansion, and the PVC of outer layer is elastomeric state at this time, will not be by foam
Polyurethane volume change is burst.By controlling the control of temperature, to determine the degree of outer layer PVC deformation, to control internal layer hair
Steep the thickness of polyurethane.Emphasis of the invention is control temperature T, according to the thickness needs of inner foam polyurethane, to set temperature
Degree, changes the largest deformation amount of outer layer PVC, to reach the needs of control inner foam polyurethane thickness.By the above method,
Disposably the double-deck heterogeneous material electric wire, simple process, strong operability, in original machinery equipment can be prepared by coetrusion
It is produced, without new equipment is introduced, further saves cost.
In the prior art, the double-deck dissimilar material and internal layer are the electric wire of foamed material, are all made of first wrapping inner layer foam material
It foams after material, in order to control the thickness of internal layer, needs additionally to purchase the mold of different volumes and need additional addition release agent
It controls foam layer thickness, then is molded, technique is cumbersome, and die cost is high.
Beneficial effect
1. disposable be coextruded the double-deck heterogeneous material wire outer skin, working hour is saved, operational sequence is omitted；
2. primary insulation is subject to when avoiding production twice extraneous collision and mechanical damage；It avoids interior exhausted when production twice
There is phenomena such as dirt in primary insulation caused by the problems such as edge is because storing；Reduce the cleaning time of cable head, to increase
Head the problem of property；
3. inner foam PU thickness only leans on temperature i.e. controllable, and filling is full, does not need additional mold；With outer layer and electricity
Line adhesion strength is high；
It 4. using the existing equipment of enterprise, can directly be produced in old equipment, without introducing new equipment, be saved
Investment of production cost.
Specific implementation method
The existing double injection machine extrusion die of our company, patent No. CN106448949A, specifically used method is in patent document
It has been described in detail.The raw materials used in the present invention, such as PVC granule (viscous state conversion temperature is 80 DEG C), foaming PU(foamed time is
15-20S and be free of release agent) be that market is bought, processing workshop temperature is room temperature, and room temperature is defaulted as 25 DEG C.Trace speed is adopted
Use 300M/min.
Embodiment 1
(1) PVC granule, which is heated to 85 DEG C, becomes processable fluid, injects outer layer mold feeding inlet；
(2) foam pu raw material ISO(TM80/20) and (5 DEG C) premixings injection internal layer mold feeding inlets of POL low temperature；
(3) outside outlet head, i.e., room temperature is set as 29 DEG C, starts cabling, while opening ectonexine feeding inlet and carrying out double-coating,
PVC material injection rate is 150L/min, and polyurethane materials injection rate is 285L/min；
(4) electric wire after double wrapped foams during cabling, sees whether there is a situation where that outer layer plastic skin rises brokenly, and
When adjust room temperature size and internal layer polyurethane injection rate；
(5) it is cooled to room temperature after the completion of foaming, the electric wire prepared is truncated into 20M every, observes section, the poly- ammonia of inner foam
Ester is filled up completely, and thickness is about 3cm, carries out end socket to electric wire, storage is sealed up for safekeeping.
Embodiment 2
(1) PVC granule, which is heated to 85 DEG C, becomes processable fluid, injects outer layer mold feeding inlet；
(2) foam pu raw material ISO(TM80/20) and (5 DEG C) premixings injection internal layer mold feeding inlets of POL low temperature；
(3) outside outlet head, i.e., room temperature is set as 38 DEG C, starts cabling, while opening ectonexine feeding inlet and carrying out double-coating,
PVC material injection rate is 150L/min, and polyurethane materials injection rate is 400L/min；
(4) electric wire after double wrapped foams during cabling, sees whether there is a situation where that outer layer plastic skin rises brokenly, and
When adjust room temperature size and internal layer polyurethane injection rate；
(5) it is cooled to room temperature after the completion of foaming, the electric wire prepared is truncated into 20M every, observes section, the poly- ammonia of inner foam
Ester is filled up completely, and thickness is about 5cm, carries out end socket to electric wire, storage is sealed up for safekeeping.
Embodiment 3
(1) PVC granule, which is heated to 85 DEG C, becomes processable fluid, injects outer layer mold feeding inlet；
(2) foam pu raw material ISO(TM80/20) and (5 DEG C) premixings injection internal layer mold feeding inlets of POL low temperature；
(3) outside outlet head, i.e., room temperature is set as 15 DEG C, starts cabling, while opening ectonexine feeding inlet and carrying out double-coating,
PVC material injection rate is 150L/min, and polyurethane materials injection rate is 188L/min；
(4) electric wire after double wrapped foams during cabling, sees whether there is a situation where that outer layer plastic skin rises brokenly, and
When adjust room temperature size and internal layer polyurethane injection rate；
(5) it is cooled to room temperature after the completion of foaming, the electric wire prepared is truncated into 10M every, observe section, inner foam is poly-
Urethane is filled up completely, and thickness is about 2cm, carries out end socket to electric wire, storage is sealed up for safekeeping.
Claims (6)
1. a kind of bilayer heterogeneous material electric wire is coextruded preparation method, which comprises the following steps:
(1) head is gone out using double-layer coextrusion, interior mold feeding inlet pan feeding is unexpanded polyurethane fluid, and outer mold feeding inlet enters
Material is viscous state PVC；
(2) it adjusts room temperature and starts cabling to T, while opening ectonexine charging, after coextrusion, PU layers of foam start to expand, cabling
Speed 100-300M/min；
(3) foaming is completed, and is cooled to room temperature, is obtained the double-deck heterogeneous material electric wire；
The temperature T is between 15-40 DEG C.
2. preparation method according to claim 1, which is characterized in that the polyurethane foam time controls in 15-
20s。
3. preparation method according to claim 1, which is characterized in that the PVC is wear-resisting PVC material, in room temperature shape
It is elastomeric state under state, flow temperature is 80-100 DEG C, and glass transition temperature is less than 5 DEG C.
4. preparation method according to claim 1, which is characterized in that the polyurethane foam temperature is 5-40 DEG C.
5. a kind of double-deck heterogeneous material electric wire by any preparation method preparation of claim 1-4, which is characterized in that answer
For open air.
6. bilayer heterogeneous material electric wire according to claim 5, which is characterized in that the electric wire double braid covering outer layer is
Wear-resisting PVC material；Internal layer is foamed polyurethane, with a thickness of 2-5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767023.8A CN110509519B (en) | 2019-08-20 | 2019-08-20 | Double-layer heterogeneous material electric wire and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767023.8A CN110509519B (en) | 2019-08-20 | 2019-08-20 | Double-layer heterogeneous material electric wire and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110509519A true CN110509519A (en) | 2019-11-29 |
| CN110509519B CN110509519B (en) | 2021-10-26 |
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| CN201910767023.8A Active CN110509519B (en) | 2019-08-20 | 2019-08-20 | Double-layer heterogeneous material electric wire and preparation method thereof |
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| CN102197077A (en) * | 2008-10-31 | 2011-09-21 | 大金美国股份有限公司 | Foam electric wire |
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| CN207966585U (en) * | 2018-01-29 | 2018-10-12 | 河南乐山电缆有限公司 | A kind of cable mold of co-extrusion double-layer plastic |
-
2019
- 2019-08-20 CN CN201910767023.8A patent/CN110509519B/en active Active
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| JP2002042579A (en) * | 2000-07-12 | 2002-02-08 | Lang Tsai Cheng | Color decorative wire rod and manufacturing method therefor |
| CN102197077A (en) * | 2008-10-31 | 2011-09-21 | 大金美国股份有限公司 | Foam electric wire |
| CN101992574A (en) * | 2010-09-30 | 2011-03-30 | 淄博英科框业有限公司 | Uvioresistant multi-layer polystyrene foaming section bar with co-extrusion function |
| CN103854730A (en) * | 2012-12-05 | 2014-06-11 | 烟台市电缆厂 | Environment-friendly low-smoke halogen-free flame retardant electric wire and manufacturing method |
| CN203325553U (en) * | 2013-06-14 | 2013-12-04 | 河南华泰特种电缆有限公司 | Anti-flaming environment-friendly wire |
| CN104299692A (en) * | 2014-10-30 | 2015-01-21 | 江苏亨通线缆科技有限公司 | High-reliability data flexible cable used for building |
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| CN110509519B (en) | 2021-10-26 |
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