CN102800440A - Extrusion processing method for polyimide insulated wire - Google Patents
Extrusion processing method for polyimide insulated wire Download PDFInfo
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- CN102800440A CN102800440A CN2012102993471A CN201210299347A CN102800440A CN 102800440 A CN102800440 A CN 102800440A CN 2012102993471 A CN2012102993471 A CN 2012102993471A CN 201210299347 A CN201210299347 A CN 201210299347A CN 102800440 A CN102800440 A CN 102800440A
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- electric wire
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- extruding process
- extruder
- wire according
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- 239000004642 Polyimide Substances 0.000 title claims abstract description 39
- 229920001721 polyimide Polymers 0.000 title claims abstract description 39
- 238000001125 extrusion Methods 0.000 title abstract 6
- 238000003672 processing method Methods 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 7
- 230000003044 adaptive effect Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000010981 drying operation Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract 1
- 239000006260 foam Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an extrusion processing method for a polyimide insulated wire, which belongs to the technical field of electric wire production. The extrusion processing method comprises the main production process as follows: raw polyimide material is dried; then a die core and a die sleeve in a machine head of an extruding machine are adjusted, and parameters are set; then the extruding machine is started up, and the raw polyimide material is added in a hopper; and finally, traction and extrusion are carried out. The extrusion processing method improves the traditional manufacturing technology, such as selection and use of raw material, design of screw rods, the setting of current temperature of a host machine and so on. Compared with the traditional firing package sintering technology, the extrusion processing method achieves high production speed, is not easy to bend and crack, has no volatile gas, and can control the insulation thickness freely, thereby improving the product qualification rate and reducing the pollution on environment.
Description
Technical field
The invention belongs to electric wire manufacturing technology field, be specifically related to a kind of extruding process thereof of polyimide insulative electric wire.
Background technology
Since 1908 for the first time the synthesis of polyimides material till now, polyimide material has obtained using widely in various fields because its excellent performance; But the poor processability of extruding owing to polyimides; Limited the application of this material in the electric wire field greatly, electric wire commonly used is at present used main with two kinds: (1) enamelled wire, adopt polyimide insulative lacquer coating molding; Its shortcoming is: be only applicable to electromagnetic wire; Coating thickness is thin, and insulating material is crisp, is not suitable for voltage levels and uses; (2) aviation lead adopts polyimides-polytetrafluoroethylene composite band wrapped, sinter molding, and its shortcoming is: speed of production is slow; Qualification rate is low, and to production environment, equipment precision requirement height, product surface quality is bad; Compactness is poor, and the product voltage withstand class is not high, and is halogen-containing.
Summary of the invention
Goal of the invention: the objective of the invention is in order to solve deficiency of the prior art, provide that a kind of speed of production is fast, the extruding process thereof of the polyimide insulative electric wire of environmentally safe.
Technical scheme: the extruding process thereof of a kind of polyimide insulative electric wire of the present invention comprises the steps:
Step 1. cleaning extruder, assurance equipment is totally dustless;
Step 2. is carried out drying operation with the polyimides raw material;
Step 3. is set each section of extruder temperature;
Step 4. is installed screw rod, the adaptive Luo Tang that is provided with on the said screw rod;
Step 5. is installed head, and regulates core rod and match with die sleeve, makes both concentrics;
Step 6. starts extruder, the adjusting screw(rod) rotating speed, and the polyimides raw material after will drying add in the hopper;
After the discharging of step 7. extruder die orifice, open traction, and finely tune in each section temperature and the step 3 identical;
The position of step 8. fine setting core rod and die sleeve makes both concentrics;
Step 9. is increase and decrease hauling speed and screw speed suitably, makes insulation external diameter size in the production requirement critical field, and makes insulation heart yearn natural cooling;
Step 10. stops traction, cleaning equipment.
As preferably, raw material described in the step 2 are Mitsui PL450C.
As preferably, drying time described in the step 2 is 5-7 hour.
As preferably, the screw rod described in the step 4, Luo Tang all adopt exotic material to make, and the endurance temperature is greater than 500 ℃.
As preferably, the hall of spiral shell described in the step 4 diameter is 35-40mm.
As preferably, the screw thread equidistance does not wait deeply in the screw rod described in the step 4, and the screw thread compression ratio is 1.5-2, and draw ratio is 25-30.
As preferably, each section of extruder described in the step 3 temperature is set at: 365 ℃ in a district, 375 ℃ in two districts, 380 ℃ in three districts, 385 ℃ in four districts, 392 ℃ in five districts, 398 ℃ in six districts, 392 ℃ in seven districts, 388 ℃ in eight districts.
As preferably, screw speed described in the step 6 is 5-7 rev/min.
As preferably, hauling speed described in the step 9 is 50-55m/ minute, and screw speed is 3-4 rev/min.
As preferably, the draw ratio of the crowded pipe mold of said extruder is 12-18, and the stretching balance is 0.95-1.05.
Beneficial effect: the present invention and the tradition sintering process of having a swollen head is compared, have speed of production fast, be difficult for bending crack, non-volatility gas and can freely control insulation thickness, thereby improved product percent of pass, reduced pollution to environment.
Embodiment
Below in conjunction with specific embodiment the present invention is described further:
Embodiment 1
Choose flowability polyimide material relatively preferably, like Mitsui PL450C, the screw rod of extruder, Luo Tang all adopt exotic material to make; The endurance temperature is greater than 500 ℃, and the screw thread equidistance does not wait deeply in the screw rod, and the screw thread compression ratio is 1.5-2; Draw ratio is 25-30; Spiral shell hall diameter is 35-40mm, and the draw ratio of the crowded pipe mold of extruder is 12-18, and the stretching balance is 0.95-1.05.
A kind of extruding process thereof of polyimide insulative electric wire, its production process comprises following several steps:
Step 1. cleaning extruder, assurance equipment is totally dustless;
Step 2. is carried out drying operation with the polyimides raw material, and drying time is 5 hours;
Step 3. is set each section of extruder temperature: 365 ℃ in a district, 375 ℃ in two districts, 380 ℃ in three districts, 385 ℃ in four districts, 392 ℃ in five districts, 398 ℃ in six districts, 392 ℃ in seven districts, 388 ℃ in eight districts;
Step 4. is installed screw rod, the adaptive Luo Tang that is provided with on the screw rod;
Step 5. is installed head, and regulates core rod and match with die sleeve, makes both concentrics;
Step 6. starts extruder, adjusting screw(rod) rotating speed to 5 rev/min, and in the adding of the polyimides raw material after will the dry hopper;
After the discharging of step 7. extruder die orifice, open traction, and finely tune in each section temperature and the step 3 identical;
The position of step 8. fine setting core rod and die sleeve makes both concentrics;
Step 9. increases traction and accelerates to 50m/ minute, reduces screw speed to 3 rev/min, makes insulation external diameter size in the production requirement critical field, and natural cooling finished product polyimide foam insulation;
Step 10. stops traction, cleaning equipment.
Embodiment 2
A kind of extruding process thereof of polyimide insulative electric wire, its production process comprises following several steps:
Step 1. cleaning extruder, assurance equipment is totally dustless;
Step 2. is carried out drying operation with the polyimides raw material, and drying time is 6 hours;
Step 3. is set each section of extruder temperature: 365 ℃ in a district, 375 ℃ in two districts, 380 ℃ in three districts, 385 ℃ in four districts, 392 ℃ in five districts, 398 ℃ in six districts, 392 ℃ in seven districts, 388 ℃ in eight districts;
Step 4. is installed screw rod, the adaptive Luo Tang that is provided with on the screw rod;
Step 5. is installed head, and regulates core rod and match with die sleeve, makes both concentrics;
Step 6. starts extruder, adjusting screw(rod) rotating speed to 6 rev/min, and in the adding of the polyimides raw material after will the dry hopper;
After the discharging of step 7. extruder die orifice, open traction, and finely tune in each section temperature and the step 3 identical;
The position of step 8. fine setting core rod and die sleeve makes both concentrics;
Step 9. increases traction and accelerates to 52m/ minute, reduces screw speed to 3 rev/min, makes insulation external diameter size in the production requirement critical field, and natural cooling finished product polyimide foam insulation;
Step 10. stops traction, cleaning equipment.
Embodiment 3
A kind of extruding process thereof of polyimide insulative electric wire, its production process comprises following several steps:
Step 1. cleaning extruder, assurance equipment is totally dustless;
Step 2. is carried out drying operation with the polyimides raw material, and drying time is 7 hours;
Step 3. is set each section of extruder temperature: 365 ℃ in a district, 375 ℃ in two districts, 380 ℃ in three districts, 385 ℃ in four districts, 392 ℃ in five districts, 398 ℃ in six districts, 392 ℃ in seven districts, 388 ℃ in eight districts;
Step 4. is installed screw rod, the adaptive Luo Tang that is provided with on the screw rod;
Step 5. is installed head, and regulates core rod and match with die sleeve, makes both concentrics;
Step 6. starts extruder, adjusting screw(rod) rotating speed to 7 rev/min, and in the adding of the polyimides raw material after will the dry hopper;
After the discharging of step 7. extruder die orifice, open traction, and finely tune in each section temperature and the step 3 identical;
The position of step 8. fine setting core rod and die sleeve makes both concentrics;
Step 9. increases traction and accelerates to 55m/ minute, reduces screw speed to 4 rev/min, makes insulation external diameter size in the production requirement critical field, and natural cooling finished product polyimide foam insulation;
Step 10. stops traction, cleaning equipment.
Claims (10)
1. the extruding process thereof of a polyimide insulative electric wire is characterized in that: comprise the steps:
Step 1. cleaning extruder, assurance equipment is totally dustless;
Step 2. is carried out drying operation with the polyimides raw material;
Step 3. is set each section of extruder temperature;
Step 4. is installed screw rod, the adaptive Luo Tang that is provided with on the said screw rod;
Step 5. is installed head, and regulates core rod and match with die sleeve, makes both concentrics;
Step 6. starts extruder, the adjusting screw(rod) rotating speed, and the polyimides raw material after will drying add in the hopper;
After the discharging of step 7. extruder die orifice, open traction, and finely tune in each section temperature and the step 3 identical;
The position of step 8. fine setting core rod and die sleeve makes both concentrics;
Step 9. is increase and decrease hauling speed and screw speed suitably, makes insulation external diameter size in the production requirement critical field, and makes insulation heart yearn natural cooling;
Step 10. stops traction, cleaning equipment.
2. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: raw material described in the step 2 are Mitsui PL450C.
3. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: drying time described in the step 2 is 5-7 hour.
4. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: the screw rod described in the step 4, Luo Tang all adopt exotic material to make, and the endurance temperature is greater than 500 ℃.
5. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: the hall of spiral shell described in the step 4 diameter is 35-40mm.
6. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: the screw thread equidistance does not wait deeply in the screw rod described in the step 4, and the screw thread compression ratio is 1.5-2, and draw ratio is 25-30.
7. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: each section of extruder described in the step 3 temperature is set at: 365 ℃ in a district, 375 ℃ in two districts; 380 ℃ in three districts; 385 ℃ in four districts, 392 ℃ in five districts, 398 ℃ in six districts; 392 ℃ in seven districts, 388 ℃ in eight districts.
8. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: screw speed described in the step 6 is 5-7 rev/min.
9. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: hauling speed described in the step 9 is 50-55m/ minute, and screw speed is 3-4 rev/min.
10. the extruding process thereof of a kind of polyimide insulative electric wire according to claim 1 is characterized in that: the draw ratio of the crowded pipe mold of said extruder is 12-18, and the stretching balance is 0.95-1.05.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102993471A CN102800440A (en) | 2012-08-20 | 2012-08-20 | Extrusion processing method for polyimide insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102993471A CN102800440A (en) | 2012-08-20 | 2012-08-20 | Extrusion processing method for polyimide insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102800440A true CN102800440A (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102993471A Pending CN102800440A (en) | 2012-08-20 | 2012-08-20 | Extrusion processing method for polyimide insulated wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616258A (en) * | 2018-12-05 | 2019-04-12 | 成都福斯汽车电线有限公司 | A kind of electric wire extruder control system for linear velocity and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03152811A (en) * | 1989-11-08 | 1991-06-28 | Furukawa Electric Co Ltd:The | Manufacture of heat resisting thin insulated wire |
| US5233011A (en) * | 1988-10-20 | 1993-08-03 | Mitsui Toatsu Chemicals, Incorporated | Process for preparing insulated wire |
| CN102142306A (en) * | 2011-01-26 | 2011-08-03 | 中国科学院等离子体物理研究所 | Method for producing high-voltage-resistant measuring line with good insulating property |
| CN102354552A (en) * | 2011-08-31 | 2012-02-15 | 江苏耐安特种电缆有限公司 | Ultralow-temperature cable and manufacturing process thereof |
-
2012
- 2012-08-20 CN CN2012102993471A patent/CN102800440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5233011A (en) * | 1988-10-20 | 1993-08-03 | Mitsui Toatsu Chemicals, Incorporated | Process for preparing insulated wire |
| JPH03152811A (en) * | 1989-11-08 | 1991-06-28 | Furukawa Electric Co Ltd:The | Manufacture of heat resisting thin insulated wire |
| CN102142306A (en) * | 2011-01-26 | 2011-08-03 | 中国科学院等离子体物理研究所 | Method for producing high-voltage-resistant measuring line with good insulating property |
| CN102354552A (en) * | 2011-08-31 | 2012-02-15 | 江苏耐安特种电缆有限公司 | Ultralow-temperature cable and manufacturing process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616258A (en) * | 2018-12-05 | 2019-04-12 | 成都福斯汽车电线有限公司 | A kind of electric wire extruder control system for linear velocity and method |
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Application publication date: 20121128 |