CN1121632A - Winding-type noise-suppressing high-tension resistive cord - Google Patents
Winding-type noise-suppressing high-tension resistive cord Download PDFInfo
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- CN1121632A CN1121632A CN 95109297 CN95109297A CN1121632A CN 1121632 A CN1121632 A CN 1121632A CN 95109297 CN95109297 CN 95109297 CN 95109297 A CN95109297 A CN 95109297A CN 1121632 A CN1121632 A CN 1121632A
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- Prior art keywords
- polymer
- winding
- type noise
- core body
- suppressing high
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0063—Ignition cables
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- Insulated Conductors (AREA)
- Communication Cables (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Provided is a wire wound anti-noise high voltage resistance electric wire for which an economical EPDM is used as a base polymer to form a core without deteriorating the properties which a core should originally have. A resistance wire is transversely coiled on a coiling core produced by extrusion-coating of a reinforcing core with a polymer mixed with ferrite powder and the coiling core on which the resistance wire is transversely coiled is successively coated with an insulating layer, a reinforcing mesh, and a sheath. The polymer used is a blend polymer consisting of ethylene-propylene-diene copolymer (EPDM) as a base polymer and ethylene-vinyl acetate copolymer (EVA) which has high affinity with EPDM and vulcanized together at the time of vulcanizatin as a reinforcing polymer and the blending ratio of EPDM and EVA is set to be 60 pts. by wt. of EPDM to 40 pts. by wt. of EVA. The mixing ratio of the ferrite powder is set to be 500 pts. by wt. of the ferrite powder to 100 pts. by wt. of the blend polymer.
Description
The present invention relates to a kind of winding-type noise-suppressing high-tension resistive cord, the ignition lead of the internal combustion engine of steam supply car etc. is used.
High-voltage resistive cable is used for the high pressure that ignition coil produces directly or by ignition distributor is sent to spark plug, all requires transmission losses low always, and noise suppression is effective, heat-resisting, withstand voltage performance height.Usually, at present the high-voltage resistive cable that uses has two kinds: fine rule formula high-voltage resistive cable and Wound-rotor type high-voltage resistive cable, the impregnated fiber of the former carbon containing, the fine wire that the latter contains high resistivity are wrapped on the core body that magnetic material etc. makes.
Be that Japanese Utility Model patent gazette 1-32253 (1989) goes up disclosed a kind of Wound-rotor type high-voltage resistive cable shown in Fig. 3, this resistive conductor comprises: the line feeder of being made by aramid fibre or glass fibre etc. 51; There is the raw polymer extruding of ferrite powder to be overlayed on the core body of making on the line feeder 51 52 by blending; Be wound on the resistance wire 53 on the core body 52; Extruding is overlayed on the insulating barrier 54 on core body 52 and the resistance wire 53; Overlayed on the braid 55 on the insulating barrier 54; With the outermost foreskin 56 that is overlayed on the braid 55.
This Wound-rotor type high-voltage resistive cable, as shown in Figure 4, insulating barrier 54 is by strip off, and the core body 52 that is wound with resistance wire 53 is just along resistive conductor outer surface bending longitudinally.Then metal terminal A is enclosed within on the resistive conductor, core body 52 is crooked together with resistance wire 53, is connected between metal terminal A and the resistance wire 53.Therefore, the resistance wire 53 of lopping must be avoided unclamping when divesting insulating barrier 54, when core body 52 is crooked, must avoids skew and contacts with each other, skew and contact with each other resistance is changed.For this reason, therefore the common practice be raw polymer do not vulcanize with inelastic situation under resistance wire 53 is wound on the core body 52, resistance wire 53 is embedded in the core body 52; Again raw polymer is carried out vulcanizing treatment, make resistance wire 53 flexibly be pressed into core body 52 surfaces.
In this Wound-rotor type high-voltage resistive cable, the material of core body 52 adopts fluorubber and silicon rubber usually, and these all are all high raw polymer of heat resistance and intensity (Japanese Utility Model patent gazette 60-28002 (1985) and Japanese Utility Model patent gazette 5-20467 (1993)).But preferably can replace expensive fluorubber and silicon rubber raw polymer with cheap ethylene-propylene rubber (EPR) as core body.
Yet the raw polymer of core body adopts EPR, and hardness is improper when uncured is handled, when resistance wire is wound on the core body that the raw polymer of uncured processing makes, is pressed into core surface with can not making the resistance wire suitable elasticity.In addition, the EPR intensity that vulcanizing treatment is crossed is low, and extension property is poor, and core body is torn in the insulating barrier strip, splits when bending is connected on the terminal.
Winding-type noise-suppressing high-tension resistive cord of the present invention, its core body comprises alloyed polymer, alloyed polymer by as the ethylene-propylene rubber of raw polymer together with making with the good reinforcement polymer blending of the compatibility of ethylene-propylene rubber, through co-vulcanization, alloyed polymer is mixed with magnetic material in the vulcanizing treatment process; Be wound with resistance wire on the core body; The core body that is wound with resistance wire is covered with insulating barrier again.
The reinforcement polymer is EVAc preferably.
The reinforcement polymer is polyethylene preferably.
The reinforcement polymer is polypropylene preferably.
There have been the reinforcement polymer good, winding-type noise-suppressing high-tension resistive cord of the present invention that the suitable resistance wire of intensity of the core body of uncured is twined thereon with the EPR compatibility.Vulcanizing treatment is impelled among the EPR, in the reinforcement polymer and produce crosslinked action between EPR and the reinforcement polymer, thereby improved intensity through the core body of over cure.Cost manufacturing physical property that so just can be lower and general core body comprise the duplicate winding-type noise-suppressing high-tension resistive cord of resistive conductor of fluorubber and silicon rubber.
Therefore the objective of the invention is to improve employing EPR that a kind of winding-type noise-suppressing high-tension resistive cord as the raw polymer of core body.
Read following detailed description in conjunction with the accompanying drawings and can more clearly understand above and other objects of the present invention, characteristics, each side and advantage.
Fig. 1 is the perspective view of most preferred embodiment of the present invention.
Fig. 2 is the detailed section view that most preferred embodiment is wound with the core body of resistance wire.
Fig. 3 is the perspective view of prior art example.
Fig. 4 is the resistive conductor of prior art is connected situation with metal terminal a cutaway view.
Referring now to a description of drawings most preferred embodiment of the present invention.Referring to Fig. 1, winding-type noise-suppressing high-tension resistive cord 10, its line feeder 11 comprise 1000 dawn aramid yarns of three bursts of twisting, and its core body 12 is 1.3 millimeters of external diameters, is had the extruded polymer of ferrite powder to be overlayed on the line feeder 11 made by blending.
Ferrite powder preferably includes the ferrite that Mn-Zn is a primary raw material, for example Mn-Zn-Fe (MnZn iron oxide (manganese-zinc-ferric oxide)).
Above-mentioned polymer is the blend of ethylene-propylene-diene trimer (EPDM) and EVAc (EVA), the former is a kind of EPR as raw polymer, the compatibility of the latter and EPDM is good, handles (covulcanized) as the reinforcement polymer through co-vulcanization in the vulcanizing treatment process.The blending ratio of EPDM and EVA by weight, is that 60 parts of EPDM are than 40 parts of EVA.Core body 12 contains 100 parts alloyed polymer and 500 parts ferrite powder by weight.
Under the situation that the alloyed polymer uncured is handled, 50 microns Ni-Cr resistance wires 13 are wrapped on the core body 12, every meter around 7200 circle resistance wires.Because the alloyed polymer hardness that uncured is handled is suitable, thereby resistance wire 13 just partly embeds in the core body 12, as shown in Figure 2.Then (under 160 ℃ of conditions) carry out (30 minutes) vulcanizing treatment, and resistance wire 13 half is fixed in the core body 12 with embedding.
Insulating barrier 14 is that extruding lining EPDM forms on the core body 12 that is wound with resistance wire 13.Be coated with the reinforcement braid 15 that glass braid becomes on the insulating barrier 14, reinforcement braid 15 is coated with the crust 16 that EPDM makes.
The reinforcement polymer is not limited to EVA, can also adopt for example polypropylene (PP) and polyethylene (PE).Especially, be advisable with EVA and PE.
From following table 1 as can be seen, when the scope of EPDM and the blending ratio of PE by weight for about 80 parts to 70 parts EPDM to about 20 parts to 30 parts PE (being that alloyed polymer contains about 20% by weight to 30%PE), and the blending of EPDM and EVA than scope by weight at about 80 parts to 40 parts EPDM during correspondingly to about 20 parts to 60 parts EVA (being that alloyed polymer contains about 20% by weight to 60%EVA), if the blending amount of ferrite powder is about 100 parts to 600 parts by weight, then but press workability is satisfactory, and the physical property of the polymer that non-hardened is handled is, hardness: 75 to 85, percentage elongation 50% or more than.This can be avoided core body 12 unlikely also unlikely tearing of splitting when resistance wire 13 is wound on it.
In addition, blending is than when above-mentioned scope, the polymer after the vulcanizing treatment, its physical property that draws is intensity: 5 megapascal (MPa)s or more than, percentage elongation: 50% or more than.This can be avoided core body 12 divesting insulation 14 and bending core body so that unlikelyly when connecting between resistive conductor and metal terminal tear and split.
Table 1
| Prescription | Prescription | Ferrite formulations | Technical performance | |||||||||
| Blend composition | EPDM PE EVA ferrite (Mn-zn-Fe) dicumyl peroxide | ??100 ????- ????- ??500 ????3 | ???80 ???20 ????- ???500 ????3 | ???70 ???30 ????- ???500 ????3 | ???60 ???40 ???- ??500 ????3 | ???80 ????- ???20 ??500 ????3 | ???60 ???- ???40 ??500 ???3 | ????40 ????- ????60 ???500 ????3 | ???60 ???- ???40 ??700 ???3 | ???60 ???40 ????- ??300 ????3 | ||
| Physical property | Uncured is handled | Hot strength (megapascal (MPa)) | ??1.2 | ???2.7 | ???3.3 | ??3.9 | ??2.0 | ??2.8 | ???3.5 | ??3.0 | ??3.2 | 1.0 or more than |
| Percentage elongation (%) | ??220 | ???80 | ???60 | ???30 | ??160 | ??100 | ???60 | ???33 | ??170 | 50 or above (free from flaw when being bent in the resistive conductor manufacture process) | ||
| Hardness (the Japanese Industrial Standards Commit) | ???61 | ???83 | ???84 | ???85 | ???75 | ???86 | ???80 | ???79 | ???87 | 75-85 (the metallic resistance silk is suitable embed core stop in) | ||
| After the vulcanizing treatment | Hot strength (megapascal (MPa)) | ???2.7 | ??5.2 | ???6.0 | ??6.9 | ??5.2 | ??5.9 | ??6.5 | ??5.9 | ??6.0 | 5.0 or above (core body is unlikely tearing when divesting the resistive conductor end | |
| Percentage elongation (%) | ???210 | ???80 | ???60 | ???30 | ??100 | ???70 | ???53 | ???30 | ??250 | 50 or above (chipware crooked time free from flaw) | ||
Although explained and described the present invention, the above description all is exemplary and not restrictive in all respects.Therefore should be understood that and under the prerequisite that does not depart from scope of the present invention, can design various remodeling and variation.
Claims (8)
1. winding-type noise-suppressing high-tension resistive cord comprises:
Core body, described core body comprises alloyed polymer, described polymer is by make blending magnetic material in the described alloyed polymer as the ethylene-propylene rubber of raw polymer with the compatibility reinforcement polymer blending good, that handle through co-vulcanization of ethylene-propylene rubber in the vulcanizing treatment process;
Resistance wire is wound on the described core body; With
Insulating barrier, by overlay on described be wound with described resistance wire core body on.
2. winding-type noise-suppressing high-tension resistive cord as claimed in claim 1 is characterized in that,
Be coated with the reinforcement braid on the described insulating barrier, be coated with crust on the described reinforcement braid.
3. winding-type noise-suppressing high-tension resistive cord as claimed in claim 1 or 2 is characterized in that, described reinforcement polymer is an EVAc.
4. winding-type noise-suppressing high-tension resistive cord as claimed in claim 3 is characterized in that,
Described alloyed polymer contains about 20% to 60% described reinforcement polymer by weight.
5. winding-type noise-suppressing high-tension resistive cord as claimed in claim 1 or 2 is characterized in that,
Described reinforcement polymer is a polyethylene.
6. winding-type noise-suppressing high-tension resistive cord as claimed in claim 5 is characterized in that, described alloyed polymer contains about by weight 20% to 30% described reinforcement polymer.
7. winding-type noise-suppressing high-tension resistive cord as claimed in claim 1 or 2 is characterized in that, described reinforcement polymer is a polypropylene.
8. as claim 4 or 6 described winding-type noise-suppressing high-tension resistive cords, it is characterized in that,
Per by weight 100 parts of described alloyed polymer, the amount of the ferrite powder that described magnetic material is contained are about 100 parts to 600 parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP186073/94 | 1994-08-08 | ||
| JP6186073A JP3013710B2 (en) | 1994-08-08 | 1994-08-08 | Winding type noise prevention high voltage resistance wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1121632A true CN1121632A (en) | 1996-05-01 |
Family
ID=16181919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95109297 Pending CN1121632A (en) | 1994-08-08 | 1995-08-08 | Winding-type noise-suppressing high-tension resistive cord |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0696808B1 (en) |
| JP (1) | JP3013710B2 (en) |
| CN (1) | CN1121632A (en) |
| DE (1) | DE69508323T2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102385946A (en) * | 2010-09-04 | 2012-03-21 | 深圳市沃尔核材股份有限公司 | Shielding wire and manufacturing method |
| CN104067355A (en) * | 2011-11-28 | 2014-09-24 | 普雷斯顿利特电线有限责任公司 | Anti-capillary resistor wire |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6054028A (en) * | 1996-06-07 | 2000-04-25 | Raychem Corporation | Ignition cables |
| JPH1068849A (en) * | 1996-08-29 | 1998-03-10 | Tokin Corp | Optical fiber cable |
| JP4508401B2 (en) * | 2000-11-20 | 2010-07-21 | 三井化学株式会社 | Manufacturing method of alloy extrusion molded product, manufacturing apparatus and molded product |
| CN108129743A (en) * | 2017-12-20 | 2018-06-08 | 苏州希普拉斯新材料有限公司 | New-energy automobile halogen-free flameproof high resiliency cable material of polyolefin |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58103415U (en) | 1981-12-31 | 1983-07-14 | 株式会社デンソー | Low capacitance wire-wound high voltage resistance wire |
| JPS6028002U (en) | 1983-08-03 | 1985-02-25 | 株式会社 堀技術研究所 | vacuum holding valve |
| JPH01211807A (en) * | 1988-02-19 | 1989-08-25 | Yazaki Corp | Oil wire type high voltage resistant cable |
| JPH0770249B2 (en) * | 1989-11-16 | 1995-07-31 | 矢崎総業株式会社 | High voltage resistance wire for noise prevention |
| JPH0520467U (en) | 1991-01-04 | 1993-03-12 | 日本電気株式会社 | Equipment |
-
1994
- 1994-08-08 JP JP6186073A patent/JP3013710B2/en not_active Expired - Lifetime
-
1995
- 1995-07-25 DE DE1995608323 patent/DE69508323T2/en not_active Expired - Fee Related
- 1995-07-25 EP EP19950111676 patent/EP0696808B1/en not_active Expired - Lifetime
- 1995-08-08 CN CN 95109297 patent/CN1121632A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102385946A (en) * | 2010-09-04 | 2012-03-21 | 深圳市沃尔核材股份有限公司 | Shielding wire and manufacturing method |
| CN104067355A (en) * | 2011-11-28 | 2014-09-24 | 普雷斯顿利特电线有限责任公司 | Anti-capillary resistor wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3013710B2 (en) | 2000-02-28 |
| JPH0850816A (en) | 1996-02-20 |
| EP0696808A2 (en) | 1996-02-14 |
| EP0696808A3 (en) | 1996-03-27 |
| DE69508323D1 (en) | 1999-04-22 |
| EP0696808B1 (en) | 1999-03-17 |
| DE69508323T2 (en) | 1999-11-11 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |