CN103440933A - Method for manufacturing coaxial cables - Google Patents
Method for manufacturing coaxial cables Download PDFInfo
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- CN103440933A CN103440933A CN2013103488370A CN201310348837A CN103440933A CN 103440933 A CN103440933 A CN 103440933A CN 2013103488370 A CN2013103488370 A CN 2013103488370A CN 201310348837 A CN201310348837 A CN 201310348837A CN 103440933 A CN103440933 A CN 103440933A
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Abstract
The invention relates to the technical field of cables and the manufacturing technique thereof, in particular to a method for manufacturing non-halogen coaxial cables. The method comprises the following steps that, firstly, core wires are prepared, the metal core wires are combined to form a set, and an insulation layer is wrapped on the outer layer of the core wire set through extruding equipment, wherein high density polyethylene materials are adopted in the insulation layer; then a metal braiding layer wrapping the insulation layer is formed outside the insulation layer through a braiding machine; a coating wraps outside the braiding layer through extruding equipment, and thermoplastic polyester elastomer (TPEE) is adopted in the coating; finally; irradiation treatment is carried out on wires coated with the coating to obtain finished products. Through the adoption of the technical scheme, manufactured products have good engineering characteristic, and the performance of high temperature resistance, erosion resistance and aging resistance of the products are improved. Meanwhile, the method for manufacturing the coaxial cables can further simplify production procedures, and reduce production cost.
Description
Technical field:
The present invention relates to cable and Manufacturing Techniques field thereof, refer in particular to a kind of not halogen-containing coaxial cable manufacture method.
Background technology:
Coaxial cable is a kind of transfer of data wire rod widely of applying at present; it generally includes heart yearn, insulating barrier, braid and coating; heart yearn consists of one or more copper cash usually; its outer cladding one layer insulating; insulating barrier is coated with wire sheathing; for shielding external signal, disturb, outermost layer is coated with coating, whole wire rod is played to the effect of protection.
In traditional coaxial cable, insulating barrier and coating generally adopt insulating polymer to get final product, such as: PVC, PE, fluorine-containing polymer etc., it all has good insulating properties.Also to consider in actual use the resistance to elevated temperatures of various materials.Its serviceability temperature of cable that materials such as PVC, PE is made is generally all below 120 degrees centigrade.So in order to improve the resistance to elevated temperatures of product, usually select at present the FEP(perfluoroethylene-propylene) material, because it is a kind of fluorine-containing polymer, the fusing point of himself higher (can reach more than 300 degrees centigrade), there is high temperature resistant, fire-retardant and insulation effect preferably, but it exists maximum problem to contain exactly fluorine element.This is that its content to halogen in product has proposed more harsh regulation because European Union has referred to adopt higher environmental protection standard at present.Announce first SVHC investigation material, totally 15 kinds of materials towards the public in REACH on June 18th, 2008 according to European Union.On January 13rd, 2010, European chemicals administration (ECHA) confirms that 15 kinds of materials are included in REACH rules mandate candidate list.On June 18th, 2010, ECHA formally lists the 3rd crowd of SVHC that comprises 8 materials in the candidate list motion.Like this, up to now, in the REACH instruction, the high material of paying close attention to just comprises that in 38, material all can not exceed standard, and in product, the content of related substances can not surpass 0.1%.
So now, if the associated cable product is if the European Union area of outlet, its product must reach the related request of European Union, there are at present some producers to propose improved technical scheme, but still there is certain deficiency in these schemes: at first, current technical scheme need to, through twice radiation treatment, need insulating barrier and coating are carried out to radiation treatment, the complexity that has so just caused production technology, cause the production time to increase.Secondly, the coating of current technical scheme adopts the polyolefin polymer material, and the resistance to elevated temperatures of this employing and pliability are not good.Be directed to this, the inventor proposes following improved technical scheme.
Summary of the invention:
Technical problem to be solved by this invention for overcoming the existing deficiency of current product, provides a kind of manufacture method of not halogen-containing coaxial cable exactly.
For solving the problems of the technologies described above, the present invention has adopted following technical scheme: at first, prepare heart yearn, this is combined into one group by some metal core wire, coat a layer insulating by extrusion equipment at the skin of this core assembly line, this insulating barrier adopts high-density polyethylene material; Then, form the wire sheathing that one deck is coated on insulating barrier by braiding machine outside insulating barrier; Then, by extrusion equipment, at the outer one deck coating that coats of braid, this coating adopts thermoplastic polyester elastomer TPEE; Finally, the wire rod that has coated coating is carried out to radiation treatment, obtain finished product.
Furthermore, in technique scheme, described thermoplastic polyester elastomer TPEE adopts phthalic acid BDO and poly-butanols copolymerization to form, have the block copolymer of the hard section of polyester and polyester soft segment.
Furthermore, in technique scheme, described heart yearn is silver-plated tin annealed copper wire or tin annealed copper wire.
Furthermore, in technique scheme, described braid is adopted as the tin annealed copper wire braiding.
Furthermore, in technique scheme, also contain other additives in described thermoplastic polyester elastomer TPEE material, this additive is: fire retardant, age resister, wherein thermoplastic polyester elastomer TPEE, fire retardant, ageing-resistant ratio are 1:0.05-0.08:0.008-0.01.
Furthermore, in technique scheme, described fire retardant is non-halogen flame retardant.
After the present invention adopts technique scheme, at first, the present invention adopts thermoplastic polyester elastomer TPEE as coating, because TPEE is the block copolymer that contains the hard section of polyester and polyester soft segment, it has the elasticity of rubber and the intensity of engineering plastics, and it has better processing characteristics and longer useful life.Simultaneously, TPEE also has excellent heat resistance, can adapt to the high temperature of 150～160 ℃, and its mechanical performance loss under high low temperature is little.In addition, TPEE also has the advantage of splendid chemical resistance of concrete and ageing resistace preferably.
Secondly, the present invention adopts the TPEE material as coating, it is for the polyolefin polymer material, the TPEE material can directly adopt tubular extruded method to be coated on outside braid, coating just can not penetrate in braid like this, thus be conducive to wire rod later stage cut out the processing such as strip off.Comparatively speaking, owing to needing other material blends that Jia Ru More is many in traditional polyolefin polymer material, it does not use directly tubular extruded method, it usually adopts and enriches the method production of extruding, the easy like this coating that causes penetrates in braid, thereby cause being unfavorable for the later stage to existing wire rod cut out the processing such as strip off, affect client's use.
In addition, adopt TPEE as coating, only need a radiation treatment to get final product, because the thickness of TPEE is not high, the dosage of an irradiation has been enough to inside and outside radiation treatment, like this can Decrease production cost.
Certainly, the present invention meets European Union's dependent instruction, relevant halogen such as not fluorine-containing grade.
Embodiment:
Embodiment
Coaxial cable of the present invention comprises: be positioned at center heart yearn, be coated on the outer insulating barrier of heart yearn, be coated on the wire sheathing of insulating barrier and be positioned at outermost coating.Wherein heart yearn consists of many silver-plated tin annealed copper wires or tin annealed copper wire, and this insulating barrier adopts high-density polyethylene material, i.e. HDPE.High density polyethylene (HDPE) is high, the nonpolar thermoplastic resin of a kind of degree of crystallinity, and it has the characteristic of good chemicals-resistant, and the steam-preventing had and fine insulating properties.
During making, at first, heart yearn group outer cladding one layer insulating formed by some heart yearns by extrusion equipment.
Then, forming the wire sheathing that one deck is coated on insulating barrier by braiding machine outside insulating barrier. described braid 3 is adopted as tin annealed copper wire and is woven by braiding machine.
Then, by extrusion equipment, at the outer one deck coating that coats of braid, this coating adopts thermoplastic polyester elastomer TPEE.Described thermoplastic polyester elastomer TPEE adopts phthalic acid BDO and poly-butanols copolymerization to form, have the block copolymer of the hard section of polyester and polyester soft segment.
Also contain other additives in described thermoplastic polyester elastomer TPEE material, this additive is: fire retardant, age resister, wherein thermoplastic polyester elastomer TPEE, fire retardant, ageing-resistant ratio are 1:0.05-0.08:0.008-0.01.Described fire retardant is non-halogen flame retardant, magnesium hydroxide for example, aluminium hydroxide, Firebrake ZB etc.
Finally, the wire rod that has coated coating is carried out to radiation treatment, obtain finished product.Be generally 200-400KGY according to amount.
Certainly, the above is only example of the present invention, is not to limit the scope of the present invention, and all equivalences of doing according to the described structure of the present patent application the scope of the claims, feature and principle change or modify, and all should be included in the present patent application the scope of the claims.
Claims (6)
1. the manufacture method of a coaxial cable, it is characterized in that: the method comprises the following steps:
At first, prepare heart yearn, this is combined into one group by some metal core wire, by extrusion equipment, at the skin of this core assembly line, coats a layer insulating, and this insulating barrier adopts high-density polyethylene material;
Then, form the wire sheathing that one deck is coated on insulating barrier by braiding machine outside insulating barrier;
Then, by extrusion equipment, at the outer one deck coating that coats of braid, this coating adopts thermoplastic polyester elastomer TPEE;
Finally, the wire rod that has coated coating is carried out to radiation treatment, obtain finished product.
2. the manufacture method of a kind of coaxial cable according to claim 1 is characterized in that: described thermoplastic polyester elastomer TPEE adopts phthalic acid BDO and poly-butanols copolymerization to form, have the block copolymer of the hard section of polyester and polyester soft segment.
3. the manufacture method of a kind of coaxial cable according to claim 1, it is characterized in that: described heart yearn is silver-plated tin annealed copper wire or tin annealed copper wire.
4. the manufacture method of a kind of coaxial cable according to claim 1 is characterized in that: described braid is adopted as the tin annealed copper wire braiding.
5. the manufacture method of a kind of coaxial cable according to claim 2, it is characterized in that: in described thermoplastic polyester elastomer TPEE material, also contain other additives, this additive is: fire retardant, age resister, wherein thermoplastic polyester elastomer TPEE, fire retardant, ageing-resistant ratio are 1:0.05-0.08:0.008-0.01.
6. the manufacture method of a kind of coaxial cable according to claim 5, it is characterized in that: described fire retardant is non-halogen flame retardant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103488370A CN103440933A (en) | 2013-08-12 | 2013-08-12 | Method for manufacturing coaxial cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103488370A CN103440933A (en) | 2013-08-12 | 2013-08-12 | Method for manufacturing coaxial cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103440933A true CN103440933A (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103488370A Pending CN103440933A (en) | 2013-08-12 | 2013-08-12 | Method for manufacturing coaxial cables |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871687A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Preparation method of novel micro coaxial cable |
-
2013
- 2013-08-12 CN CN2013103488370A patent/CN103440933A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871687A (en) * | 2014-03-13 | 2014-06-18 | 苏州科茂电子材料科技有限公司 | Preparation method of novel micro coaxial cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131211 |
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| WD01 | Invention patent application deemed withdrawn after publication |