CN108059754A - A kind of preparation method of communication cable insulating layer material - Google Patents
A kind of preparation method of communication cable insulating layer material Download PDFInfo
- Publication number
- CN108059754A CN108059754A CN201710767015.4A CN201710767015A CN108059754A CN 108059754 A CN108059754 A CN 108059754A CN 201710767015 A CN201710767015 A CN 201710767015A CN 108059754 A CN108059754 A CN 108059754A
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- CN
- China
- Prior art keywords
- density polyethylene
- insulating layer
- layer material
- communication cable
- cable insulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
- C08K5/23—Azo-compounds
Abstract
A kind of preparation method of communication cable insulating layer material, comprises the following steps：Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain once mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60‑80:20‑40:0.5‑1.5；Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, to form secondary mixture and foam, so as to which communication cable insulating layer material be made；Wherein, blowing temperature is 140 DEG C 190 DEG C.The preparation method of the communication cable insulating layer material of the present invention is ingenious in design, highly practical.
Description
Technical field
The present invention relates to coaxial cable field more particularly to a kind of preparation methods of communication cable insulating layer material.
Background technology
Cable experienced solid core polyethylene insulation, chemical blowing polyethylene insulation, the poly- second of vertical hole for its evolution
Alkene insulation, physically foamed pe insulation four-stage.Physical blowing cable is most preferable for its structure type and performance
A kind of new high-tech product.It is suitable for main cable, branch cable and service cable etc. at present.But common physics hair
Steeping polyethylene-insulated coaxial cable, moisture protection is weaker in the application, and flexibility is relatively low, is easy to cause loss and insulating layer
Damage.
The content of the invention
The present invention is directed to above-mentioned technical problem, it is proposed that a kind of preparation method of communication cable insulating layer material.
Technical solution proposed by the invention is as follows：
The present invention proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60-80:20-40:
0.5-1.5；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which communication cable insulating layer material be made；Wherein, blowing temperature is 140 DEG C -190 DEG C.
In the preparation method of the above-mentioned communication cable insulating layer material of the present invention, the density of high density polyethylene (HDPE) is
0.94g/cm3-0.97g/cm3, the density of low density polyethylene (LDPE) is 0.91g/cm3-0.93g/cm3。
In the preparation method of the above-mentioned communication cable insulating layer material of the present invention, nucleating agent using azodicarbonamide,
DBS, P-hydroxybenzoic acid.
In the preparation method of the above-mentioned communication cable insulating layer material of the present invention, foamed gas using carbon dioxide or
Nitrogen.
The preparation method of the communication cable insulating layer material of the present invention uses high density polyethylene (HDPE) and low density polyethylene (LDPE)
As the key component of cable insulation layer material, and carry out blending, with this overcome high density polyethylene (HDPE) foam performance it is bad, hand over
The inadequate characteristic of connection degree, meanwhile, it is uniform by increasing nucleating agent polyethylene foam cell size, further improve foam performance
And electric property.The preparation method of the communication cable insulating layer material of the present invention is ingenious in design, highly practical.
Specific embodiment
The technical problems to be solved by the invention are：Common physical-foaming polythene insulation coaxial cable is in the application
Moisture protection is weaker, and flexibility is relatively low, is easy to cause loss and the damage of insulating layer.The present invention is carried with regard to the technical problem
The technical thought gone out is：Using the key component of high density polyethylene (HDPE) and low density polyethylene (LDPE) as cable insulation layer material, and
Blending is carried out, the characteristic that high density polyethylene (HDPE) foam performance is bad, the degree of cross linking is inadequate is overcome with this, meanwhile, it is nucleated by increasing
Agent polyethylene foam cell size is uniform, further improves foam performance and electric property.
Specifically, the present invention proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60-80:20-40:
0.5-1.5；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which communication cable insulating layer material be made；Wherein, blowing temperature is 140 DEG C -190 DEG C.
In the above-described embodiment, the density of high density polyethylene (HDPE) is 0.94g/cm3-0.97g/cm3, low density polyethylene (LDPE)
Density be 0.91g/cm3-0.93g/cm3。
Further, nucleating agent is the modified additive of polymer, and nucleus is provided for polymer crystallization.Its mechanism of action master
If：In the molten state, the nucleus needed for being provided due to nucleating agent, polymer are transformed into out-phase by original homogeneous nucleation
Nucleation, so as to accelerate crystallization rate, refines grain structure, and is conducive to improve the rigidity of product, shortens molding cycle,
The dimensional stability of final products is kept, inhibits light scattering, improves the transparency and lustrous surface and the Physical Mechanical of polymer
Energy (such as rigidity, modulus) shortens process-cycle etc..In the present embodiment, nucleating agent uses azodicarbonamide, DBS, to hydroxyl
Yl benzoic acid.
High density polyethylene (HDPE) has excellent mechanics and electric property, but high density polyethylene (HDPE) is linear molecule chain, is sent out
The degree of cross linking is inadequate during bubble, and melt strength is small, and foam performance is bad.Low density polyethylene (LDPE) is branch polymer, and melt strength is big,
By the way that high density polyethylene (HDPE), low density polyethylene (LDPE) are carried out the mixed and modified foam performance that can improve high density polyethylene (HDPE), subtract
Few abscess breaks through steep that wall loss.Increasing nucleating agent can allow foam bubble uniform in size, further improve foam performance and electricity
Performance.
Further, foamed gas use carbon dioxide or nitrogen.In foaming process, under blowing temperature, polyethylene
In molten state, foamed gas are passed into once mixture, are mixed with once mixture, so as to form secondary mixing
Object.When secondary mixture passes through extrusion die, due to draught head, the gas of mixing generates bubble formation polyethylene foamed.Foaming
By in gas station pressurization injection barrel, air pressure adjusts gas according to mold mouth pressure.
In order to make the technical purpose of the present invention, technical solution and technique effect apparent, in order to art technology
Personnel understand and implement the present invention, and below in conjunction with specific embodiment, the present invention will be further described in detail.
First embodiment
The present embodiment proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60:39:1；Nucleating agent
Using DBS；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which the sample 1 of communication cable insulating layer material be made；Wherein, blowing temperature is 150 DEG C；Hair
It steeps gas and uses nitrogen.
Second embodiment
The present embodiment proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60:39:1；Nucleating agent
Using DBS；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which the sample 2 of communication cable insulating layer material be made；Wherein, blowing temperature is 190 DEG C；Hair
It steeps gas and uses nitrogen.
3rd embodiment
The present embodiment proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60:39:1；Nucleating agent
Using azodicarbonamide；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which the sample 3 of communication cable insulating layer material be made；Wherein, blowing temperature is 150 DEG C；Hair
It steeps gas and uses nitrogen.
Fourth embodiment
The present embodiment proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60:39:1；Nucleating agent
Using P-hydroxybenzoic acid；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which the sample 4 of communication cable insulating layer material be made；Wherein, blowing temperature is 150 DEG C；Hair
It steeps gas and uses nitrogen.
5th embodiment
The present embodiment proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：70:29:0.5；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which the sample 5 of communication cable insulating layer material be made；Wherein, blowing temperature is 170 DEG C；Into
Core agent uses DBS.
Sixth embodiment
The present embodiment proposes a kind of preparation method of communication cable insulating layer material, comprises the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain one
Secondary mixture；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：78.5:20:1.5；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, it is secondary to be formed
Mixture simultaneously foams, so as to which the sample 6 of communication cable insulating layer material be made；Wherein, blowing temperature is 170 DEG C；Into
Core agent uses DBS.
After testing, the detection data of the sample 1- samples 6 of communication cable insulating layer material are as follows：
Sample 4 is used for the preparation of communication cable, obtains cable 1；And by the fade performance of cable 1 and existing cable into
Row comparison, there is following result：
It should be appreciated that for those of ordinary skills, it can be improved or be become according to the above description
It changes, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (4)
1. a kind of preparation method of communication cable insulating layer material, which is characterized in that comprise the following steps：
Step S1, high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent are mixed in proportion, to obtain mixed once
Object；Wherein, the mass ratio of high density polyethylene (HDPE), low density polyethylene (LDPE) and nucleating agent is：60-80:20-40:0.5-1.5；
Step S2, under blowing temperature, foamed gas is passed through into once mixture and are uniformly mixed, to form secondary mixture
And foam, so as to which communication cable insulating layer material be made；Wherein, blowing temperature is 140 DEG C -190 DEG C.
2. the preparation method of communication cable insulating layer material according to claim 1, which is characterized in that high-density polyethylene
The density of alkene is 0.94g/cm3-0.97g/cm3, the density of low density polyethylene (LDPE) is 0.91g/cm3-0.93g/cm3。
3. the preparation method of communication cable insulating layer material according to claim 1, which is characterized in that nucleating agent uses
Azodicarbonamide, DBS, P-hydroxybenzoic acid.
4. the preparation method of communication cable insulating layer material according to claim 1, which is characterized in that foamed gas are adopted
With carbon dioxide or nitrogen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710767015.4A CN108059754A (en) | 2017-08-28 | 2017-08-28 | A kind of preparation method of communication cable insulating layer material |
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| CN201710767015.4A CN108059754A (en) | 2017-08-28 | 2017-08-28 | A kind of preparation method of communication cable insulating layer material |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284726A (en) * | 1999-07-19 | 2001-02-21 | 三菱电线工业株式会社 | Foamable composition and coaxial cable with insulated sponge layer |
| CN101976752A (en) * | 2010-12-01 | 2011-02-16 | 天津安讯达科技有限公司 | 3-inch high-power physical foam polyethylene insulation coaxial radio frequency cable and manufacture process thereof |
| CN102361148A (en) * | 2011-10-10 | 2012-02-22 | 中天日立射频电缆有限公司 | Leakage coaxial cable for reducing smoke density and production method thereof |
| CN104031305A (en) * | 2014-05-08 | 2014-09-10 | 上海化工研究院 | Material special for ultrahigh-molecular-weight polyethylene tube, and preparation and application thereof |
| CN104377413A (en) * | 2014-11-18 | 2015-02-25 | 中天日立射频电缆有限公司 | Self-deicing leaky coaxial cable and manufacturing method thereof |
| CN104700963A (en) * | 2015-03-05 | 2015-06-10 | 浙江万马天屹通信线缆有限公司 | Secondary physical foaming method of coaxial cable |
-
2017
- 2017-08-28 CN CN201710767015.4A patent/CN108059754A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284726A (en) * | 1999-07-19 | 2001-02-21 | 三菱电线工业株式会社 | Foamable composition and coaxial cable with insulated sponge layer |
| CN101976752A (en) * | 2010-12-01 | 2011-02-16 | 天津安讯达科技有限公司 | 3-inch high-power physical foam polyethylene insulation coaxial radio frequency cable and manufacture process thereof |
| CN102361148A (en) * | 2011-10-10 | 2012-02-22 | 中天日立射频电缆有限公司 | Leakage coaxial cable for reducing smoke density and production method thereof |
| CN104031305A (en) * | 2014-05-08 | 2014-09-10 | 上海化工研究院 | Material special for ultrahigh-molecular-weight polyethylene tube, and preparation and application thereof |
| CN104377413A (en) * | 2014-11-18 | 2015-02-25 | 中天日立射频电缆有限公司 | Self-deicing leaky coaxial cable and manufacturing method thereof |
| CN104700963A (en) * | 2015-03-05 | 2015-06-10 | 浙江万马天屹通信线缆有限公司 | Secondary physical foaming method of coaxial cable |
Non-Patent Citations (2)
| Title |
|---|
| 张治国: "《塑料吹塑成型技术问答》", 31 January 2012, 印刷工业出版社 * |
| 王澜 等: "《高分子材料》", 31 January 2009, 中国轻工业出版社 * |
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Application publication date: 20180522 |
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