CN102122044A - Sheath material for optical cable - Google Patents
Sheath material for optical cable Download PDFInfo
- Publication number
- CN102122044A CN102122044A CN 201010504761 CN201010504761A CN102122044A CN 102122044 A CN102122044 A CN 102122044A CN 201010504761 CN201010504761 CN 201010504761 CN 201010504761 A CN201010504761 A CN 201010504761A CN 102122044 A CN102122044 A CN 102122044A
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- CN
- China
- Prior art keywords
- carbon black
- optical cable
- sheath material
- high density
- density polyethylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a sheath material for an optical cable, which comprises high density polyethylene, melt viscosity modifier, higher fatty acid soap processing agent, carbon black master batch and nucleating agent by special weight percentage. The sheath material is low in processing temperature, excellent in processing performance and cabling, resistant to environmental stress, long in service life and resistant to wear, and has optical protection.
Description
Technical field
The present invention relates to a kind of polyethylene sheath material, relate in particular to a kind of Polethylene protecting sheath material for optical cable.
Background technology
At present, along with China's development of economic construction, communication career also makes rapid progress is taking place to change, the quality requirements that is used for the communication cable sheath material is more and more higher, people wish that it has good weatherability, toughness, outside wearing quality and the environmental stress crack resistance, people also wish simultaneously good technology capability and flexibility to be arranged, the optical cable smooth surface that grows is smooth, and the existing optical cable of producing mostly is the high density polyethylene sheath material with sheath, and its processing temperature is than higher, and this has just proposed higher requirement to the equipment of producing optical cable, difficulty of processing is bigger, and the optical cable hardness height of producing, light loss is bigger, and is relatively more difficult for the one-tenth dish of optical cable.In a word, the optical cable product that existing sheath material is produced is not ideal enough, so existing sheath material and preparation technology thereof await further improvement.
Summary of the invention
In order to solve above-mentioned drawback, the invention provides a kind of polyethylene sheathing material for optical cable, a kind of protecting sleeve of optical cable, its feature comprises high density polyethylene, melt viscosity modifier, higher fatty acid soap processing aid, carbon black master batch and nucleator, percentage by weight is:
High density polyethylene 86.8～88.5%
Melt viscosity modifier 6.0～8.0%
Higher fatty acid soap processing aid 0.3～0.5%
Carbon black master batch 2.5%
Nucleator 0.1～0.45%.
Wherein, described protecting sleeve of optical cable carbon black is that concentration is the small particle diameter carbon black (20nm) of 0.5wt% and the carbon black (95nm) in the relative coarse grain footpath of 2wt%.
Embodiment
Embodiment 1
High density polyethylene 88.8%
Nucleator 0.1%
Melt viscosity modifier 8%
Higher fatty acid soap processing aid 0.5%
Carbon black master batch (50% content) 2.5%
[β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] defends tetrol ester 0.1% season
Wherein:
High density polyethylene is density: 0.953g/cm3, melt index (MI): 0.4g/10min, pulling strengrth 21MPa, resisting environmental stress and cracking＞500hr, breaking elongation: more than 800%.Low molecular weight polyethylene is density: 0.9g/cm3, and softening point: 101 ℃, mean molecular weight 2000.
Black masterbatch: concentration is the small particle diameter carbon black (20nm) of 0.5wt% and the carbon black (95nm) in the relative coarse grain footpath of 2wt%, content of carbon black: 40%, and black chromatic value: 94.
Embodiment 2
High density polyethylene 88.5%
Nucleator 0.1%
Melt viscosity modifier 6.0%
Higher fatty acid soap processing aid 0.3%
Carbon black master batch (50% content) 2.5%
Thio-2 acid dilaurate 0.1%
Wherein:
High density polyethylene is density: 0.953g/cm3, melt index (MI): 0.4g/10min, pulling strengrth 21MPa, resisting environmental stress and cracking＞500hr, breaking elongation: 〉=800%.
Low molecular weight polyethylene is density: 0.9g/cm3, and softening point: 101 ℃, mean molecular weight 2000.
Black masterbatch: concentration is the small particle diameter carbon black (20nm) of 0.5wt% and the carbon black (95nm) in the relative coarse grain footpath of 2wt%, content of carbon black: 40%, and black chromatic value: 94.
Embodiment 3
High density polyethylene 86.8%
Nucleator 0.35%
Melt viscosity modifier 6.0%
Higher fatty acid soap processing aid 0.2%
Low molecular weight polyethylene 4.0%
Carbon black master batch (50% content) 2.5%
[β-(and 3,5-di-t-butyl-4-hydroxyl
The base phenyl) propionic acid] defend tetrol ester 0.08% season
Thio-2 acid dilaurate 0.07%
Wherein:
High density polyethylene is density: 0.953g/cm3, melt index (MI): 0.4g/10min, pulling strengrth 21MPa, resisting environmental stress and cracking＞500hr, breaking elongation: 800% above low molecular weight polyethylene is, density: 0.9g/cm3, softening point: 101 ℃, mean molecular weight 2000
Black masterbatch: concentration is the small particle diameter carbon black (20nm) of 0.5wt% and the carbon black (95nm) in the relative coarse grain footpath of 2wt%, content of carbon black: 40%, and black chromatic value: 94.
Concentration is 0.5% small particle diameter carbon black (20nm) and the carbon black (95nm) in 2% relative coarse grain footpath.Almost has same photoprotection.Reduce the content (generally being lower than 2.6%) of the carbon black in the protective cover material; can guarantee the ability of the resisting environmental stress and cracking of sheath; it is low to obtain processing temperature thus, the sheath material that good processability, stranding are good, environmental stress resistance, life-span are long, wear-resistant, have photoprotection.
The invention is not restricted to the foregoing description; in design scope of the present invention; the description of book according to the above description, those of ordinary skill in the art also can make some conspicuous changes, but these changes all should fall within the protection domain of claim of the present invention.
Claims (2)
1. protecting sleeve of optical cable, its feature comprises high density polyethylene, melt viscosity modifier, higher fatty acid soap processing aid, carbon black master batch and nucleator, percentage by weight is:
High density polyethylene 86.8～88.5%
Melt viscosity modifier 6.0～8.0%
Higher fatty acid soap processing aid 0.3～0.5%
Carbon black master batch 2.5%
Nucleator 0.1～0.45%.
2. protecting sleeve of optical cable according to claim 1 is characterized in that carbon black is that concentration is the small particle diameter carbon black (20nm) of 0.5wt% and the carbon black (95nm) in the relative coarse grain footpath of 2wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010504761 CN102122044A (en) | 2010-10-13 | 2010-10-13 | Sheath material for optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010504761 CN102122044A (en) | 2010-10-13 | 2010-10-13 | Sheath material for optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102122044A true CN102122044A (en) | 2011-07-13 |
Family
ID=44250631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010504761 Pending CN102122044A (en) | 2010-10-13 | 2010-10-13 | Sheath material for optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102122044A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4626618A (en) * | 1984-05-08 | 1986-12-02 | Fujikura Ltd. | DC electric power cable |
| WO1993005424A1 (en) * | 1991-09-10 | 1993-03-18 | Neste Oy | Optical cable |
| CN1234515A (en) * | 1998-04-24 | 1999-11-10 | 四川联合大学 | Communication cable, optical cable protecting casing material of high-density polyethylene |
| US6197852B1 (en) * | 2000-02-28 | 2001-03-06 | Equistar Chemicals, Lp | Polyolefin concentrates and composition having improved carbon black dispersion |
-
2010
- 2010-10-13 CN CN 201010504761 patent/CN102122044A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4626618A (en) * | 1984-05-08 | 1986-12-02 | Fujikura Ltd. | DC electric power cable |
| WO1993005424A1 (en) * | 1991-09-10 | 1993-03-18 | Neste Oy | Optical cable |
| CN1234515A (en) * | 1998-04-24 | 1999-11-10 | 四川联合大学 | Communication cable, optical cable protecting casing material of high-density polyethylene |
| US6197852B1 (en) * | 2000-02-28 | 2001-03-06 | Equistar Chemicals, Lp | Polyolefin concentrates and composition having improved carbon black dispersion |
Non-Patent Citations (2)
| Title |
|---|
| 《塑料工业》 19990128 孙杨宣 新型HDPE通信光(电)缆护套料的研制 38-40 第27卷, 第1期 * |
| 《浙江化工》 19941230 喻金芳等 炭黑对聚乙烯电缆护套料性能影响的探讨 28-30 第25卷, 第4期 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110713 |