CN100392461C - Expansion water blocking tape for optical cable - Google Patents
Expansion water blocking tape for optical cable Download PDFInfo
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- CN100392461C CN100392461C CNB2003101079309A CN200310107930A CN100392461C CN 100392461 C CN100392461 C CN 100392461C CN B2003101079309 A CNB2003101079309 A CN B2003101079309A CN 200310107930 A CN200310107930 A CN 200310107930A CN 100392461 C CN100392461 C CN 100392461C
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- optical cable
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- water blocking
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Abstract
The present invention relates to a water blocking material and particularly relates to a single-layer expansion water blocking tape for an optical fiber. The present invention has a base material of non-woven fabric which is provided by a roller; the non-woven fabric is dipped through prepolymer liquid, and on-site crosslinking is carried out in a reaction drying tunnel so as to obtain the expansion water blocking tape for the optical cable, wherein the prepolymer liquid is composed of (according to weight portions) 40 to 60 portions of acrylic acid, 20 to 40 portions of sodium hydroxide, 3 portions of acrylamide, 3 portions of hydroxyethyl methacrylate, 0.1 to 0.2 portion of potassium persulfate, 130 portions of water, 0.1 portion of cross-linking agent and 0.2 portion of surfactant. The prepolymer liquid of the present invention comprises multiple types of acrylic monomers and various auxiliary agents and can ensure a higher water absorption quantity and a water absorption speed rate after the on-site crosslinking so as to meet the requirements of the water blocking tape for water absorption. The active auxiliary agents have the function of enabling a polymer to have a sufficient surface area so that the higher water absorption speed rate can be achieved, and the power dropping problem of traditional water blocking tapes can be effectively avoided.
Description
Technical field:
The present invention relates to a kind of material water-proof material, relate in particular to a kind of optical cable individual layer expansion water strip.
Background technology:
In communication light, cable, mechanical pressure in laying or keeping in repair, cause entering of water and moisture sometimes, if water and moisture are invaded optical cable inside or terminal box internal corrosion metal and optical fiber, the signal that can cause the rapid decline of hydrogen loss, broken string, electrical insulation capability and influence optical cable transmits.
For addressing the above problem, guarantee the safe operation of optical cable and increase the service life several mode waterproof retaining tides below adopting usually at present.
(1) at the inner thixotropic ointment of filling of optical cable, comprises that hydrophobic (hydrophobic) type, water-swellable and expanded by heating type etc. are several.Such material is oily material, and loading is big, the cost height, and easily contaminated environment be difficult to cleaning, and the deadweight of optical cable is overweight.
(2) adopt the hot melt adhesive water-ring between interior oversheath, low, the complex process of this method efficient only has minority producer to realize.
(3) adopt dryness expanding powder material water-proof material (imbibition powder, waterstop etc.).This method technological requirement height, material usage is big, cost is high, the deadweight of optical cable is also overweight.
The consumption of waterstop is increasing, and domestic production producer is increasing, simply introduces the most frequently used processing construction method of present domestic waterstop below:
The job operation of interlayer waterstop---sandwich method
Sandwich method is to be base band with the nonwoven fabrics, then water absorbing agent and filling material is dispersed in its surface equably, presses with one deck base band lid again, is rolled into band.
The job operation of coating-type waterstop---organism and powdery absorbent are scattered method respectively
This method is to utilize adhesive that water absorbent polymer is sticked on nonwoven fabrics or the thin polymer film.Base band is provided by cylinder, and tackifier is sprayed onto substrate surface by spraying plant, and Powdered water absorbent polymer is measured as required by the distributor uniformly dispersing, again with sprayer with the tackifier of volume be sprayed on the powder water absorbent polymer above.With firing equipment tackifier and water absorbent polymer are heated to uniform temperature then, promptly obtain the waterstop of tablet.
The most of import super absorbent resin that adopts of present domestic waterstop manufacturer, this high water absorbency polymer costs an arm and a leg, and this has just increased cost of products, and this resin is as preserving bad very easily moisture absorption caking, and make the distributor blocking of dusting, bring very big inconvenience to production.When spraying, tackifier may be stained with some impurity, for the stability of optical cable following work is brought hidden danger.In addition because the tackifier skewness, the powder of some water-absorbing resins was because poor with the nonwoven fabrics bonding force when optical cable factory adopted wrapped or vertical bag to process optical cable, disperse out easily, the water stop function but also the meeting aggravating working environment of waterstop have not only been weakened, as bringing hidden danger to workers'health in the suction inlet.
Summary of the invention:
The present invention will overcome above-mentioned many deficiencies of the prior art, and a kind of Swelling Waterstop Using For Optical Cable is provided.
The present invention is achieved in that
A kind of Swelling Waterstop Using For Optical Cable, its base material is a nonwoven fabrics, it is characterized in that this nonwoven fabrics is provided by cylinder, by the dipping of pre-polymerization liquid, carries out in the drying tunnel on-site crosslinkedly then in reaction, promptly obtains Swelling Waterstop Using For Optical Cable; Wherein, this pre-polymerization liquid consisting of by weight::
Acrylic acid 40-60 part, NaOH 20-40 part, 3 parts of acrylamides, 3 parts of hydroxyethyl methylacrylates, potassium persulfate 0.1-0.2 part, 130 parts in water, 0.1 part of crosslinking chemical, 0.2 part in surfactant.
The method for making of this pre-polymerization liquid is: NaOH is joined in 130 parts of deionized waters dissolve; slow dropwise addition of acrylic acid; the N-process system temperature will be lower than 40 ℃, adds 3 parts of acrylamides again; 3 parts of base hydroxy-ethyl acrylates; potassium persulfate heats to 60 ℃, under the nitrogen protection; polymerization is more than 4 hours, adds crosslinking chemical and surfactant again and stirs and promptly get pre-polymerization liquid.
This reaction drying tunnel is an electrical heating reaction drying tunnel.
This reaction drying tunnel is a far infrared reaction drying tunnel.
The mat said structure, advantage of the present invention is:
1. pre-polymerization liquid of the present invention comprises multiple acrylic acid monomers and each analog assistant, guarantee that it has higher water absorbing capacity and rate of water absorption to satisfy the suction requirement of waterstop after on-site crosslinked, the effect of coagent is to make polymkeric substance have enough surface areas to reach higher rate of water absorption.
2. nonwoven fabrics of the present invention is provided by cylinder, dipping (size of liquid absorption is regulated by the pressure between cylinder) by pre-polymerization liquid, again by far reaction drying tunnel (also can pass through Electric heating), in drying tunnel, carry out on-site crosslinkedly, promptly obtain the extraordinary expansion water strip of optical cable.
3. the present invention has saved a lot of costs especially owing to adopt serialization production to cut the independent production process of super absorbent resin, has avoided the impurity attachment issue in the original water-absorbing resin bonding process simultaneously.Because employing is on-site crosslinked, water absorbent polymer has been avoided the dry linting problem of traditional waterstop with nonwoven fabric base interband fluid-tight engagement.
Embodiment:
Pre-polymerization liquid is formed (by weight): acrylic acid 40-60 part, NaOH 20-40 part, 3 parts of acrylamides, 3 parts of hydroxyethyl methylacrylates, potassium persulfate 0.1-0.2 part, 130 parts in water, 0.1 part of crosslinking chemical, 0.2 part in surfactant.
The method for making of pre-polymerization liquid is: NaOH is joined in 130 parts of deionized waters dissolve; slow dropwise addition of acrylic acid; the N-process system temperature will be lower than 40 ℃; add 3 parts of acrylamides again, 3 parts of hydroxyethyl methylacrylates, potassium persulfate; heat to 60 ℃; under the nitrogen protection, polymerization is more than 4 hours, adds crosslinking chemical and surfactant again and stirs and promptly get pre-polymerization liquid.
Embodiment specifically is listed as follows: (unit: part)
| Embodiment | Acrylic acid | NaOH | Potassium persulfate | 5min expansion height (mm) |
| 1 | 40 | 20 | 0.1 | 3.0 |
| 2 | 40 | 30 | 0.1 | 2.5 |
| 3 | 40 | 40 | 0.1 | 3.5 |
| 4 | 50 | 20 | 0.15 | 6.5 |
| 5 | 50 | 30 | 0.15 | 7.5 |
| 6 | 50 | 40 | 0.15 | 4.0 |
| 7 | 60 | 20 | 0.2 | 5.0 |
| 8 | 60 | 30 | 0.2 | 8.0 |
| 9 | 60 | 40 | 0.2 | 7.5 |
The technology of this waterstop is that nonwoven fabrics is provided by cylinder, dipping (size of liquid absorption is regulated by the pressure between cylinder) by pre-polymerization liquid, reaction drying tunnel by far infrared (or electrical heating) again carries out on-site crosslinkedly in drying tunnel, promptly obtains the extraordinary expansion water strip of optical cable.
Claims (4)
1. Swelling Waterstop Using For Optical Cable, its base material is a nonwoven fabrics, it is characterized in that this nonwoven fabrics is provided by cylinder, by the dipping of pre-polymerization liquid, carries out on-site crosslinkedly then in the reaction drying tunnel, promptly obtains Swelling Waterstop Using For Optical Cable; Wherein, this pre-polymerization liquid consisting of by weight:
Acrylic acid 40-60 part, NaOH 20-40 part, 3 parts of acrylamides, 3 parts of hydroxyethyl methylacrylates, potassium persulfate 0.1-0.2 part, 130 parts in water, 0.1 part of crosslinking chemical, 0.2 part in surfactant.
2. Swelling Waterstop Using For Optical Cable according to claim 1; the method for making that it is characterized in that this pre-polymerization liquid is: NaOH is joined in 130 parts of deionized waters dissolve; slow dropwise addition of acrylic acid, the N-process system temperature will be lower than 40 ℃, adds 3 parts of acrylamides again; 3 parts of hydroxyethyl methylacrylates; potassium persulfate heats to 60 ℃, under the nitrogen protection; polymerization is more than 4 hours, adds crosslinking chemical and surfactant again and stirs and promptly get pre-polymerization liquid.
3. Swelling Waterstop Using For Optical Cable according to claim 1 and 2 is characterized in that this reaction drying tunnel is an electrical heating reaction drying tunnel.
4. Swelling Waterstop Using For Optical Cable according to claim 1 and 2 is characterized in that this reaction drying tunnel is a far infrared reaction drying tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101079309A CN100392461C (en) | 2003-10-16 | 2003-10-16 | Expansion water blocking tape for optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101079309A CN100392461C (en) | 2003-10-16 | 2003-10-16 | Expansion water blocking tape for optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1607413A CN1607413A (en) | 2005-04-20 |
| CN100392461C true CN100392461C (en) | 2008-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101079309A Expired - Fee Related CN100392461C (en) | 2003-10-16 | 2003-10-16 | Expansion water blocking tape for optical cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN100392461C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575374C (en) * | 2008-02-29 | 2009-12-30 | 厦门大学 | A kind of preparation method of acrylic acid series semi-interpenetration network composite high water absorption resin |
| CN101498078B (en) * | 2009-02-27 | 2011-07-06 | 俞飞 | Non-powder water swelling nonwoven fabric and production method thereof |
| CN102053321B (en) * | 2009-11-10 | 2012-11-21 | 上海鸿辉光通材料有限公司 | Thermal expansion water-blocking filling paste for optical cables and preparation method thereof |
| CN102516694B (en) * | 2011-11-24 | 2013-07-31 | 无锡江南电缆有限公司 | Preparation method for semiconductive waterproofing tape of high-voltage direct-current cable |
| CN102522149B (en) * | 2011-12-07 | 2014-03-19 | 常熟市慧丰塑料制品有限公司 | Composite metal water blocking tape |
| CN102592732B (en) * | 2012-03-22 | 2013-12-04 | 广州岭南电缆股份有限公司 | Water resistant high-voltage cable and production method thereof |
| CN108490557B (en) * | 2018-02-28 | 2020-10-30 | 江苏南方通信科技有限公司 | Dry type water blocking material filling process of high-resistance tipping tube |
| CN108708171B (en) * | 2018-03-16 | 2024-02-27 | 南通赛博通信有限公司 | Novel water-blocking yarn surface treatment process for optical cable |
| CN109308955B (en) * | 2018-10-22 | 2024-04-26 | 武汉纺织大学 | Water-absorbing expansion type water-blocking tape for optical cable and preparation method thereof |
| CN115652635A (en) * | 2022-10-29 | 2023-01-31 | 武汉纺织大学 | Fabric with high waterproof, flame-retardant and camouflage functions and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282252Y (en) * | 1996-12-25 | 1998-05-20 | 温科 | Expanding water resisting rope used in cable and optical cable |
| CN1245902A (en) * | 1999-08-06 | 2000-03-01 | 吴江妙都光缆有限公司 | Layer-twisted semi-dry type cable-core optical cable |
| CN1349228A (en) * | 2001-11-26 | 2002-05-15 | 湖北省化学研究所 | High-hydroscopicity expanding water-blocking yarn for optical cable and electric cable |
| CN1434095A (en) * | 2003-02-14 | 2003-08-06 | 武汉二十一世纪化工材料有限公司 | Water-resisting material for communication optical cable and preparation method thereof |
-
2003
- 2003-10-16 CN CNB2003101079309A patent/CN100392461C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282252Y (en) * | 1996-12-25 | 1998-05-20 | 温科 | Expanding water resisting rope used in cable and optical cable |
| CN1245902A (en) * | 1999-08-06 | 2000-03-01 | 吴江妙都光缆有限公司 | Layer-twisted semi-dry type cable-core optical cable |
| CN1349228A (en) * | 2001-11-26 | 2002-05-15 | 湖北省化学研究所 | High-hydroscopicity expanding water-blocking yarn for optical cable and electric cable |
| CN1434095A (en) * | 2003-02-14 | 2003-08-06 | 武汉二十一世纪化工材料有限公司 | Water-resisting material for communication optical cable and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1607413A (en) | 2005-04-20 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huzhou Joysun Electric Co. Ltd. Assignor: Shanghai Electric Cable Research Institute Contract fulfillment period: 2008.6.24 to 2013.6.23 Contract record no.: 2008330000316 Denomination of invention: Expansion water blocking tape for optical cable Granted publication date: 20080604 License type: Exclusive license Record date: 20080829 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.6.24 TO 2013.6.23 Name of requester: HUZHOU JIUSHENG ELECTRIC CO., LTD. Effective date: 20080829 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20191016 |