CN105131391A - Polyethylene material for optical cable - Google Patents
Polyethylene material for optical cable Download PDFInfo
- Publication number
- CN105131391A CN105131391A CN201510553843.9A CN201510553843A CN105131391A CN 105131391 A CN105131391 A CN 105131391A CN 201510553843 A CN201510553843 A CN 201510553843A CN 105131391 A CN105131391 A CN 105131391A
- Authority
- CN
- China
- Prior art keywords
- parts
- density polyethylene
- flow rate
- melt flow
- high density
- 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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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses a polyethylene material for an optical cable. The polyethylene material is prepared from, by weight, 50 parts of semi-finished foaming materials, 50 parts of first high density polyethylene and 1 part of nucleating master batches through physical foaming; the semi-finished foaming materials are prepared from, by weight, 30 parts of low density polyethylene with the melt flow rate of 0.03-0.09 g/10 min, 40 parts of the high density polyethylene with the melt flow rate of 1.8-3.2 g/10 min, 30 parts of second high density polyethylene with the melt flow rate of 5-9 g/10 min and 15 parts of micron-grade superfine calcium carbonate. The polyethylene material can be easily dispersed to be even, the bad influences of usage of multiple auxiliaries on the final performance of plastic are eliminated, the material can be closely combined with a wrapping layer of plastic film, and the pulling resisting and side pressure resisting strength of a filling rope is improved.
Description
Technical field
The present invention relates to cable material, be specifically related to a kind of polythene material for optical cable.
Background technology
Existing optical cable gasket for packing majority is the solid cord that high-density Insulation Material is extruded, because hardness is high, the squeeze be subject in machine when being stranding into cable core altogether with other element is larger, limit high-speed production, and it easily extrudes other elements such as the Loose tube of fiber unit, cable core is out of shape, affects the roundness of optical cable.Secondly, solid cord raw material dosage is large, and manufacturing cost is high, and himself weight is large, causes optical cable transportation cost higher.In addition solid cord hardness is large, and external force resistance resiliency is poor, and protected effect is not good enough.For the deficiency of optical cable hatching solid rope; foaming filling rope for optical cables arises at the historic moment; it is extensively concerned because of advantages such as raw materials cost are low, protected effect is good, lightweight; but it is relative with the report that market is applied less about its manufacture method at present; and the data of such gasket for packing particulate material cans be counted on one's fingers especially, and there are problems.As CN101382626A discloses the patent of invention of one " optical cable foaming packing gasket granule material and production method thereof ", in this patented technology, the raw material of packing gasket granule material has Low Density Polyethylene, high density polyethylene(HDPE), polypropylene, polyethylene wax, stearic acid, calcium stearate and tetrapentaerythritol fat etc., its component is more, proportional difference is larger, take trouble, not easily disperse, more difficultly to mix; And due to each component unit price all costly, manufacturing cost still quite has pressure; In addition, the interpolation of multiple auxiliary agent uses and easily produces detrimentally affect to the final performance of product, causes goods air entrapment skewness, and can leave small molecules resistates in reproduced goods, affects the mechanical property of goods.
Summary of the invention
The object of this invention is to provide a kind of polythene material for optical cable, it takes conveniently, saves manpower; Each component ratio is comparatively close, is easy to be uniformly dispersed; Only containing polyvinyl resin, calcium carbonate and nucleation masterbatch in raw material, decrease the use of multiclass auxiliary agent to the detrimentally affect of the final performance of plastics; The interpolation of certain proportion calcium carbonate effectively reduces the cost of material; Foaming packing gasket body obtained by this particle is as buried layer; can combine closely with plastics film surrounding layer; thus make the filling degree of the degree of drying of gasket for packing and air more constant, increase tension, the lateral compressive strength of gasket for packing, be more of value to its provide protection to light wave guide.
For achieving the above object, the technical solution used in the present invention is: a kind of polythene material for optical cable, is obtained through physical blowing by the component of following weight part:
Foamed material work in-process 50 parts,
High density polyethylene(HDPE) (first) 50 parts,
Nucleation masterbatch 1 part;
Described foamed material work in-process are made up of the component of following weight part:
Melt flow rate (MFR) is the Low Density Polyethylene 30 parts of 0.03 ~ 0.09g/10min,
Melt flow rate (MFR) is the high density polyethylene(HDPE) (first) 40 parts of 1.8 ~ 3.2g/10min,
Melt flow rate (MFR) is the high density polyethylene(HDPE) (second) 30 parts of 5 ~ 9g/10min,
15 parts, micron-class superfine calcium carbonate.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
1. the present invention is applied to the foaming packing gasket of optical cable, hardness is moderate, rope body is softer, can large angle torsion and indeformable, but rope body has again certain hardness, own form, the coefficient of expansion can be kept to a certain extent little when being subject to External Force Acting, other deformed element around not easily making in cabling process, ensure cable core roundness, and owing to containing multiple fine and closely woven uniform bubble in inside, himself hardness ratio entity rope is reduced greatly, be that other element is stranding into the squeeze be subject at device interior when cable core is extruded altogether less, can high-speed production; Secondly, because foaming packing gasket density is little, light specific gravity, make the weight of unit length optical cable finished product, the transportation cost of optical cable can be reduced; Again, foaming packing gasket material consumption is few, manufacturing cost can be reduced, calcium carbonate unit price is relatively low, significantly reduce cost (although the use of calcium carbonate is in the weight that adds somewhat to gasket for packing self, but because gasket for packing in this patent is foaming packing gasket, therefore compare entity rope still have greater advantage in weight); Constituent species is relatively less, and its unit price is on the low side compared to each analog assistant, and thus overall manufacturing cost has greater advantage; Each proportion of composing difference is less, is convenient to take, and saves artificial.
2. the present invention is applied to the foaming packing gasket of optical cable, and component ratio proportion difference is less, is convenient to take, and manual operation error is less, is beneficial to the stability ensureing quality product during batch production; Secondly, not containing each analog assistant, the use of each analog assistant easily produces detrimentally affect to the final performance of product, causes goods air entrapment skewness, and can leave small molecules resistates in goods, affect Mechanical Properties of Products.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment: a kind of foaming packing gasket being applied to optical cable, described foaming packing gasket granule material is obtained through physical blowing by the component of following weight part:
Foamed material work in-process 50 parts,
High density polyethylene(HDPE) (first) 50 parts,
Nucleation masterbatch 1 part;
Described foamed material work in-process are made up of the component of following weight part:
Melt flow rate (MFR) is the Low Density Polyethylene 30 parts of 0.03 ~ 0.09g/10min,
Melt flow rate (MFR) is the high density polyethylene(HDPE) (first) 40 parts of 1.8 ~ 3.2g/10min,
Melt flow rate (MFR) is the high density polyethylene(HDPE) (second) 30 parts of 5 ~ 9g/10min,
15 parts, micron-class superfine calcium carbonate;
Above-mentioned foamed material work in-process melt flow rate (MFR) is 0.65 ± 0.20g/10min.
The preparation technology of the above-mentioned polythene material for optical cable, comprises the following steps:
Step one, be the Low Density Polyethylene 30 parts of 0.03 ~ 0.09g/10min by melting index, the melting index high density polyethylene(HDPE) (first) 40 parts that is 1.8 ~ 3.2g/10min, the melting index high density polyethylene(HDPE) (second) 30 parts that is 5 ~ 9g/10min, calcium carbonate superfine powder 15 parts be positioned over high-speed mixer and mixing and evenly form mixture;
Step 2, the described mixture of step one is sent in twin screw extruder, multistagely from low to high to heat extruder barrel temperature 180 ~ 230 DEG C, to be extruded into Ф 2.5mm under head temperature 230 DEG C of conditions rectangular;
Step 3, by step 2 described rectangular through water cooling tank cooling after again through blower fan dry, then, be cut into long 3mm, Ф 2.5mm small column grain as foamed material work in-process;
Step 4, by foamed material work in-process described in step 3 50 parts, high density polyethylene(HDPE) (first) 50 parts and nucleation masterbatch 1 part, by high mixer three mixed and obtain described foaming packing gasket granule material.
Step 5, described packing gasket granule material are in an extruder through heating and melting, nitrogen is injected wherein under a certain pressure simultaneously, discharge gas through decompression again, thus generate the uniform bubble of combining closely with internal layer, form the polyethylene foam gasket for packing body buried layer that frothing percentage is 10 ~ 80%;
Step 6, described polyethylene foam gasket for packing body buried layer are at the temperature of setting after high speed extrusion, and its skin, after PBT resin is coated, forms the polyethylene foam gasket for packing that buried layer and coating layer are combined closely.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (2)
1. for a polythene material for optical cable, it is characterized in that: obtained through physical blowing by the component of following weight part:
Foamed material work in-process 50 parts,
High density polyethylene(HDPE) (first) 50 parts,
Nucleation masterbatch 1 part;
Described foamed material work in-process are made up of the component of following weight part:
Melt flow rate (MFR) is the Low Density Polyethylene 30 parts of 0.03 ~ 0.09g/10min,
Melt flow rate (MFR) is the high density polyethylene(HDPE) (first) 40 parts of 1.8 ~ 3.2g/10min,
Melt flow rate (MFR) is the high density polyethylene(HDPE) (second) 30 parts of 5 ~ 9g/10min,
15 parts, micron-class superfine calcium carbonate.
2. the polythene material for optical cable according to claim 1, is characterized in that: described foamed material work in-process melt flow rate (MFR) is 0.65 ± 0.20g/10min.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536006.1A CN103035330B (en) | 2012-12-13 | 2012-12-13 | Be applied to foaming packing gasket and the preparation technology thereof of optical cable |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210536006.1A Division CN103035330B (en) | 2012-12-13 | 2012-12-13 | Be applied to foaming packing gasket and the preparation technology thereof of optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105131391A true CN105131391A (en) | 2015-12-09 |
Family
ID=48022138
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510553956.9A Active CN105367865B (en) | 2012-12-13 | 2012-12-13 | The preparation process of low-expansion coefficient polyethylene foam gasket for packing |
| CN201210536006.1A Active CN103035330B (en) | 2012-12-13 | 2012-12-13 | Be applied to foaming packing gasket and the preparation technology thereof of optical cable |
| CN201510553843.9A Pending CN105131391A (en) | 2012-12-13 | 2012-12-13 | Polyethylene material for optical cable |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510553956.9A Active CN105367865B (en) | 2012-12-13 | 2012-12-13 | The preparation process of low-expansion coefficient polyethylene foam gasket for packing |
| CN201210536006.1A Active CN103035330B (en) | 2012-12-13 | 2012-12-13 | Be applied to foaming packing gasket and the preparation technology thereof of optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN105367865B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957637A (en) * | 2015-03-10 | 2016-09-21 | 蒋菊生 | Manufacture method of optical and electric composite cable with special-shaped filling ropes |
| CN108008507A (en) * | 2017-11-24 | 2018-05-08 | 中广核拓普（四川）新材料有限公司 | Optical cable high-foaming gasket for packing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1741199A (en) * | 2004-08-26 | 2006-03-01 | 深圳市联嘉祥电线电缆实业有限公司 | Method for producing physical foamed insulation material of coaxle cable |
| CN101012323A (en) * | 2007-02-01 | 2007-08-08 | 徐晓冰 | Polythene physics foaming material and preparing method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098761C (en) * | 1998-03-31 | 2003-01-15 | 四川联合大学 | Preparation of foamed insulating polyethylene material for coaxial cable |
| JP4003116B2 (en) * | 2001-11-28 | 2007-11-07 | 株式会社フジミインコーポレーテッド | Polishing composition for magnetic disk substrate and polishing method using the same |
| JP4175247B2 (en) * | 2003-11-25 | 2008-11-05 | 日立電線株式会社 | Resin composition and high-frequency coaxial cable using the same |
| CN201117366Y (en) * | 2007-11-16 | 2008-09-17 | 成都亨通光通信有限公司 | Optical cable possessing foaming filling element |
| CN101701093B (en) * | 2009-11-30 | 2011-09-07 | 苏州亨利通信材料有限公司 | Special material for color identification of special color polyolefin optical cable |
-
2012
- 2012-12-13 CN CN201510553956.9A patent/CN105367865B/en active Active
- 2012-12-13 CN CN201210536006.1A patent/CN103035330B/en active Active
- 2012-12-13 CN CN201510553843.9A patent/CN105131391A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1741199A (en) * | 2004-08-26 | 2006-03-01 | 深圳市联嘉祥电线电缆实业有限公司 | Method for producing physical foamed insulation material of coaxle cable |
| CN101012323A (en) * | 2007-02-01 | 2007-08-08 | 徐晓冰 | Polythene physics foaming material and preparing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105367865A (en) | 2016-03-02 |
| CN105367865B (en) | 2018-10-30 |
| CN103035330B (en) | 2015-08-26 |
| CN103035330A (en) | 2013-04-10 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |