CN105086062A - Optical fiber sheath material with resistance to environmental stress cracking - Google Patents

Optical fiber sheath material with resistance to environmental stress cracking Download PDF

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Publication number
CN105086062A
CN105086062A CN201510476168.4A CN201510476168A CN105086062A CN 105086062 A CN105086062 A CN 105086062A CN 201510476168 A CN201510476168 A CN 201510476168A CN 105086062 A CN105086062 A CN 105086062A
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China
Prior art keywords
parts
optical fiber
environmental stress
sheath material
magnesium hydroxide
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Pending
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CN201510476168.4A
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Chinese (zh)
Inventor
孟亮
周清华
姚磊
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Anhui Telecom Equipment Trading Industry Co Ltd
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Anhui Telecom Equipment Trading Industry Co Ltd
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Priority to CN201510476168.4A priority Critical patent/CN105086062A/en
Publication of CN105086062A publication Critical patent/CN105086062A/en
Pending legal-status Critical Current

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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
    • 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
    • C08J9/06—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 chemical blowing agent
    • C08J9/10—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 chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • 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
    • C08L2207/066—LDPE (radical process)

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses an optical fiber sheath material with resistance to environmental stress cracking. The optical fiber sheath material with resistance to the environmental stress cracking is prepared from, by weight, 50-55 parts of low-density polyethylene, 13-15 parts of EVA resin, 9-12 parts of nylon 6, 14-16 parts of magnesium hydrate, 0.6-0.8 part of sodium methylene bis-naphthalene sulfonate, 1.3-2 parts of titanate coupling agent 102, 5-8 parts of organic silicone, 3-5 parts of organic montmorillonite, 2-4 parts of vinyl acetate, 3-4 parts of anti-aging agent RD, 3-4 parts of lead oxide, 3-4 parts of octamethyl cyclotetrasiloxane, 4-5 parts of talcum powder and an adequate amount of deionized water. The sheath material can be applied to protection of outdoor optical fibers, and the sheath material is capable of resisting severe environment, not prone to cracking, long in service life and worthy of popularization.

Description

A kind of environmental stress crack resistance optical fiber jacket material
Technical field
The present invention relates to optical fiber jacket material technical field, particularly relate to a kind of environmental stress crack resistance optical fiber jacket material and preparation method thereof.
Background technology
Along with the develop rapidly of data communication industry, optical fiber is just widely adopted as the carrier of data transmission.The laying form of optical fiber is buried and built on stilts, and along with the transformation of city netting twine, major part goes underground.In order to prevent the optical fiber of underground, optical cable suffers insect bite or corrosion, and the sheath material of optical fiber and optical cable arises at the historic moment.Current optical fiber, protecting sleeve of optical cable mainly use polyolefine, have light weight, flexural strength is large, frictional coefficient is little, good seal performance, the feature such as corrosion-resistant, but this tubing also exists extremely incendive shortcoming.Initial in order to improve the flame retardant properties of sheath protecting materials; general interpolation contains the fire retardant of halogen; these type of fiber optic cables can release a large amount of smog and hydrogen halide in combustion; people is made to be choked to death in fire; simultaneously comparatively large to plant and instrument corrodibility, therefore the development and application of low cigarette, low halogen and bittern-free flame-proof material has been one of developing direction of domestic and international fiber optic cables and other field.
Inorganic no-halogen fire retardant has stronger polarity and wetting ability, and polyolefine is non-polar material, poor compatibility between the two, interface is difficult to form good combination and bonding, particularly magnesium hydroxide magnesium hydroxide has excellent fire-retardant, press down cigarette, resistance is dripped, antiacid several functions such as grade, be widely used, but magnesium hydroxide polarity is strong, different from resin thermal expansivity, expand with heat and contract with cold during machine-shaping and cause two-phase interface to form microcrack, this will cause the mechanical property of material, water resistance, the decline of insulating property, so surface modification must be carried out to magnesium hydroxide, make magnesium hydroxide in polyolefine, have good over-all properties, have at processing temperatures in good mobility and use temperature and have high intensity and toughness concurrently, and do not change the shock resistance of polyolefine section bar.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of environmental stress crack resistance optical fiber jacket material and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of environmental stress crack resistance optical fiber jacket material, is made up of the raw material of following weight part: Low Density Polyethylene 50-55, EVA resin 13-15, nylon 69-12, magnesium hydroxide 14-16, sodium methylene bis-naphthalene sulfonate 0.6-0.8, titanate coupling agent 1021.3-2, organosilicon 5-8, organo montmorillonite 3-5, vinyl acetate 2-4, anti-aging agent RD 3-4, plumbous oxide 3-4, octamethylcyclotetrasiloxane 3-4, talcum powder 4-5, deionized water are appropriate;
Described a kind of environmental stress crack resistance optical fiber jacket material, be made up of following concrete steps:
(1) 10-15min is processed after magnesium hydroxide drying with sodium methylene bis-naphthalene sulfonate colloid mixture mill, again by titanate coupling agent 102 with after appropriate alcohol dilution, on spray magnesium hydroxide powder after treatment, at room temperature stir 20-30min in low speed kneader, mix rear raised temperature to 70-90 ° of C, organosilicon and organo montmorillonite is slowly added under 800-1000 rev/min of rotating speed, for subsequent use after naturally cooling after stirring 40-60min;
(2) first Low Density Polyethylene, EVA resin and nylon 6 is added in mixing roll, mixing 6-12min at 100-120 ° of C temperature, then add Cellmic C 121 and urea mixing and stirring is for subsequent use;
(3) vinyl acetate is added the deionized water dilution of 2-3 times amount, then add plumbous oxide and talcum powder, supersound process 6-10min under 90W, filter post-drying and add the mixing of all the other remaining components again, stir in low-speed mixer;
(4) the above-mentioned raw material obtained in steps is thrown in twin screw extruder carry out extruding pelletization, the temperature of twin screw extruder is set as a district 145-165 ° C, two district 150-170 ° C, three district 140-160 ° C, head 155-165 ° C, machine mould 170-190 ° of C, after pellet drying, screening, packaging.
Advantage of the present invention is: the present invention adopts titanate coupling agent process magnesium hydroxide to form titanic acid ester unimolecular film on its surface, magnesium hydroxide is made to obtain good dispersiveness, wetting angle and coupling effect, reduce surface energy, increase consistency, the organosilicon added and organo montmorillonite have the effect of cooperative flame retardant, decrease the loading level of magnesium hydroxide, the mechanical property of material is improved while ensureing oxygen index, and add its consistency in polyolefine, the process of filling surface vinyl acetate strengthens consistency in polyolefine and easily disperse, its shock proof performance can not be changed, polyethylene by with EVA resin, nylon 6 compound is mixing and add the hardness that whipping agent fretting map greatly improves polyolefin jacket material, intensity and wear resisting property, the plumbous oxide added and talcum powder effectively can improve the performance of the aspects such as the cold-resistant freeze proof high temperature resistance of sheath, not easy to crack in the presence of a harsh environment, sheath material of the present invention can be applied to the protection of outdoor optical fiber, rugged environment can be resisted, and it is not easy to crack, long service life, be worthy to be popularized.
Embodiment
A kind of environmental stress crack resistance optical fiber jacket material, is made up of the raw material of following weight part (kilogram): Low Density Polyethylene 50, EVA resin 13, nylon 69, magnesium hydroxide 14, sodium methylene bis-naphthalene sulfonate 0.6, titanate coupling agent 1021.3, organosilicon 5, organo montmorillonite 3, vinyl acetate 2, anti-aging agent RD 3, plumbous oxide 3, octamethylcyclotetrasiloxane 3, talcum powder 4, deionized water are appropriate;
Described a kind of environmental stress crack resistance optical fiber jacket material, be made up of following concrete steps:
(1) 10min is processed after magnesium hydroxide drying with sodium methylene bis-naphthalene sulfonate colloid mixture mill, again by titanate coupling agent 102 with after appropriate alcohol dilution, on spray magnesium hydroxide powder after treatment, at room temperature stir 20min in low speed kneader, mix rear raised temperature to 70 ° C, organosilicon and organo montmorillonite is slowly added under 800 revs/min of rotating speeds, for subsequent use after naturally cooling after stirring 40min;
(2) first Low Density Polyethylene, EVA resin and nylon 6 is added in mixing roll, mixing 6min at 100 ° of C temperature, then add Cellmic C 121 and urea mixing and stirring is for subsequent use;
(3) vinyl acetate is added the deionized water dilution of 2 times amount, then add plumbous oxide and talcum powder, supersound process 6min under 90W, filter post-drying and add the mixing of all the other remaining components again, stir in low-speed mixer;
(4) thrown in twin screw extruder by the above-mentioned raw material obtained in steps and carry out extruding pelletization, the temperature of twin screw extruder is set as 145 °, district C, two 150 °, district C, three 140 °, district C, head 155 ° of C, machine mould 170 ° of C, after pellet drying, screening, packaging.
Carry out performance test to optical fiber jacket prepared by embodiment, test result is as follows: breaking tenacity is 12.6Mpa, and elongation at break is 175%, and limiting oxygen index(LOI) is 38%, and volume specific resistance is 1.2 × 10 14Ω .m, tensile strength retention rate (158 ° of C, 168h) is 78%, and reserved elongation at break (158 ° of C, 168h) is 80%.

Claims (2)

1. an environmental stress crack resistance optical fiber jacket material, it is characterized in that, be made up of the raw material of following weight part: Low Density Polyethylene 50-55, EVA resin 13-15, nylon 69-12, magnesium hydroxide 14-16, sodium methylene bis-naphthalene sulfonate 0.6-0.8, titanate coupling agent 1021.3-2, organosilicon 5-8, organo montmorillonite 3-5, vinyl acetate 2-4, anti-aging agent RD 3-4, plumbous oxide 3-4, octamethylcyclotetrasiloxane 3-4, talcum powder 4-5, deionized water are appropriate.
2. a kind of environmental stress crack resistance optical fiber jacket material according to claim 1, is characterized in that, be made up of following concrete steps:
(1) 10-15min is processed after magnesium hydroxide drying with sodium methylene bis-naphthalene sulfonate colloid mixture mill, again by titanate coupling agent 102 with after appropriate alcohol dilution, on spray magnesium hydroxide powder after treatment, at room temperature stir 20-30min in low speed kneader, mix rear raised temperature to 70-90 ° of C, organosilicon and organo montmorillonite is slowly added under 800-1000 rev/min of rotating speed, for subsequent use after naturally cooling after stirring 40-60min;
(2) first Low Density Polyethylene, EVA resin and nylon 6 is added in mixing roll, mixing 6-12min at 100-120 ° of C temperature, then add Cellmic C 121 and urea mixing and stirring is for subsequent use;
(3) vinyl acetate is added the deionized water dilution of 2-3 times amount, then add plumbous oxide and talcum powder, supersound process 6-10min under 90W, filter post-drying and add the mixing of all the other remaining components again, stir in low-speed mixer;
(4) the above-mentioned raw material obtained in steps is thrown in twin screw extruder carry out extruding pelletization, the temperature of twin screw extruder is set as a district 145-165 ° C, two district 150-170 ° C, three district 140-160 ° C, head 155-165 ° C, machine mould 170-190 ° of C, after pellet drying, screening, packaging.
CN201510476168.4A 2015-08-06 2015-08-06 Optical fiber sheath material with resistance to environmental stress cracking Pending CN105086062A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108485250A (en) * 2018-05-03 2018-09-04 南京思甲宁新材料科技有限公司 For the sheath material and preparation method of cable

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101950044A (en) * 2010-09-28 2011-01-19 江西大圣塑料光纤有限公司 Method for preparing halogen-free smoke-suppressant and flame-retardant plastic optical fiber sheath
CN104292601A (en) * 2014-09-25 2015-01-21 江苏金聚合金材料有限公司 Oil-proof low-smoke and non-halogen fire-retardant cable material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101950044A (en) * 2010-09-28 2011-01-19 江西大圣塑料光纤有限公司 Method for preparing halogen-free smoke-suppressant and flame-retardant plastic optical fiber sheath
CN104292601A (en) * 2014-09-25 2015-01-21 江苏金聚合金材料有限公司 Oil-proof low-smoke and non-halogen fire-retardant cable material and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
欧育湘等编著: "《阻燃剂——性能、制造及应用》", 30 April 2006, 化学工业出版社化学与应用化学出版中心 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108485250A (en) * 2018-05-03 2018-09-04 南京思甲宁新材料科技有限公司 For the sheath material and preparation method of cable

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Application publication date: 20151125