CN106751033A - A kind of Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion and preparation method thereof - Google Patents
A kind of Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion and preparation method thereof Download PDFInfo
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- CN106751033A CN106751033A CN201611239570.1A CN201611239570A CN106751033A CN 106751033 A CN106751033 A CN 106751033A CN 201611239570 A CN201611239570 A CN 201611239570A CN 106751033 A CN106751033 A CN 106751033A
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- ethylene propylene
- propylene diene
- diene rubber
- shrink tube
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- 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
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- 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
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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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A kind of Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion, it is made up of following component in parts by weight：100 parts of ethylene propylene diene rubber；3 10 parts of crosslinking agent；15 parts of age resistor；0.5 5 parts of coupling agent；20 40 parts of reinforced filling；20 50 parts of paraffin oil；20 40 parts of fire retardant metal phosphinate；Described ethylene propylene diene rubber is the ethylene propylene copolymer containing the Third monomer containing unsaturated double-bond that can provide crosslinking sites, and ethylene contents are 40~70% in the copolymer, and Mooney viscosity value is 45~90, contains controllable long chain branching.Ethylene propylene diene rubber tubing of the present invention, it is easy to be expanded to 4 times and more than, with elongation at break higher, oxygen index (OI) higher.
Description
Technical field
The present invention relates to a kind of ethylene propylene diene rubber tubing, it is easy to be expanded to 4 times and more than, and can guarantee that environmental protection, should
Material has an elongation at break higher, oxygen index (OI) higher, and material surface is smooth and softness.
Background technology
From 1986, start to occur in that to polybrominated diphenyl ether retardant in flame retardant area and apply this based flame retardant
Toxicity and the dispute of the influence to environment that fire-retardant high polymer is produced in burning and high temperature degradation, European commission pass through
Prohibit the use of the motion of the bromide fire retardants such as penta-BDE (PBDPO), octabromodiphenyl ether (OBDPO).Most finally 2003
On January 27, in formally discloses《Waste electronic andelectrical equipment is instructed》(WEEE-200296EC) and《On electric
Some Hazardous Substances Directives are prohibitted the use of in equipment》(RoHS-200295EC).China also promulgated in 2006《E-mail
Breath contamination of products control management method》(RoHS of China) instruction.
At present, the halogen-free flame retardants of in the market is roughly divided into inorganic hydroxide, organophosphor nitrogen expansion type and organosilicon three
Individual series.And inorganic hydroxide series halogen-free flame retardants flame retardant effect is poor, addition is big, and the mechanical property to material is special
It is that elongation at break is influenceed than larger.
Ethylene propylene diene rubber is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon, due to its superior oxytolerant
The performances such as change, ozone-resistant and erosion-resistant ability, so being widely used in the industries such as automobile, electronic apparatus, these industries have
There are flame-retardancy requirements higher, so being related to the flame-retarded technology of ethylene propylene diene rubber has turned into the focus that people study.Chinese patent
CN200310106228.0 and CN200610116018.3 etc. disclose some related fire retardants and flame resistant method, but
It is that the fire resistance that can be reached with these methods is relatively low.
The content of the invention
The technical problem to be solved in the present invention is：Overcome existing ethylene propylene diene rubber cold shrink tube fire resistance it is low, fracture
The low defect of elongation, there is provided it is a kind of be easy to expansion Halogen Free Flame Retardant EPDM cold shrink tube, good flame retardation effect, with compared with
Elongation at break high, oxygen index (OI) higher, material surface is smooth and flexible nature.
In order to solve the above-mentioned technical problem, the present invention proposes following technical proposal：A kind of halogen-free flameproof three for being easy to expansion
First EP rubbers cold shrink tube, it is made up of following component in parts by weight：
100 parts of ethylene propylene diene rubber；
Crosslinking agent 3-10 parts；
Age resistor 1-5 parts；
Coupling agent 0.5-5 parts；
Reinforced filling 20-40 parts；
Paraffin oil 20-50 parts；
20-40 parts of fire retardant metal phosphinate；
Described ethylene propylene diene rubber is the ethylene-propylene containing the Third monomer containing unsaturated double-bond that can provide crosslinking sites
Copolymer, ethylene contents are 40~70% in the copolymer, and Mooney viscosity value is 45~90, contains controllable long chain branching；
Described crosslinking agent is the mixture of one or more in following material：Polyethylene glycol；Perbenzoic acid butyl ester；It is different
Propyl phenyl tert-butyl peroxide；Diisopropylbenzyl peroxide；Double (tert-butyl hydroperoxide isopropyl) benzene；Di-t-butyl peroxide
Compound；2,5- dimethyl -2, double (tert-butyl peroxy base) hexanes of 5-；2,5- dimethyl -2, double (tertiary butine crosses the base) -3- of 5-
Hexin；
Described age resistor is the mixture of one or more in following material：Zinc salt of 2 mercaptobenzimidazole；2,2,4- tri-
Methyl isophthalic acid, 2- dihyaroquinoline condensates；2,6 di tert butyl 4 methyl phenol styrenated phenol；2-mercaptobenzimidazole；
Described coupling agent is the one kind in following material：Silane coupler；Vinyl three (b- methoxy ethoxies) silane；
3- aminopropyl triethoxysilanes；γ-methacryloxypropyl trimethoxy silane；γ-mercapto propyl-triethoxysilicane
Alkane；VTES；N- (β-aminoethyl)-gamma-aminopropyl-triethoxy-silane；
Described reinforced filling is the mixture of one or more in following material：Firebrake ZB；Titanium oxide；Silica；Oxidation
Zinc；Magnesia；Silica；Carbon black；Magnesium hydroxide；Shepardite；Magnesium salt whisker；Basic magnesite；Aluminium hydroxide；
The viscosity of described paraffin oil（40℃）/ 10-6m2/s between 20-200, flash-point between 200-350 DEG C, density
Between 0.790-0.819 kg/L, ＜ -8 DEG C of pour point；
Described fire retardant metal phosphinate is hypo-aluminum orthophosphate or zinc hypophosphite, and the hypo-aluminum orthophosphate or zinc hypophosphite are micron
The particle of level.
In order to solve the above-mentioned technical problem, the present invention proposes following technical proposal：A kind of halogen-free flameproof three for being easy to expansion
The preparation method of first EP rubbers cold shrink tube, comprises the following steps：
Step 1：According to the weight proportion between each raw material, by the ethylene propylene diene rubber of corresponding weight, fire retardant metal hypophosphorous acid
Salt, coupling agent, reinforced filling, age resistor, paraffin oil are sequentially added in mill or banbury, and wherein coupling agent is needed with reinforcement
Filler is pre-processed, and mixing velocity is 5000 revs/min in homogenizer, and incorporation time is 20~50 points
Clock, in 5~30min is kneaded at 40~130 DEG C, obtains elastomeric compound；
Step 2：Elastomeric compound is placed in mill, crosslinking agent is added at room temperature, beat triangle bag 5-10 times, Halogen resistance is obtained
Combustion ethylene propylene diene monomer (EPDM) material；
Step 3：By 120 DEG C~200 DEG C of injection machine temperature, 5~40 minutes time was vulcanized, and vulcanization semi-finished product are obtained
Tubing；
Step 4：By special dilator, tubing is expanded to 4 times and above multiplying power, and the support of polypropylene material is put into centre
Bar, makes Halogen Free Flame Retardant EPDM cold shrink tube.
Compared with prior art, the present invention has following beneficial effect：The present invention is easy to the halogen-free flameproof ternary second of expansion
Third rubber cold shrink tube.Be easy to be expanded to 4 times and more than, and environmental protection is can guarantee that, with elongation at break higher, oxygen higher
Index, material surface is smooth and softness.
Specific embodiment
A kind of Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion, it is by following group in parts by weight
It is grouped into：
100 parts of ethylene propylene diene rubber；
Crosslinking agent 3-10 parts；
Age resistor 1-5 parts；
Coupling agent 0.5-5 parts；
Reinforced filling 20-40 parts；
Paraffin oil 20-50 parts；
20-40 parts of fire retardant metal phosphinate.
Described ethylene propylene diene rubber be the ethene containing the Third monomer containing unsaturated double-bond that can provide crosslinking sites-
Propylene copolymer, ethylene contents are 40~70% in the copolymer, and Mooney viscosity value is 45~90, contains controllable long-chain branch
Change.
Described crosslinking agent is the mixture of one or more in following material：Polyethylene glycol；Perbenzoic acid fourth
Ester；Cumenyl tert-butyl peroxide；Diisopropylbenzyl peroxide；Double (tert-butyl hydroperoxide isopropyl) benzene；Two tertiary fourths
Base peroxide；2,5- dimethyl -2, double (tert-butyl peroxy base) hexanes of 5-；2,5- dimethyl -2,5- is double, and (tertiary butine crosses base
) -3- hexins.
Described age resistor is the mixture of one or more in following material：Zinc salt of 2 mercaptobenzimidazole；2,2,
4- trimethyl -1,2- dihyaroquinoline condensates；2,6 di tert butyl 4 methyl phenol styrenated phenol；2- sulfydryl benzos
Imidazoles.
Described coupling agent is the one kind in following material：Silane coupler；Vinyl three (b- methoxy ethoxies) silicon
Alkane；3- aminopropyl triethoxysilanes；γ-methacryloxypropyl trimethoxy silane；γ-mercapto propyl triethoxy
Silane；VTES；N- (β-aminoethyl)-gamma-aminopropyl-triethoxy-silane.
Described reinforced filling is the mixture of one or more in following material：Firebrake ZB；Titanium oxide；Silica；
Zinc oxide；Magnesia；Silica；Carbon black；Magnesium hydroxide；Shepardite；Magnesium salt whisker；Basic magnesite；Aluminium hydroxide.
The viscosity of described paraffin oil（40℃）/ 10-6m2/s is between 20-200, and flash-point is close between 200-350 DEG C
Between degree 0.790-0.819 kg/L, ＜ -8 DEG C of pour point.
Described fire retardant metal phosphinate is hypo-aluminum orthophosphate or zinc hypophosphite, and the hypo-aluminum orthophosphate or zinc hypophosphite are
Micron-sized particle.
The preparation method of the described Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion, comprises the following steps：
Step 1：According to the weight proportion between each raw material, by the ethylene propylene diene rubber of corresponding weight, fire retardant metal hypophosphorous acid
Salt, coupling agent, reinforced filling, age resistor, paraffin oil are sequentially added in mill or banbury, and wherein coupling agent is needed with reinforcement
Filler is pre-processed, and mixing velocity is 5000 revs/min in homogenizer, and incorporation time is 20~50 points
Clock, in 5~30min is kneaded at 40~130 DEG C, obtains elastomeric compound；
Step 2：Elastomeric compound is placed in mill, crosslinking agent is added at room temperature, beat triangle bag 5-10 times, Halogen resistance is obtained
Combustion ethylene propylene diene monomer (EPDM) material；
Step 3：By 120 DEG C~200 DEG C of injection machine temperature, 5~40 minutes time was vulcanized, and vulcanization semi-finished product are obtained
Tubing；
Step 4：By special dilator, tubing is expanded to 4 times and above multiplying power, and PP is put into centre（Polypropylene）Material
Support bar, makes Halogen Free Flame Retardant EPDM cold shrink tube.
Embodiment one
By weight, by 100 parts of ethylene propylene diene rubber, 30 parts of fire retardant metal phosphinate, 3 parts of coupling agent, reinforced filling
40 parts, 2 parts of age resistor, 30 parts of paraffin oil are sequentially added in mill or banbury,（Wherein 30 parts of 3 parts of coupling agent and fire retardant
It is blended in height stirs machine, 3000 revs/min of rotating speed）, melting temperature is 120 degree, incorporation time 20-50 minutes；
Elastomeric compound is placed in mill, 3 parts of crosslinking agent is added at room temperature, beat triangle bag 5-10 times, halogen-free flameproof three is obtained
First EP rubbers material；
Using molding or injection moulding mode, vulcanized, curing temperature is 170 DEG C, cure time is 12 minutes, and vulcanization is obtained
Semi-finished product tubing；
By special dilator, tubing is expanded to 4 times.
Test result：Cold shrink tube is not ftractureed during expansion, and sheet flame-retardant is required by UL94 V-0.
Embodiment two
By weight, 100 parts of ethylene propylene diene rubber, 40 parts of fire retardant metal phosphinate, 0.5 part of coupling agent, reinforcement are filled out
30 parts of material, 1 part of age resistor, 20 parts of paraffin oil are sequentially added in mill or banbury,（Wherein 0.5 part of coupling agent and fire retardant
40 parts are blended in height stirs machine, 3000 revs/min of rotating speed）, melting temperature is 120 degree, incorporation time 20-50 minutes；
Elastomeric compound is placed in mill, 6 parts of crosslinking agent is added at room temperature, beat triangle bag 5-10 times, halogen-free flameproof three is obtained
First EP rubbers material；
Using molding or injection moulding mode, vulcanized, curing temperature is 160 DEG C, cure time is 9 minutes, and vulcanization is obtained
Semi-finished product tubing；
By special dilator, tubing is expanded to 4 times.
Test result：Cold shrink tube is not ftractureed during expansion, and sheet flame-retardant is required by UL94 V-0.
Embodiment three
By weight, by 100 parts of ethylene propylene diene rubber, 20 parts of fire retardant metal phosphinate, 5 parts of coupling agent, reinforced filling
20 parts, during 5 parts of age resistor, 50 parts of paraffin oil sequentially add mill or banbury,（Wherein 20 parts of 5 parts of coupling agent and fire retardant
It is blended in height stirs machine, 3000 revs/min of rotating speed）, melting temperature is 120 degree, incorporation time 20-50 minutes；
Elastomeric compound is placed in mill, 10 parts of crosslinking agent is added at room temperature, beat triangle bag 5-10 times, halogen-free flameproof three is obtained
First EP rubbers material；
Using molding or injection moulding mode, vulcanized, curing temperature is 180 DEG C, cure time is 10 minutes, and vulcanization is obtained
Semi-finished product tubing；
By special dilator, tubing is expanded to 4 times.
Test result：Cold shrink tube is not ftractureed during expansion, and sheet flame-retardant is required by UL94 V-0.
Claims (2)
1. it is a kind of be easy to expansion Halogen Free Flame Retardant EPDM cold shrink tube, it is by following component in parts by weight
Composition：
100 parts of ethylene propylene diene rubber；
Crosslinking agent 3-10 parts；
Age resistor 1-5 parts；
Coupling agent 0.5-5 parts；
Reinforced filling 20-40 parts；
Paraffin oil 20-50 parts；
20-40 parts of fire retardant metal phosphinate；
Described ethylene propylene diene rubber is the ethylene-propylene containing the Third monomer containing unsaturated double-bond that can provide crosslinking sites
Copolymer, ethylene contents are 40~70% in the copolymer, and Mooney viscosity value is 45~90, contains controllable long chain branching；
Described crosslinking agent is the mixture of one or more in following material：Polyethylene glycol；Perbenzoic acid butyl ester；It is different
Propyl phenyl tert-butyl peroxide；Diisopropylbenzyl peroxide；Double (tert-butyl hydroperoxide isopropyl) benzene；Di-t-butyl peroxide
Compound；2,5- dimethyl -2, double (tert-butyl peroxy base) hexanes of 5-；2,5- dimethyl -2, double (tertiary butine crosses the base) -3- of 5-
Hexin；
Described age resistor is the mixture of one or more in following material：Zinc salt of 2 mercaptobenzimidazole；2,2,4- tri-
Methyl isophthalic acid, 2- dihyaroquinoline condensates；2,6 di tert butyl 4 methyl phenol styrenated phenol；2-mercaptobenzimidazole；
Described coupling agent is the one kind in following material：Silane coupler；Vinyl three (b- methoxy ethoxies) silane；
3- aminopropyl triethoxysilanes；γ-methacryloxypropyl trimethoxy silane；γ-mercapto propyl-triethoxysilicane
Alkane；VTES；N- (β-aminoethyl)-gamma-aminopropyl-triethoxy-silane；
Described reinforced filling is the mixture of one or more in following material：Firebrake ZB；Titanium oxide；Silica；Oxidation
Zinc；Magnesia；Silica；Carbon black；Magnesium hydroxide；Shepardite；Magnesium salt whisker；Basic magnesite；Aluminium hydroxide；
The viscosity of described paraffin oil（40℃）/ 10-6m2/s between 20-200, flash-point between 200-350 DEG C, density
Between 0.790-0.819 kg/L, ＜ -8 DEG C of pour point；
Described fire retardant metal phosphinate is hypo-aluminum orthophosphate or zinc hypophosphite, and the hypo-aluminum orthophosphate or zinc hypophosphite are micron
The particle of level.
2. a kind of preparation method of the as claimed in claim 1 Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion, its
It is characterised by, comprises the following steps：
Step 1：According to the weight proportion between each raw material, by the ethylene propylene diene rubber of corresponding weight, fire retardant metal hypophosphorous acid
Salt, coupling agent, reinforced filling, age resistor, paraffin oil are sequentially added in mill or banbury, and wherein coupling agent is needed with reinforcement
Filler is pre-processed, and mixing velocity is 5000 revs/min in homogenizer, and incorporation time is 20~50 points
Clock, in 5~30min is kneaded at 40~130 DEG C, obtains elastomeric compound；
Step 2：Elastomeric compound is placed in mill, crosslinking agent is added at room temperature, beat triangle bag 5-10 times, Halogen resistance is obtained
Combustion ethylene propylene diene monomer (EPDM) material；
Step 3：By 120 DEG C~200 DEG C of injection machine temperature, 5~40 minutes time was vulcanized, and vulcanization semi-finished product are obtained
Tubing；
Step 4：By special dilator, tubing is expanded to 4 times and above multiplying power, and the support of polypropylene material is put into centre
Bar, makes Halogen Free Flame Retardant EPDM cold shrink tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611239570.1A CN106751033A (en) | 2016-12-28 | 2016-12-28 | A kind of Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611239570.1A CN106751033A (en) | 2016-12-28 | 2016-12-28 | A kind of Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106751033A true CN106751033A (en) | 2017-05-31 |
Family
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|---|---|---|---|
| CN201611239570.1A Pending CN106751033A (en) | 2016-12-28 | 2016-12-28 | A kind of Halogen Free Flame Retardant EPDM cold shrink tube for being easy to expansion and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633435A (en) * | 2016-12-28 | 2017-05-10 | 长园电子（东莞）有限公司 | Ethylene-propylene-diene-terpolymer rubber cold-contraction pipe suitable for high-temperature storage and low-temperature installation and preparation method |
| CN108410073A (en) * | 2018-04-03 | 2018-08-17 | 山东华凌电缆有限公司 | A kind of EP rubbers cold shrink tube and preparation method thereof |
| CN108586954A (en) * | 2018-05-15 | 2018-09-28 | 山东华凌电缆有限公司 | A kind of halogen-free flame-retardant environment-friendly EP rubbers cold shrink tube and preparation method thereof |
| CN111718574A (en) * | 2020-08-07 | 2020-09-29 | 宁波耀众模塑科技有限公司 | Inorganic flame-retardant material for polyurethane foaming product |
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| CN102675754A (en) * | 2011-03-11 | 2012-09-19 | 中国科学院合肥物质科学研究院 | Halogen-free flame-retardant ethylene-propylene-diene monomer rubber material and preparation method thereof |
| CN103694579A (en) * | 2013-12-31 | 2014-04-02 | 长园电子（集团）有限公司 | Electric stress-controlled ethylene propylene diene monomer cold-contraction pipe and preparation method thereof |
| CN103709528A (en) * | 2013-12-31 | 2014-04-09 | 长园电子（集团）有限公司 | High-medium voltage resistant ethylene-propylene-diene monomer (EPDM) rubber cold-shrinkage sleeve pipe |
| CN104371207A (en) * | 2014-11-25 | 2015-02-25 | 中国科学院宁波材料技术与工程研究所 | Flame retardant material and preparation method thereof |
| CN204897803U (en) * | 2015-06-11 | 2015-12-23 | 深圳市骏鼎达新材料股份有限公司 | Compound sleeve pipe and compound ripple sleeve pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102675754A (en) * | 2011-03-11 | 2012-09-19 | 中国科学院合肥物质科学研究院 | Halogen-free flame-retardant ethylene-propylene-diene monomer rubber material and preparation method thereof |
| CN103694579A (en) * | 2013-12-31 | 2014-04-02 | 长园电子（集团）有限公司 | Electric stress-controlled ethylene propylene diene monomer cold-contraction pipe and preparation method thereof |
| CN103709528A (en) * | 2013-12-31 | 2014-04-09 | 长园电子（集团）有限公司 | High-medium voltage resistant ethylene-propylene-diene monomer (EPDM) rubber cold-shrinkage sleeve pipe |
| CN104371207A (en) * | 2014-11-25 | 2015-02-25 | 中国科学院宁波材料技术与工程研究所 | Flame retardant material and preparation method thereof |
| CN204897803U (en) * | 2015-06-11 | 2015-12-23 | 深圳市骏鼎达新材料股份有限公司 | Compound sleeve pipe and compound ripple sleeve pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106633435A (en) * | 2016-12-28 | 2017-05-10 | 长园电子（东莞）有限公司 | Ethylene-propylene-diene-terpolymer rubber cold-contraction pipe suitable for high-temperature storage and low-temperature installation and preparation method |
| CN108410073A (en) * | 2018-04-03 | 2018-08-17 | 山东华凌电缆有限公司 | A kind of EP rubbers cold shrink tube and preparation method thereof |
| CN108586954A (en) * | 2018-05-15 | 2018-09-28 | 山东华凌电缆有限公司 | A kind of halogen-free flame-retardant environment-friendly EP rubbers cold shrink tube and preparation method thereof |
| CN111718574A (en) * | 2020-08-07 | 2020-09-29 | 宁波耀众模塑科技有限公司 | Inorganic flame-retardant material for polyurethane foaming product |
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Application publication date: 20170531 |