CN106397960B - Polyolefine resin composition, preparation method and cable insulating materials, cable - Google Patents
Polyolefine resin composition, preparation method and cable insulating materials, cable Download PDFInfo
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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
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- C08L2203/00—Applications
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- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- 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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- C08L2207/00—Properties characterising the ingredient of the composition
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- C08L2207/066—LDPE (radical process)
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Abstract
The present invention provides a kind of polyolefine resin composition, preparation method and cable insulating materials, cable.The polyolefine resin composition includes following components: polyolefin: 100 parts by weight；Antioxidant: 0.02-0.9 parts by weight；Coupling agent: 1-10 parts by weight；Initiator: 0.5-3 parts by weight；Lactams cyclics and/or anhydride compound: 0.7-3 parts by weight.Polyolefine resin composition of the invention not only conforms with the requirements in national standard about cable, especially insulation thermal contraction performance is greatly improved, conductor will not be allowed to be exposed in air, so as to avoid generation electric leakage, short circuit, fire or make one the fortuitous events such as electric shock, and the preparation method of polyolefine resin composition of the invention is simple, easily operated control.
Description
Technical field
The present invention relates to a kind of polyolefine resin composition, preparation method and cable insulating materials, cable, belong to absolutely
Edge Material Field.
Background technique
There are mainly three types of processes for industrial silane cross-linked polyolefin now: two step method production technology is (also known as
SioplasE), one-step method production process (also known as MonosilR) and alkylene silane copolymer technique.Polyolefin is through crosslinked with silicane
Afterwards, mechanical performance, heat resistance, chemical-resistance, stress crack resistance performance are significantly improved, this is just widened
Application range, such as applied in, in terms of the insulation of low tension wire, cable.
In recent years, it finds that the insulation thermal contraction performance of cable is poor on the polyolefin cable of silane thermal decomposition process crosslinking, works as insulation
The contact area of material and conductor is relatively small, when especially the smooth rounding adhesive force of single conductive surface is inadequate, insulation heat
Shrinking percentage is extremely difficult to be not more than in GB/T12706-2008 standard 4% requirement, and the insulation of some cross-linked polyolefins is heat-shrinked
Rate has been even up to 20%.
Since the crystallinity of strand seriously affects the performance that insulation is heat-shrinked, insulation heat-shrinkable is solved at present
The main method of energy is to carry out stringent control to the production technology of extrusion.Raising melting temperature, reduction are cold in extrusion process
But it speed and reduces external force (traction stretch) and is heat-shrinked problem to reduce the insulation of conventional silane cross-linked polyolefin.But it mentions
The temperature of the necessary lift apparatus of high melt temperature, can make polyolefin generate incipient scorch in precrosslink, in addition to the service life of equipment
There is certain influence.Cooling velocity is reduced then to need to carry out sub-sectional cooling, especially winter using slow cooling operation and warm water when squeezing out
The lower occasion of its environment temperature also needs suitably to preheat conductor, thus substantially increases production cost.
In addition, the use of extrusion die is also a kind of important method for improving thermal contraction, but in extrusion die itself
Portion's pressure is larger, and material is caused to be exaggerated extrusion swelling effect during extrusion, to being affected for the surface of cable, makes
Surface quality reduces；Simultaneously extrusion die can not produce be wound with mica tape fire-resisting cable also become its popularization limitation because
Element.
Summary of the invention
Problems to be solved by the invention
The present invention provides a kind of polyolefine resin composition, preparation method and cable insulating materials, cable, this is poly-
Olefin resin composition not only conforms with the requirements in national standard about cable, and especially insulation thermal contraction performance has very big
Improve, conductor will not be allowed to be exposed in air, so as to avoid electric leakage, short circuit, fire or the unexpected feelings such as make one electric shock occur
Condition, and the preparation method of polyolefine resin composition is simple, easily operated control.
The solution to the problem
The present invention provides a kind of polyolefine resin composition, includes following components:
Polyolefin: 100 parts by weight
Antioxidant: 0.02~0.9 parts by weight；
Coupling agent: 1~10 parts by weight；
Initiator: 0.5~3 parts by weight；
Lactams cyclics and/or anhydride compound: 0.7~3 parts by weight.
Polyolefine resin composition according to the present invention, wherein the additional amount of the polyolefin is 100 parts by weight, described
The additional amount of antioxidant is 0.02~0.1 parts by weight；The additional amount of the coupling agent is 1~4 parts by weight；The initiator adds
Entering amount is 0.5~2 parts by weight；The additional amount of the lactams cyclics and/or anhydride compound is 0.7~2 weight
Part.
Polyolefine resin composition according to the present invention, wherein the polyolefin includes polyethylene；It preferably includes linear low
One or more of density polyethylene, low density polyethylene (LDPE), high density polyethylene (HDPE), medium density polyethylene.
Polyolefine resin composition according to the present invention, wherein the antioxidant includes bis- [β-(3, the 5- bis- tertiary fourths of 1,2-
Base -4- hydroxy phenyl) propionyl] hydrazine, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, 4,4'- be thio
One or both of bis- (6- tert-butyl -3- methylphenols), thio-2 acid 2 stearyl ester, dilauryl thiodipropionate
More than.
Polyolefine resin composition according to the present invention, wherein the coupling agent includes silane coupling agent, preferably includes second
One of alkenyl triethoxysilane, vinyltrimethoxysilane, vinyl-three (2- methoxy ethoxy) silane or two
Kind or more.
Polyolefine resin composition according to the present invention, wherein the initiator includes peroxide initiator, is preferably wrapped
Include cumyl peroxide.
Polyolefine resin composition according to the present invention, wherein the lactams cyclics include butyrolactam；Institute
Stating anhydride compound includes one or both of maleic anhydride, phthalic anhydride.
The present invention also provides a kind of preparation methods of polyolefine resin composition according to the present invention comprising: by each group
It is granulated after dividing mixing, obtains polyolefine resin composition.
The present invention also provides a kind of cable insulating materials comprising polyolefine resin composition according to the present invention.
The present invention also provides a kind of cables comprising cable insulating materials of the invention.
The effect of invention
The insulation thermal contraction performance of polyolefine resin composition of the invention is excellent, long service life.Pass through acyl in adding
Amine cyclics and/or anhydride compound, improve the regularity of strand itself, strengthen the work between each strand
Firmly, the stability of material is improved while improving crystallinity, to improve the heat resistanceheat resistant shrinkage of material itself.And
And the length that the insulation of polyolefine resin composition of the invention is heat-shrinked is compared to the polyolefin tree that common crosslinked with silicane obtains
Oil/fat composition reduces by 70%.
Specific embodiment
The present invention provides a kind of polyolefine resin compositions comprising following components:
Polyolefin: 100 parts by weight；
Antioxidant: 0.02~0.9 parts by weight；
Coupling agent: 1~10 parts by weight；
Initiator: 0.5~3 parts by weight；
Lactams cyclics and/or anhydride compound: 0.7~3 parts by weight.
In addition, lactams cyclics of the invention are generally the lactams cyclics of ternary~eight yuan, preferably
For the lactams cyclics of quaternary~hexa-atomic；The more preferably lactams cyclics of quaternary.
It is by polyolefin, antioxidant, coupling agent, initiator and lactams cyclics and/or acid anhydrides in the present invention
What the mixture of class compound was granulated, in this process, lactams cyclics and/or anhydride compound have portion
Divide and be grafted on polyolefin, but can guarantee that it mixes more evenly, anti-contracility can be strong.If first by lactam nucleus class
It closes object and/or anhydride compound and polyolefin carries out graft reaction, although interference, grafting will not be generated with Silane Grafted
Product afterwards has partial cross-linked in secondary operation, while lactams cyclics and/or anhydride compound cannot be very
Good dispersion in the polymer, mixing not enough uniformly, in addition, its anti-contracility can be lower.
Polyolefine resin composition according to the present invention, wherein the additional amount of the polyolefin is 100 parts by weight, described
The additional amount of antioxidant is 0.02~0.1 parts by weight；The additional amount of the coupling agent is 1~4 parts by weight；The initiator adds
Entering amount is 0.5~2 parts by weight；The additional amount of the lactams cyclics and/or anhydride compound is 0.7~2 weight
Part.
Polyolefine resin composition according to the present invention, wherein the polyolefin includes polyethylene, the poly- second in the present invention
Alkene can be the homogeneous out-phase that is also possible to.The polyethylene includes linear low density polyethylene (LLDPE), low density polyethylene
One or more of alkene (LDPE), high density polyethylene (HDPE) (HDPE), medium density polyethylene (MDPE).
The density of linear low density polyethylene of the invention is usually 0.915~0.922g/cm3, molecular weight is 2 × 104~
3×104Da is 1.7~2.3g/ according to the melt flow index that GB/3682-2000 is measured under 190 DEG C and 2.16kg load
10min。
The density of low density polyethylene (LDPE) of the invention is usually 0.910~0.925g/cm3, molecular weight is 5 × 104~50 ×
104Da is 1.0~2.8g/ according to the melt flow index that GB/3682-2000 is measured under 190 DEG C and 2.16kg load
10min。
The density of medium density polyethylene of the invention is usually 0.926~0.940g/cm3, molecular weight is 15 × 104~25
×104Da is 1.7~3.1g/ according to the melt flow index that GB/3682-2000 is measured under 190 DEG C and 2.16kg load
10min。
The density of high density polyethylene (HDPE) of the invention is usually 0.941~0.965g/cm3, molecular weight is 10 × 104~30
×104Da is 6.5~8.0g/ according to the melt flow index that GB/3682-2000 is measured under 190 DEG C and 2.16kg load
10min。
Polyolefine resin composition according to the present invention, wherein linear low density polyethylene and/or low can be added
On the basis of density polyethylene, one or both of medium density polyethylene, high density polyethylene (HDPE) are added, to further mention
The crystallinity of macromolecular chain.
Polyolefine resin composition according to the present invention, wherein the additional amount of the antioxidant is 0.02~0.9 weight
Part, preferably 0.02~0.1 parts by weight, adding antioxidant of the invention can be such that polyolefine resin composition of the invention plays
The effect of good anti-oxidant and anti-precrosslink.When the content of antioxidant is lower than 0.02 parts by weight, cannot play well anti-
The effect of oxidation and anti-precrosslink；When the content of antioxidant is higher than 0.9 parts by weight, degree of cross linking deficiency will lead to.
The antioxidant may include bis- [β-(3,5- di-tert-butyl-hydroxy phenyl) propionyl] hydrazine (antioxidant of 1,2-
1024), four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters (antioxidant 1010), 4,4'- thiobis
(6- tert-butyl -3- methylphenol) (antioxidant 300), thio-2 acid 2 stearyl ester (antioxidant DSTP), thio-2 acid
One or more of dilauryl (anti-oxidant DLTP).
Polyolefine resin composition according to the present invention, wherein the additional amount of the coupling agent is 1~10 parts by weight, excellent
It is selected as 1~4 parts by weight.Enough crosslinkings can be provided for polyolefine resin composition of the invention by adding coupling agent of the invention
Degree.When the additive amount of coupling agent is less than 1 parts by weight, crosslinking deficiency will lead to, when the additive amount of coupling agent is greater than 10 parts by weight
When, it will lead to and be crosslinked excessively or generate precrosslink.The coupling agent may include silane coupling agent, preferably include vinyl three
Ethoxysilane (silane coupling A -151), vinyltrimethoxysilane (silane coupling A -171), (2- of vinyl-three
One or more of methoxy ethoxy) silane (silane coupling A -172).Polyolefin resin group according to the present invention
Object is closed, the additional amount of the initiator is 0.5~3 parts by weight, preferably 0.5~2 parts by weight.Initiator of the invention can be
Polyolefine resin composition provides enough free radicals, is conducive to the progress of initiation reaction.The additional amount of initiator is less than 0.5 weight
When measuring part, initiation reaction cannot be given full play to, initiation reaction is excessive when the additional amount of initiator is greater than 3 parts by weight.
The initiator may include peroxide initiator, preferably include cumyl peroxide (DCP).
Polyolefine resin composition according to the present invention, wherein the lactams cyclics and/or anhydride chemical combination
The content of object is 0.7~3 parts by weight, and preferably 0.7~2 parts by weight add lactams cyclics and/or acid anhydrides of the invention
Class compound enables to polyolefine resin composition of the invention to have excellent anti-contracility energy.When lactam nucleus class
When the additional amount of conjunction object and/or anhydride compound is below 0.7 parts by weight, excellent anti-contracility energy can not be obtained, when interior
When the additional amount of amide cyclics and/or anhydride compound is more than 3 parts by weight, anti-contracility can increase with additional amount
And it reduces.
Preferably, the lactams cyclics include butyrolactam；The anhydride compound includes maleic two
One or both of acid anhydrides, phthalic anhydride.
The present invention also provides a kind of preparation methods of polyolefine resin composition according to the present invention comprising: it will be each
It is granulated after component hybrid reaction, obtains polyolefine resin composition.
According to the method for the present invention, by polyolefin, coupling agent, initiator, antioxidant, lactams cyclics and/or
Anhydride compound through high-speed kneading machine after mixing, 180~220 DEG C at a temperature of successively add in reaction kettle, utilize
Blender after mixing, is granulated subsequently into screw machine, so that polyolefin and coupling agent (such as: silane coupling agent) it connects
Branch reaction, is then molded or extrusion obtains finished product.Finally finished product is exposed in moisture or hot water, so as to cause the water of silane
Solution, and Si-O-Si key is formed by polycondensation reaction and is crosslinked, obtain polyolefine resin composition.
Wherein, single screw rod extruding granulator is divided into five regions, and the temperature in five regions is respectively as follows: first area 120
DEG C, 160 DEG C of second area, 180 DEG C of third region, 200 DEG C of the fourth region, the 5th 200 DEG C of region.The revolving speed of screw rod is 60r/
Min~100r/min；The revolving speed of pelleter is 30r/min~60r/min, so that the partial size of polyolefine resin composition meets φ
The requirement of 3mm × 4mm.
By improving extrusion temperature and fusion pressure, thus guarantee the uniformity of polyolefine resin composition in process of production and
Stability.The present invention also provides a kind of cable insulating materials comprising polyolefine resin composition of the invention.
The present invention also provides a kind of cables comprising cable insulating materials of the invention.
Polyene of the invention is not particularly limited through the application field of resin combination, it is various including needing to insulate
Field, such as the manufacture of cable cover(ing) or the sheet material of sheath.
In this application, the above-mentioned each component used is commercial product, can be easily commercially available.
Embodiment
Below by the way of embodiment and comparative example, technical solution of the present invention is described further.However, this
A little embodiments are simultaneously not meant to limit the scope of the invention.
Embodiment 1
By the low density polyethylene (LDPE) of 20 parts by weight, the medium density polyethylene of 20 parts by weight, 20 parts by weight high-density polyethylene
Alkene, the linear low density polyethylene of 40 parts by weight, the cumyl peroxide of 1.4 parts by weight, 6.0 parts by weight three second of vinyl
Oxysilane, bis- [β-(3,5- di-tert-butyl-hydroxy phenyl) propionyl] hydrazines of 1,2- of 0.4 parts by weight, 1.7 parts by weight suitable fourth
Enedioic acid acid anhydride, 200 DEG C at a temperature of be successively added in high-speed kneading machine, after mixing using blender, subsequently into
Double screw extruder is granulated, and obtains polyolefine resin composition I.
Embodiment 2
By the low density polyethylene (LDPE) of 33 parts by weight, the medium density polyethylene of 23 parts by weight, 44 parts by weight linea low density
Polyethylene, the cumyl peroxide of 1.7 parts by weight, 3.5 parts by weight vinyl-three (2- methoxy ethoxy) silane, 0.1
The butyrolactam of the dilauryl thiodipropionate of parts by weight, 1.7 parts by weight, 200 DEG C at a temperature of be successively added to reaction
In kettle, after mixing using blender, it is granulated subsequently into screw machine, obtains polyolefine resin composition II.
Embodiment 3
By the low density polyethylene (LDPE) of 15 parts by weight, the medium density polyethylene of 25 parts by weight, 50 parts by weight linea low density
Polyethylene, the high density polyethylene (HDPE) of 10 parts by weight, the cumyl peroxide of 1.1 parts by weight, 1.5 parts by weight vinyl front three
The butyrolactam of oxysilane, the thio-2 acid 2 stearyl ester of 0.08 parts by weight and 1.2 parts by weight.In 200 DEG C of temperature
It is successively added in reaction kettle under degree, after mixing using blender, is granulated subsequently into double screw extruder, obtains polyene
Hydrocarbon resin composition III.
Embodiment 4
The linea low density of the low density polyethylene (LDPE) of 25 parts by weight, the medium density polyethylene of 9 parts by weight, 50 parts by weight is gathered
Ethylene, the high density polyethylene (HDPE) of 16 parts by weight, the cumyl peroxide of 1.7 parts by weight, 1.5 parts by weight the (2- of vinyl-three
Methoxy ethoxy) silane, the 4,4'- thiobis (6- tert-butyl -3- methylphenol) of 0.08 parts by weight and 1.2 parts by weight
Phthalic anhydride.200 DEG C at a temperature of be successively added in reaction kettle, after mixing using blender, subsequently into
Double screw extruder is granulated, and obtains polyolefine resin composition IV.
Embodiment 5
By the low density polyethylene (LDPE) of 30 parts by weight, the medium density polyethylene of 20 parts by weight, 40 parts by weight linea low density
Polyethylene, the high density polyethylene (HDPE) of 10 parts by weight, the cumyl peroxide of 1.3 parts by weight, 1.5 parts by weight three second of vinyl
Oxysilane, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters of 0.08 parts by weight and 1.2 weight
The maleic anhydride of part.200 DEG C at a temperature of be successively added in reaction kettle, after mixing using blender, then
It is granulated into double screw extruder, obtains polyolefine resin composition V.
Comparative example 1
By the low density polyethylene (LDPE) of 15 parts by weight, the medium density polyethylene of 25 parts by weight, 50 parts by weight linea low density
Polyethylene, the high density polyethylene (HDPE) of 10 parts by weight, the cumyl peroxide of 1.1 parts by weight, 1.5 parts by weight three second of vinyl
The butyrolactam of oxysilane, the dilauryl thiodipropionate of 0.08 parts by weight and 5 parts by weight.200 DEG C at a temperature of
It is successively added in reaction kettle, after mixing using blender, is granulated subsequently into double screw extruder, obtains polyolefin tree
Oil/fat composition VI.
Comparative example 2
By the low density polyethylene (LDPE) of 15 parts by weight, the medium density polyethylene of 25 parts by weight, 50 parts by weight linea low density
Polyethylene, the high density polyethylene (HDPE) of 10 parts by weight, the cumyl peroxide of 1.1 parts by weight, 1.5 parts by weight three second of vinyl
The dilauryl thiodipropionate of oxysilane and 0.08 parts by weight.200 DEG C at a temperature of be successively added in reaction kettle,
After mixing using blender, it is granulated subsequently into double screw extruder, obtains polyolefine resin composition VII.
Comparative example 3
The low density polyethylene (LDPE) of low density polyethylene (LDPE), 23 parts by weight that the maleic anhydride of 10 parts by weight is grafted, 23
The medium density polyethylene of parts by weight, the linear low density polyethylene of 44 parts by weight, the cumyl peroxide of 1.7 parts by weight, 3.5
Vinyl-three (2- methoxy ethoxy) silane of parts by weight, 0.1 parts by weight dilauryl thiodipropionate at 200 DEG C
At a temperature of be successively added in reaction kettle, after mixing using blender, subsequently into screw machine be granulated, obtain polyolefin tree
Oil/fat composition VIII.
Performance test
Table 1 lists the performance test results of said polyolefins resin combination I-VIII.
Table 1
By table 1, it can be concluded that, the insulation percent thermal shrinkage that polyolefine resin composition is prepared in the embodiment of the present application 1-5 exists
2.5% or less, it is seen that the polyolefine resin composition that the embodiment of the present application 1-5 is prepared has better thermal contraction performance.
In comparative example 1, the additional amount of butyrolactam not within the scope of this application, final preparation-obtained polyolefin tree
The insulation percent thermal shrinkage of oil/fat composition VI is 12%, and thermal contraction performance is far below the polyolefine resin composition of the application.
In comparative example 2, lactams cyclics and/or anhydride compound, the polyene being finally prepared are not added
The insulation percent thermal shrinkage of hydrocarbon resin composition VII is 15%, and thermal contraction performance is far below the polyolefine resin composition of the application.
In comparative example 3, the low density polyethylene (LDPE) of 10 parts by weight is replaced with into the maleic anhydride grafting of 10 parts by weight
Low density polyethylene (LDPE), and it is added without lactams cyclics and/or anhydride compound, the polyolefin being finally prepared
The insulation percent thermal shrinkage of resin combination VIII is 6.5%, and thermal contraction performance is equally not so good as the polyolefin resin combination of the application
Object.
Claims (10)
1. a kind of cable insulating materials, which is characterized in that include following components:
Polyolefin: 100 parts by weight；
Antioxidant: 0.02~0.9 parts by weight；
Coupling agent: 1~10 parts by weight；
Initiator: 0.5~3 parts by weight；
The combination of lactams cyclics or lactams cyclics and anhydride compound: 0.7~3 parts by weight；
The lactams cyclics are the lactams cyclics of ternary~eight yuan；
The coupling agent includes silane coupling agent；
The initiator includes peroxide initiator；
The anhydride compound includes one or both of maleic anhydride, phthalic anhydride.
2. cable insulating materials according to claim 1, which is characterized in that the additional amount of the polyolefin is 100 weights
Part is measured, the additional amount of the antioxidant is 0.02~0.1 parts by weight；The additional amount of the coupling agent is 1~4 parts by weight；It is described
The additional amount of initiator is 0.5~2 parts by weight；The additional amount of the lactams cyclics and/or anhydride compound is
0.7~2 parts by weight.
3. cable insulating materials according to claim 1 or 2, which is characterized in that the polyolefin includes polyethylene.
4. cable insulating materials according to claim 3, which is characterized in that the polyethylene includes that linea low density is poly-
One or more of ethylene, low density polyethylene (LDPE), high density polyethylene (HDPE), medium density polyethylene.
5. cable insulating materials according to claim 1 or 2, which is characterized in that the antioxidant includes the bis- [β-of 1,2-
(3,5- di-tert-butyl-hydroxy phenyl) propionyl] hydrazine, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythrites
Ester, 4,4'- thiobis (6- tert-butyl -3- methylphenol), thio-2 acid 2 stearyl ester, in dilauryl thiodipropionate
One or more.
6. cable insulating materials according to claim 1 or 2, which is characterized in that the silane coupling agent includes ethylene
One or both of ethyl triethoxy silicane alkane, vinyltrimethoxysilane, vinyl-three (2- methoxy ethoxy) silane
More than.
7. cable insulating materials according to claim 1 or 2, which is characterized in that the peroxide initiator includes
Cumyl peroxide.
8. cable insulating materials according to claim 1 or 2, which is characterized in that the lactams cyclics packet
Include butyrolactam.
9. a kind of preparation method of cable insulating materials according to claim 1 to 8, which is characterized in that packet
It includes: being granulated after each component is mixed, obtain cable insulating materials.
10. a kind of cable, which is characterized in that including the described in any item cable insulating materials of claim 1-8.
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| CN103102576A (en) * | 2013-02-05 | 2013-05-15 | 常熟市中联光电新材料有限责任公司 | Environmentally-friendly one-step process organosilane crosslinked polyethylene cable material |
| CN104250391A (en) * | 2014-09-26 | 2014-12-31 | 安徽合聚阻燃新材料股份有限公司 | Silane crosslinking halogen-free flame retardant polyolefin composite material and preparation method thereof |
| CN105037869A (en) * | 2015-06-02 | 2015-11-11 | 浙江万马高分子材料有限公司 | Silane naturally-crosslinked cable insulation material |
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| CN103102499A (en) * | 2013-02-05 | 2013-05-15 | 常熟市中联光电新材料有限责任公司 | Preparation method of environment-friendly one-step process organosilane crosslinked polyethylene cable material |
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