CN110283394A - It can be used for the fire-retardant TPV elastomer and preparation method thereof of cross-linking radiation - Google Patents
It can be used for the fire-retardant TPV elastomer and preparation method thereof of cross-linking radiation 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
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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
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/06—Crosslinking by radiation
Abstract
The present invention relates to fire-retardant TPV elastomers that can be used for cross-linking radiation and preparation method thereof, component are as follows: synthetic rubber, polyolefin resin, metallocene-polyolefin resin, white oil, fire retardant, crosslinking agent, assistant crosslinking agent, cross-linked accelerating agent for irradiation, antioxidant, lubricant, light stabilizer etc., this method are as follows: first by synthetic rubber, polyolefin resin, mix in a high speed mixer after white oil, crosslinking agent, assistant crosslinking agent etc. be added obtain TPV particle through double screw extruder extruding pelletization；Add various auxiliary agents that the fire-retardant TPV that can be used for cross-linking radiation is made through double screw extruder extruding pelletization after mixing in a high speed mixer TPV particle and fire retardant, metallocene-polyolefin resin, cross-linked accelerating agent for irradiation again.The fire-retardant TPV provided by the present invention that can be used for cross-linking radiation has preparation method simple, can improve the heat resistant and weatherability of fire-retardant TPV material by a relatively large margin, be of great significance to the application field for widening TPV elastomer.
Description
Technical field:
The present invention relates to thermoplastic elastic material technical field more particularly to a kind of it can be used for the fire-retardant of cross-linking radiation
TPV elastomer and preparation method thereof.
Background technique:
It between rubber and plastics is a kind of composite structured high-performance material that thermoplastic elastomer (TPE), which is physical property,
Material, it had not only had the elasticity of rubber, but also the workability with plastics.One new " raw material of industry system " is constituted, by people
Referred to as " third generation rubber ".It is known as TPV (Thermoplastic by elastomer prepared by substrate of ethylene propylene diene rubber
Vulcanization), because Technology of Dynamic Vulcanized obtains continuous phase and dispersed phase formation three-dimensional network shape island structure in system
Name.Ethylene propylene diene rubber after vulcanization is evenly distributed in plastics phase with micron-sized particle, possesses its own at normal temperature
The physical property and functional character of thermoset rubber possess the high fluidity and reprocessabilty of thermoplastic at high temperature,
So that the features such as product possesses processing and forming simplicity, and material is Ke Xunhuanliyong, cost performance is high, be now widely used for automobile work
The fields such as industry, building materials, electronic apparatus, health care and consumer appliance.
Such as a kind of high-performance dynamic vulcanization thermoplastic is disclosed in the Chinese patent application No. is CN201410220053
The component and proportion of composition described in property method for producing elastomers are as follows: 30~50 parts of ethylene propylene diene rubber, polypropylene 20~60
Part, 10~60 parts of rubber oil, 5~15 parts of filler, 0.2~2.0 part of crosslinking agent, 0.2~2 part of cross-linking aid.The invention this method
The elastomer produced has the characteristics that oil resistivity is excellent, permanent compression set is low, and is also applicable in equipment in technique
Extensively, the advantages that preparation process is simple.
Although thermoplastic elastic material all shows excellent performance in all various aspects, due to itself being still thermoplastic
Property material, deformation can be melted after heated, so thermoplastic elastomer (TPE) still has a certain distance compared with thermoset rubber, and
Need material that there is anti-flammability under many application conditions.Such as automobile engine perimeter seal, uses and be easy under long term high temperature
Deformation, aging, so need to improve in some Special use environment high temperature resistant, the resistance to ag(e)ing of thermoplastic elastic material with
And anti-flammability.Application No. is CN
Disclosed in 201710325918 Chinese patent a kind of 125 DEG C of charging pile TPE protective cover materials of cross-linking radiation and its
The component and proportion of composition described in preparation method are 15~30 parts of SEBS saturation type polystyrene elastomers, metallocene-polyolefin
13~30 parts of resin, 3~8 parts of modifying agent of TPV dynamic crosslinking oil resistant, 35~50 parts of P-N type fire retardant, polyolefin elastomer 5~
10 parts, 10~25 parts of white oil, 3~5 parts of talcum powder, 0.1~2 part of toner, 0.5~2 part of cross-linking radiation sensitizer, primary antioxidant
0.1~0.5 part, 0.1~0.5 part of auxiliary antioxidant, 1.5~2.5 parts of organo-silicic oil.The invention is after cross-linking radiation
So that charging pile is had a certain upgrade with the heat resistance of TPE protective cover material, reaches the requirement that heat extends≤175%.
The TPE performance after cross-linking radiation, which truly has, above is promoted, but because TPE is with styrene block copolymers
It (SEBS) is the elastomeric material of substrate preparation, SEBS is thermoplastic material, itself does not have chemical crosslinking structure, wherein serving as
The styrene segment for being physical crosslinking point can melt heated as plastic material, be easily deformed so as to cause material, lose use
Value.So TPE still cannot be greatly improved even if adding metallocene-polyolefin resin into TPE material carries out cross-linking radiation
The heatproof and weatherability of material.
Summary of the invention:
The present invention provides a kind of fire-retardant TPV elastomers and preparation method thereof that can be used for cross-linking radiation, in dynamic vulcanization
On the basis of TPV elastomer, fire retardant, metallocene-polyolefin resin, cross-linked accelerating agent for irradiation is added and carries out irradiation friendship after being blended
Connection, improves use temperature, high temperature degradation resistance, weatherability and the anti-flammability of TPV material by a relatively large margin.Its particular technique side
Case is as follows:
A kind of fire-retardant TPV elastomer can be used for cross-linking radiation, in parts by weight, including following components:
Preferably, the preferred tert-butylperoxy isopropyl carbonate of the crosslinking agent, cumyl peroxide or octyl phenol
One of urea formaldehyde or any number of combination, the preferred diphenyl-methane maleimide of the assistant crosslinking agent, triisopropyl isocyanic acid
One of ester or stannous chloride or any number of combination.
Preferably, the preferred ethylene propylene diene rubber of synthetic rubber.
Preferably, the preferred polyethylene of the polyolefin resin, polypropylene or polyethylene and polyacrylic mixture.
Preferably, the preferred Mooney viscosity of ethylene propylene diene rubber is 20~130, ethylene contents are 50~75%, the
Three monomers are ethylidene norbornene or dicyclopentadiene and content is 4~20%.
Preferably, the fire retardant is melamine cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate, ten bromines two
One kind or any number of combination of vinylbenzene, antimony oxide.
Preferably, one kind of the preferred metallocene PE of metallocene-polyolefin resin, metallocene polypropylene or
Any number of combination.
Preferably, the preferred trimethylol-propane trimethacrylate of the cross-linked accelerating agent for irradiation, trihydroxy methyl third
One kind or any number of combination of alkane triacrylate, allyl methacrylate.
The present invention also provides a kind of fire-retardant TPV method for producing elastomers that can be used for cross-linking radiation, comprising the following steps:
A), appropriate ethylene propylene diene rubber, polyolefin resin, inorganic filler are weighed by component requirements, in a high speed mixer
After mixing, through double screw extruder extruding pelletization, intermediate is obtained；
B), crosslinking agent and assistant crosslinking agent is added in the resulting intermediate of step A), is uniformly mixed through high-speed mixer, double
Dynamic vulcanization is granulated in screw extruder, in granulation process, white oil is added by liquid spout, TPV elastomer is made
Grain；
C), the resulting TPV elastomer particles of step B) and fire retardant, metallocene-polyolefin resin, cross-linking radiation are promoted
Agent adds antioxidant, lubricant, light stabilizer etc. after double screw extruder extruding pelletization after mixing in a high speed mixer
The fire-retardant TPV elastomer that can be used for cross-linking radiation is made.
Further, the double screw extruder, process conditions are 160~220 DEG C of temperature, 200~320rpm of revolving speed.It will be upper
It states and can be used for the print that the TPV elastomer of cross-linking radiation uses vertical injection molding machine to be molded thickness 3mm under the conditions of 200 DEG C, measurement
The hardness of material prepares batten using universal sampling machine, measures tensile strength, elongation at break and the flame retardant rating of material.
The beneficial effects of the present invention are: the fire-retardant TPV elastomer provided by the present invention that can be used for cross-linking radiation and its system
Vulcanizing agent is added using the ethylene propylene diene rubber and polyolefin resin, inorganic filler that have excellent weather resistance in Preparation Method after mixing,
It is granulated by double screw extruder dynamic vulcanization, and is filled with white oil in the process, keep the ethylene propylene diene rubber particle of crosslinking uniform
Be dispersed in polyolefin resin, add fire retardant, metallocene-polyolefin resin, cross-linked accelerating agent for irradiation be uniformly mixed it is laggard
Row cross-linking radiation, being crosslinked the polyolefin resin of plastics phase is network structure, and reducing material is influenced by polyolefin is low-melting, compared with
The use temperature and anti-flammability, high temperature degradation resistance and weatherability for increasing substantially material are held closer to thermoset rubber
Easy processing has widened the application field of TPV elastomer.
Specific embodiment:
The preferred embodiments of the present invention will be described in detail below, so that advantages and features of the invention can be easier to by this
Field personnel understanding, so as to make a clearer definition of the protection scope of the present invention.
Embodiment 1
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 1:
Table 1
Wherein: the ethylene propylene diene rubber Mooney viscosity is 20~45, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
5~8g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the naphthenic oil are 120~200.The fire retardant is three
Poly cyanamid cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate.
Specific step is as follows:
A), ethylene propylene diene rubber, polyolefin resin, inorganic filler, partial lubrication agent are weighed by formula component, it is mixed in high speed
In conjunction machine after mixing, through double screw extruder extruding pelletization, intermediate 1 is obtained；
B), crosslinking agent and assistant crosslinking agent is added in the resulting intermediate 1 of step A), is uniformly mixed through high-speed mixer,
Dynamic vulcanization is granulated in double screw extruder, in granulation process, white oil is added by liquid spout, TPV elastomer is made
Particle 1.
C), the resulting TPV elastomer particles of step B) and fire retardant, metallocene-polyolefin resin, cross-linking radiation are promoted
Agent, antioxidant, lubricant, light stabilizer after mixing, are made after double screw extruder extruding pelletization in a high speed mixer
It must can be used for the fire-retardant TPV elastomer 1 of cross-linking radiation.
Wherein: the double-screw extruder screw diameter is 75mm, and draw ratio 52, temperature controlling range process conditions are
160~200 DEG C of temperature, 200~320rpm of revolving speed.
The above-mentioned fire-retardant TPV elastomer that can be used for cross-linking radiation is molded thickness using vertical injection molding machine under the conditions of 200 DEG C
The print for spending 3mm, is crosslinked, irradiation dose 15M rad through ultraviolet light irradiation cross-linking apparatus.Then the hardness of material is measured,
Batten is prepared using universal sampling machine, measures tensile strength, elongation at break and the flame retardant rating of material.
Embodiment 2
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 2:
Table 2
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
5~8g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the naphthenic oil are 120~200.The fire retardant is three
Poly cyanamid cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate.
Embodiment 2 is selected the ethylene propylene diene rubber of high Mooney viscosity replacement low mooney viscosity, is improved compared to embodiment 1
The performance of material selects antioxidant 1010 to replace antioxidant 264.
Specific preparation method, technical parameter are the same as embodiment 1.
Embodiment 3
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 3:
Table 3
| Raw material title | Parts by weight |
| Synthetic rubber ethylene propylene diene rubber | 45 |
| Polyolefin resin polypropylene | 20 |
| Metallocene-polyolefin resin linear low density polyethylene (LDPE) | 20 |
| Crosslinking agent octyl phenolic | 1 |
| Cross-linking aid stannous chloride | 0.25 |
| Cross-linked accelerating agent for irradiation allyl methacrylate | 0.8 |
| White oil naphthenic oil | 20 |
| Fire retardant | 40 |
| Antioxidant 1010 | 0.3 |
| Light stabilizer 531 | 0.3 |
| Lubricant polyethylene wax | 0.8 |
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
5~8g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the naphthenic oil are 120~200.The fire retardant is ten
Bromine diphenylethane, antimony oxide.
Embodiment 3 changes the type of crosslinking agent, cross-linking aid, cross-linked accelerating agent for irradiation compared to embodiment 2, and changes
The type of fire retardant is become.
Specific preparation method, technical parameter are the same as embodiment 1.
Embodiment 4
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 4:
Table 4
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
3~6g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the paraffin oil are 80~120.The fire retardant is ten
Bromine diphenylethane, antimony oxide.
Embodiment 4 changes linear low density polyethylene, the type of fire retardant compared to embodiment 2, and white oil selects paraffin oil
Naphthenic oil is replaced, the replacement of light stabilizer 326 531 is selected.
Specific preparation method, technical parameter are the same as embodiment 1.
Embodiment 1,2,3,4, which mainly illustrates, selects the different raw material trades mark to the shadow of product mechanical property and ageing-resistant performance
It rings, performance is compared, the results are shown in Table 5:
Table 5
As comparison it is found that material physical property made from the ethylene propylene diene rubber for selecting Mooney viscosity high is more preferable, and hands over
It is good that the group of connection agent and cross-linking aid is combined into tert-butylperoxy isopropyl carbonate, diphenyl-methane maleimide vulcanization effect, makes
Use trimethylol-propane trimethacrylate as cross-linked accelerating agent for irradiation, paraffin oil as filling oil, antioxidant 1010, light
Stabilizer 326, property retention rate of the material after hot air aging, light aging obtained is relatively high after being irradiated.Fire retardant choosing
It is preferable with decabromodiphenylethane, antimony oxide combination anti-flammability, it can achieve V0 rank, but there is certain applications occasion not allow
Contain halogen in material, so when fire retardant selects melamine cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate combination,
Retardant load level need to be increased, can be only achieved better flame retardant effect.
Embodiment 5
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 6:
Table 6
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
3~6g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the paraffin oil are 80~120.The fire retardant is three
Poly cyanamid cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate.
Embodiment 5 reduces polyolefin resin number compared to embodiment 4, and increases metallocene-polyolefin resin, white oil
Number.Fire retardant selects halogen-free flame retardants, and increases additional amount.
Specific preparation method, technical parameter are the same as embodiment 1.
Embodiment 6
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 7:
Table 7
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
3~6g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the paraffin oil are 80~120.The fire retardant is three
Poly cyanamid cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate.
Embodiment 6 reduces ethylene propylene diene rubber number compared to embodiment 5, increases metallocene-polyolefin resin, irradiation is handed over
Join the number of promotor, white oil.
Specific preparation method, technical parameter are the same as embodiment 1.
Embodiment 7
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 8:
Table 8
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
3~6g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the paraffin oil are 80~120.The fire retardant is three
Poly cyanamid cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate.
Embodiment 7 increases part of synthetic rubber, metallocene-polyolefin resin, cross-linked accelerating agent for irradiation compared to embodiment 6
Number.
Specific preparation method, technical parameter are the same as embodiment 1.
Embodiment 8
A kind of fire-retardant TPV method for producing elastomers can be used for cross-linking radiation, composition of raw materials is such as in parts by weight
Shown in table 9:
Table 9
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.It is described linear low
3~6g/10min of density polyethylene melt index.40 DEG C of kinematic viscosity of the paraffin oil are 80~120.The fire retardant is three
Poly cyanamid cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate.
Embodiment 8 increases the number of crosslinking agent, white oil compared to embodiment 7.
Specific preparation method, technical parameter are the same as embodiment 1.
To product mechanical property, resistance in the case that the main elaboration raw material trade mark of embodiment 5,6,7,8 is identical, proportion is different
The influence of combustion property and ageing-resistant performance, performance is compared, the results are shown in Table 10:
Table 10
By comparison it is found that when using halogen-free flame retardants, after the additional amount for increasing fire retardant, the fire-retardant rank of material can
Reach UL94V0 grades, and in adjustment formula when various composition ratio, it is more excellent that embodiment 8 matches lower material comprehensive performance.
Comparative example 1
General T PV method for producing elastomers, composition of raw materials is as shown in table 11 in parts by weight:
Table 11
| Raw material title | Parts by weight |
| Synthetic rubber ethylene propylene diene rubber | 50 |
| Polyolefin resin polypropylene | 35 |
| Crosslinking agent tert-butylperoxy isopropyl carbonate | 0.3 |
| Cross-linking aid diphenyl-methane maleimide | 1 |
| White oil paraffin oil | 25 |
| Inorganic filler calcium carbonate | 15 |
| Antioxidant 1010 | 0.5 |
| Light stabilizer 326 | 0.5 |
| Lubricant polyethylene wax | 0.8 |
Wherein: the ethylene propylene diene rubber Mooney viscosity is 65~75, and ethylene contents are 60~75%, and Third monomer is second
Pitching norbornene content is 4~8%.The polypropylene is Noblen, 2~4g/10min of melt index.The paraffin oil
40 DEG C of kinematic viscosity are 80~120.
Metallocene-polyolefin resin, cross-linked accelerating agent for irradiation is not added compared to embodiment 8 in comparative example 1.
Specific step is as follows:
A), appropriate ethylene propylene diene rubber, polyolefin resin, inorganic filler are weighed by component requirements, in a high speed mixer
After mixing, through double screw extruder extruding pelletization, intermediate 1 is obtained；
B), crosslinking agent and assistant crosslinking agent is added in the resulting intermediate 1 of step A), is uniformly mixed through high-speed mixer,
Dynamic vulcanization is granulated in double screw extruder, in granulation process, white oil is added by liquid spout, TPV elastomer is made
Particle 1.
Wherein: the double-screw extruder screw diameter is 75mm, and draw ratio 52, temperature controlling range process conditions are
160~200 DEG C of temperature, 200~320rpm of revolving speed.
Above-mentioned general T PV elastomer 1 is molded to the print of thickness 3mm using vertical injection molding machine under the conditions of 200 DEG C, then
The hardness for measuring material, prepares batten using universal sampling machine, measures the tensile strength of material, elongation at break and fire-retardant etc.
Grade.
Fire retardant, and the step of without carrying out cross-linking radiation is not added compared to embodiment 8 in comparative example 1.
Comparative example 2
125 DEG C of charging pile preparation methods of TPE protective cover material of cross-linking radiation, in parts by weight composition of raw materials such as table 12
It is shown:
Table 12
Wherein: the synthetic rubber is SEBS 6154.The polypropylene is Noblen, 2~4g/ of melt index
10min.1~3g/10min of the high density polyethylene (HDPE) melt index.3~6g/ of the linear low density polyethylene melt index
10min.40 DEG C of kinematic viscosity of the paraffin oil are 80~120.
Specific step is as follows:
It is first first that SEBS saturation type polystyrene elastomers are oil-filled with white oil, then oil will be charged using mixed at high speed cylinder
SEBS saturation type polystyrene elastomers and polyolefin resin, metallocene-polyolefin resin, TPV elastomer, P-N type fire retardant,
Primary antioxidant, auxiliary antioxidant, talcum powder, cross-linked accelerating agent for irradiation, organo-silicic oil are mixed, then are squeezed by twin-screw
Granulation is blended in machine under 170~190 DEG C of technique out, cross-linking radiation 125 DEG C of charging piles TPE protective cover material finished product.
125 DEG C of charging piles of above-mentioned cross-linking radiation are molded thickness using vertical injection molding machine with TPE protective cover material under the conditions of 200 DEG C
The print for spending 3mm, is crosslinked, irradiation dose 15M rad through ultraviolet light irradiation cross-linking apparatus.Then the hardness of material is measured,
Batten is prepared using universal sampling machine, measures tensile strength, elongation at break and the flame retardant rating of material.
Embodiment 8 and comparative example 1,2 performance detection of comparative example are compared, as a result as shown in table 13:
Table 13
As can be seen from the table, irradiation cross-linking flame-retardant TPV elastomer is compared with general T PV elastomer, cross-linking radiation TPE,
Mechanical property is not decreased obviously, after long and short period high temperature ageing and light aging, intensity and elongation at break conservation rate
With apparent advantage, fire-retardant TPV elastomer heatproof, weatherability are improved by a relatively large margin.And using Halogen or there is halogen resistance
It can achieve preferable flame retardant effect when firing agent.
Finally, it should be noted that above embodiments are only to illustrate the present invention and not limit technology described in the invention
Scheme；Therefore, although this specification is referring to above-mentioned each embodiment, the present invention has been described in detail, this
Field it is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent replacement；And all do not depart from this
The technical solution and its improvement of the spirit and scope of invention, should all cover within the scope of the claims of the present invention.
Claims (10)
1. a kind of fire-retardant TPV elastomer that can be used for cross-linking radiation, which is characterized in that be made from the following raw materials in parts by weight:
2. the fire-retardant TPV elastomer according to claim 1 that can be used for cross-linking radiation, which is characterized in that the crosslinking agent
For one of tert-butylperoxy isopropyl carbonate, cumyl peroxide or octyl phenolic or a variety of combinations；Institute
Stating assistant crosslinking agent is one of diphenyl-methane maleimide, triisopropyl isocyanates or stannous chloride or a variety of groups
It closes.
3. the fire-retardant TPV elastomer according to claim 1 that can be used for cross-linking radiation, which is characterized in that the synthesis rubber
Glue is ethylene propylene diene rubber.
4. the fire-retardant TPV elastomer according to claim 3 that can be used for cross-linking radiation, which is characterized in that the ternary second
The Mooney viscosity of third rubber is 20~130, and ethylene contents are 50~75%, and Third monomer is ethylidene norbornene or bicyclic penta 2
Alkene and content are 4~20%.
5. the fire-retardant TPV elastomer according to claim 1 that can be used for cross-linking radiation, which is characterized in that the polyolefin
Resin is polyethylene, polypropylene or polyethylene and polyacrylic mixture.
6. the fire-retardant TPV elastomer according to claim 1 that can be used for cross-linking radiation, which is characterized in that the fire retardant
For melamine cyanurate, hypo-aluminum orthophosphate, aluminum diethylphosphinate, decabromodiphenylethane, one kind of antimony oxide or more
The combination of kind.
7. the fire-retardant TPV elastomer according to claim 1 that can be used for cross-linking radiation, which is characterized in that the metallocene
Polyolefin resin is one or two kinds of combinations of metallocene PE, metallocene polypropylene.
8. the fire-retardant TPV elastomer according to claim 1 that can be used for cross-linking radiation, which is characterized in that the irradiation is handed over
Connection promotor is trimethylol-propane trimethacrylate, trimethylolpropane trimethacrylate, allyl methacrylate
One or more combinations.
9. a kind of such as described in any item fire-retardant TPV method for producing elastomers that can be used for cross-linking radiation of claim 1-8,
It is characterized in that, includes the following steps:
A), appropriate ethylene propylene diene rubber, polyolefin resin, inorganic filler are weighed by component requirements, mixed in a high speed mixer
After uniformly, through double screw extruder extruding pelletization, intermediate is obtained；
B), crosslinking agent and assistant crosslinking agent is added in the resulting intermediate of step A), is uniformly mixed through high-speed mixer, in twin-screw
Dynamic vulcanization is granulated in extruder, in granulation process, white oil is added by liquid spout, TPV elastomer particles are made；
C), by the resulting TPV elastomer particles of step B) and metallocene-polyolefin resin, cross-linked accelerating agent for irradiation in mixed at high speed
In machine after mixing, adding antioxidant, lubricant, light stabilizer etc. to be made after double screw extruder extruding pelletization can be used for spoke
According to the TPV elastomer of crosslinking.
10. the fire-retardant TPV method for producing elastomers according to claim 9 that can be used for cross-linking radiation, which is characterized in that
The double screw extruder process conditions are 160~220 DEG C of temperature, 200~320rpm of revolving speed；It can be used for cross-linking radiation for above-mentioned
Fire-retardant TPV elastomer the print of thickness 3mm is molded under the conditions of 200 DEG C using vertical injection molding machine, measure the hardness of material, adopt
Batten is prepared with universal sampling machine, measures tensile strength, elongation at break and the flame retardant rating of material.
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