CN106751373A - A kind of high-strength halogen-free flame-retardant thermoplastic elastomer and preparation method thereof - Google Patents
A kind of high-strength halogen-free flame-retardant thermoplastic elastomer and preparation method thereof Download PDFInfo
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- CN106751373A CN106751373A CN201710071800.6A CN201710071800A CN106751373A CN 106751373 A CN106751373 A CN 106751373A CN 201710071800 A CN201710071800 A CN 201710071800A CN 106751373 A CN106751373 A CN 106751373A
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- C08L2201/22—Halogen free composition
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a kind of high-strength halogen-free flame-retardant thermoplastic elastomer and preparation method thereof, basic recipe and weight are than composition：Styrenic elastomer 20 ~ 30%, thermoplastic polyurethane 15 ~ 25%, ethylene propylene diene rubber 5 ~ 15%, halogen-free flame retardants 8 ~ 15%, fire retarding synergist 10 ~ 18%, filling oil 15 ~ 25%, antioxidant 0.5 ~ 1.5%, lubricant 0.2 ~ 2%.The preparation method is that will it is well mixed after material feeding double screw extruder loading hopper in, through twin-screw high speed shear, extrusion, tie rod, cooling, granulation.High-strength halogen-free flame-retardant thermoplastic elastomer prepared by the present invention, intensity is high, and fire resistance is good, simple production process, environment-protecting asepsis, it is adaptable to the field such as electric wire, electronic apparatus.
Description
Technical field
The present invention relates to thermoplastic elastomer (TPE) field, more particularly to a kind of high-strength halogen-free flame-retardant thermoplastic elastomer and its
Preparation method.
Background technology
In recent years European Union release one after another ROHS instruction, WEEE instruction, REACH instruction and EuP instruction etc. dependent instruction, EuP
Command request must is fulfilled for Halogen-free requirement into the product of EU market, thus halogen-free environmental plastics have become Plastics Development
Direction, market development prospect is open.
Thermoplastic elastomer (TPE)（TPE）It is a kind of high resiliency with rubber, high resilience, and with can injection molding feature
Material.It has the advantages that environment friendly and pollution-free, applied widely, elastic good, soft-touch.
However, the anti-flammability of thermoplastic elastomer (TPE) is poor, once burning, flame is very violent and with strong black smoke,
Simultaneously with serious molten drop phenomenon, there is the risk for expanding the fire intensity of a fire.Therefore, a kind of high intensity, halogen-free flameproof are developed
Thermoplastic elastomer (TPE), with good practical value.
The content of the invention
The present invention is in view of the shortcomings of the prior art, there is provided a kind of high-strength halogen-free flame-retardant thermoplastic elastomer, its
Intensity is high, and fire resistance is good, environment-protecting asepsis.
Meanwhile, present invention also offers a kind of preparation method of high-strength halogen-free flame-retardant thermoplastic elastomer.
To reach above-mentioned purpose, the present invention is achieved by the following technical solutions：
A kind of high-strength halogen-free flame-retardant thermoplastic elastomer, basic recipe and weight are than composition：
Styrenic elastomer 20 ~ 30%
Thermoplastic polyurethane 15 ~ 25%
Ethylene propylene diene rubber 5 ~ 15%
Halogen-free flame retardants 8 ~ 15%
Fire retarding synergist 10 ~ 18%
Filling oil 15 ~ 25%
Antioxidant 0.5 ~ 1.5%
Lubricant 0.2 ~ 2%.
Preferably, described styrenic elastomer is SBS, hydrogenation saturation
At least one in thermoplastic styrene-butadiene block copolymer.
Preferably, the thermoplastic polyurethane be in polyether thermoplastic polyurethane and polyester-type thermoplastic polyurethane extremely
Few one kind.
Preferably, the halogen-free flame retardants is aluminium hydroxide, magnesium hydroxide, melamine polyphosphate and diethyl time phosphorus
At least one in hydrochlorate.
Preferably, the fire retarding synergist is at least one in Firebrake ZB and rare earth.
Preferably, at least in saturated straight chain alkane oil and naphthenic oil of the filling oil for flash-point higher than 200 DEG C
Kind.
Preferably, the antioxidant is at least one in antioxidant 1010, antioxidant 1076 and antioxidant 1098.
The preparation method of above-mentioned high-strength halogen-free flame-retardant thermoplastic elastomer, the processing step that it is prepared is as follows：
（1）The material in composition of raw materials is weighed by weight ratio；
（2）Styrenic elastomer, thermoplastic polyurethane, ethylene propylene diene rubber are mixed 20 ~ 40 minutes with filling oil, then will
Remaining material is mixed together 10 ~ 30 minutes in adding batch mixer, discharges；
（3）During mixed material sent into double screw extruder loading hopper, through twin-screw high speed shear, extrusion, tie rod, cold
But, granulate；The area's temperature for setting double screw extruder is 130 ~ 160 DEG C, and two area's temperature are 180 ~ 210 DEG C, and three area's temperature are
210 ~ 230 DEG C, four area's temperature are 230 ~ 260 DEG C, and five area's temperature are 190 ~ 230 DEG C, and head temperature is 150 ~ 190 DEG C, feeding speed
It is 200 ~ 500 revs/min to spend, and screw speed is 150 ~ 500 revs/min.
Beneficial effects of the present invention：
High-strength halogen-free flame-retardant thermoplastic elastomer prepared by the present invention, compatibility is good between each component, processing characteristics is excellent.It is fire-retardant
Property can reach the thickness that is measured according to UL94 for the V-0 of 3.0mm burns grade, and without halogen and heavy metal, be especially free of
Lead, mercury, cadmium, Cr VI heavy metal, and poly- dibromodiphenyl ether and poly- bromo biphenyl.Simple production process of the present invention, environment-protecting asepsis are fitted
For fields such as electric wire, electronic apparatus.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
A kind of high-strength halogen-free flame-retardant thermoplastic elastomer, basic recipe and weight are than composition：
Styrenic elastomer 20 ~ 30%, thermoplastic polyurethane 15 ~ 25%, ethylene propylene diene rubber 5 ~ 15%, halogen-free flame retardants 8 ~
15%, fire retarding synergist 10 ~ 18%, filling oil 15 ~ 25%, antioxidant 0.5 ~ 1.5%, lubricant 0.2 ~ 2%.
Wherein, described styrenic elastomer is SBS, hydrogenation saturation heat
At least one in plasticity styrene-butadiene block copolymer, the thermoplastic polyurethane is polyether thermoplastic polyurethane
With at least one in polyester-type thermoplastic polyurethane, the halogen-free flame retardants is aluminium hydroxide, magnesium hydroxide, melamine gather
At least one in phosphate and diethyl hypophosphites, the fire retarding synergist is at least one in Firebrake ZB and rare earth,
The filling oil is higher than at least one in 200 DEG C of saturated straight chain alkane oil and naphthenic oil for flash-point, and the antioxidant is
At least one in antioxidant 1010, antioxidant 1076 and antioxidant 1098.
The processing step of preparation is as follows：
（1）The material in composition of raw materials is weighed by weight ratio；
（2）Styrenic elastomer, thermoplastic polyurethane, ethylene propylene diene rubber are mixed 20 ~ 40 minutes with filling oil, then will
Remaining material is mixed together 10 ~ 30 minutes in adding batch mixer, discharges；
（3）During mixed material sent into double screw extruder loading hopper, through twin-screw high speed shear, extrusion, tie rod, cold
But, granulate；The area's temperature for setting double screw extruder is 130 ~ 160 DEG C, and two area's temperature are 180 ~ 210 DEG C, and three area's temperature are
210 ~ 230 DEG C, four area's temperature are 230 ~ 260 DEG C, and five area's temperature are 190 ~ 230 DEG C, and head temperature is 150 ~ 190 DEG C, feeding speed
It is 200 ~ 500 revs/min to spend, and screw speed is 150 ~ 500 revs/min.
High-strength halogen-free flame-retardant thermoplastic elastomer prepared by the present invention, its intensity is high, and fire resistance is good, environment-protecting asepsis.
Embodiment 1
High-strength halogen-free flame-retardant thermoplastic elastomer of the invention, basic recipe and weight are than composition：Styrenic elastomer
30%, thermoplastic polyurethane 25%, ethylene propylene diene rubber 11%, halogen-free flame retardants 8%, fire retarding synergist 10%, filling oil 15%, antioxygen
Agent 0.5%, lubricant 0.5%.
The processing step of preparation is as follows:
（1）The material in composition of raw materials is weighed by weight ratio；
（2）It is SBS, polyether thermoplastic polyurethane, three by styrenic elastomer
First EP rubbers mixes 20 minutes with saturated straight chain alkane oil and naphthenic oil, then by one in remaining material addition batch mixer
Play mixing 10 minutes, discharging；
（3）During mixed material sent into double screw extruder loading hopper, through twin-screw high speed shear, extrusion, tie rod, cold
But, granulate；The area's temperature for setting double screw extruder is 130 DEG C, and two area's temperature are 180 DEG C, and three area's temperature are 210 DEG C, four
Area's temperature is 230 DEG C, and five area's temperature are 190 DEG C, and head temperature is 150 DEG C, and rate of feeding is 200 revs/min, and screw speed is
150 revs/min.
Embodiment 2
High-strength halogen-free flame-retardant thermoplastic elastomer of the invention, basic recipe and weight are than composition：Styrenic elastomer
20%, thermoplastic polyurethane 15%, ethylene propylene diene rubber 5%, halogen-free flame retardants 15%, fire retarding synergist 18%, filling oil 25%, antioxygen
Agent 1.5%, lubricant 0.5%.
The processing step of preparation is as follows:
（1）The material in composition of raw materials is weighed by weight ratio；
（2）It is hydrogenation saturation thermoplastic styrene-butadiene block copolymer, polyester-type thermoplastic poly by styrenic elastomer
Urethane, ethylene propylene diene rubber mix 40 minutes with saturated straight chain alkane oil and naphthenic oil, then add remaining material mixed
It is mixed together in material machine 30 minutes, is discharged；
（3）During mixed material sent into double screw extruder loading hopper, through twin-screw high speed shear, extrusion, tie rod, cold
But, granulate；The area's temperature for setting double screw extruder is 160 DEG C, and two area's temperature are 210 DEG C, and three area's temperature are 230 DEG C, four
Area's temperature is 260 DEG C, and five area's temperature are 230 DEG C, and head temperature is 190 DEG C, and rate of feeding is 500 revs/min, and screw speed is
500 revs/min.
Embodiment 3
High-strength halogen-free flame-retardant thermoplastic elastomer of the invention, basic recipe and weight are than composition：Styrenic elastomer
25%, thermoplastic polyurethane 20%, ethylene propylene diene rubber 10%, halogen-free flame retardants 8%, fire retarding synergist 15%, filling oil 20%, antioxygen
Agent 1%, lubricant 1%.
The processing step of preparation is as follows:
（1）The material in composition of raw materials is weighed by weight ratio；
（2）It is hydrogenation saturation thermoplastic styrene-butadiene block copolymer, polyester-type thermoplastic poly by styrenic elastomer
Urethane, ethylene propylene diene rubber mix 30 minutes with saturated straight chain alkane oil and naphthenic oil, then add remaining material mixed
It is mixed together in material machine 20 minutes, is discharged；
（3）During mixed material sent into double screw extruder loading hopper, through twin-screw high speed shear, extrusion, tie rod, cold
But, granulate；The area's temperature for setting double screw extruder is 145 DEG C, and two area's temperature are 190 DEG C, and three area's temperature are 220 DEG C, four
Area's temperature is 245 DEG C, and five area's temperature are 220 DEG C, and head temperature is 170 DEG C, and rate of feeding is 350 revs/min, and screw speed is
400 revs/min.
Embodiment 4
High-strength halogen-free flame-retardant thermoplastic elastomer of the invention, basic recipe and weight are than composition：Styrenic elastomer
20%, thermoplastic polyurethane 25%, ethylene propylene diene rubber 15%, halogen-free flame retardants 10%, fire retarding synergist 10%, filling oil 18% resists
Oxygen agent 1%, lubricant 2%.
The processing step of preparation is as follows:
（1）The material in composition of raw materials is weighed by weight ratio；
（2）It is SBS, polyester-type thermoplastic polyurethane, three by styrenic elastomer
First EP rubbers mixes 20 minutes with saturated straight chain alkane oil and naphthenic oil, then by one in remaining material addition batch mixer
Play mixing 30 minutes, discharging；
（3）During mixed material sent into double screw extruder loading hopper, through twin-screw high speed shear, extrusion, tie rod, cold
But, granulate；The area's temperature for setting double screw extruder is 130 DEG C, and two area's temperature are 180 DEG C, and three area's temperature are 230 DEG C, four
Area's temperature is 250 DEG C, and five area's temperature are 210 DEG C, and head temperature is 150 DEG C, and rate of feeding is 200 revs/min, and screw speed is
300 revs/min.
Comparative example 1
From unlike embodiment 1 to 4, in comparative example 1, modifying process is not added with fire retardant, and other conditions are constant.
Comparative example 2
From unlike embodiment 1 to 4, in comparative example 2, modifying process is not added with fire retarding synergist, and other conditions are constant.
Performance test
Performance test is carried out to the thermoplastic elastomer (TPE) as obtained in above-mentioned each formula, as a result as shown in table 1：
Table 1
From table 1 it follows that comparative example 1-4 and comparative example 1-2, the fire resistance of embodiment 1-4 is significantly improved.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make various deformations or amendments, this not shadow
Sound substance of the invention.
Claims (8)
1. a kind of high-strength halogen-free flame-retardant thermoplastic elastomer, it is characterised in that basic recipe and weight are than composition：
Styrenic elastomer 20 ~ 30%
Thermoplastic polyurethane 15 ~ 25%
Ethylene propylene diene rubber 5 ~ 15%
Halogen-free flame retardants 8 ~ 15%
Fire retarding synergist 10 ~ 18%
Filling oil 15 ~ 25%
Antioxidant 0.5 ~ 1.5%
Lubricant 0.2 ~ 2%.
2. thermoplastic elastomer (TPE) according to claim 1, it is characterised in that：Described styrenic elastomer is benzene second
At least one in alkene-butadiene-styrene block copolymer, hydrogenation saturation thermoplastic styrene-butadiene block copolymer.
3. thermoplastic elastomer (TPE) according to claim 1, it is characterised in that：The thermoplastic polyurethane is polyether-type thermoplastic
At least one in property polyurethane and polyester-type thermoplastic polyurethane.
4. thermoplastic elastomer (TPE) according to claim 1, it is characterised in that：The halogen-free flame retardants is aluminium hydroxide, hydrogen
At least one in magnesia, melamine polyphosphate and diethyl hypophosphites.
5. thermoplastic elastomer (TPE) according to claim 1, it is characterised in that：The fire retarding synergist is Firebrake ZB and rare earth
In at least one.
6. thermoplastic elastomer (TPE) according to claim 1, it is characterised in that：The filling oil is flash-point higher than 200 DEG C
At least one in saturated straight chain alkane oil and naphthenic oil.
7. thermoplastic elastomer (TPE) according to claim 1, it is characterised in that：The antioxidant is antioxidant 1010, antioxygen
At least one in agent 1076 and antioxidant 1098.
8. the preparation method of the high-strength halogen-free flame-retardant thermoplastic elastomer according to any one of claim 1 ~ 7, its feature
It is that the processing step for preparing is as follows：
（1）The material in composition of raw materials is weighed by weight ratio；
（2）Styrenic elastomer, thermoplastic polyurethane, ethylene propylene diene rubber are mixed 20 ~ 40 minutes with filling oil, then will
Remaining material is mixed together 10 ~ 30 minutes in adding batch mixer, discharges；
（3）During mixed material sent into double screw extruder loading hopper, through twin-screw high speed shear, extrusion, tie rod, cold
But, granulate；The area's temperature for setting double screw extruder is 130 ~ 160 DEG C, and two area's temperature are 180 ~ 210 DEG C, and three area's temperature are
210 ~ 230 DEG C, four area's temperature are 230 ~ 260 DEG C, and five area's temperature are 190 ~ 230 DEG C, and head temperature is 150 ~ 190 DEG C, feeding speed
It is 200 ~ 500 revs/min to spend, and screw speed is 150 ~ 500 revs/min.
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| CN201710071800.6A CN106751373A (en) | 2017-02-09 | 2017-02-09 | A kind of high-strength halogen-free flame-retardant thermoplastic elastomer and preparation method thereof |
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| CN201710071800.6A CN106751373A (en) | 2017-02-09 | 2017-02-09 | A kind of high-strength halogen-free flame-retardant thermoplastic elastomer and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108395728A (en) * | 2018-02-01 | 2018-08-14 | 天津科创复兴科技咨询有限公司 | A kind of halogen-free combustion-proof thermoplastic TPE material and its preparation method and application |
| CN114573977A (en) * | 2022-03-14 | 2022-06-03 | 乐庭电线工业（惠州）有限公司 | High-temperature irradiation resistant crosslinked TPU (thermoplastic polyurethane) sheath material, preparation method thereof and cable |
| CN114634686A (en) * | 2022-04-06 | 2022-06-17 | 上海长园电子材料有限公司 | High-low temperature resistant dynamic bending flame-retardant heat-shrinkable sleeve and preparation method thereof |
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| CN105038088A (en) * | 2015-08-21 | 2015-11-11 | 中广核三角洲（苏州）高聚物有限公司 | Elastomer cable material for oil-resistant cold-resistant high-temperature-resistant electric automobile charge piles and preparation method thereof |
| CN106280405A (en) * | 2016-08-31 | 2017-01-04 | 苏州亨利通信材料有限公司 | Easily processing halogen-free fire retardation thermoplastic polyurethane elastomer and preparation method thereof |
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| CN102816427A (en) * | 2012-09-06 | 2012-12-12 | 北京化工大学 | High-flame-retardance high-heat-resistance halogen-free flame-retardant thermoplastic polyurethane elastomer cable material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108395728A (en) * | 2018-02-01 | 2018-08-14 | 天津科创复兴科技咨询有限公司 | A kind of halogen-free combustion-proof thermoplastic TPE material and its preparation method and application |
| CN114573977A (en) * | 2022-03-14 | 2022-06-03 | 乐庭电线工业（惠州）有限公司 | High-temperature irradiation resistant crosslinked TPU (thermoplastic polyurethane) sheath material, preparation method thereof and cable |
| CN114573977B (en) * | 2022-03-14 | 2024-02-09 | 乐庭电线工业（惠州）有限公司 | High-temperature-radiation-resistant crosslinked TPU sheath material, preparation method thereof and cable |
| CN114634686A (en) * | 2022-04-06 | 2022-06-17 | 上海长园电子材料有限公司 | High-low temperature resistant dynamic bending flame-retardant heat-shrinkable sleeve and preparation method thereof |
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Application publication date: 20170531 |