CN106674788A - Flame-retardant thermoplastic elastomer alloy material and preparation method thereof - Google Patents
Flame-retardant thermoplastic elastomer alloy material and preparation method thereof Download PDFInfo
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- CN106674788A CN106674788A CN201611105070.9A CN201611105070A CN106674788A CN 106674788 A CN106674788 A CN 106674788A CN 201611105070 A CN201611105070 A CN 201611105070A CN 106674788 A CN106674788 A CN 106674788A
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- thermoplastic elastomer
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
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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
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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
Abstract
The invention provides a flame-retardant thermoplastic elastomer alloy material and a preparation method thereof. The flame-retardant thermoplastic elastomer alloy material is prepared from the following components in parts by weight: 10 to 40 parts of thermoplastic elastomer, 41 to 89 parts of styrol copolymer, 0 to 3 parts of compatilizer, 7 to 20 parts of flame retardant, 0.5 to 4 parts of processing lubricant, 0.2 to 0.5 part of antioxygen, 0.3 to 1.5 parts of light stabilizer, and 0 to 10 parts of filler. The elastomer alloy material provided by the invention has the characteristics of lower dielectric constant and dielectric loss, excellent weather fastness, favorable flame retardant property, balanced mechanical property and the like, can meet the operating requirements on injection molding or extruding, and is particularly suitable for the fields such as outdoor fields, communication antenna, garden equipment and the like having higher requirements on material wave transmissivity or/and aging property.
Description
Technical field
The invention belongs to polymeric material field, more particularly, to a kind of flame retardant thermoplastic elastomer alloy material and its system
Preparation Method.
Background technology
Communication system is to be launched electromagnetic wave signal come transmission information day using radiation components such as the oscillators in antenna
The engineerings such as radio communication, broadcast/TV, radar, navigation, electronic countermeasure, remote sensing, radio astronomy, the WIFI touched in often
System belongs to communication system.Antenna plays central role in whole communication system, during antenna installation and use,
In order to protect radiation component not by external world or interference, generally also protective housing is provided with outside radiation component, is utilized
The housing is surrounded radiation component to play a protective role.In order to play the maximum effect of antenna, it is desirable to antenna casing pair
The transmission of electromagnetic wave affects as little as possible, therefore the material to shell selects the electricity function index value for needing to consider material, example
Such as, dielectric constant, tangent angle loss value etc., sheathing material relative dielectric constant is bigger, then electromagnetic wave is in air and antenna casing
Reflection on interface is bigger, and this will reduce electromagnetic transmission efficiency；Loss angle tangent tg δ is bigger, and electromagnetic wave is penetrating day
The energy for being converted into heat and being lost in line shell procedure is more.Further, since the use environment of some antennas is in open air,
Therefore higher requirement is proposed to the ageing properties of sheathing material.
At present communication antenna sheathing material is broadly divided into thermosets and thermoplastic, and thermosets is mainly used
Unsaturated polyester resin, epoxy resin, phenolic resin, vinylite etc. are composited with glass fibre, thermosets machine
Tool intensity is higher, weather resistance preferably, the advantages of dimensional stability is preferable；But the general density of thermosets is higher, shell
Overall weight heavier (density 1.7-2.0g/cm3), dielectric constant higher (4.0-5.5), it is impossible to recycle and reuse is warm in addition
The outer casing forming of solidity class is complicated, and integrated cost is higher and forming process pollutes larger, the defect such as larger to Health Impact.
The maximum also the most frequently used antenna casing thermoplastic of consumption is mainly PVC classes, and polyvinyl chloride (PVC) material is at present using most
For one of extensive plastic material, it has, and low price, soft or hard are adjustable, fire resistance is good, resistance to chemical attack is good, electric property
Excellent the advantages of, apply on antenna casing weight relatively light (density 1.4-1.65g/cm3), weatherability preferably, it is comprehensive into
The advantages of this is relatively low.Although PVC material has many advantages, such as, heat-resisting poor (60 DEG C or so of heat distortion temperature) is there is also,
Dielectric constant of a relatively high (3-4.8), intensity is relatively low, and true qualities contain the defects such as halogen.Additionally, antenna casing material is conventional
Thermoplastic also comprising the material such as ABS, ASA, HIPS, PP, ABS, PS material dielectric constant is 2.8-3.0, low price,
Due to containing unsaturated double-bond in molecular structure itself, therefore it is not suitable for using out of doors.ASA has excellent weather resistance, and is outdoor answering
Preferred material, but ASA dielectric constants are between 2.8-3.3 and relatively costly, which limits it makes on a large scale
With.PP material dielectric constants are 2.2 or so, and density is low, with low cost, but intensity is relatively low, aging is poor, also limit it
Use.
At present, the material of communication antenna shell is toward low-k, high durable, low weight, environmental protection, recyclable, resistance
The directions such as combustion are developed, and at present existing thermosetting or thermoplastic more or less all have certain defect.With communication row
The fast development of industry, the either spread speed and quality requirement more and more higher of State-level or ordinary consumer to signal, because
This, exploitation wave transparent performance is good, high durable, the antenna casing material of the environmental protection with anti-flaming function have important economic valency
Value and social effect.
The content of the invention
In view of this, it is contemplated that proposing a kind of flame retardant thermoplastic elastomer alloy material and preparation method thereof, to solve
The dielectric constant that the conventional thermosets of certainly current communications industry antenna casing material is present is big compared with high, density, not environmentally etc.
Defect and PVC material temperature tolerance are poor, dielectric loss is big, it is halogen the problems such as and other thermoplastic performances cannot be taken into account respectively simultaneously
The technical problems such as aspect performance.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of flame retardant thermoplastic elastomer alloy material, is made up of the component including following parts by weight：
Further, the thermoplastic elastomer (TPE) is based on conjugated diene monomeric unit and alkenyl aromatic monomers unit
The block copolymer of body；
Preferably, the conjugated diene monomeric unit is butadiene or isoprene, the alkenyl aromatic monomers list
Unit is styrene, AMS or p-methylstyrene；
It is highly preferred that the alkenyl aromatic monomers unit is styrene.
Further, the content of the alkenyl aromatic monomers unit is the 5wt%- of block copolymer gross weight
70wt%, it is preferable that the content of the alkenyl aromatic monomers unit is the 18wt%- of block copolymer gross weight
45wt%.
Further, the hydrogenation ratio of the unsaturated double-bond in the thermoplastic elastomer (TPE) is more than 85%；Preferably, it is described
The hydrogenation ratio of the unsaturated double-bond in thermoplastic elastomer (TPE) is more than 93%；It is highly preferred that in the thermoplastic elastomer (TPE) not
The hydrogenation ratio of saturation double bond is more than 96%.
Further, the styrol copolymer is the General Purpose Polystyrenre that styrene monomer synthesis is obtained, described logical
Melt-flow coefficient with polystyrene under the conditions of 200 DEG C/5kg is 2-20g/10min, it is preferable that the general purpose grade is gathered
Under the conditions of 200 DEG C/5kg, melt-flow coefficient is 2-8g/10min to styrene.
Further, the compatilizer is that conjugated diene monomeric unit and alkenyl aromatic monomers unit are the embedding of main body
Section copolymer, the conjugated diene monomeric unit of maleic anhydride grafting and the block copolymerization that alkenyl aromatic monomers unit is main body
Thing, maleic anhydride units and alkenyl aromatic monomers unit are the mixed of one or more in the block copolymer of main body
Compound.
Further, the fire retardant is in environmentally friendly bromide fire retardant, antimony system fire retarding synergist or phosphate ester flame retardants
One or more mixture；Preferably, the environmentally friendly bromide fire retardant is TDE, brominated triazine or bromine
Change one or more the mixture in epoxy, antimony system fire retarding synergist is stibium trioxide；The phosphate ester flame retardants
For triphenyl phosphate or diphenyl phosphoester.
Further, the lubricant is stearic acid lubricant, polyethylene kind lubricant, ester lubricant, stone
One or more mixture in wax class lubricant, acid amides series lubricant agent.
Further, the antioxidant is Hinered phenols primary antioxidant, phosphorous acid lipid auxiliary antioxidant or primary antioxidant
One or more mixture in the composite antioxidant obtained with auxiliary antioxidant compounding.
Further, the light stabilizer is hindered benzoic acids esters light stabilizer, hindered amine light stabilizer, benzo three
One or more mixture in azole light stabilizer, benzophenone light stabilizer.
Further, described filler be barium sulfate, talcum powder, calcium carbonate, titanium dioxide, kaolin in one or two with
On mixture.
The preparation method of above-mentioned flame retardant thermoplastic elastomer alloy material, comprises the steps：The each component for weighing is added
Enter high mixer premix 5-15min, the plasticizing of Jing double screw extruders, extrusion pelletizing obtain the alloy material.
Further, the screw slenderness ratio of the double screw extruder is 10：1-40：1, the double screw extruder it is each
Section extruder temperature is 180-220 DEG C, and screw speed is 300-500rpm, and feeding rotating speed is 300-500rpm, it is preferable that described double
The screw slenderness ratio of screw extruder is 20：1-35：1.
Relative to prior art, a kind of flame retardant thermoplastic elastomer alloy material of the present invention and preparation method thereof tool
There is following advantage：
(1) flame retardant thermoplastic elastomer alloy material of the present invention is creative utilizes thermoplastic elastomer (TPE) and styrene
Copolymer is directly blended, and obtains low-k, low-dielectric loss, high durable, fire-retardant, good mechanical performance, green ring
The material of guarantor, overcomes current antenna industry common materials dielectric properties, weatherability, mechanical property, environmental requirement etc. cannot be simultaneously
The defect taken into account, and by product of the present invention it is original apply in the industry such as communication antenna industry and building materials, garden equipment.
(2) preparation method of flame retardant thermoplastic elastomer alloy material of the invention by from suitable process equipment and
Technique, overcomes the shortcoming of the processing technology of conventional styrene class elastomer complexity loaded down with trivial details (needing preplasticizing), prepared by the present invention
Method process is simple, it is easy to operation and control, is extremely suitable for industrial production, and product integrated cost is low, and application is extensive.
(3) present invention can flexibly realize material by regulation thermoplastic elastomer (TPE) and the mixed proportion of styrol copolymer
The adjustment of material different performance (mechanical property, hardness), can meet different processing mode and (extrusion molding, injection mo(u)lding, be blow molded into
Type) demand.
Specific embodiment
In addition to being defined, technical term used has universal with those skilled in the art of the invention in following examples
The identical meanings of understanding.Test reagent used in following examples, if no special instructions, is routine biochemistry reagent；It is described
Experimental technique, if no special instructions, is conventional method.
Mention in embodiment and comparative example：
SEBS is hydrogenated styrene-butadiene block copolymer, using the SEBS 6150 of platform rubber；
SEPS is styrene-butadiene block copolymer, from the G1750 that section rises；
GPPS is General Purpose Polystyrenre, selected from the GP 125E of Jin Hu；
HIPS is high impact polystyrene, from the 1300 of Tao Shi；
ASA is acrylate rubber like body and acrylonitrile, cinnamic graft copolymer, from the 778T of benzene neck；
The PP EP548RQ of sandstone in PP selections；
Brominated triazine：Selected from Korea, space enters BTAC-245；
Brominated epoxy：Selected from Korea, space enters CXB-714C；
Stibium trioxide：Selected from Hangzhou Li Co., Ltd of section S-12N；
Phosphate ester flame retardants：Selected from Zhejiang Wan Sheng companies CFP-220.
Primary antioxidant is THANOX 1010；Auxiliary antioxidant is THANOX 168, and described light stabilizer A is hindered amine
Class light stabilizer, light stabilizer B is benzophenone light stabilizer, and what is selected is commercially available general class.
The present invention is described in detail with reference to embodiment.
Embodiment 1
A kind of flame retardant thermoplastic elastomer alloy material, is made up of the following raw material with parts by weight：10 parts of SEBS；
60 parts of GPPS；10 parts of brominated triazine；3 parts of stibium trioxide；2 parts of phosphate ester flame retardants；3 parts of maleic anhydride-g-SBS；Stearic acid
0.3 part of series lubricant agent, 0.2 part of polyethylene kind lubricant, 0.5 part of ester lubricant；0.1 part of primary antioxidant, auxiliary antioxidant 0.1
Part；0.4 part of 0.4 part of light stabilizer A, light stabilizer B；10 parts of calcium carbonate.Weigh after each component by above-mentioned mass fraction proportioning,
High mixer premix 10min is added, the plasticizing of Jing double screw extruders, extrusion pelletizing obtain flame retardant thermoplastic elastomer alloy material.
Embodiment 2
A kind of flame retardant thermoplastic elastomer alloy material, is made up of the following raw material with parts by weight：16 parts of SEPS；
60 parts of GPPS；5 parts of brominated epoxy；2 parts of stibium trioxide；3 parts of maleic anhydride-g-SBS；0.5 part of stearic acid lubricant, polyethylene
0.5 part of series lubricant agent, 0.5 part of ester lubricant, 0.5 part of paraffin series lubricant agent；0.2 part of primary antioxidant, auxiliary antioxidant 0.3
Part；0.5 part of 1 part of light stabilizer A, light stabilizer B；10 parts of barium sulfate.Weigh after each component by above-mentioned mass fraction proportioning, plus
Enter high mixer premix 10min, the plasticizing of Jing double screw extruders, extrusion pelletizing obtain flame retardant thermoplastic elastomer alloy material.
Embodiment 3
A kind of flame retardant thermoplastic elastomer alloy material, is made up of the following raw material with parts by weight：10 parts of SEBS；
72 parts of GPPS；10 parts of brominated epoxy；5 parts of stibium trioxide；2 parts of phosphate ester flame retardants；0.2 part of polyethylene kind lubricant, esters lubrication
0.3 part of agent；0.1 part of primary antioxidant, 0.1 part of auxiliary antioxidant；0.1 part of 0.2 part of light stabilizer A, light stabilizer B.By above-mentioned
Mass fraction proportioning is weighed after each component, adds high mixer premix 10min, and the plasticizing of Jing double screw extruders, extrusion pelletizing are obtained
Flame retardant thermoplastic elastomer alloy material.
Embodiment 4
A kind of flame retardant thermoplastic elastomer alloy material, is made up of the following raw material with parts by weight：30 parts of SEBS；
46 parts of GPPS；10 parts of brominated triazine；3 parts of styrene-maleic anhydride copolymer；2 parts of stearic acid lubricant, polyethylene kind profit
1 part of lubrication prescription, 1 part of ester lubricant；0.2 part of primary antioxidant, 0.3 part of auxiliary antioxidant；0.8 part of light stabilizer A, light stabilizer B
0.7 part.Weigh after each component by above-mentioned mass fraction proportioning, addition high mixer premix 10min, the plasticizing of Jing double screw extruders,
Extrusion pelletizing, obtains flame retardant thermoplastic elastomer alloy material.
Embodiment 5
A kind of flame retardant thermoplastic elastomer alloy material, is made up of the following raw material with parts by weight：25 parts of SEBS；
60 parts of GPPS；2 parts of styrene-maleic anhydride copolymer；1 part of stearic acid lubricant, 0.5 part of polyethylene kind lubricant, esters
0.5 part of lubricant；0.2 part of primary antioxidant, 0.2 part of auxiliary antioxidant；0.2 part of 0.4 part of light stabilizer A, light stabilizer B；It is sliding
5 parts of stone flour.Weigh after each component by above-mentioned mass fraction proportioning, add high mixer premix 10min, the modeling of Jing double screw extruders
Change, extrude pelletizing, obtain flame retardant thermoplastic elastomer alloy material.
Comparative example 1-3
The raw material of comparative example 1-3 is using formula as shown in table 1, and preparation method is consistent with embodiment 1-5.
Implement the Ju Ti Pei Fang (by weight) as shown in table 1 below of 1-5 and comparative example 1-3：
The embodiment of table 1 and comparative example formula
By sample obtained in above-described embodiment 1-5 and comparative example 1-3 in convection oven after 80 DEG C of dryings 4 hours, use
Plastic-injection moulding machine is molded into standard batten, and injection temperature is 200-220 DEG C；By the batten of injection formed 50% it is relatively wet
Degree, 23 DEG C place at least 24 hours after carry out performance test.Tested, wherein Strip Test method is carried out as follows：
Tensile property：By the methods of ISO 527, the mm/min of draw speed 50；
Bending property：By the methods of ISO 178, the mm/min of test speed 2；
Notch impact strength：By the methods of ISO 180, the sample of 4 millimeters thicks, Izod notched impact；
Weatherability is carried out by the standards of ISO 4892.2, after aging 1800 hours, the chromatic aberration value (Δ E) of recording materials and
Performance (notch impact strength) conservation rate；
Dielectric loss angle tangent tan δ and dielectric constant (ε)：According to GB/T 5594.4-1985, test frequency 1GHz (room
Temperature)；
The performance test results data of sample obtained in embodiment 1-5 and comparative example 1-3 are as shown in table 2 below：
The each sample the performance test results of table 2
From table 2：The present invention prepare low-k, high-weatherability flame retardant thermoplastic elastomer alloy material with adopt
Compared with the comparative example of public technology, not only with relatively low dielectric constant and dielectric loss, maintain excellent weather-proof
Performance and mechanical property, can be widely applied to the communications industry, outdoor building materials and garden equipment field.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of flame retardant thermoplastic elastomer alloy material, it is characterised in that：The alloy material is by including following parts by weight
Component composition：
2. flame retardant thermoplastic elastomer alloy material according to claim 1, it is characterised in that：The thermoplastic elastomer (TPE)
For conjugated diene monomeric unit and alkenyl aromatic monomers unit for main body block copolymer；Preferably, the conjugation two
Alkene monomer unit is butadiene or isoprene, the alkenyl aromatic monomers unit be styrene, AMS or
P-methylstyrene；It is highly preferred that the alkenyl aromatic monomers unit is styrene.
3. flame retardant thermoplastic elastomer alloy material according to claim 2, it is characterised in that：The alkenyl aromatic
The content of monomeric unit is the 5wt%-70wt% of block copolymer gross weight；Preferably, the alkenyl aromatic monomers list
The content of unit is the 18wt%-45wt% of block copolymer gross weight.
4. flame retardant thermoplastic elastomer alloy material according to claim 3, it is characterised in that：The thermoplastic elastomer (TPE)
In unsaturated double-bond hydrogenation ratio be more than 85%；Preferably, the hydrogenation of the unsaturated double-bond in the thermoplastic elastomer (TPE)
Rate is more than 93%；It is highly preferred that the hydrogenation ratio of the unsaturated double-bond in the thermoplastic elastomer (TPE) is more than 96%.
5. the flame retardant thermoplastic elastomer alloy material described in claim 1, it is characterised in that：The styrol copolymer is benzene
The General Purpose Polystyrenre that vinyl monomer synthesis is obtained, melting stream of the General Purpose Polystyrenre under the conditions of 200 DEG C/5kg
Dynamic coefficient is 2-20g/10min, it is preferable that under the conditions of 200 DEG C/5kg, melt-flow coefficient is the General Purpose Polystyrenre
2-8g/10min。
6. flame retardant thermoplastic elastomer alloy material according to claim 1, it is characterised in that：The compatilizer is conjugation
Diene monomer unit and alkenyl aromatic monomers unit are the block copolymer of main body, the conjugated diene list of maleic anhydride grafting
Body unit and block copolymer, maleic anhydride units and alkenyl aromatic monomers that alkenyl aromatic monomers unit is main body
Unit is one or more the mixture in the block copolymer of main body.
7. flame retardant thermoplastic elastomer alloy material according to claim 1, it is characterised in that：The fire retardant is environmental protection
One or more mixture in bromide fire retardant, antimony system fire retarding synergist or phosphate ester flame retardants；Preferably, institute
Environmentally friendly bromide fire retardant is stated for one or more the mixture in TDE, brominated triazine or brominated epoxy；
Antimony system fire retarding synergist is stibium trioxide；The phosphate ester flame retardants are triphenyl phosphate or diphenyl phosphoester.
8. flame retardant thermoplastic elastomer alloy material according to claim 1, it is characterised in that：The lubricant is
One kind in stearic acid lubricant, polyethylene kind lubricant, ester lubricant, paraffin series lubricant agent, acid amides series lubricant agent or
Two or more mixtures.
9. the flame retardant thermoplastic elastomer alloy material described in claim 1, it is characterised in that：The antioxidant is Hinered phenols
It is a kind of in the composite antioxidant that primary antioxidant, phosphorous acid lipid auxiliary antioxidant or primary antioxidant and auxiliary antioxidant compounding are obtained
Or two or more mixtures；The light stabilizer is hindered benzoic acids esters light stabilizer, hindered amine light stabilizer, benzo
One or more mixture in triazole type light stabilizer, benzophenone light stabilizer.
10. in claim 1-9 arbitrary described flame retardant thermoplastic elastomer alloy material preparation method, it is characterised in that：
The preparation method comprises the steps：The each component for weighing is added into high mixer premix 5-15min, the modeling of Jing double screw extruders
Change, extrude pelletizing, obtain the alloy material, the screw slenderness ratio of the double screw extruder is 10：1-40：1, described pair of spiral shell
Each section of extruder temperature of bar extruder is 180-220 DEG C, and screw speed is 300-500rpm, and feeding rotating speed is 300-500rpm,
Preferably, the screw slenderness ratio of the double screw extruder is 20：1-35：1.
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| CN109337153A (en) * | 2018-08-09 | 2019-02-15 | 南京聚隆科技股份有限公司 | A kind of automobile batteries shell cover material and preparation method thereof |
| CN109553874A (en) * | 2018-12-26 | 2019-04-02 | 天津金发新材料有限公司 | A kind of low temperature resistant, light aging resisting material flame retardant polystyrene composite, preparation method and applications |
| CN109553873A (en) * | 2018-12-26 | 2019-04-02 | 天津金发新材料有限公司 | A kind of low temperature resistant, the heat-resisting poly styrene composite material of light aging resisting, preparation method and applications |
| CN109627620A (en) * | 2018-12-26 | 2019-04-16 | 天津金发新材料有限公司 | A kind of low temperature resistant, light aging resisting poly styrene composite material, preparation method and applications |
| GB2574730A (en) * | 2018-06-15 | 2019-12-18 | Hexcel Composites Ltd | Epoxy resin formulations |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2574730A (en) * | 2018-06-15 | 2019-12-18 | Hexcel Composites Ltd | Epoxy resin formulations |
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| CN114703558A (en) * | 2022-04-26 | 2022-07-05 | 宁波中聚新材料有限公司 | Impact energy-absorbing fiber and preparation method and application thereof |
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Application publication date: 20170517 |