CN110229287A - A kind of high-performance refractory SEBS graft polymers and preparation method thereof - Google Patents
A kind of high-performance refractory SEBS graft polymers and preparation method thereof Download PDFInfo
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- CN110229287A CN110229287A CN201910626955.0A CN201910626955A CN110229287A CN 110229287 A CN110229287 A CN 110229287A CN 201910626955 A CN201910626955 A CN 201910626955A CN 110229287 A CN110229287 A CN 110229287A
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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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F287/00—Macromolecular compounds obtained by polymerising monomers on to block polymers
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/006—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to block copolymers containing at least one sequence of polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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Abstract
The invention discloses a kind of high-performance refractory SEBS graft polymers and preparation method thereof, belong to graft polymers preparation technical field, the method that melting graft reaction is carried out using double screw extruder, graft reaction SEBS polymer obtained after squeezing out is because of silicon in SEBS molecule, the presence of phosphorus, and silicon, phosphorus has excellent cooperative flame retardant effect again, substantially increase SEBS flame-retardant system at carbon and carbon-coating compact structure and flame retardant property, therefore obtained SEBS polymer not only flame retardant property with higher, SEBS can also be made to keep higher mechanical property, the screw rod of double screw extruder is equipped with mutation section, and it is mutated the structure that section uses variable diameter Changeable Lead, mutation section makes material during being heated to maximum temperature, material is compressed, reduce the throughput of material, it realizes a small amount of Heating, promotes material sufficiently to heat, enhances the heating effect of material, to promote the quality of extruded product, realizes that material performance optimizes.
Description
Technical field
The present invention relates to graft polymers preparation technical fields, connect more specifically to a kind of high-performance refractory SEBS
Branch polymer and preparation method thereof.
Background technique
Graft copolymer (Graft copolymer): it is connected on certain atoms of main polymer chain and backbone chemistry structure
A kind of copolymer of the side chain of different polymer segments.There are mainly two types of graft polymers synthesis:
Method one activates a certain macromolecule polymerizeing in advance through chemically or physically chemical method, makes to generate in activity on main chain
The heart (indicates) that it can be free radical with *, is also possible to positive and negative ion, then causes monomer M polymerization by it and generates grafting altogether
Polymers, this method are known as the method that branch is picked out on macromolecule；
Method two, by the polymerization of monomer M, when it also has reactivity (such as anionic polymerization living macromolecule) in advance
A certain high molecular functional group's (being indicated with jia lun) of polymerization, which reacts, generates graft copolymer, this method is known as branch and is connected to high score
Method on sub- trunk.
The above both methods all inevitably has a degree of monomer autohemagglutination to be formed by homopolymer, therefore often
Homopolymer is removed by solvent extraction or the precipitation method, then identify the structure of graft copolymer.
Graft copolymerization first has to form active grafting site, and the initiator or catalyst of various polymerizations can be for grafting altogether
It is poly- that reactive species are provided, then generate grafting site.Active site is in the end of chain, and block copolymer will be formed after polymerization；Active site
Among segment, graft copolymer is just formed after polymerization.
SEBS is using polystyrene as end segment, and the ethylene-butene copolymer obtained with polybutadiene plus hydrogen is intermediate bullet
The linear tri-block copolymer of property block.A kind of thermoplastic elastomer (TPE) haveing excellent performance, have preferable weatherability, heat resistance and
Preferable physical mechanical property is widely used in everyday articles, wire and cable etc..SEBS blend can be using injection, extrusion
And the hot plastic processing methods such as blow molding manufacture various objects.SEBS and SBS are different in terms of product structure, in processing temperature
Also it is slightly different.In terms of processing temperature, SBS processing temperature is generally between 150-200 DEG C, and SEBS is generally in 190-260
Between DEG C；When SBS is processed, it is desirable that shear rate is lower, and requires shear rate higher when SEBS processing；When injection molding, SBS
Moderate shear rate is generally used, extrusion molding generally uses the screw rod of low compression ratio, and when SEBS processing, preferably use high infuse
The screw rod of modeling rate and high compression ratio.
But SEBS haves the defects that inflammable, limits its application field.Improve SEBS's with the method for addition fire retardant
Flame retardant property existing defects, because only that the fire retardant (need to be added to total system quality 75%) of addition high quality score is
SEBS compound system can be made to reach flame retardant effect.A large amount of additions of fire retardant lead to the tensile strength of SEBS compound system, break
The performances such as elongation ratio is not added with fire retardant and compares, and performance declines to a great extent.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of high-performance refractory SEBS graft polymers
And preparation method thereof, the method that it carries out melting graft reaction using double screw extruder, graft reaction is obtained after squeezing out
SEBS polymer is because of the presence of silicon, phosphorus in SEBS molecule, and silicon, phosphorus have excellent cooperative flame retardant effect again, substantially increase
SEBS flame-retardant system at carbon and carbon-coating compact structure and flame retardant property, therefore obtained SEBS polymer not only have compared with
High flame retardant property, moreover it is possible to SEBS be made to keep higher mechanical property.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of high-performance refractory SEBS graft polymers, including SEBS(YH-503, styrene-content 33%), 32# white oil,
Grafted monomers and initiator, the grafted monomers include double trimethylsilyl vinyl phosphates and Z- hydroxy ethyl methyl third
Olefin(e) acid phosphate, the initiator include benzoyl peroxide (BPO), include: SEBS(YH-503, benzene second by mass fraction
Alkene content 33%) 100 parts, 50 parts of 32# white oil, 8-10 parts of double trimethylsilyl vinyl phosphates, Z- hydroxy ethyl methyl third
3-5 parts of olefin(e) acid phosphate, 0.5-0.7 parts of benzoyl peroxide (BPO).
A kind of high-performance refractory SEBS graft polymers, preparation method are as follows:
S1, it has been weighed by formula SEBS and 32# white oil, then load weighted SEBS and 32# white oil has been added with 60r/min speed
It is oil-filled uniform anti-in order to make in the high-speed mixer of operation (high-speed mixer has two kinds of revolving speeds of 60r/min and 120r/min)
Only oil-filled exudation, therefore select the speed of slow-speed of revolution 60r/min；
S2, by double trimethylsilyl vinyl phosphates, z- hydroxy ethyl methyl acrylated phosphate and the stupid first of peroxidating two
Acyl (BPO) is added in the high-speed mixer run with the speed of 60r/min, and mixing discharges spare after 12 minutes；
S3, SEBS mixture is added to the feed opening on double screw extruder, and by SEBS mixture with the charging speed of 65KG/H
Rate is added in a high speed mixer after mixing evenly, twin-screw is added and squeezes in the double screw extruder of 75r/min rate operation
Machine squeezes out out, and under the action of benzoyl peroxide initiator, graft reaction occurs on SEBS strand；
S4, mixed material squeeze out after stopping 5-7min in double screw extruder.
The method that it carries out melting graft reaction using double screw extruder, graft reaction SEBS obtained after squeezing out are poly-
Object is closed because of the presence of silicon, phosphorus in SEBS molecule, and silicon, phosphorus have excellent cooperative flame retardant effect again, substantially increases SEBS resistance
Combustion system at carbon and carbon-coating compact structure and flame retardant property, therefore obtained SEBS polymer not only resistance with higher
Fire performance, moreover it is possible to SEBS be made to keep higher mechanical property.
Further, in S1, SEBS is first added and slowly penetrates into 32# white oil in stirring after the SEBS is added
In SEBS, after the 32# white oil is all added, remix 30 seconds.
Further, in S3, the draw ratio of the double screw extruder is L/D=48, is L/D=32 compared to draw ratio
Double screw extruder, draw ratio is that the double screw extruder of L/D=48 can guarantee that material obtains better heating effect, so that squeezing
Product quality is further promoted out.
Further, the double screw extruder has 12 sections, and the feed opening is located at first section.
Further, 12 sections of the double screw extruder from front to back be respectively as follows: 70 DEG C -80 DEG C, 140 DEG C -
150℃、160℃-170℃、180℃-190℃、190℃-200℃、200℃-210℃、210℃-220℃、220℃-230
DEG C, 200 DEG C -210 DEG C, 190 DEG C -200 DEG C, 180 DEG C -190 DEG C and 170 DEG C -180 DEG C, Multi sectional heat can guarantee material heating
The uniformity, optimize heating effect.
Further, the extruder temperature of the double screw extruder gradually rises from 70 DEG C -80 DEG C of first section
To 230 DEG C of Section Eight section, and double screw extruder latter end temperature is gradually decreased to 170 DEG C -180 DEG C.
Further, the screw rod of the double screw extruder is equipped with mutation section, and is mutated the knot that section uses variable diameter Changeable Lead
Structure, the setting for being mutated section allow the material of feeding section compressed quickly into deferent segment, the screw channel of entire deferent segment are completely filled with, from
And its extrusion output is greatly increased, realize that material performance optimizes.
Further, the mutation section is located at 210 DEG C -220 DEG C and 220 DEG C -230 DEG C of Section Eight section of District 7 section, mutation
Section makes material during being heated to maximum temperature, compresses to material, reduces the throughput of material, realizes a small amount of add
Heat promotes material sufficiently to heat, and enhances the heating effect of material, to promote the quality of extruded product.
Further, it is described mutation section it is small-bore for its bigbore 5/6ths, the size bore ratio can guarantee
The material of feeding section compresses quickly enters deferent segment, and compression effectiveness is best；When ratio is too small, the material of feeding section is difficult to quickly
Compression enters deferent segment, drags slow extrusion process, and blocking can be even be easy to cause when serious；When ratio is excessive, the material of feeding section
Compression effectiveness it is poor, material heating it is insufficient, reduce extruded product quality.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) method that this programme carries out melting graft reaction using double screw extruder, graft reaction are obtained after squeezing out
SEBS polymer is because of the presence of silicon, phosphorus in SEBS molecule, and silicon, phosphorus have excellent cooperative flame retardant effect again, substantially increase
SEBS flame-retardant system at carbon and carbon-coating compact structure and flame retardant property, therefore obtained SEBS polymer not only have compared with
High flame retardant property, moreover it is possible to SEBS be made to keep higher mechanical property.
(2) draw ratio of double screw extruder is L/D=48, long compared to the double screw extruder that draw ratio is L/D=32
Diameter than for L/D=48 double screw extruder can guarantee material obtain better heating effect so that extruded product quality obtain into
One step is promoted.
(3) double screw extruder has 12 sections, and 12 sections of double screw extruder from front to back are respectively as follows: 70
℃-80℃、140℃-150℃、160℃-170℃、180℃-190℃、190℃-200℃、200℃-210℃、210℃-220
DEG C, 220 DEG C -230 DEG C, 200 DEG C -210 DEG C, 190 DEG C -200 DEG C, 180 DEG C -190 DEG C and 170 DEG C -180 DEG C, Multi sectional heating can
Guarantee the uniformity of material heating, optimizes heating effect.
(4) screw rod of double screw extruder is equipped with mutation section, and is mutated the structure that section uses variable diameter Changeable Lead, is mutated section
It is arranged and the material of feeding section is allowed to be compressed quickly into deferent segment, the screw channel of entire deferent segment is completely filled with, to greatly increase
Add its extrusion output, realizes that material performance optimizes.
(5) mutation section is located at 210 DEG C -220 DEG C and 220 DEG C -230 DEG C of Section Eight section of District 7 section, and mutation section makes material
During being heated to maximum temperature, material is compressed, reduces the throughput of material, a small amount of heating is realized, promotes object
Material sufficiently heating, enhances the heating effect of material, to promote the quality of extruded product.
(6) be mutated section it is small-bore for its bigbore 5/6ths, the size bore ratio can guarantee feeding section object
Compression enters deferent segment to material quickly, and compression effectiveness is best；When ratio is too small, the material of feeding section is difficult to be compressed quickly into defeated
Section out drags slow extrusion process, and blocking can be even be easy to cause when serious；When ratio is excessive, the compression effectiveness of the material of feeding section
Difference, material heating is insufficient, reduces extruded product quality.
Detailed description of the invention
Fig. 1 is formula comparison diagram of the invention.
Fig. 2 is that typical performance of the invention detects record sheet.
Fig. 3 is heat aging performance test recording table of the invention.
Fig. 4 is screw-rod structure schematic diagram of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside", " top/bottom end "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
A kind of referring to Fig. 1, high-performance refractory SEBS graft polymers, including SEBS(YH-503, styrene-content 33%), 32#
White oil, grafted monomers and initiator, grafted monomers include double trimethylsilyl vinyl phosphates and Z- hydroxy ethyl methyl
Acrylated phosphate, initiator include benzoyl peroxide (BPO), include: SEBS(YH-503, styrene by mass fraction
Content 33%) 100 parts, 50 parts of 32# white oil, 8-10 parts of double trimethylsilyl vinyl phosphates, Z- hydroxy ethyl methyl propylene
3-5 parts of acid phosphoric acid ester, 0.5-0.7 parts of benzoyl peroxide (BPO).
A kind of high-performance refractory SEBS graft polymers, preparation method are as follows:
S1, it has been weighed by formula SEBS and 32# white oil, then load weighted SEBS and 32# white oil has been added with 60r/min speed
It is oil-filled uniform anti-in order to make in the high-speed mixer of operation (high-speed mixer has two kinds of revolving speeds of 60r/min and 120r/min)
Only oil-filled exudation, therefore select the speed of slow-speed of revolution 60r/min；
S2, by double trimethylsilyl vinyl phosphates, z- hydroxy ethyl methyl acrylated phosphate and the stupid first of peroxidating two
Acyl (BPO) is added in the high-speed mixer run with the speed of 60r/min, and mixing discharges spare after 12 minutes；
S3, SEBS mixture is added to the feed opening on double screw extruder, and by SEBS mixture with the charging speed of 65KG/H
Rate is added in a high speed mixer after mixing evenly, twin-screw is added and squeezes in the double screw extruder of 75r/min rate operation
Machine squeezes out out, and under the action of benzoyl peroxide initiator, graft reaction occurs on SEBS strand；
S4, mixed material squeeze out after stopping 5-7min in double screw extruder.
Matching for the material can carry out optimization selection according to actual needs, as SEBS can select Hunan Sheng Li as needed
The YH-503 of Chemical Industry Science Co., Ltd's production, double trimethylsilyl vinyl phosphates can be purchased as needed in Hubei moral
Super Chemical Co., Ltd., likewise, Z- hydroxy ethyl methyl acrylated phosphate can be purchased as needed in Guangzhou San Wang chemical industry
Materials Co., Ltd, the method that this programme carries out melting graft reaction using double screw extruder, graft reaction are made after squeezing out
SEBS polymer because of the presence of silicon, phosphorus in SEBS molecule, and silicon, phosphorus have excellent cooperative flame retardant effect again, mention significantly
High SEBS flame-retardant system at carbon and carbon-coating compact structure and flame retardant property, therefore obtained SEBS polymer not only has
There is higher flame retardant property, moreover it is possible to SEBS be made to keep higher mechanical property.
In S1, SEBS is first added and is slowly penetrated into 32# white oil in SEBS in stirring, 32# is white after SEBS is added
After oily all additions, remix 30 seconds.
In S3, the draw ratio of double screw extruder is L/D=48, is the double screw extruder of L/D=32 compared to draw ratio,
Draw ratio is that the double screw extruder of L/D=48 can guarantee that material obtains better heating effect, so that extruded product quality obtains
Further promoted.
Double screw extruder has 12 sections, and feed opening is located at first section.
12 sections of double screw extruder from front to back be respectively as follows: 70 DEG C -80 DEG C, 140 DEG C -150 DEG C, 160 DEG C -
170℃、180℃-190℃、190℃-200℃、200℃-210℃、210℃-220℃、220℃-230℃、200℃-210
DEG C, 190 DEG C -200 DEG C, 180 DEG C -190 DEG C and 170 DEG C -180 DEG C, Multi sectional heat can guarantee material heating the uniformity, optimization
Heating effect.
The extruder temperature of double screw extruder is gradually increased to Section Eight section from 70 DEG C -80 DEG C of first section
230 DEG C, and double screw extruder latter end temperature is gradually decreased to 170 DEG C -180 DEG C.
Referring to Fig. 4, the screw rod of double screw extruder is equipped with mutation section, and is mutated the structure that section uses variable diameter Changeable Lead,
The setting of mutation section allows the material of feeding section compressed quickly into deferent segment, and the screw channel of entire deferent segment is completely filled with, thus
Its extrusion output is greatly increased, realizes that material performance optimizes.
Mutation section is located at 210 DEG C -220 DEG C and 220 DEG C -230 DEG C of Section Eight section of District 7 section, and mutation section is adding material
During heat to maximum temperature, material is compressed, reduces the throughput of material, a small amount of heating is realized, material is promoted to fill
Divide heating, enhances the heating effect of material, to promote the quality of extruded product.
Be mutated section it is small-bore for its bigbore 5/6ths, the size bore ratio can guarantee feeding section material very
Fast compression enters deferent segment, and compression effectiveness is best；When ratio is too small, the material of feeding section is difficult to be compressed quickly into output
Section, drags slow extrusion process, and blocking can be even be easy to cause when serious；When ratio is excessive, the compression effectiveness of the material of feeding section is poor,
Material heating is insufficient, reduces extruded product quality.
Comparative test (with the method for addition fire retardant):
Referring to Fig. 1, comparative test formula by mass fraction include: 100 parts of SEBS trade mark YH-53 (styrene-content 33%),
15 parts of 50 parts of 32# white oil, 60 parts of decabromodiphenyl oxide and SB2O3 (antimony oxide)；
Comparative test the preparation method comprises the following steps:
S1, it has been weighed by formula SEBS and 32# white oil, load weighted SEBS is added and is mixed with the high speed that 60r/min rate is run
In conjunction machine, then 32# white oil is slowly penetrated into running high-speed mixer, after 32# white oil is added, after remixing 30 seconds,
Load weighted decabromodiphenyl oxide and SB2O3 antimony oxide are added in running high-speed mixer, gone out after stirring 12 minutes
Expect spare；
S2, extruding pelletization on the double screw extruder that draw ratio is L/D=32 is added in SEBS mixture, double screw extruder has 8
A section, feed opening are located at the first section of extruder, and extruder operating rate is 90r/min, charging rate 45kg/h, squeeze
Out-of-machine temperature is gradually increased to 230 DEG C of the 5th section from 110 DEG C -120 DEG C of the first section.Extruder terminal temperature is gradually
180 DEG C are down to, head temperature is 190 DEG C -200 DEG C.
The temperature of its eight sections is respectively as follows: 110 DEG C -120 DEG C, 150 DEG C -160 DEG C, 180 DEG C -190 DEG C, 200 DEG C -210
DEG C, 220 DEG C -230 DEG C, 200 DEG C -210 DEG C, 190 DEG C -200 DEG C, 180 DEG C -190 DEG C and 190 DEG C -200 DEG C.
The SEBS material of Maleated SEBS in pure SEBS, the program and comparative test is detected respectively, including typicalness
It can detect and heat aging performance is tested:
Referring to Fig. 2, typical performance detection project include: 300% stress at definite elongation MPa, tensile strength MPa, elongation rate of tensile failure %,
Hardness (shore A), oxygen index (OI) (A method) and combustibility test (normal beam technique), 300% stress at definite elongation MPa, tensile strength MPa and drawing
The detection method of disconnected elongation % is all made of GB/T528-2009；
Referring to Fig. 3, the project of heat aging performance test include: elongation rate of tensile failure % before tensile strength MPa, aging before aging, it is old
Elongation rate of tensile failure %, aging front and back tensile strength performance change rate % and aging front and back are broken and are stretched after changing post-tensioning intensity MPa, aging
Long rate performance change rate %, before aging before tensile strength MPa, aging after elongation rate of tensile failure %, aging post-tensioning intensity MPa and aging
The detection method of elongation rate of tensile failure % is all made of GB/T528-2009, tensile strength performance change rate % and aging front and back before and after aging
The detection method of elongation rate of tensile failure performance change rate % is all made of GB/T3512-2001；It is tested and is marked according to GB/T 3512-2001
It is quasi-；Test condition: 100 DEG C ± 2 DEG C of temperature 168 hours.
Pass through the charting of above-mentioned test, it is seen that the SEBS polymer obtained by after graft reaction squeezes out in this programme is not
Only flame retardant property with higher, moreover it is possible to SEBS be made to keep higher mechanical property.
The foregoing is intended to be a preferred embodiment of the present invention；But scope of protection of the present invention is not limited thereto.
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of high-performance refractory SEBS graft polymers, it is characterised in that: including SEBS(YH-503, styrene-content 33%),
32# white oil, grafted monomers and initiator, the grafted monomers include double trimethylsilyl vinyl phosphates and Z- hydroxyl second
Methacrylic acid phosphate, the initiator include benzoyl peroxide (BPO), include: SEBS(YH- by mass fraction
503, styrene-content 33%) 100 parts, 50 parts of 32# white oil, 8-10 parts of double trimethylsilyl vinyl phosphates, Z- hydroxyl second
3-5 parts of methacrylic acid phosphate, 0.5-0.7 parts of benzoyl peroxide (BPO).
2. a kind of high-performance refractory SEBS graft polymers according to claim 1, it is characterised in that: preparation method
Are as follows:
S1, it has been weighed by formula SEBS and 32# white oil, then load weighted SEBS and 32# white oil has been added with 60r/min speed
In the high-speed mixer of operation；
S2, by double trimethylsilyl vinyl phosphates, z- hydroxy ethyl methyl acrylated phosphate and the stupid first of peroxidating two
Acyl (BPO) is added in the high-speed mixer run with the speed of 60r/min, and mixing discharges spare after 12 minutes；
S3, SEBS mixture is added to the feed opening on double screw extruder, and by SEBS mixture with the charging speed of 65KG/H
Rate is added in the double screw extruder of 75r/min rate operation；
S4, mixed material squeeze out after stopping 5-7min in double screw extruder.
3. a kind of high-performance refractory SEBS graft polymers according to claim 2 and preparation method thereof, it is characterised in that:
In S1, SEBS is first added and is slowly penetrated into 32# white oil in SEBS in stirring, the 32# is white after the SEBS is added
After oily all additions, remix 30 seconds.
4. a kind of high-performance refractory SEBS graft polymers according to claim 2 and preparation method thereof, it is characterised in that:
In S3, the draw ratio of the double screw extruder is L/D=48.
5. a kind of high-performance refractory SEBS graft polymers according to claim 2 or 4 and preparation method thereof, feature exists
In: the double screw extruder has 12 sections, and the feed opening is located at first section.
6. a kind of high-performance refractory SEBS graft polymers according to claim 5 and preparation method thereof, it is characterised in that:
12 sections of the double screw extruder from front to back be respectively as follows: 70 DEG C -80 DEG C, 140 DEG C -150 DEG C, 160 DEG C -170 DEG C,
180℃-190℃、190℃-200℃、200℃-210℃、210℃-220℃、220℃-230℃、200℃-210℃、190
DEG C -200 DEG C, 180 DEG C -190 DEG C and 170 DEG C -180 DEG C.
7. a kind of high-performance refractory SEBS graft polymers according to claim 6 and preparation method thereof, it is characterised in that:
The extruder temperature of the double screw extruder is gradually increased to 230 DEG C of Section Eight section from 70 DEG C -80 DEG C of first section,
And double screw extruder latter end temperature is gradually decreased to 170 DEG C -180 DEG C.
8. a kind of high-performance refractory SEBS graft polymers according to claim 4 and preparation method thereof, it is characterised in that:
The screw rod of the double screw extruder is equipped with mutation section, and is mutated the structure that section uses variable diameter Changeable Lead.
9. a kind of high-performance refractory SEBS graft polymers according to claim 5 or 8 and preparation method thereof, feature exists
In: the mutation section is located at 210 DEG C -220 DEG C and 220 DEG C -230 DEG C of Section Eight section of District 7 section.
10. a kind of high-performance refractory SEBS graft polymers according to claim 9 and preparation method thereof, feature exists
In: it is described mutation section it is small-bore for its bigbore 5/6ths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910626955.0A CN110229287A (en) | 2019-07-12 | 2019-07-12 | A kind of high-performance refractory SEBS graft polymers and preparation method thereof |
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| CN112048031A (en) * | 2020-08-31 | 2020-12-08 | 江苏东材新材料有限责任公司 | Halogen-free flame-retardant modified hydrocarbon resin and preparation method thereof |
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