CN101423660B - Creep resistance and impact resistance polyphenylene oxide composition at high temperature and preparation method thereof - Google Patents
Creep resistance and impact resistance polyphenylene oxide composition at high temperature and preparation method thereof Download PDFInfo
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- CN101423660B CN101423660B CN2008102275018A CN200810227501A CN101423660B CN 101423660 B CN101423660 B CN 101423660B CN 2008102275018 A CN2008102275018 A CN 2008102275018A CN 200810227501 A CN200810227501 A CN 200810227501A CN 101423660 B CN101423660 B CN 101423660B
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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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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- 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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- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92866—Inlet shaft or slot, e.g. passive hopper; Injector, e.g. injector nozzle on barrel
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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Abstract
The invention discloses a high-temperature creep resistant impact resistant polyphenylene oxide composition, which comprises the following components in weight percentage: 50 to 60 percent of polyphenylene oxide resin(PPE), 20 to 30 percent of high impact polystyrene resin(HIPS), 10 to 20 percent of all sulphide butylbenzene powder rubber and 0.2 to 1 percent of antioxidant. The high-temperature creep resistance impact resistance polyphenylene oxide composition has the advantages of weather resistance, good thermal stability, good high-temperature creep resistance, good mechanical property, good fluidity, easy machine shaping and the like, and is applied in the fields of vehicle external decoration such as vehicle front plates, seat bottom plates and bumpers and vehicle internal decoration such as ventilators, seat back rests and supports; moreover, the composition is also widely applied in the household appliance field such as displayers, video tape recorders, copying machines, fax machines, printers, refrigerators, air conditioners and the like. The method for preparing the polyphenylene oxide composition has the advantages of simple and continuous flow, high production efficiency and stable quality of the prepared product.
Description
Technical field
The present invention relates to a kind of polyphenylene ether composition, particularly relate to a kind of creep resistance and impact resistance polyphenylene oxide composition at high temperature, the invention still further relates to the preparation method of this polyphenylene ether composition.
Background technology
The molecular structure of extensive industrialized polyphenylene oxide (PPE) resin in 1964 has determined that this kind engineering plastics have good thermal characteristics and mechanical property, it can non-stop run in-160～190 ℃ of scopes, and thermal creep is the most excellent in all thermoplastic engineering plastics under the high temperature.PPO all can keep good mechanical performance, electrical property, thermotolerance, flame retardant resistance and chemical stability etc. in wide temperature range.It is widely used at electronics, automobile, office automation, medical facilities, textile manufacturing machine, aerospace military aspect.But stress cracking takes place in pure PPE resin poor solvent resistance, goods easily, notched Izod impact strength is low; In addition, pure PPE resin exists melt viscosity height, processing forming poor, is difficult for adopting the shortcoming of injecting method moulding, and this has influenced applying of PPE.Therefore in order to overcome these shortcomings or to give its new performance, often adopt multiple method of modifying, use thereby make it really obtain wide industrial to the PPE modification.
The modification of PPE mainly is divided into physics (blend, fill, increase preceding and little foaming) and chemistry (copolymerization, block, grafting and interpenetratingization etc.) two class methods.Wherein, chemical modification mainly comprises: 1) structure of PPE is carried out modification, as with bromination, Phosphation, sulfonylation, the carboxylated solvability that improves PPE and the ventilation property of waiting to be used for mould material or to give the PPE flame retardant resistance and be used for fire retardant material; 2) small molecules of the main chain of PPE or end group and band functional group reacts, and gives certain polarity of PPE and reactive behavior, is used for the expanding material of PPE alloy; 3) PPE and other polymers or small molecules obtain novel material by block or graft copolymerization or are used in the expanding material of PPE alloy.The most active in the physically modified of PPE is the alloying of PPE, mainly comprises: 1) utilize PPE and polystyrene (PS) in wide compositing range consistency and the polymer blending of various band styrene units prepare PPE/PS type alloy; 2) by with the Other Engineering plastics, prepare high-performance PPE alloy as blend such as polymeric amide, polyethylene terephthalate, polyphenylene sulfides.
In above-mentioned two class alloys, PPE/PS type alloy has critical role owing to have the various excellent properties of PPE and the workability of PS simultaneously in world's general engineering plastic.But pure PPE/PS alloy impelling strength is low, no practical value, usually adding can improve the grafting that contains the vinylbenzene section or the block polymer rubber or the elastomerics of alloy shock strength, as ABS, SBS, SEBS, AN, MAS, MBS, EPDM-g-PS, HIPS, PS-g-MAH etc.Yet, at " engineering plastics application " (Chen Kai etc., 1998,26 (11), p8) middle report, Chen Kai etc. add 5-20% elastomerics SBS in the PPE/HIPS alloy, though make the shock strength that has increased alloy, but the heat-drawn wire of alloy is reduced to 114 ℃ by 135.4 ℃, and the range of decrease is bigger, and tensile strength of material has also reduced about 30% in addition." engineering plastics application " (Qian Dan etc., 2007,35 (9), p21) in the report, Qian Dan etc. add 25 parts of elastomerics SEBS in the PPE/HIPS alloy, strengthened the toughness of alloy material, but tensile strength has reduced about 40%.Patent CN101225214A has improved the shock strength of alloy with SEBS-MA toughening modifying polyphenylene oxide-nylon 6 alloy, but tensile strength decline is more.The adding of this explanation toughner tends to cause rigidity, high-temperature creep resistance and the stable on heating decline of PPE/PS alloy, reduces the use range of material.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of creep resistance and impact resistance polyphenylene oxide composition at high temperature, has good impact resistance, the good heat resistance energy, and still keep rigidity and high-temperature creep resistance under the high temperature, the constant product quality that preparation method's flow process of this polyphenylene ether composition is simple, continuous, production efficiency is high, make.
For solving the problems of the technologies described above, the invention provides a kind of creep resistance and impact resistance polyphenylene oxide composition at high temperature, it comprises following component:
Polyphenylene oxide resin (PPE) 50～60 weight %;
High-impact polystyrene resin (HIPS) 20～30 weight %;
Full sulfuration butylbenzene powdered rubber 10～20 weight %;
Oxidation inhibitor 0.2～1 weight %;
Above composition weight percentage composition sum is 100%.
Above-mentioned polyphenylene ether composition, wherein, the intrinsic viscosity of described polyphenylene oxide resin is 0.2～0.6dL/g, be preferably 0.2～0.45dL/g, can use a kind of polyphenylene oxide resin of independent limiting viscosity, also can select the polyphenyl ether resin composition of the polyphenylene oxide composition of several different qualities viscosity for use, the product that can select for use Ruicheng branch office of Lanxing Chemical New Material Co., Ltd. to produce.
Above-mentioned polyphenylene ether composition, wherein, described polyphenylene oxide resin is poly-(2, the 6-dimethyl benzene) ether, 2,6-xylenol and 2,3, the copolymer resins of 6-pseudocuminol.
Above-mentioned polyphenylene ether composition, wherein, described high-impact polystyrene resin (HIPS) trade mark that can adopt Beijing Yanshan Petrochemical Company to produce is that the trade mark of HIPS632EP, HIPS514P or Shanghai Secco Petrochemical Co., Ltd. is one or more among the HIPS632EP.The adding of HIPS can improve the processing fluidity of polyphenylene ether composition.
Above-mentioned polyphenylene ether composition, wherein, described full sulfuration butylbenzene powdered rubber (can be called ultrafine powder SBS) particle diameter is 50～120 nanometers.The trade mark that can adopt the Beijing Chemical Research Institute to produce is the ultrafine powder SBS of VP101.The adding of ultrafine powder SBS can make material obtain good impact property.
Above-mentioned polyphenylene ether composition, wherein, described oxidation inhibitor is phenolic antioxidant, phosphite ester kind antioxidant, contain in thioesters kind antioxidant or the metal passivator oxidation inhibitor one or more.Used phenolic antioxidant is β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester (antioxidant 1076) or 2,2 methylene-biss (4-methyl-6-tert butyl phenol) (antioxidant 2246); Phosphite ester kind antioxidant is tricresyl phosphite (nonyl phenyl) (oxidation inhibitor TNPP) or tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) esters (oxidation inhibitor 168); Containing the thioesters kind antioxidant is Tyox B (anti-oxidant DLTP); Metal passivator oxidation inhibitor is N, N-diacetyl adipyl two hydrazides (passivator GI-09-367).IRGANOX1076 and IRGAFOS168 that oxidation inhibitor can adopt GIBA company to produce.
The present invention also provides the preparation method of above-mentioned polyphenylene ether composition, and it comprises the steps:
A with polyphenylene oxide, high-impact polystyrene, vulcanize butylbenzene powdered rubber and oxidation inhibitor entirely and in high-speed mixer, stir;
B puts into twin screw extruder with mixed raw material then and melt extrudes.
Above-mentioned preparation method, wherein, churning time is 3～5 minutes among the described step a.
Above-mentioned preparation method, wherein, the length-to-diameter ratio of twin screw extruder is 32～40 among the described step b.
Above-mentioned preparation method, wherein, rate of feeding is 5～10rpm/min among the described step b, and screw speed is 200～400rpm/min, and each subregion temperature of barrel is 200～280 ℃.
Creep resistance and impact resistance polyphenylene oxide composition at high temperature of the present invention owing to added ultrafine powder SBS in composite body system, when obtaining high impact property, has improved the resistance toheat of product again, at high temperature still keeps rigidity and creep resistance.That the gained polyphenylene ether composition has is weather-proof, thermally-stabilised, high-temperature creep resistance, mechanical property are good, good fluidity, be easy to outstanding advantage such as machine-shaping, be very suitable for interior trim fields such as automobile exteriors such as automobile header board, seat bottom plate, collision bumper and ventilator, backrest, carriage, also be widely used in household electric appliances fields such as indicating meter, video recorder, duplicating machine, facsimile recorder, printer, refrigerator, air-conditioning in addition.The constant product quality that preparation method's flow process of this polyphenylene ether composition is simple, continuous, production efficiency is high, make.
Embodiment
Describe the present invention in detail below in conjunction with embodiment.
Comparative Examples
With the polyphenylene oxide resin (intrinsic viscosity is 0.35dL/g) of 60 weight %, the high-impact polystyrene resin (HIPS) of 29 weight %, the elastomerics SBS of 10 weight % and the oxidation inhibitor β-(3 of 1 weight %, the 5-di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester and tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester stirred in high-speed mixer 5 minutes, after mixing, drop into the twin screw extruder extruding pelletization.The length-to-diameter ratio of twin screw extrusion equipment is 35, the control rate of feeding is that 8rpm/min, screw speed are that 200rpm/min, each subregion temperature of barrel are first section 220 ℃, second section 240 ℃, the 3rd section 240 ℃, the 4th section 245 ℃, the 5th section 245 ℃, the 6th section 245 ℃, the 7th section 260 ℃, the 8th section 260 ℃, the 9th section 260 ℃, 250 ℃ of die head temperatures, tie rod is crossed the water pelletizing.
Embodiment 1
With the ultrafine powder SBS of 100 nanometers of the high-impact polystyrene resin of the polyphenylene oxide resin (intrinsic viscosity is 0.35dL/g) of 60 weight %, 29 weight %, 10 weight % and the oxidation inhibitor β-(3 of 1 weight %, the 5-di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester and tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester stirred in high-speed mixer 5 minutes, after mixing, drop into the twin screw extruder extruding pelletization.The length-to-diameter ratio of twin screw extrusion equipment is 35, the control rate of feeding is that 8rpm/min, screw speed are that 200rpm/min, each subregion temperature of barrel are first section 220 ℃, second section 240 ℃, the 3rd section 240 ℃, the 4th section 245 ℃, the 5th section 245 ℃, the 6th section 245 ℃, the 7th section 260 ℃, the 8th section 260 ℃, the 9th section 260 ℃, 250 ℃ of die head temperatures, tie rod is crossed the water pelletizing.
Embodiment 2
With the ultrafine powder SBS of 50 nanometers of the high-impact polystyrene resin of the polyphenylene oxide resin (intrinsic viscosity is 0.6dL/g) of 55 weight %, 24.8 weight %, 20 weight % and the oxidation inhibitor tricresyl phosphite (2 of 0.2 weight %, the 4-di-tert-butyl-phenyl) ester stirred in high-speed mixer 4 minutes, after mixing, drop into the twin screw extruder extruding pelletization.The length-to-diameter ratio of twin screw extrusion equipment is 32, the control rate of feeding is that 5rpm/min, screw speed are that 300rpm/min, each subregion temperature of barrel are first section 220 ℃, second section 240 ℃, the 3rd section 240 ℃, the 4th section 245 ℃, the 5th section 245 ℃, the 6th section 260 ℃, the 7th section 260 ℃, the 8th section 260 ℃, the 9th section 280 ℃, 260 ℃ of die head temperatures, tie rod is crossed the water pelletizing.
Embodiment 3
With the ultrafine powder SBS of 120 nanometers of the high-impact polystyrene resin of the polyphenylene oxide resin (intrinsic viscosity is 0.45dL/g) of 54 weight %, 20 weight %, 15.5 weight % and the oxidation inhibitor β-(3 of 0.5 weight %, the 5-di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester stirred in high-speed mixer 3 minutes, after mixing, drop into the twin screw extruder extruding pelletization.The length-to-diameter ratio of twin screw extrusion equipment is 40, the control rate of feeding is that 10rpm/min, screw speed are that 400rpm/min, each subregion temperature of barrel are first section 220 ℃, second section 240 ℃, the 3rd section 240 ℃, the 4th section 245 ℃, the 5th section 245 ℃, the 6th section 245 ℃, the 7th section 260 ℃, the 8th section 260 ℃, the 9th section 260 ℃, 250 ℃ of die head temperatures, tie rod is crossed the water pelletizing.
Embodiment 4
The ultrafine powder SBS of 100 nanometers of the high-impact polystyrene resin of the polyphenylene oxide resin (intrinsic viscosity is 0.2dL/g) of 50 weight %, 30 weight %, 19 weight % and the oxidation inhibitor Tyox B of 1 weight % were stirred in high-speed mixer 5 minutes, after mixing, drop into the twin screw extruder extruding pelletization.The length-to-diameter ratio of twin screw extrusion equipment is 37, the control rate of feeding is that 8rpm/min, screw speed are that 200rpm/min, each subregion temperature of barrel are first section 200 ℃, second section 240 ℃, the 3rd section 240 ℃, the 4th section 245 ℃, the 5th section 245 ℃, the 6th section 245 ℃, the 7th section 260 ℃, the 8th section 260 ℃, the 9th section 280 ℃, 260 ℃ of die head temperatures, tie rod is crossed the water pelletizing.
The composition of above-mentioned Comparative Examples and each embodiment preparation is injection molded into the standard batten of test usefulness by standard size, physicals sees Table 1, physicals is tested by China's national standard, concrete testing method sees Table 2, creep property and second-order transition temperature when utilizing the Hakke rheometer to adopt the method for rocking to carry out 120 ℃ of test composition, 2min.
Among the embodiment 2～5, second-order transition temperature is respectively 158 ℃, 155 ℃, 158 ℃, 153 ℃ 150 ℃ of all being higher than in the Comparative Examples, creep property is respectively 0.51,0.69,0.49,0.73 data that all are starkly lower than in the Comparative Examples under 120 ℃, 2min, and shock strength all quite or be higher than data in the Comparative Examples in addition; And tensile strength, flexural strength, modulus in flexure all are better than data in the Comparative Examples among the embodiment 2.
Table 1
| Physicals | Comparative Examples | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Tensile strength (MPa) | 51.4 | 55.5 | 45.8 | 49.9 | 45.8 |
| Elongation (%) | 38.6 | 41.4 | 102.5 | 71.6 | 111.2 |
| Flexural strength (MPa) | 85.9 | 87.3 | 79.9 | 80.5 | 74.2 |
| Modulus in flexure (MPa) | 2108 | 2145 | 2013 | 2017 | 1909 |
| Izod unnotched impact strength (KJ.m-2) | 122.4 | 126.2 | 139.9 | 132.7 | 142.9 |
| Creep property (120 ℃, 2min; %) | 1.24 | 0.51 | 0.69 | 0.49 | 0.73 |
| Second-order transition temperature (℃) | 150 | 158 | 155 | 158 | 153 |
Table 2
| Physicals | Unit | Testing method |
| Tensile strength | MPa | GB/T?1040.1 |
| Elongation | ％ | GB/T?1040.1 |
| Flexural strength | MPa | GB/T?9341 |
| Modulus in flexure | MPa | GB/T?9341 |
| The Izod unnotched impact strength | KJ.m-2 | GB?1843 |
Claims (14)
1. creep resistance and impact resistance polyphenylene oxide composition at high temperature, it comprises following component:
Polyphenylene oxide resin 50～60 weight %;
High-impact polystyrene resin 20～30 weight %;
Full sulfuration butylbenzene powdered rubber 10～20 weight %;
Oxidation inhibitor 0.2～1 weight %;
Above composition weight percentage composition sum is 100%.
2. polyphenylene ether composition as claimed in claim 1, wherein, the intrinsic viscosity of described polyphenylene oxide resin is 0.2～0.6dL/g.
3. polyphenylene ether composition as claimed in claim 2, wherein, the intrinsic viscosity of described polyphenylene oxide resin is 0.2～0.45dL/g.
4. polyphenylene ether composition as claimed in claim 1, wherein, described polyphenylene oxide resin is poly-(2, the 6-dimethyl benzene) ether, 2,6-xylenol and 2,3, the copolymer resins of 6-pseudocuminol.
5. polyphenylene ether composition as claimed in claim 1, wherein, described full sulfuration butylbenzene powdered rubber particle diameter is 50～120 nanometers.
6. polyphenylene ether composition as claimed in claim 1, wherein, described oxidation inhibitor is phenolic antioxidant, phosphite ester kind antioxidant, contain in thioesters kind antioxidant or the metal passivator oxidation inhibitor one or more.
7. polyphenylene ether composition as claimed in claim 6, wherein, described phenolic antioxidant is β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester or 2,2 methylene-biss (4-methyl-6-tert butyl phenol).
8. polyphenylene ether composition as claimed in claim 6, wherein, described phosphite ester kind antioxidant is tricresyl phosphite (nonyl phenyl) or tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester.
9. polyphenylene ether composition as claimed in claim 6, wherein, the described thioesters kind antioxidant that contains is a Tyox B.
10. polyphenylene ether composition as claimed in claim 6, wherein, described metal passivator oxidation inhibitor has N, N-diacetyl adipyl two hydrazides.
11. the preparation method of a polyphenylene ether composition as claimed in claim 1, it comprises the steps:
A with polyphenylene oxide, high-impact polystyrene, vulcanize butylbenzene powdered rubber and oxidation inhibitor entirely and in mixing machine, stir;
B puts into twin screw extruder with mixed raw material then and melt extrudes.
12. preparation method as claimed in claim 11, wherein, churning time is 3～5 minutes among the described step a.
13. method as claimed in claim 11, wherein, the length-to-diameter ratio of twin screw extruder is 32～40 among the described step b.
14. method as claimed in claim 11, wherein, rate of feeding is 5～10rpm/min among the described step b, and screw speed is 200～400rpm/min, and each subregion temperature of barrel is 200～280 ℃.
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