CN101870161B - Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products - Google Patents
Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products Download PDFInfo
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- CN101870161B CN101870161B CN2010102131131A CN201010213113A CN101870161B CN 101870161 B CN101870161 B CN 101870161B CN 2010102131131 A CN2010102131131 A CN 2010102131131A CN 201010213113 A CN201010213113 A CN 201010213113A CN 101870161 B CN101870161 B CN 101870161B
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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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
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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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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a double-screw extruder being suitable for extruding modified polyphenylene oxide alloy products. The screw is divided into A, B and C three-section combination form of cutting and kneading blocks in sequence along material transmission direction; the double screw extruder is correspondingly divided into area A, area B and area C, wherein, the area A is the area for initially melting various materials; the area B is the area for melting various materials once again to achieve semi-melting state and for initially kneading area simultaneously; the area C is the area for composition kneading and mixing of fire retardant and various materials, and for evenly distributing various materials simultaneously; and the front part of the area A is a blanking area, the rear part of the area C is a vacuum area, the area between the area A and the area B, and the area between the area B and the area C are a decompressing area, a transmitting area and a boosting area, thus various materials of the invention can be sufficiently melted and mixed.
Description
Technical field:
The present invention relates to a kind of double screw extruder.
Background technology:
Noryl has superior mechanical performance, electric durability ability, heat resistance, good dimensional stability and against weather.The performance that these are excellent makes the product of Noryl can be widely used in many special industries.Use like High-Voltage Electrical Appliances industry, household electrical appliance, office appliance, auto parts machinery, precision instrument textile equipment, military project, civilian or special water supply industry.
There is multiple component in the modified polyphenyl ether product; Like the former powder of polyphenylene oxide, polystyrene and derivative thereof, flexibilizer, antioxidant, fire retardant and other auxiliary agent, the product of the overwhelming majority is that the method that adopts twin-screw to extrude is carried out the production of modified polyphenyl ether product at present.The even mixing of various supplementary materials in product is the stable key of material property.
Noryl is to be stock by former powder of polyphenylene oxide and polystyrene resins; Phosphorus flame retardant, butadiene-styrene rubber class elastomer, antioxidant and other auxiliary agent have been added simultaneously; Wherein the consumption of fire retardant, flexibilizer, antioxidant and other auxiliary agent is all below 10%, and minimum have only 0.2% even still less.The melt temperature of various materials is all different; Like the melt temperature of the former powder of PPO more than 300 ℃; And the fusion temperature of fire retardant has only 40 ℃ even lower; Material melting temperature is too high then should to be taken place to decompose and vaporization for some material, has a strong impact on component and the performance of products of material in product; Melt temperature is low excessively, some not fusions of material, and the dispersion of various materials in product is bad, causes performance of products low excessively, can't reach client's user demand.Therefore the even dispersion of material in twin-screw is vital.
Summary of the invention:
The object of the present invention is to provide and a kind ofly make various materials can obtain the double screw extrusion method that modified polyphenylene oxide alloy products is extruded that is applicable to of sufficient fusion, mixing.
Technical solution of the present invention is:
A kind of double screw extrusion method that is applicable to that modified polyphenylene oxide alloy products is extruded; It is characterized in that: with screw rod is to be divided into A, B, three sections shearings of C successively, to mediate the form that piece makes up along the mass transport direction, inner corresponding A district, B district and the C district of being divided into of double screw extruder; The A district is the zone of various materials being carried out preliminary fusion, and various materials join in the extruder barrel from charge door, is carried to the A district by the delivery element in the machine barrel; The B district carries out fusion once more with various materials, reaches the semi-molten state, the zone of tentatively mediating simultaneously; The material that comes out from the A district is through the emptying pressure release; Combination arrives the B district and shears kneading through delivery element again, realizes the abundant fusion of the former powder of PPE, realizes the preliminary mixing of material simultaneously; The C district carries out composition with fire retardant and various materials to mediate, mix; With the equally distributed zone of various materials, the material after the B district shears adds fire retardant simultaneously again through pressure release simultaneously; Arriving the C district through the delivery element combination shears fully, mediates; Disperseed uniformly between the various materials, the material that thing mixes comes out from the C district through vacuum exhaust, and compression is delivered to head material is extruded; The place ahead in A district is blanking zone, and the rear in C district is a vacuum area, between A district and the B district, be pressure release, conveying, pressurizing area between B district and the C district.
The shearing of screw rod A section, mediate the piece combination and be followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, reverse thread piece; The shearing of screw rod B section, the combination of kneading piece are followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° of kneading pieces, 90 ° of kneading pieces; The shearing of screw rod C section, mediate the piece combination and be followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, reverse thread piece.
The A of screw rod, B, C three segment length have nothing in common with each other.
The present invention is rational in infrastructure; Through modification Noryl material being carried out fusion, kneading with the mode of three sections shearings, kneading; Different fusions according to the various materials of Noryl require to make up; Make modified polyphenyl ether product various materials in carrying out the process that twin-screw extrudes can obtain sufficient fusion, mixing, the performance of various materials can embody, thereby has guaranteed high product performance, stable.Adopted three sections shearings, the kneading of twin-screw, different threaded block combinations has been adopted in every section shearing, and melt state, pressure machine barrel in the variation of material in each section all changes, thereby obtain best modified product.The melt temperature of material is low, even in the production run process, and the mobile performance of product and processing characteristics are consistent.
Description of drawings:
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the partitioned organization diagrammatic sketch of one embodiment of the invention.
Fig. 2 is the configuration diagram of screw rod A section.
Fig. 3 is the configuration diagram of screw rod B.
Fig. 4 is the configuration diagram of screw rod C.
The specific embodiment:
A kind of double screw extrusion method that is applicable to that modified polyphenylene oxide alloy products is extruded is to be divided into A, B, three section 1 of C, 2,3 shearings successively, to mediate the form that piece makes up, inner corresponding A district, B district and the C district of being divided into of double screw extruder along the mass transport direction with screw rod; The A district is the zone of various materials being carried out preliminary fusion; The B district carries out fusion once more with various materials, reaches the semi-molten state, the zone of tentatively mediating simultaneously; The C district carries out composition with fire retardant and various materials to mediate, mix, simultaneously with the equally distributed zone of various materials; The place ahead in A district is blanking zone, and the rear in C district is a vacuum area, between A district and the B district, be pressure release, conveying, pressurizing area between B district and the C district.
The shearing of screw rod A section, mediate the piece combination and be followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, reverse thread piece; The shearing of screw rod B section, the combination of kneading piece are followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° of kneading pieces, 90 ° of kneading pieces; The shearing of screw rod C section, mediate the piece combination and be followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, reverse thread piece.The A of screw rod, B, C three segment length have nothing in common with each other.
Claims (2)
1. double screw extrusion method that is applicable to that modified polyphenylene oxide alloy products is extruded; It is characterized in that: with screw rod is to be divided into A, B, three sections shearings of C successively, to mediate the form that piece makes up along the mass transport direction, inner corresponding A district, B district and the C district of being divided into of double screw extruder; The A district is the zone of various materials being carried out preliminary fusion, and various materials join in the extruder barrel from charge door, is carried to the A district by the delivery element in the machine barrel; The B district carries out fusion once more with various materials, reaches the semi-molten state, the zone of tentatively mediating simultaneously; The material that comes out from the A district is through the emptying pressure release; Combination arrives the B district and shears kneading through delivery element again, realizes the abundant fusion of the former powder of PPE, realizes the preliminary mixing of material simultaneously; The C district carries out composition with fire retardant and various materials to mediate, mix; With the equally distributed zone of various materials, the material after the B district shears adds fire retardant simultaneously again through pressure release simultaneously; Arriving the C district through the delivery element combination shears fully, mediates; Disperseed uniformly between the various materials, the material that mixes comes out from the C district through vacuum exhaust, and compression is delivered to head material is extruded; The place ahead in A district is blanking zone, and the rear in C district is a vacuum area, between A district and the B district, be pressure release, conveying, pressurizing area between B district and the C district; The shearing of screw rod A section, mediate the piece combination and be followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, reverse thread piece; The shearing of screw rod B section, the combination of kneading piece are followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° of kneading pieces, 90 ° of kneading pieces; The shearing of screw rod C section, mediate the piece combination and be followed successively by 45 ° along the mass transport direction and mediate pieces, 45 ° and mediate piece, 45 ° and mediate piece, 90 ° and mediate piece, reverse thread piece.
2. the double screw extrusion method that is applicable to that modified polyphenylene oxide alloy products is extruded according to claim 1 is characterized in that: the A of screw rod, B, C three segment length have nothing in common with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102131131A CN101870161B (en) | 2010-06-24 | 2010-06-24 | Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102131131A CN101870161B (en) | 2010-06-24 | 2010-06-24 | Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products |
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| Publication Number | Publication Date |
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| CN101870161A CN101870161A (en) | 2010-10-27 |
| CN101870161B true CN101870161B (en) | 2012-06-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102058011B (en) * | 2010-12-03 | 2013-11-13 | 兰州理工大学 | Screw structure of double-screw extruder |
| CN102700109A (en) * | 2012-06-19 | 2012-10-03 | 苏州博云塑业有限公司 | Screw for engaging double-screw extruder in same direction |
| CN102773990B (en) * | 2012-06-19 | 2015-08-12 | 苏州博云塑业有限公司 | Double-screw extruder screw |
| CN105538655B (en) * | 2016-03-01 | 2018-11-13 | 南通星辰合成材料有限公司 | The double screw extrusion method squeezed out suitable for 6 product of modified Pa 6 |
| CN105922473A (en) * | 2016-04-28 | 2016-09-07 | 安徽省华晨塑业科技有限公司 | Special high-performance heat conducting insulation alloy screw rod for reworked plastic modification |
| CN116575133B (en) * | 2023-07-14 | 2023-09-22 | 江苏恒力化纤股份有限公司 | Preparation method of flame-retardant polyester fiber based on melt reaction extrusion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496810A (en) * | 2002-10-03 | 2004-05-19 | ������ѧ��ʽ���� | Producing method of polymide composite |
| CN101225214A (en) * | 2007-11-08 | 2008-07-23 | 上海交通大学 | Toughening modifying method for polyphenyl ether/nylon 6 alloy |
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- 2010-06-24 CN CN2010102131131A patent/CN101870161B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496810A (en) * | 2002-10-03 | 2004-05-19 | ������ѧ��ʽ���� | Producing method of polymide composite |
| CN101225214A (en) * | 2007-11-08 | 2008-07-23 | 上海交通大学 | Toughening modifying method for polyphenyl ether/nylon 6 alloy |
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| CN101870161A (en) | 2010-10-27 |
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