CN106273303A - The preparation method of a kind of inbred group breeding (PPESK) tubing and device - Google Patents

The preparation method of a kind of inbred group breeding (PPESK) tubing and device Download PDF

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Publication number
CN106273303A
CN106273303A CN201610746192.XA CN201610746192A CN106273303A CN 106273303 A CN106273303 A CN 106273303A CN 201610746192 A CN201610746192 A CN 201610746192A CN 106273303 A CN106273303 A CN 106273303A
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China
Prior art keywords
temperature
die head
tubing
machine
district
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CN201610746192.XA
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Chinese (zh)
Inventor
陈厚忠
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Wuhan Kingbull Economic Development Co Ltd
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Wuhan Kingbull Economic Development Co Ltd
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Priority to CN201610746192.XA priority Critical patent/CN106273303A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2481/00—Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as filler
    • B29K2481/06—PSU, i.e. polysulfones; PES, i.e. polyethersulfones or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The invention discloses preparation method and the device of a kind of inbred group breeding (PPESK) tubing, including main and auxiliaries, described main frame includes a single screw extrusion machine；Described screw rod is sudden change three-stage screw；Described subsidiary engine includes die head, traction machine, cutting machine, baking oven；Described die head is stent-type die head；Described traction machine includes actuating device, hold down gag and brake unit, and it is arranged on after die head exit；Described cutting machine is arranged on after traction machine；Described baking oven be airtight can in circulation casing, be arranged on last；Technique include drying, feeding, extrusion plasticizing, homogenizing shunting, molding/shape, draw, cut, heat treatment.During pipe outlet mould, structure is closely knit, and outward appearance smooths.

Description

The preparation method of a kind of inbred group breeding (PPESK) tubing and device
Technical field
The present invention relates to the processing preparing technical field of tubing, be specifically related to a kind of inbred group breeding (PPESK) The preparation method of tubing and device.
Background technology
Inbred group breeding (PPESK) is the high-performance special engineering plastic in a kind of molecular structure containing a large amount of phenyl ring Material, its physical property is superior, has high temperature resistant, corrosion-resistant, hydrolysis, self-lubricating, wear-resistant, intensity is high, dimensionally stable etc. is excellent Point.But its processing temperature narrow range, degradable carbonization, its goods are more with the molding mode of cast, sintering in the market, Easily decompose in machine barrel when bar, the tubing of extrusion preparation circle, have micropore inside structure leakiness during pipe outlet mould, outward See the situations such as unsmooth.
Summary of the invention
The main object of the present invention is to provide preparation method and the dress of a kind of inbred group breeding (PPESK) tubing Put, it is intended to reduce PPESK carbonization in extrusion and decompose, i.e. form consistent internal structure after making PPESK outlet mold fine and close, The tubing of smooth in appearance.The method that the preparation method of the present invention is more conventional, simple to operate, continuous prodution can be realized.
For achieving the above object, the present invention solves the technical scheme of this technical problem and is: the Phthalazinone polyethers of the present invention The flow process of the preparation method of sulfone ketone (PPESK) tubing is: drying, feeding, extrusion plasticizing, homogenizing shunting, molding/shape, draw, Cutting and heat treatment.
The preparation method of a kind of inbred group breeding tubing, comprises the steps:
1) dry: using 160-200 DEG C of circulating air to be dried PPESK, drying time is 3-8h, makes the moisture content of raw material Less than 0.2%；
2) feeding: the material after drying is put in extruder feed zone by feeding machine with uniform speed；
3) extrusion plasticizing: divide three sections to heat the machine barrel of extruder, according to property of raw material design temperature, temperature controls such as Under: district's feeding section temperature is 310-340 DEG C, and 2nd district melt compression section temperature and are 320-350 DEG C, and three district's homogenizing zone temperature are 330-360 DEG C, connector temperature is 330-360 DEG C；By rubbing between extruder barrel temperature and material and machine barrel, screw rod Wiping effect, making mass transfer is the uniformly continuous melt with certain fluidity, and the screw speed of extruder is 5-15 r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by from the revolving flowing of screw rod, through the cone of stent-type die head Body is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, and described die head design temperature is 3rd district: previous district temperature is 330-360 DEG C, the first two district's temperature is 320-350 DEG C, and 3rd district are the flat segments thermal treatment zone；Described is flat The straight section thermal treatment zone uses syllogic step temperature, and flat segments syllogic step temperature is to be set as along the temperature in pipe outlet direction 330-350 DEG C, 290-310 DEG C and 230-250 DEG C；
5) molding/sizing: be circular pipe through staged cooling outlet mold aftershaping, the internal temperature control of tubing die head core rod, core Rod temperature is 200 ~ 280 DEG C；
6) traction: tubing is at the uniform velocity drawn to cutting machine via compressing belt；
7) cutting: tubing is cut into specific length tubing by specific length；
8) heat treatment: the tubing of well cutting is positioned over heat treatment 2-6h in 250-280 DEG C of baking oven, makes PPESK crystallization more perfect, with Time eliminate tubing internal stress.
The present invention realizes the device of the preparation method of above-mentioned inbred group breeding tubing, and it is by main and auxiliaries group Becoming, described main frame is a single screw extrusion machine, and described subsidiary engine includes feeding machine, die head, traction machine, cutting machine and baking Case, described traction machine includes actuating device, hold down gag and brake unit, it is characterised in that: described feeding machine is arranged on The feed zone of single screw extrusion machine, the feed hopper bottom of feeding machine arranges feeding control valve, and the discharging opening of single screw extrusion machine connects Getting to know, described die head is stent-type die head, and described single screw extrusion machine and die head outer wall arrange heater, the plug of die head Inside is provided with thermal medium flow channel, after the actuating device of traction machine is arranged on die head exit, installs cutting machine after traction machine, Baking oven is set after cutting machine, described baking oven be airtight can in circulation casing.
Further, the screw rod of described single screw extrusion machine is sudden change three-stage screw, a length of 15-22D in transportation section, A length of 3 ~ the 5D in compression section, a length of 5 ~ 8D of homogenizing zone, wherein D is the diameter of screw rod；Screw slenderness ratio is 25:1 to 33:1, pressure 2.0-3.0 is compared in contracting.
Further, described die head is stent-type die head, and the taper surface angle of described stent-type die head support is 35 ° To 45 °, described stent-type die head core rod flat segments draw ratio is 8 to 20；
Compared with prior art, advantages of the present invention is: start just to carry out heating, drying from feedstock, simultaneously to extruder Machine barrel and die head use Segmented heating, control each district temperature, remain inbred group breeding (PPESK) tubular object extruding The tight control of temperature, is difficult to carbonization of degrading, and during pipe outlet mould, structure is closely knit, and outward appearance smooths.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Wherein: 1, drive system；2, hopper；3, feeding control valve；4, machine barrel；5, heater；6, screw rod；7, die head；8、 Plug；9, traction machine；10, cutting machine；11, tubing；12, baking oven.
Detailed description of the invention
The present invention is described further with detailed description of the invention below in conjunction with the accompanying drawings, but the present invention can be by right Require that the multitude of different ways limiting and covering is implemented.
Embodiment 1:
As it is shown in figure 1, a kind of device preparing inbred group breeding tubing, it is made up of main and auxiliaries, described master Machine is a single screw extrusion machine, and described subsidiary engine includes feeding machine, die head 7, traction machine 9, cutting machine 10 and baking oven 12, described Traction machine 9 include that actuating device, hold down gag and brake unit, described feeding machine are arranged on the charging of single screw extrusion machine Section, arranges feeding control valve 3 bottom the hopper 2 of feeding machine, the screw rod of described single screw extrusion machine is sudden change three-stage screw, The a length of 15-22D in transportation section, a length of 3 ~ 5D in compression section, a length of 5 ~ 8D of homogenizing zone, screw slenderness ratio is 25:1 to 33:1, Compression ratio 2.0-3.0, the discharging opening of single screw extrusion machine connects to be touched, and 7, described die head 7 is stent-type die head, stent-type die head The taper surface angle of support be 35 ° to 45 ° stent-type die head flat segments draw ratios be 8 to 20；Described single screw extrusion machine and Die head 7 outer wall arranges heater 5, and plug 8 is internal is provided with thermal medium flow channel, and the actuating device of traction machine 9 is arranged on die head 7 After outlet, traction machine 9 installs cutting machine 10 below, arranges baking oven 12 after cutting machine 10, described baking oven 12 for airtight can in follow Ring casing.
Embodiment 2:
The preparation method of a kind of inbred group breeding tubing, comprises the steps:
1) dry: making hopper 2 dry PPESK, use 180 DEG C of circulating airs to be dried 8h, the moisture content making raw material is low In 0.2%；
2) feeding: the material after drying is put in extruder feed zone with uniform speed by feeding control valve 3；
3) extrusion plasticizing: use heater 5 that the machine barrel 4 points three sections of extruder is heated, according to property of raw material design temperature, Temperature controls as follows: district's feeding section temperature is 320 DEG C, and it is 330 DEG C that 2nd district melt compression section temperature, and three district's homogenizing zone temperature are 340 DEG C, connector temperature is 340 DEG C；Made by the friction between extruder barrel 4 temperature and material and machine barrel 4, screw rod 6 With, making mass transfer is the uniformly continuous melt with certain fluidity, and the screw speed of extruder is 15r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by die head 7 by melt flow stream from the revolving flowing of screw rod, Bullet through stent-type die head 7 is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, institute Die head 7 design temperature stated is 3rd district: previous district temperature is 340 DEG C, and the first two district's temperature is 335 DEG C, and 3rd district are flat segments heating District；The described flat segments thermal treatment zone uses syllogic step temperature, and flat segments syllogic step temperature is along pipe outlet direction Temperature be set as 330 DEG C, 300 DEG C and 240 DEG C；
5) molding/sizing: through staged cooling outlet mold aftershaping be circular pipe 11, also need inside tubing die head core rod to add Heat, injects deep fat in the thermal medium flow channel within plug 8, and plug 8 temperature is 230 DEG C；
6) traction: tubing 11 is at the uniform velocity drawn to cutting machine 10 via the compression belt of traction machine 9；
7) cutting: tubing 11 is cut into specific length tubing by specific length；
8) heat treatment: the tubing 11 of well cutting is positioned over heat treatment 6h in 270 DEG C of baking ovens 12, makes PPESK crystallization more perfect, simultaneously Eliminate the internal stress of tubing.
In this example, screw rod 6 is sudden change three-stage screw, a length of 18D in transportation section；The a length of 3D in compression section；Homogenizing zone A length of 8D；Screw slenderness ratio is 30:1, compression ratio 3.0；
In this example, die head 7 is stent-type die head, and the taper surface angle of die head support is 40 °, and die head flat segments draw ratio is 10。
In the present embodiment, mode of heating all uses resistance heating coil to heat.
Produce gained tubing article outer tube smooth, inwall light, section is closely knit, produces 120min continuously, tubing mouth die without Substantially buildup.
Embodiment 3:
The preparation method of a kind of inbred group breeding tubing, comprises the steps:
1) dry: making hopper 2 dry PPESK, use 200 DEG C of cycling hot, drying time is 3h, makes the aqueous of raw material Rate is less than 0.2%；
2) feeding: the material after drying is put in extruder feed zone by feeding machine with uniform speed；
3) extrusion plasticizing: heat the machine barrel 4 points three sections of extruder, according to property of raw material design temperature, temperature controls such as Under: district's feeding section temperature is 310 DEG C, and it is 320 DEG C that 2nd district melt compression section temperature, and three district's homogenizing zone temperature are 330 DEG C, connects Temperature is 330 DEG C；By the rubbing action between extruder barrel temperature and material and machine barrel 4, screw rod 6, material is made to turn Becoming the uniformly continuous melt with certain fluidity, the screw speed of extruder is 10 r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by from the revolving flowing of screw rod, through stent-type die head 7 Bullet is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, described die head design temperature Being 3rd district: previous district temperature is 330 DEG C, the first two district's temperature is 320 DEG C, and 3rd district are the flat segments thermal treatment zone；Described flat segments adds Hot-zone uses syllogic step temperature, flat segments syllogic step temperature be along the temperature in pipe outlet direction be set as 350 DEG C, 290 DEG C and 230 DEG C；
5) molding/sizing: through staged cooling outlet mold aftershaping be circular pipe 11, also need inside tubing die head core rod to add Heat, injects deep fat in the thermal medium flow channel within plug 8, and plug 8 temperature is 250 DEG C；
6) traction: tubing is at the uniform velocity drawn to cutting machine 10 via the compression belt of traction machine 8；
7) cutting: tubing 11 is cut into specific length tubing by specific length；
8) heat treatment: the tubing 11 of well cutting is positioned over heat treatment 6h in 250 DEG C of baking ovens, makes PPESK crystallization more perfect, disappears simultaneously Internal stress except tubing.
In this example, screw rod 6 is sudden change three-stage screw, a length of 22D in transportation section, a length of 5D in compression section, homogenizing zone A length of 5D；Screw slenderness ratio is 33:1, compression ratio 2.0；
In this example, head 7 is stent-type die head, it is characterised in that the taper surface angle of die head support is 45 °, die head core rod Flat segments draw ratio is 8；
In the present embodiment, equipment mode of heating all uses resistance heating coil to heat.
Produce gained tubing article outer tube smooth, inwall light, section is closely knit, produces 120min continuously, tubing mouth die without Substantially buildup.
Embodiment 4:
The preparation method of a kind of inbred group breeding tubing, comprises the steps:
1) dry: making hopper 2 dry PPESK, use 160 DEG C of cycling hot, drying time is 7h, makes the aqueous of raw material Rate is less than 0.2%；
2) feeding: the material after drying is put in extruder feed zone by feeding machine with uniform speed；
3) extrusion plasticizing: divide three sections to heat the machine barrel of extruder, according to property of raw material design temperature, temperature controls such as Under: district's feeding section temperature is 340 DEG C, and it is 350 DEG C that 2nd district melt compression section temperature, and three district's homogenizing zone temperature are 360 DEG C, connects Temperature is 360 DEG C；By the rubbing action between extruder barrel temperature and material and machine barrel, screw rod, make mass transfer For having the uniformly continuous melt of certain fluidity, the screw speed of extruder is 6r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by from the revolving flowing of screw rod, through the cone of stent-type die head Body is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, and described die head design temperature is 3rd district: previous district temperature is 360 DEG C, the first two district's temperature is 350 DEG C, and 3rd district are the flat segments thermal treatment zone；Described flat segments heating District uses syllogic step temperature, flat segments syllogic step temperature be along the temperature in pipe outlet direction be set as 330 DEG C, 310 DEG C and 250 DEG C；
5) molding/sizing: through staged cooling outlet mold aftershaping be inside circular pipe tubing die head core rod also need heating, Injecting deep fat in the thermal medium flow channel within plug 8, plug 8 temperature is 270 DEG C；
6) traction: tubing is at the uniform velocity drawn to cutting machine via compressing belt；
7) cutting: tubing is cut into specific length tubing by specific length；
8) heat treatment: the tubing of well cutting is positioned over heat treatment 2h in 280 DEG C of baking ovens, makes PPESK crystallization more perfect, eliminates simultaneously The internal stress of tubing.
In this example, screw rod 6 is sudden change three-stage screw, a length of 15D in transportation section, a length of 5D in compression section, homogenizing zone A length of 5D；Screw slenderness ratio is 25:1, compression ratio 2.5；
In this example, head 7 is stent-type die head, and the taper surface angle of die head support is 35 °, and die head flat segments draw ratio is 20；
In the present embodiment, equipment mode of heating all uses electromagnetic heating coil to heat.Which can preferably control to add Hot temperature.
Produce gained tubing article outer tube smooth, inwall light, section is closely knit, produces 120min continuously, tubing mouth die without Substantially buildup.
Embodiment 5:
The preparation method of a kind of inbred group breeding tubing, comprises the steps:
1) dry: making hopper 2 dry PPESK, use 160 DEG C of cycling hot, drying time is 7h, makes the aqueous of raw material Rate is less than 0.2%；
2) feeding: the material after drying is put in extruder feed zone by feeding machine with uniform speed；
3) extrusion plasticizing: divide three sections to heat the machine barrel of extruder, according to property of raw material design temperature, temperature controls such as Under: district's feeding section temperature is 340 DEG C, and it is 350 DEG C that 2nd district melt compression section temperature, and three district's homogenizing zone temperature are 360 DEG C, connects Temperature is 360 DEG C；By the rubbing action between extruder barrel temperature and material and machine barrel, screw rod, make mass transfer For having the uniformly continuous melt of certain fluidity, the screw speed of extruder is 6r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by from the revolving flowing of screw rod, through the cone of stent-type die head Body is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, and described die head design temperature is 3rd district: previous district temperature is 360 DEG C, the first two district's temperature is 350 DEG C, and 3rd district are the flat segments thermal treatment zone；Described flat segments heating District uses syllogic step temperature, flat segments syllogic step temperature be along the temperature in pipe outlet direction be set as 330 DEG C, 310 DEG C and 250 DEG C；
5) molding/sizing: through staged cooling outlet mold aftershaping be inside circular pipe tubing die head core rod also need heating, Injecting deep fat in the thermal medium flow channel within plug 8, plug 8 temperature is 270 DEG C；
6) traction: tubing is at the uniform velocity drawn to cutting machine via compressing belt；
7) cutting: tubing is cut into specific length tubing by specific length；
8) heat treatment: the tubing of well cutting is positioned over heat treatment 2h in 280 DEG C of baking ovens, makes PPESK crystallization more perfect, eliminates simultaneously The internal stress of tubing.
In this example, screw rod 6 is sudden change three-stage screw, a length of 15D in transportation section, a length of 4D in compression section, homogenizing zone A length of 6D；Screw slenderness ratio is 28:1, compression ratio 2.5；
In this example, head 7 is stent-type die head, and the taper surface angle of die head support is 35 °, and die head flat segments draw ratio is 20；
In the present embodiment, equipment mode of heating all uses electromagnetic heating coil to heat.Which can preferably control to add Hot temperature.
Produce gained tubing article outer tube smooth, inwall light, section is closely knit, produces 120min continuously, tubing mouth die without Substantially buildup.
Comparative example 1:
1, the preparation method of a kind of inbred group breeding tubing, comprises the steps:
1) dry: making hopper 2 dry PPESK, use 200 DEG C of cycling hot, drying time is 3h, makes the aqueous of raw material Rate is less than 0.2%；
2) feeding: the material after drying is put in extruder feed zone by feeding machine with uniform speed；
3) extrusion plasticizing: divide three sections to heat the machine barrel of extruder, according to property of raw material design temperature, temperature controls such as Under: district's feeding section temperature is 340 DEG C, and it is 350 DEG C that 2nd district melt compression section temperature, and three district's homogenizing zone temperature are 360 DEG C, connects Temperature is 360 DEG C；By the rubbing action between extruder barrel temperature and material and machine barrel, screw rod, make mass transfer For having the uniformly continuous melt of certain fluidity, the screw speed of extruder is 8r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by from the revolving flowing of screw rod, through the cone of stent-type die head Body is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, and described die head design temperature is 3rd district: previous district temperature is 360 DEG C, the first two district's temperature is 350 DEG C, and 3rd district are the flat segments thermal treatment zone；Described flat segments heating District uses syllogic step temperature, flat segments syllogic step temperature be along the temperature in pipe outlet direction be set as 330 DEG C, 310 DEG C and 250 DEG C；
5) molding/sizing: be circular pipe through staged cooling outlet mold aftershaping, tubing die head core rod is internal without heating；
6) traction: tubing is at the uniform velocity drawn to cutting machine via compressing belt；
7) cutting: tubing is cut into specific length tubing by specific length；
8) heat treatment: the tubing of well cutting is positioned over heat treatment 2h in 280 DEG C of baking ovens, makes PPESK crystallization more perfect, eliminates simultaneously The internal stress of tubing.
In this example, screw rod 6 is sudden change three-stage screw, a length of 10D in transportation section, a length of 5D in compression section, homogenizing zone A length of 5D；Screw slenderness ratio is 20:1, compression ratio 2.5；
In this example, head 7 is stent-type die head, and the taper surface angle of die head support is 35 °, and die head flat segments draw ratio is 10；
In the present embodiment, equipment mode of heating all uses resistance heating coil to heat.
Produce gained tubing article can not plasticizing forming, tubing outward appearance and inner wall coarse completely, there is obvious spue line Defect, the situations such as spue line position is cracking.
Comparative example 2:
1, the preparation method of a kind of inbred group breeding tubing, it is characterised in that comprise the steps:
1) dry: making hopper 2 dry PPESK, use 200 DEG C of cycling hot, drying time is 3h, makes the aqueous of raw material Rate is less than 0.2%；
2) feeding: the material after drying is put in extruder feed zone by feeding machine with uniform speed；
3) extrusion plasticizing: divide three sections to heat the machine barrel of extruder, according to property of raw material design temperature, temperature controls such as Under: district's feeding section temperature is 340 DEG C, and it is 350 DEG C that 2nd district melt compression section temperature, and three district's homogenizing zone temperature are 360 DEG C, connects Temperature is 360 DEG C；By the rubbing action between extruder barrel temperature and material and machine barrel, screw rod, make mass transfer For having the uniformly continuous melt of certain fluidity, the screw speed of extruder is 8r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by from the revolving flowing of screw rod, through the cone of stent-type die head Body is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, and described die head design temperature is 3rd district: previous district temperature is 360 DEG C, the first two district's temperature is 350 DEG C, and 3rd district are the flat segments thermal treatment zone；Described flat segments heating District uses syllogic step temperature, flat segments syllogic step temperature be along the temperature in pipe outlet direction be set as 330 DEG C, 310 DEG C and 250 DEG C；
5) molding/sizing: through staged cooling outlet mold aftershaping be circular pipe, also need inside tubing die head core rod to add Heat, injects deep fat in the thermal medium flow channel within plug, and plug temperature is 250 DEG C；
6) traction: tubing is at the uniform velocity drawn to cutting machine via compressing belt；
7) cutting: tubing is cut into specific length tubing by specific length；
8) heat treatment: the tubing of well cutting is positioned over heat treatment 2h in 280 DEG C of baking ovens, makes PPESK crystallization more perfect, eliminates simultaneously The internal stress of tubing.
In this example, screw rod 6 is sudden change three-stage screw, a length of 22D in transportation section, a length of 5D in compression section, homogenizing zone A length of 8D；Screw slenderness ratio is 35:1, compression ratio 2.5；
In this example, head 7 is stent-type die head, and the taper surface angle of die head support is 35 °, and die head flat segments draw ratio is 12；
In the present embodiment, equipment mode of heating all uses resistance heating coil to heat.
Producing gained tubing article to occur significantly degrading situation, there is black lines, produces continuously in tubing outward appearance After 120min, there is obvious mouth die buildup situation in mouth die, and products appearance scratches clearly.

Claims (4)

1. the preparation method of an inbred group breeding tubing, it is characterised in that comprise the steps:
1) dry: using 160-200 DEG C of circulating air to be dried PPESK, drying time is 3-8h, makes the moisture content of raw material Less than 0.2%；
2) feeding: the material after drying is put in extruder feed zone by feeding machine with uniform speed；
3) extrusion plasticizing: divide three sections to heat the machine barrel of extruder, temperature controls as follows: district's feeding section temperature is 310- 340 DEG C, 2nd district melt compression section temperature and are 320-350 DEG C, and three district's homogenizing zone temperature are 330-360 DEG C, and connector temperature is 330-360℃；By the rubbing action between extruder barrel temperature and material and machine barrel, screw rod, making mass transfer is tool Having the uniformly continuous melt of certain fluidity, the screw speed of extruder is 5-15 r/min；
4) homogenizing shunting: there is the improving uniformity of melt of mobility, by from the revolving flowing of screw rod, through the cone of stent-type die head Body is further homogenized and is changed into streamlined flow, and the melt of streamlined flow enters flat segments, and described die head design temperature is 3rd district: previous district temperature is 330-360 DEG C, the first two district's temperature is 320-350 DEG C, and 3rd district are the flat segments thermal treatment zone；Described is flat The straight section thermal treatment zone uses syllogic step temperature, and flat segments syllogic step temperature is to be set as along the temperature in pipe outlet direction 330-350 DEG C, 290-310 DEG C and 230-250 DEG C；
5) molding/sizing: be circular pipe through staged cooling outlet mold aftershaping, the internal temperature control of die head core rod, plug temperature Degree is 200 ~ 280 DEG C；
6) traction: tubing is at the uniform velocity drawn to cutting machine via compressing belt；
7) cutting: tubing is cut into specific length tubing by specific length；
8) heat treatment: the tubing of well cutting is positioned over heat treatment 2-6h in 250-280 DEG C of baking oven, makes PPESK crystallization more perfect, with Time eliminate tubing internal stress.
2. realizing the device of the preparation method of inbred group breeding tubing described in claim 1, it is by main and auxiliaries Composition, described main frame is a single screw extrusion machine, and described subsidiary engine includes feeding machine, die head, traction machine, cutting machine and baking Case, described traction machine includes actuating device, hold down gag and brake unit, it is characterised in that: described feeding machine is arranged on The feed zone of single screw extrusion machine, the feed hopper bottom of feeding machine arranges feeding control valve, the screw rod of described single screw extrusion machine For sudden change three-stage screw, the discharging opening of single screw extrusion machine connects gets to know, and described die head is stent-type die head, described list Screw extruder and die head outer wall arrange heater, are provided with thermal medium flow channel inside the plug of die head, the transmission of traction machine After device is arranged on die head exit, after traction machine install cutting machine, baking oven is set after cutting machine, described baking oven be airtight can Interior circulation casing.
The device preparing inbred group breeding tubing the most according to claim 2, it is characterised in that: described screw rod For sudden change three-stage screw, a length of 15 ~ 22D in transportation section, a length of 3 ~ 5D in compression section, a length of 5 ~ 8D of homogenizing zone；Screw rod is long Footpath is than for 25:1 to 33:1, compression ratio 2.0 to 3.0.
The device preparing inbred group breeding tubing the most according to claim 2, it is characterised in that: described support The taper surface angle of coventry type die head coventry support is 35 ° to 45 °, and described stent-type die head core rod flat segments draw ratio is 8 to 20.
CN201610746192.XA 2016-08-29 2016-08-29 The preparation method of a kind of inbred group breeding (PPESK) tubing and device Withdrawn CN106273303A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106273352A (en) * 2016-08-29 2017-01-04 武汉金牛经济发展有限公司 The preparation method of a kind of inbred group breeding (PPESK) tubing and device
WO2020240161A1 (en) * 2019-05-31 2020-12-03 Victrex Manufacturing Limited Improved polymer and pipe manufacture
CN112454854A (en) * 2020-10-31 2021-03-09 张家港三佳机械科技有限公司 Blowing raw material particle melting and supplying device
CN113530464A (en) * 2020-04-17 2021-10-22 中国石油化工股份有限公司 Oil well pipe and method for manufacturing same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106273352A (en) * 2016-08-29 2017-01-04 武汉金牛经济发展有限公司 The preparation method of a kind of inbred group breeding (PPESK) tubing and device
WO2020240161A1 (en) * 2019-05-31 2020-12-03 Victrex Manufacturing Limited Improved polymer and pipe manufacture
CN113530464A (en) * 2020-04-17 2021-10-22 中国石油化工股份有限公司 Oil well pipe and method for manufacturing same
CN112454854A (en) * 2020-10-31 2021-03-09 张家港三佳机械科技有限公司 Blowing raw material particle melting and supplying device

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Application publication date: 20170104