CN102085718A - Oil processing special-purpose temperature-resistant pressure-resistant circumferential self-reinforcing plastic pipe forming device - Google Patents
Oil processing special-purpose temperature-resistant pressure-resistant circumferential self-reinforcing plastic pipe forming device Download PDFInfo
- Publication number
- CN102085718A CN102085718A CN2009101917799A CN200910191779A CN102085718A CN 102085718 A CN102085718 A CN 102085718A CN 2009101917799 A CN2009101917799 A CN 2009101917799A CN 200910191779 A CN200910191779 A CN 200910191779A CN 102085718 A CN102085718 A CN 102085718A
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- China
- Prior art keywords
- circumferential
- plastic pipe
- shear stress
- pipe
- oil processing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
- B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the material
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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
- B29C48/03—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
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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
-
- 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
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a device for producing and manufacturing various plastic pipe products..The device is characterized in that it comprises a segment temperature controllable temperature gradient field generating apparatus and a circumferential shear stress field generating apparatus; and can realize the pipe-extruding forming technology by coupling the temperature gradient field and the circumferential shear stress field; the plastic pipes prepared by the device of the invention has the advantages of circumferentially enhancing the pipe intensity and modulus, more optimally allocating the material performance, improving the satisfaction of the material performance implementation requirement to the pipes internally extruded. Thus the enhanced pipes has higher circumferentially oriented degree, higher wafer thickness and higher degree of crystallization than conventional pipes; thereby achieving higher emperature toleration than the conventional pipes; and is especially suitable for using as oil processing special-purpose pipe. The device of the invention has the advantages of few investment equipments, low production cost, excellent product performance and good industrialization prospect.
Description
Technical field:
Present technique relates to the former that various plastic pipe products are manufactured, and especially relates to the special-purpose heat resisting and pressure resisting plastic pipe of oil processing is upwards realized self-reinforcing in its week extrusion equipment.
Background technology:
In the waste oil recycling and the process of re-refining, the pipeline of delivering oil not only needs to bear corrosion, but also often needs to bear certain pressure and temperature.But plastic pipe is plastic products after all, its stiffness and strength and heat resistance etc. are all far away from cast iron pipe, in order to satisfy the application in the waste oil recycling and the process of re-refining, just need to improve the compressive resistance and the heat resistance of plastic pipe, as adopt commonsense method to improve the wall thickness that its intensity just must increase tubing, but wall thickness has brought again by nonuniform heating or cooling after increasing, during solid-state phase changes with Volume Changes, the additional internal stress that factors such as the difference of each several part deformation extent and contraction obstruction cause, these additional internal stress will be through making the force-bearing situation of tubing worsen more after the stack.Therefore rely on the method that increases tube wall thickness will cause the internal stress of tubing to produce more disadvantageous synergistic effect merely, and the degradation factor also make the wall thickness of tubing not thicken arbitrarily under the economic benefit that causes because wall thickness increase materials increase.And conventional at present plastic pipe extrusion equipment device also can't overcome the predicament of so facing a difficult choice.Though also developed the shaped device of many self-reinforced plastic pipes in recent years, but since self-reinforced structure by these tubing of being obtained of device and effect again because it is in higher temperature environment a large amount of fusions reply and disappear, thereby to improve effect be not obvious especially all the time.
Summary of the invention:
The objective of the invention is to overcome tubing that the plastic pipe extrusion equipment device of present routine produced and can't satisfy not only thin-walled, low-cost but also have a deficiency of higher stiffness and heat resistance etc. simultaneously, particularly the new method that is occurred in recent years can't be retained the deficiency of self-reinforced structure and effect, provides a kind of can and the interpolation at same wall thickness to promote tubing circumferential strength and heat resistance under the prerequisite of any other reinforcing agent simultaneously and these are improved the extrusion equipment device that effect remains.
The object of the present invention is achieved like this: in order to promote the tubing circumferential strength, and don't increase its wall thickness and add other any reinforcing agents, a kind of temperature gradient field of then special design and circumferential shear stress field coupling extruded circumferential self-reinforcing tube forming device, utilize the temperature gradient field of this device and the coupling of shear stress field in the extrusion molding process, to form along the big molecule of tubing circumferential orientation crystallization, the high-performance condensed state structure of polymer such as shish-kebab and shish-kebab interlocking, and these high-performance condensed state structures are resided in the heterogeneous microstructure of final products.Be characterized in whole forming process is applied the temperature gradient field of a sectional temperature control and the tubing of extrusion molding is applied circumferential shear stress field, make microstructures such as polymer macromolecule and macromolecular chain under the influence of this circumferential shear stress field drives, form big molecule along the crystallization of tubing circumferential orientation, the high-performance condensed state structure of polymer such as shish-kebab and shish-kebab interlocking utilizes the sectional temperature-controlled function of temperature gradient field will circumferentially strengthen temperature behind the profiled section simultaneously and is controlled at and makes the big molecule along the crystallization of tubing circumferential orientation that is obtained in the solid plastics temperature environment that is lower than under the melting temperature, the high-performance condensed state structure of polymer such as shish-kebab and shish-kebab interlocking resides in the heterogeneous microstructure of goods.
Apparatus of the present invention the mechanism of the circumferential self-reinforcing of tubing is achieved in that allow plastic material in the process of extrusion molding plastic pipe by a circumferential shear stress field, this stress field is produced and control and regulation by a special crowded pipe unit, and this device is in the temperature gradient field of a sectional temperature control always.In the extrusion molding process of plastic pipe, when molten plastic passes through the shear stress field of this device, the shearing rotation inducing action of rotating guide owing to the shearing in this stress field produces linear nucleus---fibril, and linear nucleus is constantly grown under the continuation effect of shear-induced, is orientated, is arranged in order and finally forms along the big molecule of the circumferential oriented crystalline of tubing, shish-kebab and shish-kebab interlocking structure.Sectional temperature-controlled function by temperature gradient field just remains the formation in a single day of these structures crystallization fusion and the orientation answer of having avoided under the condition of high temperature in polymer pipe simultaneously.Apparatus of the present invention that Here it is can make polymer pipe obtain the mechanism of circumferential self-reinforcing.
The principle that apparatus of the present invention strengthen properties of product with the oriented crystalline structure of polymer macromolecule is applied to the manufacturing industry of plastic pipe and the sectional temperature-controlled function by temperature gradient field is kept these performances, therefore, the plastic pipe that utilizes apparatus of the present invention to produce, the intensity of tubing and modulus all can obtain the enhancing that makes progress in week, promoted satisfy be subjected in the pressure pipe material to the current demand of material property.The wafer thickness of tubing is thicker after strengthening, and degree of crystallinity is higher, thereby the also more conventional tubing of its heat resistance has improvement, is especially suitable for use as to be the oil processing pipe special.The present device small investment, producing cost is cheap and product properties is good, has the good industrialized prospect.
Description of drawings:
Fig. 1 squeezes pipe unit structural principle schematic diagram for temperature gradient field of the present invention and circumferential shear stress field coupling
The microcosmic molecular structure model schematic diagram of the circumferential self-reinforcing tubing inside that Fig. 2 produces for apparatus of the present invention
Among the figure:
1. mouthful mould is 2. sheared turnbarrel, 3. plug, 4. molten plastic, 5. thermometer hole, 6. temperature control and regulation device, 7. oriented crystalline shish-kebab structure, 8. oriented crystalline shish-kebab interlocking structure, the 9. big molecule of oriented crystalline.
I. die temperature I section, II. die temperature II section.
A. molten state plastics, the B. solid plastics.
A. shear stress field section, b. cooling and shaping section.
Specific embodiment:
Before squeezing pipe production, temperature section control and regulation function by temperature control and regulation device 6 will the crowded pipe unit of whole circumferential shear stress field the die temperature segmentation to be controlled to be die temperature I section be on the melting temperature, die temperature II section is the solid plastics section under the melting temperature, then the state of each section of plastic melt is in Zhuan Zhi the temperature stabilization deutostoma mould: A is the molten state plastics, and B is a solid plastics.Open extruder and extrude molten plastic 4, when molten plastic 4 is flowed through the circumferential shear stress field section a of plug 3, owing to the shearing rotation inducing action of shearing turnbarrel 2 makes molten plastic 4 produce linear nucleus---fibrils, linear nucleus is constantly grown under the continuation effect of the shear-induced of shearing turnbarrel 2, be orientated, is arranged in order and finally forms the shish-kebab structure 7, shish-kebab interlocking structure 8 of oriented crystalline and molecule and macromolecular chain 9 greatly.Big molecule and macromolecular chain 9, shish-kebab 7, shish-kebab interlocking structure 8 owing to these oriented crystallines forms in the solid plastics temperature environment that just enters mouthful mould II section of section under the melting temperature afterwards immediately simultaneously, thereby these structures obtain to strengthen improvement in case formation just remains the circumferential performance of impelling tubing in polymer pipe.
Claims (4)
1. the shaped device of the special-purpose heat resisting and pressure resisting circumferential self-reinforced plastic pipe of oil processing is characterized in that this shaped device contains temperature gradient field and two generating means of shear stress field.
2. the shaped device of the special-purpose heat resisting and pressure resisting circumferential self-reinforced plastic pipe of a kind of oil processing according to claim 1 is characterized in that the temperature gradient field generating means of this device mainly comprises the temperature control and regulation device that can realize sectional temperature-controlled function.
3. the shaped device of the special-purpose heat resisting and pressure resisting circumferential self-reinforced plastic pipe of a kind of oil processing according to claim 1 is characterized in that this device contains a generating means that can circumferentially form shear stress field along tubing.
4. the shaped device of the special-purpose heat resisting and pressure resisting circumferential self-reinforced plastic pipe of a kind of oil processing according to claim 3, it is characterized in that in the circumferential shear stress field generating means of this device, be provided with a sleeve that can rotate in a circumferential direction shearing and induce the circumferential shear stress field of generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101917799A CN102085718A (en) | 2009-12-07 | 2009-12-07 | Oil processing special-purpose temperature-resistant pressure-resistant circumferential self-reinforcing plastic pipe forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101917799A CN102085718A (en) | 2009-12-07 | 2009-12-07 | Oil processing special-purpose temperature-resistant pressure-resistant circumferential self-reinforcing plastic pipe forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102085718A true CN102085718A (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101917799A Pending CN102085718A (en) | 2009-12-07 | 2009-12-07 | Oil processing special-purpose temperature-resistant pressure-resistant circumferential self-reinforcing plastic pipe forming device |
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| Country | Link |
|---|---|
| CN (1) | CN102085718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527817A (en) * | 2018-04-13 | 2018-09-14 | 安徽恒森新材料有限公司 | A kind of differential method crystallization enhancing PP material cortex intensity methods |
-
2009
- 2009-12-07 CN CN2009101917799A patent/CN102085718A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527817A (en) * | 2018-04-13 | 2018-09-14 | 安徽恒森新材料有限公司 | A kind of differential method crystallization enhancing PP material cortex intensity methods |
| CN108527817B (en) * | 2018-04-13 | 2021-01-15 | 安徽恒森新材料有限公司 | Method for enhancing strength of PP material cortex through differential crystallization |
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Application publication date: 20110608 |