CN102009472B - Thermal stretch processing method of ultra-high molecular weight polyethylene diaphragm - Google Patents
Thermal stretch processing method of ultra-high molecular weight polyethylene diaphragm Download PDFInfo
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- CN102009472B CN102009472B CN 201010506628 CN201010506628A CN102009472B CN 102009472 B CN102009472 B CN 102009472B CN 201010506628 CN201010506628 CN 201010506628 CN 201010506628 A CN201010506628 A CN 201010506628A CN 102009472 B CN102009472 B CN 102009472B
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- calender
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- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 title claims abstract description 25
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 title claims abstract description 25
- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 4
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 4
- 239000004014 plasticizer Substances 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000003490 calendering Methods 0.000 claims description 18
- 230000008676 import Effects 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 241000209094 Oryza Species 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 235000006708 antioxidants Nutrition 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 239000010408 film Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000011514 vinification Methods 0.000 description 1
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a thermal stretch processing method of an ultra-high molecular weight polyethylene diaphragm, comprising the following steps of: (1) taking raw materials of ultra-high molecular weight polyethylene resin, polyethlene wax, a plasticizer and an antioxidant for backup according to the following proportion by weight; (2) after mixing the mixture, putting the mixture into a single screw extruder to extrude a tube; (3) arranging a cutting tool on the lower part of an outlet of a tube mould of the single screw extruder to longitudinally cut the tube; (4) putting the cut tube into a wedge mould, spreading the tube into a plate material; (5) rolling the plate material into a diaphragm blank; (6) stretching the diaphragm blank when passing through a first heating channel; (7) guiding the rolled and stretched diaphragm blank into a second heating channel to heat; (8) guiding the heated diaphragm blank into a fourth calendar to roll and stretch the diaphragm blank rolled by the fourth calendar into a diaphragm product; and (9) forming the diaphragm product by a forming machine, and winding the diaphragm product. The finished product processed by the thermal stretch processing method has low cost and high efficiency, the tensile strength of the finished product can reach above 300MPa, the elasticity modulus can reach above 100g/d, and the like.
Description
Technical field
The present invention relates to the High molecular weight polyethylene product, is a kind of ultra high molecular weight polyethylene films sheet hot-stretch processing method.
Background technology
Product with the ultra-high molecular weight polyethylene thin-film material is made has multiple high-quality performances such as high tensile strength, wearability, and therefore, the ultra-high molecular weight polyethylene film product is applied in multiple field gradually.Yet it is the higher technology of a kind of difficulty that superhigh molecular weight polyethylene material is made film.External general slab or the cylinder that the ultra-high molecular weight polyethylene sintering is processed that adopt, unidirectional again or biaxial tension pulls into film with it after the section.The deficiency of this film-forming method is: the quantity-produced thin-film width can not strengthen arbitrarily as required; Process equipment is complicated; Production efficiency is low; Generally about 5 times, the manufacturing cost of film is expensive for draw ratio when producing continuously, and the filter membrane that uses with wine-making industry is example, the film of 0.012 millimeters thick, and price is generally at 180 yuan/m
2The price of this costliness has hindered the expansion of ultra-high molecular weight polyethylene film range of application.
Summary of the invention
The purpose of this invention is to provide a kind of ultra high molecular weight polyethylene films sheet hot-stretch processing method, it adopts and extrudes hot-drawing method manufacturing diaphragm, solves the deficiency that prior art exists.
The present invention is for realizing above-mentioned purpose, and realize through following technical scheme: ultra high molecular weight polyethylene films sheet hot-stretch processing method may further comprise the steps:
1. get raw material for standby by following weight proportion: polyvinyl resin with super-high molecular weight 93kg, Tissuemat E 4.5kg, plasticizer 2kg and anti-oxidant 0.5kg;
2. insert extruding pipe material in the single screw extrusion machine after each raw material being mixed;
3. in the pipe mold of single screw extrusion machine outlet bottom cutting tool is installed, cutting tool along the tubing bottom tube wall tubing is vertically cut open;
4. the tubing after cutting open gets in the wedge shape mould, and tubing is launched to become profile material;
5. profile material is imported and carry out first order calendering in first calender, the roller temperature of first calender is 100 ℃-120 ℃, obtains the diaphragm parison after the calendering;
6. the diaphragm parison is imported in first heat tunnel and heat; Temperature in first heat tunnel is 90 ℃-120 ℃; Be introduced into through the diaphragm parison of first heat tunnel and carry out second level calendering in second calender; When rolled the second level, the speed of the second calender roll was 4 times of the first calender speed of rolls, is stretched when making the diaphragm parison through first heat tunnel;
7. the diaphragm parison that 6. rolls after the stretching through step imports heating in second heat tunnel; The temperature of second heat tunnel is 120 ℃-140 ℃; Import through the diaphragm parison behind second heat tunnel and to carry out third level calendering in the 3rd calender; The 3rd calender roller temperature is 90 ℃-130 ℃, and the speed of the 3rd calender roll is 2-3 times of the second calender speed of rolls;
8. import the 3rd heat tunnel through the diaphragm parison after the third level calendering; Temperature in the 3rd heat tunnel is 120-140 ℃; Diaphragm parison after being heated imports in the 4th calender and rolls; The 4th calender roller temperature is 90-130 ℃, and the speed of the 4th calender roll is 2 times of the 3rd calender speed of rolls, is drawn into the diaphragm finished product through heating of the 3rd heat tunnel and the diaphragm parison after the calendering of the 4th calender;
9. the diaphragm finished product gets into typing back rolling in the forming machine at last;
The structure of first heat tunnel described in the above-mentioned steps, second heat tunnel and the 3rd heat tunnel is all identical, and concrete structure is: heat tunnel upper and lower, left and right wall is interconnected to housing, and the centre is provided with cavity; Cavity middle part walking ultra-high molecular weight polyethylene section bar; Heat-insulation layer is set in the housing, and heat-insulation layer is connected with the reflecting layer, and heater is installed on the reflecting layer; Ultra-high molecular weight polyethylene section bar upper and lower surface is provided with the first heat scatternet and the second heat scatternet respectively; The first heat scatternet is connected with the reflecting layer sidewall respectively with the second heat scatternet, offers port on the front and rear wall of heat tunnel respectively, and the diaphragm parison is passed through.The length of first heat tunnel is 0.95-1.05 rice.The length of the length of second heat tunnel and the 3rd heat tunnel is 0.45-0.55 rice.
Be provided with the herringbone guide plate in the mould of the wedge shape mould described in the step 4; The height of herringbone guide plate by the peak of porch to the exit gradually step-down to become same plane with the exit; Two sidewalls of herringbone guide plate and mould have constituted the first fractal groove and the second fractal groove respectively; Cover plate is placed at the top of mould, and cover plate and herringbone guide plate end face are provided with spacing.
The invention has the advantages that: the present invention adopts method machined diaphragm such as single screw rod is extruded, hot-stretch, and the manufacturing cost of diaphragm is reduced significantly.Adopt method of the present invention can produce the diaphragm of thickness more than 0.01 millimeter, processing method of the present invention all adopts common process equipment to accomplish, and the device fabrication cost is low; In the drawing process environment is not had specific (special) requirements, the whole machining process method is a kind of continuous processing, does not stop; Dishoarding; Do not use solvent, the ultra-high molecular weight polyethylene product is not had any pollution, enlarged the range of application of ultra-high molecular weight polyethylene film and diaphragm.Use the inventive method product processed, cost is low, and production efficiency is high, and the tensile strength of product can reach more than the 300MPa, and elastic modelling quantity reaches 100g/d with first-class.
Description of drawings
Fig. 1 is various device and the process chart that uses in the processing method of the present invention; Fig. 2 is that the A of wedge shape mould 4 among Fig. 1 is to the structure for amplifying sketch map; Fig. 3 is that the B-B of first heat tunnel 6 among Fig. 1 analyses and observe the structure for amplifying sketch map; Fig. 4 is that the C of forming machine 12 among Fig. 1 is to the structure for amplifying sketch map.Fig. 5 is the perspective view of wedge shape mould 4.
Among the figure, the 1st, single screw extrusion machine, the 2nd, pipe mold, the 3rd, cutting tool, the 4th, wedge shape mould; 5 is first calenders, and 6 is first heat tunnels, and 7 is second calenders, and 8 is second heat tunnels, and 9 is the 3rd calenders; 10 is the 3rd heat tunnels, and 11 is the 4th calenders, the 12nd, and forming machine, the 13rd, winder, the 14th, processed ultra-high molecular weight polyethylene section bar; 15 is topping rolls of the 3rd calender 9, the 16th, and the roll of forming machine, the 17th, motor, the 18th, the herringbone guide plate of wedge shape mould 4, the 19th, the first fractal groove of wedge shape mould; The 20th, the second fractal groove of wedge shape mould, the 21st, housing, the 22nd, heater, 23 is first heat scatternets; 24 is second heat scatternets, the 25th, and heat-insulation layer, the 26th, reflecting layer, the 27th, cover plate.
The specific embodiment
The present invention further explains as follows:
Processing method of the present invention is that superhigh molecular weight polyethylene material is carried out the product that heat drawing is produced diaphragm at last, and the thickness of diaphragm is more than 0.01 millimeter, according to the difference of field of employment; The thickness of product diaphragm is different, is adding man-hour, can adjust the thickness of tubing as required; To adapt to the draw ratio in the process, perhaps adjust the length and the temperature of heat tunnel, and adjust the speed of rolls of calender simultaneously; To adapt to the draw ratio in the process, obtain needed different diaphragm thickness, for example: tubing thickness is 8 millimeters; Through after the hot-stretch method of the embodiment of the invention, can obtain the diaphragm of 0.5 millimeters thick.
Ultra high molecular weight polyethylene films sheet hot-stretch processing method of the present invention may further comprise the steps:
1. get raw material for standby by following weight proportion: polyvinyl resin with super-high molecular weight 93kg, Tissuemat E 4.5kg, plasticizer 2kg and anti-oxidant 0.5kg;
2. insert extruding pipe material in the single screw extrusion machine after each raw material being mixed;
3. in the pipe mold of single screw extrusion machine outlet bottom cutting tool is installed, cutting tool along the tubing bottom tube wall tubing is vertically cut open;
4. the tubing after cutting open gets in the wedge shape mould, and tubing is launched to become profile material;
5. profile material is imported and carry out first order calendering in first calender, the roller temperature of first calender is 100 ℃-120 ℃, obtains the diaphragm parison after the calendering;
6. the diaphragm parison is imported in first heat tunnel and heat; Temperature in first heat tunnel is 90 ℃-120 ℃; Be introduced into through the diaphragm parison of first heat tunnel and carry out second level calendering in second calender, during the calendering of the second level, the speed of the second calender roll is 4 times of the first calender speed of rolls; Be stretched when making the diaphragm parison through first heat tunnel, draw ratio is 4 times;
7. the diaphragm parison that 6. rolls after the stretching through step imports heating in second heat tunnel; The temperature of second heat tunnel is 120 ℃-140 ℃; Import through the diaphragm parison behind second heat tunnel and to carry out third level calendering in the 3rd calender; The 3rd calender roller temperature is 90 ℃-130 ℃, and the speed of the 3rd calender roll is 2-3 times of the second calender speed of rolls, and the draw ratio of diaphragm parison is 2-3 times;
8. import the 3rd heat tunnel through the diaphragm parison after the third level calendering; Temperature in the 3rd heat tunnel is 120-140 ℃; Diaphragm parison after being heated imports in the 4th calender and rolls; The 4th calender roller temperature is 90-130 ℃, and the speed of the 4th calender roll is 2 times of the 3rd calender speed of rolls, and being stretched through the 3rd heat tunnel heating and the diaphragm parison after the 4th calender rolls becomes the diaphragm finished product after 2 times;
9. the diaphragm finished product gets into typing back rolling in the forming machine at last.
The structure of first heat tunnel described in the above-mentioned steps, second heat tunnel and the 3rd heat tunnel is all identical, and concrete structure is: heat tunnel upper and lower, left and right wall is interconnected to housing 21, and the centre is provided with cavity; Cavity middle part walking ultra-high molecular weight polyethylene section bar 14, housing 21 is box-like, adopts hinge to connect; Can upper and lower two parts be opened; Heat-insulation layer 25 is set in the housing 21, and heat-insulation layer 25 is connected with reflecting layer 26, and heater 22 is installed on the reflecting layer 26; Ultra-high molecular weight polyethylene section bar 14 upper and lower surfaces are provided with the first heat scatternet 23 and the second heat scatternet 24 respectively; The first heat scatternet 23 is connected with reflecting layer 26 sidewalls respectively with the second heat scatternet 24, offers port on the front and rear wall of heat tunnel respectively, and the diaphragm parison is passed through.
Wedge shape mould described in the step 4 structure as shown in Figure 5; The wedge shape mould base plate is the plane; Be provided with two sidewalls on the base plate, exit width is provided with herringbone guide plate 18 greater than throat width in the mould; The height of herringbone guide plate 18 by the peak of porch to the exit gradually step-down to become same plane with the exit; Herringbone guide plate 18 has constituted the first fractal groove 19 and the second fractal groove 20 respectively with two sidewalls of mould, and cover plate 27 is placed at the top of mould, and cover plate 27 is provided with spacing with herringbone guide plate 18 end faces.The size of this spacing confirms that by the thickness of tubing the tubing after the cutting is imported into wedge shape mould, and the tubing bottom is broken away the inlet entering of back by wedge shape mould, after coming out, becomes profile material.Tubing generate profile material after this wedge shape mould can quick and accurate will be cut open is for the hot-stretch of subsequent processing provides good section bar basis.
The length of first heat tunnel according to the invention is 0.95-1.05 rice, and the length of second heat tunnel and the 3rd heat tunnel is 0.45-0.55 rice.The length of above-mentioned heat tunnel is one of reasonable embodiment in the processing method of the present invention, and certainly, the length of each heat tunnel also can be according to the needs setting of draw ratio, lengthening or shortening.
The concrete structure of the single screw extrusion machine that uses in the inventive method is that disclosed structure is identical in 00215903.1 specification with the patent No..The calender that uses in the inventive method is known calender, and the structure of forming machine 12 described in the inventive method and winder 13 is a known technology.
Claims (4)
1. ultra high molecular weight polyethylene films sheet hot-stretch processing method is characterized in that: may further comprise the steps:
1. get raw material for standby by following weight proportion: polyvinyl resin with super-high molecular weight 93kg, Tissuemat E 4.5kg, plasticizer 2kg and anti-oxidant 0.5kg;
2. insert extruding pipe material in the single screw extrusion machine after each raw material being mixed;
3. in the pipe mold of single screw extrusion machine outlet bottom cutting tool is installed, cutting tool along the tubing bottom tube wall tubing is vertically cut open;
4. the tubing after cutting open gets in the wedge shape mould, and tubing is launched to become profile material;
5. profile material is imported and carry out first order calendering in first calender, the roller temperature of first calender is 100 ℃-120 ℃, obtains the diaphragm parison after the calendering;
6. the diaphragm parison is imported in first heat tunnel and heat; Temperature in first heat tunnel is 90 ℃-120 ℃; Be introduced into through the diaphragm parison of first heat tunnel and carry out second level calendering in second calender; When rolled the second level, the speed of the second calender roll was 4 times of the first calender speed of rolls, is stretched when making the diaphragm parison through first heat tunnel;
7. the diaphragm parison that 6. rolls after the stretching through step imports heating in second heat tunnel; The temperature of second heat tunnel is 120 ℃-140 ℃; Import through the diaphragm parison behind second heat tunnel and to carry out third level calendering in the 3rd calender; The 3rd calender roller temperature is 90 ℃-130 ℃, and the speed of the 3rd calender roll is 2-3 times of the second calender speed of rolls;
8. import the 3rd heat tunnel through the diaphragm parison after the third level calendering; Temperature in the 3rd heat tunnel is 120-140 ℃; Diaphragm parison after being heated imports in the 4th calender and rolls; The 4th calender roller temperature is 90-130 ℃, and the speed of the 4th calender roll is 2 times of the 3rd calender speed of rolls, is drawn into the diaphragm finished product through heating of the 3rd heat tunnel and the diaphragm parison after the calendering of the 4th calender;
9. the diaphragm finished product gets into typing back rolling in the forming machine at last;
The structure of first heat tunnel described in the above-mentioned steps, second heat tunnel and the 3rd heat tunnel is all identical; Concrete structure is: heat tunnel upper and lower, left and right wall is interconnected to housing (21); The centre is provided with cavity, and walking ultra-high molecular weight polyethylene section bar (14) in cavity middle part is provided with heat-insulation layer (25) in the housing (21); Heat-insulation layer (25) is connected with reflecting layer (26); Reflecting layer (26) is gone up heater (22) is installed, and ultra-high molecular weight polyethylene section bar (14) upper and lower surface is provided with the first heat scatternet (23) and the second heat scatternet (24) respectively, and the first heat scatternet (23) is connected with reflecting layer (26) sidewall respectively with the second heat scatternet (24); Offer port on the front and rear wall of heat tunnel respectively, the diaphragm parison is passed through.
2. ultra high molecular weight polyethylene films sheet hot-stretch processing method according to claim 1, it is characterized in that: the length of first heat tunnel is 0.95-1.05 rice.
3. ultra high molecular weight polyethylene films sheet hot-stretch processing method according to claim 1, it is characterized in that: the length of the length of second heat tunnel and the 3rd heat tunnel is 0.45-0.55 rice.
4. ultra high molecular weight polyethylene films sheet hot-stretch processing method according to claim 1; It is characterized in that: be provided with herringbone guide plate (18) in the mould of the wedge shape mould described in the step 4; The height of herringbone guide plate (18) by the peak of porch to the exit gradually step-down to become same plane with the exit; Herringbone guide plate (18) has constituted the first fractal groove (19) and the second fractal groove (20) respectively with two sidewalls of mould; Cover plate (27) is placed at the top of mould, and cover plate (27) is provided with spacing with herringbone guide plate (18) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010506628 CN102009472B (en) | 2010-10-14 | 2010-10-14 | Thermal stretch processing method of ultra-high molecular weight polyethylene diaphragm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010506628 CN102009472B (en) | 2010-10-14 | 2010-10-14 | Thermal stretch processing method of ultra-high molecular weight polyethylene diaphragm |
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| CN102009472A CN102009472A (en) | 2011-04-13 |
| CN102009472B true CN102009472B (en) | 2012-12-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102320137B (en) * | 2011-08-04 | 2014-04-16 | 山东和谐管业有限公司 | Preparation device of ultra-high molecular weight polyethylene sheets and preparation method thereof |
| CN103009620B (en) * | 2011-09-20 | 2017-11-24 | 上海华义化工科技有限公司 | The heating means and heater of tubular film blank tube |
| CN102658654A (en) * | 2012-05-26 | 2012-09-12 | 江苏联冠高新技术有限公司 | Manufacture method of ultra-high molecular weight polyethylene plate |
| CN103072260A (en) * | 2012-12-28 | 2013-05-01 | 青岛中科昊泰创新技术研究院有限公司 | Device for producing plates by ultrahigh molecular weight polyethylene pipes |
| CN103217445B (en) * | 2013-04-08 | 2015-06-17 | 中国科学技术大学 | Extruding and drawing device for in-situ structure detection in combination with scattering of X rays and experimental method thereof |
| CN112571708A (en) * | 2020-11-17 | 2021-03-30 | 中国电子科技集团公司第四十六研究所 | Calendering method of ultrathin polytetrafluoroethylene substrate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101293982A (en) * | 2008-06-20 | 2008-10-29 | 河南康喜科技有限公司 | High-density polyethylene geomembrane and preparing technique thereof |
| CN101301789A (en) * | 2007-05-11 | 2008-11-12 | 陈鸣 | Method for producing special polyethylene film capable of bonding with metal and non-metal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301789A (en) * | 2007-05-11 | 2008-11-12 | 陈鸣 | Method for producing special polyethylene film capable of bonding with metal and non-metal |
| CN101293982A (en) * | 2008-06-20 | 2008-10-29 | 河南康喜科技有限公司 | High-density polyethylene geomembrane and preparing technique thereof |
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