CN102490336B - Method and device of improving application effect of ultrasound in polymer extrusion - Google Patents
Method and device of improving application effect of ultrasound in polymer extrusion Download PDFInfo
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- CN102490336B CN102490336B CN201110392417.3A CN201110392417A CN102490336B CN 102490336 B CN102490336 B CN 102490336B CN 201110392417 A CN201110392417 A CN 201110392417A CN 102490336 B CN102490336 B CN 102490336B
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Abstract
The invention discloses a method and device of improving the application effect of ultrasound in polymer extrusion. In the method, a rare-earth giant magnetostrictive ultrasonic transducer made of a rare-earth giant magnetostrictive material is adopted as an ultrasonic generation source, so that the rare-earth giant magnetostrictive ultrasonic transducer is contacted with a polymer melt through a titanium alloy amplitude transformer, thus ultrasonic vibration is directly conducted to the polymer melt so as to increase the acting strength and reaction degree of ultrasound to reaction extrusion of the polymer melt. According to the method and the device, the rare-earth giant magnetostrictive material is adopted to manufacture the rare-earth giant magnetostrictive ultrasonic transducer, the rare-earth giant magnetostrictive ultrasonic transducer has the advantages of high power and good heat resistance, and can conduct the ultrasonic vibration to the polymer melt by the titanium alloy amplitude transformer which is directly contacted with the polymer melt, so that the application effect of ultrasound in polymer extrusion is greatly improved, the ultrasound has the advantages of more acting strength and higher reaction degree in reaction extrusion of the polymer melt.
Description
Technical field
The present invention relates to a kind of polymer processing method and device, especially a kind of method and device improving ultrasonic effect in polymer-extruded.
Background technology
At present, over nearly 20 years, research both domestic and external shows by applications of ultrasound in polymer melt extrusion process, can improve polymer melt and extrude processing characteristics; Promote that polymer reacts in melt extrusion process; The ultrasonic compatibility that can improve polymer/polymer blend improves the blended mechanical property of polymer/polymer simultaneously; Ultrasonication can improve the dispersiveness of inorganic filler in polymeric matrix and reduce the phase morphology size of inorganic filler, improves the mechanical property of polymer/inorganic filler blends simultaneously.
But what its ultrasonic device of polymeric ultrasonic extrusion device of current domestic and international invention adopted is piezoelectric ultrasonic transducer, and the actuating material that piezoelectricity surpasses transducer is piezoelectric ceramics.Piezoelectric ultrasonic transducer can not provide the power that single transducer is enough large, and the power ultrasonic transducer power of the continuous operation that conventional piezoelectric pottery manufactures is no more than 2 kW, and the environment temperature of piezoelectric ceramic transducer Long-Time Service is not higher than 150 DEG C.Polymer melt extrusion melt temperature is usually more than 150 DEG C, too high temperature can make piezoelectric ceramics piezo-electric effect reduce, the piezo-electric effect of Long-Time Service piezoelectric ceramics can lose efficacy and can not reply, cause ultrasonic power and frequency instability, therefore by the transducer application of piezoelectric ceramics in polymer-extruded process, continual and steady ultrasonic when can not produce long, make the properties of product of producing unstable.Be limited to the low and poor stability of power that piezoelectric ultrasonic transducer produces, simultaneously by the impact installing Vltrasonic device mode additional, the ultrasound polymerization thing extrusion device outside Present Domestic is still in laboratory stage, suitability for industrialized production stable when can't realize long; When suitability for industrialized production at a high speed in high speed extrusion situation, ultrasonic validity is poor, therefore, does not also have the polymeric ultrasonic extrusion device that can meet industrial production demand so far.At present, polymeric ultrasonic extrusion device both domestic and external can only carry out polymer melt extruding pelletization at a slow speed, and yield in unit time is limited, can't realize extruding of polymer melt extruding pelletization and sheet material, profile shapes and tubing etc. fast.Old-fashioned magnetostriction ultrasonic transducer, conversion ratio low energy consumption is high, is not suitable for the ultrasonic extrusion for polymer.
Summary of the invention
The object of the invention is: a kind of method and the device that improve ultrasonic effect in polymer-extruded are provided, steady and continuous ultrasonic extrusion processing when it can realize polymer and blend polymer long, and energy consumption is low, effect is good, suitability for industrialized production fast can be realized, to overcome the deficiencies in the prior art.
The present invention is achieved in that the method improving ultrasonic effect in polymer-extruded, adopt the rareearth super magnetostrictive ultrasonic transducer of rare earth ultra-magnetostriction material making as ultrasonic occurring source, make rareearth super magnetostrictive ultrasonic transducer by titanium alloy ultrasonic transformer and polymeric melt contacts, thus directly ultrasonic vibration is conducted in polymer melt, ultrasonic to action intensity during polymer melt reactive extrursion and the extent of reaction to increase.
Improve the device of ultrasonic effect in polymer-extruded, comprise double screw extruder, rareearth super magnetostrictive ultrasonic transducer is provided with above the die orifice of double screw extruder, rareearth super magnetostrictive ultrasonic transducer is connected with power supply, is connected with titanium alloy ultrasonic transformer in the bottom of rareearth super magnetostrictive ultrasonic transducer; The die orifice of double screw extruder is connected with multifunctional combination die head, the top of multifunctional combination die head is provided with the cavity that makes mold cavity and ft connection, titanium alloy ultrasonic transformer is in cavity, between titanium alloy ultrasonic transformer and the top of cavity, be provided with high heat-resistant silicon rubber pad, in polymer melt extrusion, melt is close to the flowing of titanium alloy ultrasonic transformer lower surface.
Ultrasonic transducer fixture is provided with in the bottom of rareearth super magnetostrictive ultrasonic transducer.Ensure the stability of rareearth super magnetostrictive ultrasonic transducer in polymer-extruded process.
The coupling part of rareearth super magnetostrictive ultrasonic transducer and titanium alloy ultrasonic transformer is provided with ultrasonic amplitude transformer positioner.Ensure the stability of titanium alloy ultrasonic transformer in polymer-extruded process, be conducive to improving processing effect.
Cooling die cavity is provided with in the outside of rareearth super magnetostrictive ultrasonic transducer, and be provided with on rareearth super magnetostrictive ultrasonic transducer and cool the circulating cooling oil-in and circulating cooling oil export that die cavity is communicated with, separately be provided with a low-temperature circulating cooling device, circulating cooling oil-in and circulating cooling oil export are all connected with low-temperature circulating cooling device.Adopt low-temperature circulating cooling device can reduce rareearth super magnetostrictive ultrasonic transducer temperature in use, improve the long-time stability used.
Adopt the rareearth super magnetostrictive ultrasonic transducer that rare earth ultra-magnetostriction material manufactures, its power can reach 6 ~ 25KW, suitable manufacture large-sized ultrasonic amplitude transformer, environment for use temperature can up to 380 DEG C, also can continuous operation more than 10 hours in the working environment more than 300 DEG C.Therefore the ultrasonic device manufacture polymeric ultrasonic preferably of rare earth ultra-magnetostriction material manufacture is adopted to extrude process unit.
In order to verify effect of the present invention, carry out following Experimental comparison:
1, adopt identical extruder, extruder rotating speed is 150 revs/min, when extrusion temperature is 200 DEG C, adds organic peroxide catalyst, and commonsense method extrudes ABS fusion-grafting GMA, and percent grafting is up to 0.4%; Under this rareearth super magnetostrictive ultrasonic device ultrasonication, percent grafting can be brought up to 2.0%.
2, adopt identical extruder, extruder rotating speed is 150 revs/min, and when extrusion temperature is 230 DEG C, the product notch impact strength that commonsense method extrudes PA6/ABS/GMA acquisition is 23KJ/m
2, under this rareearth super magnetostrictive ultrasonic device ultrasonication, impact strength can be increased to 57KJ/m
2.
3, adopt identical extruder, extruder rotating speed is 150 revs/min, and when extrusion temperature is 250 DEG C, commonsense method extrudes PBT/2% nano-calcium carbonate, and the product hot strength of acquisition is 47MPa, and impact strength is 45KJ/m
2; Under this rareearth super magnetostrictive ultrasonic device ultrasonication, hot strength and impact strength can be increased to 56MPa and 67KJ/m respectively
2.
Can find out according to contrast experiment, adopt method of the present invention, can when high-speed production, still can significantly improve the polymer melting extent of reaction, improve the compatibility of polymer/polymer system, polymer/inorganic filler systems, compared with the product obtained with usual manner, the physical property that method according to the present invention extrudes the product obtained has and obviously promotes.
Owing to have employed technique scheme, compared with prior art, the present invention adopts rare earth ultra-magnetostriction material to make rareearth super magnetostrictive ultrasonic transducer, the power of rareearth super magnetostrictive ultrasonic transducer is large, and heat resistance is good, rareearth super magnetostrictive ultrasonic transducer by directly and the titanium alloy ultrasonic transformer of polymeric melt contacts ultrasonic vibration is conducted in polymer melt, greatly improve ultrasonic effect in polymer-extruded.Because the power of rareearth super magnetostrictive ultrasonic transducer is large, and the ultrasonic effect to polymer and blend polymer that powerful ultrasonic transducer produces is more remarkable, is more conducive to the stable raising of blend polymer mechanical property; And due to more large-area titanium alloy ultrasonic transformer directly with polymeric melt contacts and time of contact longer, therefore when polymer melt reactive extrursion, more greatly, the extent of reaction is higher for action intensity; Even if when suitability for industrialized production when high speed extrusion, the ultrasonic raising to blend polymer mechanical property still clearly, because the heat resistance of rareearth super magnetostrictive ultrasonic transducer is good, even if therefore in long Continuous Extrusion Process, also continual and steady generation can be produced ultrasonic, ensure that the properties of product extruded are stablized, polymeric ultrasonic extrusion high-performance sheet material, profile shapes and tubing etc. can be realized.Method of the present invention is simple, easily implements, and the apparatus structure adopted is simple, and easy to make, with low cost, result of use is good.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is the upward view of rareearth super magnetostrictive ultrasonic transducer of the present invention.
Detailed description of the invention
Embodiments of the invention: the method improving ultrasonic effect in polymer-extruded, adopt the rareearth super magnetostrictive ultrasonic transducer of rare earth ultra-magnetostriction material making as ultrasonic occurring source, make rareearth super magnetostrictive ultrasonic transducer by titanium alloy ultrasonic transformer and polymeric melt contacts, thus directly ultrasonic vibration is conducted in polymer melt, ultrasonic to action intensity during polymer melt reactive extrursion and the extent of reaction to increase.
Improve the structure of the device of ultrasonic effect in polymer-extruded as shown in Figure 1, comprise double screw extruder 1, rareearth super magnetostrictive ultrasonic transducer 3 is provided with above the die orifice of double screw extruder 1, rareearth super magnetostrictive ultrasonic transducer 3 is connected with power supply 2, titanium alloy ultrasonic transformer 4 is connected with in the bottom of rareearth super magnetostrictive ultrasonic transducer 3, rareearth super magnetostrictive ultrasonic transducer 3 with the coupling part of titanium alloy ultrasonic transformer 4 are provided with ultrasonic amplitude transformer positioner 12, ultrasonic transducer fixture 11 is provided with in the bottom of rareearth super magnetostrictive ultrasonic transducer 3, the die orifice of double screw extruder 1 is connected with multifunctional combination die head 6, the top of multifunctional combination die head 6 is provided with the cavity 9 that makes mold cavity and ft connection, titanium alloy ultrasonic transformer 4 is in cavity 9, is provided with high heat-resistant silicon rubber pad 10 between titanium alloy ultrasonic transformer 4 and the top of cavity 9, in addition, rareearth super magnetostrictive ultrasonic transducer 3 is provided with periphery die cavity, and on rareearth super magnetostrictive ultrasonic transducer 3, be provided with the circulating cooling oil-in 7 and circulating cooling oil export 8 that are communicated with peripheral type, adopting a set of take conduction oil as medium low-temperature circulating cooling device 5, circulating cooling oil-in 7 and circulating cooling oil export 8 are all connected (in use with low-temperature circulating cooling device 5, the circulation cooling oil of low-temperature circulating cooling system 5 flows into the periphery die cavity of rareearth super magnetostrictive ultrasonic transducer 3 from entrance 7, the periphery die cavity flowing out rareearth super magnetostrictive ultrasonic transducer 3 from outlet 8 is got back to low-temperature circulating cooling device 5).
Claims (5)
1. one kind is improved the method for ultrasonic effect in polymer-extruded, it is characterized in that: adopt the rareearth super magnetostrictive ultrasonic transducer of rare earth ultra-magnetostriction material making as ultrasonic occurring source, make rareearth super magnetostrictive ultrasonic transducer by titanium alloy ultrasonic transformer and polymeric melt contacts, thus directly ultrasonic vibration is conducted in polymer melt, ultrasonic to action intensity during polymer melt reactive extrursion and the extent of reaction to increase.
2. one kind is improved the device of ultrasonic effect in polymer-extruded, comprise double screw extruder (1), it is characterized in that: above the die orifice of double screw extruder (1), be provided with rareearth super magnetostrictive ultrasonic transducer (3), rareearth super magnetostrictive ultrasonic transducer (3) is connected with power supply (2), is connected with titanium alloy ultrasonic transformer (4) in the bottom of rareearth super magnetostrictive ultrasonic transducer (3); The die orifice of double screw extruder (1) is connected with multifunctional combination die head (6), the top of multifunctional combination die head (6) is provided with the cavity (9) that makes mold cavity and ft connection, titanium alloy ultrasonic transformer (4) is in cavity (9), is provided with high heat-resistant silicon rubber pad (10) between titanium alloy ultrasonic transformer (4) and the top of cavity (9).
3. the device of the ultrasonic effect in polymer-extruded of raising according to claim 2, is characterized in that: be provided with ultrasonic transducer fixture (11) in the bottom of rareearth super magnetostrictive ultrasonic transducer (3).
4. the device of the ultrasonic effect in polymer-extruded of raising according to claim 2, is characterized in that: on the coupling part of rareearth super magnetostrictive ultrasonic transducer (3) with titanium alloy ultrasonic transformer (4), be provided with ultrasonic amplitude transformer positioner (12).
5. the device of the ultrasonic effect in polymer-extruded of raising according to claim 2, it is characterized in that: be provided with cooling die cavity in the outside of rareearth super magnetostrictive ultrasonic transducer (3), and be provided with on rareearth super magnetostrictive ultrasonic transducer (3) and cool the circulating cooling oil-in (7) and circulating cooling oil export (8) that die cavity is communicated with, separately be provided with a low-temperature circulating cooling device (5), circulating cooling oil-in (7) and circulating cooling oil export (8) are all connected with low-temperature circulating cooling device (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110392417.3A CN102490336B (en) | 2011-11-11 | 2011-12-01 | Method and device of improving application effect of ultrasound in polymer extrusion |
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| CN201110355497.5 | 2011-11-11 | ||
| CN201110355497 | 2011-11-11 | ||
| CN201110392417.3A CN102490336B (en) | 2011-11-11 | 2011-12-01 | Method and device of improving application effect of ultrasound in polymer extrusion |
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| CN102490336A CN102490336A (en) | 2012-06-13 |
| CN102490336B true CN102490336B (en) | 2015-01-28 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102794896B (en) * | 2012-09-04 | 2015-10-07 | 贵州省复合改性聚合物材料工程技术研究中心 | The method that polymer ultrasonic melt tandem is extruded and device |
| CN104190608B (en) * | 2014-07-21 | 2016-05-04 | 上海交通大学 | A kind of oil cooling ultrasonic transducer amplitude modulator combined piece |
| CN105014925A (en) * | 2015-07-27 | 2015-11-04 | 广东工业大学 | Device and method for manufacturing metal flashing plastic through ultrasonic treatment |
| ES2694599A1 (en) * | 2017-06-21 | 2018-12-21 | Luis Saracho Rotaeche | VIBRATORY EXTRUSOR AND VIBRATORY EXTRUSION PROCEDURE FOR 3D PRINTER (Machine-translation by Google Translate, not legally binding) |
| GB201819346D0 (en) | 2018-11-28 | 2019-01-09 | Matrix Moulding Systems Ltd | Improvements in ultrasonic injection moulding |
| CN112175712A (en) * | 2019-07-03 | 2021-01-05 | 上海谷励智能设备有限公司 | Ultrasonic wall-breaking screw device for vegetable oil |
| CN110561647B (en) * | 2019-09-12 | 2020-06-12 | 四川大学 | Disentanglement device for combining polymer ultrasonic vibration and disc shearing |
| CN110804243A (en) * | 2019-11-25 | 2020-02-18 | 南通复源新材料科技有限公司 | High-rigidity and high-heat-resistance carbon fiber reinforced PP material and preparation method thereof |
| CN111672701B (en) * | 2020-05-26 | 2022-02-11 | 厦门鑫奥格自动化设备有限公司 | Extrusion type dispensing needle |
| CN114274518A (en) * | 2021-12-17 | 2022-04-05 | 海鹰企业集团有限责任公司 | Ultrasonic welding probe using magnetostrictive material as driving source |
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| WO2003074254A1 (en) * | 2002-02-28 | 2003-09-12 | Scimed Life Systems, Inc. | Ultrasonic assisted apparatus and process |
| GB0221263D0 (en) * | 2002-09-13 | 2002-10-23 | Dki Plast A S | Apparatus and method for improving the flow characteristics of a material to be injection moulded or extruded |
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Patent Citations (4)
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| CN1155301A (en) * | 1994-06-23 | 1997-07-23 | 金伯利-克拉克公司 | Method and apparatus for increasing the flow rate of liquid through orifice |
| CN101005717A (en) * | 2006-12-19 | 2007-07-25 | 刘铮 | Circular center focusing high power supersonic transducer |
| CN101947846A (en) * | 2010-09-16 | 2011-01-19 | 大连理工大学 | Ultrasonic vibration microtube extrusion mould |
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