CN108544760B - Polyetheretherketone ultrasonic welding technology - Google Patents
Polyetheretherketone ultrasonic welding technology Download PDFInfo
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- CN108544760B CN108544760B CN201810343249.0A CN201810343249A CN108544760B CN 108544760 B CN108544760 B CN 108544760B CN 201810343249 A CN201810343249 A CN 201810343249A CN 108544760 B CN108544760 B CN 108544760B
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- welded
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- polyetheretherketone
- polyether
- welding
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- 238000003466 welding Methods 0.000 title claims abstract description 76
- 239000004696 Poly ether ether ketone Substances 0.000 title claims abstract description 75
- 229920002530 polyetherether ketone Polymers 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 10
- 238000012797 qualification Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920005630 polypropylene random copolymer Polymers 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007526 fusion splicing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
本发明公开了聚醚醚酮超声波焊接工艺方法，其特征在于，包括以下步骤：选用带有导能筋的聚醚醚酮待焊接件；将带有导能筋的聚醚醚酮待焊接件放入循环加热箱内进行预热处理；预热后的聚醚醚酮待焊接件进行压紧；利用超声波对压紧后的聚醚醚酮待焊接件焊口进行持续超声处理焊接；超声处理完成后，撤除超声波，冷却至常温，恢复至常压状态。本发明提供的聚醚醚酮超声波焊接工艺方法，避免传统热熔接过程中的焊材变形的问题，在外表美观方面得到了很大改善，在焊接处外表面基本看不到焊接痕迹；其工艺步骤简单、操作简便，具有实用性广、提高产品合格率、极大地提高产品焊接强度等优点。The invention discloses a polyetheretherketone ultrasonic welding process, which is characterized by comprising the following steps: selecting polyetheretherketone parts to be welded with energy-conducting ribs; Put it into a circulating heating box for preheating treatment; the preheated polyetheretherketone to be welded is pressed; the welded joint of the pressed polyetheretherketone to be welded is continuously ultrasonicated and welded by ultrasonic wave; ultrasonic treatment After completion, the ultrasonic wave was removed, cooled to normal temperature, and returned to normal pressure. The polyether ether ketone ultrasonic welding process method provided by the invention avoids the problem of welding material deformation in the traditional hot welding process, and greatly improves the appearance in terms of aesthetics, and basically no welding traces can be seen on the outer surface of the welding place; The steps are simple, the operation is simple, and it has the advantages of wide practicability, improved product qualification rate, and greatly improved product welding strength.
Description
Technical Field
The invention belongs to the field of special engineering plastic processing, and relates to a polyether-ether-ketone ultrasonic welding process method.
Background
Polyetheretherketone is a high-performance semi-crystalline thermoplastic material that was marketed by empire chemical in 1978. The polyether-ether-ketone has good specific strength and specific rigidity, and better toughness, impact resistance, dimensional stability, fatigue resistance and friction resistance; the melting point of the polyether-ether-ketone is 334 ℃, the load application temperature is 310 ℃, the continuous use temperature is 260 ℃, the decomposition temperature is 550 ℃, and the polyether-ether-ketone has excellent thermal stability; the flame retardance of a test sample of 1.45mm can reach the UL94V-0 level without adding any flame retardant, and the test sample has very little delayed release; the polyether-ether-ketone can be used as a C-grade insulating material, and the change of the insulating property along with the changes of temperature, pressure, current and humidity is very small; the polyether-ether-ketone is only dissolved in concentrated sulfuric acid, so that the chemical stability is very good; meanwhile, the composite material has good hydrolysis resistance and can be stably used for a long time in a high-temperature water vapor environment. The polyether-ether-ketone has great application potential and commercial value, and besides the excellent performance, the polyether-ether-ketone is used as a thermoplastic material, the molecular chain of the polyether-ether-ketone is in a linear structure, and the polyether-ether-ketone can be processed and spliced according to actual needs after being heated and melted, and can be combined into a more complex part by firstly manufacturing a simpler part and then welding, so that departments are fully utilized to cooperate, the production efficiency is improved, and the manufacturing cost is reduced.
In the prior art, the splicing modes of the existing thermoplastic materials mainly include fusion splicing, mechanical splicing, adhesive splicing and the like. The splicing method has certain defects in the splicing of the polyether-ether-ketone. For example: the relatively common PPR (polypropylene random copolymer) adopts a melt splicing mode, but the melt temperature of the polyether-ether-ketone is too high, meanwhile, the interface strength cannot be effectively ensured due to the semi-crystalline performance of the polyether-ether-ketone, and meanwhile, the interface strength is far lower than the strength of the material, so that the PPR is not suitable for use; the mechanical splicing mode is necessary to punch holes on the polyetheretherketone material, so that the strength of the material is weakened; because the corrosion resistance of the polyetheretherketone is excellent, an adhesive capable of effectively dissolving the polyetheretherketone cannot be found at the present stage. Under the condition, the research and development of the ultrasonic welding process suitable for the polyether-ether-ketone has very critical significance.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the polyetheretherketone ultrasonic welding process method is characterized by comprising the following steps:
1) selecting a polyether-ether-ketone part to be welded with energy-guiding ribs;
2) preheating treatment: placing the polyether-ether-ketone to-be-welded part with the energy guiding ribs into a circulating heating box for preheating treatment;
3) compacting the polyether-ether-ketone to-be-welded part preheated in the step 2);
4) ultrasonic welding: carrying out continuous ultrasonic treatment welding on the craters of the to-be-welded polyetheretherketone parts in the pressing state in the step 3) by using ultrasonic waves;
5) and 4) after the ultrasonic treatment is finished, removing the ultrasonic wave, cooling to normal temperature, and recovering to a normal pressure state.
Preferably, in step 1), the energy guiding ribs on the surface of the to-be-welded piece of polyetheretherketone adopt equilateral triangles with the vertex angle of 60 degrees and the height of 0.7 mm.
Preferably, in step 1), the preheating treatment preheats the polyetheretherketone weldment to 280 ℃.
Preferably, in the step 3), 300N continuous pressure is applied to the welding surface of the piece to be welded of the polyetheretherketone.
Preferably, in the step 4), the ultrasonic welding is to weld the craters of the polyetheretherketone parts to be welded after being pressed in the step 2) by using ultrasonic waves with the amplitude of 32 μm.
Preferably, the welding time of the ultrasonic welding is 2-5 s.
Preferably, an auxiliary agent is added in the welding process, and the auxiliary agent is aluminum oxide.
The application of the ultrasonic welding process method for the polyether-ether-ketone is characterized in that the ultrasonic welding process method for the polyether-ether-ketone is suitable for the polyether-ether-ketone and composite materials thereof, and comprises polyether-ether-ketone-based modified materials such as carbon fiber reinforcement and glass fiber reinforcement.
The invention at least comprises the following beneficial effects: the ultrasonic welding process method of the polyether-ether-ketone avoids the problem of deformation of welding materials in the traditional hot welding process, improves the product percent of pass, and greatly improves the welding strength; the appearance is greatly improved in the aspect of appearance, and welding marks can not be basically seen on the outer surface of a welding position; the investment of the previous welding rod and welding flux is replaced, and the welding cost is greatly reduced; the welding process is suitable for polyether-ether-ketone and composite materials thereof, including carbon fiber reinforced, glass fiber reinforced, wear-resistant series and the like.
Detailed Description
The present invention is described in further detail below to enable those skilled in the art to practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1:
in this embodiment, the ultrasonic welding process of polyetheretherketone includes the following steps:
1) selecting a polyether-ether-ketone part to be welded with energy-guiding ribs;
2) preheating treatment: placing the polyether-ether-ketone to-be-welded part with the energy guiding ribs into a circulating heating box for preheating treatment;
3) compacting the polyether-ether-ketone to-be-welded part preheated in the step 2);
4) ultrasonic welding: carrying out continuous ultrasonic treatment welding on the craters of the to-be-welded polyetheretherketone parts in the compression state in the step 3) by using ultrasonic waves with the amplitude of 30 micrometers;
5) and 4) after the ultrasonic treatment is finished, removing the ultrasonic wave, cooling to normal temperature, and recovering to a normal pressure state.
Preferably, in step 1), the energy guiding ribs on the surface of the to-be-welded piece of polyetheretherketone adopt equilateral triangles with the vertex angle of 60 degrees and the height of 0.7 mm. The energy guiding rib is an equilateral triangle with the apex angle of 60 degrees and the height of 0.7mm, so that energy waves are uniformly transmitted, and the welding quality is ensured.
Preferably, in step 1), the preheating treatment preheats the polyetheretherketone weldment to 280 ℃. The temperature is preheated to 280 ℃, the to-be-welded polyether-ether-ketone part is in a viscoelastic state, and internal molecules are active, so that the welding is facilitated, and the welding strength is improved.
Preferably, in the step 3), 300N continuous pressure is applied to the welding surface of the polyetheretherketone welding piece. The two melted and softened materials are kept with certain force, and under the action of 300N external force, the welding of the joint surfaces is firmer, and the contact area is larger; an external force exceeding 300N may cause deformation of the adhesive material, and a strong connection cannot be achieved with a force less than 300N.
Preferably, the welding time of the ultrasonic welding is 2-5 s.
Preferably, an auxiliary agent is added in the welding process, and the auxiliary agent is aluminum oxide. The aluminum oxide has the function of limiting the flow, so that the contact surface is more smooth, and the welding success rate is improved.
Example 2:
in this embodiment, the ultrasonic welding process of polyetheretherketone includes the following steps:
1) selecting a polyether-ether-ketone part to be welded with energy-guiding ribs;
2) preheating treatment: placing the polyether-ether-ketone to-be-welded part with the energy guiding ribs into a circulating heating box for preheating treatment;
3) compacting the polyether-ether-ketone to-be-welded part preheated in the step 2);
4) ultrasonic welding: carrying out continuous ultrasonic treatment welding on the craters of the to-be-welded polyetheretherketone parts in the pressing state in the step 3) by using ultrasonic waves;
5) and 4) after the ultrasonic treatment is finished, removing the ultrasonic wave, cooling to normal temperature, and recovering to a normal pressure state.
Preferably, in step 1), the energy guiding ribs on the surface of the to-be-welded piece of polyetheretherketone adopt equilateral triangles with the vertex angle of 60 degrees and the height of 0.7 mm.
Preferably, in step 1), the preheating treatment preheats the polyetheretherketone weldment to 280 ℃.
Preferably, in the step 3), 300N continuous pressure is applied to the welding surface of the polyetheretherketone welding piece.
Preferably, in the step 4), the ultrasonic welding is to weld the craters of the parts to be welded of the polyetheretherketone, which are compacted in the step 2), by using ultrasonic waves with the amplitude of 32 μm.
Preferably, the welding time of the ultrasonic welding is 2-5 s.
Preferably, an auxiliary agent is added in the welding process, and the auxiliary agent is aluminum oxide. The aluminum oxide has the function of limiting the flow, so that the contact surface is more smooth, and the welding success rate is improved.
In the embodiment, the energy guiding rib is an equilateral triangle with the apex angle of 60 degrees and the height of 0.7mm, so that energy waves are uniformly transmitted, and the welding quality is ensured; preheating the temperature to 280 ℃, wherein the polyether-ether-ketone part to be welded is in a viscoelastic state, so that internal molecules are more actively moved, the welding is convenient, and the welding strength is improved; the two melted and softened materials are kept with certain force, and under the action of 300N external force, the welding of the joint surfaces is firmer, and the contact area is larger; an external force exceeding 300N may cause deformation of the bonding material, and a firm connection effect cannot be achieved when the external force is less than 300N; the ultrasonic wave with the amplitude of 32 mu m has the best activation performance on the polyether-ether-ketone, and the ultrasonic welding effect and strength are ensured.
Through detection, the polyether-ether-ketone welded by the ultrasonic welding process method of polyether-ether-ketone in the embodiment 2 is greatly improved in appearance attractiveness, and welding marks cannot be basically seen on the outer surface of the welding position; and the product percent of pass and the welding strength are improved.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (5)
1. The polyetheretherketone ultrasonic welding process method is characterized by comprising the following steps:
1) selecting a polyether-ether-ketone part to be welded with energy-guiding ribs;
2) preheating treatment: placing the polyether-ether-ketone to-be-welded part with the energy guiding ribs into a circulating heating box for preheating treatment;
3) compacting the polyether-ether-ketone to-be-welded part preheated in the step 2);
4) ultrasonic welding: carrying out continuous ultrasonic treatment welding on the craters of the to-be-welded polyetheretherketone parts in the pressing state in the step 3) by using ultrasonic waves; an auxiliary agent is added in the welding process, and the auxiliary agent adopts aluminum oxide;
5) step 4), after the ultrasonic treatment is finished, removing the ultrasonic wave, cooling to normal temperature, and recovering to a normal pressure state;
the energy guiding ribs on the surface of the to-be-welded polyether-ether-ketone part adopt equilateral triangles with the apex angle of 60 degrees and the height of 0.7 mm.
2. The ultrasonic welding process of polyetheretherketone according to claim 1, wherein in step 1) the preheating treatment preheats the polyetheretherketone weldment to 280 ℃.
3. The ultrasonic welding process of PEEK according to claim 1, wherein in step 3), the welding surface of the PEEK workpiece to be welded is pressed with a continuous pressure of 300N.
4. The ultrasonic welding process of polyether-ether-ketone according to claim 1, wherein in step 4), the ultrasonic welding is performed by using ultrasonic waves with amplitude of 32 μm to weld craters of the parts to be welded of polyether-ether-ketone compacted in step 2).
5. The ultrasonic welding process of polyether ether ketone according to claim 4, wherein the welding time of ultrasonic welding is 2-5 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343249.0A CN108544760B (en) | 2018-04-17 | 2018-04-17 | Polyetheretherketone ultrasonic welding technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343249.0A CN108544760B (en) | 2018-04-17 | 2018-04-17 | Polyetheretherketone ultrasonic welding technology |
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| Publication Number | Publication Date |
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| CN108544760A CN108544760A (en) | 2018-09-18 |
| CN108544760B true CN108544760B (en) | 2021-04-16 |
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| CN111674049A (en) * | 2020-07-10 | 2020-09-18 | 埃维尔汽车部件(苏州)有限公司 | Ultrasonic welding treatment process for paint spraying panel and electroplating panel |
| CN114958210B (en) * | 2022-07-13 | 2023-11-21 | 沈阳航空航天大学 | An ultrasonic welding method for high temperature resistant polyimide/polyaryl ether ketone composite membrane |
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| CN100519153C (en) * | 2007-09-19 | 2009-07-29 | 哈尔滨工业大学 | Poly ether ether ketone plastic high compactness joint preheating ultrasonic welding device and method |
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