CN108356444B - UV (ultraviolet) die-pressing nickel plate seam welding strip and application and preparation method thereof - Google Patents
UV (ultraviolet) die-pressing nickel plate seam welding strip and application and preparation method thereof Download PDFInfo
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- CN108356444B CN108356444B CN201711483339.1A CN201711483339A CN108356444B CN 108356444 B CN108356444 B CN 108356444B CN 201711483339 A CN201711483339 A CN 201711483339A CN 108356444 B CN108356444 B CN 108356444B
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 48
- 238000003466 welding Methods 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 238000007723 die pressing method Methods 0.000 title description 5
- 229920005989 resin Polymers 0.000 claims abstract description 43
- 239000011347 resin Substances 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 35
- 229910001128 Sn alloy Inorganic materials 0.000 claims abstract description 24
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 23
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 23
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims abstract description 13
- 229920009441 perflouroethylene propylene Polymers 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 238000011049 filling Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 7
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 2
- 229910001152 Bi alloy Inorganic materials 0.000 claims description 2
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 claims description 2
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 claims description 2
- 229910000597 tin-copper alloy Inorganic materials 0.000 claims description 2
- 229910001174 tin-lead alloy Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 17
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 239000000126 substance Substances 0.000 abstract description 9
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 238000004023 plastic welding Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical compound FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000016 photochemical curing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005323 electroforming Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3612—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with organic compounds as principal constituents
- B23K35/3613—Polymers, e.g. resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention provides a UV mould pressing nickel plate seam welding rod and an application and a preparation method thereof, wherein the welding rod comprises the following components in parts by weight: 50-85 parts of fluorinated ethylene propylene resin; 10-50 parts of polyphenylene sulfide resin; 5-20 parts of tin or tin alloy. The preparation method of the welding rod comprises the following steps: s1, uniformly mixing the fluorinated ethylene propylene resin, the polyphenylene sulfide resin and the tin or tin alloy, and cold-pressing to prepare a blank, wherein the mould pressing pressure is 20-35 MPa; s2, freely sintering at the temperature of 360-380 ℃, and cooling and forming; and then the plate seam welding rod is obtained through mechanical processing. The seam welding rod is filled into the nickel plate seam by adopting a method of melting a welding rod by a plastic air gun. The invention has strong operability and reasonable structure, effectively fills gaps at the splicing position of the nickel plate, has good adhesion with the steel roller and the nickel plate, does not accumulate materials, is easy to demould, has good heat resistance and resists chemical corrosion.
Description
Technical Field
The invention belongs to the technical field of UV (ultraviolet) die pressing, relates to a UV die pressing nickel plate seam processing method, and particularly relates to a UV die pressing nickel plate seam welding strip and an application and preparation method thereof.
Background
At present, a mould pressing laser mother set used in the UV mould pressing process is a plane laser nickel plate formed by electroforming, and a plate seam is inevitably generated when the plane laser nickel plate is attached to a compression roller. Different from the traditional mould pressing process, in the UV mould pressing process, the liquid UV photocureable coating is easy to seep into a plate seam and be cured and formed under the action of pressure, and the stripping force is increased along with the gradual accumulation of production, even the damage and the fracture of a finished film are caused, so that the yield and the production efficiency are seriously influenced.
In order to solve the trouble caused by the plate seam problem, the technicians in the field propose various solutions, for example, in the invention patent of 'the manufacturing process of the seamless mould pressing plate roller and the seamless mould pressing plate roller obtained by the process', and the publication No. CN 201310427052.2, a layer of UV resin is uniformly coated on the surface of a steel roller, the laser pattern on the holographic film is copied to the wet UV coating, and then the UV curing molding is carried out to obtain the seamless mould pressing plate roller. Although seamless mold pressing rollers can be obtained theoretically by adopting the method, the problems of practical operation feasibility, uniformity, service life and the like restrict the popularization of the method. The utility model discloses a mention in "a UV mould pressing nickel version roller", utility model patent with publication No. CN 201520740188.3 with become the steel glue with fast and fill up the version seam, have advantages such as easy operation, shaping are fast, but it has high temperature resistant effect poor, deciduate peel strength is big and use solidification scheduling problem slowly under the low temperature condition.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a UV mould pressing nickel plate seam welding strip and an application and a preparation method thereof. The method has the advantages of strong operability, reasonable structure, effective filling of gaps at the splicing position of the nickel plate, good adhesion with the steel roller and the nickel plate, no material accumulation, easy demoulding, good heat resistance and chemical corrosion resistance.
The purpose of the invention is realized by the following technical scheme:
the invention provides a UV mould pressing nickel plate seam welding rod which comprises the following components in parts by weight:
50-85 parts of fluorinated ethylene propylene resin;
10-50 parts of polyphenylene sulfide resin;
5-20 parts of tin or tin alloy.
The content of the polyphenylene sulfide resin is too low, so that the polyphenylene sulfide resin risks falling off, but if the content of the polyphenylene sulfide is too high, the UV coating is adhered to a plate seam during demoulding, so that the content of the polyphenylene sulfide needs to be controlled. The tin or tin alloy which is uniformly dispersed in the plate seam welding rod can be prevented from being oxidized by adding a proper amount of tin or tin alloy to promote adhesion similar to the principle of soldering tin, and the adhesion enhancing effect can be realized on the contact part of the tin or tin alloy and the metal steel roller.
Preferably, the composition comprises the following components in parts by weight:
60-70 parts of fluorinated ethylene propylene resin;
20-30 parts of polyphenylene sulfide resin;
10-20 parts of tin or tin alloy.
Preferably, the polyperfluorinated ethylene propylene resin has a melt index of 20 to 30g/10 min. If the melt index is lower than 20g/10min, the fluidity is too low, which is not beneficial to filling the plate seam in the later period. If the melt index is higher than 30g/10min, the fluidity is high, but the molecular weight is small, and the mechanical properties are deteriorated.
Preferably, the fluorinated ethylene propylene resin is powder (resin micropowder), and the average particle size is 0.5-25 μm. The size of the particle size affects the mixing uniformity.
More preferably, the average particle diameter of the polyperfluorinated ethylene propylene resin powder is 10 μm.
Preferably, the polyphenylene sulfide resin is a branched-chain structure thermoplastic resin.
Preferably, the polyphenylene sulfide resin is powder, and the average particle size is 0.5-25 μm.
More preferably, the polyphenylene sulfide resin powder has an average particle diameter of 10 μm.
Preferably, the tin or tin alloy is powder, and the average grain diameter is 0.5-25 μm.
More preferably, the average particle diameter of the tin or tin alloy powder is 10 μm.
Preferably, the tin alloy is selected from one or more of tin-lead alloy, tin-copper alloy, tin-silver alloy and tin-bismuth alloy.
In a second aspect, the invention provides a preparation method of a UV mould pressing nickel plate seam welding rod, which comprises the following steps:
s1, uniformly mixing the fluorinated ethylene propylene resin, the polyphenylene sulfide resin and the tin or tin alloy, and cold-pressing to prepare a blank, wherein the mould pressing pressure is 20-35 MPa;
s2, freely sintering at the temperature of 360-380 ℃, and cooling and forming; and then the plate seam welding rod is obtained through mechanical processing.
In a third aspect, the invention provides an application of a UV molded nickel plate seam welding rod in filling plate seams.
Preferably, when the welding rod is applied to the seam, a plastic welding gun is adopted to melt the welding rod for the seam, the hot air temperature of the plastic welding gun is controlled at 290-300 ℃, the seam glue in a molten state is filled into the seam of the nickel plate, a scraper is used to apply external force to strike the seam, and the seam of the UV molded nickel plate with good filling performance is obtained through natural cooling forming.
The plate seam welding strip is applied to a mould pressing plate roller, the width of the plate roller is generally 1m-1.2m, the plate seam depth is the thickness of a nickel plate and generally does not exceed 100 mu m, and the smaller the plate seam gap, the better the plate seam gap is, the smaller the plate seam gap is, the plate seam gap is generally smaller than 1 cm; the size of the plate seam welding rod is matched with that of the plate seam. Preferably, the dimensions of the electrode are: 100mm long, 2mm wide and 1mm thick.
The basic principle of the invention is that: the UV mould pressing process is different from the traditional mould pressing process, the nickel plate seam needs special treatment, and the adverse effect of the photocureable coating penetrating into the plate seam on demoulding is avoided. The following requirements are made for the plate gap filler:
1) the material does not deform in the mould pressing process, and has good heat resistance, chemical corrosion resistance and ultraviolet resistance;
2) the adhesive is tightly and seamlessly adhered with the metal roller and the nickel plate, and has better adhesive force;
3) easy demoulding and small adhesive force with the solidified UV coating.
The polyfluorinated ethylene propylene resin is a copolymer of tetrafluoroethylene and hexafluoroethylene, and the complete fluorinated structure ensures that the polyfluorinated ethylene propylene has excellent thermal stability, outstanding chemical inertness and non-stickiness. The polyfluorinated ethylene propylene resin has the long-term use temperature of-90-200 ℃, is resistant to all solvents, acids and alkalis at normal temperature, has low surface energy and lubricating effect, and meets the requirements of plate seam fillers. In addition, the polyfluorinated ethylene propylene has a crystalline structure, is insensitive to molding conditions, particularly cooling speed, has good fluidity at processing temperature, and is easy to seep into a plate seam for filling.
The polyphenylene sulfide resin has higher mechanical strength, thermal stability and solvent resistance. In addition, lone pair electrons of S atoms in the polyphenylene sulfide resin are coordinated with metal atoms to form macromolecular complexes, and the macromolecular complexes have strong adhesive force with steel and nickel. The polyphenylene sulfide resin does not have self-lubricating property, the self-lubricating property is improved by adding the polyfluorinated ethylene, and meanwhile, the adhesion between the two resins and a steel roller and the demolding performance of the UV coating are balanced by adding a specific proportion.
Although the adhesion between the molten metal tin or tin alloy and the steel is general, the molten metal tin or tin alloy can wet the surface of the steel, and the molten metal tin or tin alloy can play a role of anchoring in the blend of the plate seam welding rod after being cooled, so that the mechanical adhesion is provided, and the adhesion between the plate seam welding rod and the steel roller is further improved; meanwhile, the molten metal tin or tin alloy has better adhesive force with nickel, the addition of the tin or tin alloy in the system plays a role in further enhancing the adhesive force between the plate seam welding rod and the nickel plate, and the metal tin is not stained with the UV coating. The polyperfluorinated ethylene propylene has multiple advantages, but the application is limited due to low compressive strength and poor adhesion with metal, and the compressive strength and the adhesion can be effectively improved due to the doping of the polyphenylene sulfide resin and tin or tin alloy. Moreover, by comparing the findings excluding toxic metals, noble metals and metals having too low a melting point, no other metals have been found to achieve the same effects as the present invention.
Compared with the prior art, the invention has the following beneficial effects:
1. easy demoulding, good adhesive force with metal, prolonged service life of the printing roller nickel plate and improved production efficiency.
2. Good heat resistance and can resist high temperature of 200 ℃.
3. The paint is resistant to chemical corrosion and has good use stability.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Examples 1 to 5
Examples 1-5 each provide a UV die-stamping nickel plate seam-welded bar composition, and the raw material components and parts by mass of each composition are shown in table 1.
The raw material compositions corresponding to the embodiments are respectively and uniformly mixed according to a certain weight proportion, and the mixture is pressed into strip-shaped blanks with the thickness of 2mm under the mould pressing pressure of 20-35MPa and the pressure maintaining of 30s at room temperature. Then heating the blank to 360-380 ℃ in air, and cooling to obtain the formed blend. And machining to obtain the plate seam welding rod with the length of 100mm, the width of 2mm and the thickness of 1 mm. And finally, placing the welding rod into the seam, melting the welding rod of the seam by using a plastic welding gun, controlling the hot air temperature of the plastic welding gun at 290-300 ℃, filling the seam glue in the molten state into the seam of the nickel plate, flattening by using a scraper to apply external force, and naturally cooling and forming to obtain the UV mould pressing nickel plate seam with good filling performance.
In examples 1 to 4, the melt index of the polyperfluorinated ethylene propylene resin was 20 to 30g/10 min;
the average particle size of the fluorinated ethylene propylene resin is 10 mu m;
the polyphenylene sulfide resin has an average particle diameter of 10 μm;
the average particle size of the tin or tin alloy powder was 10 μm.
Comparative example 1
The comparative example provides a UV mould pressing nickel plate seam welding rod, wherein the welding rod prepared by melting and extruding pure fluorinated ethylene propylene resin at 300 ℃ is placed into a plate seam, a plastic welding gun is used for melting the plate seam welding rod, the hot air temperature of the plastic welding gun is controlled at 290-300 ℃, plate seam glue in a molten state is filled into the nickel plate seam, a scraper is used for applying external force to strike the nickel plate seam, and the filled UV mould pressing nickel plate seam is obtained through natural cooling and forming.
Comparative example 2
The comparative example provides a UV mould pressing nickel plate seam welding rod, wherein the welding rod prepared by melting and extruding pure polyphenylene sulfide resin at 360 ℃ is placed in a plate seam, a plastic welding gun is used for melting the plate seam welding rod, the hot air temperature of the plastic welding gun is controlled to be 290-300 ℃, plate seam glue in a molten state is filled into the nickel plate seam, a scraper is used for applying external force to strickle the plate seam, and the filled UV mould pressing nickel plate seam is obtained through natural cooling and forming.
Comparative example 3
This comparative example provides a UV die stamping nickel plate seam welding rod, the method of manufacture is substantially the same as example 2, except that: no metallic Sn.
Comparative example 4
This comparative example provides a UV die stamping nickel plate seam welding rod, the method of manufacture is substantially the same as example 2, except that: metallic zinc is used instead of metallic Sn.
Comparative example 5
This comparative example provides a UV die stamping nickel plate seam welding rod, the method of manufacture is substantially the same as example 2, except that: the particle size of the metallic Sn powder is 50 μm.
Comparative example 6
This comparative example provides a UV die stamping nickel plate seam welding rod, the method of manufacture is substantially the same as example 2, except that: the melt index of the fluorinated ethylene propylene resin is 40g/10 min.
TABLE 1 Components and amounts for the examples and comparative examples
Performance detection
To compare the performance of the examples and comparative examples, the mechanical strength, release, adhesion, chemical resistance of the slot fillers were evaluated using the following test methods.
Compression modulus
The prismatic sample was prepared by cold-pressing sintering and the compression modulus was measured according to GB-T1041-. The evaluation method comprises the following steps: the compression modulus above 20MPa is preferred, and the compression modulus below 20MPa is poor.
Second, peel strength
The plate joint sealant composition in a molten state is bonded with two thin steel sheets, pressed, cooled and formed, and subjected to a peel strength test according to GB-T2791-1995. The evaluation method comprises the following steps: the peel strength is preferably higher than 5kN/m, and the peel strength is less than 5 kN/m.
Third, chemical resistance
And preparing a flaky sample by a cold pressing sintering method, soaking the flaky sample in the mixed type photocuring liquid coating with the constant temperature of 65 ℃ for 48 hours, taking out the flaky sample, wiping the flaky sample clean, and observing appearance change. The evaluation method comprises the following steps: the appearance of the sample is excellent without any abnormal appearance, and the appearance of the sample is poor in changes such as erosion, discoloration and the like.
Fourthly, demoulding performance
Preparing a sheet sample by a cold pressing sintering method, coating a mixed type photocuring coating on the surface of the sheet sample, covering a PC substrate, and then performing laser sintering at a temperature of 600mj/m2Cured under the conditions, and then peeled from the sample to evaluate the release property. The evaluation method comprises the following steps: the resistance feeling was excellent when the substrate and the sample were peeled off, and the resistance feeling was poor when the substrate and the sample were peeled off.
Table 2 test results of examples and comparative examples
As can be seen from Table 2, one UV molded nickel plate seam electrode produced in examples 1-4 compares to comparative examples 1-2: the plate seam welding rod prepared by the embodiment has excellent compression modulus, peeling strength and stripping performance, the advantages and the performances of different materials are complementary, and the application requirement of the UV mould pressing nickel plate seam welding rod is met. As can be seen from example 2 and comparative example 3, the adhesion of the plate-seam welding rod to the steel roll and the nickel plate was enhanced due to the addition of the metallic Sn component. It is understood from example 2 and comparative example 4 that when the Sn component is replaced with metallic Zn, adhesion enhancement is not performed due to the high melting point of Zn. As is clear from example 2 and comparative example 5, when the particle size of metallic Sn powder exceeds 25 μm, the mixture of the stitch welding rod is not uniformly mixed, and the aggregation point of tin or tin alloy appears at a part of the position, and the mechanical properties of the stitch welding rod are degraded. As is clear from example 2 and comparative example 6, when the melt index of the perfluoroethylene-propylene copolymer resin exceeds 30g/10min, the molecular weight of the perfluoroethylene-propylene copolymer resin decreases, the deformation resistance decreases, and the mechanical properties of the plate-seam welded steel strip decrease.
In conclusion, the UV mould pressing nickel plate seam welding rod and the application thereof have the advantages of strong operability, reasonable structure and capability of effectively filling the seam at the splicing position of the nickel plate. The polyfluorinated ethylene propylene resin can greatly improve the stripping property, the polyphenylene sulfide resin can improve the compression modulus and the adhesion with metal and provide chemical bonding force, the tin or tin alloy can play a role in fixing anchor and provide a mechanical embedding effect, and the copolymerization composition has the advantages of good adhesion with a steel roller and a nickel plate, no material accumulation, easiness in demolding, excellent heat resistance, chemical corrosion resistance and the like.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (4)
1. The UV mould pressing nickel plate seam welding rod is characterized by comprising the following components in parts by weight:
60-70 parts of fluorinated ethylene propylene resin;
20-30 parts of polyphenylene sulfide resin;
10-20 parts of tin or tin alloy;
wherein the melt index of the fluorinated ethylene propylene resin is 20-30g/10min, the fluorinated ethylene propylene resin is powder, the average particle size is 0.5-25 mu m, and the polyphenylene sulfide resin is branched chain type structure thermoplastic resin;
the polyphenylene sulfide resin is powder, and the average grain diameter is 0.5-25 mu m;
the tin or tin alloy is powder with average grain diameter of 0.5-25 μm.
2. The UV stamped ni plate seam electrode of claim 1 wherein the tin alloy is selected from one or more of tin-lead alloy, tin-copper alloy, tin-silver alloy and tin-bismuth alloy.
3. A method of making a UV molded ni-plate seam electrode as claimed in claim 1, comprising the steps of:
s1, uniformly mixing the fluorinated ethylene propylene resin, the polyphenylene sulfide resin and the tin or tin alloy, and cold-pressing to prepare a blank, wherein the mould pressing pressure is 20-35 MPa;
s2, freely sintering at the temperature of 360-380 ℃, and cooling and forming; and then the plate seam welding rod is obtained through mechanical processing.
4. Use of a UV stamped nickel plate seam welding electrode according to claim 1 in filling a plate seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483339.1A CN108356444B (en) | 2017-12-29 | 2017-12-29 | UV (ultraviolet) die-pressing nickel plate seam welding strip and application and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483339.1A CN108356444B (en) | 2017-12-29 | 2017-12-29 | UV (ultraviolet) die-pressing nickel plate seam welding strip and application and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108356444A CN108356444A (en) | 2018-08-03 |
| CN108356444B true CN108356444B (en) | 2020-12-29 |
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