CN102643475A - Polyethylene compound used for electrolysis cathode plate sealing strip and preparation method thereof - Google Patents
Polyethylene compound used for electrolysis cathode plate sealing strip and preparation method thereof Download PDFInfo
- Publication number
- CN102643475A CN102643475A CN2012101393155A CN201210139315A CN102643475A CN 102643475 A CN102643475 A CN 102643475A CN 2012101393155 A CN2012101393155 A CN 2012101393155A CN 201210139315 A CN201210139315 A CN 201210139315A CN 102643475 A CN102643475 A CN 102643475A
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- CN
- China
- Prior art keywords
- negative plate
- vilaterm
- sealed strip
- mixing material
- plate sealed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
Abstract
The invention provides a compound used for an electrolysis cathode plate sealing strip and a preparation method thereof, belonging to the technical field of plastic processing and application and the technical field of wet electrolysis of metals such as copper. The components used for producing the electrolysis cathode plate sealing strip include 100 parts of polyethylene resin, 0.1-20 parts of linear low density polyethylene, 0.1-10 parts of functional polymer, 0.1-1 part of oxidization inhibitor, 0.05-1 part of metal deactivator, 0.1-5 parts of flow modifier and a proper amount of colorant according to weight parts. The compound has the characteristics of long service life, high adhesion strength with a cathode plate and smooth surface of the molded sealing strip.
Description
Technical field
The present invention relates to the electrolytic negative plate sealed strip with Vilaterm mixing material and preparation method, it is good to have with the negative plate adhesive property, and the characteristics that the life-span is long belong to the wet method electrolysis tech field of metals such as plastics processing and application technology and copper.
Background technology
At present, suitability for industrialized production high purity copper, manganese, zinc mainly adopt electrolytic method.Wherein, important production parts are negative plate, introduce negative charge through electrode, and bivalent cupric ion or mn ion, zine ion reduce on negative plate and form copper, manganese, zinc, through the unit of delaminating cathode copper are peeled then, form highly purified metal.Negative plate mainly adopts stainless steel or titanium to process, and for reaching the purpose of insulation, shape of product rule, need add one deck insulated enclosure bar on the both sides of negative plate.
The working method of sealed strip has two kinds: 1) through forcing machine the Vilaterm fusion is directly extruded and be attached on the negative plate cooling then; 2) produce the insulated enclosure bar earlier, be set on the negative plate then.Produce the insulated enclosure bar through first method; There is the shortcoming with metal polar plate viscosifying power difference in the polythene material of manufacturer's use at present; Owing to electrolyte temperature higher (the electrolytic copper temperature is generally at 65 ℃) in the electrolyzer, material receives thermo-oxidative ageing simultaneously, exists in the electrolytic solution in addition and contains transition metal; Make degradation process quicken, the sealed strip life-span of producing in this way is generally about 3 months.After the insulated enclosure bar was aging, deformity appearred in the electrolytic copper that causes producing, as problems such as knob, end face be uneven occurred, influenced production marketing.When reusing, earlier sealed strip is peeled from negative plate, to the polishing of sealed strip place, melt extrude moulding again again, this has increased labour intensity greatly, and production efficiency is not high yet.Sealed strip through second method is produced can be with reference to the structure of Granted publication CN 201169646Y (application number 200820096325.4) " the sealed insulation contained side bar of electrolytic negative plate "; The sealed strip of this structure is made up of sealed insulation bar contained side and tensioning rod; Under the effect of tensioning rod, sealed edge is clamped negative plate.Yet, especially when middle electrolyte temperature is higher, be more prone to occur creep because macromolecular material has creep properties; Make the insulated enclosure bar of said structure the not tight phenomenon of folder occur; Have to coat sealer in the junction of sealed strip and negative plate, this has not only increased cost, simultaneously because sealer and the bounding force of sealed strip own are not strong; Electrolytic solution is penetrated on the negative plate of sealed strip seals at; Make metallic reducing at the sealed strip place, under the effect of mechanical force, sealed strip is accelerated destruction when peeling off.
This shows that there is poor toughness in the sealing bar, sealing effectiveness is bad, the life-span is short, be prone to defectives such as aging.
Summary of the invention
Deficiency to prior art; The present invention provides a kind of electrolytic negative plate sealed strip to use polyethylene compsn, produces sealed strip through extrusion by melting, uses the High molecular weight polyethylene resin; Be aided with linear low density polyethylene resin simultaneously and improve its toughness; Adding functional polymer increases the bounding force that constituent has solved constituent and negative plate, adds oxidation inhibitor and metal passivator and makes its life-span increase substantially, and adds the processing characteristics that flow ability modifying agent improves constituent.
The scheme that solves the problems of the technologies described above is: the electrolytic negative plate sealed strip is used the Vilaterm mixing material; The unit meter contains 100 parts of polyvinyl resins by weight, linear low density polyethylene resin 0.1-20 part, functional polymer 0.1-10 part; Oxidation inhibitor 0.1-1 part; Metal passivator 0.05-1 part, flow ability modifying agent 0.1-5 part, amount of colorant.
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material; Preferred scheme is: the unit meter contains 100 parts of polyvinyl resins by weight, linear low density polyethylene resin 5-15 part, functional polymer 2-6 part; Oxidation inhibitor 0.2-0.8 part; Metal passivator 0.06-0.08 part, flow ability modifying agent 1-3 part, amount of colorant.
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material, and preferred scheme is: said polyvinyl resin is a multipolymer, and comonomer is a terminal olefin, its density>=0.940g/cm
3, melt flow rate(MFR)≤1.0g/10min.
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material, and preferred scheme is: said linear low density polyethylene resin is a multipolymer, and comonomer is a terminal olefin, its density≤0.926g/cm
3, melt flow rate(MFR)≤2.0g/10min.
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material, and preferred scheme is: said functional polymer is an ethylene copolymer or poly material modified (preferred, the comonomer of said ethylene copolymer is a vinylformic acid; Preferably, said poly material modified be polycthylene grafted material; Preferably, said graft materials monomer is vinylformic acid, maleic anhydride, SY-Monomer G, vinylbenzene or said monomeric compound).
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material; Preferred scheme is: described oxidation inhibitor is major-minor oxidation inhibitor; The part by weight of major-minor oxidation inhibitor is 1:0.2-3 (preferred, primary antioxidant is Hinered phenols or amine primary antioxidant, and auxiliary antioxidant is phosphorous acid esters).
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material, and preferred scheme is: described metal passivator is acid amides or hydrazide kind compound.
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material; Preferred scheme is: described flow ability modifying agent is the mixture of inside and outside lubricant agent, and said inside and outside lubricant agent is one or more a mixture of following material: polyethylene wax, paraffin, Poly Propylene Wax, OPE, brown coal ester type waxes, calcium stearate, Zinic stearas, silicone lubricant and fluorinated lubricant.
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material, and preferred scheme is: described tinting material is carbon black or its masterbatch.
Described electrolytic negative plate sealed strip is used the Vilaterm mixing material, and preferred scheme is: the mass concentration of said black master is 5%-50%.
The present invention also provides the preparation method of said electrolytic negative plate sealed strip with the Vilaterm mixing material, is undertaken by following operation:
A) by weight, polyvinyl resin, linear low density polyethylene resin, functional polymer, oxidation inhibitor, metal passivator, lubricant, tinting material is even in stirrer for mixing, squeeze into feed bin;
B) with the compound in the feed bin with twin screw or single screw rod extruding pelletization, processing parameter is selected as follows:
Body temperature: 170-220 ℃, 190-220 ℃, 200-225 ℃, 210-230 ℃, 210-230 ℃, 210-230 ℃, head temperature: 210-220 ℃;
Engine speed: 30-60 rev/min, feeding rotating speed: 160-180 rev/min;
C) the pellet paper and plastics compound bag packing that is cut into.
The present invention is aided with the toughness of linear low density polyethylene resin constituent simultaneously through using the High molecular weight polyethylene resin; Can satisfy industries such as electrolytic copper when mechanically peel to the requirement of sealed strip flexible; The adding functional polymer has increased the bounding force of constituent and negative plate greatly, and sealing effectiveness strengthens greatly, has overcome the phenomenon of electrolytic solution infiltration seals at; Add the life-span that oxidation inhibitor has improved the heat-resisting oxygen of constituent; Metal passivator makes transition metal ion reduce significantly the catalyzed degradation effect of constituent, and its life-span can be increased to more than 2 years, the tinting material carbon black of adding or its masterbatch; Have aged effect against sunshine, can improve the storage and the work-ing life of sealed strip.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is described.
The material that the present invention adopts has: polyvinyl resin, linear low density polyethylene resin, functional polymer, oxidation inhibitor, metal passivator, flow ability modifying agent, amount of colorant.
Described polyvinyl resin is a copolymerized macromolecule amount high density polyethylene(HDPE), and the requirement of each item performance index is: comonomer is a terminal olefin, its density>=0.940g/cm
3, melt flow rate(MFR)≤1.0g/10min.
Said linear low density polyethylene resin is a multipolymer, and comonomer is a terminal olefin, its density≤0.926g/cm
3, melt flow rate(MFR)≤2.0g/10min.The purpose that adds type low density polyethylene resin is further to improve the toughness of constituent.
Described functional polymer ethylene copolymer or poly material modified; The comonomer of ethylene copolymer is a vinylformic acid; Poly material modified be polycthylene grafted material, grafted monomer is vinylformic acid, maleic anhydride, SY-Monomer G, vinylbenzene or above-mentioned monomeric compound.It utilizes the polarity of functional polymer to improve the bonding force of constituent and negative plate as the time spent, improves sealing effectiveness.
Described oxidation inhibitor is the Hinered phenols material, and its effect is to catch the radical that Vilaterm is heated in processing or use or receives action of ultraviolet ray formation, guarantees the life-span that material uses.
Described metal passivator is acid amides or hydrazide kind compound; The adding of metal passivator can form inner complex with transition metal ion in the electrolytic solution especially cupric ion, iron ion; Reduce the catalyzed degradation of transition metal ion, thereby improve its life-span constituent.
The inside and outside lubricant agent that adds can improve the flowability of constituent, the electric current of forcing machine when reducing extrusion moulding, and the sealed strip smooth surface of producing simultaneously helps peeling off of electrolytic metal.
The tinting material carbon black or its masterbatch that add are the screeners of UV-light, can improve the storage and the work-ing life of sealed strip by the radical of uviolizing generation.
Below be the embodiment of several kinds of different proportionings of the present invention:
Annotate: EAA is ethene and PEMULEN TR2, and LLDPE-g-MAH is the LLDPE grafted maleic anhydride, and LLDPE-g-AA (St) is a LLDPE graft acrylic acid vinylbenzene.
The present invention prepares the electrolytic negative plate sealed strip:
A) by weight, polyvinyl resin, linear low density polyethylene resin, functional polymer, oxidation inhibitor, metal passivator, lubricant, tinting material is even in stirrer for mixing, squeeze into feed bin;
B) with the compound in the feed bin with twin screw or single screw rod extruding pelletization, processing parameter is selected as follows:
Body temperature: 170-220 ℃, 190-220 ℃, 200-225 ℃, 210-230 ℃, 210-230 ℃, 210-230 ℃, head temperature: 210-220 ℃;
Engine speed: 30-60 rev/min, feeding rotating speed: 160-180 rev/min;
C) the pellet paper and plastics compound bag packing that is cut into.
The performance representative value of the mixing material that the present invention obtains is seen table 1.
Table 1 electrolytic negative plate sealed strip is with the performance performance representative value of Vilaterm mixing material
| Sequence number | Project | Performance |
| 1 | Tensile strength (MPa) | ≥25 |
| 2 | Elongation at break (%) | ≥350 |
| 3 | Oxidation induction time (min, 200 ℃) | ≥200 |
| 4 | 20 ℃ of volume specific resistances (Ω cm) | ≥1.5×10 13 |
| 5 | Dielectric strength (MV/m, 20 ℃) | ≥25.6 |
| 6 | Embrittlement temperature (℃) | ＜－70 |
| 7 | Stripping strength (N/cm) with pole plate | ≥40 |
Can find out that by last table good technique effect of the present invention is embodied in:
1, added functional polymer in the mixing material, the sealed strip that extrusion moulding obtains and the stripping strength of pole plate are high, good sealing effect;
2, added oxidation inhibitor, metal passivator in the mixing material, the life-span of material prolongs greatly, can reach more than 2 years;
3, toughness of material is good, when peeling off, can stand the impact of mechanical force, and is not broken;
4, add flow ability modifying agent in the mixing material and can improve Drawing abillity, the sealed strip smooth surface of processing simultaneously, the cathode copper of production, manganese, zinc are prone to get off from sur-face peeling.
Mixing material of the present invention can adopt single screw rod to carry out the production of insulated enclosure bar, and processing temperature is: fuselage 180-220 ℃, and head 210-230 ℃.Above processing condition can be adjusted as the case may be, and generally speaking, top temperature is not generally above 240 ℃.
Should be pointed out that above embodiment is the more representational example of the present invention, obvious technical scheme of the present invention is not limited to the foregoing description.A lot of distortion can also be arranged.From then on those of ordinary skill in the art with disclosed can mention or it is associated in the invention, all should think the claimed scope of this patent.
Claims (10)
1. the electrolytic negative plate sealed strip is used the Vilaterm mixing material; It is characterized by: the unit meter contains 100 parts of polyvinyl resins by weight, linear low density polyethylene resin 0.1-20 part, functional polymer 0.1-10 part; Oxidation inhibitor 0.1-1 part; Metal passivator 0.05-1 part, flow ability modifying agent 0.1-5 part, amount of colorant.
2. the electrolytic negative plate sealed strip is used the Vilaterm mixing material; It is characterized by: the unit meter contains 100 parts of polyvinyl resins by weight, linear low density polyethylene resin 5-15 part, functional polymer 2-6 part; Oxidation inhibitor 0.2-0.8 part; Metal passivator 0.06-0.08 part, flow ability modifying agent 1-3 part, amount of colorant.
3. electrolytic negative plate sealed strip according to claim 1 and 2 is used the Vilaterm mixing material, it is characterized by: said polyvinyl resin is a multipolymer, and comonomer is a terminal olefin, its density>=0.940g/cm
3, melt flow rate(MFR)≤1.0g/10min.
4. electrolytic negative plate sealed strip according to claim 1 and 2 is used the Vilaterm mixing material, it is characterized by: said linear low density polyethylene resin is a multipolymer, and comonomer is a terminal olefin, its density≤0.926g/cm
3, melt flow rate(MFR)≤2.0g/10min.
5. electrolytic negative plate sealed strip according to claim 1 and 2 is used the Vilaterm mixing material, it is characterized by: said functional polymer is an ethylene copolymer or poly material modified (preferred, the comonomer of said ethylene copolymer is a vinylformic acid; Preferably, said poly material modified be polycthylene grafted material; Preferably, said graft materials monomer is vinylformic acid, maleic anhydride, SY-Monomer G, vinylbenzene or said monomeric compound).
6. electrolytic negative plate sealed strip according to claim 1 and 2 is used the Vilaterm mixing material; It is characterized by: described oxidation inhibitor is major-minor oxidation inhibitor; The part by weight of major-minor oxidation inhibitor is that 1:0.2-3 is (preferred; Primary antioxidant is Hinered phenols or amine primary antioxidant, and auxiliary antioxidant is phosphorous acid esters).
7. electrolytic negative plate sealed strip according to claim 1 and 2 is used the Vilaterm mixing material, it is characterized by: described metal passivator is acid amides or hydrazide kind compound.
8. electrolytic negative plate sealed strip according to claim 1 and 2 is used the Vilaterm mixing material; It is characterized by: described flow properties-correcting agent is the mixture of inside and outside lubricant agent, and said inside and outside lubricant agent is one or more a mixture of following material: polyethylene wax, paraffin, Poly Propylene Wax, OPE, brown coal ester type waxes, calcium stearate, Zinic stearas, silicone lubricant and fluorinated lubricant.
9. electrolytic negative plate sealed strip according to claim 1 and 2 is used the Vilaterm mixing material, it is characterized by: described tinting material is carbon black or its masterbatch (preferred, the mass concentration of said black master is 5%-50%, more preferably 20%-30%).
According to claim 1 or 2 said electrolytic negative plate sealed strips with the preparation method of Vilaterm mixing material, it is characterized by: undertaken by following operation:
A) by weight, polyvinyl resin, linear low density polyethylene resin, functional polymer, oxidation inhibitor, metal passivator, lubricant, tinting material is even in stirrer for mixing, squeeze into feed bin;
B) with the compound in the feed bin with twin screw or single screw rod extruding pelletization, processing parameter is selected as follows:
Body temperature: 170-220 ℃, 190-220 ℃, 200-225 ℃, 210-230 ℃, 210-230 ℃, 210-230 ℃, head temperature: 210-220 ℃;
Engine speed: 30-60 rev/min, feeding rotating speed: 160-180 rev/min;
C) the pellet paper and plastics compound bag packing that is cut into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210139315.5A CN102643475B (en) | 2012-05-08 | 2012-05-08 | Polyethylene compound used for electrolysis cathode plate sealing strip and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210139315.5A CN102643475B (en) | 2012-05-08 | 2012-05-08 | Polyethylene compound used for electrolysis cathode plate sealing strip and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102643475A true CN102643475A (en) | 2012-08-22 |
| CN102643475B CN102643475B (en) | 2014-04-02 |
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| CN201210139315.5A Expired - Fee Related CN102643475B (en) | 2012-05-08 | 2012-05-08 | Polyethylene compound used for electrolysis cathode plate sealing strip and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037928A (en) * | 2015-07-01 | 2015-11-11 | 昆明亘宏源科技有限公司 | Preparation method of electrolysis negative plate high-performance insulation edge clamping strip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407009A (en) * | 2001-08-24 | 2003-04-02 | 夏平 | Antistatic polyolefine film |
| CN1464005A (en) * | 2002-06-11 | 2003-12-31 | 上海高分子功能材料研究所 | Silicon alkyl cross bonding polyethylene fire-retardancy insulating plastics |
| CN102241850A (en) * | 2011-06-22 | 2011-11-16 | 青岛润兴塑料新材料有限公司 | Polyethylene modified plastic with high performance and double resistance and manufacture method thereof |
-
2012
- 2012-05-08 CN CN201210139315.5A patent/CN102643475B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407009A (en) * | 2001-08-24 | 2003-04-02 | 夏平 | Antistatic polyolefine film |
| CN1464005A (en) * | 2002-06-11 | 2003-12-31 | 上海高分子功能材料研究所 | Silicon alkyl cross bonding polyethylene fire-retardancy insulating plastics |
| CN102241850A (en) * | 2011-06-22 | 2011-11-16 | 青岛润兴塑料新材料有限公司 | Polyethylene modified plastic with high performance and double resistance and manufacture method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037928A (en) * | 2015-07-01 | 2015-11-11 | 昆明亘宏源科技有限公司 | Preparation method of electrolysis negative plate high-performance insulation edge clamping strip |
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| CN102643475B (en) | 2014-04-02 |
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