CN104043570A - Coating protection method for spraying hot melted high-molecular polymer on transmission towers - Google Patents
Coating protection method for spraying hot melted high-molecular polymer on transmission towers Download PDFInfo
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- CN104043570A CN104043570A CN201410308706.4A CN201410308706A CN104043570A CN 104043570 A CN104043570 A CN 104043570A CN 201410308706 A CN201410308706 A CN 201410308706A CN 104043570 A CN104043570 A CN 104043570A
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Abstract
The invention relates to a coating protection method for spraying hot melted high-molecular polymer on transmission towers. The coating protection method is suitable for fastened sealing and corrosion resisting of fasteners of transmission towers in coasts, heavy industrial areas and the like, and includes the following steps: (1) cleaning, (2) melting, and (3) spraying the hot melted high-molecular polymer, wherein the hot melted high-molecular polymer comprises, by weight, 15% to 40% of PVC, 30% to 60% of DOP, 15% to 40% of epoxy resin, 0.5% to 2% of magnesium stearate, 0.5% to 2% of light CaCO3, 1% to 2.5% of TiO2 and 1% to 2.5% of TBC. The coating protection method has the advantages of being good in hot melted liquidity and filling performance, resistant to ultraviolet radiation aging, good in water resistance and attractive in appearance.
Description
Affiliated technical field
The present invention relates to a kind of fit sealing and etch-proof guard method of the securing member that is applicable to the power transmission and transformation such as strand, heavy industrial district shaft tower, the particularly coated guard method of a kind of transmission tower spraying hot melt high molecular polymer.
Background technology
Securing member is one of critical component of transmission tower, and it is related to reliability and the security of transmission tower.Its anti-corrosion method is divided into three kinds, and the one, adopt securing member to take protective coating to comprise cadmium plating, electrogalvanizing, galvanizing, mechanical zinc-plating, phosphatization processing etc.; The 2nd, adopt entirety to take the method for coating protection, as: coating anticorrosive paint, metal spraying, covering cement layer, the methods such as bottom zinc rich primer, top layer epoxy resin cover layer; The 3rd, adopt structure vaseline coated method, adopt the vaseline anti-corrosion plaster layer, corrosion protection belt, fiber-reinforced resin layer of multilayer etc.These technology have a wide range of applications in atmospheric environment, and obtain good effect.But suffering the invasion and attack of harsh conditions of sunshine, alternation of wetting and drying, weathering etc. in the military service process of transmission tower and outside the heavy corrosion that causes destroys; also to bear the effect of the alternate load of wind simultaneously; this effect may cause securing member to become flexible, clad breaks equivalent risk; in real process, there is the problem that protective layer local damage, service life shorten; especially at the comparatively harsh environment of the environment such as strand; even there is losing the serious consequence of mechanical strength; affect its dependability, jeopardize the structural safety of transmission tower.
Summary of the invention
Do not consider the feature of the impact of alternate load on its locking property in order to overcome defeated change shaft tower securing member syndeton considering corrosion protection, the present invention proposes the coated guard method of a kind of transmission tower securing member spraying hot melt high molecular polymer; The method, by securing member syndeton surface spraying hot melt high molecular polymer, forms clad, solves the protection question of securing member in corrosive environment and alternate load condition.
The technical solution used in the present invention is:
The coated guard method of a kind of transmission tower spraying hot melt high molecular polymer, is characterized in that adopting following steps:
1) transmission tower is cleared up, adopted steel brush to carry out surface finish, know dust and iron rust, then except anhydrating and oil content;
2) by hot melt high molecular polymer heat fused;
3) at the transmission tower surface uniform spraying hot melt high molecular polymer of handling well, when spraying hot melt high molecular polymer, adopt a small amount of principle repeatedly, progressively will protect structure to cover evenly and levelling, make its surface regular;
Described hot melt high molecular polymer by weight percentage composition is: PVC:15-40, dioctyl phthalate DOP:30-60, epoxy resin: 15-40, dolomol: 0.5-2, light caco3: 0.5-2, TiO2:1-2.5, fire retardant TBC:1-2.5.
The coated guard method of transmission tower spraying hot melt high molecular polymer of the invention described above, in order to improve better filling capacity, the mobility of polymer, described PVC is emulsion method polymeric polyvinyl chloride resin, K value 63, degree of polymerization 800-900.In the obvious aobvious low viscosity of low shear rate following table, show for Newtonian fluid characteristic in high-rate of shear following table.There is outstanding fusion rate, outstanding rheological behavior.
The coated guard method of transmission tower spraying hot melt high molecular polymer of the invention described above, for improve better epoxy resin weatherability, ageing-resistant performance, prevent that moisture from infiltrating, and also adds the isocyanates of 2-5% and the organic siliconresin of 2-5%.
Behind the surface of the fastening structure of handling well, evenly spray this high molecular polymer, can reach etch-proof effect.
The present invention has the following advantages:
1. spraying hot melt high molecular polymer of the present invention has the fastening and anti-loosening effect of the securing member of raising, can be filled to the gap of screw thread, pad and nut and structure.
2. the polymorphic structure levelling of spraying hot melt high molecular polymer of the present invention for securing member is connected, cover the effect of hot melt high molecular polymer, can select formula according to environment temperature, to change the hot melt mobility of anti-corrosion material, reach can blind object.
3. spraying hot melt high molecular polymer of the present invention has good flexibility, the change in displacement can the reciprocal load of commensurate structure causing, can with well the coincideing of uncured ointment, there is good resistance to water without be full of cracks.
4. the spraying hot melt high molecular polymer that the present invention adopts can fast filming, has ultraviolet-resistant aging, water-tolerant and aesthetic function, can prevent the infiltration such as dust and water.
5. simple to operate, the easy construction of spraying hot melt high molecular polymer means of defence of the present invention, is applicable to the labyrinth protection that the securing member of the transmission tower in severe rugged environment connects, and protection effect is good, and the anticorrosion life-span is long, under alternate load without destruction.
Brief description of the drawings
Fig. 1 is that the ageing time of the embodiment of the present invention is to specimen surface carbon EDAX results
In figure, abscissa is ageing time, and ordinate is carbon atom concn.
Detailed description of the invention
embodiment 1:
The present embodiment is to be that example describes the present invention to the construction of prevention work of its strand transmission tower structure:
1) transmission tower is cleared up, adopted steel brush to carry out surface finish, know dust and iron rust, adopt except anhydrating and oil content.
2) by hot melt high molecular polymer heat fused.
3) evenly spray hot melt high molecular polymer at the body structure surface of handling well.When spraying hot melt high molecular polymer, adopt a small amount of principle repeatedly, progressively will protect structure to cover evenly and levelling, make its surface regular.
Described spraying hot melt high molecular polymer, composition is by weight percentage: PVC:20 DOP:45 epoxy resin: 30 dolomols: 1.5 light caco3s: 1.5 TiO2:1 TBC:1.
Above-mentioned PVC adopts emulsion method polymerization PVC, K value 63, the degree of polymerization 900.In the obvious aobvious low viscosity of low shear rate following table, show for Newtonian fluid characteristic in high-rate of shear following table.Intrinsic viscosity: BF viscosity(20rpm) 4300cps; Viscosity (500/sec) 2300cps.
embodiment 2:
The present embodiment is to be that example describes the present invention to the construction of prevention work of its strand transmission tower structure:
1) transmission tower is cleared up, adopted steel brush to carry out surface finish, know dust and iron rust, adopt except anhydrating and oil content.
2) by hot melt high molecular polymer heat fused.
3) evenly spray hot melt high molecular polymer at the body structure surface of handling well.When spraying hot melt high molecular polymer, adopt a small amount of principle repeatedly, progressively will protect structure to cover evenly and levelling, make its surface regular.
Described spraying hot melt high molecular polymer, composition is by weight percentage: PVC:30 DOP:28 epoxy resin: 30 dolomols: 1.5 light caco3s: the polyurethane-modified organic siliconresin 4 of 1.5 TiO2:1 TBC:1 isocyanates 3.
Above-mentioned PVC adopts emulsion method polymerization PVC, K value 63, the degree of polymerization 900.In the obvious aobvious low viscosity of low shear rate following table, show for Newtonian fluid characteristic in high-rate of shear following table.Intrinsic viscosity: BF viscosity(20rpm) 4300cps; Viscosity (500/sec) 2300cps.
Test case 1 composite spraying coating EIS measures
Test method, carries out anti-corrosion treatment according to the mode of recording in above-described embodiment 2 to structural member, then the structure through protective treatment is carried out to alternation tension, and the test period is 3000 weeks, and pulling force is 5000N.After by this coating/16Mn steel system in 3.5%NaCl solution, measure its AC impedance.
It is generally acknowledged, coating resistance during lower than 106 Ω cm2, is in the metal erosion under coating bottom, starts, and shows that this coating lost efficacy.Soak 1 day and 30 days, the resistance of coating and the variation of electric capacity are larger.And spraying sample soaks coating electrochemical impedance mould value after 30 days and is all greater than 106 Ω cm2, illustrate that this coating can prevent metal erosion effectively.
Aging behavior in test case 2 fluorescence ultraviolet artificial climate environment
Embodiment 2 is tested, as shown in Figure 1, inside and outside the hole that aging rear coating surface is produced, carry out X-ray energy spectrum analysis, variation tendency is basically identical, result shows, C outside hole is than all higher than in hole, illustrate ageing products the content of specimen surface higher than hole in, the aging reaction in modified composite material fluorescence ultraviolet artificial climate environment originates in specimen surface.From ageing time, specimen surface carbon EDAX results is shown: spraying hot melt coating of high molecular polymer has good ultraviolet tolerance.
Claims (3)
1. the coated guard method of transmission tower spraying hot melt high molecular polymer, is characterized in that adopting following steps:
1) transmission tower is cleared up, adopted steel brush to carry out surface finish, know dust and iron rust, then except anhydrating and oil content;
2) by hot melt high molecular polymer heat fused;
3) at the transmission tower surface uniform spraying hot melt high molecular polymer of handling well, when spraying hot melt high molecular polymer, adopt a small amount of principle repeatedly, progressively will protect structure to cover evenly and levelling, make its surface regular;
Described hot melt high molecular polymer by weight percentage composition is: PVC:15-40, dioctyl phthalate DOP:30-60, epoxy resin: 15-40, dolomol: 0.5-2, light caco3: 0.5-2, TiO2:1-2.5, fire retardant TBC:1-2.5.
2. the coated guard method of a kind of transmission tower spraying hot melt high molecular polymer as claimed in claim 1, is characterized in that: also add the isocyanates of 2-5% and the polyurethane-modified organic siliconresin of 2-5%.
3. the coated guard method of a kind of transmission tower spraying hot melt high molecular polymer as claimed in claim 2, is characterized in that: described PVC is emulsion method polymeric polyvinyl chloride resin, K value 63, degree of polymerization 800-900.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410308706.4A CN104043570B (en) | 2014-07-01 | 2014-07-01 | The coated guard method of a kind of transmission tower spraying hot melt high molecular polymer |
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| CN201410308706.4A CN104043570B (en) | 2014-07-01 | 2014-07-01 | The coated guard method of a kind of transmission tower spraying hot melt high molecular polymer |
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| CN104043570A true CN104043570A (en) | 2014-09-17 |
| CN104043570B CN104043570B (en) | 2015-09-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923524A (en) * | 2015-06-12 | 2015-09-23 | 山东电力建设第一工程公司 | Wind generating set spindle etched surface treatment method |
| CN108641249A (en) * | 2018-04-27 | 2018-10-12 | 合肥海银杆塔有限公司 | A kind of special type electric force pole tower processing method |
| CN108976713A (en) * | 2018-07-19 | 2018-12-11 | 合肥海银杆塔有限公司 | A kind of composite material pole tower exterior protection layer material formula |
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| JPH02158331A (en) * | 1988-12-13 | 1990-06-18 | Meisei Kogyo Kk | Heat insulating structure |
| WO1995013307A1 (en) * | 1993-11-12 | 1995-05-18 | Refac International, Ltd. | Polymer viscosity depressant/super cooling thermoplastic urethane |
| CN102120856A (en) * | 2011-01-13 | 2011-07-13 | 杭州鸿雁电器有限公司 | Polyvinyl chloride/organic hydrotalcite nanocomposite and preparation method thereof |
| CN102993633A (en) * | 2012-10-31 | 2013-03-27 | 杨建标 | Insulated environment-friendly cable material |
| CN103406247A (en) * | 2013-03-29 | 2013-11-27 | 北汽福田汽车股份有限公司 | Wear-resisting layer coating method |
| CN103522736A (en) * | 2013-09-22 | 2014-01-22 | 苏州市湘园特种精细化工有限公司 | Method for manufacturing inflaming retarding plastic rollers |
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2014
- 2014-07-01 CN CN201410308706.4A patent/CN104043570B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02158331A (en) * | 1988-12-13 | 1990-06-18 | Meisei Kogyo Kk | Heat insulating structure |
| WO1995013307A1 (en) * | 1993-11-12 | 1995-05-18 | Refac International, Ltd. | Polymer viscosity depressant/super cooling thermoplastic urethane |
| CN102120856A (en) * | 2011-01-13 | 2011-07-13 | 杭州鸿雁电器有限公司 | Polyvinyl chloride/organic hydrotalcite nanocomposite and preparation method thereof |
| CN102993633A (en) * | 2012-10-31 | 2013-03-27 | 杨建标 | Insulated environment-friendly cable material |
| CN103406247A (en) * | 2013-03-29 | 2013-11-27 | 北汽福田汽车股份有限公司 | Wear-resisting layer coating method |
| CN103522736A (en) * | 2013-09-22 | 2014-01-22 | 苏州市湘园特种精细化工有限公司 | Method for manufacturing inflaming retarding plastic rollers |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923524A (en) * | 2015-06-12 | 2015-09-23 | 山东电力建设第一工程公司 | Wind generating set spindle etched surface treatment method |
| CN108641249A (en) * | 2018-04-27 | 2018-10-12 | 合肥海银杆塔有限公司 | A kind of special type electric force pole tower processing method |
| CN108976713A (en) * | 2018-07-19 | 2018-12-11 | 合肥海银杆塔有限公司 | A kind of composite material pole tower exterior protection layer material formula |
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| CN104043570B (en) | 2015-09-16 |
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