CN102408813B - High-electric-conductivity heavy-anticorrosion wave-absorbing powder paint - Google Patents
High-electric-conductivity heavy-anticorrosion wave-absorbing powder paint Download PDFInfo
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- CN102408813B CN102408813B CN 201110295436 CN201110295436A CN102408813B CN 102408813 B CN102408813 B CN 102408813B CN 201110295436 CN201110295436 CN 201110295436 CN 201110295436 A CN201110295436 A CN 201110295436A CN 102408813 B CN102408813 B CN 102408813B
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- 239000003973 paint Substances 0.000 title abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 43
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 7
- VOOLKNUJNPZAHE-UHFFFAOYSA-N formaldehyde;2-methylphenol Chemical compound O=C.CC1=CC=CC=C1O VOOLKNUJNPZAHE-UHFFFAOYSA-N 0.000 claims description 6
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- 239000000126 substance Substances 0.000 claims description 6
- MNAHQWDCXOHBHK-UHFFFAOYSA-N 1-phenylpropane-1,1-diol Chemical compound CCC(O)(O)C1=CC=CC=C1 MNAHQWDCXOHBHK-UHFFFAOYSA-N 0.000 claims description 3
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Abstract
The invention relates to a high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint which is prepared from the following raw materials in parts by weight: 450-500 parts of epoxy resin, 50-100 parts of curing agent, 50-100 parts of conductive pigment, 200-250 parts of conductive filler and 30-50 parts of assistant. The preparation method of the high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint comprises the following steps: adding the materials into a high-speed mixer; after carrying out dry mixing, adding the mixture into an extruder, and melting, mixing, cooling and pelleting at the extrusion temperature of 80-90 DEG C; and pulverizing with a pulverizer, grading, screening and packaging to obtain the finished powder paint product. The invention has the characteristic of high electric conductivity, has an absorption action on certain electromagnetic waves, can be used as a preferred coating for electromagnetic shielding, and is applied to the fields of frequency converter shells, micro-current and light-current component shells and the like. In addition, the invention has excellent anticorrosion property and favorable electric conductivity (105 ohm), and the conducting power is almost approximate to that of a metallic conductor; and thus, the high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint is an ideal antistatic coating, and can ensure safety in the aspects of fire resistance and explosion resistance.
Description
Technical field
The invention belongs to paint field, particularly a kind of high conduction, heavy anticorrosion, suction ripple powder coating.
Background technology
When the device fabrications such as the storage of mining, oil production and smelting, inflammable and explosive oil gas and transportation, anticorrosion anti-electrostatic is very important link, is safe important guarantee.Electrostatic accumulation easily produces and sparks, if inflammable gas (or flammable liquid volatile matter) is arranged in the surrounding medium, just may blast, and causes great personnel casualty accidents and damage to property.This kind equipment manufacturer all takes into full account this problem mostly in when design, and the equipment coating of requirement not only has excellent antiseptic property, also will possess good conductivity, easy factors such as being coated with property, conduction weather resistance, low cost.
Along with the in recent years development of little electricity, light current components and parts, large-scale integrated circuit; also require shell that reliable electrostatic protection and electrostatic shielding function will be arranged; institute's coating energy absorbing high-frequency radiation and the electromagnetic energy of high energy make inner fragile element obtain good protection.Such as computer host housing, motor frequency conversion device outer cover, Multifunctional power distribution cabinet coating, gas-jar, precision instrumentation shell etc.
Aspect military project, sometimes also can relate to anti-electronics interference, stealthy function in addition, the coating absorbing radar wave also is stealthy a kind of important means.These all require the specific functionality of coating stronger.
At present, not yet find to meet the coating products of above-mentioned functions.
Summary of the invention
(the two formed coating is insulation to the object of the invention is to overcome the technical deficiency that has common paint, ordinary powder coating now, can't lead and destatic), the durable coating coating that provide a kind of energy to conduct electricity, energy is anticorrosion, can inhale ripple, this coating once gets final product thick being coated with, and construction is simple.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high conduction, heavy anticorrosion, suction ripple powder coating, its raw material consists of component and parts by weight are respectively:
And, the mixture that described Resins, epoxy is comprised of CYD014U Resins, epoxy, 907 Resins, epoxy, o-cresol formaldehyde epoxy resin, its part by weight is: CYD014U Resins, epoxy: 907 Resins, epoxy: o-cresol formaldehyde epoxy resin=300: 150: 35.
And described solidifying agent is imidazoles and phenols curing agent, for glyoxal ethyline, dihydroxyphenyl propane are the linear resin of end group.
And described conducting pigment is comprised of conductive titanium dioxide and graphitized carbon black, and its part by weight is: conductive titanium dioxide: graphitized carbon black=1: 5.
And described conductive filler material is the mixture of conduction barium sulfate, conduction zinc powder, electrically conductive polyaniline, and its part by weight is respectively: conduction barium sulfate: conduction zinc powder: electrically conductive polyaniline=25: 5: 1.
And described auxiliary agent is 788 flow agents, 701B brightening agent, benzoic mixture, and its part by weight is: 788 flow agents: the 701B brightening agent: st-yrax=9: 7: 3.
And the chemical molecular formula of described electrically conductive polyaniline is:
Advantage of the present invention and positively effect are:
1, the present invention adopts the oblong link epoxy resins of repeating unit 3-7, be equipped with heavy anti-corrosive type o-cresol formaldehyde resin, has replaced the liquid epoxy that paint adopts and has added the polyamine curing system, improved erosion resistance, bending resistance, and strong adhesion, do not ftracture, do not peel off, preservative property are excellent.
2, the present invention adopts phenolic hydroxyl group long-chain solidifying agent, with the modified imidazole catalytic curing in the hope of reaching the target of fast setting.For improving the cleanliness factor of Resins, epoxy, abandon the high shortcoming of the residual chlorine dose of general WATER-WASHING METHOD (the high infringement for anticorrosion coat of residual chlorine dose is fatal defective), can adopt the heating in medium frequency fast setting, also available ordinary hot baking oven is heating and curing, and uses checking through client's actual production, and is simple to operation, be fit to automation paint, coat-thickness is easy to control, and energy efficient and labour cost are remarkable, obtain preferably anticorrosion detection effect.
3, coating of the present invention is the novolac epoxy resin molecular structure, not only contain more phenyl ring and hydroxyl, and long flexible chain arranged, be to aim at the double antiseptic powder coating design, fabulous intermiscibility is arranged, reactive behavior is high, very strong adhesive power is arranged, but fast setting, cross-linking density is high, films to have remarkable rigidity and the mechanical propertys such as humidity resistance, chemical-resistant, solvent resistance, anti-cathodic disbonding, levelling property and snappiness, shock resistance.
4, the selected pigment of the present invention, filler component are: conductive titanium dioxide, conductive carbon black, electrically conductive graphite, conduction barium sulfate, conduction zinc powder, electrically conductive polyaniline, taken into account conductive doped and common advantage intrinsic conduction, the surface resistivity of coating is only had below 105 ohm, almost the conductivity with metallic conductor is the same, any static all can be led away fast, the possibility of absolutely not gathering.
5, the prepared heavy anticorrosion suction ripple powder coating of high conduction of the present invention is mainly used in mine gas pipeline, mine exhaust ventilation pipeline, coal gas basin, gas line, oily vapour storage cabinet and pipeline valve, the application of inflammable and explosive medium transmission line; Coating that this coating generates detects through relevant authoritative department, and conductivity and antiseptic property are excellent, can reach the index of import like product fully, some index even surpass external product, and price also is better than imported product.
Description of drawings
Fig. 1 is the addition of graphitized carbon black of the present invention and the variation diagram of resistance value.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The heavy anticorrosion suction ripple powder coating of a kind of high conduction, its raw material consists of component and parts by weight are respectively:
The preparation method is:
Above-mentioned each material is added to high speed mixer by weight, behind dry blending, be added to forcing machine, carry out conventional melting, mixing, cooling, compressing tablet at extrusion temperature 80-90 ℃, again through pulverizer pulverizing, classification, sieve, pack, namely become the powder coating final product.
The below narrates respectively formation and the function of each raw material:
1, Resins, epoxy is the mixture of three kinds of Resins, epoxy, and its each component consists of and the optimum weight umber is respectively:
CYD014U Resins, epoxy: 300;
907 Resins, epoxy: 150;
O-cresol formaldehyde epoxy resin: 35.
The thinking of single Resins, epoxy kind in the protective system before the present invention abandons, adopt the different epoxy-resin systems of different kinds of molecules structure, combine with CYD014U Resins, epoxy to arrange in pairs or groups by a certain percentage and use such as long carbochain 907H epoxy, polyfunctional group ECN o-cresol formaldehyde epoxy resin, macromole complementary networks structure, form fine and close coating, the mean polymerisation degree of contained Resins, epoxy should be controlled between 4～9.
2, solidifying agent employing glyoxal ethyline, dihydroxyphenyl propane are linear resin (the appearance white crystal of end group, fusing point ℃ 143.0～146.0, content % 〉=99.5), purpose is for making coating low temperature fast setting and having heavy anti-corrosion function, to improve film flexibility, increase the probability of winding, embedding, the poly-hydroxy structure that the while solidifying agent has has also improved the sticking power to base material.
3, conducting pigment: be comprised of conductive titanium dioxide, graphitized carbon black, its optimum weight umber is respectively:
Conductive titanium dioxide: 10
Graphitized carbon black: 50.
The widest conductive doped as main take conductive carbon black of present stage purposes on market, its output comes first of conductive articles.When conductive carbon black content is low, surface resistivity substantially not have to change or variation very little, along with the increase of conductive carbon black content, the surface resistivity slow decreasing; Surface resistivity declines to a great extent when reaching percolation threshold, forming the curve of one section steeper. the distance that most of conductive carbon black particles this moment be describeds is reduced to and is enough to contact with adjacent particles or by electronics jump circuitous formation continuous conductive path or conductive network, thereby the surface resistivity sudden change occurs and tend towards stability above the surface resistivity variation of powder coating behind the percolation threshold.
4, conductive filler material: be the mixture of conduction barium sulfate, conduction zinc powder, electrically conductive polyaniline, its optimum weight umber is respectively:
Conduction barium sulfate: 250
Conduction zinc powder: 50
Electrically conductive polyaniline: 10.
Above-mentioned three kinds of filler conductivities are excellent, and zinc powder can not only improve conductivity, but also plays the electrochemical protection function of sacrificial anode and protective cathode, and the heavy anti-corrosion function that improves coating is of great importance; Each material is easily obtained in addition, and cost is low, but does not reduce the properties of filming.
Electrically conductive polyaniline has excellent environmental stability, higher electroconductibility, polyaniline paint can form oxide compound in the metallic surface, when coatingsurface has cut or cavity, polyaniline can be repaired the chemical aging between metal or the oxide compound, the coating at exposed position still has good preservative effect, and this characteristic has the incomparable advantage of other coating; Under acid (acid rain) environment, the coating that polyaniline arranged exceeds 100 times than the corrosion resistance coating of this component not.Electrically conductive polyaniline has become that industry generally acknowledges one of conducting polymer of application prospect most.The below is the chemical molecular formula of electrically conductive polyaniline:
5, auxiliary agent: be the mixture of flow agent, brightening agent, defoamer, its optimum weight umber is respectively:
Flow agent (788 flow agent): 9
Brightening agent (701B brightening agent): 7
Pore eliminator (st-yrax): 3
Various raw material of the present invention is the commercially available prod.
The present invention has guaranteed the high conductivity of coating, heavy preservative property, suction hertzian wave.Warping resistance, snappiness significantly improve, and the sticking power of coating, corrosion resistance have also passed through the GB correlation detection
Practical application effect and test situation:
One, coating is tested its resistance by surface resistivity and is: 10
5What (Ω .m) this index reflected is conductive coating performance
Two, satisfy domestic antistatic aids manufacturing enterprise and apply requirement, and carried out the batch production practice.
Be mainly used in electrode materials, electrostatic shielding material, anti-corrosion of metal corrosion material, electrolytic condenser, microwave absorbing stealth material, the anodal decorative material of electroluminescent device, conductive coating, chemistry and biosensor etc.; The neutral Application Areas of partly leading attitude has electroluminescent material, field effect transistor (FET), semiconductor material, polymkeric substance photovoltaic cell material etc.The application of coal-mine gas ventilator trunk, the application of mine exhaust outlet pipeline, accurate electrical instrument guard shield, gas line and the application of storage tank body, motor housing, other anti-electrostatic places.
The various experimental performance parameters of this powder coating:
The formed coating performance parameter of this powder coating
Claims (2)
- A high conduction, heavy anticorrosion, inhale the ripple powder coating, it is characterized in that: its raw material consists of component and parts by weight are respectively:The mixture that described Resins, epoxy is comprised of CYD014U Resins, epoxy, 907 Resins, epoxy, o-cresol formaldehyde epoxy resin, its part by weight is: CYD014U Resins, epoxy: 907 Resins, epoxy: o-cresol formaldehyde epoxy resin=300:150:35;Described conducting pigment is comprised of conductive titanium dioxide and graphitized carbon black, and its part by weight is: conductive titanium dioxide: graphitized carbon black=1:5;Described conductive filler material is the mixture of conduction barium sulfate, conduction zinc powder, electrically conductive polyaniline, and its part by weight is respectively: conduction barium sulfate: conduction zinc powder: electrically conductive polyaniline=25:5:1;The chemical molecular formula of described electrically conductive polyaniline is:
Polyaniline (PAn);Above-mentioned material is added to high speed mixer, behind dry blending, is added to forcing machine, carry out melting, mixing, cooling, compressing tablet at extrusion temperature 80-90 ℃, again through pulverizer pulverizing, classification, sieve, pack, namely become the powder coating final product. - 2. height according to claim 1 conducts electricity, weighs anticorrosion, suction ripple powder coating, and it is characterized in that: described solidifying agent is that glyoxal ethyline, dihydroxyphenyl propane are the linear resin of end group.
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| CN 201110295436 CN102408813B (en) | 2011-09-28 | 2011-09-28 | High-electric-conductivity heavy-anticorrosion wave-absorbing powder paint |
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| CN 201110295436 CN102408813B (en) | 2011-09-28 | 2011-09-28 | High-electric-conductivity heavy-anticorrosion wave-absorbing powder paint |
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| DE19958485A1 (en) * | 1999-12-04 | 2001-06-21 | Dupont Performance Coatings | Antistatic powder coating compositions and their use |
| CN101508866A (en) * | 2009-03-25 | 2009-08-19 | 杜邦华佳化工有限公司 | Conductive powder paint |
| CN101921534B (en) * | 2010-09-27 | 2012-08-08 | 天津翔盛粉末涂料有限公司 | Antibacterial powder coating for radiator |
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2011
- 2011-09-28 CN CN 201110295436 patent/CN102408813B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102408813A (en) | 2012-04-11 |
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