CN101892003A - Nano conductive anti-corrosive paint for earth screen - Google Patents
Nano conductive anti-corrosive paint for earth screen Download PDFInfo
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- CN101892003A CN101892003A CN2010102192120A CN201010219212A CN101892003A CN 101892003 A CN101892003 A CN 101892003A CN 2010102192120 A CN2010102192120 A CN 2010102192120A CN 201010219212 A CN201010219212 A CN 201010219212A CN 101892003 A CN101892003 A CN 101892003A
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- protective system
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- earth mat
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Abstract
The invention provides nano conductive anti-corrosive paint for an earth screen and a method for preparing the same. The paint comprises the following components in percentage by weight: 30 to 50 percent of hydrophilic group-containing epoxy resin film-forming matrix, 10 to 20 percent of nano magnetic ferric oxide, 10 to 30 percent of curing agent and 20 to 50 percent of inert diluent, and the total weight of all components is 100 percent. The anti-corrosive paint of the invention has quite strong adhesive force, so that the paint can be compactly adhered onto the surface of the earth screen so as to prevent the direct contact between the surface of the earth screen and soil and improve the anti-corrosive property of the earth screen; the anti-corrosive paint also has quite high surface shockproof capability; because hydroxyl groups and carboxyl groups exist in hydrophilic group-containing epoxy resin, the paint has hydrophilicity high enough for the paint to better contact surface soil, and consequently the flow-diffusion capability of the earth screen is greatly improved; in addition, the paint also has the advantages of quite high conductive capability, low cost, quite high practicability and high popularization and application value.
Description
Technical field
The present invention relates to the impregnating material field, specifically be meant a kind of conductive nano protective system that is used for earth mat and preparation method thereof.
Background technology
Earth mat is being brought into play important effect as an important safety measure that ensures the normal operation of power system in operation of power networks.But running environment is special in underground because earth mat is for a long time buried, and the corrosion through regular meeting is subjected to various different modes comprises micro-cell corrosion, biological corrosion and medium non-uniform corrosion etc.Therefore, strengthen anticorrosion very necessary to earth mat.
Power system mainly contains three kinds of the methods of sacrificial anode protection, impressed current method and conductive coating spray at the earth mat preserving method.Service experience shows that when the utilization sacrificial anode protection carried out the protection of earth mat, anode material adopted the stronger metal of magnalium isoreactivity more; it is higher not only to expend cost; and metal can cause that near the pH in soil of anode raises, and is unfavorable for environmental protection after galvanic corrosion enters soil.Anode has only certain work-ing life simultaneously, and changes also very inconvenience of anode.Adopt impressed current to carry out the earth mat protection, though easy and simple to handle, need expend a large amount of electric energy, improved the protection cost of earth mat.Conductive coating spray is to carry out the most frequently used technique means of earth mat rot-resistant present stage, has low cost, high-efficiency characteristics.
Be used for earth mat rot-resistant electrically conducting coating at present, conducting base mainly can be divided into two classes: a kind of is single or the blended metal-powder, and another is a carbon dust.For example be " a kind of preparation method of corrosion-resistant conductive coating " that publication number is to disclose a kind of technology that adopts the graphite carbon dust as conductive matrices in the Chinese patent of CN101434813 in denomination of invention.But carbon dust conductivity be not fine, usually do not reach the expectation effect in the practical application.Simultaneously, domestic most electrically conducting coating all adopts the hydrophobic type resin as the film forming matrix, because the earth mat Working environment is special, contact with underground humidity soil with high for a long time, adopt the film forming matrix of hydrophobic type, reduced earth mat and soil affinity, thereby made the diffusing stream ability drop of earth mat.
Summary of the invention
It is good to the purpose of this invention is to provide a kind of conductivity, and the diffusing good conductive nano protective system that is used for earth mat of stream ability of earth mat.
Another object of the present invention provides the preparation method of above-mentioned conductive nano protective system.
A kind of conductive nano protective system that is used for earth mat, the weight percent of its raw material is: contain Resins, epoxy film forming matrix 30-50%, nano magnetic iron oxide 10-20%, solidifying agent 10-30%, the inert diluent 20-50% of hydrophilic radical, wherein the weight percent sum of all components is 100%.
Described hydrophilic radical is carboxyl and hydroxyl.
The oxirane value of described Resins, epoxy film forming matrix is not more than 0.25.
The granular size of described nano magnetic iron oxide is between 1-100nm.
Described solidifying agent is polyamide-based or the cardanol compounds.
Described inert diluent is one or both mixtures in toluene, the propyl carbinol.
A kind of preparation method of above-mentioned conductive nano protective system: after weight percent is the Resins, epoxy film forming matrix heat fused that contains hydrophilic radical of 30-50%, adding weight percent again is the inert diluent dissolving of 20-50%, adding weight percent then in solution is the nano magnetic iron oxide of 10-20%, stirs and seals preservation; In use, adding weight percent again in above-mentioned mixed solution is that the solidifying agent of 10-30% promptly obtains the conductive nano protective system that can spray.
Described heat fused temperature is 60-90 ℃.
Described hydrophilic radical is carboxyl and hydroxyl; The granular size of described nano magnetic iron oxide is between 1-100nm; Described solidifying agent is polyamide-based or the cardanol compounds; Described inert diluent is one or both mixtures in toluene, the propyl carbinol.
The oxirane value of described Resins, epoxy film forming matrix is not more than 0.25.
Film forming matrix of the present invention is made up of Resins, epoxy, because the existence of intrinsic polarity hydroxyl and ehter bond in the Resins, epoxy molecular chain, protective system adhesive power of the present invention is strengthened greatly, thereby make coating stick to the ground net surface more densely, completely cut off the ground net surface and contacted, improved the antiseptic property of earth mat with the direct of soil.And the present invention has selected for use oxirane value to be not more than 0.25 Resins, epoxy, and protective system snappiness of the present invention is increased, and has promoted its surperficial shock-resistant ability.Contain the existence of hydroxyl and carboxyl in the Resins, epoxy internal structure of hydrophilic radical simultaneously, make coating of the present invention that wetting ability preferably be arranged, it can be contacted with upper soll layer better, thereby improved the diffusing stream ability of earth mat greatly substantially.And the conducting material in the protective system of the present invention has adopted nano level martial ethiops, because the level martial ethiops volume of nanometer is little, surface energy is bigger, very strong adsorptive power is arranged, thereby conducting medium is dispersed in the whole coating system better, improved the conductive capability of coating of the present invention.Raw material that the present invention uses is simple and easy to, and is with low cost, has very strong practicality.
Embodiment
Further specify the present invention below in conjunction with specific embodiment:
Embodiment 1
With weight percent is after 30% bisphenol A epoxide resin film forming matrix E-20 is heated to 60 ℃ of fusings, add weight percent again and be 35% xylene soluble, adding weight percent then and be 15% granular size in solution is the nano magnetic iron oxide of 100nm, stirs and seals preservation; In use, adding weight percent again in above-mentioned mixed solution is that 20% polyamide 6 50 promptly obtains the conductive nano protective system 1 that can spray.
Embodiment 2
With weight percent is after 40% bisphenol A epoxide resin film forming matrix E-12 is heated to 90 ℃ of fusings, add weight percent again and be 35% inert diluent dissolving, described inert diluent is that dimethylbenzene, propyl carbinol are according to 3: 7 blended mixing solutionss of weight ratio, adding weight percent then and be 10% granular size in solution is the nano magnetic iron oxide of 50nm, stirs and seals preservation; In use, adding weight percent again in above-mentioned mixed solution is that 15% cardanol promptly obtains the conductive nano protective system 2 that can spray.
Embodiment 3
With weight percent is after 50% bisphenol A epoxide resin film forming matrix E-21 is heated to 65 ℃ of fusings, add weight percent again and be 20% propyl carbinol dissolving, adding weight percent then and be 20% granular size in solution is the nano magnetic iron oxide of 1nm, stirs and seals preservation; In use, adding weight percent again in above-mentioned mixed solution is that 10% polyamide 6 51 promptly obtains the conductive nano protective system 3 that can spray.
Embodiment 4
With weight percent is after 30% novolac epoxy FM-15 film forming matrix is heated to 70 ℃ of fusings, add weight percent again and be 50% propyl carbinol dissolving, adding weight percent then and be 10% granular size in solution is the nano magnetic iron oxide of 80nm, stirs and seals preservation; In use, adding weight percent again in above-mentioned mixed solution is that 10% kymene 00 promptly obtains the conductive nano protective system 4 that can spray.
Embodiment 5
With weight percent is after 30% bisphenol A epoxide resin film forming matrix E-12 is heated to 90 ℃ of fusings, add weight percent again and be 25% xylene soluble, adding weight percent then and be 15% granular size in solution is the nano magnetic iron oxide of 80nm, stirs and seals preservation; In use, adding weight percent again in above-mentioned mixed solution is that 30% cardanol promptly obtains the conductive nano protective system 5 that can spray.
The conductive nano protective system that sprays that obtains in the foregoing description is detected according to national standard, and the result and the detection method that record are as shown in table 1:
Table 1
| Test item | Detection method | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Paint film appearance | GB1729-79 | Black is smooth | Black is smooth | Black is smooth | Black is smooth | Black is smooth |
| Viscosity (is coated with-4, S) | GB1723-79 | 70 | 75 | 72 | 68 | 65 |
| Time of drying (h) surface drying, do solid work | GB1728-78 | 2、20 | 2.5、22 | 3、22 | 2.5、21 | 3、23 |
| Sticking power (level) | GB1720-79 | 2 | 2 | 2 | 2 | 2 |
| Shock strength (J) | GB1732-79 | 4.0 | 4.2 | 4.5 | 4.5 | 4.1 |
| Hardness (fork) | GB1730-79 | 0.32 | 0.35 | 0.33 | 0.38 | 0.33 |
| (ρ is Ω cm v) for volume specific resistance | HG2-59-78 | 52 | 55 | 53 | 54 | 52 |
| Petrol-resistance | GB1734-79 | No change | No change | No change | No change | No change |
| Resistance to salt water | GB1763-79 | No change | No change | No change | No change | No change |
By table 1 as can be seen, conductive nano protective system of the present invention has reached the requirement of concerned countries standard.Protective system adhesive power of the present invention is very strong, so coating can stick to the ground net surface densely, has completely cut off the ground net surface and has contacted with the direct of soil, has improved the antiseptic property of earth mat.And the surperficial shock-resistant ability of protective system of the present invention is fine.Contain the existence of hydroxyl and carboxyl in the Resins, epoxy internal structure of hydrophilic radical simultaneously, make coating of the present invention that wetting ability preferably be arranged, it can be contacted with upper soll layer better, thereby improved the diffusing stream ability of earth mat greatly substantially.The conductive capability of protective system of the present invention is also fine in addition, can apply.
Claims (10)
1. conductive nano protective system that is used for earth mat, the weight percent of its raw material is: contain Resins, epoxy film forming matrix 30-50%, nano magnetic iron oxide 10-20%, solidifying agent 10-30%, the inert diluent 20-50% of hydrophilic radical, wherein the weight percent sum of all components is 100%.
2. the conductive nano protective system that is used for earth mat according to claim 1 is characterized in that: described hydrophilic radical is carboxyl and hydroxyl.
3. the conductive nano protective system that is used for earth mat according to claim 1 is characterized in that: the oxirane value of described Resins, epoxy film forming matrix is not more than 0.25.
4. the conductive nano protective system that is used for earth mat according to claim 1, it is characterized in that: the granular size of described nano magnetic iron oxide is between 1-100nm.
5. the conductive nano protective system that is used for earth mat according to claim 1 is characterized in that: described solidifying agent is polyamide-based or the cardanol compounds.
6. the conductive nano protective system that is used for earth mat according to claim 1 is characterized in that: described inert diluent is one or both mixtures in toluene, the propyl carbinol.
7. the preparation method of the described conductive nano protective system of claim 1, it is characterized in that: after weight percent is the Resins, epoxy film forming matrix heat fused that contains hydrophilic radical of 30-50%, adding weight percent again is the inert diluent dissolving of 20-50%, adding weight percent then in solution is the nano magnetic iron oxide of 10-20%, stirs and seals preservation; In use, adding weight percent again in above-mentioned mixed solution is that the solidifying agent of 10-30% promptly obtains the conductive nano protective system that can spray.
8. the preparation method of conductive nano protective system according to claim 7 is characterized in that: described heat fused temperature is 60-90 ℃.
9. the preparation method of conductive nano protective system according to claim 7 is characterized in that: described hydrophilic radical is carboxyl and hydroxyl; The granular size of described nano magnetic iron oxide is between 1-100nm; Described solidifying agent is polyamide-based or the cardanol compounds; Described inert diluent is one or both mixtures in toluene, the propyl carbinol.
10. the preparation method of conductive nano protective system according to claim 7 is characterized in that: the oxirane value of described Resins, epoxy film forming matrix is not more than 0.25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102192120A CN101892003A (en) | 2010-07-06 | 2010-07-06 | Nano conductive anti-corrosive paint for earth screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102192120A CN101892003A (en) | 2010-07-06 | 2010-07-06 | Nano conductive anti-corrosive paint for earth screen |
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| CN101892003A true CN101892003A (en) | 2010-11-24 |
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| CN2010102192120A Pending CN101892003A (en) | 2010-07-06 | 2010-07-06 | Nano conductive anti-corrosive paint for earth screen |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229778A (en) * | 2011-06-17 | 2011-11-02 | 山东大学 | Anticorrosion conductive coating for metal grounding network and application method thereof |
| CN105295666A (en) * | 2015-12-08 | 2016-02-03 | 吉林大学 | Soft magnetic conductive coating as well as preparation method and application thereof |
| CN106366827A (en) * | 2016-06-05 | 2017-02-01 | 浙江慈航海洋环保科技发展有限公司 | Magnetic nontoxic antifouling coating and preparation method thereof |
| CN107603407A (en) * | 2017-09-25 | 2018-01-19 | 常州市宇科不绣钢有限公司 | A kind of special-purpose aqueous anticorrosive paint of steel surface |
| CN108718010A (en) * | 2018-05-23 | 2018-10-30 | 陈乐昆 | A kind of earthed system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277798A (en) * | 1997-10-31 | 2000-12-20 | 美商纳克公司 | Electromagnetic shielding |
| CN1473895A (en) * | 2003-08-07 | 2004-02-11 | 武汉二十一世纪防腐科技有限公司 | Nano carbon anti-sorrosive conductive paint used for power system earthing net |
| CN101260273A (en) * | 2008-04-23 | 2008-09-10 | 海洋化工研究院 | Flexile epoxy anticorrosion paint |
| CN101372601A (en) * | 2008-10-17 | 2009-02-25 | 洛阳七维防腐工程材料有限公司 | Oil resistant (solvent), heatproof static conducting anti-corrosive paint and preparation thereof |
| CN101434813A (en) * | 2008-10-31 | 2009-05-20 | 河北省电力研究院 | Preparation of anti-corrosive conductive coating |
| CN101440251A (en) * | 2008-12-22 | 2009-05-27 | 石家庄市金达特种涂料有限公司 | Methanol-resistant, static-conducting and anti-corrosive paint |
-
2010
- 2010-07-06 CN CN2010102192120A patent/CN101892003A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277798A (en) * | 1997-10-31 | 2000-12-20 | 美商纳克公司 | Electromagnetic shielding |
| CN1473895A (en) * | 2003-08-07 | 2004-02-11 | 武汉二十一世纪防腐科技有限公司 | Nano carbon anti-sorrosive conductive paint used for power system earthing net |
| CN101260273A (en) * | 2008-04-23 | 2008-09-10 | 海洋化工研究院 | Flexile epoxy anticorrosion paint |
| CN101372601A (en) * | 2008-10-17 | 2009-02-25 | 洛阳七维防腐工程材料有限公司 | Oil resistant (solvent), heatproof static conducting anti-corrosive paint and preparation thereof |
| CN101434813A (en) * | 2008-10-31 | 2009-05-20 | 河北省电力研究院 | Preparation of anti-corrosive conductive coating |
| CN101440251A (en) * | 2008-12-22 | 2009-05-27 | 石家庄市金达特种涂料有限公司 | Methanol-resistant, static-conducting and anti-corrosive paint |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229778A (en) * | 2011-06-17 | 2011-11-02 | 山东大学 | Anticorrosion conductive coating for metal grounding network and application method thereof |
| CN102229778B (en) * | 2011-06-17 | 2012-10-10 | 山东大学 | Anticorrosion conductive coating for metal grounding network and application method thereof |
| CN105295666A (en) * | 2015-12-08 | 2016-02-03 | 吉林大学 | Soft magnetic conductive coating as well as preparation method and application thereof |
| CN106366827A (en) * | 2016-06-05 | 2017-02-01 | 浙江慈航海洋环保科技发展有限公司 | Magnetic nontoxic antifouling coating and preparation method thereof |
| CN107603407A (en) * | 2017-09-25 | 2018-01-19 | 常州市宇科不绣钢有限公司 | A kind of special-purpose aqueous anticorrosive paint of steel surface |
| CN108718010A (en) * | 2018-05-23 | 2018-10-30 | 陈乐昆 | A kind of earthed system |
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Application publication date: 20101124 |