CN105273580A - Electromagnetic radiation-resisting coating and preparation method thereof - Google Patents
Electromagnetic radiation-resisting coating and preparation method thereof Download PDFInfo
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- 239000011248 coating agent Substances 0.000 title claims abstract description 50
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- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 11
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
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- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 claims description 2
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- MOVRNJGDXREIBM-UHFFFAOYSA-N aid-1 Chemical compound O=C1NC(=O)C(C)=CN1C1OC(COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C(NC(=O)C(C)=C2)=O)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C(NC(=O)C(C)=C2)=O)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C(NC(=O)C(C)=C2)=O)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)COP(O)(=O)OC2C(OC(C2)N2C3=C(C(NC(N)=N3)=O)N=C2)CO)C(O)C1 MOVRNJGDXREIBM-UHFFFAOYSA-N 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
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- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
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- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an electromagnetic radiation-resisting coating which comprises a part A, a part B and a part C, wherein the part A comprises the following components by weight percent: 20-30% of hyperbranched epoxy resin, 2-3% of urea resin, 1-1.5% of coalescing agent, 0.5-1% of adhesion promoter, 0.1-0.2% of surface active agent, 0.1-0.2% of flowing deformation auxiliaries, 0.05-0.1% of coupling reagents and 60-70% of electromagnetic wave absorbents; the part B comprises the following component: special epoxy hardener; the special epoxy hardener comprises the following components by weight percent: 50% of polyimide, 35% of xylene and 15% of n-butyl alcohol; the part C comprises epoxy diluent; the quantity ratio of the part A to part B to part C is (9-19):1:(2-4). The electromagnetic radiation-resisting coating prepared according to the invention has various excellent physical and chemical properties of the coating and also has an electromagnetic radiation-resisting function.
Description
Technical field
The present invention relates to chemical industry, field of material technology, particularly relate to a kind of anti-electromagnetic-radiation coating.
Background technology
Along with the raising of people's living standard, communication technology development, incident is the continuous expansion of network of communication, and communication base station is seen everywhere, and is often built in populated area more.The impact of the electromagnetic radiation produced by communication base station on surrounding enviroment and human body more receives much concern.Electromagenetic wave radiation has become one the fourth-largest pollution source after topsoil, water pollutions, noise pollution.The electromagnetic interference (EMI) that hertzian wave causes and electromagnetic compatibility (EMC) problem not only can disturb electronic electric equipment, also can bring serious threat to HUMAN HEALTH.Electromagnetic radiation environment protection work has become one of focus of field of environment protection research, solves the effective approach of electromagnetic pollution in the urgent need to one.
At present, effectively suppress electromagnetic radiation, leakage, interference and improve electromagnetic environment, mainly based on electromagnetic shielding.But electromagnetic shielding fundamentally can not weaken, eliminate electromagnetic radiation.Only having use electromagnetic-absorbing coating, is that the energy (as mechanical energy, electric energy and heat energy) of other form just can reach consumption electromagnetic radiation object by electromagnetic energy.Therefore, the task of top priority is exactly develop a kind of anti-electromagnetic-radiation coating can eliminating electromagnetic pollution high specific surface area again.
China Patent No. is separately had to be: 201110179825.0, publication date is 2012.12.05, disclose a kind of antiradar coatings and preparation method thereof, described antiradar coatings contains CNT (carbon nano-tube), CNT (carbon nano-tube) dispersion agent, graphitized carbon black, epoxy resin, epoxy resin diluent and epoxy curing agent, and described CNT (carbon nano-tube) accounts for the 5%-20% of described epoxy resin quality.Use this invention antiradar coatings, can not only meet the requirement of absorption, compatible excellent and bandwidth to greatest extent, the electromagnetic parameter that can also improve antiradar coatings is alternative, makes the range of application of antiradar coatings wider.But this patent formula does not announce its absorption of electromagnetic wave attenuating, and field of employment and the unknown of corresponding absorption frequency range.
In addition China Patent No. is: 201310194847.3, publication date 2013.09.04, disclose suction ripple powder/epoxy electromagnetism interference coated material of a kind of 0.6 ~ 18GHz frequency range and preparation method thereof, the suction ripple powder of specific band and epoxy resin are obtained by dispersion grinding by described invention inhales ripple powder/epoxy resin slurry, again with nonessential modified resin, nonessential color stuffing, nonessential coatings additive(s) stirs lower blended, film-forming at room temperature or 80 DEG C, the suction ripple powder/epoxy electromagnetism interference coated material of 0.6 ~ 18GHz can be obtained to the absorption of electromagnetic wave more than 85% of 0.6 ~ 18GHz frequency range, corrosion resistance and good, mechanical property is high, there is good workability, have long-acting electromagnetism interference effect.But program complex process, the absorption agent of use is than great, and its assimilation effect is good not enough.
Summary of the invention
For communication base station electromagnetic radiation, in order to make up the deficiencies in the prior art, the invention provides and provide a kind of anti-electromagnetic-radiation coating, this coating not only possesses excellent physical and chemical performance, has the electromagnetic radiation function that attenuation by absorption is efficiently produced by communication base station simultaneously.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of anti-electromagnetic-radiation coating, comprise part A and part B and C part, it is characterized in that: part A comprises the component of following weight percent: hyperbranched epoxy resin 20 ~ 30%, urea-formaldehyde resin 2 ~ 3%, film coalescence aid 1 ~ 1.5%, adhesion promoter 0.5 ~ 1%, tensio-active agent 0.1 ~ 0.2%, auxiliary rheological agents 0.1 ~ 0.2%, coupling agent 0.05 ~ 0.1%, radio-radar absorber 60 ~ 70%;
The component that part B comprises: specific epoxy solidifying agent; Described specific epoxy curing agent component is polyimide 50%, dimethylbenzene 35%, propyl carbinol 15%;
The component that C part comprises: epoxide diluent;
The quality proportioning of part A and part B and C part is: 9-19:1:2-4.
The preferred film coalescence aid of the present invention is propylene glycol monomethyl ether.
The preferred adhesion promoter of the present invention is Degussa LTW, and one is not containing silicone nonionic compound.
Preferred surfactant of the present invention is polyoxyethylene nonylphenol ether, a kind of nonionogenic tenside, is nonyl phenol and ethylene oxide adduct.
The preferred auxiliary rheological agents of the present invention is this SD-2 of hamming, organic bentonite.
The preferred coupling agent of the present invention particularly preferably Silane coupling agent KH550.
The preferred flaky carbonyl iron powder of the preferred radio-radar absorber of the present invention, horizontal mean sizes about 50 μm, gauge < 2 μm.
The preferred epoxide diluent component of the present invention is dimethylbenzene 70%, propyl carbinol 30%.
A preparation method for anti-electromagnetic-radiation coating, comprises the steps:
(1) hyperbranched epoxy resin is added in container, after dispersed with stirring, more successively add urea-formaldehyde resin, film coalescence aid, adhesion promoter, tensio-active agent, auxiliary rheological agents, coupling agent, and interval is stirred, and is mixed with base paint;
(2) get base paint prepared by (1) step, added by radio-radar absorber, uniformly coating after dispersion stirring 0.5 ~ 0.8h, is referred to as part A;
(3) polyimide curing agent is added in container, add dimethylbenzene and propyl carbinol successively, be stirred to rotating speed 400rpm in dispersion machine and mix, be referred to as part B;
(4) by component A uniform coating, add B component coating, be stirred to rotating speed 600rpm in dispersion machine and mix, more slowly add epoxide diluent, adjust viscosity to 26 ~ 30s, continue dispersion 10 ~ 15min, become anti-electromagnetic-radiation coating.
The present invention has the following advantages:
The anti-electromagnetic-radiation coating that the present invention obtains has following outstanding advantages compared with existing like product:
(1) coating that prepared by the present invention adopts the method for absorption-type anti-electromagnetic-radiation, can directly the hertzian wave of incidence is converted into the energy of other form to greatest extent and consume, can not produce secondary pollution, fundamentally can eliminate electromagnetic pollution.The effect absorbing 0.5 ~ 3.5GHz frequency range incident electromagnetic wave reaches 90%(reflection loss value≤-10dB) more than (Performance Detection is shown in Fig. 1).Greatly can improve and use communication base station periphery electromagnetic environment.
(2) filler that the anti-electromagnetic-radiation coating that prepared by the present invention uses is flaky carbonyl iron powder, but not conventional filler.Not only there is electromagnetic radiation resisting function, possess the due feature of filler itself simultaneously, make coating have large arch dam, the advantages such as low VOC content.
Accompanying drawing explanation
The absorbing property of Fig. 1 functional coating prepared by communication base station anti-electromagnetic-radiation coating of the present invention.
Embodiment
1, anti-electromagnetic-radiation dope preparing process of the present invention is:
(1) 20 ~ 30 parts of hyperbranched epoxy resins are added in container, electric blender is used to disperse for some time with certain rotating speed, successively add 2 ~ 3 parts of urea-formaldehyde resins again, 1 ~ 1.5 part of film coalescence aid, 0.5 ~ 1 part of adhesion promoter, 0.1 ~ 0.2 part of tensio-active agent, 0.1 ~ 0.2 part of auxiliary rheological agents, 0.05 ~ 0.1 part of coupling agent.Often kind of auxiliary agent all slowly adds, and lower a kind of auxiliary agent is added at interval again after stirring for some time.Be mixed with base paint, as the body material of absorption agent.
(2) 30 ~ 40 parts of 1(1 are got) the base paint prepared of item, use electric stirring to disperse for some time with suitable rotational speed, 60 ~ 70 parts of radio-radar absorbers are slowly added, and slowly improves rotating speed, optionally can add a small amount of thinner again.Uniformly coating after dispersion stirring 0.5 ~ 0.8h, is referred to as part A.Inspection declaration, qualified rear use 300 order filter screen filtration are packed.
(3) 50 parts of polyimide curing agent are added in container, add 35 parts of dimethylbenzene and 15 parts of propyl carbinols successively, be stirred to rotating speed 400rpm in dispersion machine and mix, be referred to as part B.Inspection declaration, qualified rear use 300 order filter screen filtration are packed.
2, anti-electromagnetic-radiation coating application process of the present invention is:
(1) by 95 parts of 1(2) component A uniform coating prepared by item, add 5 parts of 1(3) B component coating prepared by item, be stirred to rotating speed 600rpm in dispersion machine and mix.Slowly add 20 parts of diluents (C part) again, be adjusted to viscosity to 26 ~ 30s, continue dispersion 10 ~ 15min, become anti-electromagnetic-radiation coating.
(2) aerial spraying or the mode of brushing is adopted by 2(1) paint prepared of item is in communication base station room or the protected body surface of periphery; each coating thickness controls at 0.2 ~ 0.3mm; then at room temperature spontaneous curing is placed; continue lower one circulating process again; spray or brush 3 ~ 4 times, total thickness is 1.5 ~ 2.0mm about.Final obtained electromagnetic radiation resisting function coating.
embodiment 2
1, anti-electromagnetic-radiation dope preparing process of the present invention is:
(1) 20 ~ 25 parts of hyperbranched epoxy resins are added in container, electric blender is used to disperse for some time with certain rotating speed, successively 5 ~ 8 parts of urea-formaldehyde resins again, 1 ~ 1.5 part of film coalescence aid, 0.5 ~ 1 part of adhesion promoter, 0.1 ~ 0.2 part of tensio-active agent, 0.1 ~ 0.2 part of auxiliary rheological agents, 0.05 ~ 0.1 part of coupling agent.Often kind of auxiliary agent all slowly adds, and lower a kind of auxiliary agent is added at interval again after stirring for some time.Be mixed with base paint, as the body material of absorption agent.
(2) get the base paint of 25 ~ 35 parts the 1st preparation, use electric stirring to disperse for some time with suitable rotational speed, 65 ~ 75 parts of radio-radar absorbers are slowly added, and slowly improves rotating speed, optionally can add a small amount of thinner again.Uniformly coating after dispersion stirring 0.5 ~ 0.8h, is referred to as part A.Inspection declaration, qualified rear use 300 order filter screen filtration are packed.
(3) 50 parts of polyimide curing agent are added in container, add 35 parts of dimethylbenzene and 15 parts of propyl carbinols successively, be stirred to rotating speed 400rpm in dispersion machine and mix, be referred to as part B.Inspection declaration, qualified rear use 300 order filter screen filtration are packed.
2, anti-electromagnetic-radiation coating application process of the present invention is:
(1) by 90 parts of 1(2) component A uniform coating prepared by item, add 10 parts of 1(3) B component coating prepared by item, be stirred to rotating speed 600rpm in dispersion machine and mix.Slowly add 20g diluent (C part) again, be adjusted to viscosity to 26 ~ 30s, continue dispersion 10 ~ 15min, become anti-electromagnetic-radiation coating.
(2) aerial spraying or the mode of brushing is adopted by 2(1) paint prepared of item is in communication base station room or the protected body surface of periphery; each coating thickness controls at 0.2 ~ 0.3mm; then at room temperature spontaneous curing is placed; continue lower one circulating process again; spray or brush 3 ~ 4 times, total thickness is 1.5 ~ 2.0mm about.Final obtained electromagnetic radiation resisting function coating.
As shown in Figure 1, test sample plate in the 0.5-3.5GHz frequency range of incident electromagnetic wave, after being coated with the coating of patent of the present invention, its to the reflection loss value of incident electromagnetic wave all at≤more than-10dB.
Claims (9)
1. an anti-electromagnetic-radiation coating, comprise part A and part B and C part, it is characterized in that: part A comprises the component of following weight percent: hyperbranched epoxy resin 20 ~ 30%, urea-formaldehyde resin 2 ~ 3%, film coalescence aid 1 ~ 1.5%, adhesion promoter 0.5 ~ 1%, tensio-active agent 0.1 ~ 0.2%, auxiliary rheological agents 0.1 ~ 0.2%, coupling agent 0.05 ~ 0.1%, radio-radar absorber 60 ~ 70%;
The component that part B comprises: specific epoxy solidifying agent; Described specific epoxy curing agent component is polyimide 50%, dimethylbenzene 35%, propyl carbinol 15%;
The component that C part comprises: epoxide diluent;
The quality proportioning of part A and part B and C part is: 9-19:1:2-4.
2. a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that: described film coalescence aid is propylene glycol monomethyl ether.
3. a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that: described adhesion promoter is Degussa LTW.
4. a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that: described tensio-active agent is polyoxyethylene nonylphenol ether.
5. a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that: described auxiliary rheological agents is this SD-2 of hamming, organic bentonite.
6. a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that: described coupling agent particularly preferably Silane coupling agent KH550.
7. a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that: the preferred flaky carbonyl iron powder of described radio-radar absorber, horizontal mean sizes about 50 μm, gauge < 2 μm.
8. a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that: described epoxide diluent component is dimethylbenzene 70%, propyl carbinol 30%.
9. the preparation method of a kind of anti-electromagnetic-radiation coating according to claim 1, is characterized in that, comprise the steps:
(1) hyperbranched epoxy resin is added in container, after dispersed with stirring, more successively add urea-formaldehyde resin, film coalescence aid, adhesion promoter, tensio-active agent, auxiliary rheological agents, coupling agent, and interval is stirred, and is mixed with base paint;
(2) get base paint prepared by (1) step, added by radio-radar absorber, uniformly coating after dispersion stirring 0.5 ~ 0.8h, is referred to as part A;
(3) polyimide curing agent is added in container, add dimethylbenzene and propyl carbinol successively, be stirred to rotating speed 400rpm in dispersion machine and mix, be referred to as part B;
(4) by component A uniform coating, add B component coating, be stirred to rotating speed 600rpm in dispersion machine and mix, more slowly add epoxide diluent, adjust viscosity to 26 ~ 30s, continue dispersion 10 ~ 15min, become anti-electromagnetic-radiation coating.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106189689A (en) * | 2016-07-19 | 2016-12-07 | 马晓洁 | A kind of graphene-based anti-electromagnetic-radiation bicomponent epoxy resin coating |
| CN106752692A (en) * | 2016-11-30 | 2017-05-31 | 航天科工武汉磁电有限责任公司 | A kind of electromagnetic protection coating and preparation method thereof |
| CN109517559A (en) * | 2018-10-30 | 2019-03-26 | 成都飞机工业（集团）有限责任公司 | A kind of rapid curing suction wave edge sealing adhesive |
| CN109517558A (en) * | 2018-10-30 | 2019-03-26 | 成都飞机工业（集团）有限责任公司 | A kind of rapid curing inhales the preparation method of wave edge sealing adhesive |
| CN109957275A (en) * | 2019-03-08 | 2019-07-02 | 武汉理工大学 | The method and antiradar coatings of pieces of absorbent agent spontaneous orientation under the conditions of high packing ratio |
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