• Title, Summary, Keyword: Paint solvents

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VOC Emissions from Automotive Painting and Their Control: A Review

  • Kim, Byung-R.
    • Environmental Engineering Research
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    • v.16 no.1
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    • pp.1-9
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    • 2011
  • During automotive painting, volatile organic compounds (VOCs) associated with the paint solvents are emitted to the atmosphere. Most VOC emissions come from spraying operations via the use of solvent-based paints, as the spraybooth air picks up gaseous solvent compounds and overspray paint materials. The VOCs consist of aromatic and aliphatic hydrocarbons, ketones, esters, alcohols, and glycolethers. Most VOCs (some hydrophilic VOCs are captured and retained in the water.) are captured by an adsorption system and thermally oxidized. In this paper, the processes involved in automotive painting and in VOC control are reviewed. The topics include: painting operations (briefly), the nature of VOCs, VOC-control processes (adsorption, absorption, biological removal, and thermal oxidation) and energy recovery from VOCs using a fuel reformer and a fuel cell, and the beneficial use of paint sludge.

The Analysis on the VOCs Contents and Ozone Production Contribution of A Marine Paint in Korea (국내 선박용 도료의 VOCs 함량분포 및 오존생성기여도에 관한 연구)

  • Kim, Su Min;Lee, Young Soo;Kang, Kyoung Hee;Yoo, Kyung Seun
    • Journal of Korean Society for Atmospheric Environment
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    • v.30 no.6
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    • pp.569-576
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    • 2014
  • In this research, a few paints in the shipyard were selected and analyzed for the component and ozone production in marine paint using TVOC and GC/FID, ozone generation index (MIR, POCP) to establish measures of $VOC_s$ effectively. The concentrations of TVOC ranged between approximately 300~400 g/L and 400~500 g/L, respectively and these showed 37% of whole. Our results indicated that the main constituents of marine paints were m,p,oxylene (49%), ethyl benzene (10%), toluene (8%) and 2-propanol (5%). It was also found that xylene concentration have relatively higher impact on ozone generation. The types of paints were also investigated for their potentials. The biggest contributor was the 1 Pack Finish paint. The rest is, in their contributing order, 1 Pack Finish paint, 2 pack Finish paint, Anti-fouling paint, 2 Pack A/C paint, Ballast paint and 1 Pack A/C paint.

Adhesive characteristics of water-paint and silane adhesive mixture (수성페인트-실란접착제 혼합물의 접착특성)

  • HAN, Hyun Kak
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.8
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    • pp.5721-5727
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    • 2015
  • Paint must be resistant to the wear and tear of the atmosphere and should maintain its color and finish for a long time. The solvents of paints were organic solvent and water, common artificial source of VOCs(Volatile organic Solvent) include organic solvent. Using of organic solvent paint was decreased in the interior parts of automotive, exterior parts were still used organic solvent paint. Adhesive strength of water-paint was poor to compare with organic solvent paint and peeled off from the base materials, it was big quality problem. In this study, adhesive characteristics of water-paint and silane mixture was investigated. To improve adhesive strength of water-paint, it was necessary to mixing of adhesive material. Adhesive strength was measured using UTM(Universal Test Instrument) by ASTM D1002 and Peeling off condition was by ASTM D3359. Optimal mixing condition of water-paint and silane adhesive were $25^{\circ}C$, 500rpm, 20min., concentration of silane adhesive was 5 wt%.

Developent of a new technique removing paint from recycled car-bumper (기계적 방법과 화학적 방법을 혼합한 폐범퍼 도장 제거 기술 개발)

  • Cruz, Heidy;Son, Younggon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.5
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    • pp.3298-3303
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    • 2014
  • In order to recycle the waste bumper, techniques removing coated paint on a bumper is crucial. Chemical methods are known to be much more effective in removing the paint compared to physical methods. However, the chemical methods generally use toxic solvents and consequently cause environmental pollution. In this study, we tested a new method which combines the chemical and physical method to reduce the amount of solvent and increase the paint removal efficiency. We found that mechanical stirring increases the paint removal efficiency in soaking stage of solvent. When solid particles as a stress transfer media are incorporated into the solvent and high mechanical stirring is applied, the paint removal efficiency is very high. It was proved that the combined method can accomplish high level of the paint removal efficiency maintaining low amount of solvent consumed.

유기용제노출사업장의 역학조사를 위한 기초연구(I)

  • Park Hui-Ryeon;Lee Nae-U;Choe Jae-Uk
    • Proceedings of the Korean Institute of Industrial Safety Conference
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    • pp.303-308
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    • 2001
  • Various organic solvents are most commonly using material in various factories, for examples, paint producting process and other industries, actually most of them are toxic materials, If many kinds of organic chemicals are concurrently exposed to workplace, toxidities can be influenced as additive effect or synergistic effect.(omitted)

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Reconstruction of High-Pressure Paint Gun Injection Injured Finger Using Free Flaps with T-Shaped Pedicles and Multiple Venous Anastomoses

  • Lee, Jun Beom;Choi, Hwan Jun;Kim, Jun Hyuk;Cheon, Nam Ju;Lee, Young Man
    • Archives of Reconstructive Microsurgery
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    • v.24 no.2
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    • pp.75-78
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    • 2015
  • High-pressure (HP) injection injury to the upper extremity often causes a very serious clinical problem, leading to poor outcomes, including amputation, so that a true surgical emergency is required. The outcomes can be improved with emergent wide surgical debridement. However the diagnosis of these injuries is often delayed due to underestimated evaluation at first appearance and lack of common knowledge of the seriousness of this injury. The type and pressure of the infecting material is an important factor in prognosis and organic solvents infected pressure injury can cause poor outcome and increased amputation rate. In this case, we report on reconstruction of HP oil-based paint injection injuries of the finger using T-shaped pedicles and multiple venous anastomoses. In this concept, arterial flow can be maintained by the reverse flow of distal anastomosis when there is difficulty with the proximal anastomosis. And venous flow can be preserved by deep and superficial vein anastomosis. This concept has various advantages including preserving patency of the pedicle in chronic vasculopathy or trauma cases and maintaining the arterial flow by the reverse flow of distal anastomosis and can improve the free flap survival by a two vascular anastomosis system.

Investigation of toxic organic solvent exposure in work places (작업장에서의 유해 유기용제 폭로에 관한 연구)

  • Jo, Young Min;Kang, Sang Wan;Oh, Jong Min
    • Journal of Environmental Impact Assessment
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    • v.9 no.1
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    • pp.75-86
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    • 2000
  • The purpose of this work was to document the conditions regarding organic solvent exposure to the workers in paint industry. Air concentrations of organic solvents were measured by passive personal samplers and analyzed by a gas chromatography. Urine samples for hippuric test were also taken from 330 workers who have worked at seven domestic factories for more than two years. Amongst 25 organic elements detected in the indoor environment of working places, toluene was the most common element, and methanol showed the highest mean concentration(18.2ppm). A few elements including methylethyl ketone and toluene partially exceeded the Korean Permissible Exposure Limit. A lack of environmental facilities such as exhaust ventilation, automatic cleaning system, and personal safety devices at present work plaus brings about various occupational diseases.

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Dispersion Characteristics of Surface-Modified Graphene Nanoplate in Organic Solvent for Development of Graphene / Epoxy Paint to Protect Concrete (콘크리트 보호용 그래핀/에폭시 도료개발을 위해 표면개질한 그래핀 나노플레이트의 유기용매 분산특성)

  • Seo, Won-Woo;Kim, Gyu-Yong;Yoon, Min-Ho;Lee, Sang-Kyu;Hwang, Eui Chul;Son, Min-Jae
    • Proceedings of the Korean Institute of Building Construction Conference
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    • pp.244-245
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    • 2017
  • This study aims to develop high durability graphene / epoxy paint for durability improvement of construction structure. For the development of graphene / epoxy coatings, first, graphene must remain stable in the polymer. Second, the integrity of graphene and polymer should be ensured. Accordingly, in order to obtain dispersibility, surface modification of graphene nanoplate(GnP) with CH and COOH functional groups and its dispersibility in organic solvents were investigated. Also, Fourier Transform Infrared Spectroscopy(FT-IR) analysis and Atomic Force Microscope(AFM) analysis were performed to confirm whether the functional groups were synthesized by surface modification. As a result, FT-IR and AFM analysis did not confirm the surface modification, but GnP was found to be stable when dispersed in an organic solvent.

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Exposure Characteristics of Construction Painters to Organic Solvents

  • Park, Hyunhee;Park, Hae Dong;Jang, Jae-Kil
    • Safety and Health at Work
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    • v.7 no.1
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    • pp.63-71
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    • 2016
  • Background: Construction painters have not been studied well in terms of their hazards exposure. The objective of this study was to evaluate the exposure levels of total volatile organic compounds (TVOCs) for painters in the construction industry. Methods: Activity-specific personal air samplings were carried out in three waterproofing activities [polyurethane (PU), asphalt, and cement mortar] and three painting activities (epoxy, oil based, and water based) by using organic-vapor-monitor passive-sampling devices. Gas chromatograph with flame ionization detector could be used for identifying and quantifying individual organic chemicals. The levels of TVOCs, by summing up 15 targeted substances, were expressed in exposure-index (EI) values. Results: As arithmetic means in the order of concentration levels, the EIs of TVOCs in waterproofing works were 10.77, 2.42, 1.78, 1.68, 0.47, 0.07, and none detected (ND) for indoor PU-primer task, outdoor PU-primer task, outdoor PU-resin task, indoor PU-resin task, asphalt-primer task, asphalt-adhesive task, and cement-mortar task, respectively. The highest EI for painting works was 5.61 for indoor epoxyprimer task, followed by indoor epoxy-resin task (2.03), outdoor oil-based-spray-paint task (1.65), outdoor water-based-paint task (0.66), and indoor oil-based-paint task (0.15). Assuming that the operations were carried out continuously for 8 hours without breaks and by using the arithmetic means of EIs for each of the 12 tasks in this study, 58.3% (7 out of 12) exceeded the exposure limit of 100% (EI > 1.0), while 8.3% (1 out of 12) was in 50e100% of exposure limit (0.5 > EI > 1.0), and 4 tasks out of 12 were located in less than 50% of the limit range (EI < 0.5). Conclusion: From this study, we recognized that construction painters are exposed to various solvents, including carcinogens and reproductive toxins, and the levels of TVOC concentration in many of the painting tasks exceeded the exposure limits. Construction workers need to be protected from chemical agents during their painting works by using personal protective devices and/or work practice measures. Additional studies should focus on the exposure assessment of other hazards for construction workers, in order to identify high-risk tasks and to improve hazardous work environments.

Study of an analytical method for determining organotin compounds in anti-fouling paints (방오페인트에 함유된 유기주석물질 분석방법 연구)

  • Kim, C.S.;Lee, S.E.;Yoon, J.Y.;Park, I.N.;Kim, M.J.;Kim, I.K.;Oh, H.J.
    • Proceedings of KOSOMES biannual meeting
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    • pp.35-41
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    • 2007
  • An International Convention on the control of harmful anti-fouling system on ships(AFS Convention) was adopted on 5 October 2001 at Diplomatic Conference in London, and is expected to be presently effectuated with ratification of more than 25-member nations possessing about 25% of total world tonnage. This convention regulates the operation of harmful anti-fouling system and especially prohibits the use of organotin compounds contained in anti-fouling paint. Organotin compounds have a tendency to be easily extracted by specific solvents and have high polarity and low volatility as specific characteristics. This drives us to attempt of going through the process named derivatization that is required in analysis using a gas chromatography(GC). This study was conducted to determine the proper pre-treatment method, ethylation in comparison with hydridization on the analysis of tributyltin in organotin compounds and to verify the application of the method through the experimental analysis practically used anti-fouling paint and painted layer sample of the served ship.

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