A new concept for anti-fouling paint for Yachts

Eva Wallstroem, Henrik T. Jespersen, Kjeld Schaumburg

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    Resumé

    It is shown to be possible to develop yacht paint with a reduction of 70% of biocide, without pigments/fillers (cuprous oxide and zinc oxide) that may cause long-term adverse effects in the aquatic environment, and to obtain application and usage properties that match present commercial anti-fouling products for yachts. To be able to reduce the amount of biocide, in this case zinc pyrithione, it is necessary to have control over the amount of biocide present in the surface layer. The control is achieved by encapsulating the biocide in a silica gel. The silica gel is dispersed together with pigments and fillers in the paint. The gel contributes to the polishing properties, where the gel particles are worn down throughout the polishing process. When a gel particle is opened by wear the biocide will be effective on the coating surface. It is also shown that zinc pyrithione is more efficient when it is encapsulated in a gel compared to a situation where it is not. This conclusion is based on the fact that the gel swells when exposed to water, and therefore the leach of zinc pyrithione is initially delayed and the biocide may start to solubilise and degrade. The result is an anti-fouling product that is formulated without introducing new compounds and with reduced amount of zinc pyrithione (1/3). Finally, it is shown that it is possible to make antifouling paint for yachts without zinc or copper based pigments by using other traditional pigments and fillers, which have no known long-term adverse effect in the aquatic environment, in combination with the gel. The results are documented in raft tests. (C) 2011 Elsevier B.V. All rights reserved.
    OriginalsprogEngelsk
    TidsskriftProgress in Organic Coatings
    Vol/bind72
    Udgave nummer1-2
    Sider (fra-til)109-114
    ISSN0300-9440
    DOI
    StatusUdgivet - 2011

    Citer dette

    Wallstroem, Eva ; Jespersen, Henrik T. ; Schaumburg, Kjeld. / A new concept for anti-fouling paint for Yachts. I: Progress in Organic Coatings. 2011 ; Bind 72, Nr. 1-2. s. 109-114.
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    title = "A new concept for anti-fouling paint for Yachts",
    abstract = "It is shown to be possible to develop yacht paint with a reduction of 70{\%} of biocide, without pigments/fillers (cuprous oxide and zinc oxide) that may cause long-term adverse effects in the aquatic environment, and to obtain application and usage properties that match present commercial anti-fouling products for yachts. To be able to reduce the amount of biocide, in this case zinc pyrithione, it is necessary to have control over the amount of biocide present in the surface layer. The control is achieved by encapsulating the biocide in a silica gel. The silica gel is dispersed together with pigments and fillers in the paint. The gel contributes to the polishing properties, where the gel particles are worn down throughout the polishing process. When a gel particle is opened by wear the biocide will be effective on the coating surface. It is also shown that zinc pyrithione is more efficient when it is encapsulated in a gel compared to a situation where it is not. This conclusion is based on the fact that the gel swells when exposed to water, and therefore the leach of zinc pyrithione is initially delayed and the biocide may start to solubilise and degrade. The result is an anti-fouling product that is formulated without introducing new compounds and with reduced amount of zinc pyrithione (1/3). Finally, it is shown that it is possible to make antifouling paint for yachts without zinc or copper based pigments by using other traditional pigments and fillers, which have no known long-term adverse effect in the aquatic environment, in combination with the gel. The results are documented in raft tests. (C) 2011 Elsevier B.V. All rights reserved.",
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    A new concept for anti-fouling paint for Yachts. / Wallstroem, Eva; Jespersen, Henrik T.; Schaumburg, Kjeld.

    I: Progress in Organic Coatings, Bind 72, Nr. 1-2, 2011, s. 109-114.

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    TY - JOUR

    T1 - A new concept for anti-fouling paint for Yachts

    AU - Wallstroem, Eva

    AU - Jespersen, Henrik T.

    AU - Schaumburg, Kjeld

    PY - 2011

    Y1 - 2011

    N2 - It is shown to be possible to develop yacht paint with a reduction of 70% of biocide, without pigments/fillers (cuprous oxide and zinc oxide) that may cause long-term adverse effects in the aquatic environment, and to obtain application and usage properties that match present commercial anti-fouling products for yachts. To be able to reduce the amount of biocide, in this case zinc pyrithione, it is necessary to have control over the amount of biocide present in the surface layer. The control is achieved by encapsulating the biocide in a silica gel. The silica gel is dispersed together with pigments and fillers in the paint. The gel contributes to the polishing properties, where the gel particles are worn down throughout the polishing process. When a gel particle is opened by wear the biocide will be effective on the coating surface. It is also shown that zinc pyrithione is more efficient when it is encapsulated in a gel compared to a situation where it is not. This conclusion is based on the fact that the gel swells when exposed to water, and therefore the leach of zinc pyrithione is initially delayed and the biocide may start to solubilise and degrade. The result is an anti-fouling product that is formulated without introducing new compounds and with reduced amount of zinc pyrithione (1/3). Finally, it is shown that it is possible to make antifouling paint for yachts without zinc or copper based pigments by using other traditional pigments and fillers, which have no known long-term adverse effect in the aquatic environment, in combination with the gel. The results are documented in raft tests. (C) 2011 Elsevier B.V. All rights reserved.

    AB - It is shown to be possible to develop yacht paint with a reduction of 70% of biocide, without pigments/fillers (cuprous oxide and zinc oxide) that may cause long-term adverse effects in the aquatic environment, and to obtain application and usage properties that match present commercial anti-fouling products for yachts. To be able to reduce the amount of biocide, in this case zinc pyrithione, it is necessary to have control over the amount of biocide present in the surface layer. The control is achieved by encapsulating the biocide in a silica gel. The silica gel is dispersed together with pigments and fillers in the paint. The gel contributes to the polishing properties, where the gel particles are worn down throughout the polishing process. When a gel particle is opened by wear the biocide will be effective on the coating surface. It is also shown that zinc pyrithione is more efficient when it is encapsulated in a gel compared to a situation where it is not. This conclusion is based on the fact that the gel swells when exposed to water, and therefore the leach of zinc pyrithione is initially delayed and the biocide may start to solubilise and degrade. The result is an anti-fouling product that is formulated without introducing new compounds and with reduced amount of zinc pyrithione (1/3). Finally, it is shown that it is possible to make antifouling paint for yachts without zinc or copper based pigments by using other traditional pigments and fillers, which have no known long-term adverse effect in the aquatic environment, in combination with the gel. The results are documented in raft tests. (C) 2011 Elsevier B.V. All rights reserved.

    KW - Gel encapsulation

    KW - Zinc pyrithione

    KW - Silica gel

    KW - Anti-fouling

    U2 - 10.1016/j.porgcoat.2011.03.001

    DO - 10.1016/j.porgcoat.2011.03.001

    M3 - Journal article

    VL - 72

    SP - 109

    EP - 114

    JO - Progress in Organic Coatings

    JF - Progress in Organic Coatings

    SN - 0300-9440

    IS - 1-2

    ER -