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Какой краской красить металл

07.11.2013 Раздел: Лакокрасочные материалы Комментарии: (85) Размер текста: A+ / A-

какой краской красить металлМеталлические поверхности гаражных ворот, заборов, а так же кровли нуждаются в антикоррозионной защите и придании им приятного глазу внешнего вида. Прогресс в этой области неуклонно идет вперед. Например, еще недавно сама мысль о нанесении водно-дисперсионной краски на металлическую поверхность была утопичной. Железо быстро коррозирует под действием воды, какая тут может быть краска на водной основе?

Выбор краски для металла

Безусловно, водно-дисперсионные краски с обычным составом не годятся для покраски металла. Однако разработанные образцы с примесью антикоррозионных добавок , формирующих на металле плотную защитную пленку и обладающих хорошей адгезией к металлической поверхности, делают применение специальных водно-дисперсионных красок возможным и вполне оправданным. Подобные составы стали применять даже в судо- и автомобилестроении.

Особенности окрашивания металлов

Рассмотрим способы покраски металла, применяемые в современном строительстве. Известно, что наиболее сложной задачей является подбор краски для кровли. Существуют три крупные группы металлических кровельных материалов, различающихся по типу основного применяемого металла, в качестве которого может выступать черное или оцинкованное железо, либо один из цветных металлов – алюминий, медь и их сплавы. Последний вариант достаточно дорог и не будет рассматриваться.

Преимущества водно-дисперсионных красок

Распространенность кровли из железа делает вопрос, какой краской красить металл, весьма насущным. Железо обязательно нуждается в покраске. В большинстве случаев для этого применяют привычные алкидные и масляные краски. Современные антикоррозионные водно-дисперсионные акриловые эмали будут стоить несколько дороже, но покрытие на их основе более долговечно при любых атмосферных условиях, кроме того, его эластичность не меняется со временем.

преимущества водно-дисперсионных красок

Последнее свойство весьма полезно, поскольку металлическая кровля подвержена постоянным расширяющим и сжимающим усилиям, возникающим при температурных изменениях. Краски на алкидной основе или масляные не демонстрируют достаточную эластичность покрытий на их основе. Это одна из первопричин их растрескивания и отслоения от поверхности металла со временем.

Покраска оцинкованного железа

Необходимость покраски кровли из оцинкованного железа вызывает непрекращающиеся споры. Покрытие на основе цинка надежно защитит крышу лет на 15. По истечении этого срока кровлю придется красить в обязательном порядке. Провести эту работу можно и изначально. Это не только обеспечит приятный внешний вид металлической кровли, но и обеспечит ей надежную дополнительную защиту.

Поверхность оцинкованного железа отличается большей пассивностью, чем черного. Поэтому для ее покраски требуются специальные краски, характеризующиеся большей эластичностью и адгезией. Алкидная или масляная краска не продержится на оцинкованной поверхности более одного сезона. Здесь подходят только специальные акриловые эмали. Содержащиеся в них антикоррозионные добавки даже способны нейтрализовать и предотвратить дальнейшее распространение небольших пятен ржавчины.

Какой краской красить металл видео:

Какой краской красить металл Reviewed by Vash-Remontik.ru on . Металлические поверхности гаражных ворот, заборов, а так же кровли нуждаются в антикоррозионной защите и придании им приятного глазу внешнего вида. Прогресс в э Металлические поверхности гаражных ворот, заборов, а так же кровли нуждаются в антикоррозионной защите и придании им приятного глазу внешнего вида. Прогресс в э Rating:
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Комментариев (85)
  • Николай

    История моя проста. Есть на даче моей балконная крыша. Да не удобно её красить, но чтобы металл не гнил и не пошла ржавчина приходится. И как на зло я делал это уже три раза. Первой краски хватило на пол года. Она слезла и отвалилась. Вторая чуть по больше меня радовала, но тоже пришлось лезть перекрашивать. На третий раз я спросил у своих соседей, чем они вообще красили, потому что там уже как два года всё держится и смотрится, как новая. Они назвали мне какую-то HAMMERITE, сначала подумал, что чушь. Но потом залез в интернет и понял, что третий раз за ней. И это реально так. Уже второй год пошёл. И хоть бы хны.

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    На рынке шире представлены лакокрасочные материалы для черных металлов, так как спрос на них больше. Кроме того, обработка цветных металлов стоит дороже, и грунтовки для них относятся, как правило, к верхнему ценовому сегменту.

  • Тимур

    Я несколько раз работал с Цертой, каждый раз результат хороший, ничего не откалывается, не слазит, и впринципе ложится хорошо. Их же краску видел и термостойкую, по лету или в конце весны думаю ею пройтись по мангалу и каминным решеткам. Всем в общем советую, если вдруг придется что-то металлическое красить

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