{"id":3017,"date":"2021-01-21T09:21:00","date_gmt":"2021-01-21T08:21:00","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=3017"},"modified":"2025-09-29T10:48:04","modified_gmt":"2025-09-29T08:48:04","slug":"esferas-de-polipropileno-pp","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/pt-pt\/produtos\/esferas-de-plastico\/esferas-de-polipropileno-pp\/","title":{"rendered":"Esferas de polipropileno (PP)"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Polypropylene\">Esferas de polipropileno (PP) \u2013 ultraleves, resistentes quimicamente, econ\u00f3micas<\/a><\/h2>\n<p>As esferas de polipropileno (PP) oferecem densidade muito baixa, excelente resist\u00eancia qu\u00edmica e opera\u00e7\u00e3o limpa, n\u00e3o magn\u00e9tica. Como termopl\u00e1stico de engenharia semicristalino, o PP assegura funcionamento silencioso e baixa absor\u00e7\u00e3o de humidade, sendo ideal para b\u00f3ias, dosagem e aplica\u00e7\u00f5es com fluidos n\u00e3o agressivos, onde peso e corros\u00e3o s\u00e3o cr\u00edticos.<\/p>\n<h3>\ud83d\udd27 Especifica\u00e7\u00f5es t\u00e9cnicas principais<\/h3>\n<ul>\n<li><strong>Composi\u00e7\u00e3o<\/strong>: Homopol\u00edmero de polipropileno ou graus copol\u00edmero (aleat\u00f3rio)<\/li>\n<li><strong>Estrutura<\/strong>: Termopl\u00e1stico semicristalino<\/li>\n<li><strong>Dureza<\/strong>: Shore D ~65\u201375 (aprox.)<\/li>\n<li><strong>Densidade<\/strong>: ~0,90\u20130,91 g\/cm\u00b3 (flutua na \u00e1gua)<\/li>\n<li><strong>Temperatura de servi\u00e7o<\/strong>: ~\u221210 a +95 \u00b0C (curto prazo at\u00e9 ~110 \u00b0C; depende do grau)<\/li>\n<li><strong>Resist\u00eancia qu\u00edmica<\/strong>: Excelente a \u00e1gua, sais, \u00e1cidos, bases; limitada a oxidantes fortes\/arom\u00e1ticos<\/li>\n<li><strong>Absor\u00e7\u00e3o de humidade<\/strong>: Muito baixa; <strong>El\u00e9trico<\/strong>: bom isolante; <strong>Magn\u00e9tico<\/strong>: n\u00e3o magn\u00e9ticas<\/li>\n<li><strong>Contacto com alimentos<\/strong>: Graus conformes dispon\u00edveis (sob pedido)<\/li>\n<\/ul>\n<h3>\u2705 Vantagens<\/h3>\n<ul>\n<li><strong>Ultraleves<\/strong>: Minimiza in\u00e9rcia e ru\u00eddo<\/li>\n<li><strong>\u00c0 prova de corros\u00e3o<\/strong> em muitos meios aquosos\/alcalinos<\/li>\n<li><strong>Baixa absor\u00e7\u00e3o de humidade<\/strong> com dimens\u00f5es est\u00e1veis<\/li>\n<li><strong>N\u00e3o faiscantes &amp; n\u00e3o magn\u00e9ticas<\/strong><\/li>\n<li><strong>Econ\u00f3micas<\/strong>: Custo-efetivas para grandes volumes<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplica\u00e7\u00f5es das esferas de polipropileno<\/h3>\n<ul>\n<li><strong>B\u00f3ias &amp; dispositivos de n\u00edvel<\/strong>: Indicadores flutuantes e est\u00e1veis<\/li>\n<li><strong>V\u00e1lvulas &amp; dosagem<\/strong>: Esferas de reten\u00e7\u00e3o para meios n\u00e3o agressivos<\/li>\n<li><strong>Tratamento de \u00e1gua &amp; material de laborat\u00f3rio<\/strong><\/li>\n<li><strong>Utilidades alimentares\/farmac\u00eauticas<\/strong> (com graus conformes)<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Classes &amp; tamanhos dispon\u00edveis<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Classes<\/strong>: ISO 3290, DIN 5401, AFBMA (toler\u00e2ncias equivalentes)<\/a><\/li>\n<li><strong>Gama de di\u00e2metros<\/strong>: Tamanhos padr\u00e3o imperiais e m\u00e9tricos; tamanhos especiais\/personalizados sob pedido<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Esferas de polipropileno (PP) \u2013 ultraleves, resistentes quimicamente, econ\u00f3micas As esferas de polipropileno (PP) oferecem densidade muito baixa, excelente resist\u00eancia qu\u00edmica e opera\u00e7\u00e3o limpa, n\u00e3o magn\u00e9tica. Como termopl\u00e1stico de engenharia semicristalino, o PP assegura funcionamento silencioso e baixa absor\u00e7\u00e3o de humidade, sendo ideal para b\u00f3ias, dosagem e aplica\u00e7\u00f5es com fluidos n\u00e3o agressivos, onde peso [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9136,"parent":3007,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3017","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Esferas de polipropileno (PP) \u2013 leveza e resist\u00eancia qu\u00edmica<\/title>\n<meta name=\"description\" content=\"Esferas de polipropileno s\u00e3o leves, resistentes \u00e0 umidade e a produtos qu\u00edmicos, ideais para aplica\u00e7\u00f5es m\u00e9dicas, qu\u00edmicas e industriais\" \/>\n<meta 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