{"id":5507,"date":"2022-09-02T13:54:33","date_gmt":"2022-09-02T13:54:33","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5507"},"modified":"2024-12-09T11:07:03","modified_gmt":"2024-12-09T11:07:03","slug":"how-to-whiten-the-paint","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/pt\/how-to-whiten-the-paint\/","title":{"rendered":"Como branquear a tinta?"},"content":{"rendered":"<h1><strong>Como branquear a tinta?<\/strong><\/h1>\n<p>A brancura da tinta branca depende principalmente da brancura e da tonalidade do di\u00f3xido de tit\u00e2nio ou de outra cor branca ou enchimento usado. A refletividade do di\u00f3xido de tit\u00e2nio para a luz incidente n\u00e3o \u00e9 100%, especialmente para comprimentos de onda nas faixas azul e violeta, a taxa de absor\u00e7\u00e3o do di\u00f3xido de tit\u00e2nio ainda \u00e9 bastante alta, o que faz com que ele n\u00e3o seja branco puro, mas com uma tonalidade amarelada. Podemos mudar a fase da cor adicionando uma pequena quantidade de aditivos. O princ\u00edpio \u00e9 aumentar a luz de cor azul do sistema para misturar com a luz de cor amarela e obter o branco, melhorando a brancura da tinta. Especificamente, h\u00e1 v\u00e1rios m\u00e9todos comuns de clareamento de tinta, como segue.<\/p>\n<p>Primeiro, adicione <a href=\"https:\/\/longchangchemical.com\/pt\/product\/optical-brightener-ob-1-cas-1533-45-5\/\">agente clareador fluorescente<\/a>.<\/p>\n<p>O agente de clareamento fluorescente pode absorver luz ultravioleta com um comprimento de onda de 300~400nm, e essa fun\u00e7\u00e3o \u00e9 bastante semelhante \u00e0 do absorvedor de UV. Mas o absorvedor de UV \u00e9 a energia absorvida que se transforma em libera\u00e7\u00e3o de calor, enquanto o agente de clareamento fluorescente absorve a luz ultravioleta e dispara fluoresc\u00eancia azul-violeta, fluoresc\u00eancia do comprimento de onda principal de 420 ~ 480 mm, de modo que pode melhorar significativamente a brancura e o \"brilho\". *Um objeto branco \u00e9 aquele que reflete 100% da luz incidente, e a adi\u00e7\u00e3o de branqueadores fluorescentes pode fazer com que as pessoas se sintam visualmente mais brancas. Os tons azuis parecem mais brancos do que o branco com tons amarelos, portanto, o aumento da satura\u00e7\u00e3o do azul pode obter o efeito visual de aumento da brancura.<\/p>\n<p>&nbsp;<\/p>\n<p>Em segundo lugar, o uso de di\u00f3xido de tit\u00e2nio de brancura muito alta.<\/p>\n<p>Escolha di\u00f3xido de tit\u00e2nio de alta alvura, que pode melhorar a alvura; outras mat\u00e9rias-primas tamb\u00e9m tentam usar cores claras em \u00e1gua; em quantidade suficiente de di\u00f3xido de tit\u00e2nio muito branco, a alvura da tinta \u00e9 muito alta. O di\u00f3xido de tit\u00e2nio rutilo, embora a fase de cor seja amarela, tem boa cobertura e alta brancura. A fase de cor do di\u00f3xido de tit\u00e2nio anatase n\u00e3o \u00e9 amarelada, o poder de cobertura \u00e9 ruim, a brancura n\u00e3o \u00e9 alta, o tom \u00e9 frio, mas algumas pessoas acham que \u00e9 \"muito branco\", o que \u00e9 um hobby diferente.<\/p>\n<p>&nbsp;<\/p>\n<p>Terceiro, pendurar azul.<\/p>\n<p>Devido ao uso da fase amarela da cor do di\u00f3xido de tit\u00e2nio rutilo, ele pode ser usado para complementar o pigmento roxo, como o ultramarino, que pode eliminar o amarelo, de modo que a tinta pare\u00e7a mais branca, comumente conhecida como hanging blue. O ultramarino \u00e9 um pigmento azul inorg\u00e2nico *antigo e *vivo, n\u00e3o t\u00f3xico e ecologicamente correto. O Ultramarine \u00e9 um p\u00f3 de cor azul-violeta brilhante, que pode eliminar a luz amarela dentro da subst\u00e2ncia branca e produzir o efeito de clareamento da luz azul. O Ultramarine \u00e9 resistente a \u00e1lcalis, ao calor, \u00e0 luz, \u00e0s intemp\u00e9ries, insol\u00favel em \u00e1gua e se decomp\u00f5e e desbota quando encontra \u00e1cido. O ultramarino \u00e9 feito de uma mistura de enxofre, argila, quartzo e carv\u00e3o, e \u00e9 queimado.<\/p>\n<p>No caso de cores complexas, tamb\u00e9m \u00e9 poss\u00edvel adicionar pigmentos roxos ou a fase azul-violeta do azul de ftalocianina para deixar o azul mais branco.<\/p>\n<p>&nbsp;<\/p>\n<p>Quarto, tinta com alta concentra\u00e7\u00e3o de volume de pigmento (PVC).<\/p>\n<p>Na verdade, o pigmento branco n\u00e3o \u00e9 di\u00f3xido de tit\u00e2nio ou \u00f3xido de zinco, mas \"vazio\", ou seja, \"bolha de ar\". Portanto, quando o PVC da tinta atravessa seu CPVC, ele introduz o *pigmento branco - \"bolha de ar\" na pel\u00edcula seca da tinta, e a brancura da tinta aumenta significativamente nesse momento. \u00c9 assim que muitas das \"tintas superbrancas\" para constru\u00e7\u00e3o, populares no mercado**, s\u00e3o projetadas. Ao projetar uma tinta muito branca, os defeitos das mat\u00e9rias-primas introduzidas devem ser levados em conta e descartados adequadamente. Por exemplo, a resist\u00eancia a intemp\u00e9ries do di\u00f3xido de tit\u00e2nio anatase e do agente clareador \u00e9 ruim, a resist\u00eancia a \u00e1cidos do ultramar \u00e9 ruim e a resist\u00eancia das bolhas de ar \u00e9 reduzida.<\/p>\n<p>5. Incorporar cores de tonalidade branca<br \/>\nOs pintores profissionais geralmente adicionam pequenas quantidades de corantes azuis ou roxos para neutralizar os tons amarelados da tinta branca. Essa t\u00e9cnica, conhecida como balanceamento de cores, pode fazer com que o branco pare\u00e7a mais limpo e brilhante.<\/p>\n<p>6. Propor\u00e7\u00f5es recomendadas de colora\u00e7\u00e3o:<\/p>\n<p>Ultramarine Blue: 0,1-0,2% para leves tons amarelos<br \/>\nAzul cobalto: 0,05-0,15% para tons amarelos moderados<br \/>\nVioleta: 0,01-0,05% para tons amarelos fortes<br \/>\nPropor\u00e7\u00e3o da mistura: azul 70% e violeta 30% para um equil\u00edbrio ideal<br \/>\nControle avan\u00e7ado de tamanho de part\u00edcula<br \/>\nO controle da distribui\u00e7\u00e3o do tamanho das part\u00edculas dos pigmentos brancos afeta significativamente a brancura final. Pesquisas mostram que as faixas ideais de tamanho de part\u00edcula aumentam a efici\u00eancia da dispers\u00e3o da luz.<\/p>\n<p>7. Especifica\u00e7\u00f5es de metas:<\/p>\n<p>Tamanho da part\u00edcula prim\u00e1ria: 0,2-0,3 m\u00edcrons para TiO2<br \/>\nDistribui\u00e7\u00e3o do tamanho do agregado: 80% dentro de 0,5-0,8 m\u00edcrons<br \/>\n\u00cdndice de qualidade de dispers\u00e3o: &gt;95%<br \/>\n\u00c1rea de superf\u00edcie: 15-20 m\u00b2\/g para m\u00e1xima efici\u00eancia<br \/>\nTratamento de superf\u00edcie e dispersantes<br \/>\nAs tintas brancas modernas alcan\u00e7am uma brancura superior por meio do tratamento cuidadoso da superf\u00edcie dos pigmentos e da sele\u00e7\u00e3o de dispersantes. Isso aumenta a estabilidade e evita a aglomera\u00e7\u00e3o.<\/p>\n<p>8. Principais componentes:<\/p>\n<p>Revestimento de s\u00edlica: 3-5% em peso de TiO2<br \/>\nTratamento de alumina: 1-2% para maior durabilidade<br \/>\nCarga de dispersante: 0,8-1,2% da f\u00f3rmula total<br \/>\nAgentes umectantes: 0,3-0,5% para uma dispers\u00e3o ideal<br \/>\nPadr\u00f5es de desempenho<br \/>\nClassifica\u00e7\u00e3o de opacidade: 96-98% (padr\u00e3o do setor)<br \/>\nValor de reflet\u00e2ncia da luz (LRV): 85-95%<br \/>\nCobertura: 350-400 p\u00e9s quadrados por gal\u00e3o<br \/>\nDurabilidade: 5 a 7 anos (uso externo)<\/p>\n<p>9. Dicas para obter melhores resultados com a tinta branca<br \/>\nSempre comece com uma tinta base de alta qualidade (teor m\u00ednimo de TiO2 15%)<br \/>\nMisture bem por 3 a 5 minutos para garantir a distribui\u00e7\u00e3o uniforme dos aditivos<br \/>\nTeste a tinta em uma pequena \u00e1rea primeiro<br \/>\nConsidere as condi\u00e7\u00f5es de ilumina\u00e7\u00e3o do local onde a tinta ser\u00e1 usada<br \/>\nUse t\u00e9cnicas de armazenamento adequadas para manter a brancura<br \/>\nErros comuns a serem evitados<br \/>\nAo tentar obter uma pintura mais branca, evite essas armadilhas comuns:<\/p>\n<p>10. Excesso de colora\u00e7\u00e3o com azul ou roxo (exceder 1% pode criar uma apar\u00eancia n\u00e3o natural)<br \/>\nUso de di\u00f3xido de tit\u00e2nio de baixa qualidade (a pureza deve ser &gt;98%)<br \/>\nT\u00e9cnicas de mistura inadequadas<br \/>\nDeixar de considerar o ambiente final do aplicativo<\/p>\n<p>11. Considera\u00e7\u00f5es ambientais<br \/>\nAo melhorar a brancura da tinta, considere o uso de aditivos e pigmentos ecologicamente corretos. Muitos fabricantes agora oferecem<br \/>\nop\u00e7\u00f5es ambientalmente conscientes que mant\u00eam altos padr\u00f5es de desempenho e reduzem o impacto ambiental.<br \/>\nEstudos recentes mostram que as tintas brancas ecol\u00f3gicas podem atingir 92% da opacidade das formula\u00e7\u00f5es tradicionais, enquanto<br \/>\nreduzindo a pegada de carbono em at\u00e9 30%.<\/p>\n<p>12. Solu\u00e7\u00f5es profissionais<br \/>\nPara aplica\u00e7\u00f5es comerciais, considere estas solu\u00e7\u00f5es de n\u00edvel profissional:<\/p>\n<p>Di\u00f3xido de tit\u00e2nio de grau superior (pureza 99,9%)<br \/>\nAditivos de clareamento profissional<br \/>\nBranqueadores \u00f3pticos de grau industrial (concentra\u00e7\u00e3o 0,1-0,3%)<br \/>\nSistemas de corre\u00e7\u00e3o de cores<\/p>","protected":false},"excerpt":{"rendered":"<p>Como branquear a tinta? A brancura da tinta branca depende principalmente da brancura e da tonalidade do di\u00f3xido de tit\u00e2nio ou de outra cor branca ou enchimento usado. A refletividade do di\u00f3xido de tit\u00e2nio para a luz incidente n\u00e3o \u00e9 100%, especialmente para comprimentos de onda nas faixas azul e violeta, a taxa de absor\u00e7\u00e3o do di\u00f3xido de tit\u00e2nio \u00e9 [...]<\/p>","protected":false},"author":1,"featured_media":5508,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5507","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to whiten the paint? - Longchang Chemical<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/pt\/how-to-whiten-the-paint\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to whiten the paint? - Longchang Chemical\" \/>\n<meta property=\"og:description\" content=\"How to whiten the paint? The whiteness of white paint mainly depends on the whiteness and hue of the titanium dioxide or other white color or filler used. 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The whiteness of white paint mainly depends on the whiteness and hue of the titanium dioxide or other white color or filler used. 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