{"id":5461,"date":"2022-08-18T14:23:16","date_gmt":"2022-08-18T14:23:16","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5461"},"modified":"2026-08-25T08:50:57","modified_gmt":"2026-08-25T08:50:57","slug":"the-efficacy-of-water-based-ink-additivest","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/pt\/the-efficacy-of-water-based-ink-additivest\/","title":{"rendered":"Water-Based Ink Additives: Wetting, Foam & pH Guide"},"content":{"rendered":"

Resposta r\u00e1pida:<\/strong> Water-based ink additives should be selected from the first measured failure. Separate pH and viscosity drift, substrate wetting, process air, drying and cured-print handling before changing the additive package.<\/p>\n

Uma grande variedade de aditivos para tintas \u00e0 base de \u00e1gua, de acordo com a finalidade de uso, pode ser dividida em tr\u00eas categorias: processo de fabrica\u00e7\u00e3o com aditivos, processo de armazenamento com aditivos e processo de impress\u00e3o com aditivos. Os aditivos comumente usados e sua efic\u00e1cia s\u00e3o descritos a seguir.<\/p>\n

A, estabilizador de pH.<\/p>\n

A tinta \u00e0 base de \u00e1gua no processo de produ\u00e7\u00e3o requer espessantes e dispersantes, esses dois aditivos precisam ser eficazes em condi\u00e7\u00f5es alcalinas, e a maioria das tintas \u00e0 base de \u00e1gua na produ\u00e7\u00e3o e no uso de seu valor de pH \u00e9 inferior a 7. O valor de pH da tinta \u00e0 base de \u00e1gua na aplica\u00e7\u00e3o do desempenho da tinta tamb\u00e9m \u00e9 maior, o valor de pH \u00e9 muito baixo, a viscosidade da tinta \u00e9 muito alta e f\u00e1cil de causar aglomera\u00e7\u00e3o de tinta; o valor de pH \u00e9 muito alto, a profundidade da cor da tinta \u00e9 reduzida. Portanto, \u00e9 muito importante controlar a estabilidade do valor do pH durante a produ\u00e7\u00e3o e o uso da tinta \u00e0 base de \u00e1gua.<\/p>\n

Geralmente, no processo de impress\u00e3o, devem ser detectadas altera\u00e7\u00f5es no pH da tinta; quando o valor do pH for inferior a 8, deve-se adicionar a quantidade adequada de estabilizador de pH, para que a tinta mantenha um bom estado de impress\u00e3o. \u00c9 necess\u00e1rio que o pH da tinta seja controlado com precis\u00e3o. O valor do pH da tinta dos pa\u00edses europeus \u00e9 neutro como padr\u00e3o, o ajuste do pH \u00e9 de 8,5, sua fluidez e brilho atingem um bom estado. Quando o valor do pH \u00e9 superior a 9,5, a alcalinidade \u00e9 muito forte, a viscosidade da tinta ser\u00e1 reduzida, a velocidade de secagem se torna mais lenta, o desempenho da resist\u00eancia \u00e0 \u00e1gua piora; quando o valor do pH \u00e9 inferior a 8, a alcalinidade \u00e9 muito fraca, a viscosidade da tinta aumenta, a velocidade de secagem acelera, o que causar\u00e1 sujeira na chapa, placa de pasta, bolhas e outros defeitos.<\/p>\n

O estabilizador de pH \u00e9 uma subst\u00e2ncia vol\u00e1til, caso contr\u00e1rio, ele \u00e9 deixado no filme de tinta para afetar as propriedades f\u00edsicas do filme de tinta, como resist\u00eancia \u00e0 \u00e1gua e resist\u00eancia ao atrito. Sua principal fun\u00e7\u00e3o \u00e9 equilibrar o valor do pH da tinta \u00e0 base de \u00e1gua no processo de impress\u00e3o, de modo que o valor do pH do sistema de tinta seja mantido entre 8,2 e 9,5. Ele tamb\u00e9m pode ser usado como diluente, o uso de seu m\u00e9todo \u00e9 a cada 30 a 50 minutos para adicionar o efeito 1%-2%.<\/p>\n

Os estabilizadores de pH comumente usados s\u00e3o am\u00f4nia, alquilamina, dimetilaminoetanol (DMAE), AMP95, GS-AC95 e assim por diante. Entre eles, a am\u00f4nia \u00e9 * comumente usada devido ao seu pre\u00e7o barato, mas seu forte odor e alta volatilidade causar\u00e3o instabilidade de pH.<\/p>\n

Segundo, diluente.<\/p>\n

A principal fun\u00e7\u00e3o do diluente \u00e9 reduzir a viscosidade da tinta \u00e0 base de \u00e1gua. N\u00e3o exagere na dose, a quantidade de diluente adicionada geralmente n\u00e3o excede 3%-4%. Caso contr\u00e1rio, a concentra\u00e7\u00e3o da tinta ser\u00e1 reduzida, a cor ficar\u00e1 mais clara e o pH da tinta mudar\u00e1. O diluente de tinta \u00e0 base de \u00e1gua pode ser \u00e1gua, etanol e \u00e1lcool isoprop\u00edlico ou outras misturas. A adi\u00e7\u00e3o de mais diluente ou o uso de dilui\u00e7\u00e3o com \u00e1gua de torneira dura causar\u00e1 bolhas; voc\u00ea pode adicionar antiespumante ao mesmo tempo para antiespumar. O diluente deve ser adicionado lentamente enquanto se agita para evitar que a viscosidade fique muito baixa.<\/p>\n

Terceiro, espessantes.<\/p>\n

O espessante \u00e9 um aditivo reol\u00f3gico que desempenha tr\u00eas fun\u00e7\u00f5es na tinta.<\/p>\n

\u2460 efeito de espessamento, de modo que a viscosidade da tinta aumente, para melhorar a estabilidade qu\u00edmica da log\u00edstica da tinta.<\/p>\n

(ii) as propriedades reol\u00f3gicas da tinta podem ser controladas durante a impress\u00e3o.<\/p>\n

Devido ao aumento da viscosidade da tinta, o pigmento e a carga na tinta n\u00e3o s\u00e3o f\u00e1ceis de precipitar, aumentando a estabilidade de armazenamento da tinta. A quantidade de agente espessante \u00e9 geralmente 0,5%-1%<\/p>\n

Quarto, agente anti-riscos.<\/p>\n

O agente antidesgaste tamb\u00e9m \u00e9 chamado de agente deslizante, pode melhorar a resist\u00eancia \u00e0 abras\u00e3o e a suavidade da impress\u00e3o, mas tamb\u00e9m tem um papel imperme\u00e1vel, clareador e antiadesivo; a dosagem geralmente \u00e9 de 2%-3%, n\u00e3o pode ser adicionada em excesso. Esse tipo de aditivo \u00e9 composto principalmente de ceras, especialmente cera de polietileno de baixo peso molecular. Podem ser adicionados no processo de prepara\u00e7\u00e3o da tinta, mas tamb\u00e9m na transfer\u00eancia de impress\u00e3o. Os agentes antirriscos aplic\u00e1veis s\u00e3o principalmente silicone e cera de duas categorias. H\u00e1 uma variedade de emuls\u00f5es de cera que podem ser usadas para tinta \u00e0 base de \u00e1gua, como emuls\u00e3o de cera de polietileno, emuls\u00e3o de cera de carna\u00faba do Brasil, emuls\u00e3o de cera de poliamida etc.<\/p>\n

Quinto, agente anti-riscos.<\/p>\n

O agente antirriscos tamb\u00e9m \u00e9 um aditivo de tinta \u00e0 base de \u00e1gua, aplicado \u00e0 tinta \u00e0 base de \u00e1gua, que pode melhorar a resist\u00eancia a riscos do filme de revestimento, as propriedades hidrof\u00f3bicas da superf\u00edcie e as propriedades antiviscosidade e antiincrustantes, de modo que o filme de revestimento seja mais suave.<\/p>\n

Sexto, agente de secagem lenta.<\/p>\n

As tintas \u00e0 base de \u00e1gua que secam muito rapidamente ser\u00e3o mal transferidas, resultando em tinta ao redor da rede, no fen\u00f4meno de bloqueio da chapa, na borda da impress\u00e3o irregular, no n\u00f3 seco da tinta na superf\u00edcie da chapa de impress\u00e3o. Agente de secagem lenta com fortes propriedades umectantes; pode reduzir efetivamente a velocidade de secagem do produto, pode melhorar efetivamente o desempenho da placa de lavagem de tinta. Sua apar\u00eancia \u00e9 de um l\u00edquido transparente, pode ser usado para a dissolu\u00e7\u00e3o de \u00e1gua e \u00e1lcool, tem um efeito hidratante, evita que a tinta seque na chapa de impress\u00e3o ou nos rolos anilox, reduz a ocorr\u00eancia de falhas de impress\u00e3o, como bloqueio e colagem da chapa. A propor\u00e7\u00e3o de uso \u00e9 de 1%-2%. Adicione o agente de secagem lenta depois que a tinta engrossar, o valor do pH ser\u00e1 reduzido, portanto, adicione o agente de secagem lenta ao mesmo tempo em que adiciona \u00e1gua para controlar a viscosidade da tinta e o valor do pH.<\/p>\n

Sete, absorvedor de ultravioleta.<\/p>\n

O sistema \u00e0 base de \u00e1gua com absorvedores ultravioleta usados na tinta \u00e0 base de \u00e1gua pode efetivamente interromper o amarelamento da camada de tinta de sombreamento, interromper ou retardar a perda de cor da tinta colorida, a perda de luz e outros fen\u00f4menos de envelhecimento.
\nEntre em contato conosco agora!<\/b><\/strong><\/p>\n

Se precisar de COA, MSDS ou TDS de mon\u00f4meros uv, preencha suas informa\u00e7\u00f5es de contato no formul\u00e1rio abaixo. Em geral, entraremos em contato em 24 horas. Voc\u00ea tamb\u00e9m pode me enviar um e-mail info@longchangchemical.com<\/a><\/span> durante o hor\u00e1rio comercial (das 8h30 \u00e0s 18h UTC+8 de segunda a s\u00e1bado) ou use o bate-papo ao vivo do site para obter uma resposta imediata.<\/b><\/strong><\/h4>\n

Match each water-based ink defect to one additive function<\/h2>\n

For difficult-film or substrate wetting, screen the CHLUMIWE\u00ae 2100 wetting agent<\/a> only after confirming surface treatment. For process air, evaluate the CHLUMIAF\u00ae 3062 defoamer<\/a> separately. If the measured failure is blocking or release after drying, use CHLUMIAG\u00ae 3501 for printed-surface handling<\/a> as a distinct trial rather than combining all three at once.<\/p>","protected":false},"excerpt":{"rendered":"

A wide range of water-based ink additives, according to the purpose of use can be divided into three categories: manufacturing process with additives, storage process with additives and printing process<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5461","post","type-post","status-publish","format-standard","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"\nWater-Based Ink Additives: Wetting, Foam & pH Guide<\/title>\n<meta name=\"description\" content=\"Choose water-based ink additives by the actual defect: pH drift, poor wetting, foam, craters, blocking or drying. Includes controlled screening guidance.\" \/>\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\/the-efficacy-of-water-based-ink-additivest\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Water-Based Ink Additives: Wetting, Foam & pH Guide\" \/>\n<meta property=\"og:description\" content=\"Choose water-based ink additives by the actual defect: pH drift, poor wetting, foam, craters, blocking or drying. 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