{"id":10827,"date":"2026-07-24T00:00:46","date_gmt":"2026-07-24T00:00:46","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10827"},"modified":"2026-08-08T07:15:05","modified_gmt":"2026-08-08T07:15:05","slug":"waterborne-plastic-coating-additives","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/pt\/waterborne-plastic-coating-additives\/","title":{"rendered":"Aditivos para revestimentos pl\u00e1sticos \u00e0 base de \u00e1gua: umecta\u00e7\u00e3o e forma\u00e7\u00e3o de espuma"},"content":{"rendered":"

Os aditivos para revestimentos pl\u00e1sticos \u00e0 base de \u00e1gua devem ser selecionados com base na primeira etapa em que ocorre falha, e n\u00e3o apenas com base na apar\u00eancia do defeito final.<\/strong> A cobertura inadequada pode ser um problema relacionado \u00e0 energia do substrato ou \u00e0 contamina\u00e7\u00e3o; os poros min\u00fasculos podem ser causados por ar retido do processo; o fluxo irregular pode indicar um problema de compatibilidade. Para as linhas de produ\u00e7\u00e3o documentadas da Longchang, o WD-D545 \u00e9 a op\u00e7\u00e3o de umectante espec\u00edfica para tintas pl\u00e1sticas, o DF-D9904BR \u00e9 a op\u00e7\u00e3o de antiespumante \u00e0 base de \u00e1gua para altas velocidades de cisalhamento e o 3467 \u00e9 a op\u00e7\u00e3o de controle de superf\u00edcie voltada para a compatibilidade.<\/p>\n

Nenhum desses produtos, por si s\u00f3, proporciona ader\u00eancia ao polipropileno ou ao polietileno n\u00e3o tratado. A escolha da resina, o tipo de pl\u00e1stico, a contamina\u00e7\u00e3o por desmoldante, a limpeza, o pr\u00e9-tratamento, a espessura do filme, as rebarbas e a cura continuam fazendo parte do sistema de revestimento. Aprove um aditivo somente quando ele resolver a falha em quest\u00e3o sem reduzir a ader\u00eancia, a apar\u00eancia, a capacidade de repintura, a resist\u00eancia \u00e0 \u00e1gua ou a estabilidade de armazenamento.<\/p>\n

Mapa de decis\u00e3o sobre revestimentos pl\u00e1sticos \u00e0 base de \u00e1gua<\/h2>\n
\n\n\n\n\n\n\n\n\n
Evid\u00eancias observadas<\/th>\nPrimeira verifica\u00e7\u00e3o controlada<\/th>\nRota do produto, caso seja confirmada<\/th>\n<\/tr>\n<\/thead>\n
Forma bolhas, retrai-se ou deixa \u00e1reas com baixa cobertura imediatamente ap\u00f3s a aplica\u00e7\u00e3o<\/td>\nVerifique o tipo de pl\u00e1stico, o tratamento de superf\u00edcie, a limpeza e a umectabilidade<\/td>\nWD-D545<\/td>\n<\/tr>\n
O lote ret\u00e9m a microespuma ap\u00f3s a dispers\u00e3o, o bombeamento ou a circula\u00e7\u00e3o por pulveriza\u00e7\u00e3o<\/td>\nPadronizar o cisalhamento e medir a gera\u00e7\u00e3o\/decad\u00eancia da espuma<\/td>\nDF-D9904BR na fase de moagem ou na fase de alto cisalhamento validada<\/td>\n<\/tr>\n
O substrato fica molhado, mas o fluxo do filme ou a compatibilidade da resina continuam irregulares<\/td>\nRealizar uma s\u00e9rie de testes de compatibilidade com doses baixas e verificar a reaplica\u00e7\u00e3o do revestimento<\/td>\n3467<\/td>\n<\/tr>\n
A falha ocorre em um molde, lote de limpeza ou n\u00edvel de pr\u00e9-tratamento<\/td>\nPrimeiro, corrija a contamina\u00e7\u00e3o ou fa\u00e7a a prepara\u00e7\u00e3o da superf\u00edcie<\/td>\nN\u00e3o haver\u00e1 aumento adicional at\u00e9 que a causa seja controlada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>
Mapa do processo original de revestimento pl\u00e1stico: analise separadamente o substrato, o ar arrastado e a compatibilidade da superf\u00edcie antes de selecionar um aditivo.<\/figcaption><\/figure>\n\n\n\n\n\n\n\n
Produto<\/th>\nAjuste publicado<\/th>\nOrienta\u00e7\u00f5es iniciais para fornecedores<\/th>\nLimite a ser protegido<\/th>\n<\/tr>\n<\/thead>\n
CHLUMICRYL\u00ae WD-D545<\/strong><\/a><\/td>\nTintas \u00e0 base de \u00e1gua para madeira, uso industrial e pl\u00e1stico; umecta\u00e7\u00e3o e espalhamento do substrato<\/td>\n0,1\u20130,51 TP3T da formula\u00e7\u00e3o total; em qualquer etapa da produ\u00e7\u00e3o, incluindo a p\u00f3s-adi\u00e7\u00e3o<\/td>\nA classifica\u00e7\u00e3o de antiespumante publicada \u00e9 zero; n\u00e3o considere este produto como uma solu\u00e7\u00e3o para libera\u00e7\u00e3o de ar<\/td>\n<\/tr>\n
CHLUMICRYL\u00ae DF-D9904BR<\/strong><\/a><\/td>\nAntiespumante \u00e0 base de \u00e1gua, sem s\u00edlica; princ\u00edpio ativo 30%<\/td>\n0,1\u20131,01 TP3T; misturar previamente com o co-solvente e, em seguida, dispersar sob alto cisalhamento<\/td>\nN\u00e3o \u00e9 uma solu\u00e7\u00e3o universal para adi\u00e7\u00f5es tardias<\/td>\n<\/tr>\n
CHLUMIAG\u00ae 3467<\/strong><\/a><\/td>\nSistemas \u00e0 base de \u00e1gua, solventes e UV; controle de superf\u00edcie com prioridade na compatibilidade<\/td>\nA orienta\u00e7\u00e3o publicada para a formula\u00e7\u00e3o \u00e0 base de \u00e1gua \u00e9 de 0,5\u201351 TP3T do total da formula\u00e7\u00e3o<\/td>\nUse uma escada compacta; verifique a ader\u00eancia e reaplique a tinta em cada n\u00edvel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Verifique a superf\u00edcie pl\u00e1stica antes de alterar a formula\u00e7\u00e3o<\/h2>\n

Registre a fam\u00edlia e o tipo de pol\u00edmero, o teor de material reciclado, o enchimento, o agente desmoldante, os produtos qu\u00edmicos de limpeza, o manuseio, o tratamento de superf\u00edcie e o tempo decorrido entre o tratamento e o revestimento. Compare um painel com qualidade comprovada com a pe\u00e7a de produ\u00e7\u00e3o com defeito. Um aditivo de umecta\u00e7\u00e3o pode melhorar a espalhabilidade, mas n\u00e3o \u00e9 capaz de remover \u00f3leo de silicone, restaurar um tratamento deteriorado ou compensar um aglutinante incompat\u00edvel.<\/p>\n

Sempre que poss\u00edvel, utilize a mesma geometria da pe\u00e7a. Pain\u00e9is planos de laborat\u00f3rio podem ocultar o recuo das bordas, o ac\u00famulo de material nos recessos, o efeito de sombra do jato de inje\u00e7\u00e3o e o hist\u00f3rico t\u00e9rmico que aparecem nas pe\u00e7as moldadas.<\/p>\n

Utilize o WD-D545 em caso de falha comprovada de umecta\u00e7\u00e3o<\/h2>\n

O WD-D545 \u00e9 a primeira op\u00e7\u00e3o mais direta quando um pl\u00e1stico limpo e corretamente tratado ainda apresenta um umectamento incompleto. Sua p\u00e1gina p\u00fablica lista especificamente tintas pl\u00e1sticas \u00e0 base de \u00e1gua, fornece orienta\u00e7\u00f5es sobre a f\u00f3rmula total de 0,1\u20130,51 TP3T e permite a incorpora\u00e7\u00e3o em qualquer etapa da produ\u00e7\u00e3o. Comece pelo valor mais baixo e compare com uma amostra em branco sob condi\u00e7\u00f5es fixas de aplica\u00e7\u00e3o.<\/p>\n

Me\u00e7a a continuidade do filme \u00famido, as crateras, a cobertura das bordas, o nivelamento, o afundamento, o brilho, a opacidade e a ades\u00e3o ap\u00f3s a cura completa. Se o revestimento molhar a superf\u00edcie, mas posteriormente apresentar delamina\u00e7\u00e3o, verifique o ligante, o pr\u00e9-tratamento, a cura e a contamina\u00e7\u00e3o, em vez de aumentar automaticamente a quantidade do aditivo de umecta\u00e7\u00e3o.<\/p>\n

Utilize o DF-D9904BR para o ar de processo retido<\/h2>\n

Escolha o DF-D9904BR quando o produto passar pelas etapas de moagem, dilui\u00e7\u00e3o, bombeamento, recircula\u00e7\u00e3o ou atomiza\u00e7\u00e3o. A p\u00e1gina do produto indica que \u00e9 necess\u00e1ria uma incorpora\u00e7\u00e3o com alto cisalhamento e recomenda adicion\u00e1-lo ao co-solvente antes da fase de abras\u00e3o\/moagem. Prepare uma amostra de controle devidamente incorporada, em vez de avali\u00e1-la com base em uma adi\u00e7\u00e3o tardia a um lote j\u00e1 finalizado.<\/p>\n

Registre a altura e a dissipa\u00e7\u00e3o da espuma, bolhas na pel\u00edcula \u00famida, poros ap\u00f3s a cura, ind\u00edcios de densidade ou ar arrastado e a apar\u00eancia. O excesso de antiespumante ou a baixa compatibilidade podem causar crateras, opacidade, perda de brilho ou altera\u00e7\u00f5es na ades\u00e3o; portanto, o n\u00edvel m\u00ednimo aceit\u00e1vel \u00e9 geralmente a melhor op\u00e7\u00e3o.<\/p>\n

Utilize o 3467 apenas por motivos de compatibilidade e vaz\u00e3o<\/h2>\n

Tela 3467, quando o substrato j\u00e1 est\u00e1 umedecido e o problema restante \u00e9 a uniformidade do filme ou a compatibilidade. Sua p\u00e1gina p\u00fablica aborda sistemas \u00e0 base de \u00e1gua e enfatiza a compatibilidade em detrimento da sensa\u00e7\u00e3o ao toque. Como a linha de produtos \u00e0 base de \u00e1gua publicada \u00e9 ampla, utilize uma pequena escala alinhada internamente, em vez de considerar o valor superior como padr\u00e3o.<\/p>\n

N\u00e3o misture esse produto aleatoriamente com outros aditivos: a p\u00e1gina indica uma precau\u00e7\u00e3o contra misturas inadequadas. Teste-o sozinho primeiro e, em seguida, avalie qualquer combina\u00e7\u00e3o necess\u00e1ria na ordem exata de adi\u00e7\u00e3o.<\/p>\n

Elaborar um ensaio espec\u00edfico para cada substrato<\/h2>\n
    \n
  1. Trave o substrato.<\/strong> Utilize o mesmo tipo de pol\u00edmero, pr\u00e9-tratamento, limpeza, idade e geometria.<\/li>\n
  2. Fabrica\u00e7\u00e3o de fechaduras.<\/strong> Ordem de adi\u00e7\u00e3o, cisalhamento, temperatura, pH, s\u00f3lidos e tempo de reten\u00e7\u00e3o.<\/li>\n
  3. Bloquear aplicativo.<\/strong> Viscosidade de reten\u00e7\u00e3o, atomiza\u00e7\u00e3o ou redu\u00e7\u00e3o de n\u00edvel, forma\u00e7\u00e3o de filme \u00famido, evapora\u00e7\u00e3o instant\u00e2nea e cura.<\/li>\n
  4. Compare um mecanismo.<\/strong> Run a blank plus a short supplier-supported ladder for only the relevant route.<\/li>\n
  5. Age the panels.<\/strong> Repeat adhesion and appearance after cure, water exposure, and the customer\u2019s recoat window.<\/li>\n<\/ol>\n

    Measure adhesion and water resistance with appearance<\/h2>\n

    ASTM D823<\/a> describes practices for producing uniform coating films on test panels. ASTM D870<\/a> covers controlled water-immersion resistance and cautions against equating laboratory duration directly with natural exposure. For plastic-specific tape testing, ASTM F1842<\/a> adapts tape adhesion for membrane-switch plastic substrates; confirm whether it fits the actual part and specification.<\/p>\n

    Approve against the customer\u2019s required plastic, pretreatment, cure, film thickness, adhesion method, water or chemical exposure, gloss, color, haze, flexibility, recoat, blocking, and storage window. A smooth panel that fails aged adhesion is not a passing formulation.<\/p>\n

    Common selection errors<\/h2>\n

    Using a feel additive as the default third route<\/h3>\n

    CHLUMIFE\u00ae 3166 is not a first-choice route here: its product page warns of pinholes, whitening, and foam stabilization. Surface feel should be optimized only after wetting, air release, adhesion, and recoat are secure.<\/p>\n

    Calling every hole a wetting defect<\/h3>\n

    Map defect timing and location. Immediate retraction suggests wetting or contamination; bubbles emerging during flash or cure point toward entrained air, outgassing, or process conditions.<\/p>\n

    Approving only fresh adhesion<\/h3>\n

    Plastic coatings can change after water exposure, thermal cycling, or time. Include the customer\u2019s aged condition and inspect whether failure occurs at the plastic\/coating interface or between coats.<\/p>\n

    Related application guides<\/h2>\n

    Use the broader plastic coating guide<\/a> for cross-technology selection, the pinhole diagnostic guide<\/a> for bubble and outgassing separation, or the wetting additive guide<\/a> when substrate entry is the confirmed failure.<\/p>\n

    Request a waterborne plastic coating shortlist<\/h2>\n

    Send the plastic family and grade, molded-part geometry, cleaning and pretreatment, resin, pigments\/fillers, pH and solids, current additives, manufacture shear, application method, film build, flash\/cure, defect photos, and adhesion\/recoat requirements. Ask Longchang Chemical to compare WD-D545, DF-D9904BR, or 3467<\/strong><\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

    A practical CHLUMICRYL\u00ae buyer guide for waterborne plastic coatings that separates difficult-substrate wetting, water-based microbubble control, and final-surface feel or scratch-balance work.<\/p>","protected":false},"author":6,"featured_media":10828,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"\nWaterborne Plastic Coating Additives: Wetting & Foam<\/title>\n<meta name=\"description\" content=\"Choose waterborne plastic coating additives for substrate wetting, process microfoam or surface compatibility. 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