{"id":1821,"date":"2026-09-08T16:03:50","date_gmt":"2026-09-08T08:03:50","guid":{"rendered":"https:\/\/bastone-petrochem.com\/?post_type=product&#038;p=1821"},"modified":"2026-09-09T09:01:58","modified_gmt":"2026-09-09T01:01:58","slug":"na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp","status":"publish","type":"product","link":"https:\/\/bastone-petrochem.com\/es\/product\/na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp\/","title":{"rendered":"NA-4A Agente Nucleante de Polipropileno \u2014 Nucleador Clarificante de Alta Eficiencia para PP"},"content":{"rendered":"<p>NA-4A es un agente nucleante org\u00e1nico en forma de polvo dise\u00f1ado para polipropileno isot\u00e1ctico \u2014 homopol\u00edmero, copol\u00edmero aleatorio y grados de copol\u00edmero de impacto por igual. BASTONE produce NA-4A internamente como una formulaci\u00f3n patentada, no como una importaci\u00f3n reenvasada. Cada lote pasa por el flujo de trabajo de formulaci\u00f3n, mezclado y control de calidad del propio grupo antes de su liberaci\u00f3n.<\/p>\n<p>El mecanismo es nucleaci\u00f3n heterog\u00e9nea. Cuando NA-4A se dispersa en un fundido de PP, proporciona una densa poblaci\u00f3n de sitios de nucleaci\u00f3n, por lo que la cristalizaci\u00f3n comienza a una temperatura m\u00e1s alta y produce muchos m\u00e1s cristalitos de tama\u00f1o mucho menor. Las esferulitas finas y uniformemente distribuidas son lo que ofrece el conjunto de propiedades que los compradores realmente desean: un equilibrio rigidez-tenacidad que el PP convencional no puede alcanzar sin sacrificar uno por el otro.<\/p>\n<p>Los datos de comparaci\u00f3n internos de BASTONE ilustran el efecto. En una resina base en polvo de ICP (MI = 28) con un paquete antioxidante est\u00e1ndar, 500 ppm de NA-4A eleva el m\u00f3dulo de flexi\u00f3n al rango de 1.200\u20131.300 MPa, mientras que la resistencia al impacto Izod con entalla a 23 \u00b0C se mantiene en la parte superior de la banda de prueba de 4\u201312 kJ\/m\u00b2. Los moldeadores normalmente sacrifican una por la otra. NA-4A mejora ambas.<\/p>\n<p>El comportamiento de contracci\u00f3n importa igual de mucho para cualquiera que mantenga tolerancias ajustadas. NA-4A reduce la contracci\u00f3n total de moldeo y \u2014 m\u00e1s importante a\u00fan \u2014 acerca la contracci\u00f3n en direcci\u00f3n de la m\u00e1quina y en direcci\u00f3n transversal. A 500 ppm y 800 ppm, el \u00edndice de isotrop\u00eda a siete d\u00edas se sit\u00faa cerca de 1,0, lo que significa que la pieza se contrae casi por igual a lo largo de ambos ejes. La deformaci\u00f3n en tapas de pared delgada, paneles de electrodom\u00e9sticos y molduras automotrices planas disminuye en consecuencia. En las pruebas comparativas de BASTONE, NA-4A sigue la misma direcci\u00f3n que HPN-1 con cargas comparables mientras opera a un costo de entrega menor desde una base de producci\u00f3n china.<\/p>\n<p>Una cristalizaci\u00f3n m\u00e1s r\u00e1pida tambi\u00e9n significa un moldeo m\u00e1s r\u00e1pido. Una mayor temperatura de inicio de cristalizaci\u00f3n permite que la pieza se solidifique antes en la cavidad, reduciendo el tiempo de enfriamiento y aumentando la producci\u00f3n por hora de prensa. Para l\u00edneas de tapas y cierres o art\u00edculos para el hogar de alto volumen, las ganancias de tiempo de ciclo de ese tipo a menudo justifican el costo del aditivo por s\u00ed solas. NA-4A cuenta con autorizaci\u00f3n de seguridad para contacto con alimentos, por lo que el mismo grado sirve para aplicaciones de envasado y servicio de alimentos sin una calificaci\u00f3n separada.<\/p>","protected":false},"excerpt":{"rendered":"<p>NA-4A es un agente nucleante alfa de alta eficiencia para polipropileno, fabricado por BASTONE en su planta de producci\u00f3n de Hangzhou y suministrado mundialmente a trav\u00e9s de Zhejiang Bastone Technology Co., Ltd.<br \/>\nDosificado al 0.04%\u20130.3%, NA-4A refina el tama\u00f1o de las esferulitas del PP, eleva la temperatura de cristalizaci\u00f3n y acorta los tiempos de ciclo en moldeo por inyecci\u00f3n, extrusi\u00f3n y moldeo por compresi\u00f3n.<br \/>\nLos usos finales t\u00edpicos incluyen carcasas de lavadoras y peque\u00f1os electrodom\u00e9sticos, compuestos de PP modificado para automoci\u00f3n, piezas el\u00e9ctricas y electr\u00f3nicas, tapas de botellas de pl\u00e1stico y art\u00edculos para el hogar en contacto con alimentos.<\/p>","protected":false},"featured_media":1807,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[62],"product_tag":[],"class_list":["post-1821","product","type-product","status-publish","has-post-thumbnail","product_cat-masterbatch","first","instock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>NA-4A Polypropylene Nucleating Agent | China Supplier<\/title>\n<meta name=\"description\" content=\"NA-4A polypropylene nucleating agent powder, dosed 0.04\u20130.3% (500 ppm). Raises crystallization temp, cuts shrinkage anisotropy, food-contact grade.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bastone-petrochem.com\/es\/product\/na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NA-4A Polypropylene Nucleating Agent | China Supplier\" \/>\n<meta property=\"og:description\" content=\"NA-4A polypropylene nucleating agent powder, dosed 0.04\u20130.3% (500 ppm). Raises crystallization temp, cuts shrinkage anisotropy, food-contact grade.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bastone-petrochem.com\/es\/product\/na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp\/\" \/>\n<meta property=\"og:site_name\" content=\"BASTONE\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-09T01:01:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/09\/na-4a-nucleating-agent-main-product-photo.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/bastone-petrochem.com\/product\/na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp\/\",\"url\":\"https:\/\/bastone-petrochem.com\/product\/na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp\/\",\"name\":\"NA-4A Polypropylene Nucleating Agent | China Supplier\",\"isPartOf\":{\"@id\":\"https:\/\/bastone-petrochem.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/bastone-petrochem.com\/product\/na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/bastone-petrochem.com\/product\/na-4a-polypropylene-nucleating-agent-high-efficiency-clarifying-nucleator-for-pp\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/bastone-petrochem.com\/wp-content\/uploads\/2026\/09\/na-4a-nucleating-agent-main-product-photo.webp\",\"datePublished\":\"2026-09-08T08:03:50+00:00\",\"dateModified\":\"2026-09-09T01:01:58+00:00\",\"description\":\"NA-4A polypropylene nucleating agent powder, dosed 0.04\u20130.3% (500 ppm). 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