{"id":10542,"date":"2026-07-10T21:18:02","date_gmt":"2026-07-10T21:18:02","guid":{"rendered":"https:\/\/longchangchemical.com\/epoxy-floor-coating-additive-selection\/"},"modified":"2026-07-10T21:21:27","modified_gmt":"2026-07-10T21:21:27","slug":"epoxy-floor-coating-additive-selection","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/zh\/epoxy-floor-coating-additive-selection\/","title":{"rendered":"How to Choose Surface Additives for Epoxy Floor Coatings"},"content":{"rendered":"<p><strong>\u5feb\u901f\u56de\u7b54\uff1a<\/strong> epoxy floor coating buyers usually lose time when they compare every silicone additive as if it solves the same first problem. <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife-3308\/\">CHLUMIFE\u00ae 3308<\/a> should move up first when the project is clearly an <strong>epoxy-floor topcoat or self-leveling surface-control job<\/strong> and the team wants one route already positioned for <strong>better feel, scratch resistance, leveling, substrate wetting, pinhole prevention, surface smoothness, wear resistance, and defoaming help<\/strong>. <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife-3166\/\">CHLUMIFE\u00ae 3166<\/a> belongs earlier when the buyer needs a <strong>broader dry-feel and appearance-balance route<\/strong> that can support <strong>surface-tension control, substrate wettability, smoothness, scratch resistance, anti-blocking, leveling, and gloss<\/strong>. <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife3307x-organic-silicone-leveling-agent-scratch-resistant-leveling-agent\/\">CHLUMIFE\u00ae 3307X<\/a> should move up first when the floor already applies acceptably but the cured film still needs a more deliberate <strong>abrasion and scratch-resistance answer after film formation<\/strong>, especially when <strong>recoatability remains important<\/strong>.<\/p>\n<p>That is the commercially useful split. This page is not another generic floor-coating article. It is a buyer-selection page for teams deciding which surface-additive route deserves the first sample round in epoxy floor coating work.<\/p>\n<h2>Why this page deserves to exist beside the broader CHLUMICRYL\u00ae branch<\/h2>\n<p>\u9f99\u660c\u5df2\u7ecf\u6709\u4e86\u4e0a\u7ebf\u9875\u9762 <a href=\"https:\/\/longchangchemical.com\/zh\/chlumicryl-coating-ink-additives\/\">CHLUMICRYL\u00ae \u6d82\u5c42\u548c\u6cb9\u58a8\u6dfb\u52a0\u5242<\/a>, <a href=\"https:\/\/longchangchemical.com\/zh\/leveling-additives-coatings-inks\/\">\u627e\u5e73\u6dfb\u52a0\u5242<\/a>, <a href=\"https:\/\/longchangchemical.com\/zh\/scratch-resistant-additives-coatings-inks\/\">scratch-resistant additives<\/a>\uff0c \u548c <a href=\"https:\/\/longchangchemical.com\/zh\/coating-defect-additive-selection\/\">\u7f3a\u9677\u9a71\u52a8\u7684\u6dfb\u52a0\u5242\u9009\u62e9<\/a>. Those pages help buyers decide whether they are dealing with a leveling route, a scratch route, or another additive family.<\/p>\n<p>Epoxy floor coating teams usually face a tighter question after that. They already know the project lives in the surface-control lane. The next decision is narrower: <strong>should the first screen start with a direct epoxy-floor additive, a broader dry-feel and gloss-balancing route, or a more post-cure abrasion-focused route?<\/strong><\/p>\n<p>That narrower decision is worth its own page because floor coatings are rarely judged by one KPI alone. Buyers are usually balancing several requirements at once:<\/p>\n<ul>\n<li><strong>surface appearance and leveling<\/strong>,<\/li>\n<li><strong>scratch and abrasion resistance after cure<\/strong>,<\/li>\n<li><strong>feel and smoothness<\/strong>,<\/li>\n<li><strong>pinhole or defoaming behavior during application<\/strong>\uff0c \u548c<\/li>\n<li><strong>whether another coat or repair coat still has to wet and hold properly<\/strong>.<\/li>\n<\/ul>\n<p>That is why a floor-coating-specific selection page is more useful than sending every buyer back to a broad function page.<\/p>\n<h2>What the current company-supported facts already separate<\/h2>\n<p>The current Longchang product pages already create a meaningful split:<\/p>\n<ul>\n<li><strong>CHLUMIFE\u00ae 3308<\/strong> is described as a <strong>polyether-modified polysiloxane<\/strong> \u548c <strong>better feel and scratch resistance than BD-3307<\/strong>. Longchang says it is <strong>especially suitable for epoxy floor coatings<\/strong>, supports <strong>solvent-based and solvent-free two-component systems<\/strong>, and says it promotes <strong>leveling, substrate wetting, pinhole prevention, surface smoothness, wear resistance, and defoaming properties<\/strong>. The recommended dosage is <strong>0.1% \u81f3 1.0%<\/strong>. The current application table marks <strong>UV and solvent systems<\/strong> as applicable and <strong>\u6c34\u57fa\u7cfb\u7edf<\/strong> as not applicable.<\/li>\n<li><strong>CHLUMIFE\u00ae 3166<\/strong> is positioned as an additive for controlling <strong>surface tension in liquid-phase materials<\/strong>, with the product page stating that its most notable feature is <strong>excellent dry feel<\/strong>. Longchang also supports <strong>reduced surface tension, improved substrate wettability, surface smoothness, scratch resistance, anti-blocking, leveling, gloss improvement, and prevention of B\u00e9nard vortices<\/strong>. The current page supports it across <strong>\u7d2b\u5916\u3001\u6eb6\u5242\u548c\u6c34\u57fa\u4f53\u7cfb<\/strong>\u63a8\u8350\u5242\u91cf\u4e3a <strong>0.05% \u81f3 1.0%<\/strong>, while warning that similar products can lead to <strong>pinholes, whitening, or foam-stabilizing effects<\/strong>.<\/li>\n<li><strong>CHLUMIFE\u00ae 3307X<\/strong> is positioned as an <strong>organic silicone leveling agent and scratch-resistant additive<\/strong> designed to improve the <strong>abrasion resistance and scratch resistance of resin films after formation<\/strong>. Longchang also supports <strong>surface smoothness and leveling<\/strong>, explicitly notes that <strong>recoatability is prioritized<\/strong>, and recommends <strong>0.1% \u81f3 1.0%<\/strong> dosage. The product page also recommends preparing a <strong>12.5% solution in solvent<\/strong> before use and marks <strong>UV and solvent systems<\/strong> as applicable while excluding <strong>\u6c34\u57fa\u7cfb\u7edf<\/strong>.<\/li>\n<\/ul>\n<p>That difference is enough to justify a dedicated epoxy-floor selection page.<\/p>\n<h2>\u5feb\u901f\u5bf9\u6bd4\u8868\uff1a\u54ea\u6761\u8def\u7ebf\u5e94\u8be5\u4f18\u5148\u663e\u793a\uff1f<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u89c2\u5bdf\u5230\u7684\u4e70\u5bb6\u4f18\u5148<\/th>\n<th>\u6700\u4f73\u9996\u9009\u8def\u7ebf<\/th>\n<th>Why it belongs first<\/th>\n<th>\u4e3b\u8981\u89c2\u5bdf\u70b9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Direct epoxy-floor surface-control work that needs feel, leveling, wetting, pinhole control, and scratch balance together<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife-3308\/\">CHLUMIFE\u00ae 3308<\/a><\/td>\n<td>Longchang explicitly says it is especially suitable for epoxy floor coatings and supports leveling, wetting, pinhole prevention, smoothness, wear resistance, and defoaming help<\/td>\n<td>Current application table excludes water-based systems<\/td>\n<\/tr>\n<tr>\n<td>Broader dry-feel, smoothness, gloss, anti-blocking, and scratch-control balance across more than one system window<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife-3166\/\">CHLUMIFE\u00ae 3166<\/a><\/td>\n<td>Longchang supports excellent dry feel plus surface-tension control, substrate wettability, smoothness, scratch resistance, anti-blocking, leveling, and gloss across UV, solvent, and water-based systems<\/td>\n<td>Qualification should still watch for pinholes, whitening, or foam stabilization<\/td>\n<\/tr>\n<tr>\n<td>Cured floor film still needs stronger abrasion and scratch resistance, but recoating should stay in view<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife3307x-organic-silicone-leveling-agent-scratch-resistant-leveling-agent\/\">CHLUMIFE\u00ae 3307X<\/a><\/td>\n<td>Longchang positions it around abrasion and scratch resistance after film formation and explicitly says recoatability is prioritized<\/td>\n<td>Not for water-based systems, and solvent pre-dilution is recommended before use<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>When CHLUMIFE\u00ae 3308 is the better first move<\/h2>\n<p>3308 should move to the front when the buyer already knows the project is a <strong>direct epoxy-floor coating job<\/strong> and wants one route whose public positioning already matches that application. This is the cleanest commercial separation on the current Longchang page. The product is not only presented as a general surface additive. It is explicitly described as <strong>especially suitable for epoxy floor coatings<\/strong>.<\/p>\n<p>That matters because epoxy-floor buyers usually need more than a generic claim about scratch resistance. They need a route that can help the coating lay down properly while still protecting the finished surface. Longchang\u2019s public page for 3308 supports exactly that mix: <strong>leveling, improved substrate wetting, pinhole prevention, surface smoothness, better wear resistance, and defoaming properties<\/strong>, alongside the note that it offers <strong>better feel and scratch resistance than BD-3307<\/strong>.<\/p>\n<p>3308 deserves earlier review when:<\/p>\n<ul>\n<li>the project is already centered on <strong>epoxy floor coatings<\/strong>,<\/li>\n<li>the team wants one additive that can support <strong>appearance plus durability<\/strong> instead of only one of them,<\/li>\n<li><strong>pinhole reduction and defoaming behavior<\/strong> matter during application, or<\/li>\n<li>the buyer wants a route that is already framed around <strong>solvent-based or solvent-free two-component systems<\/strong>.<\/li>\n<\/ul>\n<p>The main limitation is system boundary. Longchang\u2019s current application table supports <strong>UV and solvent systems<\/strong> and excludes <strong>\u6c34\u57fa\u7cfb\u7edf<\/strong>. That means 3308 is strongest when the floor-coating program genuinely lives in that non-aqueous epoxy window rather than in a water-based screening path.<\/p>\n<h2>When CHLUMIFE\u00ae 3166 is the better first move<\/h2>\n<p>3166 belongs earlier when the buyer needs a <strong>broader balancing route<\/strong> rather than the most application-specific epoxy-floor route. Longchang positions it around <strong>surface-tension control<\/strong>, and the same page says its most notable feature is <strong>excellent dry feel<\/strong>. It also supports a wider bundle of surface outcomes: <strong>substrate wettability, surface smoothness, scratch resistance, anti-blocking, leveling, gloss improvement, and prevention of B\u00e9nard vortices<\/strong>.<\/p>\n<p>That makes 3166 commercially useful when the lab is still trying to balance several top-layer priorities instead of solving one single defect. In floor coatings, that often means the buyer wants a route that can help the film look better, feel cleaner, and still hold acceptable scratch control without being locked into one narrow application story too early.<\/p>\n<p>3166 deserves earlier review when:<\/p>\n<ul>\n<li>the buyer wants a stronger <strong>dry-feel and gloss-balance route<\/strong>,<\/li>\n<li>the project may still compare <strong>\u7d2b\u5916\u3001\u6eb6\u5242\u548c\u6c34\u57fa<\/strong> windows,<\/li>\n<li><strong>anti-blocking and smoothness<\/strong> matter alongside scratch handling, or<\/li>\n<li>the team wants a route that can stay useful beyond one floor-coating subcase.<\/li>\n<\/ul>\n<p>The caution should stay visible. Longchang notes that similar products may produce <strong>pinholes, whitening, or a stabilizing effect on foam<\/strong>. So 3166 is not the lazy default. It is the broader balance route when that broader balance matters enough to justify more careful qualification.<\/p>\n<h2>When CHLUMIFE\u00ae 3307X is the better first move<\/h2>\n<p>3307X becomes more relevant when the epoxy floor already applies acceptably, but the <strong>cured film<\/strong> still shows too much rubbing damage, abrasion marking, or scratch visibility. This is its strongest separation point. Longchang does not frame 3307X mainly as a wet-stage correction tool. It frames it as a route designed to improve the <strong>abrasion resistance and scratch resistance of resin films after formation<\/strong>.<\/p>\n<p>That makes 3307X the stronger first route when:<\/p>\n<ul>\n<li>the biggest complaint appears <strong>after cure<\/strong>, not only during application,<\/li>\n<li>the finished floor still needs better <strong>abrasion or scratch retention<\/strong>,<\/li>\n<li><strong>recoatability<\/strong> remains important in the program, or<\/li>\n<li>the system is clearly <strong>UV or solvent-based<\/strong> rather than water-based.<\/li>\n<\/ul>\n<p>The practical watchpoint is handling. Longchang recommends diluting it into a <strong>12.5% solution with solvent<\/strong> before use. The current application table also excludes <strong>\u6c34\u57fa\u7cfb\u7edf<\/strong>. So this route makes the most sense when the buyer is already committed to a non-aqueous floor-coating window and wants a more deliberate post-cure durability screen.<\/p>\n<h2>\u4e70\u5bb6\u5728\u7d22\u53d6\u6837\u54c1\u524d\u5e94\u8be5\u5982\u4f55\u9009\u62e9<\/h2>\n<h3>1. Start with whether the first problem is application-stage or cured-film-stage<\/h3>\n<p>If the floor coating needs help during laydown, wetting, pinhole control, and surface balance, 3308 deserves much earlier attention. If the cured film is the bigger pain point, 3307X usually moves up. If the team still needs one broader balancing route, 3166 becomes more attractive.<\/p>\n<h3>2. Keep the system boundary visible<\/h3>\n<p>3308 and 3307X are not water-based routes on their current public application tables. 3166 is broader. That matters immediately if the customer line is still comparing solvent, UV, and water-based options.<\/p>\n<h3>3. Separate dry feel from direct epoxy-floor suitability<\/h3>\n<p>3166 is strong when dry feel, smoothness, gloss, and broader balance matter. 3308 is stronger when the buyer wants a route already pointed straight at epoxy floor coatings. Those are related but not identical selection jobs.<\/p>\n<h3>4. Do not ignore downstream recoating or repair needs<\/h3>\n<p>Epoxy floor systems are often judged later by maintenance, repair, or next-coat behavior. Longchang explicitly gives 3307X a recoatability advantage, so that should be screened early when it matters.<\/p>\n<h3>5. Keep the first lab round short<\/h3>\n<p>For many buyers, the cleanest first round is one <strong>3308-led direct epoxy-floor route<\/strong>\uff0c \u4e00 <strong>3166-led broader balance route<\/strong>\uff0c\u4ee5\u53ca\u4e00\u4e2a <strong>3307X-led post-cure scratch route<\/strong>. That usually creates a faster commercial answer than screening too many nearby silicone additives at once.<\/p>\n<h2>\u672c\u9875\u63a8\u8350\u7684\u9f99\u660c\u8def\u7ebf<\/h2>\n<ul>\n<li><strong>Direct epoxy-floor route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife-3308\/\">CHLUMIFE\u00ae 3308<\/a><\/li>\n<li><strong>Broader dry-feel and gloss-balance route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife-3166\/\">CHLUMIFE\u00ae 3166<\/a><\/li>\n<li><strong>Post-cure abrasion route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumife3307x-organic-silicone-leveling-agent-scratch-resistant-leveling-agent\/\">CHLUMIFE\u00ae 3307X<\/a><\/li>\n<li><strong>\u96c6\u7fa4\u6982\u89c8\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/chlumicryl-coating-ink-additives\/\">CHLUMICRYL\u00ae \u6d82\u5c42\u548c\u6cb9\u58a8\u6dfb\u52a0\u5242<\/a><\/li>\n<li><strong>\u76f8\u5173\u529f\u80fd\u9875\u9762\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/leveling-additives-coatings-inks\/\">\u5982\u4f55\u9009\u62e9\u6d82\u6599\u548c\u6cb9\u58a8\u7684\u6d41\u5e73\u52a9\u5242<\/a><\/li>\n<li><strong>\u76f8\u5173\u529f\u80fd\u9875\u9762\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/scratch-resistant-additives-coatings-inks\/\">How to Choose Scratch-Resistant Additives for Coatings and Inks<\/a><\/li>\n<li><strong>Related defect page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/coating-defect-additive-selection\/\">\u6da6\u6e7f\u5242\u3001\u6d41\u5e73\u5242\u3001\u6d88\u6ce1\u5242\u548c\u6c1f\u8868\u9762\u6d3b\u6027\u5242<\/a><\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>Which additive should I screen first for epoxy floor coatings?<\/h3>\n<p>If the project is clearly an epoxy-floor job and the team wants one route that supports feel, leveling, wetting, pinhole control, smoothness, wear resistance, and defoaming help together, 3308 deserves earlier review because Longchang explicitly says it is especially suitable for epoxy floor coatings.<\/p>\n<h3>When is 3166 a better first route than 3308?<\/h3>\n<p>3166 is a better first route when the buyer wants a broader dry-feel, smoothness, gloss, anti-blocking, and scratch-control balance, or when the program still needs a route that can travel across UV, solvent, and water-based systems.<\/p>\n<h3>When should 3307X move ahead of 3308?<\/h3>\n<p>3307X should move ahead when the floor film already applies acceptably but still needs stronger abrasion and scratch resistance after cure, especially when recoatability matters in the project.<\/p>\n<h3>Are these three products interchangeable?<\/h3>\n<p>No. Their public company-supported positioning is different enough that buyers should not treat them as drop-in substitutes. One leads with direct epoxy-floor fit, one with broader dry-feel and gloss balance, and one with post-cure abrasion resistance plus recoatability priority.<\/p>\n<h2>Need a tighter epoxy-floor shortlist?<\/h2>\n<p>If your floor-coating project is stuck between better leveling, cleaner appearance, lower defect pressure, and stronger scratch or abrasion resistance after cure, start by deciding whether the real first job is <strong>direct epoxy-floor balance<\/strong>, <strong>broader dry-feel and gloss control<\/strong>\uff0c \u6216\u8005 <strong>post-cure durability with recoatability<\/strong>. That usually shows much faster whether 3308, 3166, or 3307X deserves the first sample round.<\/p>","protected":false},"excerpt":{"rendered":"<p>A practical B2B selection guide for epoxy floor coating teams comparing CHLUMIFE\u00ae 3308, CHLUMIFE\u00ae 3166, and CHLUMIFE\u00ae 3307X for leveling, surface feel, scratch resistance, defoaming help, and recoatability.<\/p>","protected":false},"author":6,"featured_media":10541,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[168],"tags":[],"class_list":["post-10542","post","type-post","status-publish","format-gallery","has-post-thumbnail","hentry","category-water-treatment","post_format-post-format-gallery"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Epoxy Floor Coating Additive Selection: 3308 vs 3166 vs 3307X<\/title>\n<meta name=\"description\" content=\"Learn how 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