GMS-9713 Adhesion Polyurethane Acrylate for Melamine Board and Metal Primers
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|---|---|
| Categories | UV Resins & Raw Materials |
| Brand | Gomin Industry Coating Wholesale Manufacturer |
| Product Specifications | GMS-9713 |
| Product Type | UV-Curable Resin (Oligomer) |
| Model | GMS-9713 |
| Chemistry | Polyurethane Acrylate (Bifunctional) |
| Functionality | 2 |
| Solid Content | 100% (solvent-free) |
| Viscosity | 4,000–10,000 mPa·s @ 25 °C |
| Acid Value | ≤ 5 mg KOH/g |
| Appearance | Thick and transparent liquid |
| Adhesion To | Metal, melamine board, ceramics |
| Peel Strength | High (TDS feature) |
| Water Boiling Resistance | Outstanding (TDS feature) |
| Packaging | 20 kg plastic barrel |
| Shelf Life | 12 months at 5–35 °C, avoid direct sunlight |
GOMIN · UV RESINS & RAW MATERIALS
GMS-9713 Adhesion Polyurethane Acrylate for Melamine Board and Metal Primers
A solvent-free, bifunctional polyurethane acrylate built for the one problem that decides whether a UV system survives on difficult substrates: getting the first film to stay on. Formulated for adhesion primers on melamine-faced board, metal and ceramics, with high peel strength and outstanding water boiling resistance stated in the TDS.
What Is GMS-9713?
GMS-9713 is a bifunctional polyurethane acrylate supplied at 100 % solids, with a working viscosity of 4,000–10,000 mPa·s at 25 °C and an acid value of 5 mg KOH/g or below. The TDS positions it squarely as an adhesion primer: one for melamine-faced board, one for metal substrates, with ceramics named among the substrates it bonds to.
That positioning is worth understanding, because it is not a marketing convenience. In a UV-cured system, the primer is where the whole stack is judged. Melamine-faced board — a decor paper impregnated with melamine resin, pressed onto a core — presents a surface that is highly crosslinked, chemically inert and often still carrying release agent from the press. There is no grain to key into and nothing for a solvent to bite on. A metal panel presents the opposite problem: an oxide layer, mill oil and a coefficient of expansion that differs sharply from the coating. In both cases the primer must wet the surface completely, form real interfacial interaction, and then cure without building so much shrinkage stress that it tears itself free.
GMS-9713 is built for that sequence. Functionality 2 keeps the network from becoming brittle and over-stressed; the polyurethane segment contributes toughness and the polar interaction that adhesion depends on; good pigment wetting lets a thin, filled primer film make full contact across the panel; and excellent leveling keeps the film continuous, because a primer that dewets is a primer that fails.
One honest boundary: the TDS lists the chemistry as polyurethane acrylate with functionality 2, but does not classify it as aliphatic or aromatic. So we make no claim about non-yellowing or long-term light stability either way. If color stability of the cured film is on your specification, raise it in your enquiry and our team will confirm the backbone type — or point you to an aliphatic grade such as GMT-6050A rather than let you discover the difference on a production run.
Why Primers Made with GMS-9713 Hold
Adhesion to the substrates that usually reject UV
The TDS lists good adhesion to metal, melamine board and ceramics — the three surfaces where a standard acrylate primer most often fails a cross-hatch or peel test. A bifunctional backbone keeps crosslink density moderate, so the film stays tough and compliant at the interface instead of pulling itself off as it cures.
High peel strength and outstanding water boiling resistance
Peel strength tells you whether the film survives cutting, edge-banding, drilling and shipping. Boiling water immersion is the acceptance test behind kitchen cabinet doors, appliance panels and wet-area furniture. Both are stated product features in the TDS, not marketing lines.
Leveling and pigment wetting at 100 % solids
A primer has to be thin, even and defect-free, because every pinhole becomes a delamination point. Excellent leveling and good pigment wetting — both in the TDS — let you run a low film weight uniformly and tint the primer when the line needs a sanding indicator or a hiding layer.
Where GMS-9713 Earns Its Place
| Substrate | Why it is difficult | What GMS-9713 contributes |
|---|---|---|
| Melamine-faced board | Highly crosslinked, chemically inert decor surface with low surface energy and possible release-agent residue; nothing to key into and nothing to dissolve | Good adhesion stated in the TDS, combined with strong wetting and excellent leveling so the primer makes full contact and stays continuous on a thin film |
| Metal substrates | Oxide layer, mill oil and a thermal expansion rate very different from the coating; stress concentrates at the interface | Adhesion to metal stated in the TDS, with the tough, lower-stress film profile of a bifunctional urethane acrylate and high peel strength to survive forming and handling |
| Ceramics | Smooth, hard, often sealed surface; poor mechanical keying | Listed among the substrates with good adhesion in the TDS — the third surface this grade is documented on |
| Wet-service end products | Kitchen doors, appliance panels and bathroom furniture are boiled, steamed and cleaned with detergents | Outstanding water boiling resistance stated in the TDS, which is the acceptance test behind most wet-service specifications |
Where it is not the answer
- Elastic veneer topcoats that follow wood movement — that is a job for an elastic aromatic urethane acrylate such as GMS-6136, not for a bifunctional adhesion primer.
- White or heavily filled topcoats — a high TiO₂ load needs a grade built around extremely low curing shrinkage, such as our odor-free polyester acrylate GMS-3323D.
- Color-critical exterior surfaces — the TDS does not classify this resin as aliphatic, so ask about GMT-6050A for light-stable work instead.
Technical Specifications
| Property | Specification | Remark |
|---|---|---|
| Product name | Adhesion polyurethane resin | — |
| Product code | GMS-9713 | — |
| Chemistry | Polyurethane acrylate | Functionality 2 |
| Appearance | Thick and transparent liquid | Visual |
| Viscosity @ 25 °C | 4,000–10,000 mPa·s | Ambient handling; quoted at 25 °C, not comparable with 60 °C figures |
| Solid content | 100 % | Solvent-free, no volatile to flash off |
| Acid value | ≤ 5 mg KOH/g | Low free carboxyl content |
| Adhesion | Metal, melamine board, ceramics | Substrates named in the TDS |
| Peel strength | High | Stated in TDS product features |
| Water boiling resistance | Outstanding | Stated in TDS product features |
| Leveling | Excellent | Stated in TDS product features |
| Pigment wetting | Good | Stated in TDS product features |
| Packaging | 20 kg plastic barrel | — |
| Storage | 12 months at 5–35 °C, avoid direct sunlight | Keep container closed |
All figures quoted from the GMS-9713 TDS. Peel strength values and boiling test conditions are not published in the TDS — request the current certificate of analysis and confirm the test protocol that matches your customer specification.
Formulation & Processing Guidance
The resin is straightforward to handle — 100 % solids, no solvent, normal liquid dosing. What decides success is what happens at the interface and in the first few microns of film. The guidance below is a starting point, not a production formula.
Step 1 — Preparation carries the adhesion
On melamine, remove dust and press release residue and scuff the face if the line allows it. On metal, degrease thoroughly and coat soon after cleaning so the surface does not re-oxidize. On ceramics, light abrasion is usually worth more than an extra adhesion promoter.
Step 2 — Thin, continuous, fully cured
An adhesion primer works at low film weight, but not at the cost of continuity. Confirm the bottom of the film is cured, not just the top — a primer that is hard on the surface and under-cured beneath passes a fingernail test and fails a peel test after a week.
Step 3 — Match the photoinitiator to the film
A filled or tinted primer scatters UV, so through-cure is a photoinitiator decision rather than a lamp power decision. Choose a package designed for pigmented films and confirm the dose at line speed; over-curing a primer to force adhesion usually buys stress instead.
Dosage note: recommended loading for GMS-9713 is application-specific — the TDS gives no percentage figure and we do not invent one. Tell us your substrate, film weight and topcoat chemistry, and our technical team will reply with a starting range and a reference primer formulation.
Quality, Supply & Custom Formulation Support
Batch-controlled release
Viscosity, solid content and acid value checked against the TDS values on every batch, with a certificate of analysis issued for the shipment.
Documents on request
TDS and safety data sheet with every quotation; additional declarations for your compliance team on request.
Export packaging
20 kg plastic barrels, palletized and shrink-wrapped for sea freight, 12-month shelf life at 5–35 °C.
Formulation help, not just drums
Evaluation samples and hands-on help with substrate preparation, film weight and cure verification — the three variables that decide whether a primer holds.
Frequently Asked Questions
Why is it so hard to get a UV coating to stick to melamine board?
A melamine-faced board is a paper impregnated with melamine resin, cured under heat and pressure. The result is a dense, highly crosslinked, chemically inert surface with low surface energy, often carrying residual release agent from the press. A UV coating cannot mechanically key into it and cannot dissolve it either, so adhesion depends almost entirely on the primer's ability to wet the surface and form polar interaction with it — the job GMS-9713 is formulated for.
Which substrates does GMS-9713 cover?
The TDS names three: metal, melamine board and ceramics. Those are the substrates we will quote the product for without qualification. For MDF, veneer, glass, filled plastics or an unfamiliar alloy, treat it as a development project and send us samples — we will run adhesion work with you rather than assume the melamine result carries over.
What does outstanding water boiling resistance actually mean?
In practice it refers to a boiling water immersion test on the cured coated part, after which the film is checked for blistering, whitening, loss of gloss and delamination. The TDS states it as a product feature but does not publish the test condition, so confirm the time and temperature that match your customer's specification with our technical team, then verify the full system on your own parts.
Is GMS-9713 a primer or a topcoat?
The TDS positions it as an adhesion primer for melamine board and for metal substrates. A bifunctional polyurethane acrylate builds a moderately crosslinked, tough film with good wetting — exactly what an interface layer needs. For the visible wear surface above it, tell us the gloss, hardness and abrasion target and we will recommend a topcoat resin rather than pushing this one outside its intended role.
Does the TDS say whether this is an aliphatic or aromatic urethane acrylate?
No, and we will not guess. The GMS-9713 TDS lists the chemistry as polyurethane acrylate with functionality 2, without an aliphatic or aromatic classification, so we make no claim about light stability or non-yellowing either way. If color stability is a specification item, raise it in your enquiry and, if needed, we will propose an aliphatic grade such as GMT-6050A instead.
Test GMS-9713 on Your Own Substrate
Tell us the substrate and the adhesion failure you are fighting — we will send a 1 kg evaluation sample with the TDS, plus a starting primer formulation and the test sequence to run before scale-up.
Email: mesco@mescogroup.com.cn
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