Adhesion promoter for powder coatingsAdhesion class 1 or better · highly compatible with mainstream resins · easy to disperse, no extra dispersant
Markedly improves the bond between powder coatings and metals, plastics and other substrates, eliminating flaking and peeling, and bringing adhesion to class 1 or better per GB/T 9286; highly compatible with epoxy, polyester, acrylic and other mainstream resin systems.
- 🎯 Adhesion GB/T 9286 · class 1 or better
- 🧪 Highly compatible with epoxy / polyester / acrylic
- 🌡 Temperature range −40 ℃ ~ 150 ℃
- ✨ Easy to disperse · no extra dispersant
- Melting point
- 0 – 0 ℃
- Particle size D50
- 0 – 0 μm
- Thermal decomposition
- ≥ 0 ℃
- Acid value
- 0 – 0 mgKOH/g
Product features · the electrostatic powder booth
Charged particles fly to the substrate and the panel is progressively covered — no effect on levelling, gloss or weather resistance, no craters or pin-holes.
Strong adhesion boost
Improves the bond with metals, plastics and other substrates, solving flaking and peeling, with adhesion reaching GB/T 9286 class 1 or better.
Excellent compatibility
Highly compatible with epoxy, polyester and acrylic mainstream resins, without affecting levelling, gloss or weather resistance, avoiding craters and pin-holes.
Stable weather resistance
Heat- and humidity-resistant itself, it works stably from −40 ℃ ~ 150 ℃, keeping adhesion outdoors and in hot, demanding environments.
Easy to disperse
The pale-yellow powder blends evenly with other components, with no extra dispersant needed, simplifying production.
Technical data
Typical ex-works values; a COA accompanies every batch. Two columns mirror the original table.
| Test item | Specification | Test item | Specification |
|---|---|---|---|
| Appearance | Pale-yellow powder | Melting point (℃) | 85 ~ 95 |
| Moisture content (%) | ≤ 0.5 | Particle size (D50, μm) | 8 ~ 12 |
| Thermal decomposition (℃) | ≥ 250 | Acid value (mg KOH/g) | 15 ~ 25 |
Substrates · metal × non-metal
The two main substrate families in powder coating, fully covered for adhesion enhancement.
Cold-rolled steel · galvanised steel · aluminium alloy
Appliance housingsAutomotive partsHardware fittingsABS · PC/ABS and other plastics
Electrical housingsToysPowder-coating adhesion enhancementHow to use · three steps
Add at pre-mixing → apply as usual → cure without adjustment.
Dosage
We recommend 0.5% ~ 2.0% in the powder coating formulation (on total coating mass), adjusted for substrate, coating system and adhesion requirements; start with 1.0% on first use.
0.5–2.0%start at 1.0%Mixing
During pre-mixing add the product together with resin, curing agent, pigments and fillers into the mixing equipment (e.g. a high-speed mixer) to ensure even dispersion.
800–1200 r/min5–8 minApplication
Follow the usual powder coating process; curing conditions follow the coating itself, with no need to adjust curing temperature or time because of this additive.
Electrostatic sprayingFluidised-bed dippingNo curing adjustmentPacking, storage, safety · sample request
Submit the form and a technical consultant will contact you within 24 hours to arrange a sample.
Dosage at a glance
Packing · storage · shelf life
⚠ Safety and protection · notes
- Wear a dust mask and disposable gloves; avoid inhaling the powder or contacting the skin. If it gets into the eyes, rinse immediately with plenty of water and seek medical advice if needed.
- Not classified as a flammable or explosive hazardous material, but Never store or transport together with food or pharmaceuticals; handle gently to avoid damaged or leaking packaging.
- Always run a small-scale trial to verify adhesion and coating performance before use; lightly caked material can be crushed and used normally, but do not use if severely caked;
- test compatibility before combining with levelling agents, defoamers and the like to avoid adverse reactions.
01Product positioning
Name and positioning. The documentation page is titled "Adhesion Promoter for Powder Coatings R1880"; the Product Characteristics section records it as a light yellow powder used for adhesion enhancement in powder coating systems. (Data source: product handbook / official product data)
Product characteristics (quoted verbatim · four items): "1. Strong adhesion enhancement: it can significantly improve the bonding strength of powder coatings to various substrates such as metal and plastic, solving the issues of easy detachment and peeling of coatings, and enabling coating adhesion to meet grade 1 or above as specified in GB/T 9286. 2. Excellent compatibility: highly compatible with mainstream powder coating resin systems such as epoxy, polyester, and acrylic, without affecting the coating's original leveling, gloss, and weatherability, and avoiding defects such as coating craters and pinholes. 3. Stable weatherability: it itself has good temperature resistance and damp-heat resistance, and can function stably within the -40℃~150℃ temperature range, helping the coating maintain adhesion over the long term in complex environments such as outdoor and high-temperature conditions. 4. Easy dispersibility: as a light yellow powder, it readily mixes uniformly with other components during powder coating preparation, without the need to add extra dispersing aids, simplifying the production process." (Data source: product handbook / official product data)
Technical specifications (as recorded): Appearance light yellow powder; Melting point (℃) 85~95; Moisture content ≤0.5%; Particle size distribution (D50, μm) 8~12; Thermal decomposition temperature (℃) ≥250; Acid value (mg KOH/g) 15~25. (Data source: product handbook / official product data)
Scope of application (quoted verbatim): "Suitable for metal substrates: such as cold-rolled steel sheet, galvanized steel sheet, aluminum alloy, etc., commonly used in powder coating fields such as home appliance housings, automotive parts, and hardware fittings. Suitable for non-metal substrates: such as ABS, PC/ABS alloy, and other plastic substrates, can be used for adhesion enhancement of powder coatings on products such as electronic and electrical appliance housings and toys." (Data source: product handbook / official product data)
- Adhesion grade sentence (quoted verbatim): enables coating adhesion to meet grade 1 or above as specified in GB/T 9286.
- Compatibility sentence (quoted verbatim): highly compatible with mainstream powder coating resin systems such as epoxy, polyester, and acrylic, without affecting the coating's original leveling, gloss, and weatherability.
- Temperature resistance range (quoted verbatim): can function stably within the -40℃~150℃ temperature range.
- This grade is a historically listed grade (Discontinued); documentation is retained; this page is compiled as-is from historical documentation.
02Formulation system & mechanism of action
Adhesion pathway (as described in the documentation): added to the powder coating system as an adhesion promoter, it improves the bonding strength between the coating and metal/plastic substrates, "solving the issues of easy detachment and peeling of the coating." (Data source: product handbook / official product data)
System compatibility (quoted verbatim): highly compatible with mainstream resin systems such as epoxy, polyester, and acrylic; does not affect the coating's original leveling, gloss, and weatherability, avoiding defects such as coating craters and pinholes. (Data source: product handbook / official product data)
Process pathway (quoted verbatim): in the premixing stage, add together with resin, curing agent, pigments and fillers to a high-speed mixer (800~1200 r/min, 5~8 minutes); operate according to the conventional powder coating application process, and curing conditions follow the coating's own requirements. (Data source: product handbook / official product data)
- Premixing — mixed together with resin/curing agent/pigments and fillersMixing speed 800~1200r/min, mixing time 5~8 minutes, ensuring uniform dispersion of materials.
- Application — electrostatic spraying / fluidized bed dip coatingOperate according to the conventional powder coating application process; there is no need to adjust curing temperature or time due to the addition of this product.
- Film formation — adhesion and weatherabilityThe documentation records that coating adhesion meets grade 1 or above as specified in GB/T 9286; it can function stably within the -40℃~150℃ range.
03Key parameters
The table below summarizes the main constituents and physicochemical properties of R1880 recorded in the documentation (original documentation wording and units are retained).
| Item | Value / description |
|---|---|
| Main component | Polymeric adhesion promoter |
| Appearance | Light yellow powder |
| Melting point | 85-95 °C |
| Moisture content | ≤ 0.5% |
| Particle size distribution (D50) | 8-12 μm |
| Thermal decomposition temperature | ≥ 250 °C |
| Acid value (mg KOH/g) | 15-25 |
| Shelf life | 12 months |
| Service temperature | -40°C ~ 150°C |
This grade entry does not list prohibited items or dedicated tests; items not recorded in the documentation do not appear in this table. See Section 4 for dosage basis. (Data source: product handbook / official product data)
04Recommended dosage window
The documentation provides a range and a starting-test recommendation for the addition ratio:
| Scenario | Dosage | Conditions & notes |
|---|---|---|
| Powder coating formulation | 0.5%~2.0% (based on total coating mass) | Original text from the documentation: "It is recommended to add 0.5%~2.0% to the powder coating formulation (based on total coating mass); the specific amount can be adjusted according to the substrate type, coating system, and adhesion requirements"; the denominator is total coating mass |
| First-use recommendation | Start testing at a 1.0% ratio | Original text from the documentation: "For first use, it is recommended to start testing at a 1.0% ratio" |
The denominator is explicitly stated (total coating mass). The documentation provides one range and one starting-test recommendation (1.0%); both rows are recorded as given, without conversion. The specific amount can be adjusted according to the substrate type, coating system, and adhesion requirements.
The two rows are the range and starting-test recommendation recorded in the documentation, and the denominator is explicitly stated; this page does not devise other bases or convert across grades. (Data source: product handbook)
05Applications
The application areas listed in the documentation are as follows:
- Metal substrates
- Cold-rolled steel sheet, galvanized sheet, aluminum alloy, etc.; commonly used in powder coating applications such as home appliance housings, automotive parts, and hardware fittings.
- Non-metal substrates
- Plastic substrates such as ABS and PC/ABS alloys; can be used for adhesion enhancement of powder coatings on products such as electronic and electrical appliance housings and toys.
- System compatibility
- Highly compatible with mainstream powder coating resin systems such as epoxy, polyester, and acrylic (as stated in the documentation).
06How it differs from related grades
R1880 falls under the powder coating adhesion direction. Models that share the theme of "interface treatment / coating performance" have different targets; select according to scenario. Comparison as follows:
| Model | Documentation positioning (key points) | Primary target / direction | Dosage (as documented) |
|---|---|---|---|
| R1880 | Adhesion promoter for powder coatings (slightly yellow powder) | Enhances bonding between powder coatings and metal/plastic substrates | 0.5%~2.0% (based on total coating mass); initial testing at 1.0% |
| R6100 | Organosilicone alkanolamide (coupling-type dispersant) | Coupling and encapsulation/dispersion treatment of inorganic fillers (plastics / solvent-based coatings) | Divided into seven tiers by powder type (1-3% to 30-50%) |
| R1848 | Special encapsulation-type hyperdispersant (coordination-type rare earth organic polymer) | Encapsulation of metal powders such as aluminum silver powder and powders with high dust generation | Aluminum powder encapsulation 8%-10%; whitening agent encapsulation 5%-8% |
Reading note: This comparison only describes each product's documentation positioning and applicable targets; the denominators and bases of the three grades differ, and values cannot be applied interchangeably. (Data source: product handbook)
Replacement & selection
For selection and replacement evaluation after discontinuation, refer to the following current production information:
Replacement basis: Official documentation does not publish a direct replacement model for this grade; according to the site's existing wording, "For replacement selection, see same-series models in the current catalog", the current production catalog currently has no model for the same use (powder coating adhesion direction); the following provides a selection entry point.
- Product Overview (current production models)Selection entry pointBrowse current production models by coating material / coating system for replacement evaluation.
Note: For replacement evaluation, combine with formulation bench trials; the dosage basis of the comparison models differs from this grade, and values cannot be used interchangeably. (Data source: product handbook / official product data)
07Usage & storage
The following points are drawn item by item from the documentation; items not listed in the documentation are not drafted here.
Usage and storage/transport (as documented · excerpt)
- Addition ratio: 0.5%~2.0% (based on total coating mass), adjustable according to substrate type, coating system, and adhesion requirements; for first use, it is recommended to start testing from 1.0%.
- Mixing method: In the pre-mixing stage, add together with resins, curing agents, pigments and fillers, and other raw materials into mixing equipment (e.g., high-speed mixer); mixing speed 800~1200r/min, mixing time 5~8 minutes.
- Application process: Operate according to the conventional powder coating application process (electrostatic spraying, fluidized bed dip coating, etc.); curing conditions follow the coating's own requirements; no need to adjust curing temperature and time due to the addition of this product.
- Packaging and storage (verbatim): Net content 25kg per bag (drum); store in a cool, dry, ventilated place, avoid direct sunlight and rain, keep away from high temperatures, fire sources, and strong oxidants; unopened shelf life 12 months; after opening, keep sealed and it is recommended to use up within 1 month.
- Precautions (verbatim · excerpt): Before use, a small-batch test must be conducted; if slight caking occurs during storage, it may be lightly crushed before use; if caking is severe, do not use; when compounding with other additives, compatibility must be tested in advance.
Not documented (not drafted on this page)
- This grade's entry does not list prohibited items or safety handling data (full MSDS-level version)—safety and protection only include handling protection recommendations (per documentation); other items are not recorded in the documentation.
08FAQ
What is R1880?
Adhesion promoter for powder coatings (slightly yellow powder): documentation records that it can significantly improve the bonding strength between powder coatings and various substrates such as metal and plastic, enabling coating adhesion to reach Grade 1 or above as specified in GB/T 9286; highly compatible with mainstream resin systems such as epoxy, polyester, and acrylic. (Data source: product handbook)
What is the dosage? What is the denominator?
Documentation original text: "It is recommended to add 0.5%~2.0% to the powder coating formulation (based on total coating mass)"; for first use, it is recommended to start testing from 1.0%. The denominator is total coating mass; specifics can be adjusted according to substrate type, coating system, and adhesion requirements. (Data source: product handbook)
How is it used?
In the pre-mixing stage, add together with resins, curing agents, pigments and fillers, etc. into a high-speed mixer (800~1200r/min, 5~8 minutes); operate according to the conventional powder coating application process; no need to adjust curing temperature and time due to the addition of this product. (Data source: product handbook)
What is the current status of R1880?
R1880 is listed as a Discontinued model (documentation retained). The content on this page is compiled as-is from historical documentation and is not a recommendation as a currently marketed product; for selection, refer to current production models and the latest documentation. (Data source: official product data)
What is the replacement model for R1880?
Official documentation does not publish a direct replacement model; the current production catalog currently has no model for the same use—you can use the Product Overview to filter current production models by processing scenario for replacement evaluation (see the entry link in Section 6 "Replacement & selection").
Can R1880 still be purchased? Is there inventory?
This grade is listed as a Discontinued model (documentation retained); this page does not publish it as current sales information; for supply and selection, refer to current production models and official information.
Why was R1880 discontinued?
Reason for discontinuation: not recorded in existing documentation (not drafted on this page).
AppendixData sources
The data on this page comes from product documentation and is traceable item by item:
- Product handbook: R1880 entry (product characteristics / technical indicators / scope of application / usage / packaging and storage / safety and protection / precautions); same-series comparison section (R6100, R1848 entries).
- Cross-verification of documentation: excerpts of the same grade entry are consistent across three documents—the handbook, the comprehensive series fascicle, and the content-edited version (single source family, cross-verified across three volumes).
Not covered by the source material (not written on this page — to be added later)
- Layout elements such as page numbers and footnotes are not included in the page; standard and method names such as "GB/T 9286" and "D50" are recorded verbatim.
- Prohibited items and full MSDS-level data: not recorded in existing documentation (safety and protection recommendations are recorded verbatim).
R1880 is listed as a discontinued grade; the documentation is retained. This page is compiled from historical source material and is not a recommendation of a currently supplied product; please base your selection on current production grades and the latest documentation.