UF ADH-E1
Grade
ASTM D705
ADH-E1 = liquid UF adhesive resin
Use the liquid adhesive resin at roughly 55–65% solids for particleboard and plywood bonding where GB/T 39600 E1 formaldehyde emission limits are sufficient.
Values for the ADH-E1 condition
Other UF grades and fills
UF is listed in 7 conditions; see the grade overview at UF.
Compare all 7 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
UF foam | Choose the in-situ foamed ultra-low-density product (0.012 g/cm³, 0.035 W/m·K) for filling wall cavities; strength, moisture resistance and shrinkage behaviour are all poor. | — | 0.02 | 1.5 | — |
ADH-E1This page Liquid UF adhesive resin | Use the liquid adhesive resin at roughly 55–65% solids for particleboard and plywood bonding where GB/T 39600 E1 formaldehyde emission limits are sufficient. | — | 40 | 0.5 | 100 HRM |
Mineral-filled | Use the mineral-filled grade for electrical parts needing higher heat resistance to 90 °C, lower water absorption and steadier dielectric behaviour; machinability drops to a score of 30. | — | 48 | — | 118 HRM |
Wood-flour / cellulose-pulp filled | Choose the wood-flour or paper-pulp filled grade to cut cost on dark, non-cosmetic parts such as junction boxes and bases, accepting 52 MPa strength and 70 °C service. | — | 52 | — | 110 HRM |
Impact-modified / cellulose-fabric reinforced | Pick the long cellulose-fibre or rag-fabric reinforced impact grade for electrical parts exposed to mechanical shock; toughness rises markedly while service stays at 75 °C. | — | 60 | 1 | 105 HRM |
CELLDefault Cellulose-filled | Pick the α-cellulose filled molding powder (ASTM D705 Type I) for bright-coloured, glossy switch plates, lampholders and bottle caps; service temperature is limited to 75 °C. | — | 65 | 0.8 | 115 HRM |
Melamine-modified UF | Choose the melamine-modified formulation for boiling-water resistance, 95 °C service and higher surface hardness in tableware and water-resistant adhesives, at intermediate cost. | — | 70 | — | 120 HRM |
What is UF ADH-E1?
UF ADH-E1 is UF in the ADH-E1 grade — use the liquid adhesive resin at roughly 55–65% solids for particleboard and plywood bonding where GB/T 39600 E1 formaldehyde emission limits are sufficient. UF ADH-E1 has a tensile strength of 40 MPa (5.8 ksi), weaker than 56% of polymer grades. Elongation at break is 0.5% and the elastic modulus is 7 GPa (1.02 Msi). UF ADH-E1 has a density of 1.28 g/cm³ (0.0462 lb/in³), heavier than 67% of polymer grades. Its glass-transition temperature is 130°C (266 °F). CELL is the default condition FabDigit quotes; ADH-E1 is available on request or by drawing note.
Advantages
- Stiff — 7 GPa (1.02 Msi), better than 90% of polymer grades
- Conducts heat well — 0.3 W/m·K (0.173 BTU/hr·ft·°F), better than 83% of polymer grades
- Low embodied carbon — 3.2 kg CO₂/kg, better than 81% of polymer grades
- Polishes to a fine finish — 70/100, better than 77% of polymer grades
Limitations
- Limited ductility — 0.5%, worse than 100% of polymer grades
- Low fracture toughness — 0.5 MPa·√m (0.455 ksi·√in), worse than 99% of polymer grades
- Limited formability — 3/100, worse than 99% of polymer grades
- Needs corrosion protection — 45/100, worse than 98% of polymer grades
- Difficult to weld — 0/100, worse than 98% of polymer grades
UF ADH-E1 properties
Typical room-temperature values for UF ADH-E1; 20 are specific to this condition. Other listed values are UF reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
UF ADH-E1 has a density of 1.28 g/cm³ (0.0462 lb/in³), heavier than 67% of polymer grades. Its glass-transition temperature is 130°C (266 °F).
Mechanical12
UF ADH-E1 has a tensile strength of 40 MPa (5.8 ksi), weaker than 56% of polymer grades. Elongation at break is 0.5% and the elastic modulus is 7 GPa (1.02 Msi).
Thermal10
UF ADH-E1 is rated for continuous service to 60°C (140 °F). It conducts heat at 0.3 W/m·K (0.173 BTU/hr·ft·°F), better than 83% of polymer grades. Thermal expansion is 30 µm/m·K (16.7 µin/in·°F).
Electrical7
UF ADH-E1 is an electrical insulator with a dielectric strength of 14 kV/mm (355.6 V/mil) and a resistivity of 1×10¹⁰ Ω·m.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 98% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of UF ADH-E1 takes about 80 MJ of energy and emits 3.2 kg of CO₂ — less than 85% of polymer grades. Typical recycled content is 0%.
Manufacturability6
UF ADH-E1's machinability is fair (35/100, worse than 84% of polymer grades); weldability not recommended (0/100); formability not recommended (3/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with UF ADH-E1
Is UF easy to machine?
Drills, turns and taps, but the material is brittle and the fillers abrade tooling — use carbide with sharp positive-rake edges, high speed and light feed, and back up the part to avoid edge chipping. Run dust extraction; no coolant is needed.
Can UF be welded?
Not weldable; the network is cross-linked. Join with epoxy or cyanoacrylate adhesive, molded-in inserts or self-tapping screws.
Can UF be formed, bent or molded?
Compression and transfer molding are the standard routes: mold 140–170 °C, 15–35 MPa, cure 20–60 s/mm. Preheat the charge and vent the tool to release the condensation water from the polycondensation reaction; store molding powder cool and sealed, since overage powder pre-cures and loses flow.
What surface finishes work on UF?
Parts release with a high-gloss molded skin, so finishing is normally limited to deflashing and polishing. The surface cannot be plated or anodized; screen and pad printing adhere well, and long outdoor exposure causes yellowing.
UF chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| ureacondenses with formaldehyde to form urea-formaldehyde matrix | 25 – 40 | 32 |
| formaldehydeF/U molar ratio 1.0-1.6; lower ratio lowers formaldehyde emission | 20 – 32 | 26 |
| alpha-cellulose filler (α )main filler in general-purpose molding powder | 25 – 40 | 33 |
| latent acid catalyst ( / ) | 0.3 – 1.5 | 0.8 |
| lubricant ( / ) | 0.3 – 1.5 | 0.8 |
| pigments / opacifier | 0.5 – 5 | 2 |
| moisture & volatiles | 1 – 4 | 2.5 |
UF ADH-E1 — frequently asked
What is UF ADH-E1 used for?
UF ADH-E1 is typically used for electrical switches and sockets, wood adhesives and small appliance housings. In short: lowest-cost amino thermoset; hard glossy molded finish; 75 °C service ceiling.
What is the tensile strength of UF ADH-E1?
UF ADH-E1 has a typical tensile strength of 40 MPa (5.8 ksi) — weaker than 56% of polymer grades. Strength varies by condition: see the 7 listed tempers.
Is UF ADH-E1 easy to machine?
Not especially — machinability is rated fair (35/100, worse than 84% of polymer grades). Drills, turns and taps, but the material is brittle and the fillers abrade tooling — use carbide with sharp positive-rake edges, high speed and light feed, and back up the part to avoid edge chipping. Run dust extraction; no coolant is needed.
Can UF ADH-E1 be welded?
Not readily — weldability is rated not recommended (0/100). Not weldable; the network is cross-linked. Join with epoxy or cyanoacrylate adhesive, molded-in inserts or self-tapping screws.
What surface finishes work on UF ADH-E1?
Parts release with a high-gloss molded skin, so finishing is normally limited to deflashing and polishing. The surface cannot be plated or anodized; screen and pad printing adhere well, and long outdoor exposure causes yellowing.
Can UF ADH-E1 be formed, bent or molded?
Compression and transfer molding are the standard routes: mold 140–170 °C, 15–35 MPa, cure 20–60 s/mm. Preheat the charge and vent the tool to release the condensation water from the polycondensation reaction; store molding powder cool and sealed, since overage powder pre-cures and loses flow.
What is the maximum service temperature of UF ADH-E1?
UF ADH-E1 is rated for continuous use to about 60°C (140 °F), and briefly to 100°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ASTM D705 — Standard Specification for Urea Formaldehyde Molding Compounds — ASTM International (2018)
- Engineered Materials Handbook, Vol. 2: Engineering Plastics (Amino Resins) — ASM International (1988)
- Modern Plastics Handbook — Thermosets — McGraw-Hill (2000)
- Amino (UF/MF) molding compound technical data — Hexion / Dynea / (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.