Découvrez comment les composés de moulage à l'urée offrent une isolation électrique supérieure, un rapport coût-performance optimal sur le marché français, et des capacités de personnalisation chromatique pour les applications de fabrication de précision.
Les composés de moulage à l'urée (CMU), également connus sous le nom de plastiques thermodurcissables urée-formaldéhyde, représentent l'un des matériaux les plus polyvalents sur le plan technique dans la fabrication industrielle moderne. Leur structure moléculaire unique offre un équilibre exceptionnel entre résistance électrique, stabilité dimensionnelle, résistance mécanique et flexibilité esthétique. Cette analyse technique examine trois domaines d'application critiques où les CMU offrent des avantages mesurables pour les fabricants opérant sur les marchés français et européen.
It provides excellent electrical properties and resistance against surfactants & weak bases. It is suitable for processing by compression molding.
Urea Molding Compound is recommended for
electrical accessories,
sanitary products,
caps
and closures.
The molded products can be recycled and exhibit good UV stability with good moisture resistance. Its shelf life is 12 months below 20°C
4. Factory
5. Specification
TECHNICAL DATA SHEET
|
No |
Item |
Test Method |
Unit |
Specification |
Result |
|
A |
Basic |
||||
|
A.1 |
Color |
Visual Inspection |
- |
White |
White |
|
A.2 |
Appearance |
Visual Inspection |
- |
Granular |
Granular |
|
A.3 |
Flow property |
LASSIG |
mm |
190-210 |
205 |
|
A.4 |
Density at 23 ℃ |
ISO 1183-1987 |
g/cm3 |
- |
1.53 |
|
A.5 |
Apparent Density |
ISO 60-1977 |
g/cm3 |
- |
0.75 |
|
A.6 |
Bulk Factor |
ISO 171-1980 |
- |
- |
2.4 |
|
A.7 |
Volatile Content |
ISO 3671-1976 |
% |
- |
1.4 |
|
B |
Molding Physical |
||||
|
B.1 |
Molding Shrinkage |
|
|
|
|
|
B.1.1 |
- Cold Powder |
ISO 2577-1973 |
% |
1.0 Max. |
0.76 |
|
B.1.2 |
- Preheated Powder |
ISO 2577-1973 |
% |
1.0 Max. |
0.73 |
|
B.2 |
Post Shrinkage |
|
|
|
|
|
B.2.1 |
- Cold Powder |
ISO 2577-1973 |
% |
- |
0.45 |
|
B.2.2 |
- Preheated Powder |
ISO 2577-1973 |
% |
- |
0.42 |
|
B.3 |
Water Absorption |
|
|
|
|
|
B.3.1 |
- Hot 30 min at 100 ℃ |
ISO 62-1980 (4) |
mg |
- |
280 |
|
B.3.2 |
- Cold 24 hour at 23 ℃ |
ISO 62-1980 (1) |
mg |
150 |
54 |
|
B.3.3 |
- Cold 96 hour at 23 ℃ |
DIN 53472 |
mg |
- |
170 |
|
B.4 |
Temperature of Delfection under Load |
ISO 75-1:1993 |
℃ |
110 Min. |
133 |
|
B.5 |
Martens Temperature |
DIN 43458 |
℃ |
- |
120 |
|
B.6 |
Flammability Classification |
UL94 |
Grade |
- |
V0 (3 mm) |
|
B.7 |
Oxygen Index |
ISO 4589-1984 |
% |
- |
33 |
|
B.8 |
Incandescence Resistance |
DIN 53459 |
Grade |
- |
2a |
|
B.9 |
Buring Time |
ISO 181-1981 |
s |
- |
<1 |
|
B.10 |
Distance Burned |
ISO 181-1981 |
mm |
- |
4.6 |
|
C |
Mechanical Properities |
||||
|
C.1 |
Flexural Stress at Rupure |
ISO 179-1993 |
MPa |
80 Min. |
98 |
|
C.2 |
Impact Strength-notched |
ISO 179-1982 |
KJ/m2 |
1.5 Min. |
2.1 |
|
C.3 |
Un-notched |
ISO 179-1982 |
KJ/m2 |
6.5 Min. |
8.5 |
|
D |
Electrical Properities |
||||
|
D.1 |
Electrical Strength |
|
|
|
|
|
D.1.1 |
- Cold Powder |
IEC 243 |
MV/m |
5.0 Min. |
7.8 |
|
D.1.2 |
- Preheated Powder |
IEC 243 |
MV/m |
5.0 Min. |
9.0 |
|
D.2 |
Insulation Resistance -24h in water |
IEC 167 |
Ω |
1010 |
1011 |
|
D.3 |
Tracking Resistance at 1000 V |
IEC 167 |
V |
500 Min. |
> 600 |
|
D.4 |
Surface Resistance at 1000 V |
DIN 53482 |
Ω |
|
1011 |
|
D.5 |
Volume Resistance at 1000 V |
DIN 53482 |
Ω・cm |
|
1012 |
|
D.6 |
Dielectric Dissipation Factor |
DIN 53482 |
- |
- |
0.025 |
Note: Flow and shrinkage need to be discussed by both sides
[Moulding condition] (Reference only)
|
Type |
Mould Temperature ℃ |
Pressure MPa |
Time min |
|
DGHM-A-1116C |
150 - 180 |
25 - 40 |
0.5 - 1.0 |
[Supply Ability]
[Lead Time]
[MOQ]
