Urea molding material




- Urea molding resins are used in adhesives, finishes, MDF, and molded objects. These resin's attributes include high tensile strength, flexural modulus and heat distortion temperature, low water absorption mould, high surface hardness, elongation at break and volume resistance.



● Urea Molding Compound


-Urea Molding Compound is one kind of thermosetting materials, Which is made of Urea Formaldehyde Resin and the filling materials of (Alpha) -fiber element and filling the organic or inorganic materials or other additives. This has the characteristics of bright color, good appearance, and no odor with good mechanical property and good insulation resistance, it is widely used in buttons and pins, imitation pearls, various kinds of commercial boxes and covers.



* Physical and Chemical Properties

Test Item

Unit

Properties (conditions)

Remark

Physical
properties

Specific Gravity

g/cm3

1.4~1.5

KSM
standard

Contraction

%

0.6~0.8

Absorption

%

0.05~0.2

Heating transformation
temperature

℃

110℃ min (1hr)

Mechanical
properties

Impact Strength

Kgf.cm/cm2

2.5~3.5

Bending strength

Kgf/mm2

10 min

Tensile Strength

Kgf/mm2

6~8

Electrical
Characteristics

Insulation Resistance

Ω

109 min

Withstanding Voltage

Kv/mm

10 min

Molding
conditions

Mold Temperature

℃

135-160℃

Mold pressure

Kg/cm2

150~250

Curing time

Thickness 1.5mm

30-50sec

Thickness 3.0mm

50-80sec

Thickness 5.0mm

70-100sec




● Urea Injection Molding Compound


- Their high mechanical strength, heat and fire resistance, and good electrical arc and tracking resistance make them an ideal plastic for numerous industrial and household applications. It is commonly used when producing spares of electrical appliance spares: switch, fittings, sockets, cases and Machinery spares: knob, handle, spinning machine components, instrument shell, clock shells.