Description
Difference Between A1 And A5
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Differences
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Melamine Moulding Compound A5
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Urea Moulding Compound A1
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|
Composition
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Melamine formaldehyde resin about 75%, pulp (Additlves) about 20% and additives (ɑ-cellulose) about5%; cyclic polymer structure.
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Urea formaldehyde resin about 75%, pulp (Additlves) about 20% and additive (ɑ-cellulos) about 5%.
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|
Heat Resistance
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120 ℃
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80 ℃
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Hygienic Performance
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A5 can pass the national hygienic quality inspection standard.
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A1 generally cannot pass the hygienic performance inspection, and can only produce products that do not directly contact with food.
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Certificate Of Anaylsis
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Product Name
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Urea Moulding Compounds A1
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|
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Index
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Unit
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Type
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Appearance
|
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After molding, the surface should be flat, shinny and smooth, no bubbles or crack, color and foreign material achieves standard.
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Resistance to Boiling Water
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No mushy, permit little color fade and purse
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Water Absorb
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%,≤
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|
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Water Absorb(cold)
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mg, ≤
|
100
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Shrinkage
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%
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0.60-1.00
|
|
Distortion Temperature
|
℃≥
|
115
|
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Fluidity
|
mm
|
140-200
|
|
Impact Strength(notch)
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KJ/m2, ≥
|
1.8
|
|
Bending Strength
|
Mpa, ≥
|
80
|
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Insulation Resistance after 24h In Water
|
MΩ≥
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10 4
|
|
Dielectric Strength
|
MV/m,≥
|
9
|
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Baking Resistance
|
Grade
|
I
|
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Product Name
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Melamine Moulding Compound (MMC)A5
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|
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Item
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Index
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Result
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Appearance
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White Powder
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Qualified
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Mesh
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70-90
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Qualified
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Moisture
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＜3%
|
Qualified
|
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Volatile Matter %
|
4
|
2.0-3.0
|
|
Water Absorption (cold water),
(hot water) Mg，≤
|
50
|
41
|
|
65
|
42
|
|
|
Mold Shrinkage %
|
0.5-1.00
|
0.61
|
|
Heat Distortion Temperature ℃
|
155
|
164
|
|
Mobility (Lasigo) mm
|
140-200
|
196
|
|
Charpy Impact Strength KJ/m2.≥
|
1.9
|
Qualified
|
|
Bending Strength Mpa,≥
|
80
|
Qualified
|
|
Extractable Formaldehyde Mg/Kg
|
15
|
1.2
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Applications
A5 is widely used in melamine tableware, melamine tableware, medium and low voltage electrical appliances, and other flame-retardant products.
A1 is mainly used to produce toilet seats.
