bakelite powder

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Type Classification Grade Features and Applications
General Type(A) Household (R) PF2A1-131 Suitable for making handles or spare parts of daily household articles.
Electric Appliance (D) PF2A2-131 Enhanced electric leakage resistance, can be used to make insulating structures for low voltage electric appliances.
PF2A2-141 With better electric leakage resistance than D131, can be used to make insulating structures for low voltage electrical appliances.
PF2A2-151 With better electric leakage resistance than D141, can be used to make insulating structures for low voltage electrical appliances.
Hot and Humid (H) PF2A4-JS Similar to PF2A2, but with good water absorbency, suitable for making insulating structure for low voltage electrical appliances and meters in hot and humid area.
PF2A4-161  
Special Type Heat-resisting (C) PF2C3-431 Heat-resisting, suitable to make insulating structure of low voltage, igniter or spark plug of mobiles and motorcycles.
Electrical Type (E) PF2E6-985 Low medium waste, improved absorbency, suitable to make insulating parts for telecommunication and radio, igniter of mobiles and motorcycles.
Wear-resisting (S) PF2S1-5802 High wearable property, used to make spare parts for gas meters.
Injection Type (J)   PF2A2-141J For injection machine use only, technical properties and application is similar to D141.
PF2A2-151J For injection machine use only, technical properties and application is similar to D151
PF2A4-161J For injection machine use only, technical properties and application is similar to D161
PF2C3-431J For injection machine use only, technical properties and application is similar to C3-431
PF2E6-985J For injection machine use only, technical properties and application is similar to E6-985
PF2S1-5802J For injection machine use only, technical properties and application is similar to PF2S1-5802
Colored Series Models Black, Violet, Red, Garnet brown, Green, Padauk imitation and other basic colors. Special requirements for other specifications, models or colors are available against smaples.

Properties
Parameters
General Type (A)
Heat-resisting (C)
Electrical Type (E)
PF2A1
PF2A2
PF2A4
PF2C3
PF2E2
A Testing Results of Moulding Compound Samples
Volumetric Coefficient≤
3.0
3.0
3.0
4.0
3.0
Fluidity
(1)
B Testing Results of Moulding Compound samples
Relatively Density≤
1.45
1.45
1.45
2.0
1.85
Flexural Strength, Mpa ≥
70
70
70
60
45
Impact Strength with gap,KJ/m2 (2 )≥
1.5
1.5
1.5
2.0
1.6
without gap,KJ/m2
6.0
6.0
6.0
3.5
2.0
Hot Distortion Temperature,
140
140
140
155
140
Burning Nature(Blazing Bar Method)
-
-
-
(3)
-
Insulation Resistance, Ω ≥
-
10 8
10 9
10 8
10 12
Dielectric Strength (90), Mv/m ≥
-
3.5
3.5
2.0
5.8
Medium Waster factor (1MHz) ≤
-
0.1
0.1
-
0.020
Electric leakage track resistance, V ≥
-
-
-
175
-
Shrinkage, % ≤
-
-
-
-
-
Water Absorbency, mg ≤
60
50
40
40
15

Notes: 1) The testing method and index for fluidity are determined by supplier and user. If there's no special demand, our factory use rasching method.

2) Impact Strength is tested on the samples with gap.

3) The blazing bar leaves sample after 3 minutes, there should not be any flame on sample within 30 seconds.

4) For technical properties of injection materials, please refer to relative index of different types and models.

Model
Pre-heating
Condition
Moulding Condition
Temperature
Time min
Moulding Temperature
Pressure MPa
Product Thickness (1mm)
Keeping Time (Min.)
H161
E2-985
C3-431
JS
D151
105±3
15

160±3

>30-40
1-1.5
D141
D131
R131
-
-
160±3
>30
0.6-1

Notes: May not be pre-heated before moulding, but should be degased one or twice. For those above grade D151, it is suggested pre-heating is a necessary procedure.

The moulding condition can be adjusted according to actual size, thickness, usage of products and different moulding equipment. In principle, the quality of finished products can not be decreased.

Injection setting

 
Pressure(MPa)
Speed
Time
Teminal Position
Injection Pressure 1
80-120
40-90
-
65-45
Injection Pressure 2
75-115
35-85
-
45-35
Injection Pressure 3
70-110
30-80
-
25-25
Injection Pressure 4
70-105
25-75
20
5-10
Keeping Pressure 1
80-90
30-40
3.5
-
Keeping Pressure 2
70-80
25-35
3.0
-
Keeping Pressure 3
70-75
20-30
2.5
-

Barrel Temperature/ Injection exit/ cooling setting

Cooling setting
Determined according to size and thickness
Pressure(Mpa)
Speed
Terminal Position
Material Storage 1
60
50
Determined by product's size and thickness.

Injection exit place must be bigger than material storage II
Material Storage 2
60
45
Injection Exit
30
20
Material Clearing Auto-count
5
 
Material Clearing Auto-count
3.0
 

Temperature setting

 
Setting Temperature
Actual Temperature
I
60±5
60±5
II
80±5
80±5
III(Stabling Moulding)
135-155
135-155
IV(stiring Moulding)
155-170
155-170

Innitialization of open/close moulding

 
Pressure (MPa)
Speed
Terminal Position
Mould open speed
30
60
100
Mould open low Temperature
10
10
 
Mould open high temperature
110
25
 
Mould open slowly I
60
20
25-45
Mould open quickly
45
50
250
Mould open slowly II
20
10
 

Mould support setting

 
Pressure (MPa)
Speed
Terminal Position
Moulding enter
50
45
According to product's thickness
Moulding exit
50
40
Mould support method According to different requirement of products, usually holding is preferred.
Notes: The above indexes are based on standard environment, can be adjusted according cording to different injection material models or actual condition.

 


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