Bakelite Sheet

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Bakelite sheet is the combination of hard and high density material and impregnated paper using phenolic resin or fiber glass cloth and pressed under heat and pressure. This industrial laminate normally consists of fiber paper, cotton fabric, chemical fiber yarn and fiber glass, etc. When specific heat and pressure are applied to these layers, a chemical reaction combines the layers into a high-pressure thermosetting plastic.

Strength
1. Outstanding mechanical properties and resistance to oil
2. Great dielectric properties
3. Prominent electrical properties
4. Warping degree ≤ 3‰

Application
1. Parts for chemical equipment and general machinery
2. Base plate, support and guard panel for electric generator
3. Insulating parts for transformer, inverter, electric motor, distribution box, fixture board material, clamp plate for molds, high and low voltage wiring closet, as well as packaging machine
4. Mechanical mold, fixture material for PCB (printed circuit board) and ICT (in-circuit test), as well as forming machine, drilling machine and base plate for grinding, etc.

Color
Our bakelite sheet is offered in orange and black colors.

Dimension

Bakelite sheet
Thickness (mm)	Width × length (mm)
0.5 to 50	1030 × 2030

Note
Length, width, thickness and diameter tolerance are slightly different due to inevitable error occurred in production process.

Technical data sheet

No.	Item	Unit	Value
1	Color		Orange, black
2	Concentration	g/cm2	1.45
3	Thermal resistance (continuously)	°C	140
4	Thermal resistance (short time)	°C	300
5	Coefficient of linear thermal expansion	kx	10
6	Impact resistance	kj/m2	≥15
7	Flammability (UL94)	HB	94
8	Vertical bending strength	MPa	≥120
9	Vertical compression strength	MPa	≥250
10	Tensile strength	MPa	≥100
11	Impact strength	KJ/m2	67
12	Bonding strength	N	3600
13	Insulation resistance after immersion in water	Ω	1.0 × 10
14	Vertical electrical strength	KV/m	12.1
15	Parallel breakdown voltage	KV	10
16	Relative dielectric constant (1MHz / 50Hz)		5.5/-
17	Volume resistivity	Ω× cm	10-7 to 10-8
18	Surface resistivity	Ω	1023