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Established in 1972 and reconstituted in 1988 POLYCHEM INTERNATIONAL is a family managed business unit.
Started with distribution of Bakelite Sheet manufactured by legendary company
M/s: Bakelite Hylam Ltd. and subsequently we were appointed distributor by
various India’s top ranking manufacturers of Electrical Insulating materials.
Due to our customers – centric approach , we felt the need for supply of tailor made components of all electrical insulating material to our customers , We started a well equipped fabrication unit in 1999 under the banner of
M/s : PRISM INDUSTRIES.
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| Products : |
| Bakelite Sheet : |
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BAKELITE sheet is also known as Hylam sheet, Tufnol sheet, Norplex Sheet, Micarta Sheet,Synthetic Resin Bonded Paper Base Sheet (SRBP) Phenolic Sheet, Fabric Sheet, Laminated Sheet, Synthetic Resin Bonded Fabric base Sheet (SRBF).
BAKELITE sheet are hard, dense material made by applying heat and pressure to layers of Cellulose Paper or Fabric cloth impregnated with synthetic resin (Phenolic Resin). When heat and pressure are applied Polymerization transforms the layers into Thermosetting Industrial Laminates.
BAKELITE sheet is produced in different grades with various additives to meet diverse Mechanical,Electrical and Thermal Requirements. Some of the Grades manufactured with comparative are Given below. |
| PAPER BASE |
| IS: 2036-1995 |
BS:2572 |
DIN 7735 |
EN 60893-3-4 |
NEMA |
| P1 |
P1 |
HP 2061 |
PF CP201 |
X |
| P2 |
P2/1 |
HP 2061.5 |
PF CP203 |
XX |
| P3 |
P3/1 |
HP 2061.6 |
PF CP206 |
XXX |
| P4 |
P4 |
HP 2062-8 |
PF CP204 |
XXXP |
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| FABRIC |
| IS: 2036-1995 |
BS:2572 |
DIN 7735 |
EN 60893-3-4 |
NEMA |
| F3 |
F3 |
HGW 2082 |
PF CC201 |
C |
| F2 |
F2 |
HGW 2083 |
PF CC202 |
CE |
| F1 |
F1 |
HGW 2083.5 |
PF CC203 |
- |
| F4 |
F4 |
HGW 2082.5 |
PF CC204 |
- |
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USAGE
Bakelite Sheet are used for various application Electrical as well as mechanical, such as Electric Plug, Switches, Switchgear, Tube Light Holder, Lamp cap, Chokes, Support for Electrical Components, Shrouding , Transformers, Battery Chargers Control Panels, Bobbins, Condensor Mountings, Tap Changer, Grid cover Aramture wedges, Generator Slot wedges, Machineries, Mould.
BAKELITE / HYLAM sheet are fabricated as per design or samples. For Punched Components Die has o be made. We have our own fabrication unit having facility for Cutting, drilling, shaping of material. We have following machine: Lathe, Bandsaw, Milling, drilling, Tool Grinder, Motorized Shearing Machine, Oven, CNC Router, Power press, Circular Saw. |
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| fABRIC RODS : |
FABRIC BASED THERMOSETTING SYNTHETIC RESIN (PHENOLIC) BONDED LAMINATED ROLLED
& MOULDED RODS & TUBES |
| GRADE |
LPF - 2 |
| COLOR |
These Rods are supplied in natural Brown Colour |
| DIAMETER |
Standard Range is 4.0mm to 150.0mm diameter, but on special requirement we can manufacture up to 300mm dia |
| LENGTH |
These Rods are supplied in straight standard length of 305mm (1'), 610 mm (2') or 1000 mm. |
| DESCRIPTION |
These Moulded Rods are composed of laminations of Phenolic Synthetic resins impregnated cotton Fabric into a convolute form, moulded in cylindrical Moulds under heat and pressure and then ground to size, buffed & varnished to semi Glossy finish. These Rods are with clean smooth free from surface defects such as voids, Blisters cracks etc., |
| APPLICATION |
These Fiber Phenolic Rods are intended for Fabrications of Mechanical components such as spacers, washers, etc., it is not recommended for Primary insulation for Electrical application involving commercial power frequencies at voltage about 600 volts Material is resistant to dilute solutions of most acids. It is poor for using alkaline solutions, it remains unaffected by most organic solvents except acetone, which may soften the material. |
| MACHINERY |
These Rods are capable of being turned, drilled, tapped sawed and machined in all directions without showing any sign of cracking, splitting or otherwise impairing the serviceability of material. |
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| Properties of various grades: |
| Sr. No. |
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PROPERTIES |
UNITS |
| 1 |
Flexural Strength |
Mpa |
1 |
| 2 |
Water Absorption |
Mg/cm |
3 |
| 3 |
Insulation resistance after immersion in water for 24 hrs |
Meg Ohms |
1 |
| 4 |
Axial Electrical strength step by step at 90 0C Oil |
KV |
4 |
| 5 |
Density |
Gm/cc |
1 |
| 6 |
Operating Temperature |
°C |
1 |
| * Comply with the requirement of ASTM - D709-92 Grade LE |
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| Glass Epoxy Laminates : |
GRADE : NEMA – FR-4
SHEET SIZE : 2135 mm X 1220 mm / 1220 mm X 1066 mm
THICKNESS RANGE : 0.2 mm – 40 mm
DESCRIPTION : This grade exhibits extremely high mechanical strengths (flexural, impact and bonding) at room temperature. Good Dielectric loss and electric strength properties under both dry and humid conditions. |
| Sr. No |
PROPERTIES |
ASTM TEST METHOD |
UNITS |
CONDITION |
SPECIFICATION |
TEST RESULTS |
| 1 |
Specific Gravity |
---- |
---- |
A |
---- |
1.90 |
| 2 |
Water Absorption (max) |
D229 |
% |
D-24/23 |
0.8 mm – 0.5%
1.2 mm – 0.4%
1.6 mm – 0.25%
2.4 mm – 0.2%
3.0-5.0mm – 0.15% |
0.8 mm – 0.4%
1.2 mm 0.3%
1.6 mm 0.18%
2.4 mm 0.15%
3.0-5.0 mm – 0.12% |
| MECHANICAL PROPERTIES |
| 1 |
Tensile Strength L.W.
(12mm thick) C.W. |
D229 |
PSI |
A |
40,000
35,000 |
42,000
36,000 |
| 2 |
Impact Strength
A. lzod L.W.
()32 – 25mm thick) C.W. |
D229 |
PF CP204 |
A |
7.00
5.50 |
7.8
5.75 |
| 3 |
Flexural Strength L.W.
(0.8 – 2.4mm thick) C.W. |
D229 |
PSI |
A |
55,000
45,000 |
62,000
53,000 |
| 4 |
Bonding Strength (12mm thick) |
D229 |
Lbs |
A
D/48/50 |
2,000
1,600 |
2,200
1,800 |
| ELECTRICAL PROPERTIES |
| 1 |
Minimum Breakdown Voltage
Edge Wise (0.8 – 25mm) |
229 |
KV |
A
D-48/50 |
45
40 |
50
45 |
| 2 |
Electric Strength (perpedicular to lamination)
– (1.5mm thick) |
D229 |
---- |
In oil at
90 C |
15 |
20 |
| 3 |
Maximum Permittivity / 1MHZ (1.5mm thick) |
D229 |
---- |
A
D24/23 |
5.20
5.40 |
5.12
5.25 |
| 4 |
Insulation Resistance after (Immersion in water for 24 hours) |
D229 |
M Ω |
C – 96/35/90 |
200,000 |
300,000 |
| 5 |
Maximum Dissipation |
---- |
---- |
A |
0.025 |
0.02 |
| 6 |
Factor/MHZ (1.5mm thick) |
---- |
---- |
D-24/23 |
0.035 |
0.03 |
| THERMAL PROPERTIES |
| 1 |
Temperature Index |
VDE 0304/2 |
C |
---- |
130 |
130 |
| 2 |
Insulating class |
IEC Publ.85 |
C |
---- |
B |
B |
| 3 |
Flammability |
UL94 |
Class |
A |
V0 |
V0 |
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