China OEM Factory for Epoxy Glass Cloth Laminated Sheets - DF205 Modified Melamine Glass Cloth Rigid Laminated Sheet – D&F manufacturers and Exporter

OEM Factory for Epoxy Glass Cloth Laminated Sheets - DF205 Modified Melamine Glass Cloth Rigid Laminated Sheet – D&F

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OEM Factory for Epoxy Glass Cloth Laminated Sheets - DF205 Modified Melamine Glass Cloth Rigid Laminated Sheet – D&F Detail:

DF205 Modified Melamine Glass Cloth Rigid Laminated Sheet consists of woven glass cloth impregnated and bonded with a melamine thermosetting resin, laminated under high temperature and high pressure. The woven glass cloth shall be alkali-free.

With a high mechanical and dielectric properties and excellent arc resistance, the sheet is intended for electrical equipment as insulation structural parts, where high arc resistance is required. It also passed toxic and hazardous substance detection (RoHS Report). It is equivalent to NEMA G5 sheet, MFGC201, Hgw2272.

Available thickness: 0.5mm~100mm

Available sheet size:

1500mm*3000mm、1220mm*3000mm、1020mm*2040mm,1220mm*2440mm、1000mm*2000mm and other negotiated sizes.

The Nominal Thickness And Allowed Tolerance (mm)

Nominal thickness	Deviation	Nominal thickness	Deviation	Nominal thickness	Deviation
0.5	+/-0.15	3	+/-0.37	16	+/-1.12
0.6	+/-0.15	4	+/-0.45	20	+/-1.30
0.8	+/-0.18	5	+/-0.52	25	+/-1.50
1	+/-0.18	6	+/-0.60	30	+/-1.70
1.2	+/-0.21	8	+/-0.72	35	+/-1.95
1.5	+/-0.25	10	+/-0.94	40	+/-2.10
2	+/-0.30	12	+/-0.94	45	+/-2.45
2.5	+/-0.33	14	+/-1.02	50

Bending Deflection for Sheets (mm)

Thickness	Bending deflection
Thickness	1000（Ruler length）	500（Ruler length）
3.0～6.0	≤10	≤2.5
6.1～8.0	≤8	≤2.0
＞8.0	≤6	≤1.5

Mechanical Processing

The sheets shall be free of cracks and scraps after being machined (punching & shearing).

Physical, Mechanical And Dielectric Properties

No.	Properties			Unit	Standard value	Typical value
1	Density			g/cm3	1.90～2.0	1.95
2	Water absorption（3mm）			mg	See the following table	5.7
3	Flexural strength, perpendicular to laminations (Lengthwise)		At normal condition	MPa	≥270	471
4	Impact strength（Charpy, notch, lengthwise）			kJ/m2	≥37	66
5	Tensile strength			MPa	≥150	325
6	Compressive strength			MPa	≥200	309
7	Adhesive/bond strength			N	≥2000	4608
8	Shear strength, parallel to laminations			MPa	≥30	33.8
9	Dielectric Strength，perpendicular to laminations ( in transformer oil at 90℃+/-2℃)			MV/m	≥14.2	20.4
10	Breakdown voltage，parallel to laminations (in transformer oil at 90℃+/-2℃)			kV	≥30	45
11	Insulation resistance, parallel to laminations		At normal condition	Ω	≥1.0 x 1010	4.7 x 1014
11	Insulation resistance, parallel to laminations		After 24h in water	Ω	≥1.0 x 106	2.9 x 1014
12	Dielectric dissipation factor 1MHz			–	≤0.02	0.015
13	Dielectric constant 1MHz			–	≤5.5	4.64
14	Arc resistance			s	≥180	184
15	Tracking resistance	PTI		V	≥500	PTI500
15	Tracking resistance	CTI		V	≥500	CTI600
16	Flammability			Grade	V-0	V-0

Water Absorption

Average thickness of test samples (mm)	Water absorption (mg)	Average thickness of test samples (mm)	Water absorption (mg)	Average thickness of test samples (mm)	Water absorption (mg)
0.5	≤17	2.5	≤21	12	≤38
0.8	≤18	3.0	≤22	16	≤46
1.0	≤18	5.0	≤25	20	≤52
1.6	≤19	8.0	≤31	25	≤61
2.0	≤20	10	≤34	For sheet thicker than 25mm,it shall be machined to 22.5mm on one side.	≤73
Remarks:1 Remarks: If the caculated average of measured thickness is between two thcikness mentioned in this table, the values will be acuired by interpolation. If the caculated average of measured thickness is less 0.5mm, the vales will not be over 17mg. If the caculated average of measured thickness is over 25mm, the value will not be over 61mg.2 .If nominal thciness is more than 25mm,it shall be machined to 22.5mm on one side only. The machined side should be smooth.

Packing And Storage

The sheets shall be stored in a place where temperature is no higher than 40℃, and be placed horizontally on a bedplate with a height of 50mm or above. Keep away from fire, heat (heating apparatus) and direct sunshine. The storage life of sheets is 18 months from the date of leaving factory. If the storage duration is over 18 months, the product also could be used after being tested to be qualified.

Remarks and Precautions for Application

1 A high speed and small cutting depth shall be applied when machining because of sheets’ weak thermal conductivity.

2 Machining and cutting this product will release much dust and smoke. Suitable measures should be taken to ensure dust levels are within acceptable limits during operations. Local exhaust ventilation and using the suitable dust/particle masks are advised.

3 The sheets are subject to moisture after being machined, a coating of insulating vanish is recommended.

Production Equipment

3240 (7)
3240 (8)
3240 (9)
3240 (10)

The Package For Laminated Sheets

3240 (12)
3240 (11)

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