China Manufacturing Companies for Laminates Definition – DF350A Modified Diphenyl Ether Glass Cloth Rigid Laminated sheet – D&F manufacturers and Exporter

Manufacturing Companies for Laminates Definition – DF350A Modified Diphenyl Ether Glass Cloth Rigid Laminated sheet – D&F

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Manufacturing Companies for Laminates Definition – DF350A Modified Diphenyl Ether Glass Cloth Rigid Laminated sheet – D&F Detail:

DF350A consists of woven glass cloth impregnated with a modified diphenyl ether thermosetting resin, laminated under high temperature and pressure. The woven glass cloth shall be alkali-free and treated by KH560.

DF350A possesses good heat resistance, excellent mechanical and dielectric properties, suitable for applications in H-class electric motors or electrical equipment as insulation structural parts or components. Especially used in these electric motors or electrical equipment which require a higher mechanical performances under thermal state stress.

Available thickness: 0.5mm~200mm

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	+/-2.60

Bending Deflection (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

Physical, Mechanical And Dielectric Properties

No.	Properties			Unit	Standard value	Typical value
1	Density			g/cm3	1.70～1.95	1.9
2	Flexural strength, perpendicular to laminations (Lengthwise)		At normal condition	MPa	≥400	540
2			180℃+/-2℃	MPa	≥200	400
3	Impact strength（Charpy, notch, lengthwise)			kJ/m2	≥37	50
4	Adhesive/bond strength			N	≥5000	6900
5	Water absorption			mg	See next table	11.8
6	Insulation resistance, parallel to laminations	At normal condition		MΩ	≥1.0 x 106	5.3 x 107
6	Insulation resistance, parallel to laminations	After 24h in water		MΩ	≥1.0 x 102	3.8 x 104
7	Dielectric dissipation factor 1MHz			–	≤0.05	1.03 x 10-2
8	Dielectric constant 1MHz			–	≤5.5	4.7
9	Breakdown voltage，parallel to laminations ( in transformer oil at 90℃+/-2℃)			kV	≥30	35
10	Dielectric Strength，perpendicular to laminations ( in transformer oil at 90℃+/-2℃),2mm sheet			MV/m	≥11.8	18

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	See Remarks 2	≤73
Remarks:1) If the calculated average of measured thickness is between two thickness mentioned in this table, the values will be acquired 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 thickkness is more than 25mm,it shall be machined to 22.5mm on one side. 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

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

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.

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

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