DIAMOND PATTERN RESIN COATED PAPER

MOQ	800 1 PALLET
Port	QINGDAO,CHINA
Packaging	KRAFT PAPER PACKAGE,MULTILAYER BOARD PALLET
Lead Time	30 DAYS

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Product Details

DIAMOND PATTERN RESIN COATED PAPER

Diamond pattern resin coated paper (DPRCP) is new insulating materials for transformers．Diamond pattern epoxy resin coated electrical consists of high strength insulating paper．

The diamond pattern-resin coating melts at baking temperatures and fuses together the layers of paper and conductors, forming a rigid bond．Prolonged heating of the coil during the normal baking cycle cures (or cross-links) the resin thus in suring permanent resistance to internal heat and forces for the lifetime of transformer．Coils made with DPRCP are able to withstand axial short circuit forces far better than coils made with uncoated papers．

Because the shape of resin coat assumes point not covering all surface the passages without coat are best useful to degas insulating materials and intrude liquid or gas insulating materials．

Moreover , the DPRCP help minimize corona failure is caused by a spark discharge through air in trapped between layers of insulating or within the insulating itself．The diamond pattern coating (as opposed to solid coating ) combines strong bonds with channels through which air is evacuated prior to oil filling This reduces gas pockets in the coil，and practically eliminates corona failure in service．

DPRCP has already been widely used in electrical equipments such as mutual inductance machine，transformer and etc，as layers insulating materials．

Classification

Specification

Thickness:

08、0.10、0.13、0.15、0.18、0.20、0.25、0.40、0.50mm

Width:

620mm, 810mm, 1000mm, 1100mm, 1220mm, 1320mm.

Mark:

Diamond pattern resin coated paper – DPRCP

2 Technical requirements

2.1 Exterior quality

No defects such as wrinkle，pinhole，grains of charcoal and etc．Resin must be clear．

2.2 Insulation class A(105℃)

2.2.1 Functions standards form

Caliper：（inch） (millimeter)	0.003 0.08	0.005 0.13	0.007 0.18	0.010 0.25	0.015 0.38	0.020 0.50
Thickness tolerance:（base paper）		±10%
Width tolerance:		±5mm
Apparent density:		0.9 to 1.1, all thicknesses
Moisture content ,﹪		4.0 to 8.0﹪, all thicknesses
PH water extract:		6.0 to 8.0, all thicknesses
Ash content,﹪		1﹪ maximum
Elongation MD ﹪ ≥ CMD		2 4
No-pollution oil of transformer		Non-pollution
Tensile strength, N/mm2 ≥ Machine direction: Cross machine direction:	70 35	70 35	80 35	80 35	80 35	80 35
Dielectric breakdown: ≥ （volts ,dry test）	750	1100	1400	2100	2900	3100
Coating thickness per side mm	0.006 to 0.012
Nitrogen content,	≥1%
Work environment temperature	120℃
Bond strength: Kpa	≥450kpa

2.3 Complete solidification condition ( DPRCP-A)：105±5℃3h　＋ 120±5℃6h

Resin coat doesn’t turn off, move and out of shape after solidification．

Test method

Take sample According to standards of web in GB450-79“Method of take paper and board’s sverage sample and deal with sample before check”．

Exterior

Range estimation

Base materials’thickness

Clean the sample with spotless acetone 1000ml about two or three times dissolve the resin coat in acetone, stoving．Then check its total thickness and tolerance according to GB451-79 “Test method of paper and boaed’s thickness”．

Tensile strength and elongation

Check it according to GB453-79 “Test method of paper and boaed’s tensile strength and elongating rate”．

3.5 Tearing strength

Check it according to GB455-79 “Test method of paper and boaed’s tearing strength ”

Breakdown voltage

Check it according to GB408-78 “Test method of solid insulating materials breakdown voltage”．

Adhesion strength

Take sample Prepared fourteen pieces of clean and smooth aluminum or copper plates, 0.5-1.0mm thickness,51mm width, 152mm length．Clean each plate with caetone, then stoving．

Put four layers 51mm×51mmof paper in between every tow piates , show as Fig．2

Press 35N/mm2 upon the contact surface then heat solidification according to 2.3.

Test method

Pull at rate of per minute, measure out connection shear strength of the above 7 paper samples, remove the maximum value and minimum value, and then calculate the average value, 100±2℃，tensile shear strength should not be less than 275 kpa (0.275N/mm2 , 0.028023kgf/ mm2) when the temperature is at 100±2℃, tensile shear strength should not be less than 450kpa(0.450N/mm2 ,0.0458874kgf/ mm2) when the temperature is at 25±2℃.

Test standards

4.1 DPRCP is agreed to ex-factory only after up to standard and it must out with qualification．

4.2 Test classification

Ex-factory test and type test．

4.3 Items of ex-factory test：

According to 2.1 and1,2,4,6,7,of 2.2

4.4 Do type test：

Before new product put into production；

When new material or technology has great change；

Every produce 10T；

When there is quality question in ex-factory test；

When re-produce after stop production over one year；

When there is a considerable difference between result of ex-factory test and last type test．

4.5 It there is a item does not pass in type test , the re-test mast be done in double quantities of the no pass item．If it does not pass again , the test does not pass．

Packing , make , store and transit

5.1 Packing

5.1.1 Reel’s diameter：280mm-550mm．

5.1.2 The inside diameter of Reel’s core：76±2mm．

5.1.3 The ends of reel must neat without gap．

5.1.4 There are no more there broken ends in one reel．Every joint must longer 20m , and there is a clear make in broken end made of color paper．

5.1.5 Reel must be packaged with plastic film cloth and Kraft , and load in wooden pallet．

5.2 Make

Must make factory name , specification , type , date , gross weight and net weight on packing box．Must with qualification in packing box．Meanwhile mark symbols of damp proof , fireproof and shockproof on packing box．

5.3 Store and transit

5.3.1 DPRCP must be stored in where is dry , clean , ventilate and temperature is not higher than 35℃．It must be stored far away from fire and warm air , and cannot be directly shined by sun．the store period is one year from the date of ex-factory．

Do test in its adhesion when it is stored over store period and it can be used yet if it passed the test．

5.3.2 Proof damp , heat and shock during the transit．