TPT backsheet

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PART1:Introduction:

We supply the backsheet for solar cell modules that has excellent long-term reliability,stability.

It has been recognized by module manufacturers around the world and boasts more than 13 years of proven results.

Our backsheet has a high adhesiveness to EVA and various sealants.

PART2: Special features:

1.    A great variety of backsheet are available: TPT, PVDF,FFC, TPE,PET patterns etc,

2.    A membrane-adhesive integrated structure with fluorine coating on both sides of the backsheet.

3.    Applying the technology of plasma chemical modification and fluorosilicone surface graftingWhite backshe

4.    White backsheet enjoys high-reflective effect

5.    Made-to-order backsheet with under 1,300mm is available.

6.    A wide range of thickness from 0.26-0.33mm based on customization.

PART 3: Technical Characteristics

Item

Unit

Quoted Standard

Value

Film thickness

Nominal thickness

μm

GB/T 13542.2-2009

300

Nominal tolerance

-

-

±5%

Tensile strengthMD

N/mm2

GB/T 13542.2-2009

151

Tensile strengthTD

N/mm2

GB/T 13542.2-2009

168

Elongation at breakMD

%

GB/T 13542.2-2009

153

Elongation at breakTD

%

GB/T 13542.2-2009

120

Heat shrinkage 150×30minMD

%

GB/T 13542.2-2009

0.38

Heat shrinkage 150×30minTD

%

GB/T 13542.2-2009

0

Coating adhesion

Grade

GB/T 9286-1998

0 Grade

Peeling strength with EVAInitial

N/10mm

GB/T 2790-1995

75

Breakdown voltage strength

KV/mm

GB/T 13542.2-2009

21.8

Partial discharge

VDC

IEC60664-1

1077

Moisture vapor transmission rates

g/m2·d

GB/T 26253-2010

1.42

Damp-heat testing

85×85%RH,2000h

-

IEC 61215-2005

Δb≤2

No delamination ,no bubble

Radiation exposure (QUVB, 4000h)

-

GB/T 16422.3-1997

Grade 4

UV pretreatment15kwh

-

IEC 61215-2005

Δb≤2

No delamination , bubble or fold

Super UV65×65%RH60kwh

GB/T 16422.2-1999

Δb≤2

No delamination ,no bubble

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