Hydrolysis Resistant PET Film for Solar Cell Backsheet -Yuxing Film

UV/Hydrolysis Resistan Film

CY11G48 Hydrolysis resistance PET Film for Solar Cell Back sheet

CY11G48 Hydrolysis Resistant PET Film for Solar Cell Backsheet

White PET film with excellent electrical insulation properties, low water vapor transmission rate, good coating processing performance, excellent anti-aging properties. Mainly used in the field of solar cell back material. Standard thickness: 125,150,250,262,288μm. Thickness can be customized according to customer's specific requirement.

Hydrolysis resistance

Solar backsheet

Low WVTR

Electrical insulation

White PET

Product Model:

CY11G48

Key Highlights

Low water vapor transmission

Exceptionally low WVTR (1.5-2.8 g/m²·24h) ensures a highly impenetrable moisture barrier for advanced solar backsheet structures.

Hydrolysis resistant PET film anti-aging icon

Excellent anti-aging properties

PCT 48-hour testing proves outstanding hydrolysis resistance, guaranteeing long-term durability as a robust weatherable polyester film.

Technology & Advantages

The CY11G48 utilizes proprietary chemical formulations to drastically improve structural stability under extreme damp-heat aging conditions. By aggressively reducing the water vapor transmission rate, it serves as the ultimate hydrolysis resistant PET film for global photovoltaic backsheet manufacturing.

Technology behind hydrolysis resistant PET film for solar applications

Core Values

Long-term Reliability:
Expertly helps composite backsheet structures seamlessly withstand intense damp heat, severe UV exposure, and wild temperature variations in long-term outdoor service conditions.

Processing Compatibility:
Perfectly suitable for high-speed industrial lamination processes and rigorous adhesive systems utilized in the mass production of functional industrial films and backsheets.

Electrical Safety:
Provides profoundly stable electrical insulation support, functioning seamlessly as a weatherable, protective core layer for highly sensitive photovoltaic modules.

Applications

Weatherable polyester film for floating PV systems

Floating PV Modules

High humidity and severe water vapor environments demand the absolute strongest hydrolysis resistance capabilities.

UV heat resistant film base for desert PV installations

Desert PV Arrays

Extreme UV exposure and massive diurnal temperature variations mandate unparalleled thermal and dimensional stability.

PET film for solar cell backsheet on commercial rooftops

Rooftop Solar

Decades of continuous long-term outdoor operation strictly require fail-safe insulation safety and rigid structural reliability.

Utility-Scale PV Plants

Perfectly suitable for massive power module projects requiring absolute batch consistency and long-term material survival.

Technical Specifications

Property	Property	Unit	Index	Index	Index	Index	Index	Test Method
Thickness	Thickness	μm	125	150	250	262	288	GB/T 13542.2-2021
Tensile strength	MD	MPa	158	152	149	160	155	GB/T 13542.2-2021
Tensile strength	TD	MPa	166	162	158	168	170	GB/T 13542.2-2021
Elongation at break	MD	%	118	122	131	120	118	GB/T 13542.2-2021
Elongation at break	TD	%	92	94	103	112	110	GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)	MD	%	1.3	1.2	1.1	1.1	1.1	GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)	TD	%	0.2	0.2	0.1	0.1	0.1	GB/T 13542.2-2021
Light transmittance	Light transmittance	%	12.8	10.4	6.9	16	14	GB/T 2410--2008
Electrical strength≥	Electrical strength≥	V/μm	81	76	61	59	57	GB/T 1408.1-2016
WVTR	WVTR	g/(m2.24h)	2.8	2.5	1.7	1.6	1.5	GB/T 21529-2008
Wetting Tension	Wetting Tension	mN/m	52	52	52	52	52	GB/T 14216-2008
PCT accelerated aging	Retention of Elongation to break	%	35	32	28	60	58	121℃, 100%RH, 2atm, 48h

Remark: The parameter table for this hydrolysis resistant PET film is exactly from the original TDS. MD refers to machine direction and TD refers to transverse direction; inspection type and typical value notes strictly follow the original TDS.

Technical Specifications

Property	Property	Unit	Index	Index	Index	Index	Index	Test Method
Thickness	Thickness	μm	125	150	250	262	288	GB/T 13542.2-2021
Tensile strength	MD	MPa	158	152	149	160	155	GB/T 13542.2-2021
Tensile strength	TD	MPa	166	162	158	168	170	GB/T 13542.2-2021
Elongation at break	MD	%	118	122	131	120	118	GB/T 13542.2-2021
Elongation at break	TD	%	92	94	103	112	110	GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)	MD	%	1.3	1.2	1.1	1.1	1.1	GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)	TD	%	0.2	0.2	0.1	0.1	0.1	GB/T 13542.2-2021
Light transmittance	Light transmittance	%	12.8	10.4	6.9	16	14	GB/T 2410--2008
Electrical strength≥	Electrical strength≥	V/μm	81	76	61	59	57	GB/T 1408.1-2016
WVTR	WVTR	g/(m2.24h)	2.8	2.5	1.7	1.6	1.5	GB/T 21529-2008
Wetting Tension	Wetting Tension	mN/m	52	52	52	52	52	GB/T 14216-2008
PCT accelerated aging Retention of Elongation to break	PCT accelerated aging Retention of Elongation to break	%	35	32	28	60	58	121℃, 100%RH, 2atm, 48h
Note: ① MD = Machine Direction; TD = Transverse Direction. / ② Water vapor transmission rate and PCT are type tests; other items are factory acceptance tests. / ③ Performance values for nominal thicknesses other than the recommended preferred thicknesses are derived via interpolation. / ④ The values above are typical, not guaranteed.

Remark: The parameter table is from the original TDS. MD refers to machine direction and TD refers to transverse direction; inspection type and typical value notes follow the original TDS.

Packaging & Logistics

Storage Conditions

Store the solar backsheet film product in a clean, dry, and thoroughly ventilated place.

Storage Environment

Keep securely away from fire, active heating sources, and continuous direct sunlight prior to lamination.

Pallet

High-strength fumigation-free wooden pallets engineered to be suitable for heavy global export transportation.

Label Information

Each roll label meticulously includes model, batch number, exact thickness, width, net weight, and production date for rigid traceability.

Slitting Range

Different precise slit widths can be supplied optimally according to customer PV laminating equipment and production requirements.

Supply Note

Regular specifications powerfully support mass batch supply. Lead time fundamentally depends on order specifications, total volume, and production schedule.

Bulk packaging of hydrolysis resistant PET film rolls

Frequently Asked Questions

Q: Which layer of the photovoltaic structure is CY11G48 used for?

A: CY11G48 is typically utilized as the vital middle core layer of laminated PV structures. Acting as a premium PET film for solar cell backsheet composites, it provides essential mechanical support, electrical insulation, and critical dimensional stability.

Q: Is this product suitable for high-humidity and high-temperature outdoor environments?

A: Absolutely. CY11G48 is powerfully optimized for extreme hydrolysis resistance under severe damp-heat aging conditions (PCT 48h). It is exceptionally suitable for floating PV, highly humid regions, and demanding long-term outdoor weatherable polyester film architectures.

Q: Can other specialized thicknesses be fully customized?

A: Yes. Other specific structural thicknesses can be precisely customized according to the solar module manufacturer's exact application requirements.

Q: Can sample rolls be provided for PV lamination testing?

A: Yes, protective samples or small evaluation rolls can be rapidly provided according to project requirements for crucial lamination validation, adhesive laminating, and long-term aging performance tests.

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