GB/T 35847-2018Switchable glazing filmed by polymer dispersed liquid crystal (English PDF)
电致液晶贴膜调光玻璃
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 6, 2018
Implementation date
January 1, 2019
Scope
GB/T 35847-2018 is the English-translated version of 电致液晶贴膜调光玻璃.
GB/T 35847-2018 covers switchable glazing made by bonding a polymer dispersed liquid crystal (PDLC) film to glass, so that an electric field switches the glass between transparent and hazy.
It defines the PDLC light modulation film, the breakdown point, where discharge between the electrodes burns the film locally, and the bright edge, a border that stays see-through when the power is off.
It sets out the requirements, test methods, inspection rules, marking, packaging, transport and storage of the glazing, drawing on national methods for light transmittance and haze, solar and ultraviolet transmittance and the optical and climatic tests of automotive safety glass.
It applies to glass whose main purpose is to control haze with a liquid crystal film adhered to its surface. It was issued on 6 February 2018 and has applied since 1 January 2019.
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Document preview — GB/T 35847-2018
National Standard of the People's Republic of China
- ICS
- 81.040.30
- Classification
- Q 37
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the terms and definitions, requirements, test methods, inspection rules and signs, packaging, and transportation of electroluminescent liquid crystal film dimming glass. And storage.
This standard applies to the dimming glass whose main purpose is to adhere the liquid crystal dimming film to the glass surface to control the haze.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version (including all amendments) applies to this document.
GB/T 191 packaging, storage and transportation logo
Determination of Light Transmittance and Haze of GB/T 2410 Transparent Plastics
GB/T 2680 Visible light transmittance of building glass, Direct solar transmittance, Total solar energy transmittance, Ultraviolet transmittance and Determination of window glass parameters
GB/T 2828.1-2012 Count sampling inspection procedure Part 1. Batch inspection sampling based on AQL plan
GB/T 5137.2-2002 Test methods for automotive safety glass Part 2. Optical property test
GB/T 5137.3-2002 Test methods for automotive safety glass - Part 3. Irradiation resistant to high temperature, humid combustion and simulated climate test
GB/T 8170 Representation and Determination of Numerical Rounding Rules and Limit Values
GB 11614-2009 Plate glass
GB/T 18915.1-2013 Coated glass - Part 1. Solar control coated glass
JC/T 2129-2012 Liquid Crystal Dissipation Glass
3 Terms and Definitions
The definitions of GB 11614-2009 and JC/T 2129-2012 and the following terms and definitions apply to this document.
3.1 Electro liquid crystal light modulation film; polymer dispersed liquid crystal; PDLC
It is composed of two layers of flexible transparent conductive film and one layer of polymer dispersed liquid crystal material. Through the control of the external electric field, it can be transparent and impermeable. A fast-changing film that adheres to the glass surface between the two states.
3.2 Breakdown point
Under the action of an electric field, the phenomenon of localized burning of the dimmer film is caused by the discharge between the electrodes.
3.3 Bright edge
Due to the absence or failure of the dimmer film, the edges of the product that can still see through under power-off conditions.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 191Graphical symbols marking for handling and storage of packages
- GB/T 2410Determination of the Luminous Transmittance and Haze of Transparent Plastics
- GB/T 2680Glass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
- GB/T 2828.1-2012Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
- GB/T 5137.2-2002Test methods of safety glazing materials used on road vehicles - Part 2: Optical properties tests
- GB/T 5137.3-2002Test methods of safety glazing materials used on road vehicles - Part 3: Radiation, high temperature, humidity, fire and simulated weathering resistance tests
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Related Standards
GB/T 18915.1-2013 — Coated glass－Part 1: Solar control coated glass
GB/T 191-2025 — Graphical symbols marking for handling and storage of packages
GB/T 1910-2015 — Newsprint
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