Polycarbonate (PC) composite plate with hardened surface
A composite board and PC board technology, applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve problems such as poor wear resistance, poor visual effect, scattering, etc., to broaden the scope of application without loss Light transmittance, effect of suppressing scattering phenomenon
Inactive Publication Date: 2011-08-10
SUZHOU HESHENG NEW MATERIALS
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Problems solved by technology
However, due to the low surface hardness and poor wear resistance of polycarbonate, some polycarbonate devices used for wear-resistant applications require special surface treatment. For example, when PC is used as a screen protector, it often needs to be treated at a high temperature to improve its Surface hardness, but in the process of high temperature treatment, the uneven distribution of molecular structure on the surface of the substrate will cause scattering phenomenon, forming the commonly called "rainbow pattern" phenomenon
The existence of this kind of rainbow pattern will affect the light transmittance and visual effect of the product. The higher the strength of the surface hardening treatment, the more difficult it is to control the rainbow pattern and the worse the visual effect
Method used
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[0013] Such as figure 1 As shown, the surface-hardened PC composite board is made of polycarbonate PC board 1 as the base material. PC board 1 is an optical-grade PC material with a light transmittance of more than 90%, and is produced by extrusion molding and injection molding processes; the front side of PC board 1 It is coated with a hard coating 2, and the hard coating 2 is covered with a PE protective film 3; the back of the PC board 1 is coated with a hard coating 4, and the hard coating 4 is covered with a PE protective film 5. The surface hardness of the hardened coating 2 and the hardened coating 4 reaches above 3H / 750g, the hardening process does not require high temperature, and the light transmittance is greater than 90%.
[0014] The optical-grade PC board 1 with high light transmittance is used as the substrate, and the thinnest product thickness can be controlled below 1mm. The surface of the PC board is hardened by applying a hard coating on the surface, which ...
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Abstract
The invention provides a PC composite plate with a hardened surface. A hardened coating is coated on the front of a PC plate; a poly ethylene (PE) protective film is coated on the hardened coating; and the hardened coating is coated on the back of the PC plate, and the PE protective film is coated on the hardened coating. An optical PC plate is used as a substrate, and the surface of the PC plate is hardened by coating the hardened coating on the surface to improve the surface hardness of the PC plate; as the coating is not needed to be subjected to high-temperature treatment during hardening, the surface structure of the PC cannot be influenced and the scattering phenomenon generated due to a nonuniform surface structure is inhibited; and the light transmittance of the adopted PC and the adopted hardened coating reach over 90 percent, so that a product has high surface hardness and the light transmittance is not lost, the application range of the PC is widened, and the PC composite plate is suitable for a touch panel, an illumination panel or a screen protective film and the like.
Description
technical field [0001] The invention relates to a surface decoration plate, in particular to a surface-hardened PC composite plate. Background technique [0002] Polycarbonate (PC) is a common material in daily life. Due to its colorless transparency and excellent impact resistance, it is widely used in optical discs, spectacle lenses, goggles and headlights. However, due to the low surface hardness and poor wear resistance of polycarbonate, some polycarbonate devices used for wear-resistant applications require special surface treatment. For example, when PC is used as a screen protector, it often needs to be treated at a high temperature to improve its Surface hardness, but in the process of high temperature treatment, the uneven distribution of molecular structure on the surface of the substrate will cause scattering phenomenon, forming the so-called "rainbow pattern" phenomenon. The existence of this rainbow pattern will affect the light transmittance and visual effect ...
Claims
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IPC IPC(8): B32B27/30B32B27/06B32B33/00B32B27/36
Inventor 汪倩文武俊
Owner SUZHOU HESHENG NEW MATERIALS