A kind of photosensitive film and preparation method thereof

A photosensitive film and photosensitive layer technology, which is applied in the field of engineering plastics, can solve problems such as cracking and film deformation, and achieve the effects of strong adhesion, low cost, and high production efficiency

CN108527991BActive Publication Date: 2020-08-11深圳市天博塑胶科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-08-11

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Abstract

The invention discloses a photosensitive film comprising a polycarbonate PC layer, a polymethyl methacrylate PMMA layer and a photosensitive layer between the polycarbonate PC layer and the polymethylmethacrylate PMMA layer; and raw materials of the photosensitive layer comprise transparent photosensitive color changing powder, a nano-scale conductive antistatic agent, and an organosilicon phasesoluble coupling agent with two reactive functional groups of methyl and phenyl groups. The invention also discloses a preparation method of the photosensitive film. The prepared photosensitive film with a three-layer structure comprising the PC layer, an intermediate functional layer and the PMMA layer solves the problems of deformation of a conventional PC and PMMA composite film due to stress caused by differences in shrinkage thermal expansion coefficients and cracking and layer formation due to severe deformation when in use of the conventional PC and PMMA composite film. The photosensitive film is simple in control process of the preparation method, easy in operation, high in production efficiency, low in cost, free of pollution and environmentally-friendly.
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Description

technical field

[0001] The invention belongs to the technical field of engineering plastics, and in particular relates to a photosensitive film and a preparation method thereof. Background technique

[0002] Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain. Due to the particularity of polycarbonate structure, it has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics. The abbreviated code name of polymethyl methacrylate is PMMA, commonly known as plexiglass, which is by far the most excellent and relatively affordable variety of synthetic transparent materials.

[0003] The composite film of PC and PMMA is widely used in mobile phones, automobiles, electronics, optics and medical fields because of its unique mechanical properties, weather resistance and optical properties. This material is produced by co-extrusion. Since PC and PMMA are two different engineer...

Examples

Embodiment 1

[0029] Such as figure 1 Shown, a kind of photosensitive film comprises polycarbonate PC layer 63, polymethyl methacrylate PMMA layer 61 and the photosensitive layer 62 between polycarbonate PC layer 63 and polymethyl methacrylate PMMA layer 61 The raw materials of the photosensitive layer 62 are transparent photochromic powder, nano-scale conductive antistatic agent and organic silicon compatible coupling agent with two active functional groups of methyl group and phenyl group.

[0030] In another embodiment, the thickness of the photosensitive layer 62 is 1-10 μm.

[0031] In another embodiment, the nano-scale conductive antistatic agent includes silver nanowires and / or nano-indium tin oxide.

[0032] The invention also discloses a method for preparing the photosensitive film, which includes the following steps:

[0033] A, polycarbonate PC material and polymethyl methacrylate PMMA material are packed in two plastic extruders 5 respectively, the photosensitive layer materia...