A kind of high hardness composite material

Abstract

The invention belongs to the technical field of composite materials, and in particular relates to a high-hardness composite material. From top to bottom, the composite material sequentially includes a first polycarbonate layer, a polymethyl methacrylate layer and a second polycarbonate layer. The upper surface of the polycarbonate layer is printed with a nano-transparent film; its preparation method is: in the first step, in a multi-slit coating device, melted polycarbonate, melted polymethyl methacrylate and melted Polycarbonate is injected into the cooling roller from three adjacent slits at the same time, so that the three molten layers are solidified and formed at one time to obtain the main material; in the second step, the nano transparent film is printed on one of the main material by the roller On the surface. Compared with the existing technology, phenol has the following advantages through the ingenious compounding of PMMA and PC and the use of ingenious production technology: light, high transparency, high light transmittance, high hardness, high transmittance, and suitable haze , Suitable softness, no bending, no cracking.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a high-hardness composite material. Background technique [0002] Traditional touch screen covers of mobile phones or tablet computers are made of glass, but glass touch screen covers have at least the following defects: [0003] One is that the glass is easy to break and there are potential dangers, and the glass is relatively heavy, which is not conducive to the development of thinner and lighter mobile phones or tablets; [0004] The second is that the glass material touch screen cover plate in the prior art has a small haze, which makes it impossible to see the content displayed on the mobile phone when looking at the mobile phone under sunlight. The light intensity accounts for the percentage of the total transmitted light intensity, and the greater the haze, the lower the gloss and transparency of the film, especially the imaging degree. [0005] For the first...

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Problems solved by technology

[0003] One is that the glass is easy to break and there are potential dangers, and the glass is relatively heavy, which is not conducive to the development of thinner and lighter mobile phones or tablets;

[0004] The second is that the glass material touch screen cover plate in the prior art has a small haze, which makes it impossible to see the content displayed on the mobile phone when looking at the mobile phone under sunlight. The light intensity accounts for the percentage of the total transmitted light intensity, and the greater the haze, the lower the gloss and transparency of the film, especially the imaging degree

[0005] For the first defect, there are currently touch screen covers made of PMMA, but the flexibility or bending strength of PMMA is insufficient, and it is easy to cause deformation when used on a touch screen

[0006] For the second defect, the current main solution is to perform a chemical coating operation on the glass cover, using the unevenness caused by the particles in the coating to increase its haze, but the coating formed by this method is easy to fall off, And it is easy to cause uneven distribution of particles, which affects the use effect

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