Polycarbonate resin for temperature-change-resistant optical component and preparation method and application of polycarbonate resin

Abstract

The invention provides polycarbonate resin for a temperature change resistant optical component and a preparation method and application of the polycarbonate resin, the polycarbonate resin comprises a structural unit as shown in a formula A, and optional structural units as shown in a formula B and a formula C. The polycarbonate resin not only has the properties of high refractive index, high light transmittance and the like, but also has good temperature change resistance, the performance stability within the range of -20 DEG C to 100 DEG C can be improved, and particularly, the light transmittance value is remarkably reduced along with the change of the temperature. The use requirements of an optical lens in high and low temperature environments can be met, the manufacturing method is simple, and the industrial prospect is achieved.

Description

technical field [0001] The invention relates to the field of polycarbonate, in particular to a polycarbonate resin for temperature-resistant variable optical components, a preparation method and application thereof. Background technique [0002] The lens is a key component of mobile phones, cameras, VR / AR and other equipment, and the lens material in the lens is a key factor in determining the image quality of the lens. Optical resin is easy to form and has high production efficiency. Currently, more and more lenses are made of optical resin. The global shipment of mobile phone lenses in 2019 is about 6 billion. In the future, mobile phone cameras will develop towards the trend of multi-cameras. Mobile phone lenses will grow at an annual growth rate of 20%, and the annual growth rate of high refractive index optical resin materials will be about 10% ~15%, the market prospect is good. [0003] Bisphenol A polycarbonate resins are widely used for optical lenses, but due to t...

AI Technical Summary

Problems solved by technology

However, the introduction of heteroatoms also brings some negative effects to the performance of the resin, such as easy to cause yellowing of the polymer, increase in b value, yellowing and distortion of the image when used in optical lenses, and the light transmittance of the lens also exists. Negative Effects

[0008] It can be seen that the operating temperature of the optical polycarbonate resin lenses provided in the prior art is mostly limited to the normal temperature range of -20 to 50°C, and the temperature resistance is poor. The optical resin properties such as refractive index and light transmittance will vary with the environment. Temperature degrades outside this range, well below the stability of glass lenses

For example, in the field of automotive and security lenses, the ambient temperature can usually reach above 40°C. The existing optical resin lenses are difficult to meet the demand, and the refractive index and light transmittance drop significantly, which affects the imaging effect.

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