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PC (Poly Carbonate) scuffing-resistant lens and preparation method thereof

A technology of anti-scratch and lens, which is applied in the field of resin lens preparation technology, can solve the problems of low bending strength, poor light transmittance, low impact strength of cantilever beam, etc., and achieve good self-lubricating effect

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above technical problems, the present application provides a PC anti-scratch lens and its preparation method, which solves the technical problems of existing spectacle lenses such as low hardness, low cantilever impact strength, poor light transmittance and low bending strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 100 parts of PC according to the ratio of parts by weight; 3 parts of barium stearate; 30 parts of LDPE; 0.5 parts of cadmium stearate; 2 parts of maleic anhydride; 1 part of dibutyltin dilaurate; 0.2 parts of ester; 1 part of silicon dioxide; 20 parts of EVA; 10 parts of NX8000 nucleating agent; 25 parts of DCP; 0.2 parts of benzoic acid; 5 parts of hydrogenated butadiene; 35 parts of DOP;

[0022] Add PC, barium stearate, LDPE and maleic anhydride into the kneader, raise the temperature to 80°C, stir for 5 minutes, then add the remaining raw materials, raise the temperature to 110°C, and knead for 10 minutes.

[0023] Put the mixed material into a twin-screw extruder to extrude and granulate, the temperature is 110°C, 160°C, 190°C, 200°C and 210°C, the screw temperature is 150°C, the rotation speed is 120r / min, calendering and curing, trimming after curing , rounding, coating, cleaning, drying, and then inspect and pack.

[0024] The light transmittance of the ...

Embodiment 2

[0026] Weigh 100 parts of PC according to the ratio of parts by weight; 5 parts of barium stearate; 40 parts of LDPE; 1.5 parts of cadmium stearate; 10 parts of maleic anhydride; 3 parts of dibutyltin dilaurate; 0.8 parts of ester; 5 parts of silicon dioxide; 40 parts of EVA; 20 parts of NX8000 nucleating agent; 35 parts of DCP; 0.6 parts of benzoic acid; 15 parts of hydrogenated butadiene; 45 parts of DOP;

[0027] Add PC, barium stearate, LDPE and maleic anhydride into the kneader, raise the temperature to 100°C, stir for 15 minutes, then add the remaining raw materials, raise the temperature to 130°C, and knead for 20 minutes.

[0028] Put the mixed material into a twin-screw extruder to extrude and granulate, the temperature is 110°C, 160°C, 190°C, 200°C and 210°C, the screw temperature is 150°C, the rotation speed is 120r / min, calendering and curing, trimming after curing , rounding, coating, cleaning, drying, and then inspect and pack.

[0029] The light transmittance o...

Embodiment 3

[0031] Weigh 100 parts of PC according to the ratio of parts by weight; 3.5 parts of barium stearate; 33 parts of LDPE; 0.8 parts of cadmium stearate; 4 parts of maleic anhydride; 1.5 parts of dibutyltin dilaurate; 0.4 parts of ester; 2 parts of silicon dioxide; 25 parts of EVA; 12 parts of NX8000 nucleating agent; 27 parts of DCP; 0.3 parts of benzoic acid; 9 parts of hydrogenated butadiene; 36 parts of DOP;

[0032]Add PC, barium stearate, LDPE and maleic anhydride into the kneader, raise the temperature to 85°C, stir for 8 minutes, then add the remaining raw materials, raise the temperature to 115°C, and knead for 12 minutes.

[0033] Put the mixed material into a twin-screw extruder to extrude and granulate, the temperature is 110°C, 160°C, 190°C, 200°C and 210°C, the screw temperature is 150°C, the rotation speed is 120r / min, calendering and curing, trimming after curing , rounding, coating, cleaning, drying, and then inspect and pack.

[0034] The light transmittance of...

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Abstract

The invention discloses a PC (Poly Carbonate) scuffing-resistant lens and a preparation method thereof. The PC scuffing-resistant lens is prepared by the following steps of weighing PC, barium stearate, LDPE, cadmium stearate, maleic anhydride, dibutyl tin dilaurate, a heat stabilizer, silica, EVA, a NX8000 nucleating agent, a crosslinking agent, benzoic acid, hydrogenated butadiene, DOP and a styrene block copolymer according to weight ratio, kneading, carrying out extrusion pelletization, curing, trimming, rolling circle, plating a film, cleaning, drying, testing and then packaging. With the adoption of the PC scuffing-resistant lens, the product transmittance is 95-98 percent and is increased by 5-15 percent; the haze is 1-3 percent; the impact strength of a cantilever beam 900-1000J / m, and the impact strength of a notch at 30 DEG C below zero is 18-20kJ / m<2>; the refractive index is 1.8-2.0 and is increased by 0.2-0.5; the bending strength is 125-130MPa.

Description

technical field [0001] The application belongs to the field of resin lens preparation technology, and in particular relates to a PC anti-scratch lens and a preparation method thereof. Background technique [0002] Lenses are framed frames suitable for clipping into frames, a piece of glass or other transparent material with one or more curved surfaces. Make things appear clear, larger or smaller when viewed through it. Usually used in glasses, cameras, binoculars, etc. Glass lenses are more scratch-resistant than lenses made of other materials, but their weight is relatively heavy, and their refractive index is relatively high: ordinary lenses are 1.523, ultra-thin lenses are above 1.72, and the highest can reach 2.0; glass lenses Excellent optical properties, not easy to scratch, high refractive index. The higher the refractive index, the thinner the lens. However, the glass sheet is fragile and the material is heavy. Resin is an secretion of hydrocarbons (hydrocarbons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/08C08K13/02C08K3/36C08K5/098C08K5/12C08K5/14C08K5/524B29C47/92G02B1/04B29C48/92
Inventor 周佳瑜
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