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Transparent anti-fog PC resin and preparation method thereof

A resin and transparent technology, which is applied in the field of transparent anti-fog PC resin and its preparation, can solve the problems of not considering the light transmittance, etc., achieve the effect of improving durability and wiping resistance, shortening the processing cycle, and optimizing the processing technology

Active Publication Date: 2021-02-05
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent does not take into account the problem of light transmission

Method used

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  • Transparent anti-fog PC resin and preparation method thereof
  • Transparent anti-fog PC resin and preparation method thereof
  • Transparent anti-fog PC resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of transparent anti-fog PC resin, the method comprises the following steps:

[0027] (1) Prepare materials according to the following components and parts by weight:

[0028]

[0029] Among them, the PC resin includes ordinary PC and silicon-containing PC, and the ordinary PC resin is mixed with two PCs with MI(300°C, 1.2kg)=4 and MI(300°C, 1.2kg)=23 according to the mass ratio of 1:1 , the total component is 78 parts, the selected silicon-containing PC is organosiloxane and polycarbonate random copolymerized PC whose refractive index is close to that of ordinary PC, the refractive index of silicon-containing PC is n=1.56, and the silicon content is 7%. The number of copies is 20;

[0030] The antioxidant is a mixture of hindered phenols and phosphites, preferably Irganox 168 and Irganox 1076 from Ciba, and the mixing ratio (mass ratio) is 1:1;

[0031] The lubricant is commercially available PETS;

[0032] The UV stabilizer is a benzotriazole...

Embodiment 2

[0036] A preparation method of transparent anti-fog PC resin, the method comprises the following steps:

[0037] (1) Prepare materials according to the following components and parts by weight:

[0038]

[0039]

[0040] (2) Put the above-mentioned PC resin, antioxidant, lubricant, and UV stabilizer in a high-speed mixer according to the formula ratio and stir them. After mixing evenly, send them into the twin-screw extruder through a metering device. The anti-fog additives are metered It is said to be fed into the extruder from the side feeding port, and the temperature of the twin-screw extruder is controlled at 240-260°C. Under the conveying, shearing and mixing of the screws, the materials are melted and compounded, and then extruded through the die , pulling, cooling, and pelletizing steps to obtain transparent anti-fog PC resin.

[0041] Among them, the common PC resin is mixed with two PCs with MI(300°C, 1.2kg)=4 and MI(300°C, 1.2kg)=23 according to the mass rati...

Embodiment 3

[0047] A preparation method of transparent anti-fog PC resin, the method comprises the following steps:

[0048] (1) Prepare materials according to the following components and parts by weight:

[0049]

[0050] (2) Put the above-mentioned PC resin, antioxidant, lubricant, and UV stabilizer in a high-speed mixer according to the formula ratio and stir them. After mixing evenly, send them into the twin-screw extruder through a metering device. The anti-fog additives are metered It is said to be fed into the extruder from the side feeding port, and the temperature of the twin-screw extruder is controlled at 240-260°C. Under the conveying, shearing and mixing of the screws, the materials are melted and compounded, and then extruded through the die , pulling, cooling, and pelletizing steps to obtain transparent anti-fog PC resin.

[0051] Among them, the common PC resin is mixed with two PCs with MI(300°C, 1.2kg)=4 and MI(300°C, 1.2kg)=23 according to the mass ratio of 1:1, and ...

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Abstract

The invention relates to transparent anti-fog PC resin and a preparation method thereof. The resin is prepared from the following raw materials in parts by weight: 90-99 parts of PC resin, 0.1-1.0 part of an antioxidant, 0.2-0.5 part of a lubricant, 1.0-10.0 parts of ananti-fog additive and 0.1-0.8 part of a UV stabilizer. When the resin is prepared, the anti-fog additive is metered and then fed into an extruder from a side feeding port. Compared with the prior art, the transparent anti-fog PC is prepared by mixing the raw materials and the anti-fog additive and then carrying out one-step extrusion molding, so that the processing technology is optimized, the processing period is shortened, precipitation or adhesion of the anti-fog additive cannot be generated when the transparent anti-fogPC is in contact with a human body, and the durability and wiping resistance of the anti-fog performance can be improved; and the anti-fog PC has high transmittance, can achieve the effects of fog prevention, high transmittance and high toughness at the same time, and is a resin material very suitable for manufacturing protective masks.

Description

technical field [0001] The invention relates to a transparent anti-fog PC resin, in particular to a transparent anti-fog PC resin and a preparation method thereof. Background technique [0002] Protective masks are an important line of defense against external viruses and germs for medical staff and ordinary wearers. On the one hand, it can block harmful viruses and germs brought in by external air or droplets, and on the other hand, it can prevent the wearer from exhaling. The droplets or germs pose a threat to the surrounding environment. [0003] However, the protective mask is close to the wearer's face, especially the mouth and nose, which can easily cause moisture condensation to form water mist, which causes light scattering and refraction, thereby reducing the permeability and comfort of the mask. Therefore, anti-fog treatment has become an important performance index for transparent mask materials. Generally, anti-fog additives can be divided into two types accord...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K5/5419
CPCC08L69/00C08L2205/025C08L2201/10C08K5/5419
Inventor 于芳芳胡建建周霆辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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