High-strength antistatic transparent polycarbonate film and preparing method thereof

A polycarbonate, antistatic technology, applied in the field of materials, can solve the problems of lower product yield, easy migration, lower transparency, etc., achieve good antistatic performance, solve limitations, and improve mechanical properties

Active Publication Date: 2016-04-20
JINGMEN TIANHUA PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, under normal circumstances, a large amount of conductive additive is required to achieve the effect of conductivity (antistatic), but when the amount of filler is added to a certain level, the transparency of polycarbonate resin will be greatly reduced, thereby affecting Use of polycarbonate
Another method is to add organic ionic surfactants to polycarbonate resin, but it is difficult to be effectively dispersed due to its poor compatibility with polycarbonate materials, and organic surfactants are easy to migrate in a short time to the surface of polycarbonate products; at the same time, after the product is washed with water, the organic surfactant is easily washed off, resulting in a short antistatic life of the product
Another is to add organic non-ionic surfactants (such as ethoxylated alkyl acid amines, glycerol stearate, etc.), this antistatic agent has relatively good compatibility with polycarbonate, However, a large amount of addition is required to achieve a good antistatic effect; at the same time, since non-ionic surfactants are also easy to migrate to the surface of the product, the product is prone to oil spots and reduces the yield of the product

Method used

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  • High-strength antistatic transparent polycarbonate film and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1-3

[0029] In the following examples 1-3:

[0030] Tin oxide antistatic gels are prepared according to the following preparation method:

[0031] Disperse tin oxide powder with a particle size of 0.5-2um into a water-soluble acrylic resin emulsion (acrylic resin content in the emulsion is 48-52wt%), the mass ratio of tin oxide powder to water-soluble acrylic resin emulsion is 1:4, 60°C Stir until a sol is formed, and then stand at 25°C to form a tin oxide antistatic gel;

[0032] Ultrafine alumina: particle size 100-300nm, white color, specific surface area > 50m 2 / g;

[0033] Ultrafine magnesium oxide: particle size 300-800nm, white color, specific surface area > 80m 2 / g;

[0034] Dendritic macromolecule quaternary ammonium salts are all prepared by grafting three-generation dendritic macromolecules with dodecane bromide or hexadecane bromide. References: Zheng Nengeng, Ye Zhongbin, Guo Yongjun, Su Songtao, Xu Hui , Liu Jianxin. Synthesis and clay stability of two polyamid...

Embodiment 1

[0037] A high-strength antistatic transparent polycarbonate film is prepared from raw polycarbonate, an antistatic agent compound system, an inorganic nano compound system, a compatibilizer and an antioxidant. The parts by weight of the above-mentioned raw materials are respectively :

[0038] 100 parts of polycarbonate (molecular weight is 50,000-70,000);

[0039] Antistatic agent compound system (according to the mass ratio of tin oxide antistatic gel: dendrimer quaternary ammonium salt is 1:1) 8 parts;

[0040] Inorganic nanocomposite system (according to the mass ratio of superfine alumina: superfine magnesium oxide is 2:1 mixed) 8 parts;

[0041] The compatibilizer is 0.5 part of polymer compatibilizer EVA (molecular weight is 10,000-20,000);

[0042] Antioxidant (antioxidant 1010) 0.5 part.

[0043] The antistatic agent compound system is prepared by directly blending and stirring tin oxide antistatic gel and dendrimer quaternary ammonium salt in proportion for 5-8 mi...

Embodiment 2

[0046] A high-strength antistatic transparent polycarbonate film is prepared from raw polycarbonate, an antistatic agent compound system, and an inorganic nano compound system. The parts by weight of the above raw materials are respectively:

[0047] 100 parts of polycarbonate (molecular weight is 60,000-80,000);

[0048] Antistatic agent compound system (according to the mass ratio of tin oxide antistatic gel: dendrimer quaternary ammonium salt is 3:1) 5 parts;

[0049] Inorganic nano-composite system (mixed according to the mass ratio of ultra-fine alumina: ultra-fine magnesium oxide at 2:3) 5 parts.

[0050] The antistatic agent compound system is prepared by directly blending and stirring tin oxide antistatic gel and dendrimer quaternary ammonium salt in proportion for 5-8 minutes, and drying in an oven at 80°C for 2 hours.

[0051] The preparation method of the high-strength antistatic transparent polycarbonate film: blending the antistatic agent compound system and the ...

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Abstract

The invention belongs to the technical field of materials, and particularly discloses a high-strength antistatic transparent polycarbonate film and a preparing method thereof. The high-strength antistatic transparent polycarbonate film is prepared from, by weight, 100 parts of polycarbonate, 5-10 parts of antistatic agent compounded system, 5-10 parts of inorganic nanometer compounded system, 0-1 part of compatilizer and 0-1 part of antioxidant. The prepared polycarbonate film has high anti-static function and transparency, and light transmittance can be over 90%. Meanwhile, the film has excellent mechanical property, and the surface of the film is resistant to scraping. The film is especially suitable for static sensitive transparent polycarbonate film products such as mobile phone screens, precise instruments and electronic products.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a high-strength antistatic transparent polycarbonate film and a preparation method thereof. Background technique [0002] In recent years, due to the rapid popularization of touch-screen mobile phones, precision instruments, electronic products and other products, problems such as material damage and poor manufacturing process caused by static electricity have increased, and the impact has become increasingly serious. In order to solve these problems, materials are required to have excellent antistatic (conductivity). Polycarbonate is an important engineering plastic with excellent impact resistance, optical transparency, electrical insulation, dimensional stability and other comprehensive properties. Therefore, polycarbonate is widely used in many optical parts such as optical discs, mobile phone screens, precision instruments, electrical, electronic products, optical correct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/08C08L33/00C08L87/00C08K13/02C08K3/22C08K5/134
CPCC08K2201/011C08K2201/017C08L69/00C08L2201/04C08L2201/10C08L2203/16C08L2205/035C08L23/0853C08L33/00C08L87/00C08K13/02C08K2003/2231C08K5/1345C08K2003/2227C08K2003/222
Inventor 杜军戴洪湖汪连生王锋丁瑜郭连贵覃彩芹
Owner JINGMEN TIANHUA PACKING
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