Permanent antistatic polycarbonate composite and preparation method thereof

A technology of polycarbonate and composition, which is applied in the field of permanent antistatic transparent polycarbonate composition and its preparation, and can solve the problem that polycarbonate molding temperature cannot be used to prepare transparent PC materials, the surface is easy to accumulate static charges, and the material is destroyed Process and other issues, to achieve the effect of easy automatic control, improved melt fluidity, and high transparency

Inactive Publication Date: 2013-08-14
ZHEJIANG JAVA SPECIALTY CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high surface resistance of untreated polycarbonate materials (greater than 10 15 ? / square), when friction occurs, the surface is easy to accumulate static charge and bring many adverse consequences
Especially today with the popularization of electronic instruments and the rapid development of microelectronics technology, there are more and more problems such as material damage and poor manufacturing process caused by static electricity, and the impact is becoming more and more serious. Too high to be used in the preparation of transparent PC materials with durable antistatic properties

Method used

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  • Permanent antistatic polycarbonate composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0028] Add 191g of polycarbonate, 1g of polyvinylidene fluoride, 3g of other additives, and 5g of tri-n-butylmethylamine bis(trifluoromethanesulfonyl)imide salt into a Haake rheometer at 260°C for 15 minutes and then extrude through a twin-screw It is extruded, cut into pellets and dried before packaging. The temperature of each zone of the twin-screw extruder is set at 240°C-270°C. The prepared composition was thermocompressed at 250° C., and its surface resistance, volume resistance and light transmittance were measured.

Embodiment example 2

[0030] Add 186g of polycarbonate, 1g of polyvinylidene fluoride, 3g of other additives, and 10g of tri-n-butylmethylamine bis(trifluoromethanesulfonyl)imide salt into a Haake rheometer at 260°C for 15 minutes and then extrude through a twin-screw It is extruded, cut into pellets and dried before packaging. The temperature of each zone of the twin-screw extruder is set at 240°C-270°C. The prepared composition was thermocompressed at 250° C., and its surface resistance, volume resistance and light transmittance were measured.

Embodiment example 3

[0032] Add 176g of polycarbonate, 1g of polyvinylidene fluoride, 3g of other additives, and 20g of tri-n-butylmethylamine bis(trifluoromethanesulfonyl)imide salt into a Haake rheometer at 260°C for 15 minutes and then extrude through a twin-screw It is extruded, cut into pellets and dried before packaging. The temperature of each zone of the twin-screw extruder is set at 240°C-270°C. The prepared composition was thermocompressed at 250° C., and its surface resistance, volume resistance and light transmittance were measured.

[0033] Table 1 Surface resistance, volume resistance and light transmittance test results of implementation cases 1-3

[0034]

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Abstract

The invention relates to a permanent antistatic polycarbonate composite and a preparation method thereof. The permanent antistatic polycarbonate composite comprises the following components in percentage by weight: 99%-87.5% of polycarbonate, 0.5% of fluoro-substitution polyolefin additives, 0.5%-10% of antistatic agents and 0.1%-2% of other auxiliary agents. The preparation method comprises the following steps of: firstly placing the polycarbonate, the fluoro-substitution polyolefin additives and ionic liquid into an internal mixer, and melting and blending at 260 DEG C till uniform mixing; and carrying out melt extrusion on a mixed material obtained through the processing of the process through a double-screw extruder, granulating, and then drying. The obtained permanent antistatic polycarbonate composite has the advantages of good product penetrability, excellent antistatic property, less influence of air humidity on the antistatic property of a material, lasting antistatic property, simple process, convenience for processing, small usage amount of the ionic liquid antistatic agents and the other auxiliary agents and less influence on the self impact resistance and formability of the polycarbonate, meets the requirement for environment protection, is nontoxic and harmless in raw material and is discovered that no toxic element exists through chemical analysis.

Description

technical field [0001] The invention relates to a permanent antistatic transparent polycarbonate composition and a preparation method thereof, in particular to a permanent antistatic transparent polycarbonate composition which has good transparency, excellent antistatic performance, meets environmental protection requirements, and has no toxic elements. Preparation. Background technique [0002] Due to its good mechanical properties and outstanding optical properties, polycarbonate is widely used in construction, automobile manufacturing, medical, aerospace, packaging, electronic appliances and optical lens industries, and has become the fastest growing among the five major engineering plastics general engineering plastics. However, due to the high surface resistance of untreated polycarbonate materials (greater than 10 15 ? / square), when friction occurs, the surface is easy to accumulate static charge and bring many adverse consequences. Especially today with the popula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L27/18C08L27/16C08K5/00C08K5/43
Inventor 徐力群周华群
Owner ZHEJIANG JAVA SPECIALTY CHEM CO LTD
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