Halogen-free flame-proof static resistant polycarbonate composition and method for producing the same

A flame retardant and antistatic polycarbonate technology, which is applied in the field of polycarbonate resin composition and preparation, can solve the problems of thermal oxygen degradation, halogen-free flame retardant and antistatic, etc. The effect of mitigating the impact

Inactive Publication Date: 2009-08-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN1681885A discloses flame retardant and antistatic polycarbonate resin composition using phosphoric acid ester as flame retardant and organic antistatic agent such as polyether ester amide as antistatic agent. Using organic antistatic agent may cause molding process Thermal oxygen degradation, and most organic antistatic agents must have antistatic properties under a certain ambient humidity
[0006] In the above-mentioned prior art, although the flame retardant has better performance in one aspect, it also has excellent antistatic properties, flame retardancy, impact resistance and moldability, and the halogen-free flame retardant that does not contain chlorine and bromine Burning antistatic has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Disperse and mix 200g of the third phase polymer 1, 95g of flame retardant 1, 55g of flame retardant 2, 24g of conductive filler 1, and 2g of antioxidant B215 in a high-speed mixer, and melt-extrude through a twin-screw machine to obtain an intermediate composition , the temperature of each zone of the screw barrel of the twin-screw extruder used is 240-270°C; then the obtained intermediate composition, 500g polycarbonate, 120g impact modifier, 2g fluorine-substituted polyolefin are dried separately and mixed with 2g antioxidant Agent B215 is dispersed and mixed by a high-speed mixer, melted and extruded by a twin-screw machine, dried, pelletized, and packaged. The temperature of each zone of the twin-screw extruder barrel used is 240-270°C. The prepared composition is injection molded into a standard sample bar for testing according to the standard size, and the notched Izod impact strength test is carried out with reference to GB / T1843-2002; the tensile performance te...

Embodiment 2～20

[0055] According to the preparation method of Example 1, the halogen-free flame-retardant antistatic polycarbonate composition was prepared, and the raw materials and dosage in the relevant formulation are shown in Tables 1-4.

[0056] Table 1 Example formula table

[0057] components Contrast 1 Example 1 Example 2 Example 3 Example 4 Example 5 PC(g) 986 500 700 600 578 573 Third Phase Polymer 1 (g) 0 200 137 50 180 180 Impact modifier 1 (g) 0 120 80 150 95 95 Flame retardant 1(g) 0 95 0 50 80 80 Flame retardant 2(g) 0 55 30 45 45 45 Fluorine-substituted polyolefin (g) 0 2 2 2 2 2 Conductive filler 1 (g) 10 24 47 100 0 15 Conductive filler 2 (g) 0 0 0 0 10 5 Other additives (g)

[0058] Table 2 Example formula table

[0059] components Example 6 Example 7 Example 8 Example 9 Example 10 PC(g) 500 700 600 573 573 Tertiary Phase Polyme...

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Abstract

The invention discloses a halogen-free flame retardant antistatic polycarbonate composition and a preparation method thereof. The composition comprises the components based on parts by weight: 50-70 parts of polycarbonate, 5-20 parts of polymer which can form a third phase, 8-15 parts of impact modifier, 3-15 parts of phosphonium flame retardant, 0.2 part of fluoro-polyolefine additive, 1-10 parts of conducting material and 0.1-1 part of other accessory ingredient. When in operation, the polymer which can form the third phase, the phosphonium flame retardant, the conducting material and other accessory ingredient are firstly melted and extruded by a double screw extruder to prepare intermediate composition; after being melted and extruded by the double screw extruder, the intermediate composition, the polycarbonate, the impact modifier and the fluoro-polyolefine additive are pelleted and then dried. The composition prepared by the invention does not contain chlorine and bromine, has excellent antistatic property, flame retardance, impact resistance and formability and needs a little conductive filler.

Description

technical field [0001] The invention relates to a polycarbonate resin composition and a preparation method, in particular to a chlorine- and bromine-free, halogen-free, flame-retardant, antistatic polycarbonate that provides excellent antistatic properties, flame retardancy, impact resistance and moldability. Ester compositions and methods for their preparation. Background technique [0002] In general, polycarbonate is an electrical insulating material, but there are many applications requiring electrical conductivity (antistatic, electromagnetic shielding, etc.) as members of electrical and electronic components. Among them, transfer rollers for copiers, sheets for flexible trays for transporting electrical components, and mounting tapes for transporting electronic components sometimes require conductive sheets or films with a thickness of 5 mm or less. Due to the popularization of electronic instruments and the rapid development of microelectronics technology, problems s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/12C08L25/06C08L67/02C08L53/02C08L51/06C08K13/02C08K3/02C08K5/521C08K3/04C08K7/06B29C47/00B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92895
Inventor 赵建青周建波刘述梅
Owner SOUTH CHINA UNIV OF TECH
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