Environment friendly fire retardant no-halogen PC composite material and its preparation method

A composite material and environmental protection technology, which is applied in the field of non-halogen environment-friendly flame retardant PC composite material and its preparation, can solve the problems of insufficient filling fluidity of injection-molded thin-walled plastic parts and high injection molding temperature, and achieve good fluidity, The effect of easy injection molding

Inactive Publication Date: 2010-05-26
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the non-halogen environment-friendly flame retardant PC: 945-701# of GE Company of the United States is not good enough in the actual application of injection molded thin-walled plastic parts, and requires high injection molding process temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Premix is ​​prepared according to the following formula: polycarbonate 91%, silicon flame retardant 1%, flame retardant anti-dripping agent 1%, potassium sulfonate 1%, antioxidant 6%. The mixed premix is ​​placed in a twin-screw machine for melt extrusion and granulation. The process is as follows: the temperature of the first stage of the twin-screw machine is 220-230 degrees, the temperature of the second stage is 250-260 degrees, the temperature of the third stage is 260-270 degrees, the residence time is 1-2 minutes, and the pressure is 10-15MPa.

Embodiment 2

[0023] Example 2: Premix is ​​prepared according to the following formula: polycarbonate 90%, silicon flame retardant 3%, flame retardant anti-dripping agent 2%, potassium sulfonate 1%, antioxidant 4%. The mixed premix is ​​placed in a twin-screw machine for melt extrusion and granulation. The process is as follows: the temperature of the first stage of the twin-screw machine is 220-230 degrees, the temperature of the second stage is 250-260 degrees, the temperature of the third stage is 260-270 degrees, the residence time is 1-2 minutes, and the pressure is 10-15MPa.

Embodiment 3

[0024] Embodiment 3: The premix is ​​prepared according to the following formula: polycarbonate 92%, silicon flame retardant 4%, flame retardant anti-dripping agent 0.5%, potassium sulfonate 0.5%, antioxidant 3%. The mixed premix is ​​placed in a twin-screw machine for melt extrusion and granulation. The process is as follows: the temperature of the first stage of the twin-screw machine is 220-230 degrees, the temperature of the second stage is 250-260 degrees, the temperature of the third stage is 260-270 degrees, the residence time is 1-2 minutes, and the pressure is 10-15MPa.

[0025] The following table is the performance comparison table of the non-halogen environment-friendly flame-retardant PC of GE company in the prior art: 945-701# and the non-halogen environment-friendly flame-retardant PC composite material embodiment 1-3 of the present invention:

[0026] Test items

GE company

945-701#

Example 1

Embodiment 2

Embodiment 3

...

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PUM

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Abstract

The present invention discloses one kind of environment friendly fire retardant PC composition material and its preparation process. The composition material is compounded with polycarbonate 90-92 wt%, silica fire retardant 1-4 wt%, fire retarding drop-resisting agent 0.5-2 wt%, potassium sulfonate 0.5-1 % and antioxidant 3-6 wt%. The environment friendly fire retardant PC composition material hashigh mold-filling flowability and easy injection molding, and is suitable for injection molding thin-wall shell for electronic and electric equipment.

Description

[Technical field] [0001] The invention relates to the technical field of polymer materials, in particular to a non-halogen environment-friendly flame-retardant PC composite material and a preparation method thereof. The non-halogen environment-friendly flame-retardant PC composite material is used in injection molding electronic and electrical equipment shells, especially thin-walled plastic parts. [Background technique] [0002] Polycarbonate (PC), due to its excellent weather resistance, high impact resistance, and excellent electrical insulation, is used in the fields of electronic and electrical, automotive, and machinery industries. However, unmodified polycarbonate still has shortcomings. It is manifested in insufficient processing fluidity and insufficient flame retardancy. Polycarbonate has been modified to overcome the above disadvantages. GE, a famous foreign polycarbonate manufacturer, has developed and produced a non-halogen environment-friendly flame retardan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K5/54B29C47/40B29C47/92B29B9/12C08L27/18C08K5/524B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92514B29C2948/92561B29C2948/92895B29C2948/9298
Inventor 徐东贺永何国洪
Owner SHENZHEN KEJU NEW MATERIAL
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