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Needle flame grade semitransparent PC (polycarbonate) material for anti-collision strip and preparation method thereof

A technology of anti-collision strip and needle flame, which is applied in the field of needle-flame grade translucent anti-collision strip PC material and its preparation, which can solve the problems of non-passability, high melt viscosity, and failure to reach the flame-retardant level, and achieve high heat resistance , good toughness and excellent comprehensive performance

Inactive Publication Date: 2012-01-25
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the melt viscosity is high, and the cotton is easy to drip and burn. Not only the flame retardant level cannot be reached, but also the needle flame test cannot be passed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The raw materials are weighed according to the following weight percentages: polycarbonate IR2200 91.3%, flame retardant FR-245 8%, flame retardant synergist TF-1645 0.5%, antioxidant 168 0.2%.

[0037] Polycarbonate is baked at 120°C for 4 hours; add the baked polycarbonate, flame retardant, flame retardant synergist and antioxidant to the high mixer and mix for 10 minutes;

[0038] The raw materials mixed in the steps are melted and extruded through a twin-screw extruder and pelletized; the twin-screw extruder process is: the temperature of the first zone of the twin-screw extruder is 180°C, the temperature of the second zone is 200°C, and the temperature of the third zone is 200°C. The temperature of the fourth zone is 240 °C, the temperature of the fourth zone is 240 °C, the temperature of the fifth zone is 245 °C, the temperature of the sixth zone is 235 °C, the temperature of the seventh zone is 230, the temperature of the eight zone is 230, the temperature of the ...

Embodiment 2

[0040] The raw materials were weighed according to the following weight percentages: polycarbonate IR2200 89.3%, flame retardant FR-245 10%, flame retardant synergist TF-1645 0.3%, antioxidant 168 0.4%.

[0041] Polycarbonate is baked at 120°C for 4 hours; add the baked polycarbonate, flame retardant, flame retardant synergist and antioxidant to the high mixer and mix for 10 minutes;

[0042] The raw materials mixed in the steps are melted and extruded through a twin-screw extruder and pelletized; the twin-screw extruder process is: the temperature of the first zone of the twin-screw extruder is 200°C, the temperature of the second zone is 220°C, and the temperature of the third zone is 220°C. The temperature of the fourth zone is 245°C, the temperature of the fifth zone is 250°C, the temperature of the sixth zone is 240°C, the temperature of the seventh zone is 235, the temperature of the eight zone is 240, the temperature of the die head is 250, the screw speed is 460r / min, t...

Embodiment 3

[0044] The raw materials were weighed according to the following weight percentages: polycarbonate IR2200 87.3%, flame retardant FR-245 12%, flame retardant synergist TF-1645 0.4%, antioxidant 168 0.3%.

[0045] Polycarbonate is baked at 120°C for 4 hours; add the baked polycarbonate, flame retardant, flame retardant synergist and antioxidant to the high mixer and mix for 10 minutes;

[0046] The raw materials mixed in the steps are melted and extruded through a twin-screw extruder and pelletized; the twin-screw extruder process is as follows: the temperature of the first zone of the twin-screw extruder is 190°C, the temperature of the second zone is 210°C, and the temperature of the third zone is 210°C. The temperature of the fourth zone is 230°C, the temperature of the fourth zone is 230°C, the temperature of the fifth zone is 235°C, the temperature of the sixth zone is 230°C, the temperature of the seventh zone is 230, the temperature of the eight zone is 235, the temperatur...

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Abstract

The invention discloses a needle flame grade semitransparent PC (polycarbonate) material for an anti-collision strip and a preparation method thereof. The needle flame grade semitransparent PC material for the anti-collision strip consists of the following components in percentage by weight: 87-92% of polycarbonate, 8-12% of flame retardant, 0.3-0.5% of flame-retarding synergist and 0.2-0.4% of antioxidant, and the flame retardant is bromotriazine. The needle flame grade semitransparent PC material for the anti-collision strip, which is prepared by the preparation method, has excellent over-all properties, high strength, good ductility and high heat resistance; grains and a workpiece after injection molding are semitransparent; during a needle flame test, the PC material extinguishes once the PC material leaves fire; further, combusting cotton does not drip; and the PC material has quite high safety performance.

Description

[Technical field] [0001] The invention relates to the field of polymer materials, in particular to a needle-flame grade semi-permeable anti-collision strip PC material and a preparation method thereof. [Background technique] [0002] In April 2010, a company needs to develop a new kind of semi-permeable anti-collision strip plastic material with extra high flame retardant level. The technical requirements for this semi-permeable anti-collision strip plastic material are: translucent, can pass the needle flame test, and the toughness and strength need to be very good. [0003] PEI (polyetherimide) is an amber transparent solid. The PEI raw material particles without any additives have flame retardancy and low smoke, the oxygen index is 47%, and the combustion grade is UL94-V-0. [0004] However, although PEI resin has good flame retardant performance, it is still unable to meet the technical requirements of semi-permeable bumper plastic material for flame retardant when burn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L25/12C08L27/18C08K5/3492C08K5/526B29C47/92B29C48/92
Inventor 徐东徐永付天英
Owner SHENZHEN KEJU NEW MATERIAL
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