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A low-gloss, low-smoke, halogen-free, flame-retardant polycarbonate composite material

A technology of flame retardant polycarbonate and composite materials, applied in the field of polymer composite materials, can solve the problems of unimproved flame retardant and low smoke, etc.

Active Publication Date: 2020-06-05
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is also no improvement in flame retardancy and low smoke

Method used

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  • A low-gloss, low-smoke, halogen-free, flame-retardant polycarbonate composite material
  • A low-gloss, low-smoke, halogen-free, flame-retardant polycarbonate composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0049] Components and proportioning of table 1 embodiment 1-8

[0050]

[0051] Preparation method: After weighing the raw materials according to the ratio in Table 1, the raw materials were mixed in a high-speed mixer for 3 minutes, then extruded through a twin-screw extruder at 250-260 ° C, cooled, and granulated. After drying for 4 hours at 260-280°C, it is injection molded into a standard sample.

Embodiment 9

[0052] Embodiment 9: Evaluation of Implementation Effect

[0053] The samples obtained in the above-mentioned Examples 1 to 8 were tested for mechanical properties and gloss according to the American Society for Testing and Materials (ASTM) standard, tested for oxygen index according to GB / T 2406.2-2009, tested according to UIC 564-2:1991 standard For flame retardant properties, the specific optical density of smoke is tested according to GB / T 8323.2-2008 "Plastic - Smoke Generation - Part 2: Test Method for Measuring Smoke Density by Single Chamber Method". The test results are shown in Table 2 below:

[0054] Table 2 performance test results

[0055]

[0056] Remarks: Ds1.5—the specific optical density of smoke at 1.5 minutes from the beginning of the test;

[0057] Ds4.0—the specific optical density of smoke at 4.0 minutes from the beginning of the test.

[0058] The test performance results in Table 2 show that:

[0059] (1) From the analysis of Examples 1 to 4, the ...

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Abstract

The invention relates to the field of polymer composite materials, in particular to a low-gloss, low-smoke, halogen-free flame-retardant polycarbonate composite material, which comprises the following components by weight percentage: branched polycarbonate resin 70-90%, PC composite Resin 5‑20%, epoxy reactive compatibilizer 1‑5%, matting agent 0.5‑2%, sulfonate flame retardant 0.1‑1%, polysiloxane flame retardant 0.1‑1%, auxiliary agent 0.5‑1.5%. The invention has the advantages that: the PC composite resin, the epoxy-reactive compatibilizer, and the matting agent have a good synergistic effect, which ensures that the composite material has a lower gloss, and does not affect the flame retardancy and smoke density of the material , among them, the high concentration of epoxy groups plays the role of chain extension and crosslinking, which can play a certain extinction effect on polyester materials; branched PC, compound sulfonate flame retardant, polysiloxane flame retardant agent, on the basis of ensuring flame retardancy, the smoke density in the combustion process test is very low.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a low-gloss, low-smoke, halogen-free flame-retardant polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate, because of its heat resistance, flame retardancy, good impact resistance, easy processing and low cost, is widely used in electronic appliances, automobiles, machinery manufacturing, computers and other technical fields. In recent years, with the understanding of polycarbonate sheets, more and more project applications of polycarbonate replacing glass and FRP materials have appeared on rail vehicles, focusing on interior materials for non-structural parts, such as luggage racks, small Table boards, seat panels, lampshades, interior door partitions, etc. However, the polycarbonate material itself has high brightness, and the application of vehicle interior materials that need to be matte and minimize reflect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L25/14C08L25/12C08L83/04C08K13/04C08K5/00C08K7/14C08K5/42C08K5/103C08K5/134C08K5/526
CPCC08L69/00C08L2201/02C08L2205/025C08L2205/035C08L2312/00C08L25/14C08L25/12C08L83/04C08K13/04C08K7/14C08K5/42C08K5/103C08K5/1345C08K5/526C08K5/00
Inventor 朱爱华赵志刚程方清张毅岳同健张龙李盛科胡同云
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC
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