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Flame retardant polycarbonate composition, method of making and of using the same

A technology of polycarbonate and composition, which is applied in the field of flame-retardant polycarbonate composition, and can solve problems such as unsatisfactory

Active Publication Date: 2018-05-11
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the consumer electronics industry increasingly requires lighter and thinner materials, blends of polycarbonate with conventional halogen-free additives such as organophosphates are increasingly unsatisfactory for thinner flame retardant grades. retardancy rating) and higher fluidity without significantly sacrificing the mechanical strength of the material

Method used

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  • Flame retardant polycarbonate composition, method of making and of using the same
  • Flame retardant polycarbonate composition, method of making and of using the same
  • Flame retardant polycarbonate composition, method of making and of using the same

Examples

Experimental program
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Effect test

Embodiment 1-10

[0107] According to Table 4 and the properties shown, Examples E1 to E10 were prepared. Temp. refers to the temperature.

[0108] As shown in Examples E1 and E3, the combination of phosphine oxide FR additive (TPPO) and EXL can result in a UL94V0 rating at a thickness of 0.6 mm or less and an impact strength greater than 500 J / m at a temperature of 23°C (NII ), while maintaining satisfactory material flow capability. As shown in Example E2, replacement of the phosphine additive of Example El with a phosphate ester FR additive (BPADP) resulted in lower MFR values, reduced impact strength, and reduced FR performance. As shown in Examples E4 and E10, compositions without EXL have poor flame and impact properties.

[0109]

[0110]

[0111] N.R. stands for No Rating, where samples show extremely low flame performance and fail to achieve the UL94 standard

[0112] Example E3 shows that the composition has good flame retardancy even at 0.5mm and good impact strength at 23°C...

Embodiment approach 1

[0114] Embodiment 1: A composition comprising 55 to 85wt% polycarbonate, 10 to 25wt% organopolysiloxane-polycarbonate block copolymer, 5 to 15wt% based on the total weight of the composition Phosphine oxide, and 0 to 3 wt % impact modifier.

Embodiment approach 2

[0115] Embodiment 2: The composition according to Embodiment 1, wherein the phosphine oxide comprises triphenylphosphine oxide.

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Abstract

In an embodiment, a composition comprises, based on the total weight of the composition, 55 to 85 wt% of a polycarbonate; 10 to 25 wt% of an organopolysiloxane-polycarbonate block copolymer; 5 to 15 wt% of a phosphine oxide; and 0 to 3 wt % of an impact modifier. In another embodiment, a method of making a composition comprises extruding a mixture to form a composition comprising, based on the total weight of the composition, 55 to 85 wt% of a polycarbonate; 10 to 25 wt% of an organopolysiloxane-polycarbonate block copolymer; 5 to 15 wt% of a phosphine oxide; and 0 to 3 wt % of an impact modifier, namely extruding the polycarbonate, the organopolysiloxane- polycarbonate block copolymer, and the phosphine oxide to form the composition.

Description

technical field [0001] The present disclosure relates to flame retardant polycarbonate compositions, methods of preparation and uses thereof. Background technique [0002] Due to their excellent heat resistance and clarity, polycarbonates are useful in the manufacture of articles and components for a variety of applications. Due to their widespread use, especially in consumer electronics markets such as computer and television (TV) applications, it is desirable to provide polycarbonates with halogen-free flame retardancy, good flow and mechanical strength. However, as the consumer electronics industry increasingly requires lighter and thinner materials, blends of polycarbonate with conventional halogen-free additives such as organophosphates are increasingly unsatisfactory for thinner flame retardant grades. retardancy rating) and higher fluidity without significantly sacrificing the mechanical strength of the material. [0003] Accordingly, there remains a need in the art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08G77/448
CPCC08K5/5397C08G77/448C08L51/04C08L83/10C08L69/00B29C48/0022B29B7/90B29B9/10C08K5/0066C08J3/203C08J2369/00C08J2483/10C08L2201/02C08L2205/025
Inventor 陈林魏振柯郑芸石洪涛
Owner SHPP GLOBAL TECH BV