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Damp-heat aging resistant polycarbonate composition and preparation method thereof

A polycarbonate and composition technology, applied in the field of polycarbonate composition and its preparation, can solve problems such as degradation, achieve the effects of reducing hydrolysis, improving flame retardancy, and suppressing performance attenuation

Active Publication Date: 2021-01-26
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbodiamine is alkaline, which may cause a certain degree of degradation of PC during the melt blending process.

Method used

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  • Damp-heat aging resistant polycarbonate composition and preparation method thereof
  • Damp-heat aging resistant polycarbonate composition and preparation method thereof
  • Damp-heat aging resistant polycarbonate composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] In this embodiment, a polycarbonate composition resistant to moisture and heat aging is prepared from the following raw materials in parts by weight:

[0065] 40 parts of bisphenol A type polycarbonate resin,

[0066] 60 parts of polysiloxane-polycarbonate,

[0067] Brominated polycarbonate 8 parts,

[0068] 8 parts of silicone flame retardant,

[0069] 8 parts of silicone toughening agent,

[0070] 4 parts of epoxy chain extender,

[0071] 0.8 parts of amino silicone oil,

[0072] 0.3 part of antioxidant,

[0073] 0.6 parts of lubricant,

[0074] 0.6 part of light stabilizer,

[0075] 0.6 parts of anti-dripping agent;

[0076] The preparation method of above-mentioned polycarbonate composition, comprises the following steps:

[0077] (1) Place the bisphenol A polycarbonate and polysiloxane-polycarbonate in a constant temperature blast drying oven at 120°C for 4 hours. Then bisphenol A polycarbonate, polysiloxane-polycarbonate, silicone toughening agent, bromi...

Embodiment 2

[0080] In this embodiment, a polycarbonate composition resistant to moisture and heat aging is prepared from the following raw materials in parts by weight:

[0081] 80 parts of bisphenol A type polycarbonate resin,

[0082] 20 parts of polysiloxane-polycarbonate,

[0083] Brominated polycarbonate 2 parts,

[0084] 2 parts of silicone flame retardant,

[0085] 2 parts silicone toughening agent,

[0086] 0.5 part of epoxy type chain extender,

[0087] 0.2 parts of amino silicone oil,

[0088] Antioxidant 0.1 part,

[0089] 0.1 parts of lubricant,

[0090] 0.3 part of light stabilizer,

[0091] 0.2 parts of anti-dripping agent,

[0092] The preparation method of above-mentioned polycarbonate composition, comprises the following steps:

[0093] (1) Place the bisphenol A polycarbonate and polysiloxane-polycarbonate in a constant temperature blast drying oven at 120°C for 4 hours. Then bisphenol A polycarbonate, polysiloxane-polycarbonate, silicone toughening agent, bromi...

Embodiment 3

[0096] In this embodiment, a polycarbonate composition resistant to moisture and heat aging is prepared from the following raw materials in parts by weight:

[0097] 50 parts of bisphenol A type polycarbonate resin,

[0098] 50 parts of polysiloxane-polycarbonate,

[0099] Brominated polycarbonate 6 parts,

[0100] Silicone flame retardant 6 parts,

[0101] 6 parts of silicone toughening agent,

[0102] 2 parts of epoxy chain extender,

[0103] 0.6 parts of amino silicone oil,

[0104] 0.25 part of antioxidant,

[0105] 0.25 parts of lubricant,

[0106] 0.5 part of light stabilizer,

[0107] 0.5 parts of anti-dripping agent;

[0108] The preparation method of above-mentioned polycarbonate composition, comprises the following steps:

[0109] (1) Place the bisphenol A polycarbonate and polysiloxane-polycarbonate in a constant temperature blast drying oven at 120°C for 4 hours. Then bisphenol A polycarbonate, polysiloxane-polycarbonate, silicone toughening agent, bromin...

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Abstract

The invention relates to a damp-heat aging resistant polycarbonate composition and a preparation method thereof. The polycarbonate composition is prepared from the following raw materials, by weight:polycarbonate, polysiloxane-polycarbonate, a flame retardant, a flexibilizer, a chain extender, amino silicone oil, an antioxidant, a lubricant, a light stabilizer and an anti-dripping agent. The chain extender is an epoxy type chain extender; and the toughening agent is an organic silicon toughening agent. The polycarbonate composition disclosed by the invention has very good damp-heat aging resistance, and has good flame retardance and mechanical properties.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a polycarbonate composition resistant to moisture and heat aging and a preparation method thereof. Background technique [0002] Polycarbonate (PC) material is almost colorless and transparent amorphous polymer with good optical properties. As an engineering plastic with superior comprehensive performance, it is rigid and tough, with excellent impact performance, good dimensional stability and electrical insulation, so it is widely used in electrical appliances, automobiles, aviation, construction and other fields. PC material has excellent comprehensive performance, but it also has its own shortcomings, such as poor processing performance, low fatigue strength, easy stress cracking, and sensitive notch, etc., which seriously limit its application. [0003] The polycarbonate structure contains ester groups, which are sensitive groups. Under the influence of humid heat aging in undergroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/10C08L69/00C08L83/04C08L83/08
CPCC08L83/10C08L69/00C08L2201/08C08L2205/035C08L2205/02C08L2205/025C08L2201/02C08L2205/06C08L2207/53C08L83/04C08L83/08
Inventor 冯刚王灿耀卢健体罗贤祖
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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