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Flame-retardant polycarbonate composition and preparation method thereof

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the field of engineering plastics, can solve the problems of difficulty in dispersing flame retardants, degradation of flame-retardant properties of materials, and easy addition of additives, etc., to solve surface flushing and pitting , Solve the unstable flame retardant performance, solve the effect of unsatisfactory flame retardant performance

Active Publication Date: 2015-04-08
SHENZHEN HALCYON NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flame retardant effect of organic sulfonate flame retardants is remarkable, there are still some problems in the application of organic sulfonate flame retardants in polycarbonate flame retardancy: (1) it is easy to appear in a saturated state; (2) alone It cannot meet the higher flame retardant requirements when used, and is not suitable for the preparation of thin-walled components; (3) it is difficult to disperse flame retardants in polycarbonate resin; (4) it is expensive
If the ratio of the two additions is inappropriate, it is easy to cause antagonism between the two flame retardants, resulting in a decrease in the flame retardant performance of the material.
[0009] In addition, the surface scratch resistance of polycarbonate material is very poor, which greatly reduces the aesthetic effect of the product, and the scratches on the surface of the product will also lead to stress concentration, so polycarbonate material has a great impact on the surface performance of the product. Applications in demanding fields are limited to a certain extent. Therefore, improving the scratch resistance of the surface of polycarbonate materials is also of great engineering practical significance.

Method used

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  • Flame-retardant polycarbonate composition and preparation method thereof
  • Flame-retardant polycarbonate composition and preparation method thereof
  • Flame-retardant polycarbonate composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: The flame retardant polycarbonate composition of this embodiment includes the following components in parts by mass: .

[0052]

[0053]

[0054] The method for preparing the above-mentioned flame-retardant polycarbonate composition comprises the following steps:

[0055] Premixing: in parts by mass, 100 parts of bisphenol A polycarbonate, 0.2 part of hindered phenolic antioxidant, 0.4 part of phosphite antioxidant, 0.3 part of pentaerythritol tetrastearate, SAN-coated polytetrafluoroethylene Put 0.3 parts of vinyl fluoride, 0.4 parts of potassium diphenyl sulfone sulfonate and 1.0 parts of organosiloxane flame retardant into a mixer and stir for 4 minutes to mix evenly to prepare a mixture;

[0056] Melt mixing: put the mixture into a special screw combination co-rotating twin-screw extruder with a length-to-diameter ratio of 40:1, and heat up each temperature zone to 270-280°C for melting to obtain a melt blend;

[0057] Cooling granulation: extru...

Embodiment 2

[0058] Embodiment 2: The flame retardant polycarbonate composition of this embodiment includes the following components in parts by mass: .

[0059]

[0060] The method for preparing the above-mentioned flame-retardant polycarbonate composition comprises the following steps:

[0061] Premixing: in parts by mass, 100 parts of bisphenol A polycarbonate, 0.2 part of hindered phenolic antioxidant, 0.4 part of phosphite antioxidant, 0.3 part of pentaerythritol tetrastearate, SAN-coated polytetrafluoroethylene Put 0.3 parts of vinyl fluoride, 0.48 parts of potassium diphenyl sulfone sulfonate and 0.92 parts of organosiloxane flame retardant into a mixer and stir for 4 minutes to mix evenly to prepare a mixture;

[0062] Melt mixing: put the mixture into a special screw combination co-rotating twin-screw extruder with a length-to-diameter ratio of 40:1, and heat up each temperature zone to 270-280°C for melting to obtain a melt blend;

[0063] Cooling granulation: extruding the m...

Embodiment 3

[0064] Embodiment 3: The flame-retardant polycarbonate composition of this embodiment includes the following components in parts by mass: .

[0065]

[0066] The method for preparing the above-mentioned flame-retardant polycarbonate composition comprises the following steps:

[0067] Premixing: in parts by mass, 100 parts of bisphenol A polycarbonate, 0.2 part of hindered phenolic antioxidant, 0.4 part of phosphite antioxidant, 0.3 part of pentaerythritol tetrastearate, SAN-coated polytetrafluoroethylene Put 0.3 part of vinyl fluoride, 0.5 part of potassium diphenylsulfone sulfonate and 0.9 part of organosiloxane flame retardant into a mixer and stir for 4 minutes to mix evenly to prepare a mixture;

[0068] Melt mixing: put the mixture into a special screw combination co-rotating twin-screw extruder with a length-to-diameter ratio of 40:1, and heat up each temperature zone to 270-280°C for melting to obtain a melt blend;

[0069] Cooling granulation: extruding the melted ...

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Abstract

The invention discloses a flame-retardant polycarbonate composition. The flame-retardant polycarbonate composition comprises the following components in part by mass: 100 parts of polycarbonate, 0.2-0.5 part of a hindered phenolic antioxidant, 0.2-1 part of a phosphite-type antioxidant, 0.2-0.4 part of polytetrafluoroethylene anti-dripping agent, 0.2-1.5 parts of an organic sulphonate flame retardant and 0.5-2.5 parts of an organosilicone flame retardant. By the synergistic flame-retardant effect of the organic sulphonate flame retardant and the organosilicone flame retardant which are compounded at a mass ratio of 2-3: 5 for use and optimizing the content of each component, the flame retardancy of polycarbonate is increased and the original mechanical property and heat resistance of polycarbonate are kept.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a flame-retardant polycarbonate composition and a preparation method thereof. Background technique [0002] Polycarbonate (Polycarbonate, PC) resin is known for its excellent impact resistance, dielectric properties, high heat resistance, high dimensional stability, high transparency, high flame retardancy, UV radiation resistance, coloring properties, FDA compliance The physical modification potential of performance, easy enhancement and chemical modification has rapidly formed a global commodity, and its production scale is also increasing. It has become the second largest engineering plastic after polyamide (PA), and is widely used in In the fields of electronics, electrical appliances, automobiles, aviation, aerospace, medical, construction, lighting, film, office, lens and entertainment, it provides new solutions for product design in many fields, and has import...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L27/18C08K5/00C08K5/42C08K5/103
CPCC08L69/00C08L2201/02C08L2205/03C08L83/10C08L27/18C08K5/42C08K5/103C08K5/5415
Inventor 杨永光曹艳霞赖华林秦勇
Owner SHENZHEN HALCYON NEW MATERIALS
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