Halogen-free flame-retardant polycarbonate/styrene base resin composition and preparation method thereof

A technology of styrene-based resin and flame retardant polycarbonate, which is applied in the field of polymer composition and its preparation, can solve the problems of high GWIT requirements, inability to achieve, application limitations of electronic and electrical components, etc.

Active Publication Date: 2011-06-29
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, in terms of plastic parts used in some electrical products, customers have higher requirements on the electrical insulation and flame retardancy of materials, and the electrical insulation and flame retardancy of materials are mainly evaluated by CTI value and GWIT value, while Ordinary halogen-free flame retardant PC / ABS still cannot achieve a balance between CTI value and GWIT value, especially the higher GWIT requirement, so the application in some electronic and electrical components is limited

Method used

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  • Halogen-free flame-retardant polycarbonate/styrene base resin composition and preparation method thereof
  • Halogen-free flame-retardant polycarbonate/styrene base resin composition and preparation method thereof

Examples

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Embodiment 1-2

[0039] A preparation method of a halogen-free flame-retardant polycarbonate / styrene-based resin composition, the method comprising the following steps:

[0040] (1) The following raw materials are used: PC: produced by Bayer Company of Germany, grade 2805; ABS: produced by Taiwan Chimei Company, grade 757K; methyl methacrylate-styrene-butadiene copolymer (MBS); BDP: Zhejiang Wansheng Bisphenol A bis(diphenyl phosphate) produced by chemical industry; magnesium hydroxide; silicone resin; melamine as flame retardant; antioxidant 1076; antioxidant 168; silicone oil is used as lubricant. The content of each component is shown in Table 1.

[0041] (2) Put polycarbonate as the base material, styrene-based resin, toughening agent compatibilizer, metal inorganic matter, silicone, antioxidant and other additives in a high mixer and mix for 2-3 minutes to obtain a mixture Then, the mixed material is introduced into a twin-screw extruder, the temperature is controlled at 230-250°C, the c...

Embodiment 3

[0053] A preparation method of a halogen-free flame-retardant polycarbonate / styrene-based resin composition, the method comprising the following steps:

[0054] (1) Prepare raw materials according to the following components and contents: 65kg bisphenol A polycarbonate, 25kg styrene-based resin, 2kg toughening compatibilizer, 1kg iron oxide, 5kg organic silicon, 7kg compound flame retardant, 0.1 kg antioxidant 1076, 1.5kg antioxidant 168. Among them, the styrene-based resin is a copolymer of styrene and vinyl monomer; the toughening compatibilizer is methyl methacrylate-styrene-butadiene copolymer; the silicone is dimethyl silicone oil; the compound flame retardant The agent is a compound of monophosphate ester and dicyandiamide in a weight ratio of 3:4.

[0055] (2) Put bisphenol A polycarbonate, styrene-based resin, toughener compatibilizer, iron oxide, organic silicon, antioxidant 1076 and antioxidant 168 in a high mixer and mix for 2 minutes to obtain a mixture Then, the...

Embodiment 4

[0057] A preparation method of a halogen-free flame-retardant polycarbonate / styrene-based resin composition, the method comprising the following steps:

[0058](1) Prepare raw materials according to the following components and contents: 90kg bisphenol A polycarbonate, 0.01kg styrene-based resin, 10kg toughening compatibilizer, 4kg zinc borate, 6kg zinc oxide, 0.5kg silicone, 15kg compound With flame retardant, 1kg antioxidant 1076, 0.1kg antioxidant 168, 1.5kg lubricant fatty acid amide, 0.5kg ultramarine blue toner. Wherein the styrene-based resin is a copolymer of styrene derivatives and vinyl monomers; the toughening compatibilizer is styrene-maleic anhydride copolymer (SMA) and ethylene-octene copolymer grafted maleic anhydride by weight The ratio is a mixture of 1:4; the silicone is ultra-high molecular weight linear polydimethylsiloxane; the compound flame retardant is bisphenol A bis(diphenyl phosphate) and bisphosphonate in a weight ratio of 2 : Compounding of 1.

...

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Abstract

The invention relates to a halogen-free flame-retardant polycarbonate/styrene base resin composition and a preparation method thereof, and the composition comprises the following components in parts by weight: 650-900 parts of polycarbonate, 0.1-250 parts of styrene base resin, 20-100 parts of toughening compatibilizer, 10-100 parts of metal inorganic compound, 5-50 parts of organic silicon, 70-150 parts of complex flame retardant, 1-10 parts of antioxidant A, 1-15 parts of antioxidant B and 0-20 parts of other auxiliary materials. The preparation method comprises the following steps: mixing raw materials in a high-speed mixing machine, then introducing into a twin-screw extruder, adding the complex flame retardant in the lateral line feeding way, performing extrusion and granulation and finally getting the product. Compared with the prior art, the halogen-free flame-retardant polycarbonate/styrene base resin composition has the advantages of high comparative tracking index (CTI), high glow-wire ignition temperature (GWIT), halogen-free flame retardance, environment friendliness and the like.

Description

technical field [0001] The invention relates to a polymer composition and a preparation method thereof, in particular to a halogen-free flame-retardant polycarbonate / styrene-based resin composition and a preparation method thereof. Background technique [0002] Polycarbonate resin and styrene-based composite resin have the advantages of good heat resistance, high impact resistance and excellent processability, so they are widely used in the fields of auto parts, home appliances, electronic appliances and the like. Due to the requirements for flame retardant materials and non-halogenated flame retardant systems, the brominated flame retardant PC / ABS alloy system has been subject to more and more restrictions. [0003] On the contrary, phosphorus-based flame retardants are mainly used in the halogen-free flame-retardant PC / ABS alloy system. Due to the good appearance and better processing performance, halogen-free PC / ABS flame-retardant products have received more and more att...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L25/14C08L25/10C08L51/04C08K13/02C08K5/523C08K3/22C08K5/3492C08K5/521C08K5/315C08K3/38B29B9/06
Inventor 郑浩
Owner HEFEI GENIUS NEW MATERIALS
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