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Halogen-free flame retardant high gloss polycarbonate (PC)/ acrylonitrile butadiene styrene (ABS) alloy and preparation method thereof

A high-gloss, ABS resin technology, applied in the field of polymer materials, can solve the problems of limiting the application range of PC/ABS resin, reducing the surface brightness of modified PC/ABS resin, and increasing the amount of addition, so as to improve the surface brightness and processing flow. properties, improved processing stability, and high heat resistance

Inactive Publication Date: 2013-02-13
东莞市松燊塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the flame retardants used to prepare flame-retardant PC / ABS resins are mainly brominated flame retardants. Adding such flame retardants requires a large amount to make the modified PC / ABS resin reach the V0 level of flame retardancy, resulting in The brightness of the modified PC / ABS resin surface drops sharply. Due to the limitation of the brightness of the PC / ABS resin surface, the application range of PC / ABS resin in some fields is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The weight average molecular weight is 30,000, the density is 1.1g / cm 3 PC resin with a density of 1.03g / cm 3 , ABS resin with a melting point of 180°C and a butadiene unit weight content of 15% and PMMA resin with a relative density of 1.19 and a refractive index of 1.482 were baked at 100°C for 1 hour, and 30Kg of the dried PC resin and ABS resin were weighed. Resin 30Kg, PMMA resin 5Kg, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 0.2Kg, modified ethylene bis fatty acid amide (TAF) 0.05Kg and EVA wax 0.05Kg, put into a high-speed mixer and dry mix for 5 minutes; put the mixed raw materials into a twin-screw extruder, melt extrude, granulate, bisphenol A-bis(diphenyl phosphate) 10Kg and diphenyl sulfone Sulfonate (KSS) 1Kg is added from the side feeding port, and the amount is controlled by the metering pump; the specific process is: the temperature of the first zone of the twin-screw extruder is 240°C, the temperature of the secon...

Embodiment 2

[0034] The weight average molecular weight is 40,000, the density is 1.2g / cm 3 PC resin with a density of 1.06g / cm 3 , ABS resin with a melting point of 185°C and a butadiene unit weight content of 20% and PMMA resin with a relative density of 1.20 and a refractive index of 1.503 were baked at 100°C for 2 hours, and 40Kg of the dried PC resin and ABS resin were weighed. 26Kg of resin, 6Kg of PMMA resin, 0.5Kg of tris(2,4-di-tert-butylphenyl) phosphite, 0.5Kg of modified ethylene bis fatty acid amide (TAF) and 0.5Kg of EVA wax, put them into a high-speed mixer Dry mixing for 6 minutes; Put the mixed raw materials into a twin-screw extruder for melt extrusion and granulation, bisphenol A-bis(diphenyl phosphate) 15 Kg and diphenyl sulfone sulfonate (KSS) 0.5Kg Added from the side feeding port, the amount added is controlled by the metering pump; the specific process is: the temperature of the first zone of the twin-screw extruder is 241°C, the temperature of the second zone is 2...

Embodiment 3

[0036] The weight average molecular weight is 50,000, the density is 1.3g / cm 3 PC resin with a density of 1.1g / cm 3, ABS resin with a melting point of 190°C and a butadiene unit weight content of 25% and PMMA resin with a relative density of 1.19 and a refractive index of 1.521 were baked at 100°C for 1 hour, and 50Kg of the dried PC resin and ABS resin were weighed. Resin 22Kg, PMMA resin 7Kg, 2-tert-butyl-6-(3-tert-butyl-5-methyl-2-hydroxyphenyl)-4-methylphenyl acrylate 0.7Kg, modified ethylene bis 0.25Kg of fatty acid amide (TAF) and 0.75Kg of EVA wax were put into a high-speed mixer and dry mixed for 7 minutes; the mixed raw materials were put into a twin-screw extruder, melted and extruded, granulated, bisphenol A-bis(diphenyl Base phosphate) 10Kg and diphenyl sulfone sulfonate (KSS) 0.5Kg are added from the side feeding port, and the amount added is controlled by the metering pump; the specific process is: the temperature of the first zone of the twin-screw extruder is ...

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Abstract

The invention belongs to the technical field of high molecular materials, and particularly relates to halogen-free flame retardant high gloss polycarbonate (PC) / acrylonitrile butadiene styrene (ABS) alloy and a preparation method thereof. The alloy comprises PC resin, ABS resin, polymethyl methacrylate (PMMA) resin, composition flame retardants, antioxidants and composite surface brighteners. The method for preparing the alloy includes the following steps: weighing, by weight, the PC resin, the ABS resin, the PMMA resin, the antioxidants and the composite surface brighteners; putting the PC resin, the ABS resin, the PMMA resin, the antioxidants and the composite surface brighteners in a high-speed mixer for dry-blending; throwing the polymer blends into a twin-screw extruder for melt extrusion and granulation, wherein the composition flame retardants are added from a side feed port and the addition is controlled by a metering pump; baking the produced particles to obtain the halogen-free flame retardant high gloss PC / ABC alloy. The obtained halogen-free flame retardant high gloss PC / ABC alloy is high in gloss, heat resisting and fluidity, simple in technology, low in cost, and capable of being suitable for the industrial areas of machinery, automobiles, electronics, instruments and apparatus, textile, constructions and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant high-gloss PC / ABS alloy and a preparation method thereof. Background technique [0002] PC / ABS is an alloy material of polycarbonate (PC) and styrene-butadiene-acrylonitrile copolymer (ABS). It not only has the impact resistance and excellent weather resistance of PC, but also has the high fluidity of ABS, so it can maintain its excellent physical properties and formability when applied to thin-walled and complex-shaped products. The main features of PC / ABS are: 1. Excellent UV resistance; 2. Good impact strength; 3. Excellent molding performance; 4. High temperature resistance (80~120°C); Therefore, PC / ABS is widely used in internal and external parts of automobiles, computers and peripheral equipment, communication equipment, home appliances, etc. When PC / ABS alloy is used in the manufacture of electronic components, the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L33/12C08K13/06C08K5/523C08K5/42B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 刘福军
Owner 东莞市松燊塑料科技有限公司
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