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Low-smoke halogen-free flame retardant PC/ABS alloy and preparation method thereof

A low-smoke, alloy technology, applied in the field of material alloys, can solve the problems of unfriendly environment, large amount of addition, large amount of smoke, etc., and achieve the effects of excellent mechanical properties, good flame retardancy, and low amount of smoke

Inactive Publication Date: 2009-12-02
SHANGHAI KELING INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, people usually use halogenated flame retardants (such as CN200610034295.X; CN200610033112.2; CN200610122383.5, etc.), phosphoric acid ester flame retardants (such as CN00814695.0; CN98808107.5, etc.) and alkylbenzenesulfonic acid alkali metal salts or alkaline earth metal salt flame retardants (CN 01820975.0), etc. Among them, halogen flame retardants have good effects, but are not friendly to the environment, and have been gradually replaced by halogen-free flame retardants, and other halogen-free flame retardants Some flame retardants are added in a large amount, which has adverse effects on performance. Although some flame retardants have good flame retardant effects, they emit a large amount of smoke when burned, which will still cause a great threat to human life safety and the living environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A low-smoke flame-retardant PC / ABS alloy and a preparation method thereof, the alloy formula of which is shown in Table 1:

[0025] Table 1

[0026] Raw material components

Proportion (weight%)

PC

68

ABS

10

Maleic anhydride grafted ABS

5

Phosphate Flame Retardant

8

borate

3

Hydroxyl imine hydrochloride

0.2

dicyclopentadienyl iron

0.8

Nano-TiO 2

4

N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine

0.4

stearic acid

0.6

[0027] Its preparation method is as follows: put all the raw material components into the high mixer according to the above ratio and mix for 3 minutes at 1200 rev / min, then extrude and granulate with a screw extruder, the screw revolution is set at 120 rev / min, the screw The medium melt temperature is 270°C.

[0028] A low-smoke, flame-retardant PC / ABS alloy with excellent comprehensive pr...

Embodiment 2

[0032] A low-smoke flame-retardant PC / ABS alloy and a preparation method thereof, the alloy comprises the following components and weight percentages:

[0033] Bisphenol A type homopoly PC with a molecular weight of 10000: 75%,

[0034] ABS with a rubber content of 20% by weight: 10%,

[0035] Nitrogen flame retardant: 8%,

[0036] Red phosphorus masterbatch: 2%

[0037] Ferrocene: 0.2%,

[0038] Organosiloxane: 0.3%

[0039] Maleic anhydride grafted polypropylene: 2.5%,

[0040] Lanthanum oxide: 1.2%,

[0041] Tris(2,4-di-tert-butylphenyl)phosphite: 0.5%,

[0042] White oil: 0.3%.

[0043] The preparation method comprises: weighing the raw materials according to the above ratio, putting them into a high-mixer and mixing them for 2 minutes, putting them into a twin-screw extruder to extrude and granulate after discharging, and the speed of the screw extruder is 300 rpm, The melting temperature of the screw is 300°C.

Embodiment 3

[0045] A low-smoke flame-retardant PC / ABS alloy and a preparation method thereof, the alloy comprises the following components and weight percentages:

[0046] Bisphenol A type homopoly PC with a molecular weight of 100000: 40%,

[0047] Rubber content: 50% Acrylonitrile-butadiene-styrene copolymer: 35%,

[0048] Powdered red phosphorus: 2%,

[0049] Silicone flame retardant: 13%,

[0050] Maleimide: 1.5%,

[0051] Arylimine: 0.5%,

[0052] Ethylene-acrylic acid copolymer: 16%,

[0053] Nano Zinc Oxide: 1%,

[0054] 2,6-di-tert-butyl-4-methylphenol or dilauryl thiodipropionate: 0.5%,

[0055] Ethylene bis fatty acid amide: 0.5%.

[0056] The preparation method comprises: weighing the raw materials according to the above ratio, putting them into a high-mixer and mixing them for 15 minutes, putting them into a twin-screw extruder to extrude and granulate after discharging, and the speed of the screw extruder is 600 rpm, The melting temperature of the screw is 320°C.

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Abstract

The invention relates to a low-smoke halogen-free flame retardant PC / ABS alloy and a preparation method thereof. 40-75 polycarbonate (PC), 10-40 acrylonitrile-butadiene-styrol copolymer (ABS), 10-15 compound flame retardant, 0.2-2 compound smoke suppression agent, 2-16 compatilizer, 1-6 low-smoke promoter, 0.1-0.5 stabilizer and 0.1-0.6 lubricant are taken in percentage by weight and are put in a high-speed mixer for mixing for 1-15min, and then the mixture is put in a screw extruder for extrusion granulation. Compared with the prior art, the invention has the advantages of low smoke, halogen-free flaming retardation, excellent comprehensive performance, and the like.

Description

technical field [0001] The invention relates to the technical field of material alloys, in particular to a low-smoke, halogen-free, flame-retardant PC / ABS alloy and a preparation method thereof. Background technique [0002] Polycarbonate (PC) / acrylonitrile-butadiene-styrene copolymer (ABS) alloy is a plastic alloy with excellent comprehensive properties. It has both the excellent mechanical and thermal properties of PC and the good formability of ABS. It is characterized by good stress cracking resistance and is widely used in automobiles, home appliances, communication equipment and other fields. The flame retardancy of materials plays an important role in the safety of people's lives, but when a fire occurs, the amount of smoke generated by plastic materials is also an important factor that endangers people's lives. At present, people usually use halogenated flame retardants (such as CN200610034295.X; CN200610033112.2; CN200610122383.5, etc.), phosphoric acid ester flame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/541B29C47/00B29B9/12C08L55/02C08L23/08C08L51/06C08K3/38C08K5/524C08K5/09C08K5/17C08K5/25
Inventor 沈曦徐玉军
Owner SHANGHAI KELING INDS
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