Halogen-free flame retardant antistatic PC/ABS alloy material and preparation method thereof

Abstract

The invention discloses a halogen-free flame retardant antistatic PC / ABS (Poly Carbonate / Acrylonitrile Butadiene Styrene) alloy material and a preparation method thereof, belonging to the technical field of alloy materials. The halogen-free flame retardant antistatic PC / ABS alloy material provided by the invention comprises the following components in parts by weight: 1-30 parts of ABS resin, 40-90 parts of PC resin, 8-20 parts of fire retardant, 1-10 parts of flexibilizer, 0.02-0.5 part of antistatic agent, 0.1-1 part of photo-thermal stabilizing agent and 0.1-1 part of processing agent. The invention also discloses a preparation method of the halogen-free flame retardant antistatic PC / ABS alloy material, which comprises the following steps of: mixing the 1-30 parts of ABS resin, the 40-90 parts of PC resin, the 8-20 parts of fire retardant, the 1-10 parts of flexibilizer, the 0.02-0.5 part of antistatic agent, the 0.1-1 part of photo-thermal stabilizing agent and the 0.1-1 part of processing agent, and then sending to a dual-screw extruder, mixing, extruding, staying, cooling, sized-dicing and obtaining a finished product of the halogen-free flame retardant antistatic PC / ABS alloy material. The halogen-free flame retardant antistatic PC / ABS alloy material provided by the invention has the advantages of simple process, continuity, high production efficiency and stable quality.

Description

technical field

[0001] The invention belongs to the technical field of alloy materials, and in particular relates to a halogen-free flame-retardant antistatic PC / ABS alloy material and a preparation method thereof. Background technique

[0002] PC / ABS (a blend of polycarbonate and acrylonitrile-butadiene-styrene copolymer) resin is an alloy material with excellent performance, with excellent physical and mechanical properties, surface hardness, high strength and flow And it has certain heat resistance, but its disadvantage is poor flame retardancy and high electrical insulation, so at present, various modifiers are added to PC / ABS alloy to improve its performance. Halogenated flame retardants have a good cost-effectiveness balance and are widely applicable. However, due to the large amount of smoke generated, the released gas is highly corrosive, and brominated flame retardants decompose into polybrominated dibenzos under certain conditions. Dioxane and polybrominated diben...

Examples

Embodiment 1

[0041] With 1 part of ABS Daqing 750, 90 parts of PCIR2200, 8 parts of flame retardant BDP, 0.02 part of antistatic agent multi-walled carbon nanotubes, 1 part of MBS toughening agent, 0.3 part of light and heat stabilizer (1076:168=1: 2) and 0.8 parts of processing aids (0.5 parts of EBS and 0.3 parts of PTFE-A3800), mixed evenly by high-speed stirring, and the above mixture was sent into a twin-screw extruder, and fully melted under the conveying and shearing action of the screw , composite, and then extruded through the machine head, drawn, cooled, pelletized, and finally packed.

[0042] The screw temperature of each section of the twin-screw extruder is controlled between 230-250°C, and the screw speed is 400 rpm.

[0043] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

Embodiment 2

[0045] With 10 parts of ABS Daqing 750, 74 parts of PCIR2200, 13 parts of flame retardant BDP, 0.1 part of antistatic agent multi-walled carbon nanotubes, 3 parts of MBS toughening agent, 0.3 part of light and heat stabilizer (1076:168=1: 2) and 0.8 parts of processing aids (0.5 parts of EBS and 0.3 parts of PTFE-A3800), mixed evenly by high-speed stirring, and the above mixture was sent into a twin-screw extruder, and fully melted under the conveying and shearing action of the screw , composite, and then extruded through the machine head, drawn, cooled, pelletized, and finally packed.

[0046] The screw temperature of each section of the twin-screw extruder is controlled between 230-250°C, and the screw speed is 400 rpm.

[0047] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

Embodiment 3

[0049]With 15 parts of ABS Daqing 750, 65 parts of PCIR2200, 15 parts of flame retardant BDP, 0.3 part of antistatic agent multi-walled carbon nanotubes, 5 parts of MBS class toughening agent, 0.3 part of light and heat stabilizer (1076:168=1: 2) and 0.8 parts of processing aids (0.5 parts of EBS and 0.3 parts of PTFE-A3800), mixed evenly by high-speed stirring, and the above mixture was sent into a twin-screw extruder, and fully melted under the conveying and shearing action of the screw , composite, and then extruded through the machine head, drawn, cooled, pelletized, and finally packed.

[0050] The screw temperature of each section of the twin-screw extruder is controlled between 230-250°C, and the screw speed is 400 rpm.

[0051] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

technical field

[0001] The invention belongs to the technical field of alloy materials, and in particular relates to a halogen-free flame-retardant antistatic PC / ABS alloy material and a preparation method thereof. Background technique

[0002] PC / ABS (a blend of polycarbonate and acrylonitrile-butadiene-styrene copolymer) resin is an alloy material with excellent performance, with excellent physical and mechanical properties, surface hardness, high strength and flow And it has certain heat resistance, but its disadvantage is poor flame retardancy and high electrical insulation, so at present, various modifiers are added to PC / ABS alloy to improve its performance. Halogenated flame retardants have a good cost-effectiveness balance and are widely applicable. However, due to the large amount of smoke generated, the released gas is highly corrosive, and brominated flame retardants decompose into polybrominated dibenzos under certain conditions. Dioxane and polybrominated diben...

Examples

Embodiment 1

[0041] With 1 part of ABS Daqing 750, 90 parts of PCIR2200, 8 parts of flame retardant BDP, 0.02 part of antistatic agent multi-walled carbon nanotubes, 1 part of MBS toughening agent, 0.3 part of light and heat stabilizer (1076:168=1: 2) and 0.8 parts of processing aids (0.5 parts of EBS and 0.3 parts of PTFE-A3800), mixed evenly by high-speed stirring, and the above mixture was sent into a twin-screw extruder, and fully melted under the conveying and shearing action of the screw , composite, and then extruded through the machine head, drawn, cooled, pelletized, and finally packed.

[0042] The screw temperature of each section of the twin-screw extruder is controlled between 230-250°C, and the screw speed is 400 rpm.

[0043] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

Embodiment 2

[0045] With 10 parts of ABS Daqing 750, 74 parts of PCIR2200, 13 parts of flame retardant BDP, 0.1 part of antistatic agent multi-walled carbon nanotubes, 3 parts of MBS toughening agent, 0.3 part of light and heat stabilizer (1076:168=1: 2) and 0.8 parts of processing aids (0.5 parts of EBS and 0.3 parts of PTFE-A3800), mixed evenly by high-speed stirring, and the above mixture was sent into a twin-screw extruder, and fully melted under the conveying and shearing action of the screw , composite, and then extruded through the machine head, drawn, cooled, pelletized, and finally packed.

[0046] The screw temperature of each section of the twin-screw extruder is controlled between 230-250°C, and the screw speed is 400 rpm.

[0047] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.

Embodiment 3

[0049]With 15 parts of ABS Daqing 750, 65 parts of PCIR2200, 15 parts of flame retardant BDP, 0.3 part of antistatic agent multi-walled carbon nanotubes, 5 parts of MBS class toughening agent, 0.3 part of light and heat stabilizer (1076:168=1: 2) and 0.8 parts of processing aids (0.5 parts of EBS and 0.3 parts of PTFE-A3800), mixed evenly by high-speed stirring, and the above mixture was sent into a twin-screw extruder, and fully melted under the conveying and shearing action of the screw , composite, and then extruded through the machine head, drawn, cooled, pelletized, and finally packed.

[0050] The screw temperature of each section of the twin-screw extruder is controlled between 230-250°C, and the screw speed is 400 rpm.

[0051] The prepared compound was injection-molded into a standard sample bar for testing according to the standard size, and the performance test results are shown in Table 2.