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PC/ABS alloy and preparation method thereof

A technology of alloy and flame retardant synergist, which is applied in the field of PC/ABS alloy and its preparation, can solve the problems of limited development of halogen-based flame retardants, large amount of smoke, toxic gases, etc., and achieve excellent matt effect, resistance to The effect of good flammability and excellent processing performance

Active Publication Date: 2010-07-28
徐东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, halogenated flame retardants tend to emit toxic gases at high temperatures, and have a large amount of smoke
With the improvement of flame retardant requirements and the enhancement of environmental protection awareness, the defect of halogenated flame retardants seriously limits its further development.

Method used

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  • PC/ABS alloy and preparation method thereof
  • PC/ABS alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add 10% of halogen-free flame retardant, 1% of flame retardant and anti-dripping agent, 5% of toughening agent, 1% of compatibilizer, 1% of low gloss treatment agent, and 1% of antioxidant into the high-speed batch mixer, and then Drop 3% of the melted halogen-free flame retardant synergist into the blender and stir for 5 minutes, and all the above components are in mass percentage. Then add the baked 60% PC and 18% ABS, and then stir together for 5 minutes for later use. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are as follows: twin-screw first stage temperature 220-230°C, second-stage temperature 230-240°C, third-stage temperature 240-250°C, mold temperature 60 ~100℃, residence time 1~2 minutes, pressure 10~15MPa.

[0055] In this embodiment, the toughening agent is a core-shell type ABS impact modifier with a rubber content of 60-80%. The compatibilizer is ABS grafted malanic anhydride with a graft rate o...

Embodiment 2

[0057] Example 2: Add 12% of halogen-free flame retardant, 0.1% of flame retardant and anti-dripping agent, 7.9% of toughening agent, 1% of compatibilizer, 2% of low gloss treatment agent, and 2% of antioxidant into high-speed batching In the blender, then drop 1% of the melted halogen-free flame retardant synergist into the blender, and stir for 5 minutes, and each of the above components is in mass percentage. Then add baked 62% PC and 12% ABS, then stir together for 7 minutes, and set aside. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are as follows: twin-screw first stage temperature 220-230°C, second-stage temperature 230-240°C, third-stage temperature 240-250°C, mold temperature 60 ~100℃, residence time 1~2 minutes, pressure 10~15MPa.

[0058] In this embodiment, the toughening agent is a core-shell type ABS impact modifier with a rubber content of 60-80%. The compatibilizer is ABS grafted malanic anhydride wit...

Embodiment 3

[0060] Example 3: Add 7% of halogen-free flame retardant, 0.5% of flame retardant and anti-dripping agent, 3% of toughening agent, 3% of compatibilizer, 3% of low gloss treatment agent, and 1% of antioxidant into high-speed batching In the blender, then drop 3% of the melted halogen-free flame retardant synergist into the blender, and stir for 5 minutes, and each of the above components is in mass percentage. Then add baked 67% PC and 12% ABS, then stir together for 8 minutes, and set aside. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are as follows: twin-screw first stage temperature 220-230°C, second-stage temperature 230-240°C, third-stage temperature 240-250°C, mold temperature 60 ~100℃, residence time 1~2 minutes, pressure 10~15MPa.

[0061] In this embodiment, the toughening agent is a core-shell type ABS impact modifier with a rubber content of 60-80%. The compatibilizer is ABS grafted malanic anhydride with a...

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Abstract

The invention relates to a PC / ABS alloy and a preparation method thereof.The method comprises the following steps: S1. adding non-halogen flame-retardant agent, inflaming retarding and anti-drippage agent into a high-speed burdening agitator, then dropwise adding melted non-halogen flame-retardant synergist into the agitator and agitating for a first time; S2. adding dried PC and ABS and agitating for a second time for standby use; S3. placing the agitated mixture in a double-screw machine for melt extrusion for pelleting.The prepared PC / ABS alloy comprises the following raw materials according to parts by weight: 60-68 parts of PC, 12-18 parts of ABS, 7-12 parts of non-halogen flame-retardant agent, 1-3 parts of non-halogen flame-retardant synergist, 0.1-1 part of inflaming retarding and anti-drippage agent and 6-20 parts of auxiliary.The PC / ABS alloy features good inflaming retarding effect and good comprehensive property and is halogen-free and environment-friendly; in addition, the alloy features fine suboptical effect and can be applied to components such as automobile upholsteries in need of suboptical effect and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PC / ABS alloy and a preparation method thereof. Background technique [0002] Polycarbonate (PC for short) is an amorphous thermoplastic engineering plastic with excellent performance. It has outstanding impact resistance, good creep resistance and dimensional stability, good heat resistance, low water absorption, non-toxicity and Excellent dielectric properties, is the fastest growing general engineering plastics in recent years. At present, it is widely used in automobiles, electronics, construction, office equipment, packaging, sports equipment, medical care and other fields. With the continuous deepening of modification research, it is rapidly expanding to high-tech fields such as aerospace, computers, and optical discs. However, unmodified polycarbonate still has deficiencies, which are manifested in insufficient processing fluidity and poor chemical resistance. ...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08K5/521C08K5/523C08L25/06C08L27/18B29B9/06B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92514B29C2948/92561B29C2948/92895
Inventor 何杰
Owner 徐东
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