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Environmentally-friendly halogen-free PC/ABS alloy and preparation method thereof

An environmentally friendly and alloy technology, applied in the field of polymer materials, to achieve the effect of good application prospects, excellent processing performance, high flexural strength and flexural modulus

Inactive Publication Date: 2010-11-03
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a halogen-free environmentally friendly PC / ABS alloy with good bending resistance and no surface warping deformation when the surface is decorated with IMD technology and its preparation method

Method used

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  • Environmentally-friendly halogen-free PC/ABS alloy and preparation method thereof
  • Environmentally-friendly halogen-free PC/ABS alloy and preparation method thereof

Examples

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preparation example Construction

[0029] The preparation method of self-made silane coupling agent:

[0030] Raw material: Methyldichlorosilane: purity 98.2%, Xinghuo Chemical Plant

[0031] Propyl chloride: purity 98.5%, Hunan Yueyang Chemical

[0032] Anhydrous methanol, analytically pure, Beijing Chemical Plant

[0033] Ethylenediamine: analytically pure, Shenyang Xinxing Reagent Factory

[0034] Chloroplatinic acid: chemically pure, Shenyang Keda Reagent Factory

[0035] Composite path:

[0036]

[0037] Basic method: Using methyl dichlorosilane and allyl chloride as raw materials and chloroplatinic acid as a catalyst, an intermediate I was synthesized: methyl (γ-chloropropyl) dichlorosilane, which was combined with Ethylenediamine reacts to give the product.

[0038] Synthesis of Intermediate I: In a 250ml three-neck flask equipped with a thermometer, a constant pressure dropping funnel, and a reflux condenser, add 0.2mol of allyl chloride and chloroplatinic acid solution, and stir electromagnetic...

Embodiment 1

[0042] Add 0.8% of silane coupling agent and 12% of 2000 mesh talc powder into a high-speed batch mixer for pre-mixing for 3 minutes, then add 7% of halogen-free flame retardant, 0.1% of flame retardant and anti-dripping agent, 8% of toughening agent, 3% of the compatibilizer and 0.1% of the antioxidant were added together into a high-speed batch mixer and stirred for 5 minutes, and each component was in weight percentage. Then add the baked 60% PC and 9% 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.

[0043] In this embodiment, the toughening agent is a core-shell ABS impact modifier with a rubber content of 60-80%. The compatibilizer is ABS grafted malanic a...

Embodiment 2

[0046] Add 0.6% of silane coupling agent and 6% of 2000 mesh calcium carbonate to a high-speed batch mixer for pre-mixing for 3 minutes, then add 12% of halogen-free flame retardant, 0.2% of flame retardant and anti-dripping agent, 5% of toughening agent, Add 1% of compatibilizer and 0.2% of antioxidant together into a high-speed batching mixer and stir for 5 minutes, and each component is in weight percentage. Then add the baked 64% PC and 11% 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.

[0047]In this embodiment, the toughening agent is a core-shell ABS impact modifier with a rubber content of 60-80%. The compatibilizer is ABS grafted malanic anhydride wit...

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Abstract

The invention discloses an environmentally-friendly halogen-free polycarbonate / acrylonitrile butadiene styrene (PC / ABS) alloy and a preparation method thereof. The environmentally-friendly halogen-free PC / ABS alloy consists of the following components in percentage by weight: 60 to 68 percent of PC, 6 to 14 percent of ABS, 7 to 12 percent of halogen-free flame retardant, 5 to 12 percent of inorganic filler and 4 to 16 percent of auxiliary agent. The environmentally-friendly halogen-free PC / ABS alloy has the advantages of high fill fluidity, processability, high bending strength and bending modulus, little surface warpage and deformation when an in-mold decoration (IMD) process is used for decorating the surface and good application prospect in high-end laptop computer casings, automotive instrument panels and electrical appliance shells.

Description

[technical field] [0001] The invention relates to polymer materials, in particular to a halogen-free environment-friendly PC / ABS alloy and a preparation method thereof. [Background technique] [0002] In-Mold Decoration (IMD), referred to as IMD technology, is currently an internationally popular surface decoration technology. The surface is hardened and transparent film, the middle printing pattern layer, and the back injection layer can prevent the surface of the product from being scratched and damaged. It is resistant to friction, and can keep the bright color for a long time and is not easy to fade. IMD technology can replace many traditional manufacturing processes, such as thermal transfer, spraying, printing, electroplating and other appearance decoration methods. Especially in related products that require a variety of color images, backlights, etc. to be well applied. [0003] However, not all surface decorations of plastic materials can adopt the IMD process, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/00C08K13/06C08K9/06C08K3/26C08K3/34C08K3/30B29C47/92B29C48/92
CPCB29C48/04B29C48/875B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704B29C2948/92895
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL
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