Low-smoke and zero-halogen inflaming retarding glass fiber reinforced polycarbonate composite material and preparation method thereof

A technology of polycarbonate and composite materials, applied in the field of polymer materials, can solve the problems of non-environmental protection, safety, processing difficulties, poor fluidity, etc., and achieve the effects of excellent impact toughness, good die fluidity, and good processing performance

Inactive Publication Date: 2011-02-02
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing glass fiber reinforced polycarbonate has poor fluidity, difficult processing, and is flame-retardant with halogenated flam...

Method used

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  • Low-smoke and zero-halogen inflaming retarding glass fiber reinforced polycarbonate composite material and preparation method thereof
  • Low-smoke and zero-halogen inflaming retarding glass fiber reinforced polycarbonate composite material and preparation method thereof
  • Low-smoke and zero-halogen inflaming retarding glass fiber reinforced polycarbonate composite material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0028] The preparation method of self-made silane coupling agent:

[0029] raw material:

[0030] 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] CH 2 =CHCH 2 Cl+CH 3 SiHCl 2 ——CH 3 (ClCH 2 CH 2 CH 2 ) SiCl 2 (Intermediate I)

[0037] (Intermediate II)

[0038]

[0039] 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.

[0040] Synthesis of Intermediate I: In a 250ml three-neck flask equipped with a thermometer, a constan...

Embodiment 1

[0044] Add 2% of high-efficiency halogen-free flame retardant, 2% of silane coupling agent, 1% of flame retardant and anti-dripping agent, 8% of toughening agent, 2% of lubricant and 2% of antioxidant into the high-speed batch mixer and stir for 5 Minutes, each component is weight percent. Then add the baked 71% PC, then stir together for 15 minutes, and set aside. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate, and add 12% glass fiber from the side feed. The section temperature is 240-260°C, the mold temperature is 60-100°C, the residence time is 1-2 minutes, and the pressure is 10-15MPa; the glass fiber is added from the side feeding port, the main screw speed is 400-500r / min, and the feeding speed is 40- 60r / min.

[0045] In this embodiment, the toughening agent is an MBS core-shell impact modifier or a silicon-modified acrylic impact modifier. Antioxidant is tetrakis [β-propionic acid]quaternary tetraethylene glycol ester or triphosphite....

Embodiment 2

[0048] Add 1% of high-efficiency halogen-free flame retardant, 3% of silane coupling agent, 0.5% of flame retardant and anti-dripping agent, 7% of toughening agent, 1.5% of lubricant and 1% of antioxidant into a high-speed batch mixer and stir for 5 Minutes, each component is weight percent. Then add the baked 78% PC, then stir together for 15 minutes, and set aside. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate, and add 8% glass fiber from the side feed. The section temperature is 240-260°C, the mold temperature is 60-100°C, the residence time is 1-2 minutes, and the pressure is 10-15MPa; the glass fiber is added from the side feeding port, the main screw speed is 400-500r / min, and the feeding speed is 40- 60r / min.

[0049] In this embodiment, the toughening agent is an MBS core-shell impact modifier or a silicon-modified acrylic impact modifier. Antioxidant is tetrakis [β-propionic acid]quaternary tetraethylene glycol ester or triphosphite...

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Abstract

The invention discloses a low-smoke and zero-halogen inflaming retarding glass fiber reinforced polycarbonate composite material and a preparation method thereof. The low-smoke and zero-halogen inflaming retarding glass fiber reinforced polycarbonate composite material comprises the following components of 70 to 85wt% of PC (Polycarbonate), 0.5 to 2wt% of high-efficiency zero-halogen inflaming retardant, 5 to 12wt% of glass fiber and 5 to 16wt% of auxiliary. The low-smoke and zero-halogen inflaming retarding glass fiber reinforced polycarbonate composite material of the invention has the advantages of good mold filling fluidity, excellent processing performance, strong bending resistance performance, high toughness, good dimensional stability, high surface glossiness, good application prospects on the aspect of liquid crystal display television die set products.

Description

[technical field] [0001] The invention relates to polymer materials, in particular to an environment-friendly low-smoke, halogen-free, flame-retardant glass fiber-reinforced polycarbonate composite material and a preparation method thereof. [Background technique] [0002] With the development of science and technology, the replacement of electronic and electrical products is very rapid. The display has undergone three generations of technology updates from CRT, plasma to liquid crystal. LCD TV display module materials are very important for the proper assembly of LCD TVs, and are generally made of glass fiber reinforced polycarbonate. However, the existing glass fiber reinforced polycarbonate has poor fluidity, difficult processing, and is flame-retardant with halogenated flame retardants, which has non-environmental safety hazards, and the module material parts made of it are resistant to bending The ability is not strong, and it is easy to become brittle. [Content of t...

Claims

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Application Information

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IPC IPC(8): C08K7/14B29B9/06C08K13/04C08K5/42C08L69/00
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL
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