Super-black and high-gross polycarbonate composite material and preparation method

A technology of polycarbonate and composite materials, which is applied in the field of ultra-black bright high-gloss polycarbonate composite materials and its preparation, and can solve problems such as pitting, matt, dispersion of fillers and carbon black powder, and processing difficulties , to achieve the effect of simple process, good mechanical properties and convenient preparation method

Inactive Publication Date: 2012-10-31
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although PC has many excellent properties, due to the high rigidity and large steric hindrance of the PC molecular chain, it has a high melt viscosity, so it is difficult to process, and it is difficult to separate fillers and carbon black powders during modification. Scattered, and prone to pitting, matte and other phenomena

Method used

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  • Super-black and high-gross polycarbonate composite material and preparation method
  • Super-black and high-gross polycarbonate composite material and preparation method
  • Super-black and high-gross polycarbonate composite material and preparation method

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preparation example Construction

[0023] see figure 1 , showing a method for preparing an ultra-black and high-gloss polycarbonate composite material according to an embodiment of the present invention, which includes the following steps:

[0024] S01: Weigh each component according to the formula of the above-mentioned ultra-black bright high-gloss polycarbonate composite material;

[0025] S02: adding a wetting agent to the polycarbonate for mixing, and then adding carbon black and a dispersant to obtain a mixed material;

[0026] S03: Melt-extrude the mixed material and pelletize to obtain the ultra-black bright high-gloss polycarbonate composite material.

[0027] Specifically, in step S01, all materials are weighed accurately, accurate to 0.001 kilogram. The preferred content and type of each component in the high-ultra-black and high-gloss polycarbonate composite material formulation are as above, and will not be repeated here to save space.

[0028] Step S02 is as follows: put the polycarbonate in a ...

Embodiment 1

[0033] Components and weight percentages thereof of the ultra-black bright high-gloss polycarbonate composite material of the present embodiment are:

[0034]

[0035] Weigh all materials accurately to the nearest 0.001 kg. Dry the polycarbonate in a blast dryer at 110°C for 3 hours, then add a wetting agent, mix at a medium speed for 5 minutes, add carbon black and a dispersant, and mix at a high speed for 10 minutes until the mixture is uniform . Put the mixed material into the feeding hopper of the twin-screw extruder, melt and extrude, and granulate; among them, the process parameters are: the temperature of the first zone is 160°C, the temperature of the second zone is 180°C, the temperature of the third zone is 240°C, and the temperature of the fourth zone is 240°C. Zone temperature 240°C, zone 5 temperature 230°C, zone 6 temperature 230°C, zone 7 temperature 230°C, zone 8 temperature 230°C, die head temperature 250°C, material residence time 2min, pressure 10Mpa, sc...

Embodiment 2

[0037] Components and weight percentages thereof of the ultra-black bright high-gloss polycarbonate composite material of the present embodiment are:

[0038]

[0039] Weigh all materials accurately to the nearest 0.001 kg. Dry the polycarbonate in a blast dryer at 130°C for 5 hours, then add a wetting agent, mix at a medium speed for 8 minutes, add carbon black and a dispersant, and mix at a high speed for 15 minutes until the mixture is uniform . Put the mixed material into the feeding hopper of the twin-screw extruder, melt and extrude, and granulate; among them, the process parameters are: the temperature of the first zone is 180°C, the temperature of the second zone is 200°C, the temperature of the third zone is 260°C, and the temperature of the fourth zone is 260°C. Zone temperature 260°C, zone 5 temperature 250°C, zone 6 temperature 250°C, zone 7 temperature 250°C, zone 8 temperature 240°C, die head temperature 260°C, material residence time 3min, pressure 20Mpa, sc...

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Abstract

The invention provides a super-black and high-gross polycarbonate composite material. The super-black and high-gross polycarbonate composite material comprises the following components in percentage by weight: 98.1-98.8% of polycarbonate, 0.3-0.5% of dispersing agent, 0.2-0.4% of wetting agent and 0.7-1% of carbon black. The invention further provides a preparation method of the super-black and high-gross polycarbonate composite material. The super-black and high-gross polycarbonate composite material provided by the invention has the advantages of super-black appearance and high gross and is mainly used for appearance pieces, such as spraying-free and super-black household electrical appliances and so on; and the preparation method provided by the invention has the advantages of simple process, convenience in operation, high benefits and low cost and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an ultra-black bright high-gloss polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (referred to as PC) is a class of polymers containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. At present, only aromatic polycarbonate has been industrialized. [0003] PC is a thermoplastic engineering plastic with excellent performance. It has outstanding impact resistance, high gloss, good creep resistance and dimensional stability, heat resistance, low water absorption, non-toxicity, and excellent dielectric properties. It is one of the five major engineering plastics. It is the only product with good transparency, and it is also the fastest-growing general-purpose engineering plastic i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L53/00C08K3/04B29B9/06
Inventor 徐东徐永付天英
Owner SHENZHEN KEJU NEW MATERIAL
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