Conductive engineering plastics and preparation method thereof

A technology of engineering plastics and acicular wollastonite, which is applied in the field of conductive engineering plastics and its preparation, can solve the problems of large amount of conductive filler added and dust falling, and achieve the effects of dimensional stability, small warpage and excellent static dissipative ability.

Active Publication Date: 2009-12-23
惠州市沃特新材料有限公司
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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a conductive engineering plastic, which aims to

Method used

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  • Conductive engineering plastics and preparation method thereof
  • Conductive engineering plastics and preparation method thereof
  • Conductive engineering plastics and preparation method thereof

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preparation example Construction

[0042] The embodiment of the present invention also provides a preparation method of the above-mentioned conductive engineering plastics, comprising the following steps:

[0043] (1) Proportioning raw materials according to the above-mentioned ratio, mixing each component except acicular wollastonite and carbon nanotubes evenly, and then adding them to the main feeding port of the twin-screw extruder;

[0044] (2) After mixing the acicular wollastonite and carbon nanotubes, add them to the side feeding port;

[0045] (3) Extrude, cool, dry, and pelletize after fully kneading the polymer resin in a molten state to form a composite plastic.

[0046] The melt extrusion temperature in the above step (1) is 260-310°C.

Embodiment 1

[0048] According to the data of Example 1 in Table 1, all components except acicular wollastonite and carbon nanotubes are mixed uniformly according to the proportion and then melted and extruded through a twin-screw extruder, and acicular wollastonite and carbon nanotubes are added to the side feed port. Nanotubes (mixed according to the proportion through a high-speed mixer), granulation, that is, the granular products of the composition of the present invention are obtained. The twin-screw extruder adopts the CTE-35 (L / D=48) twin-screw extruder produced by Nanjing Keya Company, the extrusion temperature is 260-310° C., and the screw speed is 290 RPM.

[0049] The pellets were dried at 110°C for 4 hours, then injection molded into ASTM bars to measure their properties. The results are shown in Table 2.

Embodiment 2

[0051] According to the data of Example 2 in Table 1, all components except acicular wollastonite and carbon nanotubes are mixed uniformly according to the proportion and then melted and extruded through a twin-screw extruder, and acicular wollastonite and carbon nanotubes are added to the side feed port. Nanotubes (mixed according to the proportion through a high-speed mixer), granulation, that is, the granular products of the composition of the present invention are obtained. The twin-screw extruder adopts the CTE-35 (L / D=48) twin-screw extruder produced by Nanjing Keya Company, the extrusion temperature is 260-310° C., and the screw speed is 290 RPM.

[0052] The pellets were dried at 110°C for 4 hours, then injection molded into ASTM bars to measure their properties. The results are shown in Table 2.

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Abstract

The invention provides conductive engineering plastics and a preparation method thereof. The plastics contain the following ingredients by weight percent: 25-65% of polyphenyl ether, 0.5-5% of carbon nano tubes, 15-45% of needle-like wollastonite, 10-30% of HIPS, 0-10% of antioxidant, 0-10% of secondary antioxidant and 0-10% of dispersant. The method comprises the following steps: (1) proportioning raw materials and adding the ingredients except the needle-like wollastonite and the carbon nano tubes to a main feeding mouth of a double-screw extruder after mixing the above ingredients evenly; (2) adding the needle-like wollastonite and the carbon nano tubes to a side feeding mouth after mixing the two ingredients; (3) carrying out extruding, cooling, drying and granulating after full kneading under the molten state of polymer resins to generate composite plastics. The conductive engineering plastics can endow the products with good electrostatic dispersion capacities, mechanical properties and heat resistance, and have stable dimensions, small warping and clean appearance without dust falling.

Description

technical field [0001] The invention relates to a conductive engineering plastic and a preparation method thereof. Background technique [0002] There are tens of thousands of circuits inside high-performance integrated circuits, and the internal circuits are complex, fine and precise. These tiny and precise circuits etched and buried on semiconductor wafers such as silicon must be properly protected to avoid damage during production and transportation. Therefore, the integrated circuit tray material needs to have excellent mechanical properties, good static dissipation ability, high heat resistance, stable size, and small warpage. [0003] In order to provide conductivity to the IC tray and prevent the tray from accumulating static electricity, the traditional method is to add conductive fillers such as carbon black or carbon fiber to its base resin material. Although carbon fiber has a reinforcing effect on the base resin, the production of carbon fiber consumes a lot of...

Claims

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Application Information

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IPC IPC(8): C08L71/12C08L25/06C08K13/06C08K3/04C08K3/34
Inventor 韦联生谢迎洪何征
Owner 惠州市沃特新材料有限公司
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