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Polycarbonate composite material with modified calcium sulfate whisker and preparation method thereof

A technology of calcium sulfate whisker and polycarbonate is applied in the field of calcium sulfate whisker modified polycarbonate composite material and its preparation technology, and achieves the effects of low notch sensitivity and good fatigue resistance

Inactive Publication Date: 2011-07-06
XIANGFU NEW BUILDING MATERIAL HUNAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of existing polycarbonate materials, and provide a calcium sulfate whisker-modified polycarbonate composite material with good fatigue resistance and low notch sensitivity and its preparation process

Method used

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  • Polycarbonate composite material with modified calcium sulfate whisker and preparation method thereof

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Embodiment 1

[0015] The present embodiment calcium sulfate whisker modified polycarbonate composite material is made of the raw material of following parts by weight: polycarbonate 100 parts, polystyrene 15 parts, calcium sulfate whisker 15 parts, antioxidant 1010 0.1 part, 3 parts of polytetrafluoroethylene, 1 part of titanate coupling agent.

[0016] Preparation:

[0017] (1) Add calcium sulfate whiskers and titanate coupling agent into a high-speed mixer, and activate for 5 minutes to obtain modified calcium sulfate whiskers; modified calcium sulfate whiskers have an aspect ratio of 15 and a diameter of 2 ;

[0018] (2) Add the polycarbonate, polystyrene, antioxidant 1010, and polytetrafluoroethylene into a high-speed mixer, and mix for 7 minutes to obtain polycarbonate, polystyrene, antioxidant 1010, and polytetrafluoroethylene Mixture with modified calcium sulfate whiskers;

[0019] (3) The mixture obtained in step (2) was melted and granulated through a twin-screw extruder, the b...

Embodiment 2

[0022] The calcium sulfate whisker modified polycarbonate composite material of this embodiment is made of the following raw materials in parts by weight: 100 parts of polycarbonate, 15 parts of polystyrene, 20 parts of calcium sulfate whisker, 0.1 part of antioxidant 1010, 3 parts of polytetrafluoroethylene, 1 part of titanate coupling agent.

[0023] Preparation:

[0024] (1) Add calcium sulfate whiskers and titanate coupling agent into a high-speed mixer, and activate for 5 minutes to obtain modified calcium sulfate whiskers; modified calcium sulfate whiskers have an aspect ratio of 15 and a diameter of 1.8 ;

[0025] (2) Add the polycarbonate, polystyrene, antioxidant 1010, and polytetrafluoroethylene into a high-speed mixer, and mix for 7 minutes to obtain polycarbonate, polystyrene, antioxidant 1010, and polytetrafluoroethylene Mixture with modified calcium sulfate whiskers;

[0026] (3) The mixture obtained in step (2) was melted and granulated through a twin-screw ...

Embodiment 3

[0029] The calcium sulfate whisker modified polycarbonate composite material of this embodiment is made of the following raw materials in parts by weight: 100 parts of polycarbonate, 20 parts of polystyrene, 25 parts of calcium sulfate whisker, 0.1 part of antioxidant 1010, 3 parts of polytetrafluoroethylene, 2 parts of titanate coupling agent.

[0030] Preparation:

[0031] (1) Add calcium sulfate whiskers and titanate coupling agent into a high-speed mixer, and activate for 5 minutes to obtain modified calcium sulfate whiskers; modified calcium sulfate whiskers have an aspect ratio of 20 and a diameter of 2 ;

[0032] (2) Add the polycarbonate, polystyrene, antioxidant 1010, and polytetrafluoroethylene into a high-speed mixer, and mix for 7 minutes to obtain polycarbonate, polystyrene, antioxidant 1010, and polytetrafluoroethylene Mixture with modified calcium sulfate whiskers;

[0033] (3) The mixture obtained in step (2) was melted and granulated through a twin-screw e...

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Abstract

The invention relates to a polycarbonate composite material with modified calcium sulfate whisker and a preparation method thereof. The calcium sulfate whisker-modified polycarbonate composite material comprises the following raw materials by weight parts: 100 parts of polycarbonate, 15 to 20 parts of polystyrene, 15 to 25 parts of calcium sulfate whisker, 0.1 to 0.4 part of antioxidant 1010, 1 to 4 parts of polyfluortetraethylene and 1 to 3 parts of titanic acid ester coupling agent. The preparation method comprises the following steps: calcium sulfate whisker and titanic acid ester coupling agent are activated for 3 to 6 minutes in a high-speed mixer; the rest raw materials are mixed for 6 to 8 minutes with the modified calcium sulfate whisker in the high-speed mixer; and then the obtained mixture is granulated by melting through a double-screw extruder. The polycarbonate composite material with the modified calcium sulfate whisker has good fatigue resistance and low notch sensitivity and is particularly suitable for manufacturing television shells, precise instrument shells, automotive interior trims, instrument structural components and the like.

Description

technical field [0001] The invention relates to a polycarbonate composite material and its preparation process, in particular to a calcium sulfate whisker modified polycarbonate composite material and its preparation process. Background technique [0002] Polycarbonate (PC), a typical hard and brittle polymer, has good comprehensive properties, tensile strength, compressive strength, bending strength and other properties are equivalent to polyamide 6 or polyamide 66, and the impact strength is also high For all aliphatic polyamides and most engineering plastics. However, the poor fatigue resistance and high notch sensitivity of polycarbonate limit the application of PC. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of existing polycarbonate materials, and provide a calcium sulfate whisker-modified polycarbonate composite material with good fatigue resistance and low notch sensitivity and a pr...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L25/06C08L27/18C08K9/04C08K7/08C08K3/30B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 刘珍如刘立文付桃梅杨志强宁勇鲁纪鸣
Owner XIANGFU NEW BUILDING MATERIAL HUNAN
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