High temperature resistance polycarbonate composite material and preparation method thereof

A technology of polycarbonate and composite materials, applied in the field of polymer materials, can solve problems such as difficult popularization and application, complex polymerization process, difficult to meet the use requirements, etc., achieve low cost, meet design and use requirements, and simple preparation process.

Inactive Publication Date: 2012-01-11
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as automotive high-reflective headlight covers, spotlight housings, welding hole sleeves, hot steam disinfection safety valves, medical high-temperature disinfection utensils, etc., the Vicat softening temperature of transparent PC materials required to be used is as high as 180 degrees, while ordinary PC materials can only Reaching 145 degrees, it is difficult to meet its use requirements
At present, only the copolycarbonate PC-HT produced by German Bayer company (trade name "Yaba") can meet the requirements. However, due to its complicated polymerization process, the market price remains high, and it is difficult to popularize and apply it in the market.

Method used

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  • High temperature resistance polycarbonate composite material and preparation method thereof
  • High temperature resistance polycarbonate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Put 91.5% PC by weight, 5% heat-resistant agent, 0.5% crosslinking agent, 2% toughening agent, and 1% other additives into a mixing tank for 15 minutes of thorough mixing , Put the mixed material into the twin-screw extruder to melt and knead, extrude, and granulate. The screw diameter of the twin-screw extruder is 35mm, the ratio of screw length to diameter is set to 32, and the extrusion temperature The first zone temperature is 260°C, the second zone temperature is 270°C, the third zone temperature is 280°C, the fourth zone temperature is 270°C, the head temperature is 285°C, the residence time is 1.4min, and the pressure is 15MPa.

Embodiment 2

[0031] Example 2 Put 85.6% PC by weight, 10% heat-resistant agent, 0.4% crosslinking agent, 3% toughening agent, and 1% other additives into a mixing tank for 15 minutes of thorough mixing , Put the mixed material into the twin-screw extruder to melt and knead, extrude, and granulate. The screw diameter of the twin-screw extruder is 35mm, the ratio of screw length to diameter is set to 36, and the extrusion temperature The first zone temperature is 270°C, the second zone temperature is 280°C, the third zone temperature is 290°C, the fourth zone temperature is 280°C, the head temperature is 295°C, the residence time is 1.0min, and the pressure is 12MPa.

Embodiment 3

[0032] Example 3 Put 79.7% PC by weight, 15% heat-resistant agent, 0.3% crosslinking agent, 4% toughening agent, and 1% other additives into a mixing tank for 15 minutes of thorough mixing , Put the mixed material into the twin-screw extruder to melt and knead, extrude, and granulate. The screw diameter of the twin-screw extruder is 35mm, the ratio of screw length to diameter is set to 28, and the extrusion temperature The first zone temperature is 270°C, the second zone temperature is 285°C, the third zone temperature is 310°C, the fourth zone temperature is 300°C, the head temperature is 315°C, the residence time is 0.6min, and the pressure is 16MPa.

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PUM

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Abstract

The invention discloses a high temperature resistance polycarbonate composite material and a preparation method thereof. The high temperature resistance polycarbonate composite material consists of the following components in percentage by weight: 73.5 to 92 percent of polycarbonate, 5 to 20 percent of heat-resisting agent, 0.2 to 0.5 percent of cross-linking agent, 2 to 5 percent of toughening agent and 0.2 to 1 percent of other auxiliaries. The polycarbonate composite material disclosed by the invention has a heat distortion temperature of 145 to 165 DEG C and a vicat softening temperature of 160 to 190 DEG C and keeps excellent transparence of the original material. The design and using requirements of various industries and consumer goods on transparent temperature resistance carbonate ester can be met. The high temperature resistance polycarbonate composite material disclosed by the invention can be prepared by a common blending extrusion pelletizing preparation method. Compared with the material prepared by a reactive synthesis method, the high temperature resistance polycarbonate composite material has simple preparation process and low cost.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a high-temperature-resistant polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a kind of polymer containing carbonate in the molecular chain. It is one of the five general-purpose engineering plastics. Its output and consumption are second only to nylon engineering plastics, ranking second. Modified PC has good transparency and excellent comprehensive performance, and is widely used in automobile industry, electronic and electrical industry, machinery industry and other fields. [0003] Although PC materials and their alloys are widely used, with the development of economy and the progress of industrial technology, people continue to put forward higher and higher temperature resistance requirements for the application of PC materials. Such as automotive high-reflective headlight covers, spotlight housings, weldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/00C08K5/03B29C47/92B29C48/92
CPCB29C48/04
Inventor 徐东徐永杨海灵
Owner ANHUI KEJU NEW MATERIALS
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