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Polyamide polycarbonate alloy material and preparation method and applications thereof

A polycarbonate and alloy material technology, applied in the field of polyamide polycarbonate alloy material and its preparation, can solve the problems of poor mechanical properties, poor dispersion, and weak interface adhesion of the blend system, and achieve good Dimensional stability and creep resistance, water absorption reduction, effect of low water absorption

Active Publication Date: 2017-06-23
上海昶勤实业有限公司
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Problems solved by technology

However, since polyamide and polycarbonate are thermodynamically incompatible systems, the interfacial tension between the two phases is large and the interfacial adhesion is weak, resulting in poor dispersion between phases, so that the resulting blend The mechanical properties of the system are very poor, so how to increase the compatibility between the two to obtain a composite material that can combine the excellent properties of the two has become an important research topic

Method used

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  • Polyamide polycarbonate alloy material and preparation method and applications thereof
  • Polyamide polycarbonate alloy material and preparation method and applications thereof
  • Polyamide polycarbonate alloy material and preparation method and applications thereof

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preparation example Construction

[0063]

[0064] The preparation method of above-mentioned polyamide polycarbonate alloy material comprises the steps:

[0065] (1), 5-90 parts of dry polyamide, 10-95 parts of dry polycarbonate, 1-15 parts of dry toughening agent, 1.75-17.5 parts of dry compatibilizer and 0.2-2.6 parts of auxiliary Mix in a high-speed mixer for 5‐10min to obtain a premix;

[0066] (2) Add the premixed material into the main feeding hopper of the twin-screw extruder, add 15-55 parts of dry semi-aromatic polyamide fibers into the side feeding hopper of the twin-screw extruder, and pass through the twin-screw extruder. The extruder is extruded, stretched and pelletized to obtain the polyamide polycarbonate alloy material.

[0067] Wherein, in step (1), dry polyamide, dry polycarbonate, dry toughening agent and dry compatibilizer are respectively made of polyamide, polycarbonate, toughening agent and compatibilizer at 90‐ The obtained product was dried in an electric blast drying oven at 110°C...

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Abstract

The invention provides a polyamide polycarbonate alloy material and a preparation method and applications thereof. The polyamide polycarbonate alloy material comprises the following components in parts by weight: 5 to 90 parts of polyamide, 10 to 95 parts of polycarbonate, 1 to 15 parts of toughening agent, 1.75 to 17.5 parts of compatilizer, 15 to 55 parts of semi-aromatic polyamide fibers, and 0.2 to 2.6 parts of auxiliary agent. The preparation method comprises the following steps: evenly mixing polyamide, polycarbonate, a toughening agent, a compatibilizer, and an auxiliary agent, adding the mixture into the main feed hopper of a double-screw extruder; adding the semi-aromatic polyamide fibers into the lateral feed hopper of the double-screw extruder, and carrying out extruding, pulling, and cutting to obtain the polyamide polycarbonate alloy material. The provided polyamide polycarbonate alloy material has the advantages of good interfacial compatibility, good particle dispersing property, and high strength, can be used to prepare parts of electronic and electrical products, and has a wide application range.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis, and relates to a polyamide polycarbonate alloy material and a preparation method and application thereof. Background technique [0002] Polycarbonate (PC) has been widely used due to its outstanding impact toughness, good transparency, dimensional stability and electrical insulation, but it still has poor processing fluidity, poor chemical resistance, easy stress cracking and notch Defects such as sensitivity and high price limit its further application. [0003] In addition, although polyamide (PA) has high mechanical strength, wear resistance, self-lubricating property, melt fluidity and good oil resistance, its heat resistance, impact strength and dimensional stability are poor. . [0004] It can be seen that polycarbonate and polyamide have better complementarity in terms of performance. If a blend system of the two can be constructed, and the blend system can maintain th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L77/02C08L77/06C08L55/02C08L35/06C08L51/00C08K5/134C08K5/526C08K5/20
Inventor 杨桂生李庆丰赵冬云
Owner 上海昶勤实业有限公司
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