Compatible polyamide-polyphenyl ether composition and preparation method thereof
A composition and technology of polyphenylene ether, applied in the field of compatibilized polyamide-polyphenylene ether composition and preparation thereof, can solve the problems of low functional group reactivity, increase energy consumption, affect the utilization rate of equipment capacity, etc., and achieve high performance. Reactivity, excellent comprehensive properties, and the effect of enhancing interfacial strength
Active Publication Date: 2014-04-16
SHANGHAI KUMHOSUNNY JINSHAN PLASTICS CO LTD
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Problems solved by technology
Among the above-mentioned monomers, some functional groups have low reactivity, and it is difficult to prepare functionalized products with high grafting rate and high reactivity.
Therefore, in order to react fully and prepare a large amount of graft copolymers, the rotational speed of the screw during the melt extrusion process cannot be set too high, which seriously affects the capacity utilization of the equipment.
Moreover, the preparation process of PPE / PA alloys usually cannot be completed in one step, which further increases energy consumption
Method used
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Embodiment 1～4 and comparative example 1～2
[0040] The preparation method of the compatibilized polyamide polyphenylene ether composition that following embodiment relates to, comprises the following steps:
[0041] (1) take raw materials according to parts by weight in Table 1;
[0042] (2) The raw materials are mixed in a high-speed mixer;
[0043] (3) Put the above-mentioned mixed raw materials into a twin-screw extruder, extrude and granulate through melting reaction. Among them, the twin-screw extruder has a total of 10 temperature control zones from the feed port to the die, and the temperatures from zone 1 to zone 10 are set as 180°C, 220°C, 240°C, 260°C, 270°C, 270°C, 280°C, 280°C, 290°C, 290°C, the die temperature is set to 290°C. The aspect ratio of the screw is 58, and the screw speed is 500 rpm. The extraction equipment is installed in two places, respectively in the fifth area and the eighth area, and the vacuum degree is 0.06MPa.
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The invention relates to a compatible polyamide-polyphenyl ether composition and a preparation method thereof. The compatible polyamide-polyphenyl ether composition is prepared from raw materials of 30 to 70 parts by weight of a polyamide, 30 to 70 parts by weight of a polyphenyl ether, 1 to 10 parts by weight of an isocyanate group-containing compound, 0 to 10 parts by weight of one or more impact modifiers, and 0.1 to 1.0 part by weight of processing auxiliary agents. The preparation method comprises the following steps of proportioning the raw materials according to the weight part ratio, uniformly mixing the raw materials by a high-speed mixer, feeding the mixed raw materials into a double-screw extruder by a main feeding device, and carrying out melting reaction extrusion and granulation to obtain the compatible polyamide-polyphenyl ether composition. The method utilizes an isocyanate group-containing oligomer as a reactive compatibilizer and a bi-component grafted copolymer is obtained by a melting extrusion in-situ reaction and thus interfacial tension of a polyamide and a polyphenyl ether is reduced and the compatible polyamide-polyphenyl ether composition is obtained. The preparation method of the compatible polyamide-polyphenyl ether composition is simple and feasible. The compatible polyamide-polyphenyl ether composition has excellent integrated performances.
Description
technical field [0001] The invention relates to a polymer material alloy, in particular to a compatibilized polyamide-polyphenylene ether composition and a preparation method thereof. Background technique [0002] Polyphenylene ether resin (PPE) has excellent physical and mechanical properties, electrical insulation properties, heat resistance, flame retardancy, dimensional stability and hydrolysis resistance; however, PPE has the disadvantages of high melt viscosity and poor solvent resistance. Polyamide (PA)-based resins have excellent solvent resistance and good processability, but PA has poor heat resistance and dimensional stability. Therefore, the PPE / PA alloy combines the good processability and chemical stability of PA with the high temperature resistance and hydrolysis resistance of PPE. PPE / PA alloy materials are widely used in automotive interior and exterior decoration and functional parts. [0003] PPE / PA is a typical incompatible polymer alloy material, which...
Claims
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IPC IPC(8): C08L77/06C08L71/12C08K5/29B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 单桂芳朱亚明周霆罗明华辛敏琦
Owner SHANGHAI KUMHOSUNNY JINSHAN PLASTICS CO LTD