Mixture for preparing nylon nano composite material and preparation method of composite material

A technology of nanocomposite materials and mixtures, which is applied in the field of preparation of nylon nanocomposite mixtures, which can solve the problems that other properties have not been improved, and achieve the effect of balancing rigidity

Inactive Publication Date: 2011-04-06
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

Even if a certain property of nylon is improv

Method used

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  • Mixture for preparing nylon nano composite material and preparation method of composite material
  • Mixture for preparing nylon nano composite material and preparation method of composite material
  • Mixture for preparing nylon nano composite material and preparation method of composite material

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Embodiment Construction

[0020] The present invention is described further below by embodiment, and its purpose is for better understanding content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention:

[0021] The process conditions that following embodiment 1-8 and comparative example 1-5 adopt are:

[0022] After vacuum drying nylon, SEBS-g-MAH and OMMT at 80°C, mix them with dispersant, compatibilizer and antioxidant according to the composition ratio shown in Table 1, and then use a twin-screw extrusion machine melt extrusion. Control the temperature of each section of the screw: 200°C, 230°C, 240°C, 240°C, 240°C, and 235°C from the feeding port to the outlet of the machine head, of which the temperature of the feeding section is 200 °C, the temperature of the machine head is 235 °C, and others is the temperature of the plasticizing shear section, the twin-screw speed is 100 revolutions per minute, and the residence time of the mater...

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Abstract

The invention relates to a nylon nano composite material and a preparation method thereof. The composite material comprises the following components in percentage by weight: 60-90 percent of nylon and 10-40 percent of maleic anhydride graft elastomer, in the terms of 100 percent of the summation of the weight percentage of the two components, 1-5 percent of organic montmorillonite, 0.5-3 percent of compatilizer, 0.5-2 percent of dispersing agent and 0.2-1 percent of antioxidant are added. The preparation method comprises the following steps of: (1) mixing the nylon, the antioxidant, the organic montmorillonite, the dispersing agent, the maleic anhydride graft elastomer and the compatilizer by a high-speed mixer for 3-5 minutes; and (2) carrying out melt extrusion granulation on the mixture by using a double screw extruder at the extrusion temperature of 230-260DEG C and the rotation speed of the screw of 50-150rpm; and then sampling by using a plastics injection moulding machine. Compared with the traditional nylon modified material, the invention better balances the rigidity, the toughness, the heat resistance and the size stability of the nylon, thereby providing the nylon nano composite material with favorable integrated performance and widening the application range of the nylon.

Description

technical field [0001] The invention relates to a mixture for preparing nylon nanocomposite materials and a preparation method of the composite materials, in particular to a method using maleic anhydride grafted polyolefin copolymer as a toughening agent, montmorillonite as a reinforcing agent, and compatible The agent improves the interface of nylon, polyolefin and montmorillonite blends, controls the phase morphology, and improves the comprehensive mechanical properties of the blends. technical background [0002] As a widely used engineering plastic, nylon is flexible, wear-resistant and has high mechanical strength, but its high water absorption, poor impact strength and dimensional stability limit its application range. In order to broaden the application range of nylon, various methods of modifying nylon have been conceived. For example, rubber or thermoplastic elastomer is used as a toughening agent to toughen nylon (O. Okada, Polymer, 2001, 42: 8715-8725). Although ...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/06C08L51/06C08L51/00C08L63/00C08K3/34C08K5/134C08K5/1515
Inventor 吴唯何三雄王茹
Owner EAST CHINA UNIV OF SCI & TECH
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